Source load output scheduling method and device based on node power supply circuit

Abstract

The application discloses a source-load output scheduling method and device based on a node power supply circuit, and belongs to the field of output scheduling. The method is as follows: acquiring port information of each power supply node and load node in each source-load associated partition, and constructing a source-load output interaction path by using the port information; constructing an interaction extension path according to the source-load output interaction path; screening a target interaction path from the source-load output interaction path and a target extension path from the interaction extension path, constructing a source-load output collaborative feasible region according to operation parameters of the target interaction path and the target extension path and a plurality of constraint output combinations; and screening a target output collaborative combination from the source-load output collaborative feasible region based on a preset scheduling condition and performing source-load output scheduling processing. The application can be fitted to the actual connection structure and actual output demand of a power grid for source-load output scheduling, can not only improve the scheduling precision, but also can improve the stability of power grid operation.

Description

Technical Field

[0001] This invention relates to the technical field of source-load output scheduling, and in particular to a source-load output scheduling method and apparatus based on node power supply circuits. Background Technology

[0002] In the field of power system operation and dispatch, renewable energy sources such as wind power and photovoltaics are gradually replacing traditional fossil fuels at the power generation end. However, the grid connection of new energy sources exacerbates the randomness and volatility of electricity, thus posing new requirements for the security and stability of the power grid. Among these requirements, source-load output coordination analysis is a key link in achieving the safe and stable operation of the power grid under the high proportion of new energy integration.

[0003] To align with the power grid's source-load status, a commonly used source-load output scheduling method is a source-load output coordination analysis method based on the division of a single source-load associated region. This method typically divides the entire power grid into several independent source-load regions, identifies a power source node and a load node within each region, and performs source-load forecasting based on the correspondence between the power source node and the load node to determine the source-load demand for each region. Then, source-load output scheduling is performed based on the source-load demand for each region.

[0004] However, this method has the following technical problems: the various source-load regions are interconnected, and each source-load region may have multiple power supply nodes and multiple load nodes. These multiple power supply nodes and multiple load nodes are interconnected, making it difficult to reflect the actual demand of the power grid for the power supply nodes and load nodes of a single source-load region, thus reducing the accuracy of source-load output scheduling. Moreover, when a certain region experiences output fluctuations or load changes, it will produce a chain reaction, causing changes in the source-load demand of connected source-load regions, resulting in a deviation between the prediction results and the actual demand, further reducing the accuracy of subsequent scheduling. Summary of the Invention

[0005] This invention provides a source-load output scheduling method, device, system, equipment, and medium based on node power supply circuits, which can solve the technical problems of low scheduling accuracy and large deviation of source-load output in the prior art.

[0006] A first aspect of this invention provides a source-load output scheduling method based on node power supply circuits, the method comprising: Obtain the node port information within each source-load associated partition, and construct the source-load output interaction path using the node port information. The node port information includes the output port information of the power node and the input port information of the load node within the source-load associated partition, and the source-load output interaction path is the electrical path on which the power node supplies power to the load node. Determine the connection relationship between the terminal primary device of the source-load output interaction path and the adjacent source-load associated partition, and construct an interaction extension path based on the connection relationship. The interaction extension path is a transmission path in which the power node in a source-load associated partition affects the output of the load node in the remaining connected source-load associated partition through the physical connection of the power grid. Target interaction paths that satisfy a preset power flow direction are selected from the source-load output interaction paths, and target extension paths that satisfy a preset conduction direction are selected from the interaction extension paths. A source-load output collaborative feasible domain is constructed based on the operating parameters of the target interaction paths and the target extension paths, as well as several preset constraint output combinations. The power flow direction is the path direction in which nodes within the source-load output interaction path are connected, and the conduction direction is the path direction in which the source-load associated partitions within the interaction extension path are connected. Based on preset scheduling conditions, target output coordination combinations are selected from the feasible domain of source-load output coordination, and source-load output scheduling is performed according to the target output coordination combinations. The preset scheduling conditions include: scheduling target constraints, directional conflict constraints, and overload constraints.

[0007] This invention can determine the power output interaction path by combining the port information of multiple power nodes and multiple load nodes in a power source region, and determine the connection relationship of each power source region based on the power output interaction path. Then, based on the connection relationship of each power source region and preset constraints, it can select the power output combination that meets the requirements from the preset power output combination for power output scheduling. This not only fits the actual connection structure and actual power output requirements of the power grid, improving the accuracy of scheduling, but also avoids deviations caused by fluctuations in adjacent power source regions, thus improving the stability of power grid operation.

[0008] A second aspect of the present invention provides a source-load output scheduling device based on a node power supply circuit, the device comprising: The acquisition module is used to acquire node port information within each source-load associated partition and construct a source-load output interaction path using the node port information. The node port information includes the output port information of the power node and the input port information of the load node within the source-load associated partition. The source-load output interaction path is the electrical path on which the power node supplies power to the load node. The relationship building module is used to determine the connection relationship between the terminal primary device of the source-load output interaction path and the adjacent source-load associated partition, and to build an interaction extension path based on the connection relationship. The interaction extension path is a transmission path in which the power node in a source-load associated partition affects the output of the load node in the remaining connected source-load associated partition through the physical connection of the power grid. The feasible domain construction module is used to filter target interaction paths that satisfy a preset power flow direction from the source load output interaction paths and target extension paths that satisfy a preset conduction direction from the interaction extension paths, and to construct a source load output collaborative feasible domain based on the operating parameters of the target interaction paths and the target extension paths and several preset constraint output combinations. The power flow direction is the path direction in which nodes within the source load output interaction paths are connected, and the conduction direction is the path direction in which the source load associated partitions within the interaction extension paths are connected. The output scheduling module is used to select target output coordination combinations from the source-load output coordination feasible domain based on preset scheduling conditions, and to perform source-load output scheduling processing according to the target output coordination combinations. The preset scheduling conditions include: scheduling target constraints, directional conflict constraints, and overload constraints.

[0009] A third aspect of the present invention provides an electronic device, comprising: a memory for storing computer software programs; and a processor for reading and executing the computer software programs, thereby implementing the source-load output scheduling method based on node power supply circuits as described above.

[0010] A fourth aspect of the present invention provides a non-transitory computer-readable storage medium storing a computer software program, which, when executed by a processor, implements the source-load output scheduling method based on a node power supply circuit as described above.

[0011] A fifth aspect of the present invention provides a computer program product, including a computer program that, when executed by a processor, implements the source-load output scheduling method based on a node power supply circuit as described above.

[0012] Compared with the prior art, the present invention provides a source-load output scheduling method, apparatus, device, and medium based on node power supply circuits, which has the following advantages: The present invention can obtain the port information of each power node and load node in each source-load associated partition, and construct source-load output interaction paths using the port information; determine the connection relationship between the terminal primary device of the source-load output interaction path and the adjacent source-load associated partition, and construct an interaction extension path according to the connection relationship; select target interaction paths that satisfy the preset power flow direction from the source-load output interaction paths and target extension paths that satisfy the preset conduction direction from the interaction extension paths, and construct a source-load output collaborative feasible domain according to the operating parameters of the target interaction paths and target extension paths and several preset constraint output combinations; select target output collaborative combinations from the source-load output collaborative feasible domain based on preset scheduling conditions, and perform source-load output scheduling processing according to the target output collaborative combinations. This invention can determine the power output interaction path by combining the port information of multiple power nodes and multiple load nodes in a power source region, and determine the connection relationship of each power source region based on the power output interaction path. Then, based on the connection relationship of each power source region and preset constraints, it can select the power output combination that meets the requirements from the preset power output combination for power output scheduling. This not only fits the actual connection structure and actual power output requirements of the power grid, improving the accuracy of scheduling, but also avoids deviations caused by fluctuations in adjacent power source regions, thus improving the stability of power grid operation. Attached Figure Description

[0013] Figure 1 This is a schematic flowchart of a source-load output scheduling method based on a node power supply circuit provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of a source-load output scheduling device based on a node power supply circuit according to an embodiment of the present invention. Detailed Implementation

[0014] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] In the field of power system operation and dispatch, renewable energy sources such as wind power and photovoltaics are gradually replacing traditional fossil fuels at the power generation end. However, the grid connection of new energy sources exacerbates the randomness and volatility of electricity, thus posing new requirements for the security and stability of the power grid. Among these requirements, source-load output coordination analysis is a key link in achieving the safe and stable operation of the power grid under the high proportion of new energy integration.

[0016] To align with the power grid's source-load status, a commonly used source-load output scheduling method is a source-load output coordination analysis method based on the division of a single source-load associated region. This method typically divides the entire power grid into several independent source-load regions, identifies a power source node and a load node within each region, and performs source-load forecasting based on the correspondence between the power source node and the load node to determine the source-load demand for each region. Then, source-load output scheduling is performed based on the source-load demand for each region.

[0017] However, this method has the following technical problems: the various source-load regions are interconnected, and each source-load region may have multiple power supply nodes and multiple load nodes. These multiple power supply nodes and multiple load nodes are interconnected, making it difficult to reflect the actual demand of the power grid for the power supply nodes and load nodes of a single source-load region, thus reducing the accuracy of source-load output scheduling. Moreover, when a certain region experiences output fluctuations or load changes, it will produce a chain reaction, causing changes in the source-load demand of connected source-load regions, resulting in a deviation between the prediction results and the actual demand, further reducing the accuracy of subsequent scheduling.

[0018] To address the aforementioned issues, the following detailed description and explanation will be provided through specific embodiments of a source-load output scheduling method, apparatus, equipment, and medium based on node power supply circuits provided in this application.

[0019] To address the technical problems of low scheduling accuracy and large deviation in existing source load output technologies, referring to Figure 1 The diagram shows a schematic flowchart of a source-load output scheduling method based on a node power supply circuit according to an embodiment of the present invention.

[0020] In one embodiment, the source-load output scheduling method based on node power supply circuits is applicable to a source-load output analysis agent, which can be set up on a computer or other intelligent terminal.

[0021] As an example, the source-load output scheduling method based on node power supply circuits may include: S11. Obtain the node port information within each source-load associated partition, and construct the source-load output interaction path using the node port information. The node port information includes the output port information of the power node and the input port information of the load node within the source-load associated partition. The source-load output interaction path is the electrical path on which the power node supplies power to the load node.

[0022] In one embodiment, various source-load associated partitions of the power grid can be determined, wherein a source-load associated partition refers to a sub-region of the power grid that includes at least one power source node and at least one load node, which is divided according to the power grid topology and the degree of electrical connection between the power source node and the load node.

[0023] Next, the node port information can be obtained. This node port information includes the output port information of each power node and the input port information of each load node within the source-load association zone. Based on the node port information, the corresponding association relationship between power nodes and load nodes within each source-load association zone can be determined. This corresponding association relationship refers to the direct or indirect electrical connection between the power node and the load node, and the corresponding relationship that has the possibility of power supply.

[0024] Based on the corresponding relationship, the electrical paths within each source-load associated partition are traversed and analyzed. Specifically, all potential electrical connection paths between all power supply nodes and corresponding load nodes within the source-load associated partition are traversed. Here, electrical paths refer to physical channels that can realize power transmission, formed by power equipment such as transmission lines, transformers, and switches connected in series or in parallel.

[0025] The potential electrical connection paths obtained through the traversal are then screened for validity. The screening criteria are that all electrical equipment on the path is in normal operating condition, and there is an electrical potential energy difference between the power supply nodes and load nodes at both ends of the path, enabling effective power transmission. The screened paths are then used as source-load-output interaction paths.

[0026] As an example, the step of obtaining the node port information within each source-load associated partition and constructing the source-load output interaction path using the node port information may include the following sub-steps: S111. Obtain the output port information of the power node and the input port information of the load node in each source-load associated partition, and determine the port connection status between the power node and the load node based on the input port information and the output port information.

[0027] S112. Based on the port connection status, select several pairs of power load node pairs, and construct a local power supply path using the primary equipment sequence corresponding to the power load node pairs. The power load node pairs are power nodes and load nodes that provide electrical connection for primary equipment, and the primary equipment sequence is a sequence of all primary equipment arranged in the order in which electrical energy is transmitted from the power node to the load node.

[0028] S113. Select several load nodes to be traced from each source-load associated partition, and use several load nodes to be traced to perform reverse path tracing to obtain the target source-load power supply path, wherein the load nodes to be traced are load nodes of non-power load node pairs.

[0029] S114. The local power supply path and the target source load power supply path are merged to obtain the source load output interaction path.

[0030] In one embodiment, the output port information of the power nodes and the input port information of the load nodes within each source-load associated partition can be obtained. Here, a power node refers to a power facility capable of generating and outputting electrical energy, including thermal power nodes, hydropower nodes, wind power nodes, photovoltaic power nodes, etc. A load node refers to a power facility or power-consuming unit that consumes electrical energy, including industrial load nodes, residential load nodes, commercial load nodes, etc.

[0031] Output port information refers to the interface through which power nodes transmit electrical energy to the outside world, while input port information refers to the interface through which load nodes receive external electrical energy. Port information includes port number, port type, port rated voltage, and the identifier of the primary equipment connected to the port. For each source-load associated zone, a comparison list of output ports of power nodes and input ports of load nodes within that zone can be created. The list covers all output ports of all power nodes and all input ports of all load nodes within that zone.

[0032] For each source-load associated partition, the electrical connection relationship between the power node and the load node is determined based on the output port information of the power node and the input port information of the load node. The connection status of the output port of each power node and the input port of each load node can be compared one by one to obtain the port connection status between the power node and the load node.

[0033] Specifically, based on the primary equipment identification of the port connection, the connection status of the output port of each power node and the input port of each load node in the list is compared one by one. The specific comparison process is as follows: it can be determined whether the two ports are electrically connected through the same group or consecutive primary equipment, that is, to check whether the primary equipment connected to the output port of the power node has a direct or indirect physical connection relationship with the primary equipment connected to the input port of the load node, and whether the physical connection relationship has not been broken (such as the circuit breaker not being opened or the disconnecting switch not being opened).

[0034] Furthermore, the port connection status is determined based on the comparison results. The port connection status is divided into "connected" and "disconnected". The "connected" status means that the power node output port and the load node input port form a complete electrical path through the primary equipment, which can realize power transmission. The "disconnected" status means that the primary equipment connection between the power node output port and the load node input port is interrupted, and a complete electrical path cannot be formed, so power transmission cannot be realized.

[0035] In one embodiment, assume an existing source-load associated partition containing two power generation nodes (thermal power generation node 1 and hydropower generation node 2) and three load nodes (industrial load node A, residential load node B, and commercial load node C). Thermal power generation node 1 has an output port 1-1 connected to a circuit breaker 1 and a transmission line L1; hydropower generation node 2 has an output port 2-1 connected to a disconnector switch 2 and a transmission line L2; industrial load node A has an input port A-1 connected to a transmission line L1 and a circuit breaker A; residential load node B has an input port B-1 connected to a transmission line L3 and a circuit breaker B; and commercial load node C has an input port C-1 connected to a transmission line L2 and a circuit breaker C.

[0036] In practice, the connection status can be compared pair by pair: Comparing the output port 1-1 of thermal power generation node 1 with the input port A-1 of industrial load node A, the two are physically connected via transmission line L1, circuit breaker 1, and circuit breaker A, and both circuit breaker 1 and circuit breaker A are closed, thus the connection is considered "connected". Comparing the output port 1-1 of thermal power generation node 1 with the input port B-1 of residential load node B, the primary equipment connected to both is not physically connected, thus the connection is considered "disconnected". Comparing the output port 2-1 of hydropower generation node 2 with the input port C-1 of commercial load node C, the two are physically connected via transmission line L2, disconnector 2, and circuit breaker C, and both disconnector 2 and circuit breaker C are closed, thus the connection is considered "connected". Comparing the output port 2-1 of hydropower generation node 2 with the input port A-1 of industrial load node A, the primary equipment connected to both is not physically connected, thus the connection is considered "disconnected". All other port combinations are also considered "disconnected" after comparison.

[0037] Next, based on the port connection status, the power nodes and load nodes that are directly electrically connected through the primary equipment can be identified to obtain the power load node pairs. Based on the sequence of primary equipment between each pair of nodes in the power load node pairs, a local power supply path can be constructed.

[0038] Primary equipment refers to electrical equipment that directly withstands grid voltage and current, used for the production, transmission, transformation, distribution, and use of electrical energy, including generators, transformers, transmission lines, circuit breakers, and disconnectors. Direct electrical connection refers to the electrical connection between a power source node and a load node achieved solely through continuous primary equipment, without requiring any other power source or load node as an intermediary. In other words, the electrical path between them does not contain any other energy production or consumption units besides the power source node and the load node. During the identification process, the electrical path corresponding to each "connected" port combination can be checked to confirm whether other power source or load nodes exist in the path. If none are found, the corresponding power source node and load node are identified as a power source-load node pair.

[0039] Furthermore, for each power supply-load node pair, the sequence of primary equipment traversing that pair can be identified. This sequence refers to the set of all primary equipment arranged sequentially according to the order in which electrical energy is transmitted from the output port of the power supply node to the input port of the load node. The order must strictly adhere to the physical connections of the power grid topology to accurately reflect the path of energy transmission. During this process, the energy transmission path must be traced segment by segment based on the primary equipment connection information to identify the primary equipment at each stage and arrange them in chronological order to form a complete sequence of primary equipment.

[0040] Furthermore, a local power supply path refers to the specific path by which a single power source node transmits electrical energy to a single load node through a directly connected primary device. This path only covers the electrical connection range between a set of power source-load node pairs and does not involve the electrical paths of other source-load node pairs.

[0041] In one embodiment, port combination data with a connection status of "connected" within the source-load associated partition can be retrieved, including the output port 1-1 of thermal power generation node 1 and the input port A-1 of industrial load node A (corresponding to primary equipment: circuit breaker 1, transmission line L1, circuit breaker A), the output port 2-1 of hydropower generation node 2 and the input port C-1 of commercial load node C (corresponding to primary equipment: disconnector 2, transmission line L2, circuit breaker C).

[0042] The electrical paths corresponding to the two sets of "connected" port combinations are checked: In the electrical path between thermal power generation node 1 and industrial load node A (circuit breaker 1 → transmission line L1 → circuit breaker A), there are no other power supply nodes or load nodes intervening, so it is determined to be a direct electrical connection, forming power supply load node pair 1 (thermal power generation node 1 - industrial load node A); In the electrical path between hydropower generation node 2 and commercial load node C (disconnecting switch 2 → transmission line L2 → circuit breaker C), there are no other power supply nodes or load nodes intervening, so it is determined to be a direct electrical connection, forming power supply load node pair 2 (hydropower generation node 2 - commercial load node C). The primary equipment sequence between each power load node pair is analyzed: the primary equipment corresponding to power load node pair 1 is arranged in the power transmission order (from the output port 1-1 of thermal power generation node 1 to the input port A-1 of industrial load node A) as "circuit breaker 1, transmission line L1, circuit breaker A"; the primary equipment corresponding to power load node pair 2 is arranged in the power transmission order (from the output port 2-1 of hydropower generation node 2 to the input port C-1 of commercial load node C) as "disconnecting switch 2, transmission line L2, circuit breaker C". Based on the above node pairs and primary equipment sequences, local power supply path 1 and local power supply path 2 are constructed respectively, where local power supply path 1 is "thermal power generation node 1 → circuit breaker 1 → transmission line L1 → circuit breaker A → industrial load node A", and local power supply path 2 is "hydropower generation node 2 → disconnecting switch 2 → transmission line L2 → circuit breaker C → commercial load node C".

[0043] In one embodiment, several load nodes to be traced can be selected from each source-load association partition, and the upstream power supply node of each load node to be traced can be traced in reverse to obtain the target source-load power supply path. The load nodes to be traced are load nodes in the source-load association partition other than the power supply load nodes.

[0044] Optionally, load nodes other than power supply load nodes in each source-load associated partition can be selected by comparison and identified as load nodes to be traced. These load nodes are those that do not form a power supply load node pair with any power supply node through direct electrical connection, meaning they cannot obtain power through a local power supply path. Further, for each load node to be traced, the reverse path of the upstream power supply node is traced to obtain the target source-load power supply path.

[0045] Among them, reverse path tracing represents starting from the load node to be traced and searching in reverse along the primary equipment connected upstream to it to provide power to the power source node. The primary equipment connected upstream refers to the primary equipment connected to the input port of the load node to be traced that can transmit power to it. The reverse search direction is opposite to the forward power transmission direction, that is, from the load side to the power source side.

[0046] Finally, the power output interaction path can be determined based on the local power supply path and the target source load power supply path. Specifically, the local power supply path and the target source load power supply path can be merged to obtain the power output interaction path.

[0047] Through the above operations, it can be ensured that the power supply paths corresponding to all load nodes in the source-load associated partition are identified without omission, and the primary equipment connection relationship and source-load correspondence of each path are clear and unambiguous. This enables the determination of a reasonable source-load output coordination scheduling strategy, ensuring the safe and stable operation of the power system.

[0048] As an example, the step of selecting several source load nodes to be traced from each source load associated partition, and using several source load nodes to perform reverse path tracing to obtain the target source load power supply path, may include the following sub-steps: S1131. Select several load nodes to be traced in each source-load association partition, and perform reverse path tracing for each load node to be traced to obtain the target electrical node, wherein the target electrical node is the bus node or branch node connected to the second end of the primary equipment of the previous level connected to the load node to be traced.

[0049] S1132. Starting from the target electrical node, trace the connected primary equipment in reverse along the upstream power direction to obtain the reverse traced equipment link, wherein the reverse traced equipment link is the connection path of the target electrical node to the connected primary equipment in the upstream power direction.

[0050] S1133. Based on the preset reconstruction direction, the power nodes and electrical nodes of the reverse tracing device link are reconstructed to obtain the initial source-load power supply path, wherein the preset reconstruction direction is the direction of power transmission from the power source to the load.

[0051] S1134. Select a target source load power supply path from several initial source load power supply paths, wherein the target source load power supply path is a path in which the real-time operating status information of the primary equipment of the initial source load power supply path meets the preset energy transmission continuity condition.

[0052] In one embodiment, the upstream primary equipment connected to each load node to be traced can be used as the entry point, and the node type attribute of the electrical node connected to the other end of the upstream primary equipment can be used to determine whether it belongs to a bus node or a branch node.

[0053] Optionally, the upstream primary equipment refers to the primary equipment directly connected to the input port of the load node to be traced and located in the upstream direction of power transmission. Primary equipment refers to power equipment that directly withstands grid voltage and passes through grid current, and is used to realize the production, transmission, transformation, distribution and use of power, including generators, transformers, transmission lines, circuit breakers, disconnect switches, etc.

[0054] For each load node to be traced, its upstream primary equipment can be located, and the electrical node connected to the other end of that upstream primary equipment can be determined. An electrical node refers to a connection point in the power grid used to connect various primary equipment and realize the aggregation, distribution, or transmission of electrical energy, including busbars, node terminals, etc. Simultaneously, the node type attribute data of the electrical node is retrieved. The node type attribute refers to attribute information used to distinguish the function of the electrical node, specifically divided into three categories: convergence nodes, branch nodes, and ordinary nodes. Convergence nodes are electrical nodes used to aggregate electrical energy transmitted from multiple upstream primary equipment and distribute it to downstream primary equipment. Branch nodes are electrical nodes used to divert electrical energy transmitted from upstream primary equipment to multiple downstream primary equipment. Ordinary nodes are electrical nodes that only connect a single upstream primary equipment to a single downstream primary equipment and have no aggregation or diversion function.

[0055] Furthermore, the operation based on node type attribute data can include: if the node type attribute of an electrical node is a bus node or a branch node, then the electrical node is identified as the target electrical node; if the node type attribute of an electrical node is a normal node, then the normal node is directly used as the successor node for subsequent reverse tracing, without needing to be marked as the target electrical node.

[0056] In one embodiment, the load node to be traced is residential load node B. The connection information of residential load node B is retrieved, and it is found that the upstream primary equipment it is connected to is circuit breaker B. The electrical node connected to the other end of circuit breaker B is busbar one. The node type attribute data of busbar one is retrieved, and it is shown that its node type attribute is a branch node (its function is to divert upstream power to residential load node B and other downstream equipment).

[0057] Based on the above data, it is determined that the node type attribute of busbar 1 belongs to branch node. Therefore, busbar 1 is identified as the target electrical node, and relevant information is recorded: the target electrical node is busbar 1, the corresponding upstream primary equipment is circuit breaker B, and the corresponding load node to be traced is residential load node B. If there is another load node D to be traced, whose upstream primary equipment is disconnector D, and the electrical node connected to the other end of disconnector D is node 1, and the node type attribute of node 1 is ordinary node, then this node is determined to be an ordinary node and directly used as the connecting node for subsequent reverse tracing, without being marked as a target electrical node.

[0058] For each target electrical node identified as a bus node or branch node, reverse path tracing is performed along the target primary equipment connected to the target electrical node in the direction of the upstream power supply until the tracing path is connected to a power node, thus obtaining the reverse tracing device link.

[0059] For each target electrical node (or ordinary connection node), the upstream power source direction can be clearly identified. The upstream power source direction refers to the direction pointing towards the source of electrical energy, i.e., from the load node to be traced to the power source node. Based on the power grid topology data, target primary equipment connected to the target electrical node (or ordinary connection node) in the upstream power source direction is selected. Target primary equipment refers to primary equipment located in the upstream power source direction, directly connected to the node, and possessing power transmission capabilities. Primary equipment located in the downstream load direction (such as primary equipment connected to other load nodes) must be excluded.

[0060] Optionally, power grid topology data refers to structured data that reflects the connection relationships between electrical nodes and primary equipment in the power grid, including a list of upstream and downstream primary equipment connections for each node.

[0061] Furthermore, the specific process of tracing the reverse path along the selected target primary equipment may include: recording the currently tracing target primary equipment and locating the next electrical node connected to the other end of the target primary equipment. It is then determined whether the next electrical node is connected to a power node, where a power node refers to an electrical facility capable of generating and outputting electrical energy, including thermal power generation nodes, hydropower generation nodes, etc.; if the electrical node is directly connected to a power node, the tracing stops, and the power node is recorded as the tracing endpoint; if the electrical node is not connected to a power node, the above steps are repeated to continue screening target primary equipment in the upstream power direction of the electrical node and to carry out the next round of reverse tracing.

[0062] It should be noted that during reverse path tracing, multiple power nodes may be traced (e.g., a combiner node connects to multiple power sources). If multiple power nodes are found connected at a combiner node or similar location, a hierarchical selection rule of "physical constraints first, operational status second, and scheduling requirements supplement" must be followed. The unique target power node must be determined by screening at each level to ensure that the traced power supply path has physical feasibility, operational effectiveness, and scheduling adaptability. The specific selection rules and execution process are as follows (in descending order of priority): I. Prioritize physical connection validity – eliminate power nodes without electrical connection. Verify the primary equipment continuity status between multiple power nodes and combiner nodes, and only retain power nodes with valid electrical connections: 1. All circuit breakers, disconnectors, and other switching equipment between the power supply node and the busbar node are in the closed state, with no disconnection points; 2. The primary equipment (transmission lines, transformers, etc.) connecting the branch lines has no fault alarms and has the ability to transmit power; 3. Eliminate power nodes that do not meet any of the above conditions to narrow down the candidate range.

[0063] II. Shortest electrical distance priority – Select the power node with the lowest transmission loss. Among the candidate power supply nodes with valid physical connectivity, the power supply node with the shortest electrical distance to the load node to be traced is selected first. The core purpose is to reduce power transmission loss and improve power supply efficiency. 1. Electrical distance calculation: Starting from the load node to be traced, trace back along the reverse path to each candidate power source node, and calculate the impedance weighted sum of the primary equipment in the path (resistance + reactance for transmission lines, short-circuit impedance for transformers, weighted according to power grid design specifications). The smaller the impedance weighted sum, the shorter the electrical distance. 2. If there are multiple power supply nodes with the same electrical distance, the node with the shorter physical path length shall be selected (determined based on the geographical / topological length of the actual transmission line and equipment).

[0064] III. Prioritize maximizing real-time operational margin – Select the power node with the most sufficient power supply capacity. If there are multiple power nodes with the shortest electrical distance, or if the power supply capacity is insufficient due to operating conditions, the power node with the largest real-time output margin should be selected first to ensure the stability of power transmission in the power supply path. 1. Output margin calculation: Rated output limit of power node - current real-time output value. The larger the margin value, the stronger the adjustable power supply capacity. 2. If it is a new energy power node (wind power, photovoltaic), it is necessary to combine the output forecast value (short-term 15 minutes / 30 minutes) and give priority to nodes with stable forecast output and sufficient margin; 3. Eliminate power supply nodes with a power margin ≤ 0 (already at full capacity) or whose real-time operating parameters (voltage, current) exceed the rated range.

[0065] Through the above operations, the target power node can be obtained.

[0066] Optionally, during the tracing process, it is necessary to record the primary equipment and corresponding electrical nodes of each round of tracing in real time, and organize them into a reverse tracing equipment link according to the tracing order (starting from the primary equipment above the load node to be traced and ending at the power node). The reverse tracing equipment link refers to the connection sequence of primary equipment and electrical nodes arranged in reverse tracing order, which can reflect the reverse path from the load node to be traced to the upstream power node.

[0067] In one implementation example, assume the target electrical node is busbar one (branch node). The power grid topology data shows that the target primary equipment connected to busbar one upstream of the power source is transmission line L3 (excluding equipment such as circuit breaker B connected downstream). Tracing back along transmission line L3, we record that the electrical node connected to the other end of transmission line L3 is busbar two. Retrieving the connection information of busbar two, we find that it is not directly connected to the power source node, and the target primary equipment connected upstream of the power source is transmission line L1.

[0068] Continuing the reverse tracing along transmission line L1, the other end of L1 is connected to circuit breaker one. The other end of circuit breaker one is directly connected to a power source node (thermal power generation node one), therefore the tracing stops. The reverse tracing equipment link is organized according to the tracing sequence: Circuit breaker B → Busbar one → Transmission line L3 → Busbar two → Transmission line L1 → Circuit breaker one → Thermal power generation node one. This link clearly reflects the reverse tracing path from the primary equipment above the load node to be traced (residential load node B) to the upstream power source node (thermal power generation node one).

[0069] After obtaining the reverse tracing device link, the reverse tracing device link can be reconstructed from the power node, through various electrical nodes, to the load node to be traced, in the direction of power transmission from the power source to the load, to obtain the initial source-load power supply path.

[0070] In this context, the direction of power transmission is the forward direction of power transmission from the power source node to the load node, which is opposite to the direction of reverse tracing. Based on this direction, the sequence of the reverse tracing device link is reconfigured.

[0071] In an optional embodiment, the reconfiguration rule can be as follows: starting from the power node, sequentially arrange the primary devices and electrical nodes in the reverse tracing order of the link, and finally end with the load node to be traced, ensuring that the reconfigured path sequence is consistent with the direction of power transmission. During the reconfiguration process, the order of primary devices and electrical nodes in the link can be checked one by one to correct the order reversal caused by reverse tracing, ensuring that the connection direction of each primary device matches the direction of power transmission, and that the upstream and downstream relationships of each electrical node conform to the forward power transmission logic of the power grid topology.

[0072] After reconfiguration, the source-load connection sequence arranged according to the direction of power transmission can be determined as the initial source-load power supply path. The initial source-load power supply path can be a power transmission path from the power source node to the load node to be traced that has not been validated.

[0073] In one implementation example, assume the reverse tracing device link is: Circuit Breaker B → Busbar 1 → Transmission Line L3 → Busbar 2 → Transmission Line L1 → Circuit Breaker 1 → Thermal Power Generation Node 1. It can be clearly stated that the direction of power transmission is forward from Thermal Power Generation Node 1 (power source node) to Residential Load Node B (the load node to be traced). Based on this direction, the reverse tracing device link is reconstructed sequentially: starting from Thermal Power Generation Node 1, the primary equipment and electrical nodes are arranged in reverse order of the reverse tracing sequence, in the following order: Thermal Power Generation Node 1 → Circuit Breaker 1 → Transmission Line L1 → Busbar 2 → Transmission Line L3 → Busbar 1 → Circuit Breaker B, ultimately ending at Residential Load Node B. After verification, the connection direction of each primary device and the upstream and downstream relationship of electrical nodes in the reconstructed sequence all conform to the forward power transmission logic. Therefore, this sequence is determined as the initial source-load power supply path: Thermal power generation node 1 → Circuit breaker 1 → Transmission line L1 → Bus 2 → Transmission line L3 → Bus 1 → Circuit breaker B → Residential load node B.

[0074] Next, based on whether the real-time operating status information of each primary device in the path meets the energy transmission continuity condition, each initial source-load power supply path can be effectively judged to obtain the target source-load power supply path.

[0075] Optionally, real-time operating status information refers to real-time data reflecting the current operating status of primary equipment, including switch status (closed or open), rated parameters (rated voltage, rated current, rated power), and real-time operating parameters (real-time voltage, real-time current, real-time power), etc.

[0076] Optionally, the conditions for continuous energy transmission can be specified. These conditions refer to the prerequisites for ensuring that electrical energy can be continuously and stably transmitted along the power supply path. Specifically, they include two aspects: First, all primary devices in the path are in a closed state, and no disconnected devices cause the path to be interrupted; second, the real-time operating parameters of all primary devices in the path are within their rated parameter range, and there are no abnormal conditions such as overload or overvoltage, and they can withstand the electrical energy transmission load in the path.

[0077] Furthermore, based on the energy transmission continuity condition, the operation of effectively judging each initial source-load power supply path may include: checking the real-time operating status information of each primary device in the path one by one; if all primary devices meet the requirements of closed switch status and real-time operating parameters within the rated parameter range, then the initial source-load power supply path is determined to meet the energy transmission continuity condition and is a valid path; if any primary device does not meet the above conditions (such as open switch or real-time current exceeding rated current), then the initial source-load power supply path is determined to not meet the energy transmission continuity condition and is an invalid path, and is eliminated.

[0078] Subsequently, the initial source load power supply path that is determined to be an effective path can be identified as the target source load power supply path. The target source load power supply path refers to an effective power supply path that can stably transmit electrical energy from the upstream power node to the load node to be traced.

[0079] In one implementation example, assume the initial power supply path is: Thermal power generation node 1 → Circuit breaker 1 → Transmission line L1 → Busbar 2 → Transmission line L3 → Busbar 1 → Circuit breaker B → Residential load node B. Retrieve the real-time operating status information of each primary device in this path: Circuit breaker 1 is closed, real-time current is 300 A, rated current is 500 A; Transmission line L1 is closed, real-time voltage is 110 kV, rated voltage is 110 kV; Transmission line L3 is closed, real-time power is 20 MW, rated power is 50 MW; Circuit breaker B is closed, real-time current is 150 A, rated current is 300 A.

[0080] Furthermore, the energy transmission continuity condition can be verified: all primary devices in the path are in a closed state, with no path interruption; and the real-time operating parameters (real-time current, real-time voltage, real-time power) of all primary devices are within their corresponding rated parameter ranges, with no overload, overvoltage, or other abnormal conditions, thus meeting the energy transmission continuity condition. Therefore, this initial source load power supply path is determined to be a valid path and identified as the target source load power supply path. If another initial source load power supply path contains an open isolating switch, then this path does not meet the energy transmission continuity condition and is eliminated, not included in the target source load power supply path.

[0081] The above steps can achieve comprehensive identification of the power supply path of the load node to be traced that is not directly connected to the power source, making up for the shortcomings of direct power supply path identification. This ensures that the power supply path coverage within the source-load associated zone is complete. Therefore, the source-load output coordination scheduling strategy can be reasonably determined through the target source-load power supply path, ensuring the safe and stable operation of the power system.

[0082] S12. Determine the connection relationship between the terminal primary device of the source-load output interaction path and the adjacent source-load associated partition, and construct an interaction extension path according to the connection relationship. The interaction extension path is a transmission path in which the power node in a source-load associated partition has an output influence on the load node in the remaining connected source-load associated partition through the physical connection of the power grid.

[0083] In one embodiment, the transmission path analysis can be performed based on the source-load output interaction path of each source-load associated partition and the interaction boundary between each source-load associated partition to obtain the interaction extension path between each source-load associated partition.

[0084] Optionally, the interaction boundary between each source-load associated partition can be obtained. The interaction boundary refers to the physical boundary separating different source-load associated partitions. There are power equipment connecting different source-load associated partitions on this boundary, including cross-partition transmission lines, interconnecting transformers, etc.

[0085] Furthermore, the source-load output interaction path of each source-load associated partition can be extended and analyzed. Specifically, the power equipment at the end of each source-load output interaction path can be traced to obtain the terminal primary equipment, and it can be determined whether the terminal primary equipment belongs to the cross-partition connection equipment on the interaction boundary. If it does, then starting from the cross-partition connection equipment, the electrical paths connected to the equipment in the adjacent source-load associated partitions can be traversed to obtain the interaction extension path.

[0086] In an optional embodiment, determining the connection relationship between the end primary device of the source-load output interaction path and the adjacent source-load associated partition, and constructing the interaction extension path based on the connection relationship, may include the following sub-steps: S121. Determine multiple end primary devices from each of the source-load output interaction paths, wherein the end primary device is a primary device in the source-load output interaction path whose distance from the load node meets a preset distance condition or is located at the boundary of the source-load associated partition.

[0087] S122. Select several initial interaction boundary devices from the multiple end primary devices, wherein the initial interaction boundary devices are end primary devices that are connected across adjacent source-load associated partitions and have an electrical connection relationship with the electrical network of adjacent source-load associated partitions.

[0088] S123. Select a target interaction boundary device from a plurality of initial interaction boundary devices, wherein the target interaction boundary device is an initial interaction boundary device with power output capability.

[0089] S124. Construct an interactive extension path based on the functional attribute type of the first electrical node connected to the target interactive boundary device in the adjacent source-load association partition, wherein the functional attribute type refers to the power grid functional attribute implemented by the electrical node in the power grid.

[0090] For each source-load associated partition, the connection result across partitions can be obtained by determining whether the end primary device is connected to another source-load associated partition based on the interaction boundary between the various source-load associated partitions.

[0091] For each source-load associated partition, the end primary devices of all source-load output interaction paths within that partition can be identified. The end primary device refers to the primary device closest to the load node in the source-load output interaction path, or the primary device whose path extends to the edge of the source-load associated partition.

[0092] For example, path 1: thermal power generation node → circuit breaker 1 → transmission line L1 → bus 1 → circuit breaker 2 → industrial load node A; Circuit breaker 2 is directly connected to industrial load node A and is the "critical equipment closest to the load" (meets the condition), so it is determined to be a terminal primary equipment.

[0093] For example, in path 2: hydropower node → disconnector 1 → transmission line L2 → interconnecting transformer T1; The interconnecting transformer T1 is located on the interaction boundary between zone 1 and zone 2 (meeting the conditions), and is determined to be the end primary equipment.

[0094] Furthermore, the interaction boundary data of the end-point primary device can be matched with that of the source-load associated partition to determine whether each end-point primary device is located on the interaction boundary and whether the electrical node or primary device connected to its other end belongs to another source-load associated partition. Optionally, the determination criteria are: whether the installation location coordinates of the end-point primary device fall within the range defined by the interaction boundary, and whether the port connection information of the primary device contains an electrical node identifier or primary device identifier belonging to another source-load associated partition.

[0095] Based on the judgment results, cross-partition connection results can be generated, which are divided into "cross-partition connection" and "non-cross-partition connection". "Cross-partition connection" means that the end primary device is on the interaction boundary and the other end is connected to another source-load associated partition; "non-cross-partition connection" means that the end primary device is not on the interaction boundary, or although it is on the interaction boundary, the other end is still connected to the same source-load associated partition.

[0096] In one implementation example, assume there are three source-load associated partitions: Partition 1, Partition 2, and Partition 3. The interaction boundary between Partition 1 and Partition 2 is called Boundary 1, and the interaction boundary between Partition 2 and Partition 3 is called Boundary 2. Retrieving the source-load output interaction path data for Partition 1, the primary devices at the end of the three paths are identified as Circuit Breaker 1, Transmission Line 1, and Disconnect Switch 1. Retrieving the interaction boundary (Boundary 1) data for Partition 1, its scope includes the middle section and both ends of Transmission Line 1.

[0097] In the above example, a matching judgment can be performed: the installation location of circuit breaker one is not within the boundary of zone one, and it is judged as "non-cross-zone connection"; the installation location of transmission line one is within the boundary of zone one, and its port connection information far from zone one contains the busbar two identifier of zone two, and it is judged as "cross-zone connection", with the target source load associated zone being zone two; although the installation location of disconnector one is close to boundary one, it is not within the defined range, and its other end is still connected to busbar one of zone one, and it is judged as "non-cross-zone connection". The final result for the cross-zone connection of zone one is: transmission line one is the primary device at the end of the cross-zone connection, connected to zone two; circuit breaker one and disconnector one are the primary devices at the end of the non-cross-zone connection. Similarly, the cross-zone connection results for zone two and zone three can be judged.

[0098] Next, based on the cross-regional connection results, the source-load output interaction path corresponding to the terminal primary device that crosses the interaction boundary in each source-load associated region can be identified as the cross-regional interaction path. Based on the port connection information of the terminal primary device in the primary wiring diagram of the power grid in the cross-regional interaction path, it can be determined whether the terminal primary device has an electrical connection relationship with the electrical network of the adjacent source-load associated region, thus obtaining the electrical attribution result.

[0099] In actual operation, the power grid primary wiring diagram port connection information of the terminal primary equipment in each cross-regional interaction path can be retrieved. The power grid primary wiring diagram refers to the structured data corresponding to the drawing that reflects the electrical connection relationship of primary equipment in the power grid, including the port number of the primary equipment, the electrical node or primary equipment identification connected to each port, the connection method (fixed connection or switchable connection), and other information.

[0100] Next, based on the port connection information, the electrical components (electrical nodes or primary devices) connected to the ports of the end primary devices on the side away from the source-load associated partition can be traced, and the source-load associated partition to which the electrical component belongs can be determined, that is, whether it belongs to the electrical network of the adjacent source-load associated partition.

[0101] The specific determination process in this embodiment of the invention is as follows: extract the electrical component identifiers of the terminal primary equipment connected across the partition side ports, and match the identifiers with the list of electrical network components of the adjacent source-load associated partition (including the identifiers of all electrical nodes and primary equipment in the partition).

[0102] If the match is successful, it means that the terminal primary device has a direct electrical connection with the electrical network of the adjacent source-load associated zone; if the match fails, it means that although the terminal primary device is at the interaction boundary, the cross-zone side port is not actually connected to the electrical network of the adjacent zone (such as being in a disconnected state or connected to a non-grid component), so there is no electrical connection.

[0103] Next, electrical attribution results can be generated based on the above judgment results. The electrical attribution results are divided into "attributed to adjacent zone electrical network" and "not attributed to adjacent zone electrical network".

[0104] In one implementation example, assume that the cross-regional interaction path of Zone 1 is a path that includes the terminal primary equipment transmission line 1. Retrieving the port connection information of the primary wiring diagram of transmission line 1, it is found that the port closer to Zone 1 is connected to bus 1 of Zone 1, and the port farther from Zone 1 (cross-regional side port) is connected to the electrical node identified as "bus 2".

[0105] The list of electrical network components for the adjacent source-load associated zone (zone two) of zone one is retrieved. The list contains the identifier "busbar two", indicating that the electrical node belongs to the electrical network of zone two. The identifier "busbar two" is matched with the list, and the match is successful. Therefore, it is determined that transmission line one has an electrical connection with the electrical network of the adjacent source-load associated zone (zone two), and the electrical attribution result is "belongs to the adjacent zone electrical network".

[0106] If there is another cross-regional interaction path for Zone 2, and its terminal primary device is Interconnecting Transformer 1, retrieve its power grid primary wiring diagram port connection information. It is found that the electrical component connected to its cross-regional side port is identified as "Temporary Terminal 1". Match this identifier with the list of electrical network components of the adjacent zone (Zone 3) of Zone 2. The match fails, and it is verified that the temporary terminal is not connected to the electrical network of Zone 3. Therefore, it is determined that Interconnecting Transformer 1 and the electrical network of the adjacent zone (Zone 3) have no electrical connection relationship, and the electrical attribution result is "not belonging to the electrical network of the adjacent zone".

[0107] Next, based on the electrical attribution results, the initial interaction boundary devices between each source-load associated zone can be determined. Based on the device operating status information of the initial interaction boundary devices in the current operating state, it can be determined whether power is allowed to be transmitted unidirectionally or bidirectionally from this zone to the adjacent zone, and the power output determination result can be obtained.

[0108] In one operating mode, each terminal primary device is screened based on its electrical attribution result: only devices with an electrical attribution result of "belonging to the adjacent zone electrical network" are retained; devices with an electrical attribution result of "not belonging to the adjacent zone electrical network" are removed (such as terminal devices with temporary terminals connected across zone sides, or those not connected to the adjacent zone power grid). The screening criteria are as follows: the core requirement for initial interaction boundary devices is "a direct electrical connection to the adjacent zone electrical network," and the electrical attribution result is obtained by "matching the electrical component identifiers connected to the terminal device's port with the component list of the adjacent zone electrical network." A successful match proves the existence of a direct connection. After the above screening steps, the remaining devices are the initial interaction boundary devices.

[0109] Initial interaction boundary equipment refers to primary equipment located on the interaction boundary of source-load associated zones and having a direct electrical connection with the electrical network of adjacent source-load associated zones.

[0110] Optionally, the device condition information of each initial interaction boundary device in its current operating state can be retrieved. The current operating state refers to the real-time operation of the power grid, and the device condition information refers to real-time data reflecting the current operating state of the initial interaction boundary device, including switch status (closed or open), real-time voltage, real-time current, real-time power, device type (e.g., unidirectional transmission line, bidirectional transmission line, interconnection transformer), and operating mode (e.g., step-up mode, step-down mode). Simultaneously, the power transmission determination criteria are clearly defined: based on device type and operating mode, the permitted power transmission direction of the device is determined; based on switch status and real-time parameters, it is determined whether the device currently possesses power transmission capability.

[0111] Optionally, the specific determination process in this embodiment of the invention is as follows: The first step is to check the switch status of the initial interaction boundary device. If it is in the off state, the device is determined to be unable to transmit power, and the power output determination result is "output not allowed"; if it is in the closed state, proceed to the next step of determination.

[0112] The second step is to analyze the permitted direction of power transmission based on the equipment type and operating mode: if the equipment is a unidirectional transmission line or a unidirectional interconnection transformer, or the operating mode is set to unidirectional transmission, then it is determined that power is allowed to be transmitted unidirectionally from this zone to the adjacent zone; if the equipment is a bidirectional transmission line or a bidirectional interconnection transformer, and the operating mode does not restrict the transmission direction, then it is determined that bidirectional power transmission is allowed.

[0113] The third step is to check whether the real-time voltage, real-time current, and real-time power parameters are within the rated parameters of the equipment. If they are outside the range, it means that the equipment cannot currently withstand the power transmission load and is judged as "not allowed to output". If they are within the range, the final power output judgment result is determined by combining the transmission direction judgment result of the second step.

[0114] Furthermore, power output determination results can be generated, which are divided into "allowing unidirectional transmission (from this partition to adjacent partitions)," "allowing bidirectional transmission," and "not allowing output."

[0115] In one implementation example, assume the initial interaction boundary device is transmission line one (belonging to electrical network of partition two). Retrieve the current operating status information of transmission line one: switch status is closed, device type is bidirectional transmission line, operating mode does not restrict transmission direction, real-time voltage is 110 kV (rated voltage range is 100-120 kV), real-time current is 280 A (rated current is 500 A), and real-time power is 30 MW (rated power is 60 MW).

[0116] Based on the judgment process: First, the switch is in a closed state, which meets the basic conditions for power transmission; The second step is that the equipment type is a bidirectional transmission line and there is no restriction on the transmission direction, so bidirectional transmission is allowed. Thirdly, all real-time parameters are within the rated parameter range, indicating that the equipment has the capacity to withstand the power transmission load. Therefore, the power output determination result for transmission line one is "bidirectional transmission permitted".

[0117] If there is another initial interaction boundary device, the interconnecting transformer 2, and its equipment condition information is: the switch state is closed, the equipment type is a unidirectional interconnecting transformer, the operating mode is set to only allow power transmission from zone 3 to zone 2, and the real-time parameters are all within the rated range, then its power output determination result is "unidirectional transmission allowed (zone 3 to zone 2)"; if the switch state of an initial interaction boundary device, the isolating switch 2, is open, then the power output determination result is directly determined to be "output not allowed".

[0118] In one embodiment, the interaction extension path is determined based on the power output determination result and the functional attribute type of the first electrical node connected by the initial interaction boundary device in the adjacent source-load association partition.

[0119] Among them, the functional attribute type is the power grid functional attribute implemented by the electrical node, including the convergence function, the branching function, the transmission function, etc. The convergence function refers to the function of aggregating multiple upstream power sources, the branching function refers to the function of diverting upstream power sources to multiple downstream sources, and the transmission function refers to the function of only realizing the one-way transmission of power.

[0120] Optionally, the interaction extension path can be determined based on the power output determination result and the functional attribute type of the first electrical node connected to the initial interaction boundary device in the adjacent source-load association zone. The interaction extension path represents the transmission path through which a power node in one source-load association zone exerts its output influence on load nodes in other source-load association zones via the physical connection to the power grid.

[0121] The above operations ensure the integrity of the interactive extension path, thereby enabling accurate determination of the coordinated scheduling strategy and guaranteeing the safe and stable operation of the power system.

[0122] In one embodiment, constructing the interaction extension path based on the functional attribute type of the first electrical node connected to the target interaction boundary device in the adjacent source-load association partition may include the following sub-steps: S1241. Obtain the first electrical node connected to the target interactive boundary device in the adjacent source-load association partition, and determine the starting point of the extension path based on the first electrical node, wherein the starting point of the extension path is the location point of the downstream primary device in one or more downstream power supply branches connected to the first electrical node in the downstream load direction.

[0123] S1242. Based on the functional attribute type of the first electrical node, the next level electrical node is traversed and connected step by step along the direction of power flow, starting from the starting point of the extension path, to obtain the forward extension path.

[0124] S1243. Merge the forward extension path with the conductive power supply path corresponding to the target interactive boundary device to obtain an interactive extension path. The conductive power supply path is the source-load output interaction path where the target interactive boundary device is located when the power nodes in the source-load output interaction path corresponding to the target interactive boundary device are in normal operating condition and all primary devices in the source-load output interaction path are in a conducting state.

[0125] In one embodiment, the initial interactive boundary device that has the power output capability can be used as the target interactive boundary device. If the power nodes in the source-load output interaction path corresponding to the target interactive boundary device are in normal operation and all primary devices in the path are in the conducting state, then the source-load output interaction path corresponding to the target interactive boundary device is determined as the conductive power supply path.

[0126] Optionally, an initial interaction boundary device with power output capability refers to an initial interaction boundary device whose determination result allows unidirectional transmission (from this partition to the adjacent partition) or bidirectional transmission, i.e., a target interaction boundary device.

[0127] Optionally, target interaction boundary devices are selected from the initial interaction boundary devices, and the source load output interaction path corresponding to each target interaction boundary device is retrieved to identify the power node corresponding to the path and all primary devices included in the path.

[0128] Furthermore, the operating status of the power node is checked. The normal operating status of the power node refers to the real-time output parameters of the power node being within the rated output range, the absence of fault alarms in key components, and the ability to continuously output power. The verification is based on the real-time operation monitoring data of the power node.

[0129] Next, the conduction status of all primary devices in the source-load output interaction path corresponding to the target interaction boundary device is checked one by one. The conduction status means that the switching elements of the primary device (such as circuit breakers and disconnectors) are in the closed state, and the device has no short circuits, overloads, or other faults, enabling effective power transmission. The verification is based on the switch status data and fault alarm data in the real-time operating information of each primary device. If any primary device in the path is not in the conduction state, the path is determined to lack power transmission capability.

[0130] Furthermore, if the power node in the source-load output interaction path corresponding to the target interaction boundary device is in normal operating condition and all primary devices in the path are in a conductive state, then the source-load output interaction path is determined as a conductive power supply path. A conductive power supply path refers to a basic power supply path capable of stably transmitting power from the power node of the current source-load associated zone to adjacent source-load associated zones. Adjacent source-load associated zones refer to source-load associated zones connected to the current source-load associated zone through an interaction boundary. If any of the above conditions are not met, the path is not determined as a conductive power supply path and is discarded. Simultaneously, the target interaction boundary device, power node, and primary device information in the path corresponding to the conductive power supply path are recorded.

[0131] In one implementation example, assuming that the source-load associated partition 1 and the adjacent partition 2 have a determined target interaction boundary device as transmission line 1 (the power output determination result is that bidirectional transmission is allowed), the corresponding source-load output interaction path is "thermal power generation node 1 → circuit breaker 1 → transmission line 2 → bus 1 → transmission line 1".

[0132] Next, the following can be verified: The real-time output of thermal power generation node one is 40 MW (rated output range is 0-60 MW), there are no fault alarms, and it is in normal operation; the primary equipment included in the path is circuit breaker one, transmission line two, and transmission line one. The real-time operating information shows that the switch status is closed, there are no fault alarms such as short circuit or overload, and they are all in the conducting state.

[0133] Therefore, it is determined that the source-load output interaction path has the ability to conduct electrical energy, and it is identified as a power supply path with conduction capability. The recorded information is as follows: the target interaction boundary equipment corresponding to the power supply path with conduction capability is transmission line one, the power node is thermal power generation node one, and the primary equipment includes circuit breaker one, transmission line two, and transmission line one.

[0134] If the other target interaction boundary device is the first interconnecting transformer, and the second disconnecting switch in its corresponding source-load output interaction path is in the open state (not conducting), then the path is determined to have no power conduction capability and is not identified as a power supply path with conduction capability.

[0135] In one embodiment, after determining the target interaction boundary device, the first electrical node connected to the target interaction boundary device in the adjacent source-load association partition can be obtained, and the starting point of the extension path can be determined based on the first electrical node, wherein the starting point of the extension path is the location point of the downstream primary equipment in one or more downstream power supply branches connected to the downstream load direction by the first electrical node.

[0136] The first electrical node refers to the electrical node in the adjacent source-load associated partition that is directly connected to the port on the side of the initial interaction boundary device away from the source-load associated partition.

[0137] Based on the functional attribute type, the path of extension is started from the primary equipment in one or more downstream power supply branches connected to the downstream load direction of the first electrical node. The path of extension is then traversed level by level along the direction of power flow to the next level of electrical nodes connected to it until the downstream power supply branch reaches a load node, thus obtaining the forward extension path.

[0138] In one operating mode, the power supply branch in the downstream load direction can be determined based on the functional attribute type of the first electrical node. The downstream load direction refers to the direction from the first electrical node to the load node in the adjacent source-load associated zone. The downstream power supply branch refers to the potential power transmission branch composed of primary equipment and electrical nodes that extends from the first electrical node along the downstream load direction.

[0139] If the first electrical node has a branch function, there are multiple downstream power supply branches; if it has a combiner or transmission function, there is usually only one downstream power supply branch.

[0140] In one operating mode, the downstream primary equipment in each downstream power supply branch can be used as the starting point of the extended path. The downstream primary equipment refers to the first primary equipment connected to the first electrical node along the downstream load direction, and the next level electrical node connected to it is traversed step by step along the direction of power flow (i.e., from the first electrical node to the load node).

[0141] During the traversal, the primary equipment and electrical node information of each level are recorded in real time, and the traversal path is checked to see if it reaches the load node: if the electrical node being traversed is directly connected to the load node, the traversal of that branch is stopped; if it is not connected to the load node, the traversal continues to the next level of primary equipment and corresponding electrical nodes connected to the electrical node in the downstream load direction, until the load node is reached.

[0142] Furthermore, each traversed path from the first electrical node to the load node is defined as a forward extension path. A forward extension path refers to the power conduction path of the target interactive boundary device extending to the load node within the adjacent source-load associated partition.

[0143] If a downstream power supply branch reaches the boundary of the adjacent source-load associated zone but still fails to reach the load node, it is determined that the branch has no effective forward extension path and is therefore eliminated.

[0144] In one implementation example, assume the target interaction boundary device is transmission line one, and its first electrical node connected within adjacent source-load associated zone two is bus two. Retrieving the functional attribute type data of bus two reveals it to be a branch function (capable of diverting power to multiple downstream loads). Retrieving the power grid topology data for zone two shows that bus two has two power supply branches along the downstream load direction: the downstream primary device of the first branch is circuit breaker two, and the downstream primary device of the second branch is disconnector three.

[0145] For the first branch, starting from circuit breaker two, traverse along the direction of power flow: the next-level electrical node connected to circuit breaker two is busbar three. Busbar three is not directly connected to a load node. Continue traversing along the downstream load direction of busbar three to the primary equipment connected to transmission line three. The next-level electrical node connected to transmission line three is circuit breaker three. Circuit breaker three is directly connected to industrial load node one, so stop traversing. Record this branch path: busbar two → circuit breaker two → busbar three → transmission line three → circuit breaker three → industrial load node one, and determine it as the first forward extension path.

[0146] For the second branch, starting from disconnector switch three, traverse along the direction of power flow: the next-level electrical node connected to disconnector switch three is circuit breaker four, which directly connects to residential load node one, and stop traversing. Record the branch path: busbar two → disconnector switch three → circuit breaker four → residential load node one, and determine it as the second forward extension path. If there is a third downstream power supply branch, and after traversing to transmission line four at the boundary of zone two, it still does not connect to a load node, then it is determined that the branch has no valid forward extension path and is discarded.

[0147] Finally, the forward extension path and the conductive power supply path corresponding to the target interaction boundary device can be merged to obtain the interaction extension path.

[0148] In one operating mode, the conductive power supply path can be connected to the corresponding forward extension path by using the end of the conductive power supply path (i.e., the port of the target interactive boundary device that is far away from the source load associated partition) as the connection point.

[0149] In a specific connection method, the terminal electrical node of the conductive power supply path (i.e., the first electrical node of the target interactive boundary device in the adjacent partition) and the starting electrical node of the forward extension path can be taken as the same node, and the primary devices and electrical nodes of the two paths can be directly integrated according to the power transmission sequence to form a complete cross-partition conductive path.

[0150] During the merging process, the continuity of the two types of paths needs to be verified to ensure that the electrical nodes at the connection points are consistent and the power transmission direction is matched (both from the power supply node of the load-related zone to the load node of the adjacent zone). If multiple forward extension paths correspond to the same conductive capacity power supply path, the conductive capacity power supply path is merged with each forward extension path to obtain multiple interactive extension paths; if a conductive capacity power supply path does not have a corresponding valid forward extension path, an interactive extension path cannot be formed and is discarded.

[0151] In one implementation example, assume the power supply path with conductive capacity is “thermal power generation node 1 → circuit breaker 1 → transmission line 2 → bus 1 → transmission line 1”, with its end being the port of transmission line 1 in section 2, and the corresponding first electrical node being bus 2; the forward extension path 1 obtained by sub-step 2042 is “bus 2 → circuit breaker 2 → bus 3 → transmission line 3 → circuit breaker 3 → industrial load node 1”, and the forward extension path 2 is “bus 2 → disconnector 3 → circuit breaker 4 → residential load node 1”.

[0152] Path merging: The conductive power supply path and forward extension path one are connected via busbar two, and integrated according to the power transmission sequence to obtain the following path: "Thermal power generation node one → Circuit breaker one → Transmission line two → Busbar one → Transmission line one → Busbar two → Circuit breaker two → Busbar three → Transmission line three → Circuit breaker three → Industrial load node one," which is designated as interactive extension path one. The conductive power supply path and forward extension path two are connected via busbar two, and integrated to obtain the following path: "Thermal power generation node one → Circuit breaker one → Transmission line two → Busbar one → Transmission line one → Busbar two → Disconnecting switch three → Circuit breaker four → Residential load node one," which is designated as interactive extension path two. Both paths meet the requirements of connection continuity and transmission direction matching, ultimately forming two complete interactive extension paths.

[0153] The above operations ensure the integrity of the interactive extension path, comprehensively consider the transmission constraints and impact range of source load output between different zones, accurately determine the collaborative scheduling strategy, and guarantee the safe and stable operation of the power system.

[0154] S13. Select target interaction paths that satisfy a preset power flow direction from the source-load output interaction paths and target extension paths that satisfy a preset conduction direction from the interaction extension paths. Construct a source-load output collaborative feasible domain based on the operating parameters of the target interaction paths and the target extension paths, as well as several preset constraint output combinations. The power flow direction is the path direction in which nodes within the source-load output interaction paths are connected, and the conduction direction is the path direction in which the source-load associated partitions within the interaction extension paths are connected.

[0155] In one embodiment, target interaction paths satisfying a preset power flow direction can be selected from the source-load output interaction paths, and target extension paths satisfying a preset conduction direction can be selected from the interaction extension paths. Next, based on the operating parameters of the target interaction paths and target extension paths as constraints, a source-load output collaborative feasible domain can be constructed using several preset constraint output combinations. Here, the power flow direction is the path direction through which nodes within the source-load output interaction path are connected, and the conduction direction is the path direction through which source-load associated partitions within the interaction extension path are connected.

[0156] It should be noted that power flow direction refers to the direction of electrical energy transmission within an electrical path, while conduction direction is essentially the same. Power flow direction describes the direction of electrical energy transmission along the interaction path of source and load outputs within a single source-load associated zone, and refers to the electrical path within the zone. Conduction direction describes the direction of electrical energy transmission along the interaction extension path across source-load associated zones, and refers to the cross-boundary conduction path between zones.

[0157] Therefore, power flow direction emphasizes the physical characteristics of power grid operation and directly corresponds to the concept of power flow calculation, describing the direction of electrical energy flow in branches. Conduction direction emphasizes the interaction characteristics between zones, highlighting the directionality of electrical energy conduction from one zone to another.

[0158] It can also be understood that the two are physically identical, both being the direction of electrical energy transmission. They are just different terms used in different analysis scenarios. The power flow direction corresponds to the path within a partition, and the conduction direction corresponds to the path across partitions. Both are the direction of electrical energy transmission. Specifically, by comparing the current operating parameters and rated parameters of each power device on the path, and combining the initial data of the power flow distribution of the power grid, the actual power flow direction of each path is determined by power flow calculation. For example, the power flow calculation in this embodiment of the invention can be: based on the voltage parameters of the power node at the beginning of the path and the voltage parameters of the load node at the end, combined with the impedance parameters of each power device on the path, the direction of electrical energy transmission on the path, i.e., the power flow direction, is determined by calculating the voltage drop and power loss segment by segment.

[0159] In one embodiment, the step of selecting target interaction paths that satisfy a preset power flow direction from the source load output interaction paths and selecting target extension paths that satisfy a preset conduction direction from the interaction extension paths, and constructing a source load output cooperative feasible domain based on the operating parameters of the target interaction paths and the target extension paths and several preset constraint output combinations, may include the following sub-steps: S131. Obtain multiple branch device paths within the source-load output interaction path, and filter from the multiple branch device paths based on a preset power flow direction to obtain a target interaction path, wherein the target interaction path is a path in which the physical running direction of the branch devices is the same as the preset power flow direction, and the branch device path is the connection path of the branch devices within the source-load output interaction path.

[0160] S132. Obtain multiple cross-regional boundary branches contained in the interactive extension path, and filter out a target extension path from the multiple cross-regional boundary branches based on a preset conduction direction, wherein the target extension path is a cross-regional boundary branch that includes a preset conduction direction, a maximum transmission parameter that meets a parameter threshold, and an operating temperature that meets a temperature threshold.

[0161] S133. Construct a source-load output collaborative feasible domain based on the rated operating parameters of the first electrical component of the target interaction path, the operating status parameters of the second electrical component of the target interaction path, and several preset constraint output combinations, wherein the first electrical component is an electrical device on the power grid energization path traversed by the target interaction path, and the second electrical component is an electrical device on the cross-regional conduction path involved in the target extension path crossing the partition boundary.

[0162] In one embodiment, the consistency of equipment operation mode can be judged based on the first branch connection sequence of each source-load output interaction path in the power grid topology and its corresponding power flow direction, combined with the physical operation mode of each branch equipment in the power grid, to obtain a first judgment result. Here, branch equipment refers to the primary equipment in the power grid topology that constitutes a single power transmission branch.

[0163] Optionally, the first branch connection sequence corresponding to each source-load output interaction path can be extracted from the power grid topology data. The first branch connection sequence refers to the connection combination of all branch equipment and electrical nodes arranged in the power transmission order in the path, thus obtaining the branch equipment path.

[0164] Next, the physical operation mode of each branch equipment in each branch equipment path can be clarified. The physical operation mode refers to the power transmission direction and core operation mode specified in the design of the branch equipment (such as the design transmission direction of a unidirectional transmission line, the power flow direction corresponding to the step-up / step-down operation of the transformer, the allowable current flow direction of the circuit breaker, etc.).

[0165] Then, the physical operation mode of each branch device in each source-load output interaction path is matched and judged with the power flow direction of the path: if the power flow direction of the source-load output interaction path is consistent with the power transmission direction specified by the physical operation mode of the branch device in that branch device path, then the branch device is judged to be qualified; if all branch devices are qualified, the consistency judgment result of the device operation mode of the source-load output interaction path is "consistent", that is, the first judgment result is "consistent"; if any branch device is unqualified, the first judgment result is "inconsistent".

[0166] In one implementation example, assume there are two source-load output interaction paths (Path 1 and Path 2). The first branch connection sequence of Path 1 is "thermal power generation node 1 → circuit breaker 1 → transmission line 1 → bus 1 → circuit breaker 2 → industrial load node 1", with a power flow direction of "thermal power generation node 1 → industrial load node 1". Among the branch equipment included in Path 1, transmission line 1 is a unidirectional transmission line, and its physical operation mode specifies a transmission direction of "thermal power generation node side → industrial load node side", consistent with the power flow direction of Path 1. Circuit breaker 1 and circuit breaker 2 have no directional restrictions in their physical operation modes; therefore, the first judgment result for Path 1 is "consistent".

[0167] The first branch connection sequence of Path 2 is "Hydropower Node 1 → Disconnecting Switch 1 → Transmission Line 2 → Busbar 2 → Circuit Breaker 3 → Residential Load Node 1", and the power flow direction is "Residential Load Node 1 → Hydropower Node 1". Transmission Line 2 in Path 2 is a unidirectional transmission line, and the transmission direction specified by the physical operation mode is "Hydropower Node Side → Residential Load Node Side", which is opposite to the power flow direction of Path 2. Therefore, the first judgment result of Path 2 is "inconsistent".

[0168] Next, based on the first judgment result, the source load output interaction path that is consistent with the power flow direction and the equipment operation mode can be selected to obtain the target interaction path.

[0169] Optionally, all source-load output interaction paths are screened one by one, with the screening criterion being that the first judgment result is "consistent". For source-load output interaction paths with a first judgment result of "consistent", it means that their power flow direction matches the physical operation mode of all branch equipment in the path, and they have the basic conditions for safe power transmission, thus being identified as target interaction paths. For source-load output interaction paths with a first judgment result of "inconsistent", it means that there is a conflict between the operation mode of branch equipment and the power flow direction, and putting them into operation may lead to equipment failure or power transmission interruption, thus they are eliminated and not listed as target interaction paths. During the screening process, the first branch connection sequence, power flow direction, and corresponding power node and load node information of each target interaction path must be recorded simultaneously.

[0170] Based on the above example, assuming the first judgment result is retrieved: in the source-load-output interaction path, the first judgment result for path one is "consistent", while for path two it is "inconsistent".

[0171] Path 1 meets the standard of "the first judgment result is consistent" and is determined as the target interaction path. The recorded information includes the first branch connection sequence "thermal power generation node 1 → circuit breaker 1 → transmission line 1 → bus 1 → circuit breaker 2 → industrial load node 1", the power flow direction "thermal power generation node 1 → industrial load node 1", the power source node is thermal power generation node 1, and the load node is industrial load node 1. Path 2 does not meet the standard and is eliminated.

[0172] In one embodiment, the physical feasibility of cross-regional transmission can be judged based on the second branch connection sequence of each interactive extension path in the power grid topology and its corresponding transmission direction, combined with the physical operation constraints of each cross-regional boundary branch in the power grid, to obtain a second judgment result. Here, cross-regional boundary branch refers to branch equipment (such as cross-regional transmission lines, interconnection transformers, etc.) located on the interaction boundary of source-load association partitions and used to connect different source-load association partitions.

[0173] In one embodiment, the second branch connection sequence corresponding to each interactive extension path can be extracted from the power grid topology data. The second branch connection sequence refers to the connection combination of all branch equipment and electrical nodes arranged in the order of power conduction in the path, with a focus on cross-regional boundary branches.

[0174] Next, the physical operating constraints of each cross-regional boundary branch in each path can be clarified. The physical operating constraints refer to the parameter range and operating conditions allowed for the normal operation of the cross-regional boundary branch (such as rated voltage range, rated current range, upper limit of allowed transmission power, allowed conduction direction, minimum operating temperature, etc.).

[0175] Then, the physical operation constraints and path conduction direction of each cross-regional boundary branch in each interactive extension path are judged for compatibility: if the path conduction direction is within the allowable conduction direction range of the cross-regional boundary branch, and the power transmission load corresponding to the conduction direction does not exceed the rated parameter limit of the branch (judged by a preset load estimation method, that is, based on the maximum possible output of the power node at the starting point of the path and the maximum possible demand of the load node at the end point, the potential transmission load of the branch is estimated and it is judged whether it is within the rated power limit), then the cross-regional boundary branch is judged to be compatible; if all cross-regional boundary branches are compatible, the cross-regional conduction physical feasibility judgment result of the interactive extension path is "feasible", that is, the second judgment result is "feasible"; if any cross-regional boundary branch is not compatible, the second judgment result is "infeasible".

[0176] In one embodiment, there are two interactive extension paths (path A and path B). The second branch connection sequence of path A is "thermal power generation node 1 → circuit breaker 1 → transmission line 1 → interconnecting transformer 1 → transmission line 3 → industrial load node 2" (where interconnecting transformer 1 and transmission line 3 are cross-regional boundary branches), and the conduction direction is "zone 1 → zone 2". The physical operating constraints of interconnecting transformer 1 are that bidirectional conduction is allowed, with a rated power limit of 50 MW; the physical operating constraints of transmission line 3 are that conduction from zone 1 to zone 2 is allowed, with a rated current limit of 400 A. Through load estimation, the potential transmission load corresponding to the conduction direction of path A is 30 MW, and the current is 250 A, both within the rated parameter range. Therefore, the second judgment result for path A is "feasible".

[0177] The second branch connection sequence of path B is "Wind power generation node 1 → Circuit breaker 4 → Transmission line 4 → Interconnecting transformer 2 → Transmission line 5 → Commercial load node 1" (where interconnecting transformer 2 and transmission line 5 are cross-regional boundary branches), and the transmission direction is "Section 3 → Section 4"; the physical operation constraint of interconnecting transformer 2 is that it is only allowed to conduct from section 4 to section 3, which is opposite to the transmission direction of path B. Therefore, the second judgment result of path B is "not feasible".

[0178] Next, based on the second judgment result, interactive extension paths that are compatible with the operation constraints of cross-regional equipment can be selected to obtain the target extension path.

[0179] Optionally, all interactive extension paths can be screened one by one, with the screening criterion being that the second judgment result is "feasible". For interactive extension paths with the second judgment result of "feasible", it means that their conduction direction is compatible with the physical operation constraints of all cross-regional boundary branches in the path, and they have the basic conditions for safe cross-regional power conduction, and are thus determined as target extension paths.

[0180] For interactive extension paths whose second judgment result is "infeasible", it indicates that there is a conflict between the cross-regional boundary branch operation constraints and the transmission direction or the potential load exceeds the rated limit. If put into operation, it may cause cross-regional equipment overload or system stability problems. Therefore, they are eliminated and not listed as target extension paths.

[0181] During the screening process, it is necessary to simultaneously record the second branch connection sequence, conduction direction, and corresponding source partition, target partition, source power node, and target load node information for each target extension path.

[0182] In one implementation example, the second judgment result is retrieved: in the interactive extension path, the second judgment result of path A is "feasible", and path B is "infeasible".

[0183] Path A meets the criterion of "the second judgment result is feasible" and is identified as the target extension path. Recorded information includes the second branch connection sequence "thermal power generation node 1 → circuit breaker 1 → transmission line 1 → interconnecting transformer 1 → transmission line 3 → industrial load node 2", the transmission direction "zone 1 → zone 2", the source zone is zone 1, the target zone is zone 2, the source power node is thermal power generation node 1, and the target load node is industrial load node 2. Path B does not meet the criteria and is discarded. The final target path set includes the target interaction path (path 1) and the target extension path (path A).

[0184] In a specific operational method, the second branch connection sequence of a single interactive extension path can be obtained from the power grid topology data: all branch equipment and electrical node combinations arranged in the order of power transmission (with special marking of cross-regional boundary branches, such as cross-regional transmission lines, interconnecting transformers, etc.).

[0185] Define the transmission direction of this interactive extension path: that is, the direction of power transmission from the source-load associated zone to the target associated zone (e.g., "zone A → zone B"). Retrieve the physical operating constraints of all cross-zone boundary branches in this path: including core constraint parameters such as the allowed transmission direction (unidirectional / bidirectional), rated power limit, rated current limit, minimum / maximum operating temperature, etc.

[0186] 1. Match the directional compatibility of cross-regional boundary branches one by one. For each cross-regional boundary branch in the second branch connection sequence, determine individually whether the "propagation direction of the interactive extension path" is within the "allowed propagation direction" range of that branch.

[0187] Example: If a cross-regional boundary branch is a "one-way interconnection transformer" with the allowed direction being "zone B → zone A", while the direction of the interactive extension path is "zone A → zone B", then the branch direction is incompatible; if the branch allows bidirectional conduction, then the direction is compatible by default.

[0188] If there is a cross-regional boundary branch road with incompatible directions, a "direction conflict" marker is temporarily stored, and the path is subsequently determined to be infeasible.

[0189] 2. Estimate the conduction load and verify the parameter constraints. For directionally compatible cross-regional boundary branches, further verification is needed to determine whether the conducted load meets the parameter limitations: Estimate potential transmission load: Based on the maximum possible output of the power node at the starting point of the path and the maximum possible demand of the load node at the ending point, combined with the path loss coefficient, estimate the maximum transmission power / current that the cross-regional boundary branch needs to carry.

[0190] Compare the constraint parameters: determine whether the estimated maximum transmission power is less than or equal to the upper limit of the branch rated power, whether the estimated current is less than or equal to the upper limit of the rated current, and at the same time confirm whether the current equipment operating temperature is within the allowable range.

[0191] If the estimated load of any cross-regional boundary branch exceeds the parameter constraints, a "parameter exceeds limit" flag is temporarily stored.

[0192] 3. Comprehensive assessment of physical feasibility If all cross-regional boundary branches of the interactive extension path meet the requirements of "directional compatibility" and "load not exceeding limits", then the physical feasibility judgment result of cross-regional transmission is "feasible".

[0193] If any cross-regional boundary branch has "incompatible direction" or "overload limit", the judgment result is "not feasible".

[0194] After determining the target interaction path and the target interaction path, the rated operating parameters of the first electrical component of the target interaction path and the operating status parameters of the second electrical component of the target interaction path can be obtained.

[0195] The first electrical component refers to all electrical equipment (including branch equipment, associated equipment corresponding to electrical nodes, etc.) on the power grid energized path through which the target interaction path passes. The rated operating parameters refer to the upper and lower limits of the parameters allowed for the normal operation of the first electrical component (such as rated voltage, rated current, rated power, etc.).

[0196] The second electrical component refers to all electrical equipment (including cross-regional boundary branches and associated electrical node equipment) on the cross-regional conduction path involved in the target extension path crossing the partition boundary. The operating status parameters refer to the real-time parameters of the second electrical component (such as real-time voltage, real-time current, real-time power, etc.) and equipment health status information.

[0197] The rated operating parameters of the first electrical component on the power grid energization path traversed by each target interaction path, and the operating status parameters of the second electrical component on the cross-regional conduction path involved in crossing the partition boundary of each target extension path are used as constraints. Based on these constraints, constraint output combinations that meet the constraints are selected from several preset constraint output combinations. Then, by combining the constraint output combinations that meet the constraints, a source-load output collaborative feasible domain can be constructed.

[0198] The above operations can comprehensively consider the physical constraints of power transmission and conduction, ensuring that each power output combination within the feasible domain has the physical feasibility of actual operation, avoiding equipment operation conflicts and overload problems, and guaranteeing the safe and stable operation of the power system.

[0199] In one embodiment, constructing the source-load output collaborative feasible domain based on the rated operating parameters of the first electrical component of the target interaction path, the operating state parameters of the second electrical component of the target interaction path, and several preset constraint output combinations may include the following sub-steps: S1331. Calculate the maximum allowable power transmission parameters for each of the target interaction paths based on the rated operating parameters, and determine the maximum allowable cross-regional power conduction parameters for each of the target extension paths based on the operating status parameters.

[0200] S1332. Using the maximum allowable power transmission parameter and the preset source-load demand parameter, determine the power balance range between the output value of the power supply node and the demand value of the load node for each target interaction path, wherein the preset source-load demand parameter is the minimum output limit of the power supply node of the target interaction path and the minimum power demand limit of the load node of the target interaction path.

[0201] S1333. Construct output constraints using the power balance interval and the maximum allowable cross-regional power conduction parameter. Based on the output constraints, select several constrained output combinations from multiple preset multi-dimensional output combinations, and combine several constrained output combinations to obtain the source-load output collaborative feasible domain. The constrained output combination is a preset multi-dimensional output combination that satisfies the output constraints.

[0202] In one embodiment, the maximum permissible power transmission parameter for each target interaction path can be determined based on the rated operating parameters of the first electrical component, the maximum permissible power transmission parameter representing the maximum permissible power transmission capacity of each target interaction path.

[0203] Similarly, the maximum permissible cross-zone power conduction parameter for each target extension path can be determined based on the operating status parameters of the second electrical component. This maximum permissible cross-zone power conduction parameter represents the maximum permissible cross-zone power conduction capacity of each target extension path.

[0204] Optionally, for a single target interaction path, the rated operating parameters of all the first electrical components it contains are extracted, with a focus on selecting the rated power parameters and rated current parameters of each component (for components such as transmission lines that do not have direct rated power parameters, their rated power is calculated by combining the rated current parameters with the path's rated voltage parameters; the calculation method is: rated power = *Rated voltage*Rated current*Power factor, where the power factor is a typical value under normal grid operation, such as 0.9). Compare the rated power (directly extracted or calculated) of each first electrical component, and select the smallest rated power value as the maximum allowable power transmission parameter for the target interaction path. This is because the power transmission capacity of the target interaction path is limited by the weakest electrical component in the path, i.e., the component with the smallest rated power. If the transmitted power exceeds this value, it will cause the component to overload and be damaged. Repeat the above two steps for each target interaction path to determine its maximum allowable power transmission parameter one by one.

[0205] Furthermore, for a single target extension path, the operating status parameters of all its included second electrical components are extracted, with a focus on obtaining the real-time operating power, rated power, and equipment health status assessment results of each component. The second step is to calculate the remaining power conduction margin of each second electrical component. Optionally, the calculation method in this embodiment is: Remaining power conduction margin = Component rated power - Current real-time operating power. If the equipment health status assessment result is "sub-healthy" or "requires attention," the remaining power conduction margin is multiplied by a reduction factor of 0.8 (the reduction is based on the empirical value of the impact of equipment health status on load-bearing capacity; in a sub-healthy state, the equipment load-bearing capacity decreases by 20%). If the assessment result is "good," the remaining power conduction margin is not reduced. The third step is to compare the remaining power conduction margins of each second electrical component and select the smallest margin value as the maximum allowable cross-regional power conduction parameter for the target extension path. This is because the cross-regional conduction capacity of the target extension path is limited by the second electrical component with the smallest remaining load-bearing capacity in the cross-regional conduction path, avoiding component overload due to excessive conduction power. Repeat the above operation for each target extension path to determine its maximum permissible cross-regional power conduction parameters one by one.

[0206] In one implementation example, assume there are two target interaction paths (Path 1 and Path 2) and one target extension path (Path A). The first electrical components of Path 1 include Transmission Line 1, Circuit Breaker 1, and Transformer 1, with rated powers of 60 MW, 100 MW, and 50 MW, respectively. Comparing the rated powers of the three, the minimum rated power is 50 MW. Therefore, the maximum allowable power transmission parameter of Path 1 is determined to be 50 MW, and the limiting element is Transformer 1.

[0207] The first electrical components of path two include transmission line two and circuit breaker two, with no direct rated power parameters. Given that the rated voltage of path two is 110 kV, the rated current of transmission line two is 300 A, the rated current of circuit breaker two is 400 A, and the power factor is 0.9; calculate the rated power of transmission line two = *110 kV * 300 A * 0.9 ≈ 56.4 MW, Circuit Breaker II Rated Power = *110 kV * 400 A * 0.9 ≈ 75.2 MW; Comparing the rated power calculated from the two, the minimum is 56.4 MW. Therefore, the maximum allowable power transmission parameter for path two is determined to be 56.4 MW, and the limiting element is transmission line two.

[0208] The second electrical component of Path A includes the third inter-regional transmission line and the second interconnecting transformer. The rated power of the third transmission line is 80 MW, the current real-time operating power is 30 MW, and the health status is assessed as "good". The remaining power transmission margin is 80-30=50 MW. The rated power of the second interconnecting transformer is 60 MW, the current real-time operating power is 20 MW, and the health status is assessed as "sub-healthy". The remaining power transmission margin is (60-20)*0.8=32 MW. Comparing the remaining power transmission margins of the two, the minimum is 32 MW. Therefore, the maximum allowable inter-regional power transmission parameter of Path A is determined to be 32 MW, and the limiting component is the second interconnecting transformer.

[0209] In one embodiment, the power balance interval between the output value of the upper power node and the demand value of the load node for each target interaction path can be calculated based on the maximum allowable power transmission parameters of each target interaction path, the minimum output limit of the corresponding power node, and the minimum power demand limit of the load node. The power balance interval refers to the numerical range within a single target interaction path where the output value of the power node and the demand value of the corresponding load node satisfy power balance and comply with path transmission capacity constraints.

[0210] For a single target interaction path, the output value of the power node must be greater than or equal to the sum of the demand value of the corresponding load node and the power loss of the path (considering the loss during power transmission), while the output value of the power node cannot exceed the maximum allowable power transmission capacity of the path; the demand value of the load node must be greater than or equal to its minimum power demand lower limit, and the output value of the power node must be greater than or equal to its minimum output lower limit.

[0211] Path power loss refers to the power loss caused by the resistance and reactance of electrical components during the transmission of electrical energy along the target interaction path, and is determined using empirical estimation methods. It should be noted that the empirical estimation method here can be a standardized estimation scheme based on the operating rules of the power grid and the characteristics of equipment parameters. The core is to calculate path power loss through fixed rules and typical parameters, as explained in the following analysis: Core logic: Implementation method of standardized empirical estimation The core inputs for estimation are the maximum allowable power transmission parameters of the path, the path length, and the typical loss coefficients of electrical components (such as the resistance loss coefficient per kilometer of transmission lines and the no-load / load loss coefficient of transformers). These data are all derived from equipment factory parameters and power grid design specifications, and are not subjectively set by humans.

[0212] Fixed estimation formulas: Loss calculations follow standardized formulas. For example, the power loss of a transmission line = (transmission power² × path resistance) / (rated voltage²), where path resistance = loss coefficient per kilometer × path length; transformer loss = no-load loss + (transmission power / rated power)² × load loss. These formulas are fixed rules based on circuit principles, leaving no room for human discretion.

[0213] Simplified constraint boundaries: To reduce the computational complexity of the feasible region, this method takes the "maximum loss value under full load transmission" as the fixed loss value (rather than the real-time dynamic loss). This value selection rule is a preset standardized strategy, not a manual temporary decision. The estimation method is as follows: Based on the maximum allowable power transmission parameters of the path and the path length, combined with the typical loss coefficients of electrical components (such as the loss coefficient per kilometer of transmission lines and the transformer loss coefficient), the maximum loss value of the path under full load transmission is estimated. Then, the real-time loss is calculated according to the ratio of the actual transmission power to the full load power (in this step, to simplify the constraint boundaries, the maximum loss value is taken as the fixed loss value to participate in the interval calculation).

[0214] In one operating mode, the operation of generating the power balance interval for each target interaction path can be as follows: The lower limit of the load node demand value is determined as its minimum power demand lower limit, and the upper limit is the maximum allowable power transmission parameter of the path minus the maximum path loss value (because the load node demand value cannot exceed the maximum transmittable power of the power source node after deducting losses). The lower limit of the power source node output value is determined as the larger of the sum of the load node demand lower limit and the maximum path loss value, and the minimum power source node output lower limit (which must simultaneously meet the minimum output requirement of the power source node itself and the minimum demand plus loss requirement of the load node), and the upper limit is the maximum allowable power transmission parameter of the path. The value ranges of the power source node output value and the load node demand value are integrated to form a corresponding power balance interval. That is, any combination of power source node output value and load node demand value within this interval satisfies the constraints of "power source node output value ≥ load node demand value + path loss", "power source node output value ≤ maximum allowable power transmission parameter", "power source node output value ≥ minimum output lower limit", and "load node demand value ≥ minimum power demand lower limit".

[0215] In one implementation example, it is assumed that the maximum allowable power transmission parameter of the target interaction path one is 50 MW, the corresponding power source node is thermal power generation node one with a minimum output limit of 10 MW; the corresponding load node is industrial load node one with a minimum power demand limit of 8 MW; and the maximum path loss is estimated to be 2 MW.

[0216] The power balance range for Path 1 is determined as follows: The lower limit of the load node demand range is 8 MW, and the upper limit is 50 MW - 2 MW = 48 MW; the lower limit of the power generation node output range is max(8 MW + 2 MW, 10 MW) = max(10 MW, 10 MW) = 10 MW, and the upper limit is 50 MW. Therefore, the power balance range for Path 1 is: "Power generation node 1 output: 10-50 MW, industrial load node 1 demand: 8-48 MW, and the power generation node 1 output > industrial load node 1 demand + 2 MW".

[0217] The maximum allowable power transmission parameter for the other target interaction path two is 56.4 MW, corresponding to the power source node being hydropower node one with a minimum output limit of 5 MW; the corresponding load node is residential load node one with a minimum electricity demand limit of 5 MW; the maximum path loss is estimated to be 1.4 MW. Therefore, the power balance range for path two is: "output value of hydropower node one: max(5+1.4,5) = 6.4-56.4 MW, demand value of residential load node one: 5-55 MW (56.4-1.4), and the output value of hydropower node one > the demand value of residential load node one + 1.4 MW".

[0218] In one embodiment, after calculating the power balance interval and the maximum allowable cross-regional power conduction parameter, the power balance interval of each target interaction path can be used as the local output coordination constraint condition, and the maximum allowable cross-regional power conduction parameter of each target extension path can be used as the cross-regional output coupling constraint for constraint analysis, so as to obtain the feasible region of source-load output coordination.

[0219] Optionally, the power balance interval of each target interaction path is transformed into a quantitative constraint inequality, which clarifies the upper and lower limits and interrelationships between the output value of each power node and the corresponding demand value of the load node (e.g., the output value of the power node ≥ the demand value of the load node + path loss).

[0220] For each target extension path, considering the relationships between the corresponding source partition power nodes and target partition load nodes, the following cross-regional output coupling constraint inequality is constructed: If the target extension path connects the source partition power node X and the target partition load node Y, then the power value transmitted from power node X to load node Y through this path must be less than or equal to the maximum allowable cross-regional power transmission parameter of this path; simultaneously, this transmitted power value must be equal to the portion of power node X's output value allocated to cross-regional transmission, and cannot exceed the power node X's output limit, nor can it exceed the portion of load node Y's demand value from cross-regional transmission. Integrating all local output coordination constraint inequalities and cross-regional output coupling constraint inequalities yields a complete constraint system, ensuring that the constraint conditions are conflict-free and complete.

[0221] Furthermore, multiple sets of power node output values ​​and load node demand values ​​can be pre-defined to obtain multiple preset multi-dimensional output combinations. A multi-dimensional output combination space is then constructed using these multiple preset multi-dimensional output combinations, with each dimension corresponding to the output values ​​of all participating power nodes and the demand values ​​of all participating load nodes.

[0222] Next, an enumeration-based screening method can be used to verify each preset multi-dimensional output combination within the combination space (for scenarios with fewer dimensions), or a constraint-solving algorithm can be used to solve for the feasible region boundary (for scenarios with more dimensions). The constraint-solving algorithm is described as follows: using the inequalities in the constraint system as boundary conditions, first solve the subspace corresponding to a single constraint, and then obtain the set of preset multi-dimensional output combinations that satisfy all constraints by finding the intersection of all subspaces. Preset multi-dimensional output combinations that do not satisfy any constraints are eliminated, and combinations that satisfy all constraints are retained, thus obtaining the source-load output collaborative feasible region.

[0223] In one embodiment, the constraint system includes: local output coordination constraint (path 1: output value of thermal power generation node 1 P1∈[10,50] MW, demand value of industrial load node 1 L1∈[8,48] MW, P1≥L1+2; path 2: output value of hydropower generation node 1 P2∈[6.4,56.4] MW, demand value of residential load node 1 L2∈[5,55] MW, P2≥L2+1.4); cross-regional output coupling constraint (path A: power transmitted from thermal power generation node 1 to target zone industrial load node 2 through path A P12≤32 MW, and P12≤P1, P12≤L3 (demand value of industrial load node 2)).

[0224] Construct a power combination space with dimensions P1, L1, P2, L2, P12, and L3. Solve using a constraint-solving algorithm: first, obtain the subspaces corresponding to each local constraint (e.g., the subspaces of P1 and L1, P2 and L2) and the subspaces corresponding to cross-region constraints (e.g., the subspaces of P1, P12, and L3), then find the intersection of all subspaces. For example, if P1 is 30 MW, then L1 must be ≤28 MW (30-2) and ≥8 MW; P12 must be ≤30 MW and ≤32 MW, i.e., P12 ≤ 30 MW, and L3 must be ≥ P12. The selection process yields all combinations that conform to this relationship, such as (P1=30, L1=25, P2=20, L2=18, P12=20, L3=20) and (P1=40, L1=35, P2=30, L2=28, P12=32, L3=32), etc. The set of these combinations constitutes the source-load output cooperative feasible region.

[0225] It should be noted that setting multiple preset multi-dimensional output combinations can provide "simulated scenarios to be verified".

[0226] This step is to cover the various possibilities of grid operation by artificially setting multiple combinations of power output values ​​and load demand values ​​for power generation nodes.

[0227] These combinations serve as "input samples" for subsequent analysis, aiming to verify whether the power flow and transmission of the power grid conform to physical constraints under different output / load combinations.

[0228] When performing "physical constraint verification" on each combination based on the constraints, the power flow direction of the corresponding source load output interaction path and the transmission direction of the interaction extension path can be calculated for each set of preset multi-dimensional output combinations.

[0229] The calculated direction is then compared with the physical operation mode of the branch equipment and the physical constraints of the cross-regional boundary branch to obtain the first and second judgment results.

[0230] Simply put, setting a combination means "assuming a certain operating condition" and "determining whether the flow of electrical energy under this condition conforms to the physical rules of the equipment and the power grid".

[0231] The overall logical chain is as follows: The process involves setting multiple preset, multi-dimensional power output combinations, calculating the power flow / conduction direction for each combination, verifying the compliance of the directions, and selecting compliant combinations to form a collaborative feasible domain. The ultimate goal is to eliminate combinations that do not meet physical constraints and retain feasible operational schemes.

[0232] In this analysis, the power output value of a power node refers to the electrical power that the power node can output, and the load demand value refers to the electrical power that the load node needs to consume. For each preset multi-dimensional output combination, the power flow direction of the interaction path and extension path of each source and load under that combination is simulated and calculated. It is then determined whether the simulated power flow direction is consistent with the equipment operating mode, where the equipment operating mode refers to the power transmission direction specified in the power equipment design, such as the power transmission direction corresponding to the step-up or step-down operation of a transformer, or the designed transmission direction of a transmission line. Simultaneously, it is determined whether the operating parameters of each power device under this combination meet the equipment operating constraints, where the equipment operating constraints refer to the parameter range allowed for normal operation of the power equipment, including the rated voltage range, rated current range, and rated power range. If these ranges are exceeded, the equipment cannot operate normally. It should be noted that the output physical feasibility analysis combines both the power flow direction and the transmission direction, which correspond to the path constraints within and between zones, respectively, together constituting a complete physical feasibility verification. A detailed analysis follows: Core logic: Bidirectional constraint verification within and between partitions. The essence of power output physical feasibility analysis is to determine whether the combination of "power node output value - load node demand value" can make all paths (within the zone + between zones) meet the physical operation rules. The power flow direction corresponds to the path constraints within the zone, and the transmission direction corresponds to the path constraints between zones. Both are indispensable.

[0233] Intra-partition path: Constraint verification based on power flow direction For each source-load output interaction path (path within a partition), its power flow direction is matched with the physical operation mode of the branch equipment on the path.

[0234] For example, if the design transmission direction of a unidirectional transmission line is "power source side → load side", and the power flow direction of the path is opposite to the design direction, then the power output combination does not conform to physical rules and will be eliminated.

[0235] Interval path: Constraint verification based on transmission direction For each interactive extension path (inter-regional path), a compatibility judgment is made based on its propagation direction and the physical operation constraints of the cross-regional boundary branch.

[0236] For example, the constraint of an inter-regional interconnection transformer is "only zone A → zone B conduction is allowed". If the conduction direction of the path is "zone B → zone A", then the power output combination does not conform to the physical rules and will be eliminated.

[0237] Comprehensive screening: forming feasible regions Only output combinations that simultaneously satisfy the conditions that "the power flow direction of all interaction paths within a partition is consistent with the device mode" and "the transmission direction of all extended paths between partitions is compatible with cross-region constraints" will be included in the source-load output coordination feasible domain.

[0238] Simply put, the power flow direction tube determines whether a path can be traveled within a given zone, and the conduction direction tube determines whether a path can be passed between zones. Only when both conditions are met is it physically feasible.

[0239] For example Suppose a certain output combination corresponds to: The power flow direction of path 1 within the partition is "thermal power generation node → industrial load node", which is consistent with the design direction of the unidirectional transmission line on the path (complies with the constraints). The transmission direction of the inter-regional extension path A is "region 1 → region 2", which is compatible with the constraint that "only region 1 → region 2 is allowed" of the inter-regional interconnection transformer (meets the constraint). The combination then passes the physical feasibility check and enters the feasible region.

[0240] If the transmission direction of the extended path B corresponding to another combination is "Partition 2 → Partition 1", which conflicts with the tie transformer constraint (does not comply), then even if the power flow direction of the paths within the partition is compliant, this combination will be eliminated. Furthermore, by summarizing all the preset multi-dimensional output combinations that satisfy the above consistency and constraint conditions, the feasible domain for source-load output coordination is obtained.

[0241] The feasible domain for source-load output coordination is a set of preset multi-dimensional output combinations of all power node output values ​​and load node demand values ​​under the current operating state. Each preset multi-dimensional output combination satisfies that the power flow direction of each source-load output interaction path in the power grid is consistent with the equipment operating mode and meets the equipment operating constraints, as described in the steps above.

[0242] The embodiments of the present invention comprehensively consider single-path local security constraints and cross-regional coupling constraints, ensuring that each power output combination within the feasible domain is physically feasible and operates safely, matching power output combinations that meet scheduling objectives, avoiding equipment overload and power imbalance, and ensuring the safe and stable operation of the power system.

[0243] S14. Select target output coordination combinations from the feasible domain of source-load output coordination based on preset scheduling conditions, and perform source-load output scheduling processing according to the target output coordination combinations. The preset scheduling conditions include: scheduling target constraints, directional conflict constraints, and overload constraints.

[0244] Next, a target output coordination combination can be selected from the feasible domain of source-load output coordination based on preset scheduling conditions, and source-load output scheduling processing can be performed according to the target output coordination combination.

[0245] Optionally, preset scheduling conditions can be set in advance, including: scheduling target constraints, directional conflict constraints, and overload constraints. Among them, scheduling target constraints refer to the grid scheduling operation requirements, including reducing power supply losses, ensuring power supply reliability, and balancing grid power flow distribution. Based on the scheduling target constraints and the feasible domain of source-load output coordination, a coordinated scheduling matching analysis is performed to obtain the source-load output coordinated scheduling strategy.

[0246] Among them, the target output coordination combination is a set of power node output values ​​and load node demand values ​​selected from the source-load output coordination feasible domain. It can be represented as a source-load output coordination scheduling strategy. Subsequently, output scheduling can be carried out according to the target output coordination combination so that all activated source-load output interaction paths are physically free from circulation conflicts and the equipment is not overloaded.

[0247] In one embodiment, the step of selecting target output coordination combinations from the feasible region of source-load output coordination based on preset scheduling conditions, and performing source-load output scheduling processing according to the target output coordination combinations, may include the following sub-steps: S141. Using a preset scheduling target as a scheduling task constraint, select several candidate power output coordination combinations from the feasible domain of source-load power output coordination, and determine the target source-load power output interaction path activated under each candidate power output coordination combination.

[0248] S142. Select several output coordination combinations to be analyzed from several candidate output coordination combinations, wherein the output coordination combinations to be analyzed are candidate output coordination combinations that satisfy the directional conflict constraint in the target source load output interaction path, wherein the directional conflict constraint is that there is no opposite power flow direction.

[0249] S143. Determine a target output coordination combination that satisfies the preset scheduling target constraints and overload constraints from several output coordination combinations to be analyzed, and perform source load output scheduling processing according to the target output coordination combination.

[0250] In one embodiment, the feasible domain for source-load output coordination includes several constrained output combinations. The current scheduling target can be used as a scheduling task constraint to filter several constrained output combinations in the feasible domain for source-load output coordination to obtain candidate output coordination combinations. Based on the power node output value and load node demand value corresponding to each candidate output coordination combination, the target source-load output interaction path activated under each candidate output coordination combination is determined.

[0251] Optionally, scheduling task constraints refer to quantitative constraints set based on the current scheduling objectives (such as the upper limit of power generation cost corresponding to economic operation objectives, the upper limit of carbon emission intensity corresponding to environmental protection objectives, etc.).

[0252] In an optional operating mode, each power output coordination combination in the feasible domain of source-load power output coordination can be matched and verified against scheduling task constraints. The verification method in this embodiment of the invention is as follows: for each power output coordination combination, calculate its corresponding scheduling target quantitative index (such as calculating the total power generation cost based on the output value of each power node, calculating carbon emission intensity based on the proportion of clean energy power output, etc.), and determine whether the quantitative index meets the requirements of the scheduling task constraints. If the scheduling task constraints are met, the power output coordination combination is determined as a candidate power output coordination combination; otherwise, it is eliminated.

[0253] Furthermore, if the power output value of the power node corresponding to a certain source-load output interaction path is greater than its minimum output limit and the demand value of the corresponding load node is greater than its minimum electricity demand limit, and the power transmission direction of the path is consistent with the direction from the power node output value to the load node demand value, then the source-load output interaction path is determined to be activated, which is the target source-load output interaction path. For each candidate output coordination combination, the activation determination of all source-load output interaction paths is performed one by one, and the activated paths are summarized to obtain the set of target source-load output interaction paths corresponding to the combination.

[0254] In one implementation example, assume the current scheduling objective is an economic operation objective, and the scheduling task constraint is "total power generation cost ≤ 100,000 yuan / hour"; the feasible domain for source-load output coordination includes three output coordination combinations (Combination 1, Combination 2, and Combination 3). The quantitative indicators (total power generation cost) of the scheduling objective corresponding to each combination are: Combination 1 80,000 yuan / hour, Combination 2 110,000 yuan / hour, and Combination 3 95,000 yuan / hour.

[0255] Screening and verification: The total power generation cost of combination one and combination three both meet the constraint of "≤100,000 yuan / hour" and are determined as candidate power output coordination combinations; combination two does not meet the constraint and is eliminated.

[0256] For candidate combination 1 (thermal power generation node 1 output value 30 MW, industrial load node 1 demand value 25 MW; hydropower generation node 1 output value 20 MW, residential load node 1 demand value 18 MW), activation determination: the power node output value of the corresponding power generation node 30 MW is greater than the minimum output limit of 10 MW, the load node demand value of 25 MW is greater than the minimum electricity demand limit of 8 MW, and the transmission direction is consistent, so it is determined to be activated; Path 2 (Hydropower node 1 → Residential load node 1) has a power output of 20 MW, which is greater than the minimum output limit of 5 MW. The load node demand is 18 MW, which is greater than the minimum power demand limit of 5 MW. The transmission directions are consistent, so it is determined to be activated. If the output value of the power node corresponding to other paths is the minimum output limit or the demand value of the load node is the minimum power demand limit, it is determined that it has not been activated.

[0257] Therefore, the set of target source load output interaction paths corresponding to Combination 1 is {Path 1, Path 2}.

[0258] For the branch sequence of the target source-load output interaction path that passes through the shared branch in the power grid topology, the power flow direction carried by each candidate output coordination combination is used to determine whether there are at least two source-load output interaction paths that generate opposite power flow directions on the same shared branch, and the power flow judgment result is obtained.

[0259] Optionally, a shared branch refers to the same branch equipment that is shared by two or more target source load output interaction paths in the power grid topology. A branch sequence refers to the connection combination of all branch equipment and electrical nodes arranged in the order of power transmission in the path.

[0260] For each candidate power output coordination combination, the branch sequences of each path in the target source-load output interaction path set are analyzed: all branch devices included in each path are extracted to form a branch list. By comparing the branch lists of different paths, the branch devices commonly included are selected, which are then identified as the shared branches corresponding to that candidate combination. During the analysis process, the position and connection relationship of each shared branch in the branch sequence of each path must be clearly defined.

[0261] Furthermore, for each shared branch, it is determined whether there are at least two different paths on the shared branch that generate opposite power flow directions: if there are two or more paths with opposite power flow directions on the shared branch, then the shared branch is determined to have a power flow conflict; if all paths containing the shared branch have the same power flow direction, then there is no power flow conflict. If all shared branches corresponding to the candidate combination have no power flow conflict, then the power flow judgment result is "no opposite power flow direction"; if any shared branch has a power flow conflict, then the power flow judgment result is "opposite power flow direction exists".

[0262] In one implementation example, assume that the set of target source-load output interaction paths corresponding to candidate combination one is {path one, path two}. Retrieve the power grid topology data and analyze the branch sequences: the branch sequence for path one is "circuit breaker one → transmission line one → bus one → circuit breaker two"; the branch sequence for path two is "disconnecting switch one → transmission line two → bus one → circuit breaker three". Comparing the branch list, it is found that both paths pass through the associated branch corresponding to "bus one" (bus one branch), thus determining that bus one branch is a shared branch.

[0263] The power flow direction of Path 1 on a branch of the busbar is "Transmission Line 1 → Busbar 1 → Circuit Breaker 2"; the power flow direction of Path 2 on a branch of the busbar is "Transmission Line 2 → Busbar 1 → Circuit Breaker 3". Both paths point towards Busbar 1, and then from Busbar 1 towards different load sides, showing a consistent direction. Therefore, there is no power flow conflict. Thus, the power flow judgment result for candidate combination 1 is "no opposite power flow direction".

[0264] If the target source load output interaction path set corresponding to another candidate combination three is {path one, path three}, and the branch sequence of path three is "wind power generation node one → circuit breaker four → bus one → circuit breaker two", its power flow direction in the bus branch is "bus one → transmission line one", which is opposite to the power flow direction of path one in the bus branch. Therefore, it is determined that there is a power flow conflict, and the power flow judgment result of combination three is "there is an opposite power flow direction".

[0265] Next, candidate power output coordination combinations with opposite power flow directions can be eliminated, while those without opposite power flow directions can be retained. This allows for the selection of several power output coordination combinations to be analyzed from among the candidate combinations. Based on the electrical components along all power grid energized paths of the source-load power output interaction paths activated by each power output coordination combination to be analyzed, it is determined whether the power flow direction and magnitude under the power output coordination combination exceed the rated operating limit, thus obtaining the operating judgment result.

[0266] In one optional operating mode, for each candidate power output coordination combination to be verified, the transmission power of each target source-load power interaction path is calculated based on the power output value of the corresponding power node and the load node demand value. The calculation method in this embodiment of the invention is as follows: path transmission power = corresponding power node output value - path power loss (the path power loss adopts the maximum loss value estimated in step 3032); then, based on the transmission power and the path rated voltage, the power flow of each electrical component is calculated (e.g., the current flowing through the transmission line = transmission power / (√3 * rated voltage * power factor), with the power factor taken as 0.9), and the power flow direction is determined (consistent with the path power flow direction). The power flow of each electrical component is verified one by one to determine whether it exceeds the corresponding rated operating limit: if the power flow of all electrical components does not exceed the rated operating limit, the operation judgment result is "meets the operation requirements"; if the power flow of any electrical component exceeds the rated operating limit, the operation judgment result is "does not meet the operation requirements".

[0267] Furthermore, candidate power output coordination combinations that meet the operational requirements are identified as power output coordination combinations to be analyzed; candidate power output coordination combinations that do not meet the operational requirements are eliminated.

[0268] In one implementation example, assume that the candidate power output coordination combination with a power flow judgment result of "no opposite power flow direction" is Combination 1. Retrieve the list of electrical components traversed by Path 1 and Path 2, which are activated by Combination 1: Path 1 includes Circuit Breaker 1, Transmission Line 1, Busbar 1, and Circuit Breaker 2; Path 2 includes Disconnect Switch 1, Transmission Line 2, Busbar 1, and Circuit Breaker 3. The rated operating limits for each electrical component are: Transmission Line 1 rated current limit 400 A, Circuit Breaker 1 rated current limit 400 A; Transmission Line 2 rated current limit 300 A, Disconnect Switch 1 rated current limit 300 A; Busbar 1 rated current limit 600 A; Circuit Breaker 2 rated current limit 400 A, Circuit Breaker 3 rated current limit 300 A.

[0269] Calculate the power flow: Path 1 transmission power = 30 MW - 2 MW = 28 MW, rated voltage 110 kV, current flow = 28 MW / (√3 * 110 kV * 0.9) ≈ 168 A; Path 2 transmission power = 20 MW - 1.4 MW = 18.6 MW, current flow = 18.6 MW / (√3 * 110 kV * 0.9) ≈ 112 A; Total current flow through busbar 1 = 168 A + 112 A = 280 A.

[0270] The current flowing through all electrical components did not exceed the rated operating limit (168A < 400A, 112A < 300A, 280A < 600A, etc.), and the operation judgment result was "meets the operation requirements". Therefore, combination one was determined to be the output coordination combination to be analyzed.

[0271] If the transmission power of path one of the other combination to be verified is 55 MW, the calculated current flowing through it is 55 MW / (√3 * 110 kV * 0.9) ≈ 330 A. However, the rated current limit of transmission line one is 300 A. Since 330 A > 300 A, the operation judgment result is "does not meet the operation requirements" and it is eliminated.

[0272] Next, from several output coordination combinations to be analyzed, the target output coordination combination that satisfies the preset scheduling target constraints and overload constraints is determined, and the source load output scheduling is performed according to the target output coordination combination.

[0273] By adopting the above operations, scheduling target constraints, power flow constraints, and equipment operation constraints can be fully integrated, ensuring that the final source-load output coordinated scheduling strategy not only meets scheduling requirements but also has strong feasibility and security. Therefore, executing scheduling operations with the same scheduling strategy can achieve precise matching between power output and load demand, avoid equipment overload and power flow conflicts, and ensure the safe and stable operation of the power system.

[0274] In one embodiment, determining the target output coordination combination that satisfies the preset scheduling target constraints and overload constraints from a plurality of the output coordination combinations to be analyzed, and performing source load output scheduling processing based on the target output coordination combination, may include the following sub-steps: S1431. Select several overload output coordination combinations from several output coordination combinations to be analyzed, wherein the overload output coordination combination is an output coordination combination to be analyzed in which the power parameters of each electrical component are less than the rated operating limit.

[0275] S1432. Select several constrained output coordination combinations from several overload output coordination combinations, wherein the constrained output coordination combination is an overload output coordination combination whose power transmission value is less than the maximum allowable cross-regional power transmission parameter and satisfies the preset scheduling operation constraints.

[0276] S1433. Calculate the priority score value of each of the constrained output coordination combinations based on the preset priority weight, determine the target output coordination combination from several constrained output coordination combinations according to the priority score value, and perform source load output scheduling processing according to the target output coordination combination.

[0277] Based on the operational judgment results, the output coordination combinations that cause overload of any electrical component can be eliminated to obtain overload output coordination combinations. Then, based on the electrical components on the cross-regional conduction path corresponding to the interactive extension path involved in each overload output coordination combination, it is determined whether the power conduction value under the overload output coordination combination exceeds the maximum allowable cross-regional power conduction parameter, thus obtaining the power conduction judgment result.

[0278] Optionally, electrical component overload refers to the power flow through an electrical component exceeding its rated operating limit, which may lead to equipment damage or malfunction. Cross-zone conduction path refers to the power conduction segment in an interactive extension path that crosses the boundary of the source-load associated zone, consisting of cross-zone boundary branches and associated electrical node equipment.

[0279] Optionally, for each power output coordination combination to be analyzed, if the operation judgment result is "meets operating requirements," it means that the power flow of all electrical components on the activation path of the combination does not exceed the rated operating limit, and there is no overload of electrical components. In this case, the power output coordination combination to be analyzed is identified as an overload power output coordination combination. If the operation judgment result is "does not meet operating requirements," it means that at least one electrical component is overloaded and is therefore eliminated. During the screening process, the power flow data of the electrical components corresponding to each overload power output coordination combination and the satisfaction of operating constraints must be recorded simultaneously.

[0280] Furthermore, for each overload output coordination combination, based on the power output value of the corresponding power node and the load node demand value, the power transmission value of each interactive extension path is calculated. The calculation method is as follows: Power transmission value = the portion of the power output value of the source partition power node corresponding to the path allocated to cross-regional transmission - power loss of the cross-regional transmission path (the power loss of the cross-regional transmission path is determined using the same empirical estimation method as in step 3032, and the maximum loss value is taken as the fixed loss value for calculation). The power transmission value of each interactive extension path is compared with the corresponding maximum permissible cross-regional power transmission parameter: if the power transmission value ≤ the maximum permissible cross-regional power transmission parameter, the power transmission of the interactive extension path is determined to meet the requirements; if all involved interactive extension paths meet the requirements, the power transmission judgment result of the overload output coordination combination is "compliant"; if there is any interactive extension path with a power transmission value > the maximum permissible cross-regional power transmission parameter, the power transmission judgment result is "non-compliant".

[0281] In one implementation example, assume there are three power output coordination combinations to be analyzed (Combination 1, Combination 2, and Combination 3), and their operation judgment results are as follows: Combination 1 "meets operating requirements", Combination 2 "does not meet operating requirements" (transmission line 1 is overloaded), and Combination 3 "meets operating requirements". Therefore, the overload power output coordination combinations are selected as Combination 1 and Combination 3, and Combination 2 is eliminated.

[0282] The interactive extension path involved in Combination 1 is Path A (corresponding to target extension path A, with a maximum allowable cross-regional power transmission parameter of 32 MW); based on the power output value of the power node in Combination 1 (30 MW output of thermal power node 1) and the load node demand value (20 MW demand of industrial load node 2), the power transmission value of Path A is calculated as 20 MW - 1 MW (maximum loss value of cross-regional transmission path) = 19 MW.

[0283] The comparison shows that 19 MW < 32 MW, and the power conduction of path A meets the requirements. Therefore, the power conduction judgment result of combination one is "compliant".

[0284] The interaction extension path involved in Combination 3 is still path A; Based on the power output of the power nodes in Combination 3 (40 MW for thermal power node 1) and the load demand (35 MW for industrial load node 2), the power transmission value of path A is calculated as 35 MW - 1 MW = 34 MW. A comparison shows that 34 MW > 32 MW, therefore the power transmission of path A does not meet the requirements. Thus, the power transmission judgment result for Combination 3 is "not compliant".

[0285] After screening based on power output, several constrained output coordination combinations are selected from a number of overload output coordination combinations. Specifically, overload output coordination combinations that exceed the maximum allowable cross-regional power transmission parameter can be eliminated based on the power transmission judgment results, thus obtaining constrained output coordination combinations.

[0286] Optionally, for each overload output coordination combination, the screening criterion is that the power conduction judgment result is "compliant," meaning that the power conduction values ​​of all interactive extension paths involved in the combination do not exceed the corresponding maximum allowable cross-zone power conduction parameters, ensuring the safe operation of electrical components on the cross-zone conduction path. If the power conduction judgment result of the overload output coordination combination is "compliant," it is determined as a constrained output coordination combination; if it is "non-compliant," it indicates that the cross-zone conduction power exceeds the equipment's carrying capacity, which may lead to cross-zone equipment failure or system stability problems, and it is eliminated.

[0287] In one implementation example, assume the overload output coordination combinations are Combination 1 and Combination 3, with power conduction judgment results of "compliant" for Combination 1 and "non-compliant" for Combination 3. Combination 1 meets the requirement of "power conduction judgment result compliant" and is therefore identified as the constrained output coordination combination; Combination 3 does not meet the standard and is eliminated. The final constrained output coordination combination is Combination 1.

[0288] Finally, the target output coordination combination can be obtained by filtering the constraint output coordination combination based on the scheduling operation constraints of the power nodes or load nodes according to the current scheduling target.

[0289] Optionally, dispatching operation constraints refer to the operational restrictions set on power supply nodes or load nodes based on the current dispatching objectives, including but not limited to the output regulation rate constraints of power supply nodes (e.g., the maximum output regulation per hour of thermal power generation nodes ≤ 10 MW), the output ratio constraints of clean energy sources (e.g., the output of clean energy such as wind power and photovoltaic power accounts for ≥ 30% of the total output), and the electricity consumption priority constraints of load nodes (e.g., priority is given to ensuring the electricity demand of residential load nodes, and the adjustable load ratio of industrial load nodes is ≤ 20%).

[0290] Optionally, each constrained output coordination combination is matched and verified against the scheduling operation constraints one by one. The verification method in this embodiment of the invention is as follows: For each constrained output coordination combination, the corresponding power node output value and load node demand value are extracted, and the quantitative indicators corresponding to the scheduling operation constraints (such as power node output adjustment rate, clean energy output ratio, industrial adjustable load ratio, etc.) are calculated. It is then determined whether the quantitative indicators meet the requirements of the scheduling operation constraints. If all scheduling operation constraints are met, the constrained output coordination combination is determined as the target output coordination combination; if no scheduling operation constraint is met, it is eliminated.

[0291] In one implementation example, assuming the current scheduling objective is a composite objective of "safety + environmental protection", the corresponding scheduling operation constraints are "clean energy output accounts for ≥30% of the total output" and "the hourly output adjustment of thermal power generation nodes is ≤10 MW"; the constraint output coordination combination obtained by sub-step 4042 is combination one and combination four (the newly added combination four is a supplementary example).

[0292] The quantitative indicators corresponding to Combination 1 are as follows: Total output = 30 MW of thermal power generation node 1 + 20 MW of hydropower generation node 1 = 50 MW, and the output ratio of clean energy (hydropower) = 20 ÷ 50 × 100% = 40% ≥ 30%; the output adjustment of thermal power generation node 1 = 30 MW - initial output 25 MW = 5 MW ≤ 10 MW, which meets all scheduling and operation constraints and is determined as the target output coordinated combination.

[0293] The quantitative indicators for Combination 4 are: Total output = 45 MW of thermal power generation node 1 + 5 MW of wind power generation node 1 = 50 MW. The output ratio of clean energy (wind power) = 5 ÷ 50 × 100% = 10% < 30%, which does not meet the scheduling and operation constraints and is therefore excluded. The final target output coordination combination is Combination 1.

[0294] Finally, based on the power output value of the power node and the demand value of the load node in the target output coordination combination, the source-load output coordination scheduling strategy can be determined, and then the power output of the grid equipment can be adjusted according to the source-load output coordination scheduling strategy.

[0295] Optionally, if the target output coordination combination set contains only one combination, it is directly used as the optimal output coordination combination; if it contains multiple combinations, a comprehensive scoring system is constructed based on the priority weights of the current scheduling targets (e.g., economic target weight 0.5, environmental protection target weight 0.3, safety target weight 0.2), and a comprehensive score is given to each combination (the weighted sum of the normalized quantitative indicators of each scheduling target and their weights). The combination with the highest comprehensive score is selected as the optimal output coordination combination. Based on the output value of the power nodes corresponding to the optimal output coordination combination, specific output instructions for each power node are generated, specifying the output size and output adjustment rate (if there is an adjustment requirement) of each power node; based on the corresponding load node demand value, a power demand matching scheme for each load node is generated, specifying the power supply guarantee priority and the adjustment range of adjustable loads (if any). Combining the source-load output interaction path and interaction extension path activated by the optimal combination, the operating status of each path is specified (e.g., conduction status, power transmission / conduction magnitude and direction), and corresponding on / off instructions are issued to key electrical components (e.g., circuit breakers, disconnect switches) on the path.

[0296] In one embodiment, the target output coordination combination only includes combination one (thermal power generation node one output 30 MW, hydropower generation node one output 20 MW; industrial load node one demand 25 MW, residential load node one demand 18 MW, industrial load node two demand 20 MW), and the activated paths are path one, path two, and path A.

[0297] Combination 1 is the unique optimal output coordination combination. It generates the following power node output instructions: "Thermal Power Generation Node 1: Maintain output at 30 MW, output adjustment rate ≤ 10 MW / hour" and "Hydropower Generation Node 1: Maintain output at 20 MW". It also generates the following load node electricity demand matching schemes: "Residential Load Node 1: Prioritize 18 MW of electricity demand, no adjustment load" and "Industrial Load Node 1: Guarantee 25 MW of electricity demand, adjustable load ratio ≤ 5%" and "Industrial Load Node 2: Guarantee 20 MW of electricity demand, adjustable load ratio ≤ 10%". The operational status of the power paths and the instructions for each component are clearly defined: "Path 1 (Thermal Power Generation Node 1 → Industrial Load Node 1): Keep on, transmission power 28 MW"; "Path 2 (Hydropower Generation Node 1 → Residential Load Node 1): Keep on, transmission power 18.6 MW"; "Path A (Thermal Power Generation Node 1 → Industrial Load Node 2): Keep on, conduction power 19 MW"; "Keep closed" instructions are issued to Circuit Breaker 1, Circuit Breaker 2, Disconnect Switch 1, and Interconnecting Transformer 1 on the paths. Integrating the above information yields the final source-load output coordinated scheduling strategy.

[0298] By employing the above-mentioned operational methods, equipment operation constraints, cross-regional transmission constraints, and scheduling target constraints can be fully integrated to ensure the safety, feasibility, and relevance of the final scheduling strategy. Therefore, by executing scheduling operations through the scheduling strategy, precise matching between power output and load demand can be achieved, avoiding equipment overload and cross-regional transmission imbalance, effectively coordinating the operating status of each source and load node, and ensuring the safe and stable operation of the power system.

[0299] The technical solution provided in this invention can accurately capture the coupling characteristics between multiple sources and loads within a single zone by analyzing the power supply path based on the corresponding relationship between power nodes and load nodes in each source-load associated zone. This avoids the limitations of simply considering the correspondence between a single power source and a single load. The interaction extension path obtained by combining the interaction path with the interaction boundary between each source-load associated zone clarifies the cross-influence paths between zones, avoiding the problem of not being able to identify the influence paths between regions. The source-load output collaborative feasible region obtained by analyzing the power output physical feasibility based on the power flow direction of the source-load output interaction path and the transmission direction of the interaction extension path, and the source-load output collaborative scheduling strategy obtained by combining the current scheduling target with the source-load output collaborative feasible region, can achieve globally coordinated source-load output collaborative control, accurately analyze the collaborative output of multiple sources and loads, and ensure the safe and stable operation of the power system.

[0300] In this embodiment, the present invention provides a source-load output scheduling method based on node power supply circuits. Its advantages are as follows: the present invention can obtain port information of each power node and load node within each source-load associated partition, and construct source-load output interaction paths using the port information; determine the connection relationship between the terminal primary equipment of the source-load output interaction path and the adjacent source-load associated partition, and construct an interaction extension path based on the connection relationship; filter target interaction paths that satisfy a preset power flow direction from the source-load output interaction paths and target extension paths that satisfy a preset conduction direction from the interaction extension paths, and construct a source-load output collaborative feasible domain based on the operating parameters of the target interaction paths and target extension paths and several preset constraint output combinations; filter target output collaborative combinations from the source-load output collaborative feasible domain based on preset scheduling conditions, and perform source-load output scheduling processing based on the target output collaborative combinations. This invention can determine the power output interaction path by combining the port information of multiple power nodes and multiple load nodes in a power source region, and determine the connection relationship of each power source region based on the power output interaction path. Then, based on the connection relationship of each power source region and preset constraints, it can select the power output combination that meets the requirements from the preset power output combination for power output scheduling. This not only fits the actual connection structure and actual power output requirements of the power grid, improving the accuracy of scheduling, but also avoids deviations caused by fluctuations in adjacent power source regions, thus improving the stability of power grid operation.

[0301] This invention also provides a source-load output scheduling device based on node power supply circuits, see [link to relevant documentation]. Figure 2 The diagram shows a schematic of the structure of a source-load output scheduling device based on a node power supply circuit according to an embodiment of the present invention.

[0302] As an example, the source-load output scheduling device based on node power supply circuits may include: The acquisition module 201 is used to acquire node port information in each source-load associated partition and construct a source-load output interaction path using the node port information. The node port information is the output port information of the power node and the input port information of the load node in the source-load associated partition. The source-load output interaction path is the electrical path on which the power node supplies power to the load node. The relationship construction module 202 is used to determine the connection relationship between the terminal primary device of the source-load output interaction path and the adjacent source-load associated partition, and construct the interaction extension path according to the connection relationship. The interaction extension path is a transmission path in which the power node in a source-load associated partition has an output influence on the load node in the remaining connected source-load associated partition through the physical connection of the power grid. The feasible domain construction module 203 is used to filter target interaction paths that satisfy a preset power flow direction from the source load output interaction paths and target extension paths that satisfy a preset conduction direction from the interaction extension paths, and to construct a source load output collaborative feasible domain based on the operating parameters of the target interaction paths and the target extension paths and several preset constraint output combinations. The power flow direction is the path direction in which nodes within the source load output interaction paths are connected, and the conduction direction is the path direction in which the source load associated partitions within the interaction extension paths are connected. The output scheduling module 204 is used to select target output coordination combinations from the source-load output coordination feasible domain based on preset scheduling conditions, and to perform source-load output scheduling processing according to the target output coordination combinations. The preset scheduling conditions include: scheduling target constraints, directional conflict constraints, and overload constraints.

[0303] Optionally, obtaining the node port information within each source-load associated partition and constructing the source-load output interaction path using the node port information includes: Obtain the output port information of the power node and the input port information of the load node in each source-load associated partition, and determine the port connection status between the power node and the load node based on the input port information and the output port information; Based on the port connection status, several pairs of power load nodes are selected, and a local power supply path is constructed using the primary equipment sequence corresponding to the power load node pairs. The power load node pairs are power nodes and load nodes that provide electrical connection for primary equipment, and the primary equipment sequence is a sequence of all primary equipment arranged in the order in which electrical energy is transmitted from the power node to the load node. Several load nodes to be traced are selected from each source-load associated partition, and reverse path tracing is performed using several load nodes to be traced to obtain the target source-load power supply path. The load nodes to be traced are load nodes of non-power load node pairs. The local power supply path and the target source load power supply path are merged to obtain the source load output interaction path.

[0304] Optionally, the step of selecting several load nodes to be traced from each source-load associated partition, and using several load nodes to be traced to perform reverse path tracing to obtain the target source-load power supply path, includes: In each source-load association partition, several load nodes to be traced are selected, and the target electrical node is obtained by reverse path tracing of each load node to be traced. The target electrical node is the bus node or branch node connected to the second end of the primary equipment of the previous level connected to the load node to be traced. Starting from the target electrical node, the connected primary equipment is traced in reverse along the upstream power direction to obtain the reverse traced equipment link, wherein the reverse traced equipment link is the connection path of the target electrical node to the connected primary equipment in the upstream power direction. The power nodes and electrical nodes of the reverse tracing device link are reconstructed based on a preset reconstruction direction to obtain an initial source-load power supply path, wherein the preset reconstruction direction is the direction of power transmission from the power source to the load. Selecting a target source load power supply path from several initial source load power supply paths, wherein the target source load power supply path is a path in which the real-time operating status information of the primary equipment of the initial source load power supply path meets the preset energy transmission continuity condition.

[0305] Optionally, determining the connection relationship between the end primary device of the source-load output interaction path and the adjacent source-load associated partition, and constructing an interaction extension path based on the connection relationship, includes: Multiple end primary devices are determined from each of the source-load output interaction paths, wherein the end primary device is a primary device in the source-load output interaction path whose distance from the load node meets a preset distance condition or is located at the boundary of the source-load associated partition; Several initial interaction boundary devices are selected from the multiple end primary devices, wherein the initial interaction boundary devices are end primary devices that are connected across adjacent source-load associated partitions and have an electrical connection relationship with the electrical network of adjacent source-load associated partitions; Select a target interactive boundary device from a plurality of initial interactive boundary devices, wherein the target interactive boundary device is an initial interactive boundary device with power output capability; An interactive extension path is constructed based on the functional attribute type of the first electrical node connected to the target interactive boundary device in the adjacent source-load association partition, wherein the functional attribute type refers to the power grid functional attribute implemented by the electrical node in the power grid.

[0306] Optionally, constructing the interaction extension path based on the functional attribute type of the first electrical node connected to the target interaction boundary device in the adjacent source-load association partition includes: Obtain the first electrical node connected to the target interactive boundary device in the adjacent source-load association partition, and determine the starting point of the extension path based on the first electrical node, wherein the starting point of the extension path is the location point of the downstream primary device in one or more downstream power supply branches connected to the first electrical node in the downstream load direction; Based on the functional attribute type of the first electrical node, the next level electrical node is traversed and connected step by step along the direction of power flow, starting from the starting point of the extension path, to obtain the forward extension path. The forward extension path and the conductive power supply path corresponding to the target interactive boundary device are merged to obtain the interactive extension path. The conductive power supply path is the source-load output interactive path where the target interactive boundary device is located when the power nodes in the source-load output interactive path corresponding to the target interactive boundary device are in normal operating condition and all primary devices in the source-load output interactive path are in a conducting state.

[0307] Optionally, the step of filtering target interaction paths satisfying a preset power flow direction from the source load output interaction paths and filtering target extension paths satisfying a preset conduction direction from the interaction extension paths, and constructing a source load output cooperative feasible domain based on the operating parameters of the target interaction paths and the target extension paths and several preset constraint output combinations, includes: Multiple branch device paths within the source-load output interaction path are obtained, and a target interaction path is obtained by filtering from the multiple branch device paths based on a preset power flow direction. The target interaction path is a path in which the physical running direction of the branch devices is the same as the preset power flow direction, and the branch device path is the connection path of the branch devices within the source-load output interaction path. The system obtains multiple cross-regional boundary branches contained within the interactive extension path, and filters out a target extension path from the multiple cross-regional boundary branches based on a preset conduction direction. The target extension path is a cross-regional boundary branch that includes a preset conduction direction, a maximum transmission parameter that meets a parameter threshold, and an operating temperature that meets a temperature threshold. Based on the rated operating parameters of the first electrical component of the target interaction path, the operating status parameters of the second electrical component of the target interaction path, and several preset constraint output combinations, a source-load output collaborative feasible domain is constructed. The first electrical component is an electrical device on the power grid energization path traversed by the target interaction path, and the second electrical component is an electrical device on the cross-regional conduction path involved in the target extension path crossing the partition boundary.

[0308] Optionally, the construction of the source-load output collaborative feasible domain based on the rated operating parameters of the first electrical component of the target interaction path, the operating state parameters of the second electrical component of the target interaction path, and several preset constraint output combinations includes: The maximum allowable power transmission parameters for each target interaction path are calculated based on the rated operating parameters, and the maximum allowable cross-regional power conduction parameters for each target extension path are determined based on the operating status parameters. The power balance range between the output value of the power node and the demand value of the load node of each target interaction path is determined by using the maximum allowable power transmission parameter and the preset source-load demand parameter. The preset source-load demand parameter is the minimum output limit of the power node of the target interaction path and the minimum power demand limit of the load node of the target interaction path. The power balance interval and the maximum allowable cross-regional power conduction parameter are used to construct the power output constraint conditions. Based on the power output constraint conditions, several constraint power output combinations are selected from multiple preset multi-dimensional power output combinations. The source-load power output collaborative feasible region is obtained by combining several constraint power output combinations. The constraint power output combination is a preset multi-dimensional power output combination that satisfies the power output constraint conditions.

[0309] Optionally, the step of selecting target output coordination combinations from the feasible domain of source-load output coordination based on preset scheduling conditions, and performing source-load output scheduling processing according to the target output coordination combinations, includes: Using a preset scheduling target as a scheduling task constraint, several candidate power output coordination combinations are selected from the feasible domain of source-load power output coordination, and the target source-load power output interaction path activated under each candidate power output coordination combination is determined. Several output coordination combinations to be analyzed are selected from several candidate output coordination combinations, wherein the output coordination combinations to be analyzed are candidate output coordination combinations that satisfy the directional conflict constraint in the target source load output interaction path, wherein the directional conflict constraint is that there is no opposite power flow direction. From several output coordination combinations to be analyzed, a target output coordination combination that satisfies the preset scheduling target constraints and overload constraints is determined, and source load output scheduling processing is performed based on the target output coordination combination.

[0310] Optionally, determining the target output coordination combination that satisfies the preset scheduling target constraints and overload constraints from a plurality of the output coordination combinations to be analyzed, and performing source load output scheduling processing according to the target output coordination combination, includes: Several overload output coordination combinations are selected from several output coordination combinations to be analyzed, wherein the overload output coordination combination is an output coordination combination to be analyzed in which the power parameters of each electrical component are less than the rated operating limit. Select several constrained output coordination combinations from several overload output coordination combinations, wherein the constrained output coordination combination is an overload output coordination combination whose power transmission value is less than the maximum allowable cross-regional power transmission parameter and satisfies the preset scheduling operation constraints; The priority score value of each constrained output coordination combination is calculated based on the preset priority weight, and the target output coordination combination is determined from several constrained output coordination combinations according to the priority score value, and the source load output scheduling process is performed according to the target output coordination combination.

[0311] Those skilled in the art will understand that, for ease of description and brevity, the specific working process of the device described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0312] Furthermore, this application also provides an electronic device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, it implements the source-load output scheduling method based on the node power supply circuit as described in the above embodiments.

[0313] Furthermore, embodiments of this application also provide a computer-readable storage medium storing a computer-executable program, the computer-executable program being used to cause a computer to execute the source-load output scheduling method based on node power supply circuits as described in the above embodiments.

[0314] In the description of the embodiments of the present invention, it should be noted that the terms "above," "below," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. When an element such as a layer, region, or substrate is referred to as being "above" or "on top of" another element, it may be directly on the other element, or there may be an intermediate element. Conversely, when an element is referred to as being "directly on" or "above" another element, there is no intermediate element. It should also be understood that when an element is referred to as being "below" or "under" another element, it may be directly below or under the other element, or there may be an intermediate element. Conversely, when an element is referred to as being "directly below" or "under" another element, there is no intermediate element. Unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0315] Those skilled in the art will understand that embodiments of this application may also include computer program products. Therefore, this application may take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0316] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), devices, and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0317] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0318] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0319] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A source-load output scheduling method based on node power supply circuits, characterized in that, The method includes: Obtain the node port information within each source-load associated partition, and construct the source-load output interaction path using the node port information. The node port information includes the output port information of the power node and the input port information of the load node within the source-load associated partition, and the source-load output interaction path is the electrical path on which the power node supplies power to the load node. Determine the connection relationship between the terminal primary device of the source-load output interaction path and the adjacent source-load associated partition, and construct an interaction extension path based on the connection relationship. The interaction extension path is a transmission path in which the power node in a source-load associated partition affects the output of the load node in the remaining connected source-load associated partition through the physical connection of the power grid. Target interaction paths that satisfy a preset power flow direction are selected from the source-load output interaction paths, and target extension paths that satisfy a preset conduction direction are selected from the interaction extension paths. A source-load output collaborative feasible domain is constructed based on the operating parameters of the target interaction paths and the target extension paths, as well as several preset constraint output combinations. The power flow direction is the path direction in which nodes within the source-load output interaction path are connected, and the conduction direction is the path direction in which the source-load associated partitions within the interaction extension path are connected. Based on preset scheduling conditions, target output coordination combinations are selected from the feasible domain of source-load output coordination, and source-load output scheduling is performed according to the target output coordination combinations. The preset scheduling conditions include: scheduling target constraints, directional conflict constraints, and overload constraints.

2. The source-load output scheduling method based on node power supply circuits according to claim 1, characterized in that, The step of obtaining node port information within each source-load associated partition and constructing a source-load output interaction path using the node port information includes: Obtain the output port information of the power node and the input port information of the load node in each source-load associated partition, and determine the port connection status between the power node and the load node based on the input port information and the output port information; Based on the port connection status, several pairs of power load nodes are selected, and a local power supply path is constructed using the primary equipment sequence corresponding to the power load node pairs. The power load node pairs are power nodes and load nodes that provide electrical connection for primary equipment, and the primary equipment sequence is a sequence of all primary equipment arranged in the order in which electrical energy is transmitted from the power node to the load node. Several load nodes to be traced are selected from each source-load associated partition, and reverse path tracing is performed using several load nodes to be traced to obtain the target source-load power supply path. The load nodes to be traced are load nodes of non-power load node pairs. The local power supply path and the target source load power supply path are merged to obtain the source load output interaction path.

3. The source-load output scheduling method based on node power supply circuits according to claim 2, characterized in that, The step of selecting several load nodes to be traced from each source-load associated partition, and using these load nodes to perform reverse path tracing to obtain the target source-load power supply path, includes: In each source-load association partition, several load nodes to be traced are selected, and the target electrical node is obtained by reverse path tracing of each load node to be traced. The target electrical node is the bus node or branch node connected to the second end of the primary equipment of the previous level connected to the load node to be traced. Starting from the target electrical node, the connected primary equipment is traced in reverse along the upstream power direction to obtain the reverse traced equipment link, wherein the reverse traced equipment link is the connection path of the target electrical node to the connected primary equipment in the upstream power direction. The power nodes and electrical nodes of the reverse tracing device link are reconstructed based on a preset reconstruction direction to obtain an initial source-load power supply path, wherein the preset reconstruction direction is the direction of power transmission from the power source to the load. Selecting a target source load power supply path from several initial source load power supply paths, wherein the target source load power supply path is a path in which the real-time operating status information of the primary equipment of the initial source load power supply path meets the preset energy transmission continuity condition.

4. The source-load output scheduling method based on node power supply circuits according to claim 1, characterized in that, The step of determining the connection relationship between the end primary device of the source-load output interaction path and the adjacent source-load associated partition, and constructing the interaction extension path based on the connection relationship, includes: Multiple end primary devices are determined from each of the source-load output interaction paths, wherein the end primary device is a primary device in the source-load output interaction path whose distance from the load node meets a preset distance condition or is located at the boundary of the source-load associated partition; Several initial interaction boundary devices are selected from the multiple end primary devices, wherein the initial interaction boundary devices are end primary devices that are connected across adjacent source-load associated partitions and have an electrical connection relationship with the electrical network of adjacent source-load associated partitions; Select a target interactive boundary device from a plurality of initial interactive boundary devices, wherein the target interactive boundary device is an initial interactive boundary device with power output capability; An interactive extension path is constructed based on the functional attribute type of the first electrical node connected to the target interactive boundary device in the adjacent source-load association partition, wherein the functional attribute type refers to the power grid functional attribute implemented by the electrical node in the power grid.

5. The source-load output scheduling method based on node power supply circuits according to claim 4, characterized in that, The step of constructing the interaction extension path based on the functional attribute type of the first electrical node connected to the target interaction boundary device in the adjacent source-load association partition includes: Obtain the first electrical node connected to the target interactive boundary device in the adjacent source-load association partition, and determine the starting point of the extension path based on the first electrical node, wherein the starting point of the extension path is the location point of the downstream primary device in one or more downstream power supply branches connected to the first electrical node in the downstream load direction; Based on the functional attribute type of the first electrical node, the next level electrical node is traversed and connected step by step along the direction of power flow, starting from the starting point of the extension path, to obtain the forward extension path. The forward extension path and the conductive power supply path corresponding to the target interactive boundary device are merged to obtain the interactive extension path. The conductive power supply path is the source-load output interactive path where the target interactive boundary device is located when the power nodes in the source-load output interactive path corresponding to the target interactive boundary device are in normal operating condition and all primary devices in the source-load output interactive path are in a conducting state.

6. The source-load output scheduling method based on node power supply circuits according to claim 1, characterized in that, The process of selecting target interaction paths that satisfy a preset power flow direction from the source-load output interaction paths and target extension paths that satisfy a preset conduction direction from the interaction extension paths, and constructing a source-load output cooperative feasible domain based on the operating parameters of the target interaction paths and the target extension paths, as well as several preset constraint output combinations, includes: Multiple branch device paths within the source-load output interaction path are obtained, and a target interaction path is obtained by filtering from the multiple branch device paths based on a preset power flow direction. The target interaction path is a path in which the physical running direction of the branch devices is the same as the preset power flow direction, and the branch device path is the connection path of the branch devices within the source-load output interaction path. The system obtains multiple cross-regional boundary branches contained within the interactive extension path, and filters out a target extension path from the multiple cross-regional boundary branches based on a preset conduction direction. The target extension path is a cross-regional boundary branch that includes a preset conduction direction, a maximum transmission parameter that meets a parameter threshold, and an operating temperature that meets a temperature threshold. Based on the rated operating parameters of the first electrical component of the target interaction path, the operating status parameters of the second electrical component of the target interaction path, and several preset constraint output combinations, a source-load output collaborative feasible domain is constructed. The first electrical component is an electrical device on the power grid energization path traversed by the target interaction path, and the second electrical component is an electrical device on the cross-regional conduction path involved in the target extension path crossing the partition boundary.

7. The source-load output scheduling method based on node power supply circuits according to claim 6, characterized in that, The source-load output collaborative feasible domain is constructed based on the rated operating parameters of the first electrical component of the target interaction path, the operating state parameters of the second electrical component of the target interaction path, and several preset constraint output combinations, including: The maximum allowable power transmission parameters for each target interaction path are calculated based on the rated operating parameters, and the maximum allowable cross-regional power conduction parameters for each target extension path are determined based on the operating status parameters. The power balance range between the output value of the power node and the demand value of the load node of each target interaction path is determined by using the maximum allowable power transmission parameter and the preset source-load demand parameter. The preset source-load demand parameter is the minimum output limit of the power node of the target interaction path and the minimum power demand limit of the load node of the target interaction path. The power balance interval and the maximum allowable cross-regional power conduction parameter are used to construct the power output constraint conditions. Based on the power output constraint conditions, several constraint power output combinations are selected from multiple preset multi-dimensional power output combinations. The source-load power output collaborative feasible region is obtained by combining several constraint power output combinations. The constraint power output combination is a preset multi-dimensional power output combination that satisfies the power output constraint conditions.

8. The source-load output scheduling method based on node power supply circuits according to claim 1, characterized in that, The step of selecting target output coordination combinations from the feasible domain of source-load output coordination based on preset scheduling conditions, and performing source-load output scheduling processing according to the target output coordination combinations, includes: Using a preset scheduling target as a scheduling task constraint, several candidate power output coordination combinations are selected from the feasible domain of source-load power output coordination, and the target source-load power output interaction path activated under each candidate power output coordination combination is determined. Several output coordination combinations to be analyzed are selected from several candidate output coordination combinations, wherein the output coordination combinations to be analyzed are candidate output coordination combinations that satisfy the directional conflict constraint in the target source load output interaction path, wherein the directional conflict constraint is that there is no opposite power flow direction. From several output coordination combinations to be analyzed, a target output coordination combination that satisfies the preset scheduling target constraints and overload constraints is determined, and source load output scheduling processing is performed based on the target output coordination combination.

9. The source-load output scheduling method based on node power supply circuits according to claim 8, characterized in that, The step of determining a target output coordination combination that satisfies preset scheduling target constraints and overload constraints from a plurality of output coordination combinations to be analyzed, and performing source load output scheduling processing based on the target output coordination combination, includes: Several overload output coordination combinations are selected from several output coordination combinations to be analyzed, wherein the overload output coordination combination is an output coordination combination to be analyzed in which the power parameters of each electrical component are less than the rated operating limit. Select several constrained output coordination combinations from several overload output coordination combinations, wherein the constrained output coordination combination is an overload output coordination combination whose power transmission value is less than the maximum allowable cross-regional power transmission parameter and satisfies the preset scheduling operation constraints; The priority score value of each constrained output coordination combination is calculated based on the preset priority weight, and the target output coordination combination is determined from several constrained output coordination combinations according to the priority score value, and the source load output scheduling process is performed according to the target output coordination combination.

10. A source-load output scheduling device based on a node power supply circuit, characterized in that, The device includes: The acquisition module is used to acquire node port information within each source-load associated partition and construct a source-load output interaction path using the node port information. The node port information includes the output port information of the power node and the input port information of the load node within the source-load associated partition. The source-load output interaction path is the electrical path on which the power node supplies power to the load node. The relationship building module is used to determine the connection relationship between the terminal primary device of the source-load output interaction path and the adjacent source-load associated partition, and to build an interaction extension path based on the connection relationship. The interaction extension path is a transmission path in which the power node in a source-load associated partition affects the output of the load node in the remaining connected source-load associated partition through the physical connection of the power grid. The feasible domain construction module is used to filter target interaction paths that satisfy a preset power flow direction from the source load output interaction paths and target extension paths that satisfy a preset conduction direction from the interaction extension paths, and to construct a source load output collaborative feasible domain based on the operating parameters of the target interaction paths and the target extension paths and several preset constraint output combinations. The power flow direction is the path direction in which nodes within the source load output interaction paths are connected, and the conduction direction is the path direction in which the source load associated partitions within the interaction extension paths are connected. The output scheduling module is used to select target output coordination combinations from the source-load output coordination feasible domain based on preset scheduling conditions, and to perform source-load output scheduling processing according to the target output coordination combinations. The preset scheduling conditions include: scheduling target constraints, directional conflict constraints, and overload constraints.

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