Power distribution network loop closing power supply control method, device, equipment, system and medium

Abstract

Embodiments of the present application provide a power distribution network loop transfer power supply control method, device, equipment, system and medium. The method comprises: obtaining a power distribution network topology model of the power distribution network; in response to a user's request to open the target switch, setting the switch state of the target switch in the power distribution network topology model to be disconnected, the target switch being in the loop transfer power supply path in the power distribution network topology model; starting from the target switch, extending and traversing the topology to both sides in the loop transfer power supply path to obtain at least one extension path corresponding to each side; verifying whether the condition for performing the opening operation on the target switch is met according to the at least one extension path corresponding to each side; and if the condition is met, performing the opening operation on the target switch. The method does not need to manually check or judge whether the loop is successful by experience, improves the accuracy and safety of the loop transfer operation, and reduces the risk of misjudgment and misoperation.

Description

Technical Field

[0001] This application relates to the field of power distribution network automation control, and in particular to a method, device, equipment, system and medium for power distribution network loop switching control. Background Technology

[0002] In the daily operation and maintenance of the power distribution network, such as overhaul, load transfer, and load switching, loop-connected power supply is the core operation method to ensure uninterrupted power supply to users. Its core operation principle is to first connect the loop and then disconnect the switch. That is, first close the tie switch to form a loop network, and after confirming that the loop connection is successful, disconnect the target switch of the original power supply line to achieve a smooth transfer of load.

[0003] In existing distribution network loop-closing operations, the success of loop closure determination largely relies on manual intervention. Specifically, maintenance personnel typically need to rely on their personal experience to manually observe whether the closing remote signal returned by the tie switch has changed position through the human-machine interface of the distribution automation master station system, or continuously monitor whether the electrical quantities on both sides of the loop closure point tend to be consistent after closing, in order to determine whether the loop closure is successful and thus determine whether the target switch can be opened.

[0004] In scenarios with complex distribution network topologies and multiple equipment levels, existing technologies are prone to oversights due to visual fatigue or distraction of maintenance personnel, making it difficult to guarantee the accuracy and reliability of judgments. Consequently, the accuracy of distribution network loop-based power supply control is relatively low. Summary of the Invention

[0005] This application provides a method, device, equipment, system, and medium for controlling the loop-connected power supply in a power distribution network, in order to improve the accuracy and reliability of judging the target switch operation during the loop-connected power supply process.

[0006] In a first aspect, embodiments of this application provide a method for controlling the loop-connected power supply of a distribution network, including:

[0007] Obtain the distribution network topology model;

[0008] In response to a user's request to trip the target switch, the switch status of the target switch in the distribution network topology model is set to open, and the target switch is in the closed-loop power supply path in the distribution network topology model;

[0009] Starting from the target switch, a topological extension traversal is performed in both directions in the closed-loop power supply path to obtain at least one extension path corresponding to each side.

[0010] Based on at least one extension path corresponding to each side, verify whether the conditions for performing a tripping operation on the target switch are currently met.

[0011] If the conditions are met, the tripping operation is performed on the target switch.

[0012] In one possible implementation, the step of performing a topological extension traversal in both directions from the target switch as the starting point to obtain at least one extension path corresponding to each side includes:

[0013] Starting from the target switch, the topology is extended to both sides in the closed-loop power supply path, and the process stops when the substation busbar or a switch in an open state is reached, thus obtaining the corresponding extension path.

[0014] In one possible implementation, verifying whether the conditions for performing a tripping operation on the target switch are met based on at least one extended path corresponding to each side includes:

[0015] If at least one of the corresponding extension paths on each side has an extension path extending to the substation busbar, then it is determined that the current condition for performing the tripping operation on the target switch is met.

[0016] If there is no extension path extending to the substation busbar in at least one of the corresponding extension paths on either side, then it is determined that the conditions for performing the tripping operation on the target switch are not currently met.

[0017] In one possible implementation, obtaining the distribution network topology model includes:

[0018] Obtain the static topology of the power distribution network;

[0019] The distribution network topology model is generated based on the static topology of the distribution network and the real-time status data of the distribution network stored in the distribution network automation master station.

[0020] In one possible implementation, obtaining the static topology of the distribution network includes:

[0021] Based on the GIS and / or PMS corresponding to the distribution network, construct the static topology of the distribution network.

[0022] In one possible implementation, the method further includes:

[0023] If the conditions for performing the tripping operation on the target switch are not met, then the tripping operation on the target switch is not performed, and the switch state of the target switch in the distribution network topology model is restored to closed.

[0024] Alarm information is displayed through a human-computer interaction interface. The alarm information is used to remind the user that the loop-closing operation was not performed on the loop-closing power supply path.

[0025] Secondly, embodiments of this application provide a power distribution network loop-connection and switching control device, comprising:

[0026] The topology acquisition module is used to acquire the distribution network topology model of the distribution network;

[0027] The request response module is used to respond to a user's request to open the target switch, and to set the switch status of the target switch in the distribution network topology model to open, wherein the target switch is in the closed-loop power supply path in the distribution network topology model;

[0028] The topology extension module is used to perform topology extension traversal to both sides of the closed-loop power supply path, starting from the target switch, to obtain at least one extension path corresponding to each side.

[0029] The tripping determination module verifies whether the conditions for performing a tripping operation on the target switch are met based on at least one extended path corresponding to each side.

[0030] The tripping operation module is used to perform the tripping operation on the target switch if the conditions are met.

[0031] In one possible implementation, the topology extension module is specifically used for:

[0032] Starting from the target switch, the topology is extended to both sides in the closed-loop power supply path, and the process stops when the substation busbar or a switch in an open state is reached, thus obtaining the corresponding extension path.

[0033] In one possible implementation, the tripping determination module is specifically used for:

[0034] If at least one of the corresponding extension paths on each side has an extension path extending to the substation busbar, then it is determined that the current condition for performing the tripping operation on the target switch is met.

[0035] If there is no extension path extending to the substation busbar in at least one of the corresponding extension paths on either side, then it is determined that the conditions for performing the tripping operation on the target switch are not currently met.

[0036] In one possible implementation, the topology acquisition module is specifically used for:

[0037] Obtain the static topology of the power distribution network;

[0038] The distribution network topology model is generated based on the static topology of the distribution network and the real-time status data of the distribution network stored in the distribution network automation master station.

[0039] In one possible implementation, the topology acquisition module is further specifically used for:

[0040] Based on the GIS and / or PMS corresponding to the distribution network, construct the static topology of the distribution network.

[0041] In one possible implementation, the power distribution network loop-to-loop power supply control device further includes:

[0042] The recovery module is used to restore the switch state of the target switch in the distribution network topology model to closed if the conditions for performing the tripping operation on the target switch are not currently met.

[0043] The display module is used to display alarm information through a human-computer interaction interface. The alarm information is used to remind the user that the loop-closing operation was not performed on the loop-closing power supply path.

[0044] Thirdly, embodiments of this application provide an electronic device, including: a memory and a processor;

[0045] The memory stores computer-executed instructions;

[0046] The processor executes computer execution instructions stored in the memory, causing the processor to perform the first aspect and / or various possible implementations of the first aspect as described above.

[0047] Fourthly, embodiments of this application provide a power distribution network loop-connection control system, comprising:

[0048] Electronic equipment, power distribution network automation master station, geographic information system (GIS), and production management system (PMS).

[0049] Fifthly, embodiments of this application provide a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, are used to implement the first aspect and / or various possible implementations of the first aspect.

[0050] The distribution network loop-connection power supply control method, device, equipment, system, and medium provided in this application embodiment acquire the distribution network topology model. Upon receiving a tripping request for a target switch, the switch status of the target switch is set to open in the distribution network topology model. Starting from the target switch, a topology extension traversal is performed along the loop-connection power supply path to both sides. The current condition for tripping the target switch is verified by combining at least one extension path on each side. Since the topology extension traversal can choose any device as the starting point and extend outwards level by level along the power grid topology, and acquires the current open and closed status of the switches and disconnectors along the path in real time during the search, these real-time statuses are connected in series along the traversal path. This allows for accurate determination of whether the circuit is conducting (all devices are closed) or disconnected (at least one device is open). Therefore, starting from the target switch and assuming its switch status is open, a topology extension traversal to both sides can determine whether the circuit is conducting during the loop-connection power supply, thereby determining whether the tie switch is closed, and further determining whether the target switch can be disconnected. This improves the accuracy and reliability of the target switch operation judgment during the loop-connection power supply process. Attached Figure Description

[0051] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0052] Figure 1 This application scenario illustrates the method for controlling the closed-loop power supply in a distribution network provided in this application. Figure 1 ;

[0053] Figure 2 This is a flowchart of an embodiment of the power supply control method for a distribution network loop-turning provided in this application;

[0054] Figure 3 A flowchart of Embodiment 2 of the power supply control method for distribution network loop switching provided in this application;

[0055] Figure 4 A flowchart of Embodiment 3 of the power supply control method for distribution network loop switching provided in this application;

[0056] Figure 5 The flowchart is for Embodiment 4 of the power supply control method for distribution network loop switching provided in this application;

[0057] Figure 6 This application scenario illustrates the method for controlling the closed-loop power supply in a distribution network provided in this application. Figure 2 ;

[0058] Figure 7 A schematic diagram of the power supply control device for the distribution network loop-turning system provided in this application;

[0059] Figure 8 A schematic diagram of the structure of the electronic device provided in this application;

[0060] Figure 9 A schematic diagram of the power supply control system for the distribution network loop-turning provided in this application.

[0061] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0062] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0063] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties. Furthermore, the collection, use and processing of the relevant data must comply with relevant laws, regulations and standards, and corresponding operation entry points are provided for users to choose to authorize or refuse.

[0064] In current distribution network loop-closing and power transfer operations, the determination of successful loop closure mainly relies on manual judgment. Specifically, operators typically rely on two signals for judgment: first, checking the closing remote signal transmitted by the tie switch to confirm whether the tie switch has executed the closing command; second, observing the changes in electrical quantities on both sides of the tie switch (such as voltage amplitude difference, phase difference, and current flowing through the tie switch), and manually analyzing whether these analog quantities tend to be consistent to determine whether the loop closure is truly successful. Furthermore, in preventing accidental switch disconnection, current methods used in distribution networks mainly focus on the institutional review of operation tickets or the deployment of five-prevention interlocking mechanisms for individual equipment (such as preventing the disconnection of disconnectors under load and preventing the closing of grounding switches while energized), to avoid misoperation from both management and equipment perspectives.

[0065] Specifically, relying on manual observation of electrical quantity changes to determine the success of loop closure requires operators with high levels of professional experience. Furthermore, in scenarios with numerous switches and frequent loop closure operations in distribution automation, manual judgment is inefficient and prone to oversights or misjudgments. This could lead to mistakenly believing the loop closure is successful before it is actually complete, resulting in subsequent switch disconnection operations and causing power outages. Operation ticket verification is a management-based error prevention measure, relying on standardized operating procedures and the responsibility of the personnel, but it cannot detect real-time changes in equipment status. Five-prevention interlocking of a single device can only prevent misoperations at the device level (such as accidentally pulling a disconnect switch), but it cannot solve the logical error prevention problem in the systemic operation of loop closure and power transfer.

[0066] To address the aforementioned problems, this invention provides a method for controlling the loop-connected power supply in a distribution network. The technical concept is as follows: Existing technologies primarily rely on individual determination of successful connection, which cannot guarantee the rigor of the manual processing, leading to low accuracy and reliability in judging the target switch operation. Based on this, the inventors conceived of a method to improve the accuracy and reliability of the operation by verifying the loop-connected power supply path before performing a tripping operation on the target switch, and then performing the tripping operation on the target switch only after confirming the successful loop-connection of the power supply path. Therefore, a distribution network topology model can be obtained. When a user initiates a tripping request for a target switch, the state of the target switch in the distribution network topology model is first set to open. Starting from the target switch, a topology extension traversal is performed to both sides of the loop-connected power supply path, obtaining at least one extension path on each side. Then, based on the connectivity results reflected by each side's extension path, it is verified whether the conditions for performing a tripping operation on the target switch are met. Only when the conditions are confirmed to be met is the tripping operation on the target switch allowed, ensuring the accuracy and reliability of the tripping operation.

[0067] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0068] In distribution network operation, loop switching is an operational method used to achieve load transfer, equipment maintenance, or fault isolation. Its core objective is to switch the load from one feeder to another without power interruption. For example, Figure 1 This application scenario illustrates the method for controlling the closed-loop power supply in a distribution network provided in this application. Figure 1 ,like Figure 1As shown, the 10kV busbar of substation A supplies power to the feeder on side A through circuit breaker A0. Section switch A1 is located on feeder A and is normally closed to ensure feeder A is continuous. The 10kV busbar of substation B supplies power to feeder on side B through circuit breaker B0. Section switch B1 is located on feeder B and is normally closed to ensure feeder B is continuous. Feeder A and feeder B are connected by tie switch k, which is normally open. The feeders on both sides are independent and do not affect each other.

[0069] When feeder A or the power source needs maintenance, the closed-loop power supply process is as follows: First, under the premise of meeting the closed-loop conditions, close the tie switch k to form a ring network with feeder B, allowing feeder A and feeder B to operate in parallel. At this time, the entire circuit can be called a closed-loop power supply path. Then, disconnect circuit breaker A0 on side A. The circuit between the 10kV busbar of substation A and circuit breaker A0 is de-energized, and the 10kV busbar of substation B supplies power to circuit breaker B0, sectionalizing switch B1, tie switch k, and sectionalizing switch A1. After maintenance is completed, close A0 and disconnect k to restore normal open-loop operation.

[0070] Figure 2 The flowchart of Embodiment 1 of the distribution network loop-connection power supply control method provided in this application is as follows: Figure 2 As shown, the method includes:

[0071] S201: Obtain the distribution network topology model.

[0072] The execution subject of this application embodiment is an electronic device, which can be a terminal device, such as a laptop, desktop computer, or tablet computer, or a server. In practical applications, whether the electronic device is a terminal device or a server can be determined according to the actual situation, and no specific limitation is imposed on it.

[0073] A distribution network can include objects such as substation busbars, feeders, ring main units, switches, disconnectors, tie points, distribution transformers, and load nodes. Among them, busbars represent the power supply side aggregation nodes, and switches and disconnectors represent control equipment in the network that can form a connection or isolation relationship.

[0074] A distribution network topology model is a data model used to describe various primary devices and their connections within a distribution network. It includes at least device nodes, connection edges, device types, unique device identifiers, the feeders to which the devices belong, upstream and downstream adjacency relationships, and data index information associated with operational status. The distribution network topology model reflects the electrical connectivity structure of the objects within the distribution network, as well as their real-time status.

[0075] In one possible implementation, the static topology of the distribution network can be obtained first, and then a distribution network topology model can be generated based on the static topology of the distribution network and the real-time status data of the distribution network stored in the distribution network automation master station.

[0076] Optionally, the distribution network topology model can be pre-established, obtained from other storage devices, or obtained from the network. This application embodiment does not impose specific limitations on this.

[0077] It should be understood that the specific implementation process and principles of this method will be explained later. Figure 3 The embodiments shown are described in detail here, and will not be repeated here.

[0078] S202: In response to a user's request to trip the target switch, set the switch status of the target switch in the distribution network topology model to open.

[0079] The target switch is located in the closed-loop power supply path in the distribution network topology model, and is the switching equipment that the user intends to perform a tripping operation on. For example... Figure 1 Circuit breaker A0 and circuit breaker B0 are included.

[0080] In practical applications, a human-machine interface can be used to display the distribution network topology model. Operators can click on target switches in the model, causing electronic equipment to display clickable controls around the target switch, such as trip and close controls. Operators can further click on the trip control, and the electronic equipment will then generate a trip request for the target switch. This request includes information such as the target switch identifier, operation time, operator identity, feeder affixed, and reason for operation.

[0081] A closed-loop power supply path refers to a loop-shaped power supply path formed by closing a tie switch under the current power supply method. (Refer to...) Figure 1 The circuit structure shown is shown.

[0082] In this embodiment, upon receiving a tripping request, a tripping command is not immediately issued to the actual physical switch corresponding to the target switch. Instead, logical-level state preprocessing is first performed in the distribution network topology model. Specifically, in the distribution network topology model, the target switch is located based on the target switch identifier in the tripping request, and the target switch is locked at the session level or occupied at the task level to prevent concurrent modification by other operations during the verification period. Subsequently, the state of the target switch in the current computing context is rewritten from closed to open, or a virtual disconnection flag is added, so that subsequent connectivity analysis treats the target switch as a non-conductive device.

[0083] It is important to understand that setting it to disconnect here is a simulation state change within the distribution network topology model, and does not mean that a physical disconnection action has been performed. Its purpose is to simulate the network connection result after the target switch is disconnected before operation.

[0084] S203: Starting from the target switch, perform a topological extension traversal on both sides of the closed-loop power supply path to obtain at least one extension path on each side.

[0085] Among them, topology extension traversal refers to the process of searching outward from both ends of the target switch to form a power supply path based on the distribution network topology model and along the electrical connection relationship between devices. This power supply path is the extension path.

[0086] For example, in Figure 1 Based on this, assuming circuit breaker A0 is the target switch and tie switch k is in the closed state, then circuit breaker A0 is regarded as the starting point, extending to the left to the 10kV bus of substation A, forming a power supply path, which is circuit breaker A0-substation A 10kV bus; extending to the right through sectionalizing switch A1, tie switch k, sectionalizing switch B1, and circuit breaker B0 to the 10kV bus of substation B, forming a power supply path, which is circuit breaker A0-sectionalizing switch A1-timing switch k-sectionalizing switch B1-circuit breaker B0-substation B 10kV bus.

[0087] In one possible implementation, starting from the target switch, a topology extension traversal is performed to both sides in the closed-loop power supply path, stopping when the traversal reaches the substation bus or a switch in an open state, thus obtaining the corresponding extension path.

[0088] For example, the busbar is Figure 1 The 10kV busbar of substation A and the 10kV busbar of substation B.

[0089] Specifically, the two endpoints after the target switch is turned off are used as the starting points for the first traversal (e.g., Figure 6 P1 in the second traversal starting point (e.g., P1 in the second traversal starting point) Figure 6 In P2 of the diagram, the traversal algorithm can employ either Breadth-First Search (BFS) or Depth-First Search (DFS) to traverse the distribution network topology model. During the traversal, the status of the devices (switches and disconnectors) along the path needs to be obtained in real time, and the decision to continue traversing is made based on the status of the devices (switches and disconnectors). For example, when encountering a switch in the open position, a disconnector in the maintenance lockout state, a power outage isolation point, or a device with an invalid and unconfirmed status, it is considered an open circuit, and the extension traversal of that path is immediately terminated; when encountering a device in the closed position with a reliable status, it is considered a closed circuit, and the extension of adjacent nodes is allowed; the target switch is always considered an open circuit, and any path is prohibited from passing through it. When the accessed device is identified as a substation bus, it indicates that the power supply boundary has been reached in that direction, and the traversal in that direction is immediately terminated.

[0090] Specifically, during traversal, a queue to be traversed and a set of visited nodes are established for each side to avoid dead loops caused by repeatedly visiting the same node in a ring network structure. At the same time, the path record retains the device identifier, device status, feeder to which it belongs, and arrival depth for each step to form a traceable path detail. For distribution networks with more complex structures, there may be multiple reachable branches on a certain side. All of these branches can be recorded as the set of extended paths on that side, or only the set of valid paths that meet the conduction conditions can be retained, and the key breakpoints, branch nodes, and endpoint types on the path are saved simultaneously.

[0091] In the above implementation, the traversal boundary is limited to the substation busbar and disconnect switch, so that the search range is always controlled within the critical power supply links on both sides of the target switch. This avoids redundant expansion caused by irrelevant branches and the risk of accidental switch disconnection caused by human experience judgment. At the same time, it reduces the amount of calculation and improves response efficiency, thereby improving the response speed.

[0092] Based on the above analysis, it can be seen that by extending the topology outwards from the target switch as the center, the power supply paths that each side can rely on after the target switch is disconnected can be identified at the structural level. This transforms the connectivity relationships, originally determined by operational experience, into calculable and traceable path results. This process not only accurately reflects the actual network reachability on both sides of the target switch but also maintains high analytical stability under complex branch circuits, multiple connection points, and local state changes, thus providing direct evidence for verifying the tripping conditions.

[0093] S204: Based on at least one extension path corresponding to each side, verify whether the current conditions for performing a tripping operation on the target switch are met.

[0094] The tripping operation conditions refer to the comprehensive judgment conditions that, after the target switch is actually disconnected, will not cause either side of the target switch to lose its due power support, will not form an unexpected island, will not damage the current closed-loop power transfer target, and will meet the operational safety constraints.

[0095] In one possible implementation, if at least one extension path on each side has an extension path extending to the substation busbar, then it is determined that the current condition for performing a tripping operation on the target switch is met; if at least one extension path on either side does not have an extension path extending to the substation busbar, then it is determined that the current condition for performing a tripping operation on the target switch is not met.

[0096] Specifically, after obtaining at least one extension path corresponding to each side of the target switch, a connectivity determination is performed on each extension path, and the status of the node devices in the extension path is compared with the attributes of the endpoint node. For any extension path, if all switches, disconnectors, or other connecting devices along its route are in a conducting state, and the extension path ultimately corresponds to a substation busbar node, then the extension path is determined as a valid path extending to the busbar; if the extension path encounters a disconnected device at any intermediate node, or if the endpoint is not the substation busbar, then the extension path is not counted as a valid path. After performing the above determination on all extension paths, the result satisfying the tripping condition is output only when there is at least one valid path on each side.

[0097] Furthermore, after determining that the extended path extends to the substation busbar, a loop-connected equipment current-carrying capacity check can be performed. This involves further reading the line load, current limit, and equipment capacity of the line that the extended path will supply power to, to determine whether the transfer will exceed the allowable threshold. Specifically, after the extended path extends to the substation busbar, it is identified as a candidate power supply path. The safety margin is determined by subtracting the expected load after transfer from the upper limit of the candidate power supply path's capacity. When the safety margin is greater than zero, it indicates that the candidate power supply path is acceptable in terms of capacity, and the extended path is identified as a valid path extending to the busbar. When the safety margin is less than or equal to zero, it indicates that there is an overload risk for the candidate power supply path, and it is not included in the valid path count.

[0098] In the above implementation method, by determining whether the extension path on each side of the target switch extends to the substation bus, it is determined whether the conditions for performing the tripping operation on the target switch are met. This replaces the traditional method that relies on analog quantity fluctuations, experience judgment, or single-point state speculation. This allows the scenario of unsuccessful loop closure to be identified before tripping, significantly reducing the possibility of the power outage range expanding or the transfer failure caused by erroneous tripping.

[0099] S205: If satisfied, then perform a tripping operation on the target switch.

[0100] Performing a tripping operation refers to the process of issuing an actual tripping control command to the field equipment or generating a permission and having the operator confirm the execution after the aforementioned verification results show that disconnecting the target switch will not disrupt the established power supply continuity and meets safety constraints.

[0101] In one possible implementation, the aforementioned task-level occupancy restriction set for the target switch is first lifted, and a tripping execution task with a timestamp, operation ticket association information, target switch identifier, and verification conclusion is generated. Subsequently, if the current mode is remote control mode, a tripping command is issued to the corresponding terminal equipment, ring main unit control unit, feeder terminal, or switch controller through the distribution network automation communication link according to the tripping execution task, and the system waits for a return execution confirmation signal; if the current mode is manual review, the verification pass result, bilateral path summary, and tripping risk warning are displayed on the human-machine interface, and the tripping command is issued only after the operator confirms.

[0102] To ensure operational reliability, a timeout monitoring and result verification process can be initiated after the tripping command is issued. For example, within a preset time window, changes in the switch position are received. If the target switch is detected to change from the closed to the open position, the tripping is considered successful. If no status change is received or a failure code is returned, an alarm is generated and the corresponding operation record is maintained. After the tripping is completed, the actual status of the target switch in the distribution network topology model is updated from virtual disconnection to actual disconnection. The network topology of the relevant feeders is recalculated, and the distribution network topology model is updated so that subsequent monitoring, power flow estimation, or fault handling are all based on the latest distribution network topology model.

[0103] Furthermore, the original request, virtual switching result, bilateral extension path, condition verification conclusion, command sending record, and on-site feedback information involved in this operation can be written to the operation log, audit database, or event traceability database for subsequent operation analysis and accountability tracking. If a communication interruption, equipment lockout status change, or a prohibition signal from the superior system is detected before actual execution, the switching operation is stopped and a new verification is initiated to prevent inconsistencies where the verification passes but on-site conditions change.

[0104] In another possible implementation, after the circuit breaker is tripped, the energized status, load distribution, or downstream user power supply status on both sides of the target switch can be monitored to verify whether the power transfer result meets expectations.

[0105] This application provides a method for controlling the loop-connected power supply in a distribution network. First, a distribution network topology model is obtained. Then, in response to a user's request to open a target switch, the switch state of the target switch in the distribution network topology model is set to open. Next, starting from the target switch, a topology extension traversal is performed to both sides of the loop-connected power supply path, obtaining at least one extension path for each side. Finally, based on the at least one extension path for each side, it is verified whether the conditions for performing a circuit breaker operation on the target switch are met; if so, the circuit breaker operation is performed on the target switch. The target switch is located within the loop-connected power supply path in the distribution network topology model. In this technical solution, before performing a circuit breaker operation on the switch state, a topology extension traversal is performed in the loop-connected power supply path in the distribution network topology model starting from the target switch to determine whether the circuit is conducting during the loop-connected power supply, thereby determining whether the tie switch is closed, and further determining whether the target switch can be opened. This not only avoids the lag and uncertainty caused by relying on indirect judgments based on changes in analog quantities such as voltage and current, but also enables the determination of tripping permission based on traceable topology path results even in cases of status acquisition delays, incomplete local information, or differences in operating experience. This improves the real-time performance, accuracy, reliability, and security of distribution network loop-connection and power transfer operations.

[0106] Figure 3 The flowchart for Embodiment 2 of the distribution network loop-connection power supply control method provided in this application is as follows: Figure 3 As shown, S201 can be achieved through the following steps:

[0107] S301: Obtain the static topology of the distribution network.

[0108] Among them, the static topology is used to characterize the connection relationship between various primary devices in the distribution network at the basic ledger level. Its construction process does not rely on real-time telemetry, but rather on the master data in the existing information system to form a stable topology skeleton.

[0109] For example, a static topology can consist of nodes and edges connecting different nodes. Nodes represent devices such as buses, load points, or switch terminals, while edges represent the connections between conductor segments or conductive devices.

[0110] In one possible implementation, the static topology of the distribution network can be constructed based on the Geographic Information System (GIS) and / or Production Management System (PMS) corresponding to the distribution network.

[0111] Among them, GIS is used to provide spatial location, line routing, pole or station distribution, and spatial association information between adjacent equipment in the distribution network. PMS is used to provide information such as equipment ledger, primary wiring relationships, equipment number, voltage level, and operation and maintenance records for the distribution network. Based on one or more of the above data sources, objects such as busbars, lines, switches, disconnectors, transformers, and load nodes are extracted, and the correspondence between nodes and edges is established according to their primary wiring relationships, thereby forming the static topology of the distribution network.

[0112] When building solely based on GIS, the topological connections of power distribution lines can be identified based on map coordinates, line segment connectivity, and equipment connection relationships. Equipment with spatial adjacency and meeting electrical connectivity rules can be grouped into a set of topological nodes to construct a static topological structure. When building solely based on PMS, the network relationships can be restored once based on equipment ownership, terminal connections, and wiring diagram records in the ledger. Equipment relationships within the same feeder, the same switch section, or the same busbar section can be mapped to static topological connections to obtain the constructed static topological structure.

[0113] If both GIS and PMS exist, unique device identifiers can be uniformly encoded, and the names, numbers, and connection descriptions of the same device in both systems can be matched and verified to correct connection omissions caused by update delays, missing fields, or input errors. Then, a static topology can be built based on either system, and this static topology can be verified using data from the other system. For example, an initial static topology can be built based on GIS. Then, this initial static topology is verified using PMS data. If the verification passes, the initial static topology is confirmed as a static topology; if the verification fails, the initial static topology is corrected based on PMS data.

[0114] In the above implementation method, since the static topology structure comes from the basic equipment data in GIS and / or PMS, the basic connectivity relationship of the distribution network can be quickly established without relying on real-time status fluctuations, thereby improving the continuity and consistency of subsequent topology analysis and reducing the judgment bias caused by incomplete local status data.

[0115] In practical applications, incremental updates are triggered after operations such as adding, deleting, modifying, adjusting wiring methods, or switching feeders are detected in the distribution network, so that the static topology structure remains consistent with the actual distribution network structure.

[0116] S302: Generate a distribution network topology model based on the static topology of the distribution network and the real-time status data of the distribution network stored in the distribution network automation master station.

[0117] In one possible implementation, real-time status data is mapped and matched with the unique identifiers of devices in the static topology structure, thereby overlaying the current status of the devices onto the static topology structure to form a distribution network topology model that can be used for traversal and judgment.

[0118] In this embodiment of the application, when determining whether the conditions for the target switch to perform a tripping operation are met, it is not necessary to reconstruct the distribution network topology model. It is only necessary to obtain the pre-constructed static topology structure and integrate the real-time status data of the distribution network stored in the distribution network automation master station into the above static topology structure. This improves the efficiency of obtaining the distribution network topology model and further improves the efficiency of performing tripping operations on the target switch.

[0119] Figure 4 The flowchart for Embodiment 3 of the distribution network loop-connection power supply control method provided in this application is as follows: Figure 4 As shown, in Example 2 S205, if the condition is met, a tripping operation is performed on the target switch, including:

[0120] S401: If the conditions for performing a tripping operation on the target switch are not met, then the tripping operation on the target switch will not be performed, and the switch status of the target switch in the distribution network topology model will be restored to closed.

[0121] In one possible implementation, if the conditions for performing a tripping operation on the target switch are not met, the tripping operation on the target switch cannot be performed. In order to ensure the consistency between the distribution network topology model and the actual situation, the switch state of the target switch needs to be restored to closed.

[0122] S402: Display alarm information through the human-machine interface.

[0123] The human-machine interface can be the distribution network automation master station interface, the dispatch terminal interface, or the mobile operation and maintenance terminal interface.

[0124] The alarm information is used to remind users that the loop-closing operation has not been performed on the loop-closing power supply path. It can be output through pop-up windows, color flashing, voice prompts or status bar prompts so that operators can know the reason why the current circuit breaker is prohibited from being tripped in a timely manner.

[0125] In one possible implementation, an alarm identifier corresponding to the target switch can be loaded on the human-machine interface, and the name of the switch that has not closed the loop, the line segment to which it belongs, or the reason for the alarm can be displayed in conjunction with it to improve troubleshooting efficiency.

[0126] Furthermore, it can also be simultaneously pushed to the distribution network automation master station or operation and maintenance terminal to form multi-terminal reminders.

[0127] This application embodiment, through the aforementioned control method, can prevent the target switch from erroneously tripping when the loop-closing conditions are not met, thus avoiding power supply path disconnection, load transfer failure, or partial power outage due to incomplete loop-closing operation. Simultaneously, alarm information can remind operators that the loop-closing operation for the power transfer path has not been performed, helping them to correct the situation promptly.

[0128] To more clearly explain the distribution network loop-connection power supply control method in the above embodiments, the following will combine... Figure 5 Further description is required.

[0129] Figure 5 The flowchart for Embodiment 4 of the distribution network loop-connection power supply control method provided in this application is as follows: Figure 5 As shown, it includes:

[0130] S501: Obtain the connection relationship of distribution network equipment and establish a distribution network topology model.

[0131] Obtain the basic connection relationships of all devices in the distribution network from the distribution network automation master station, GIS, or PMS to construct the static topology of the distribution network. Then, based on the static topology of the distribution network and the real-time status data of the distribution network stored in the distribution network automation master station, generate the distribution network topology model.

[0132] S502: Receives a user's request to trip the target switch.

[0133] S503: Virtually set the target switch to the open position and treat it as an open circuit.

[0134] Before initiating topology extension traversal, the target switch is virtually set to a break position and treated as an open circuit, and does not participate in any path extension. This avoids the target switch being mistakenly regarded as a closed circuit during topology extension, which could lead to errors in the loop closure status judgment. This ensures the rigor and authenticity of the loop closure judgment and closely matches the actual on-site operation scenario.

[0135] S504: Perform a topological extension traversal from the nodes on both sides of the target switch to obtain the extension path.

[0136] Starting from the two side nodes of the target switch, a topological extension traversal is performed outwards. During the extension traversal, the real-time open / closed status of each switch and disconnector passed along the path is obtained. If the switch or disconnector passed along the path is in the closed position, it is considered a closed circuit, and the extension traversal is allowed to continue. If the switch or disconnector passed along the path is in the open position, it is considered an open circuit, and the extension traversal in that direction is terminated immediately. The target switch after virtual opening is always considered an open circuit, and any path is prohibited from passing through it.

[0137] The traversal uses either BFS or DFS algorithms. At each extension step, the real-time status of the equipment being passed is read in real time. Once the extension reaches any 10kV busbar of a substation, the traversal in that direction stops immediately and does not continue to extend outward, thereby minimizing the traversal range, significantly reducing the amount of computation, and improving the verification response speed.

[0138] S505: Determine whether the loop closure was successful based on the extended path.

[0139] Based on the topology extension traversal results of the nodes on both sides, determine whether each node can be independently extended to at least one 10kV busbar of a substation.

[0140] If each node can independently reach the 10kV bus of the substation through topology extension traversal, it is determined that the current distribution network has been successfully closed, and both sides of the target switch have effective power supply paths. Disconnecting the target switch will not cause power outages for users. If any node cannot be connected to the 10kV bus of the substation through topology extension traversal, it is determined that the distribution network has not been closed or there is a power supply interruption. In this case, disconnecting the target switch will cause power outages for users.

[0141] If yes, then execute S506; otherwise, execute S507.

[0142] S506: Unlock permission, allow circuit breaker to trip.

[0143] If the loop closure is successful, the tripping permission of the target switch is unlocked, allowing the operator to perform the tripping operation.

[0144] S507: Forced locking, alarm pops up.

[0145] If the loop is not closed, the tripping operation of the target switch will be forcibly blocked, and an alarm prompt will be displayed to remind the operator of the endpoint of the extended path, so that the operator can quickly troubleshoot the problem.

[0146] For example, the alarm message could be "loop not closed" or "disconnection of switch prohibited".

[0147] Furthermore, the target switch is set to the closed position and processed as a circuit.

[0148] This application's embodiment employs a logic that extends from the nodes on both sides of the target switch and stops traversing upon reaching the 10kV busbar, avoiding a full network traversal. This minimizes the traversal range, significantly reduces computational load, and improves response speed to within 1 second, meeting the real-time control requirements of distribution networks and solving the problems of high computational load and slow response in existing technologies. During the traversal, the real-time open / closed status of the switches and disconnectors along the path is acquired, achieving synchronization between traversal and status acquisition. This avoids misjudgments caused by lag in static status acquisition. Simultaneously, the target switch is virtually set to the open position to prevent it from being mistakenly considered a closed circuit, ensuring that the loop closure determination result is consistent with the actual situation on site. This fundamentally prevents power outages caused by erroneous switch disconnection before loop closure. This method is based solely on the distribution network topology model, achieving loop closure determination through topology extension traversal. It does not rely on electrical quantities such as voltage, current, and phase, and is unaffected by the accuracy of measurement equipment. It can be widely applied to various 10kV and below distribution network lines. The topology extension algorithm adopts mature BFS and DFS algorithms, requiring no large-scale modification to the existing distribution network automation system. It can be directly embedded into the existing distribution network automation master station, resulting in low modification costs, engineering friendliness, and easy promotion and application. Only the connection relationship of distribution network equipment needs to be obtained in advance to build the distribution network topology model, without the need to obtain the real-time status of all switches and disconnectors in advance, reducing the pressure of data acquisition and processing in the early stage.

[0149] To more clearly explain the distribution network loop-connection power supply control method in the above embodiments, the following will combine... Figure 6 The following is a description of a specific embodiment, using a 10kV distribution network loop switching power supply scenario as an example to illustrate the implementation process of the present invention.

[0150] Figure 6 This application scenario illustrates the method for controlling the closed-loop power supply in a distribution network provided in this application. Figure 2 ,like Figure 6 As shown: A certain 10kV distribution network has two power supply lines, namely the original supply line L1 and the transfer supply line L2. The specific distribution network topology model of the two lines is as follows:

[0151] Original power supply line L1: Powered by the 10kV bus of substation A, with sectionalizing switch K3 and disconnecting switch K1 (original power supply switch) connected in series.

[0152] Transfer line L2: Powered by the 10kV busbar of substation B, with series switch K2 and tie switch K0;

[0153] After the tie switch K0 is closed, the original power supply line L1 and the transfer power supply line L2 can be closed in a loop. After the loop is closed, K1 needs to be disconnected to complete the load transfer.

[0154] The nodes on both sides of the switch to be disconnected, K1, are: node P1 (the side closer to the sectionalizing switch K3) and node P2 (the side closer to the connecting switch K0).

[0155] The following describes the distribution network loop-based power supply control methods under two scenarios: one for normal scenarios and one for abnormal scenarios.

[0156] In a normal scenario, the distribution network topology model is displayed on the human-machine interface. The operator clicks on the switch to be disconnected, K1, to initiate a tripping request. Based on the tripping request, K1 and its adjacent nodes P1 and P2 are locked to prevent changes in the state of K1 and related switches during the verification process. Furthermore, the switch to be disconnected, K1, is virtually set to the open position and considered an open circuit, prohibiting K1 from participating in subsequent topology extension traversal to avoid mistakenly treating K1 as a closed circuit, leading to errors in loop closure determination. Starting from nodes P1 and P2, a topology extension traversal is performed outwards, acquiring the real-time status of the switches along the path during the traversal. The BFS algorithm is used, and the traversal stops upon reaching the 10kV bus.

[0157] Specifically, for node P1, starting from P1, the status of sectionalizing switch K3 (closed) is read in real time, allowing passage, and the process continues to the original supply line L1, eventually reaching the 10kV busbar of substation A. This traversal in this direction stops immediately. For node P2, starting from P2, the status of tie switch K0 (closed) is read in real time, allowing passage, and the process continues to the transfer line L2. Then, the status of switch K2 (closed) is read in real time, allowing passage, and the process eventually reaches the 10kV busbar of substation B. This traversal in this direction stops immediately.

[0158] Ultimately, it was determined that both nodes P1 and P2 on either side of the switch K1 to be disconnected could be independently traversed through topology extension. P1 was connected to the 10kV busbar of substation A, and P2 was connected to the 10kV busbar of substation B. Therefore, it was determined that the current distribution network had truly achieved a successful loop closure, and both sides of the switch K1 to be disconnected had effective power supply paths. Disconnecting K1 would not cause power outages for users, thus generating a loop closure success signal. The tripping operation module received the loop closure success signal, unlocked the tripping permission of switch K1, and allowed the operator to perform the tripping operation. After the operator performed the tripping operation, K1 was in the tripped position.

[0159] In summary, this traversal only covers the paths "P1→K3→Substation A" and "P2→K0→K2→Substation B", without performing a full network traversal, which greatly reduces the amount of computation and keeps the response time within 1 second.

[0160] In abnormal scenarios, if the tie switch K0 appears to be closed (remote signaling shows it's closed), but is not actually closed (auxiliary contact fault), the operator initiates a request to disconnect K1. K1 is then virtually set to open, and a topology extension traversal is performed outwards from nodes P1 and P2. For node P1, the extension can normally reach the 10kV busbar of substation A. For node P2, starting from P2, the status of tie switch K0 (actually open) is read in real-time and considered an open circuit. This traversal immediately terminates, and the extension to the 10kV busbar of substation B cannot be reached. Therefore, the current loop closure is deemed a failure, and the opening operation of K1 is forcibly blocked. K1 is set to closed and considered a closed circuit, and an alarm message pops up: "Loop not closed, switch disconnection prohibited," with the reason being "K0 switch open." This prevents accidental disconnection of K1 from causing a power outage for the original supply line L1 user.

[0161] It can be seen that, in the process of switching power supply, this invention effectively improves the accuracy of the switching operation and reduces the risk of misoperation by performing a successful switching operation determination before performing the switching operation on the target switch.

[0162] Figure 7 This is a schematic diagram of the structure of the distribution network loop-connection power supply control device provided in this application, as shown below. Figure 4 As shown, the power distribution network loop-to-loop power supply control device 70 provided in this embodiment includes:

[0163] Topology acquisition module 701 is used to acquire the distribution network topology model of the distribution network;

[0164] The request response module 702 is used to respond to the user's request to open the target switch, set the switch status of the target switch in the distribution network topology model to open, and place the target switch in the closed loop power supply path in the distribution network topology model;

[0165] The topology extension module 703 is used to perform topology extension traversal to both sides of the closed-loop power supply path, starting from the target switch, to obtain at least one extension path corresponding to each side.

[0166] The tripping determination module 704 verifies whether the conditions for performing a tripping operation on the target switch are met based on at least one extended path corresponding to each side.

[0167] The tripping operation module 705 is used to perform a tripping operation on the target switch if the conditions are met.

[0168] In one possible implementation, the topology extension module 703 is also used to perform topology extension traversal to both sides in the closed-loop power supply path, starting from the target switch, and stop when the traversal reaches the substation bus or a switch in the open state, thus obtaining the corresponding extension path.

[0169] In one possible implementation, the tripping determination module 704 is further configured to determine that the current conditions for performing a tripping operation on the target switch are met if there is an extension path extending to the substation bus in at least one extension path corresponding to each side; and to determine that the current conditions for performing a tripping operation on the target switch are not met if there is no extension path extending to the substation bus in at least one extension path corresponding to either side.

[0170] In one possible implementation, the topology acquisition module 701 is also used to acquire the static topology of the distribution network; and generate a distribution network topology model based on the static topology of the distribution network and the real-time status data of the distribution network stored in the distribution network automation master station.

[0171] In one possible implementation, the topology acquisition module 701 is also used to construct the static topology of the distribution network based on the GIS and / or PMS corresponding to the distribution network.

[0172] In one possible implementation, the power distribution network loop-connection control device further includes:

[0173] The recovery module is used to restore the target switch's switch state to closed if the current conditions for performing a tripping operation on the target switch are not met.

[0174] The display module is used to display alarm information through a human-machine interface. The alarm information is used to remind the user that the loop-closing operation was not performed on the loop-closing power supply path.

[0175] The distribution network loop-to-power supply device provided in this application embodiment can execute the method provided in the above method embodiment. Its implementation principle and technical effect are similar, and will not be described in detail here.

[0176] Figure 8 A schematic diagram of the structure of the electronic device provided in this application. Figure 8 As shown, the electronic device 80 provided in this embodiment includes at least one processor 801 and a memory 802. Optionally, the electronic device 80 further includes a communication component 803. The processor 801, memory 802, and communication component 803 are connected via a bus 804.

[0177] In a specific implementation, at least one processor 801 executes computer execution instructions stored in memory 802, causing at least one processor 801 to perform the above-described method.

[0178] The specific implementation process of processor 801 can be found in the above method embodiments, and its implementation principle and technical effect are similar. It will not be repeated here.

[0179] In the above embodiments, it should be understood that the processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), etc. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in this invention can be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules within the processor.

[0180] The memory may include random access memory (RAM) and may also include non-volatile memory (NVM), such as at least one disk storage device.

[0181] The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of illustration, the buses shown in the accompanying drawings are not limited to a single bus or a single type of bus.

[0182] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the above-described method.

[0183] This application also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the above-described method.

[0184] The aforementioned readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as Static Random-Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Programmable Read-Only Memory (PROM), Read-Only Memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The readable storage medium can be any available medium accessible to a general-purpose or special-purpose computer.

[0185] An exemplary readable storage medium is coupled to a processor, enabling the processor to read information from and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can reside in an application-specific integrated circuit (ASIC). Alternatively, the processor and the readable storage medium can exist as discrete components in the device.

[0186] The division of units is merely a logical functional division; in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0187] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0188] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0189] If a function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, ROM, RAM, magnetic disks, or optical disks.

[0190] Those skilled in the art will understand that all or part of the steps of the above-described method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0191] Figure 9 This is a schematic diagram of the power supply control system for the distribution network loop-to-loop operation provided in this application. Figure 9 As shown, the power distribution network loop-to-loop power supply control system 90 provided in this embodiment includes: electronic equipment 80, power distribution network automation master station 902, geographic information system 903 and production management system 904.

[0192] Among them, the electronic equipment 80 communicates with the power distribution automation master station 902, the geographic information system 903 and the production management system 904 respectively.

[0193] In practical applications, the electronic device 80 can be integrated into any system within the distribution network automation master station 902, geographic information system 903, and production management system 904, and set up as an integrated functional module; or it can be deployed independently and operate as a complete functional unit.

[0194] The specific implementation process of the electronic device 80 can be found in the above method embodiments, and its implementation principle and technical effect are similar. Therefore, it will not be repeated here.

[0195] Finally, it should be noted that other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A method for controlling the closed-loop power supply of a distribution network, characterized in that, include: Obtain the distribution network topology model; In response to a user's request to trip the target switch, the switch status of the target switch in the distribution network topology model is set to open, and the target switch is in the closed-loop power supply path in the distribution network topology model; Starting from the target switch, a topological extension traversal is performed in both directions in the closed-loop power supply path to obtain at least one extension path corresponding to each side. Based on at least one extension path corresponding to each side, verify whether the conditions for performing a tripping operation on the target switch are currently met. If the conditions are met, the tripping operation is performed on the target switch.

2. The method according to claim 1, characterized in that, Starting from the target switch, the topological extension traversal is performed to both sides of the closed-loop power supply path to obtain at least one extension path corresponding to each side, including: Starting from the target switch, the topology is extended to both sides in the closed-loop power supply path, and the process stops when the substation busbar or a switch in an open state is reached, thus obtaining the corresponding extension path.

3. The method according to claim 2, characterized in that, The step of verifying whether the conditions for performing a tripping operation on the target switch are met based on at least one extension path corresponding to each side includes: If at least one of the corresponding extension paths on each side has an extension path extending to the substation busbar, then it is determined that the current condition for performing the tripping operation on the target switch is met. If there is no extension path extending to the substation busbar in at least one of the corresponding extension paths on either side, then it is determined that the conditions for performing the tripping operation on the target switch are not currently met.

4. The method according to any one of claims 1-3, characterized in that, The process of obtaining the distribution network topology model includes: Obtain the static topology of the power distribution network; The distribution network topology model is generated based on the static topology of the distribution network and the real-time status data of the distribution network stored in the distribution network automation master station.

5. The method according to claim 4, characterized in that, The process of obtaining the static topology of the distribution network includes: Based on the geographic information system (GIS) and / or production management system (PMS) corresponding to the power distribution network, construct the static topology of the power distribution network.

6. The method according to any one of claims 1-3 and 5, characterized in that, The method further includes: If the conditions for performing the tripping operation on the target switch are not met, then the tripping operation on the target switch is not performed, and the switch state of the target switch in the distribution network topology model is restored to closed. Alarm information is displayed through a human-computer interaction interface. The alarm information is used to remind the user that the loop-closing operation was not performed on the loop-closing power supply path.

7. A power distribution network loop-connection control device, characterized in that, include: The topology acquisition module is used to acquire the distribution network topology model of the distribution network; The request response module is used to respond to a user's request to open the target switch, and to set the switch status of the target switch in the distribution network topology model to open, wherein the target switch is in the closed-loop power supply path in the distribution network topology model; The topology extension module is used to perform topology extension traversal to both sides of the closed-loop power supply path, starting from the target switch, to obtain at least one extension path corresponding to each side. The tripping determination module verifies whether the conditions for performing a tripping operation on the target switch are met based on at least one extended path corresponding to each side. The tripping operation module is used to perform the tripping operation on the target switch if the conditions are met.

8. An electronic device, characterized in that, include: Memory and processor; The memory stores computer-executed instructions; The processor executes computer execution instructions stored in the memory, causing the processor to perform the method as described in any one of claims 1-6.

9. A power distribution network loop-loop power supply control system, characterized in that, include: Electronic equipment, power distribution automation master station, geographic information system (GIS), and production management system (PMS); The electronic device is used to perform the method as described in any one of claims 1-6.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the method as described in any one of claims 1-6.

Images