Method for constructing network topology structure of power grid system and related equipment

Abstract

The invention provides a power grid system network topology construction method and related equipment. The method comprises the following steps: determining composition structures of a power grid system, entities of different composition structures and entity attributes; determining a connection relationship between the entity and the entity attribute corresponding to the entity, and determining the connection attribute of the connection relationship; wherein the connection attribute represents description of the connection relation; taking the entity and the entity attribute corresponding to the entity as nodes, uniformly arranging the nodes, taking the connection relation as an edge, adding the connection attribute to the edge, and determining a first topological graph of different composition structures; and determining connection nodes among the different composition structures and connection relationships among the connection nodes, and combining the first topological graph according to the connection relationships to form the network topology of the power grid system. According to the method, a power grid system is divided into different composition structures, topological graphs are established for the different composition structures, and finally integration is performed to realize visual display of the network topology of the power grid system.

Description

Technical Field

[0001] The present application relates to the technical field of power grid system management, and in particular to a method for constructing a network topology of a power grid system and related equipment. Background Art

[0002] As a whole, the power grid needs to be coordinated and dispatched uniformly in terms of its operating characteristics. With the increasing investment in power generation and storage equipment, the continuous improvement of protection devices for the safety and stability of the transmission network, the increasing number of demand response loads connected to the distribution network, the increasing popularity of electric vehicles and their charging piles, and the increasing coverage of data acquisition devices such as smart meters and remote measurement and control terminals, the scale of the power grid in the region is constantly expanding, the operation mode is becoming more and more complex, and the connection and coupling between the transmission and distribution networks are becoming closer. The existing independent operation mode of the transmission and distribution network automation system can no longer fully meet the development requirements of the future regional power grid operation, management, dispatch and other businesses. Therefore, integrated grid management is needed to achieve the business integration of the transmission and distribution network.

[0003] At present, relational databases are almost always used in information management systems of electric power enterprises. However, the query speed of relational databases drops sharply as the number of associations increases, and the efficiency in recursive queries and multi-table association queries is also extremely low. With the advent of the big data era, traditional relational databases have gradually revealed their limitations when dealing with complex data modeling requirements. Summary of the invention

[0004] In view of this, the purpose of the present application is to propose a method for constructing a network topology of a power grid system and related equipment that overcomes the above problems or at least partially solves the above problems.

[0005] Based on the above purpose, the first aspect of the present application provides a method for constructing a network topology of a power grid system, comprising:

[0006] Determine the components and structures of the power grid system, and the entities and entity attributes of different components and structures;

[0007] Determine a connection relationship between the entity and the entity attribute corresponding to the entity, and determine a connection attribute of the connection relationship; wherein the connection attribute represents a description of the connection relationship;

[0008] Taking the entities and the entity attributes corresponding to the entities as nodes, evenly arranging the nodes, taking the connection relationships as edges, adding the connection attributes to the edges, and determining first topological graphs of different component structures;

[0009] Determine the connection nodes between the different component structures and the connection relationship between the connection nodes, and combine the first topology diagram according to the connection relationship to form a network topology of the power grid system.

[0010] Optionally, the composition structure of the power grid system includes: a power generation side structure, a transmission and transformation side structure, a power distribution medium voltage structure and a power distribution low voltage structure;

[0011] Determine the entities and entity attributes of the different constituent structures, including:

[0012] The power equipment of the power generation side structure, the transmission and transformation side structure, the power distribution medium voltage structure and the power distribution low voltage structure are respectively determined as entities;

[0013] The operation data and parameter information of the entity are determined as the entity attributes.

[0014] Optionally, the connection relationship includes a subordinate relationship, an out-degree relationship and an in-degree relationship;

[0015] Determining a connection relationship between the entity and the entity attribute corresponding to the entity includes:

[0016] Determine feeders and current flow between the entities;

[0017] Determine the out-degree relationship and the in-degree relationship between the entities according to the feeder and the current direction;

[0018] A subordinate relationship between the entity and the corresponding entity attribute is determined according to the entity and the corresponding entity attribute.

[0019] Optionally, taking the entities and the entity attributes as nodes, taking the connection relationships as edges, adding the connection attributes to the edges, and determining first topological graphs of different component structures; comprising:

[0020] Determine the entity and the entity attribute corresponding to the entity as a node;

[0021] respectively determining feeder load data and entity load data between different entities;

[0022] Determine the load nodes;

[0023] Using the load nodes to record the feeder load data and the entity load data respectively;

[0024] Determine the subordinate relationship between the entity and the corresponding entity attribute and the out-degree relationship and in-degree relationship between the entities as edges;

[0025] The nodes and the load nodes are connected using the edges to form the first topological graph.

[0026] Optionally, the edges are used to realize connections between the entities and between the entities and corresponding entity attributes to form a first topological graph, including:

[0027] In response to the out-degree number of the entity being less than a preset threshold, the entity is displayed in the form of the edge in a first state;

[0028] In the second state, the entity is displayed in the form of a node, wherein the second state is an enlarged state of the first state.

[0029] Optionally, determining the subordinate relationship between the entity and the corresponding entity attribute and the out-degree relationship and in-degree relationship between the entities as edges includes:

[0030] In response to the existence of a loop power supply form in any of the entities, the entity, as a node, has an edge starting from itself and pointing to itself.

[0031] Optionally, the method further includes:

[0032] Establish a time series database;

[0033] Determining a mapping relationship between a time point and the network topology;

[0034] Storing the mapping relationship in the time series database;

[0035] Determine the timing changes at the time point,

[0036] According to the mapping relationship and the time sequence change, a time evolution graph of the network topology structure is determined.

[0037] In a second aspect of the present application, a power grid system network topology construction device is provided, comprising:

[0038] An entity module, used to determine the component structure of the power grid system, and the entities and entity attributes of different component structures;

[0039] A relationship module, used to determine a connection relationship between the entity and the entity attribute corresponding to the entity, and determine a connection attribute of the connection relationship; wherein the connection attribute represents a description of the connection relationship;

[0040] Establishing a module, for taking the entities and the entity attributes corresponding to the entities as nodes, evenly arranging the nodes, taking the connection relationships as edges, adding the connection attributes to the edges, and determining a first topological graph of different component structures;

[0041] The topology module is used to determine the connection nodes between the different component structures and the connection relationship between the connection nodes, and to combine the first topology diagram according to the connection relationship to form a network topology of the power grid system.

[0042] According to a third aspect of the present application, an electronic device is provided, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the method described in the first aspect when executing the program.

[0043] A fourth aspect of the present application provides a non-transitory computer-readable storage medium, wherein the non-transitory computer-readable storage medium stores computer instructions, wherein the computer instructions are used to enable a computer to execute the method described in the first aspect.

[0044] From the above, it can be seen that the power grid system network topology construction method and related equipment provided by the present application can realize a high-precision description of the power grid system network topology diagram by dividing the power grid system into different component structures, using entities and entity attributes as nodes, connection relationships as edges, and adding connection attributes to the edges. The network topology diagram formed can directly visualize the power grid system, and in the process of searching or querying the corresponding entity or entity attribute, intuitively display the connection relationship and specific description between the entity or entity attribute and other related entities. In the power grid topology search task scenario, with the continuous expansion of the scale of the power grid system and the increasing complexity of equipment connections, especially when dealing with the topology data search and analysis of large-scale complex power networks, the retrieval speed can be significantly improved, which can not only quickly provide infrastructure information for online simulation, calculation and analysis of the power grid system, but also provide effective support when power equipment fails.

[0045] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the present application or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0047] Figure 1 A flow chart of a method 100 for constructing a network topology of a power grid system according to an embodiment of the present application;

[0048] Figure 2 A schematic diagram of a first topological diagram of a power generation side structure according to an embodiment of the present application;

[0049] Figure 3 A schematic diagram of a first topology diagram of the transmission-transformer side structure of an embodiment of the present application;

[0050] Figure 4 A schematic diagram of a first topology diagram of a medium voltage power distribution structure according to an embodiment of the present application;

[0051] Figure 5 A schematic diagram of a first topology diagram of a power distribution low-voltage structure according to an embodiment of the present application;

[0052] Figure 6 A schematic diagram of a network topology of a power grid system according to an embodiment of the present application;

[0053] Figure 7 A network topology diagram of a device management structure according to an embodiment of the present application;

[0054] Figure 8 A schematic diagram of a network topology construction device for a power grid system according to an embodiment of the present application;

[0055] Fig. 9 A schematic diagram of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0056] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0057] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be the usual meanings understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0058] As mentioned in the background technology, the power grid topology analysis function in the related technology is developed based on the structured data of the relational database and the relational, hierarchical or object-based real-time data model based on memory. With the development of intelligent distribution network and the in-depth study of the low-voltage user-side power grid topology model, the granularity of the distribution network is getting finer and the number of equipment models is growing explosively. As the amount of power grid model data increases and the informationization and intelligence of the power grid are promoted, the performance of the original relational database-based or memory-based topology analysis program can no longer meet the large-scale real-time data processing needs, especially in the process of quickly locating the upper and lower relationships of equipment through retrieval equipment and locating the fault area caused by equipment damage.

[0059] Based on this, the present application uses entities and entity and entity attributes as nodes, and connection relationships as edges. Based on the relationship between nodes and edges, the association between data can be directly found without using a traditional relational database. However, the network topology of the entire power grid system is established directly using the relationship between nodes and edges. Due to the huge scale of the power grid system, it is easy to cause omissions and accuracy to directly establish the topology of the entire power grid system, whether for entities or for entity-related data. Therefore, the purpose of this application is to establish an accurate network topology for the power grid system as a whole, and to achieve a visual display of the operation of the power grid system based on the network topology. Based on the generation, transmission, transformation, distribution, and use of the power grid system, the power grid system is divided into different component structures. Using the division of different component structures, topological diagrams are established for different component structures respectively, and finally integrated to achieve a visual display of the network topology of the power grid system.

[0060] In the embodiments of the present application, the relevant terms are first explained:

[0061] A node represents an entity or object. Each node has a unique identifier and can carry attributes in the form of key-value pairs, namely entity attributes, which are used to describe the characteristics or status information of the node.

[0062] Edges can be directed (from one node to another) or undirected. They are used to connect two nodes and can represent the relationship between them. Each edge can have its own attributes, namely connection attributes, which are used to record the specific nature of the connection, timestamps, or other related information. Attributes are key-value pairs attached to edges. For example, in a social network, a node may have attributes such as "name" and "age", and a friend connection attribute may have attributes such as "establishment date".

[0063] In an undirected graph, the number of edges a vertex has is called the degree of the vertex. In a directed graph, the number of edges with a vertex as the head is called the in-degree of the vertex; the number of edges with a vertex as the tail is called the out-degree of the vertex; the sum of the in-degree and out-degree of a vertex is called the degree of the vertex.

[0064] Figure 1 This is a flow chart of a method 100 for constructing a network topology of a power grid system according to an embodiment of the present application, which begins with step S101, determining the composition structure of the power grid system, as well as the entities and entity attributes of different composition structures. In the embodiment of the present application, the entity includes at least power equipment. As mentioned above, the network topology diagrams are established for different composition structures respectively by utilizing the division of different composition structures. First, the entities in each composition structure are determined, and the entities in each composition structure are identified and defined. The entities include at least power equipment, and each entity has attributes, such as the model and status of the equipment. Each entity includes at least one unique entity attribute. In the embodiment of the present application, the entity attributes include at least the model of the entity.

[0065] In some embodiments, reference Figures 2 to 5 As shown in the figure, the composition structure of the power grid system includes the power generation side structure, the transmission and transformation side structure, the distribution medium voltage structure and the distribution low voltage structure. Among them, the power generation side structure is used to refer to the "generation" link of the power grid system, the transmission and transformation side structure is used to refer to the "transmission" link of the power grid system, the distribution medium voltage structure is used to refer to the "distribution" link of the power grid system, and the distribution low voltage structure is used to refer to the "use" link of the power grid system, so that different composition structures cover the entire power grid system.

[0066] Step S101 includes: respectively determining the power equipment of the power generation side structure, the transmission and transformation side structure, the power distribution medium voltage structure and the power distribution low voltage structure as entities.

[0067] The operation data and parameter information of the entity are determined as the entity attributes.

[0068] refer to Figure 2 As shown, the entities of the power generation side structure include primary energy and generators, where the entity attributes of primary energy include parameters, state, type, sustainable energy, non-sustainable energy, conversion efficiency and other characteristics, where sustainable energy can be subdivided into wind energy, hydropower, solar energy, etc., and non-sustainable energy includes coal, oil, natural gas, etc. As power generation energy, sustainable energy and non-sustainable energy, in addition to power generation, also need to consider the supply and demand balance caused by environmental factors. For example, solar power generation is limited at night, but electricity consumption increases at night, so different entity attributes need to be considered at the same time.

[0069] refer to Figure 3As shown, the entities of the transmission and transformation side structure include substation, T-type terminal, transmission line short, T-type connection, AC filter, SVG, transmission transformer, grounding switch, circuit breaker, busbar, switch, main transformer, shunt capacitor, reactor, SVC and TV, etc.

[0070] refer to Figure 4 As shown, the entities of the medium-voltage distribution structure include distribution network switches, distribution network busbars, distribution network fuses, cable terminals, distribution network switches, distribution network transformers, cable segments, distribution network grounding switches and compensators.

[0071] refer to Figure 5 As shown, the entities of the low-voltage distribution structure include users, electric vehicles, smart meters, RTUs, distributed energy storage, distributed energy, distributed generation and inverters.

[0072] Then in step 102, the connection relationship between the entity and the entity attribute corresponding to the entity is determined, and the connection attribute of the connection relationship is determined; wherein the connection attribute represents the description of the connection relationship.

[0073] In the embodiment of the present application, the connection relationship includes a subordinate relationship, an out-degree relationship and an in-degree relationship. A subordinate relationship indicates dependency and attachment. For example, an entity attribute is in a subordinate relationship with an entity. A connection attribute describes the connection relationship, for example, "installed in", "occurred", "voltage level is", which indicates a specific connection relationship description between two entities.

[0074] In some embodiments, step S102 includes:

[0075] Determine the feeders between entities and the flow of current.

[0076] The out-degree relationship and in-degree relationship between entities are determined according to the feeder and current direction.

[0077] The subordinate relationship between the entity and the corresponding entity attribute is determined according to the entity and the corresponding entity attribute.

[0078] Then in step S103, entities and entity attributes corresponding to the entities are used as nodes, connection relationships are used as edges, and connection attributes are added to the edges to determine a first topological graph of different component structures.

[0079] In this embodiment, a topological diagram is formed through the relationship between nodes and edges to visualize entities, entity attributes and the connection relationships therein. At the same time, connection attributes are added to edges to intuitively display the specific description of the connection relationship between the corresponding entity or entity attribute and other related entities during the retrieval or query process.

[0080] In some embodiments, step S103 includes:

[0081] Entities and entity attributes corresponding to the entities are identified as nodes.

[0082] The feeder load data between different entities and the entity load data are determined separately.

[0083] Use load nodes to record feeder load data and entity load data respectively.

[0084] Determine the subordinate relationships between entities and corresponding entity attributes as well as the out-degree relationships and in-degree relationships between entities as edges.

[0085] The nodes and load nodes are connected by edges to form a first topological graph.

[0086] In this embodiment, after the first topological diagram is formed by using entity attributes as nodes, it is directly visualized in the form of nodes. In the corresponding search or query process, it is not necessary to traverse all nodes, and the relevant information of the corresponding entity corresponding to the node can be directly retrieved or queried, which improves the query and retrieval efficiency and makes equipment maintenance faster in the power grid system. If the entity attribute does not exist in the form of a node, then in the query process, the corresponding query instruction is input, and all nodes need to be traversed, and then the relevant information of the node is compared with the query instruction to obtain the query result.

[0087] At the same time, in the embodiment of the present application, the feeder represents the transmission line between different entities, and the load node is used to record the feeder load data between the entities. By recording the feeder load data, the load on the transmission line can be fed back in real time, and the balance of power supply and demand can be achieved by using the record of the load node. Figure 3 The substation load in is the load node. Figure 5 The remote terminal unit (RTU / FRTU) at the feeder end acts as a load node to record the operating data on the feeder. The first topology diagram formed by different component structures is as follows: Figures 2 to 5 shown.

[0088] Through the load data on different feeders fed back by the load nodes, the fault area caused by equipment damage can be accurately located. For example, if the load data on any feeder is 0, it can be determined that the current feeder is no longer transmitting power, thereby locating the feeder fault. If the load data on any feeder is significantly increased compared to the history, it can be preliminarily located that there is power theft on the feeder or that the entities at both ends of the feeder have failed. Similarly, if the load data of any entity is abnormal, such as a significant increase, it can be located that the current entity has failed.

[0089] In some embodiments, reference Figure 3As shown in the figure, in the transmission and transformation side structure, the connection relationship between different stations can be determined by the representation of the transmission line short and T-type terminal. If the two stations are at the two ends of the feeder, the two stations are directly connected through a feeder. If the two stations are not at the two ends of the feeder, they are connected to the feeder through a T-type connection to achieve an accurate display of the topological structure between stations.

[0090] In some embodiments, using edges to realize connections between entities and between entities and corresponding entity attributes to form a first topological graph includes:

[0091] In response to the out-degree number of the entity being less than a preset threshold, the entity is displayed as an edge in a first state;

[0092] In the second state, the entity is displayed in the form of a node, wherein the second state is an enlarged state of the first state.

[0093] In the embodiment of the present application, although the network topology of the power grid is accurately described by dividing the power grid system into different components, due to the complex structure of the power grid and the large number of devices, in the visualization process, directly treating all entities and entity attributes as nodes means a large number of nodes, and treating connection relationships as edges means a large number of edges. The first topology diagram formed will also affect the visualization effect. In order to clearly display the visualization effect, redundancy must be removed. Each entity or entity attribute as a node is a component of the power grid system, and no node can be discarded to remove redundancy. Therefore, while dividing the power grid system into different components, the number of out-degrees of the entity is used as a threshold, and different real effects are used instead in different states.

[0094] Exemplarily, the preset threshold is 2. When the number of out-degrees of the entity is less than 2, that is, the entity is a vertex as a node, and the number of edges with the vertex as the head is less than 2, then in the first state, the entity is displayed in the form of an edge. In the second state, the entity is displayed in the form of a node, and the second state is an enlarged state of the first state. It should be noted that the first state is the normal size display state of the first topological graph.

[0095] That is, in the normal visualization state, entities with out-degrees less than the preset threshold are displayed as edges, and in the zoomed-in state, entities with out-degrees less than the preset threshold are displayed as nodes. In the same display state, the fewer the number of nodes, the fewer the number of edges, which improves the visualization effect of the first topology graph. At the same time, while retaining all entities and entity attributes as nodes, an effective visualization display of the first topology graph is achieved.

[0096] It is understandable that when there are more grid devices, it can be further set as follows:

[0097] In response to the out-degree number of the entity being less than a first preset threshold, the entity is displayed in the form of the edge in a first state;

[0098] In response to the out-degree number of the entity being less than a first preset threshold and greater than a second preset threshold, the entity is displayed in the form of a node in the second state;

[0099] In response to the out-degree number of the entity being less than or equal to a second threshold, the entity is displayed in the form of a node in a third state; wherein the third state is an enlarged state of the second state, and the second state is an enlarged state of the first state.

[0100] That is to say, in the normal visualization state, entities whose out-degree number is less than the first preset threshold are displayed as edges, in the first zoom-in state, entities whose out-degree number is less than the first preset threshold and greater than the second preset threshold are displayed as nodes, and in the second zoom-in state, entities whose out-degree number is less than or equal to the second preset threshold are displayed as nodes.

[0101] It should be noted that the present application is different from the related art that uses the geographical coordinates of the power equipment as the basis of the topological map, directly maps the geographical coordinates to a two-dimensional plane or a three-dimensional space to form a topological map, and the formed topological map has overlapping lines, which is not easy to visualize the topological map, and it is also not easy to troubleshoot the power equipment replaced by the nodes in the topological map. In the present application, the nodes are evenly distributed to avoid overlapping edges between nodes, which is conducive to the visualization of the first topological map and helps to troubleshoot the power equipment.

[0102] In some embodiments, if any entity has a loop power supply, the entity, as a node, has an edge starting from itself and pointing to itself.

[0103] refer to Figure 4 As shown, in the power distribution structure, there will be a "hand-in-hand" type of ring network power supply, which means that there are two or more feedback lines in different substations or the same substation, which are connected to each other into a loop for power supply. After the line realizes the "hand-in-hand" type of ring network power supply, it can improve the problem of insufficient power supply from a single power source, reasonably distribute the power load, shorten the power supply radius, and improve the voltage quality. When a part fails, the faulty part can be isolated and power can be supplied normally to the non-faulty sections from both sides. By treating the entity as a node with an edge starting from itself and pointing to itself, the power supply form can be effectively judged from the topology map. After locating the fault through the first topology map, the fault isolation can be quickly realized, and power can be supplied normally to the non-faulty sections from both sides.

[0104] Then, in step S104, the connection nodes between the different component structures and the connection relationship between the connection nodes are determined, and the first topology diagram is combined according to the connection relationship to form a network topology of the power grid system.

[0105] refer to Figure 6 It should be noted that for different structures of the power grid system, existing entities can be used as connection nodes, and connection nodes can also be established separately, which is not specifically limited here.

[0106] In this embodiment, reference Figure 2 As shown in the figure, in the power generation side structure, the generator node is used as the connection node. Figure 3 As shown, in the transmission and transformation side structure, a separate connection node is established.

[0107] Finally, the connection relationship between the connection nodes in different component structures is determined according to the connection of different links of the power grid system, and the first topology diagram is combined to form the network topology of the power grid system.

[0108] In some embodiments, it further includes: establishing a time series database;

[0109] Determining a mapping relationship between a time point and the network topology;

[0110] Storing the mapping relationship in the time series database;

[0111] Determine the timing changes at the time point,

[0112] According to the mapping relationship and the time sequence change, a time evolution graph of the network topology structure is determined.

[0113] In this embodiment, through the mapping relationship between time points and network topology, a network topology diagram of the power grid system corresponding to the time point can be displayed at each time point, and the situation of the power equipment at the time point can be displayed through the network topology diagram. According to the mapping relationship, under the time series change, the time evolution diagram of the network topology structure can be reflected from the continuous time axis, showing the time series change of the entity represented by each node. At the same time, through the network topology analysis of each historical time point or time period, load forecasting, operation analysis, distributed energy optimization, etc. can be achieved. At the same time, it can reflect the dynamic changes such as failures of the power grid system.

[0114] It is understandable that since the network topology is essentially a collection of nodes and edges, the mapping relationship between time points and network topology is essentially a mapping relationship between time and nodes and edges. To store the mapping relationship in a time series database, only two data types, nodes and edges, need to be stored. Time series databases are different from other databases. Through indexing time (time point or time range), they cover the analysis and processing functions of power equipment operation data at time points, including storage and compression of various power equipment operation data under time series changes, full life cycle management, aggregation, scanning and query of power equipment operation data under large-scale time series, etc.

[0115] In some embodiments, reference Figure 7 As shown, all the power equipment in the power grid system is directly taken as entities, the entity attributes are determined, the entities and entity attributes are taken as nodes, the connection relationships are taken as edges, the connection attributes are added to the edges, and the network topology of the power grid system is determined.

[0116] It should be noted that the method of the embodiment of the present application can be performed by a single device, such as a computer or server. The method of this embodiment can also be applied to a distributed scenario and completed by multiple devices cooperating with each other. In the case of such a distributed scenario, one of the multiple devices can only perform one or more steps in the method of the embodiment of the present application, and the multiple devices will interact with each other to complete the described method.

[0117] It should be noted that the above describes some embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the above embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0118] Based on the same technical concept, corresponding to any of the above-mentioned embodiment methods, the present application also provides a power grid system network topology construction device.

[0119] refer to Figure 8 , the power grid system network topology construction device comprises:

[0120] An entity module, used to determine the component structure of the power grid system, and the entities and entity attributes of different component structures;

[0121] A relationship module, used to determine a connection relationship between the entity and the entity attribute corresponding to the entity, and determine a connection attribute of the connection relationship; wherein the connection attribute represents a description of the connection relationship;

[0122] Establishing a module, for taking the entities and the entity attributes corresponding to the entities as nodes, evenly arranging the nodes, taking the connection relationships as edges, adding the connection attributes to the edges, and determining a first topological graph of different component structures;

[0123] The topology module is used to determine the connection nodes between the different component structures and the connection relationship between the connection nodes, and to combine the first topology diagram according to the connection relationship to form a network topology of the power grid system.

[0124] For the convenience of description, the above device is described in terms of functions divided into various modules. Of course, when implementing the present application, the functions of each module can be implemented in the same or multiple software and / or hardware.

[0125] The device of the above embodiment is used to implement the corresponding power grid system network topology construction method in any of the above embodiments, and has the beneficial effects of the corresponding method embodiment, which will not be repeated here.

[0126] Based on the same technical concept, corresponding to any of the above-mentioned embodiments, the present application also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the method for constructing a network topology of a power grid system described in any of the above embodiments is implemented.

[0127] Fig. 9 A more specific schematic diagram of the hardware structure of an electronic device provided in this embodiment is shown, and the device may include: a processor 1010, a memory 1020, an input / output interface 1030, a communication interface 1040, and a bus 1050. The processor 1010, the memory 1020, the input / output interface 1030, and the communication interface 1040 are connected to each other through the bus 1050 in the device.

[0128] The processor 1010 can be implemented by a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of this specification.

[0129] The memory 1020 may be implemented in the form of ROM (Read Only Memory), RAM (Random Access Memory), static storage device, dynamic storage device, etc. The memory 1020 may store an operating system and other application programs. When the technical solutions provided in the embodiments of this specification are implemented by software or firmware, the relevant program codes are stored in the memory 1020 and are called and executed by the processor 1010.

[0130] The input / output interface 1030 is used to connect the input / output module to realize information input and output. The input / output module can be configured in the device as a component (not shown in the figure), or it can be externally connected to the device to provide corresponding functions. The input device may include a keyboard, a mouse, a touch screen, a microphone, various sensors, etc., and the output device may include a display, a speaker, a vibrator, an indicator light, etc.

[0131] The communication interface 1040 is used to connect a communication module (not shown) to realize communication interaction between the device and other devices. The communication module can realize communication through a wired mode (such as USB, network cable, etc.) or a wireless mode (such as mobile network, WIFI, Bluetooth, etc.).

[0132] The bus 1050 includes a path that transmits information between the various components of the device (eg, the processor 1010, the memory 1020, the input / output interface 1030, and the communication interface 1040).

[0133] It should be noted that, although the above device only shows the processor 1010, the memory 1020, the input / output interface 1030, the communication interface 1040 and the bus 1050, in the specific implementation process, the device may also include other components necessary for normal operation. In addition, it can be understood by those skilled in the art that the above device may also only include the components necessary for implementing the embodiments of the present specification, and does not necessarily include all the components shown in the figure.

[0134] The electronic device of the above-mentioned embodiment is used to implement the corresponding power grid system network topology construction method in any of the above-mentioned embodiments, and has the beneficial effects of the corresponding method embodiment, which will not be repeated here.

[0135] Based on the same technical concept, corresponding to any of the above-mentioned embodiment methods, the present application also provides a non-transitory computer-readable storage medium, wherein the non-transitory computer-readable storage medium stores computer instructions, and the computer instructions are used to enable the computer to execute the power grid system network topology construction method as described in any of the above embodiments.

[0136] The computer-readable medium of this embodiment includes permanent and non-permanent, removable and non-removable media, and information storage can be implemented by any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, read-only compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device.

[0137] The computer instructions stored in the storage medium of the above embodiment are used to enable the computer to execute the power grid system network topology construction method as described in any of the above embodiments, and have the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0138] Based on the same inventive concept, corresponding to the method for constructing a network topology of a power grid system described in any of the above embodiments, the present disclosure also provides a computer program product, which includes computer program instructions. In some embodiments, the computer program instructions can be executed by one or more processors of a computer so that the computer and / or the processor execute the method for constructing a network topology of a power grid system. Corresponding to the execution subject corresponding to each step in each embodiment of the method for constructing a network topology of a power grid system, the processor that executes the corresponding step may belong to the corresponding execution subject.

[0139] The computer program product of the above embodiment is used to enable the computer and / or the processor to execute the power grid system network topology construction method as described in any of the above embodiments, and has the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0140] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application (including the claims) is limited to these examples. In line with the concept of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0141] In addition, to simplify the description and discussion, and in order not to make the embodiments of the present application difficult to understand, the known power supply / ground connection with the integrated circuit (IC) chip and other components may or may not be shown in the provided drawings. In addition, the device can be shown in the form of a block diagram to avoid making the embodiments of the present application difficult to understand, and this also takes into account the fact that the details of the implementation of these block diagram devices are highly dependent on the platform to be implemented in the embodiments of the present application (that is, these details should be fully within the scope of understanding of those skilled in the art). In the case of elaborating specific details (e.g., circuits) to describe exemplary embodiments of the present application, it is obvious to those skilled in the art that the embodiments of the present application can be implemented without these specific details or when these specific details are changed. Therefore, these descriptions should be considered to be illustrative rather than restrictive.

[0142] Although the present application has been described in conjunction with specific embodiments of the present application, many replacements, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may use the embodiments discussed.

[0143] The embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of the present application.

Claims

1. A method for constructing a network topology of a power grid system, characterized in that: include: Determine the components and structures of the power grid system, and the entities and entity attributes of different components and structures; Determine a connection relationship between the entity and the entity attribute corresponding to the entity, and determine a connection attribute of the connection relationship; wherein the connection attribute represents a description of the connection relationship; Taking the entities and the entity attributes corresponding to the entities as nodes, evenly arranging the nodes, taking the connection relationships as edges, adding the connection attributes to the edges, and determining first topological graphs of different component structures; Determine the connection nodes between the different component structures and the connection relationship between the connection nodes, and combine the first topology diagram according to the connection relationship to form a network topology of the power grid system.

2. The method according to claim 1, characterized in that: The composition structure of the power grid system includes: a power generation side structure, a transmission and transformation side structure, a power distribution medium voltage structure and a power distribution low voltage structure; Determine the entities and entity attributes of the different component structures, including: The power equipment of the power generation side structure, the transmission and transformation side structure, the power distribution medium voltage structure and the power distribution low voltage structure are respectively determined as entities; The operation data and parameter information of the entity are determined as the entity attributes.

3. The method according to claim 2, characterized in that The connection relationship includes a subordinate relationship, an out-degree relationship and an in-degree relationship; Determining a connection relationship between the entity and the entity attribute corresponding to the entity includes: Determine feeders and current flow between the entities; Determine the out-degree relationship and the in-degree relationship between the entities according to the feeder and the current direction; A subordinate relationship between the entity and the corresponding entity attribute is determined according to the entity and the corresponding entity attribute.

4. The method according to claim 3, characterized in that Taking the entities and the entity attributes as nodes, taking the connection relationships as edges, adding the connection attributes to the edges, and determining first topological graphs of different component structures; comprising: Determine the entity and the entity attribute corresponding to the entity as a node; respectively determining feeder load data and entity load data between different entities; Determine the load nodes; Using the load nodes to record the feeder load data and the entity load data respectively; Determine the subordinate relationship between the entity and the corresponding entity attribute and the out-degree relationship and in-degree relationship between the entities as edges; The nodes and the load nodes are connected using the edges to form the first topological graph.

5. The method according to claim 4, characterized in that The edges are used to realize connections between the entities and between the entities and corresponding entity attributes to form a first topological graph, including: In response to the out-degree number of the entity being less than a preset threshold, the entity is displayed in the form of the edge in a first state; In the second state, the entity is displayed in the form of a node, wherein the second state is an enlarged state of the first state.

6. The method according to claim 3, characterized in that: Determining the subordinate relationship between the entity and the corresponding entity attribute and the out-degree relationship and in-degree relationship between the entities as edges, including: In response to the existence of a loop power supply form in any of the entities, the entity, as a node, has an edge starting from itself and pointing to itself.

7. The method according to claim 1, characterized in that The method further comprises: Establish a time series database; Determining a mapping relationship between a time point and the network topology; Storing the mapping relationship in the time series database; Determine the timing changes at the time point, According to the mapping relationship and the time sequence change, a time evolution graph of the network topology structure is determined.

8. A network topology construction device for a power grid system, characterized in that: include: An entity module, used to determine the component structure of the power grid system, and the entities and entity attributes of different component structures; A relationship module, used to determine a connection relationship between the entity and the entity attribute corresponding to the entity, and determine a connection attribute of the connection relationship; wherein the connection attribute represents a description of the connection relationship; Establishing a module, for taking the entities and the entity attributes corresponding to the entities as nodes, evenly arranging the nodes, taking the connection relationships as edges, adding the connection attributes to the edges, and determining a first topological graph of different component structures; The topology module is used to determine the connection nodes between the different component structures and the connection relationship between the connection nodes, and to combine the first topology diagram according to the connection relationship to form a network topology of the power grid system.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the method according to any one of claims 1 to 7 is implemented.

10. A non-transitory computer-readable storage medium storing computer instructions, characterized in that: The computer instructions are used to enable a computer to execute the method according to any one of claims 1 to 7.

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