Quantitative evaluation method for distribution network carrying capacity and distribution network management system

Abstract

The present application provides a distribution network carrying capacity quantitative evaluation method and a distribution network management system, which relate to data processing technology. The method obtains a request for a new function node through a first function node in a function node set, and sends the request for the new function node to a management server, and then the management server generates a new function virtual node according to the new location information, and updates the distribution network topology structure according to the new function virtual node, and the management server determines a set of working condition parameters of the new function node according to the new function node information, and uses each working condition parameter in the set of working condition parameters of the new function node to perform a simulated pressure quantitative test on the updated distribution network topology structure, so as to determine the working status of each function node and transmission line in the updated distribution network topology structure, so as to determine the carrying capacity state of the distribution network topology structure, so as to realize the functions of early warning and risk prevention and control, thereby avoiding potential safety risks.

Description

Technical Field

[0001] The present application relates to data processing technology, and in particular to a distribution network carrying capacity quantitative evaluation method and a distribution network management system. Background Art

[0002] In recent years, with the popularization of new energy vehicles and the large-scale access of distributed power sources, the structure and load characteristics of distribution networks have changed significantly, which has put higher requirements on the carrying capacity of distribution networks.

[0003] Traditional methods for evaluating the carrying capacity of distribution networks mostly rely on empirical formulas and simple calculations, which are difficult to accurately reflect the actual operating status of distribution networks under complex working conditions. Especially when new functional nodes (such as car charging piles, distributed power sources, etc.) are connected, how to quickly and accurately evaluate the carrying capacity of the distribution network has become an urgent problem to be solved. Summary of the invention

[0004] The present application provides a method for quantitatively evaluating the carrying capacity of a distribution network, which is used to realize the quantitative evaluation of the carrying capacity of the distribution network, thereby providing early warning and risk prevention and control functions to avoid potential safety risks.

[0005] In a first aspect, the present application provides a method for quantitatively evaluating the carrying capacity of a distribution network, which is applied to a distribution network management system, wherein the distribution network management system includes a management server and a distribution network topology structure, wherein the distribution network topology structure includes a functional node set and a transmission line set, wherein each transmission line in the transmission line set is used to connect two different functional nodes in the functional node set, and the management server is communicatively connected with each functional node in the functional node set; the method includes:

[0006] Obtaining a request for a newly added function node through a first function node in the function node set, and sending the request for a newly added function node to the management server, wherein the request for a newly added function node includes information about the newly added function node and newly added location information;

[0007] The management server generates a newly added functional virtual node according to the newly added location information, and updates the distribution network topology structure according to the newly added functional virtual node to generate an updated distribution network topology structure, wherein the updated distribution network topology structure includes an updated functional node set and an updated transmission line set, each transmission line in the updated transmission line set is used to connect two different functional nodes in the updated transmission line set, and the updated functional node set includes the functional node set and the newly added functional virtual node;

[0008] The management server determines a set of operating condition parameters of the newly added function nodes according to the information of the newly added function nodes, and uses each operating condition parameter in the set of operating condition parameters of the newly added function nodes to perform a simulated pressure quantification test on the updated distribution network topology structure to determine the operating status of each functional node and the transmission line in the updated distribution network topology structure, and generates a working status set;

[0009] The management server determines a carrying capacity state of the distribution network topology structure according to the working state set, and the carrying capacity state is used to indicate a configuration state of the new function node corresponding to the new function node request.

[0010] In the above scheme, a request for a new functional node is obtained through the first functional node in the functional node set and sent to the management server. The management server then automatically generates a new functional virtual node based on the newly added location information and updates the distribution network topology. At the same time, the management server is used to perform a simulated stress quantification test on the updated distribution network topology to accurately evaluate the carrying capacity of the power grid. Through the simulated stress quantification test, the working status of each functional node and transmission line in the updated distribution network topology can be accurately evaluated. This precise quantitative evaluation capability is of great significance for ensuring the safe and stable operation of the power grid. By generating a working status set, managers can intuitively understand the working conditions of each part of the power grid, so as to promptly discover potential problems and take corresponding measures.

[0011] In addition, the above solution can also realize the functions of early warning and risk prevention and control. The management server determines the load-bearing capacity state of the distribution network topology according to the working state set. If it is determined that there is a load-bearing risk state, it means that the configuration of the newly added functional node may have an adverse effect on the stable operation of the power grid. At this time, the management personnel can take measures in advance to adjust and optimize, thereby avoiding potential safety risks.

[0012] Optionally, the management server generates a new function virtual node according to the new location information, and updates the distribution network topology structure according to the new function virtual node to generate an updated distribution network topology structure, including:

[0013] The management server determines a newly added transmission line distance set according to the newly added location information and the selected location information of each to-be-selected function node in the to-be-selected function node set, wherein the newly added transmission line distance set includes the newly added transmission line distances between the newly added location information and the to-be-selected location information of each to-be-selected function node in the to-be-selected function node set;

[0014] If the management server determines that the minimum new transmission line distance in the new transmission line distance set is less than or equal to the preset new transmission line distance threshold, then the candidate function node corresponding to the minimum new transmission line distance is determined as the target function node;

[0015] The management server generates a newly added virtual transmission line according to the newly added location information and the target location information corresponding to the target functional node, wherein the newly added virtual transmission line is used to connect the newly added functional virtual node and the target functional node;

[0016] The management server updates the distribution network topology structure according to the newly added virtual transmission line and the newly added functional virtual node to generate the updated distribution network topology structure.

[0017] In the above scheme, the management server calculates the distance of the new transmission line based on the new location information and the candidate location information of the candidate function node, and can quickly find the candidate function node (i.e., the target function node) closest to the new location. This method avoids blindly searching for connection points in the entire distribution network, thereby improving the efficiency of topology update.

[0018] After determining the target functional node, the management server generates a new virtual transmission line based on the newly added location information and the target location information. This step ensures that the newly added functional virtual node can be connected to the existing distribution network with the shortest transmission line, which not only reduces the redundancy of the transmission line, but also improves the overall operation efficiency of the power grid. In addition, the above scheme allows the topology of the distribution network to be flexibly adjusted according to the newly added location information. Regardless of where the location of the newly added functional node is set, the management server can find the best connection solution through calculation, thereby maintaining the flexibility and scalability of the distribution network, and can support the subsequent upgrade and expansion of the power grid.

[0019] Optionally, after the management server determines the newly added transmission line distance set according to the newly added location information and the candidate location information of each candidate functional node in the candidate functional node set, the method further includes:

[0020] If the management server determines that the minimum new transmission line distance in the new transmission line distance set is greater than the preset new transmission line distance threshold, then the candidate function node corresponding to the minimum new transmission line distance is determined to be the first characteristic function node;

[0021] The management server determines a set of adjacent characteristic function nodes of the first characteristic function node according to the distribution network topology structure, wherein the adjacent characteristic function nodes in the set of adjacent characteristic function nodes are function nodes directly connected through transmission lines in the distribution network topology structure;

[0022] The management server determines that the adjacent feature function node with the shortest distance from the newly added location information in the adjacent feature function node set is the second feature function node;

[0023] The management server determines a characteristic transmission line according to the first characteristic function node and the second characteristic function node, and generates a third characteristic function node on the characteristic transmission line to divide the characteristic transmission line into a first characteristic transmission line and a second characteristic transmission line, wherein the first characteristic transmission line is used to connect the first characteristic function node and the third characteristic function node, and the second characteristic transmission line is used to connect the second characteristic function node and the third characteristic function node;

[0024] The management server generates a third characteristic transmission line according to the newly added location information and the third characteristic location information corresponding to the third characteristic function node, wherein the third characteristic transmission line is used to connect the newly added function virtual node and the third characteristic function node;

[0025] The management server updates the distribution network topology structure according to the newly added function virtual node, the third characteristic function node, the first characteristic transmission line, the second characteristic transmission line and the third characteristic transmission line to generate the updated distribution network topology structure.

[0026] In the above scheme, when the minimum transmission line distance between the newly added functional node and the candidate functional node in the existing distribution network exceeds the preset threshold, the connection is not directly abandoned, but a feasible connection scheme is further sought. By determining the first characteristic function node and the second characteristic function node, and generating the third characteristic function node on the characteristic transmission line, the newly added functional node can be connected to the distribution network in another way. Inserting the third characteristic function node on the characteristic transmission line and dividing the characteristic transmission line into two shorter transmission lines helps to optimize the structure of the power grid. This division not only reduces the length and load of a single transmission line, but also improves the reliability and redundancy of the power grid. When a fault occurs in the power grid, this structure can better isolate and restore the fault. By planning the transmission line more carefully, the loss of the transmission line can be reduced. In particular, when the connection distance between the newly added functional node and the existing power grid is far, by inserting the third characteristic function node and dividing the transmission line, the resistance and loss of the transmission line can be effectively reduced, thereby improving the overall efficiency of the power grid.

[0027] Optionally, the management server determines a set of operating parameters of the newly added functional nodes according to the newly added functional node information, and uses each operating parameter in the set of operating parameters of the newly added functional nodes to perform a simulated pressure quantification test on the updated distribution network topology structure to determine the working status of each functional node and the transmission line in the updated distribution network topology structure, and generates a working status set, including:

[0028] The management server obtains historical operation data of the distribution network topology structure, wherein the historical operation data includes historical operation monitoring parameters of each functional node in the functional node set and each transmission line in the transmission line set at each monitoring time;

[0029] The management server determines a set of extreme operating condition parameters of the distribution network topology structure according to the historical operation data;

[0030] The management server uses the newly added function node operating condition parameter set and the extreme operating condition parameter set as the operating condition input parameters of the updated distribution network topology structure to determine the operating status of each function node and transmission line in the updated distribution network topology structure and generate the operating status set.

[0031] In the above scheme, by obtaining the historical operating data of the distribution network topology, the management server can determine the set of extreme operating parameters of the distribution network based on this data, so as to more accurately simulate the operation status of the power grid after the new functional nodes are connected. This evaluation method based on historical data has higher accuracy and reliability than traditional theoretical calculations or empirical judgments. Through simulated pressure quantification testing, the working status of each functional node and transmission line in the distribution network topology can be evaluated and updated in real time, which helps to timely discover potential problems in the power grid, such as overload, short circuit, etc., so as to take measures to intervene in advance and avoid accidents.

[0032] In addition, through simulated stress quantitative testing, the impact of the addition of new functional nodes on the reliability and stability of the power grid can be evaluated. During the test, the management server can simulate various extreme working conditions, such as maximum load and minimum voltage, to test the power grid's bearing capacity. This testing method helps to identify weak links in the power grid, so that corresponding reinforcement measures can be taken to improve the reliability and stability of the power grid.

[0033] Optionally, the newly added functional node is a newly added automobile charging pile, and the newly added functional node operating condition parameter set includes the maximum output power of the newly added automobile charging pile; the management server obtains the historical operating data of the distribution network topology structure, including:

[0034] The management server obtains the device function node adjacent to the newly added vehicle charging pile in the updated distribution network topology structure and the device connection transmission line used to connect the newly added vehicle charging pile with the device function node, and the function node set includes the device function node;

[0035] The management server obtains historical operating data of the device function node and the transmission line connected to the device, and the extreme operating condition parameter set includes the maximum operating voltage and the maximum operating current of the device function node and the transmission line connected to the device, wherein the operating condition input parameters for updating the distribution network topology structure include the maximum output power, the maximum operating voltage and the maximum operating current.

[0036] In the above scheme, by obtaining the maximum output power of the newly added car charging piles, the load demand on the power grid can be accurately evaluated. At the same time, by obtaining the historical operation data of the adjacent equipment function nodes and the connected transmission lines, the performance of these nodes and lines in actual operation can be understood, so as to more accurately predict the operation status of the power grid after the newly added charging piles are connected. This evaluation method helps to avoid problems such as power grid overload and voltage fluctuations, and ensure the stable operation of the power grid.

[0037] Moreover, through the simulation pressure quantification test, the impact of charging piles at different locations and with different powers connected to the power grid can be evaluated. This provides a basis for the layout and planning of charging piles, helps to optimize the distribution of charging piles, reduce the load pressure on the power grid, and improve the efficiency of power grid resource utilization.

[0038] In addition, by comprehensively considering the operating parameters of the newly added charging piles and the historical operating data of the adjacent equipment function nodes and the connected transmission lines, the operating risks of the power grid can be more accurately assessed. During the test, various possible fault conditions can be simulated to test the fault response capabilities of the power grid. This testing method helps to discover potential risks in the power grid in advance, so that corresponding preventive measures can be taken to reduce the operating risks of the power grid. In this way, the power grid's support capacity for new energy vehicles can be improved by optimizing the layout and planning of charging piles.

[0039] Optionally, the management server determines the carrying capacity state of the distribution network topology structure according to the working state set, including:

[0040] If the management server determines that there is an abnormal working state in the working state set, it determines that the carrying capacity state is a state with a carrying risk, and the abnormal working state is a working state corresponding to a simulation test result of a functional node or a transmission line in the updated distribution network topology structure being greater than a preset result threshold;

[0041] If the management server determines that the abnormal working state does not exist in the working state set, it determines that the bearing capability state is a bearing safety state.

[0042] In the above scheme, the working state set of each functional node and transmission line in the updated distribution network topology is obtained through simulation testing, which can accurately identify the load risk of the power grid after the new charging pile is connected. When there is an abnormal working state in the working state set where the simulation test result is greater than the preset result threshold, the management server can quickly determine that the power grid has a load risk, so as to take timely measures to avoid problems such as power grid failure or overload. By judging the load-bearing capacity of the power grid, it can ensure that the power grid can maintain stable operation after the new load is connected. In the process of power grid planning, layout and scheduling, the load access can be reasonably arranged according to the evaluation results provided by this method to avoid overload or unstable operation of the power grid, thereby improving the operation safety of the power grid.

[0043] In addition, by evaluating the load-bearing capacity of the power grid, it is helpful to optimize the allocation of power grid resources. During the construction, transformation and upgrading of the power grid, the evaluation results can be used to reasonably allocate power grid equipment, lines, power sources and other resources to meet the load requirements of the power grid and improve the operation efficiency and economic benefits of the power grid.

[0044] Optionally, the first functional node is a distribution network monitoring device; correspondingly, after the management server determines the carrying capacity state of the distribution network topology structure according to the working state set, it also includes:

[0045] The management server sends installation instruction information of the newly added automobile charging pile to the distribution network monitoring device, and the installation instruction information includes a configuration status of the newly added functional node, and the configuration status is a confirmed installation status or a rejected installation status.

[0046] In the above scheme, by setting the first functional node as the distribution network monitoring device and sending installation instruction information to it after the evaluation is completed, the method realizes the closed-loop management of the distribution network planning and installation process. The management server can automatically decide the installation status of the newly added charging pile (confirm installation or refuse installation) based on the simulation test results, thereby improving the decision-making efficiency and accuracy.

[0047] Through the automated transmission of installation instruction information, the grid can quickly respond to the demand for new loads. Once the management server determines the grid's carrying capacity, it can immediately send installation instructions to the distribution network monitoring equipment, reducing the time delay of manual decision-making and information transmission, and improving the grid's response speed to new loads.

[0048] It can be seen that the above scheme enhances the intelligent level of power grid management by introducing automated decision-making and closed-loop management processes. The distribution network monitoring equipment can receive and respond to the instructions of the management server in real time, thereby realizing real-time monitoring and intelligent management of the power grid status. This intelligent management method helps to improve the stability and reliability of the power grid. In addition, through the automated installation decision-making process, the power grid resources can be configured more reasonably. Only when the power grid has sufficient carrying capacity will the installation of new charging piles be approved, thus avoiding the waste of resources and cost increase caused by blindly adding loads.

[0049] In a second aspect, the present application provides a distribution network management system, comprising: a management server and a distribution network topology structure, wherein the distribution network topology structure comprises a functional node set and a transmission line set, wherein each transmission line in the transmission line set is used to connect two different functional nodes in the functional node set, and the management server is communicatively connected with each functional node in the functional node set;

[0050] Obtaining a request for a newly added function node through a first function node in the function node set, and sending the request for a newly added function node to the management server, wherein the request for a newly added function node includes information about the newly added function node and newly added location information;

[0051] The management server generates a newly added functional virtual node according to the newly added location information, and updates the distribution network topology structure according to the newly added functional virtual node to generate an updated distribution network topology structure, wherein the updated distribution network topology structure includes an updated functional node set and an updated transmission line set, each transmission line in the updated transmission line set is used to connect two different functional nodes in the updated transmission line set, and the updated functional node set includes the functional node set and the newly added functional virtual node;

[0052] The management server determines a set of operating condition parameters of the newly added function nodes according to the information of the newly added function nodes, and uses each operating condition parameter in the set of operating condition parameters of the newly added function nodes to perform a simulated pressure quantification test on the updated distribution network topology structure to determine the operating status of each functional node and the transmission line in the updated distribution network topology structure, and generates a working status set;

[0053] The management server determines a carrying capacity state of the distribution network topology structure according to the working state set, and the carrying capacity state is used to indicate a configuration state of the new function node corresponding to the new function node request.

[0054] Optionally, the management server generates a new function virtual node according to the new location information, and updates the distribution network topology structure according to the new function virtual node to generate an updated distribution network topology structure, including:

[0055] The management server determines a newly added transmission line distance set according to the newly added location information and the selected location information of each to-be-selected function node in the to-be-selected function node set, wherein the newly added transmission line distance set includes the newly added transmission line distances between the newly added location information and the to-be-selected location information of each to-be-selected function node in the to-be-selected function node set;

[0056] If the management server determines that the minimum new transmission line distance in the new transmission line distance set is less than or equal to the preset new transmission line distance threshold, then the candidate function node corresponding to the minimum new transmission line distance is determined as the target function node;

[0057] The management server generates a newly added virtual transmission line according to the newly added location information and the target location information corresponding to the target functional node, wherein the newly added virtual transmission line is used to connect the newly added functional virtual node and the target functional node;

[0058] The management server updates the distribution network topology structure according to the newly added virtual transmission line and the newly added functional virtual node to generate the updated distribution network topology structure.

[0059] Optionally, after the management server determines the newly added transmission line distance set according to the newly added location information and the candidate location information of each candidate functional node in the candidate functional node set, the method further includes:

[0060] If the management server determines that the minimum new transmission line distance in the new transmission line distance set is greater than the preset new transmission line distance threshold, then the candidate function node corresponding to the minimum new transmission line distance is determined to be the first characteristic function node;

[0061] The management server determines a set of adjacent characteristic function nodes of the first characteristic function node according to the distribution network topology structure, wherein the adjacent characteristic function nodes in the set of adjacent characteristic function nodes are function nodes directly connected through transmission lines in the distribution network topology structure;

[0062] The management server determines that the adjacent feature function node with the shortest distance from the newly added location information in the adjacent feature function node set is the second feature function node;

[0063] The management server determines a characteristic transmission line according to the first characteristic function node and the second characteristic function node, and generates a third characteristic function node on the characteristic transmission line to divide the characteristic transmission line into a first characteristic transmission line and a second characteristic transmission line, wherein the first characteristic transmission line is used to connect the first characteristic function node and the third characteristic function node, and the second characteristic transmission line is used to connect the second characteristic function node and the third characteristic function node;

[0064] The management server generates a third characteristic transmission line according to the newly added location information and the third characteristic location information corresponding to the third characteristic function node, wherein the third characteristic transmission line is used to connect the newly added function virtual node and the third characteristic function node;

[0065] The management server updates the distribution network topology structure according to the newly added function virtual node, the third characteristic function node, the first characteristic transmission line, the second characteristic transmission line and the third characteristic transmission line to generate the updated distribution network topology structure.

[0066] Optionally, the management server determines a set of operating parameters of the newly added functional nodes according to the newly added functional node information, and uses each operating parameter in the set of operating parameters of the newly added functional nodes to perform a simulated pressure quantification test on the updated distribution network topology structure to determine the working status of each functional node and the transmission line in the updated distribution network topology structure, and generates a working status set, including:

[0067] The management server obtains historical operation data of the distribution network topology structure, wherein the historical operation data includes historical operation monitoring parameters of each functional node in the functional node set and each transmission line in the transmission line set at each monitoring time;

[0068] The management server determines a set of extreme operating condition parameters of the distribution network topology structure according to the historical operation data;

[0069] The management server uses the newly added function node operating condition parameter set and the extreme operating condition parameter set as the operating condition input parameters of the updated distribution network topology structure to determine the operating status of each function node and transmission line in the updated distribution network topology structure and generate the operating status set.

[0070] Optionally, the newly added functional node is a newly added automobile charging pile, and the newly added functional node operating condition parameter set includes the maximum output power of the newly added automobile charging pile; the management server obtains the historical operating data of the distribution network topology structure, including:

[0071] The management server obtains the device function node adjacent to the newly added vehicle charging pile in the updated distribution network topology structure and the device connection transmission line used to connect the newly added vehicle charging pile with the device function node, and the function node set includes the device function node;

[0072] The management server obtains historical operating data of the device function node and the transmission line connected to the device, and the extreme operating condition parameter set includes the maximum operating voltage and the maximum operating current of the device function node and the transmission line connected to the device, wherein the operating condition input parameters for updating the distribution network topology structure include the maximum output power, the maximum operating voltage and the maximum operating current.

[0073] Optionally, the management server determines the carrying capacity state of the distribution network topology structure according to the working state set, including:

[0074] If the management server determines that there is an abnormal working state in the working state set, it determines that the carrying capacity state is a state with a carrying risk, and the abnormal working state is a working state corresponding to a simulation test result of a functional node or a transmission line in the updated distribution network topology structure being greater than a preset result threshold;

[0075] If the management server determines that the abnormal working state does not exist in the working state set, it determines that the bearing capability state is a bearing safety state.

[0076] Optionally, the first functional node is a distribution network monitoring device; correspondingly, after the management server determines the carrying capacity state of the distribution network topology structure according to the working state set, it also includes:

[0077] The management server sends installation instruction information of the newly added automobile charging pile to the distribution network monitoring device, and the installation instruction information includes a configuration status of the newly added functional node, and the configuration status is a confirmed installation status or a rejected installation status.

[0078] In a third aspect, the present application provides an electronic device, including:

[0079] A processor; and a memory for storing executable instructions of the processor;

[0080] The processor is configured to perform any possible method described in the first aspect by executing the executable instructions.

[0081] The quantitative evaluation method for the carrying capacity of a distribution network provided in the present application obtains a request for a new function node through the first function node in a function node set, and sends the request for the new function node to a management server. Then, the management server generates a new function virtual node according to the new location information, and updates the distribution network topology structure according to the new function virtual node to generate an updated distribution network topology structure. In addition, the management server determines a set of operating parameters of the new function node according to the new function node information, and uses each operating parameter in the set of operating parameters of the new function node to perform a simulated pressure quantitative test on the updated distribution network topology structure to determine the working status of each function node and the transmission line in the updated distribution network topology structure, and generates a working status set, so that the management server determines the carrying capacity status of the distribution network topology structure according to the working status set, thereby realizing the functions of early warning and risk prevention and control. If it is determined that there is a carrying risk state, it means that the configuration of the new function node may have an adverse effect on the stable operation of the power grid, so that the management personnel can take measures in advance to adjust and optimize, thereby avoiding potential safety risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0082] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0083] Figure 1 It is a flow chart of a method for quantitatively evaluating the carrying capacity of a distribution network according to an exemplary embodiment of the present application;

[0084] Figure 2 is a flow chart of a method for quantitatively evaluating the carrying capacity of a distribution network according to another exemplary embodiment of the present application;

[0085] Figure 3 is a structural schematic diagram of a power distribution network management system according to an exemplary embodiment of the present application;

[0086] Figure 4 It is a schematic diagram of the structure of an electronic device according to an exemplary embodiment of the present application.

[0087] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0088] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0089] In order to solve the above problems, the embodiment provided by the present application first constructs a distribution network management system including a management server and a distribution network topology structure. The distribution network topology structure consists of a set of functional nodes and a set of transmission lines, and the management server maintains a communication connection with each functional node. When a new functional node request is added to the system, the management server can respond quickly, generate a new functional virtual node based on the new location information, and dynamically update the distribution network topology structure. This system integration and dynamic update mechanism ensures that the distribution network can be flexibly adjusted when facing new loads, maintaining the rationality and efficiency of the structure.

[0090] After updating the topology of the distribution network, the embodiment provided by the present application uses a management server to perform a simulated stress quantification test on the updated structure. This test process is based on the operating parameter set of the newly added functional nodes and the historical operating data of the distribution network, and can accurately simulate the operating state of the power grid after the new load is connected. Through the test, the working state of each functional node and the transmission line can be accurately evaluated, so as to discover potential risks such as overload and short circuit. This precise simulated stress quantification test provides a scientific basis for the evaluation of the carrying capacity of the distribution network.

[0091] Based on the results of the simulated stress quantification test, the management server can intelligently determine the load-bearing capacity status of the distribution network topology. If there is an abnormal working state, it is determined to be a load-bearing risk state, and corresponding early warning and prevention and control measures are taken; if there is no abnormal working state, it is determined to be a load-bearing safety state, and the access of new functional nodes is allowed. In addition, the embodiment provided in the present application also realizes the closed-loop management of the distribution network planning and installation process by sending installation instruction information to the distribution network monitoring equipment, thereby improving the efficiency and accuracy of power grid management.

[0092] In addition, the embodiments provided in this application are aimed at the specific application scenario of adding a new car charging pile. By obtaining the maximum output power of the new car charging pile and the historical operation data of the adjacent device function nodes and the connected transmission lines, the impact of the charging pile on the power grid after access can be accurately evaluated. However, the application of the method in the embodiment provided in this application is not limited to charging piles. Its flexibility and scalability enable it to be widely used in the access evaluation of various new functional nodes. Whether it is a new power generation equipment, energy storage equipment or other load equipment, an effective method for quantitative evaluation of carrying capacity can be provided.

[0093] In summary, the embodiments provided in this application provide strong guarantees for the safe and stable operation of the distribution network through core concepts such as system integration and dynamic update, precise simulation pressure quantification test, intelligent load-bearing capacity judgment and decision-making, flexible application scenarios and wide applicability.

[0094] In addition, for ease of understanding, the distribution network management system applied by the method in the embodiment provided in this application is described in detail:

[0095] The method provided in this embodiment can be applied to a distribution network management system, which includes a management server and a distribution network topology structure. The distribution network topology structure includes a functional node set and a transmission line set. Each transmission line in the transmission line set is used to connect two different functional nodes in the functional node set. The management server is communicatively connected with each functional node in the functional node set.

[0096] Among them, the management server is the core component of the distribution network management system, which plays the role of data processing, decision making and communication hub. The management server has computing power, can process a large amount of data from various functional nodes in the distribution network topology, and execute complex algorithms for data analysis, status evaluation and decision making. The details are as follows:

[0097] Data processing capability: The management server can receive, store and process real-time data from functional nodes, including but not limited to operating parameters such as voltage, current, power factor, temperature, etc. These data are important bases for evaluating the operating status of the distribution network and making decisions.

[0098] Decision-making function: Based on the processed data, the management server can use built-in algorithms and models to make intelligent decisions. For example, when a new functional node is requested to access, the management server can automatically evaluate the carrying capacity of the distribution network and decide whether to allow the new functional node to access.

[0099] Communication connection: The management server maintains communication connection with each functional node in the distribution network topology. This communication connection is based on high-speed and reliable network technology to ensure that data can be transmitted in real time and accurately. The management server receives data sent by the functional node through the communication connection and sends control instructions or status information to the functional node.

[0100] The distribution network topology is the physical basis of the distribution network management system, which describes the connection relationship and layout between the various components in the distribution network. The distribution network topology is mainly composed of a set of functional nodes and a set of transmission lines. The details are as follows:

[0101] Functional node set: Functional node set includes various equipment, facilities or areas in the distribution network, such as substations, switch stations, distribution transformers, car charging piles, etc. These functional nodes play different roles in the distribution network and work together to maintain the normal operation of the power grid. Each functional node has data collection and communication capabilities and can send operating data to the management server in real time.

[0102] Transmission line set: A transmission line set consists of multiple transmission lines, which are used to connect two different functional nodes in the functional node set. Transmission lines play an important role in transmitting electric energy in the distribution network. The parameters of the transmission line (such as length, impedance, current carrying capacity, etc.) have a significant impact on the operating status and carrying capacity of the power grid. In the distribution network topology, the layout and connection relationship of the transmission lines are accurately described so that the management server can accurately perform simulation analysis and decision making.

[0103] The management server is connected to each functional node in the functional node set through a high-speed and reliable communication network. This connection ensures that data can be transmitted between the management system and the distribution network in real time and accurately.

[0104] Optionally, the above-mentioned distribution network topology can be a distribution network topology of a rural distribution network, which is used to monitor the operating status of lines, distribution transformers, such as heavy overloads and faults. With the large-scale access of private charging piles in rural areas, it is necessary to conduct a quantitative assessment of the carrying capacity of rural distribution networks, which can guide the orderly expansion and transformation of rural supporting power grids, thereby better ensuring the safety of power grid operation and meeting the power demand of rural charging infrastructure.

[0105] Figure 1 FIG. 1 is a flow chart of a method for quantitatively evaluating the load-bearing capacity of a distribution network according to an exemplary embodiment of the present application. Figure 1 As shown, the method provided in this embodiment includes:

[0106] S101: Obtain a request for adding a new function node through a first function node in a function node set.

[0107] In this step, a new function node request is obtained through the first function node in the function node set, and the new function node request is sent to the management server. The new function node request includes new function node information and new location information.

[0108] Specifically, a request for a new functional node is obtained through the first functional node in the distribution network topology (such as a distribution network monitoring device). The request contains information about the new functional node (such as the model and power of the new car charging pile) and new location information (such as specific geographic coordinates or relative position). After receiving the request, the first functional node sends it to the management server for processing.

[0109] S102: The management server generates a new function virtual node according to the new location information, and updates the distribution network topology structure according to the new function virtual node to generate an updated distribution network topology structure.

[0110] In this step, the management server generates a new functional virtual node based on the newly added location information, and updates the distribution network topology structure based on the newly added functional virtual node to generate an updated distribution network topology structure. The updated distribution network topology structure includes an updated functional node set and an updated transmission line set. Each transmission line in the updated transmission line set is used to connect two different functional nodes in the updated transmission line set. The updated functional node set includes a functional node set and a new functional virtual node.

[0111] Specifically, after receiving the request for adding a new functional node, the management server first generates a new functional virtual node according to the new location information, and then checks the functional node set in the distribution network topology to determine the best connection solution for the new functional virtual node.

[0112] Furthermore, the management server calculates the distance of the newly added transmission line between the newly added location information and the selected location information of each candidate function node in the candidate function node set to form a set of newly added transmission line distances. If the minimum newly added transmission line distance in the set is less than or equal to the preset threshold of the newly added transmission line distance, the candidate function node corresponding to the distance is determined to be the target function node, and a newly added virtual transmission line connecting the newly added function virtual node and the target function node is generated. Subsequently, the management server updates the distribution network topology structure according to the newly added virtual transmission line and the newly added function virtual node to generate an updated distribution network topology structure.

[0113] If the minimum distance of the new transmission line is greater than the preset threshold of the distance of the new transmission line, the management server will further look for a feasible connection solution. For example, the candidate function node corresponding to the minimum distance of the new transmission line is determined to be the first characteristic function node, and the adjacent characteristic function node (the second characteristic function node) with the smallest distance from the newly added location information in its adjacent characteristic function node set is found. Then, a third characteristic function node is generated on the characteristic transmission line connecting the first characteristic function node and the second characteristic function node, and the characteristic transmission line is divided into two shorter transmission lines. Finally, a new transmission line connecting the newly added function virtual node and the third characteristic function node is generated, and the distribution network topology is updated according to the newly added function virtual node, the third characteristic function node and the newly added transmission line.

[0114] S103. The management server determines a set of operating parameters of the newly added function node according to the information of the newly added function node, and uses each operating parameter in the set of operating parameters of the newly added function node to perform a simulated pressure quantification test on the updated distribution network topology.

[0115] In this step, the management server determines a set of operating condition parameters of the newly added functional nodes based on the information of the newly added functional nodes, and uses each operating condition parameter in the set of operating condition parameters of the newly added functional nodes to perform a simulated stress quantification test on the updated distribution network topology structure to determine the working status of each functional node and transmission line in the updated distribution network topology structure, and generate a working status set.

[0116] Specifically, after updating the distribution network topology, the management server will determine the set of operating parameters of the newly added functional nodes (such as the maximum output power of the newly added car charging pile) based on the information of the newly added functional nodes. Subsequently, the management server will obtain the historical operating data of the distribution network topology, including the historical operating monitoring parameters of each functional node and transmission line at each monitoring time. Based on this data, the management server can determine the set of extreme operating parameters of the distribution network.

[0117] Next, the management server uses the operating condition parameter set and the extreme operating condition parameter set of the newly added functional node as the operating condition input parameters for updating the distribution network topology to perform a simulated stress quantification test. This test is intended to simulate the operating state of the power grid after the newly added functional node is connected, and to evaluate the working state of each functional node and transmission line. After the test is completed, the management server will generate a working state set containing the working state information of all functional nodes and transmission lines. It is worth noting that the above-mentioned simulated stress quantification test can be based on power grid simulation software such as MATLAB, OpenDSS, CircuitLab, Tinkercad, EasyEDA, etc., which is not specifically limited in this embodiment.

[0118] S104. The management server determines the carrying capacity status of the distribution network topology structure according to the working status set.

[0119] In this step, the management server determines the carrying capacity state of the distribution network topology structure according to the working state set, and the carrying capacity state is used to indicate the configuration state of the new function node corresponding to the new function node request.

[0120] Specifically, the management server determines the carrying capacity state of the updated distribution network topology structure based on the information in the working state set. If there is an abnormal working state in the working state set (such as a working state where the simulation test result is greater than the preset result threshold), the carrying capacity state is determined to be a state with a carrying risk, which means that the access of the newly added functional node may have an adverse effect on the stable operation of the power grid. At this time, the management server can send an early warning message to the distribution network monitoring device to prompt the management personnel to take measures in advance for adjustment and optimization.

[0121] If there is no abnormal working state in the working state set, the load-bearing capacity state is determined to be a safe load-bearing state, indicating that the access of the newly added function node will not significantly affect the stable operation of the power grid. In this case, the management server can send installation instruction information of the newly added function node to the distribution network monitoring device to allow it to access the power grid.

[0122] In this embodiment, a request for a new function node is obtained through the first function node in the function node set, and the request for a new function node is sent to the management server. Then, the management server generates a new function virtual node according to the new location information, and updates the distribution network topology according to the new function virtual node to generate an updated distribution network topology. In addition, the management server determines a set of operating parameters of the new function node according to the new function node information, and uses each operating parameter in the set of operating parameters of the new function node to perform a simulated pressure quantification test on the updated distribution network topology to determine the working status of each function node and the transmission line in the updated distribution network topology, and generates a working status set, so that the management server determines the carrying capacity status of the distribution network topology according to the working status set, thereby realizing the functions of early warning and risk prevention and control. If it is determined that there is a carrying risk state, it means that the configuration of the new function node may have an adverse effect on the stable operation of the power grid, so that the management personnel can take measures in advance to adjust and optimize, thereby avoiding potential safety risks.

[0123] Figure 2 FIG. 1 is a flow chart of a method for quantitatively evaluating the load-bearing capacity of a distribution network according to another exemplary embodiment of the present application. Figure 2 As shown, the method for quantitatively evaluating the load-bearing capacity of a distribution network provided in this embodiment includes:

[0124] S201: Obtain a request for adding a new function node through a first function node in a function node set.

[0125] In this step, a new function node request is obtained through the first function node in the function node set, and the new function node request is sent to the management server. The new function node request includes new function node information and new location information.

[0126] Specifically, a request for a new functional node is obtained through the first functional node in the distribution network topology (such as a distribution network monitoring device). The request contains information about the new functional node (such as the model and power of the new car charging pile) and new location information (such as specific geographic coordinates or relative position). After receiving the request, the first functional node sends it to the management server for processing.

[0127] S202: The management server determines a newly added transmission line distance set according to the newly added location information and the candidate location information of each candidate functional node in the candidate functional node set.

[0128] In this step, the management server determines a newly added transmission line distance set based on the newly added location information and the selected location information of each candidate functional node in the candidate functional node set, wherein the newly added transmission line distance set includes the newly added transmission line distances between the newly added location information and the selected location information of each candidate functional node in the candidate functional node set.

[0129] Specifically, when a new functional node is needed in the distribution network (such as a new car charging pile), the request for the new functional node will first be obtained through the first functional node in the distribution network (such as the distribution network monitoring device). The request contains the information of the new functional node and the new location information, which are sent to the management server. After receiving the request for the new functional node, the management server will access the current state of the distribution network topology. From the current distribution network topology, the management server will identify all functional nodes and form a set of candidate functional nodes, which are potential connection points for new functional nodes. For each candidate functional node in the set of candidate functional nodes, the management server will calculate the distance of the new transmission line based on its candidate location information and the new location information. The distance of the new transmission line refers to the length of the transmission line required from the location of the new functional node to the location of the candidate functional node.

[0130] The management server will traverse all candidate function nodes, calculate and record all possible new transmission line distances, and thus form a new transmission line distance set. After generating the new transmission line distance set, the management server will find and determine the minimum new transmission line distance in the set. The candidate function node corresponding to this minimum distance will be regarded as the closest potential connection point to the new function node, i.e., the target function node.

[0131] Once the target functional node is determined, the management server will generate a new virtual transmission line based on the location information of the target functional node and the newly added functional node. Subsequently, the management server will update the distribution network topology structure according to the newly added virtual transmission line and the newly added functional virtual node to generate an updated distribution network topology structure.

[0132] S203: The management server generates and updates the distribution network topology.

[0133] In one possible scenario, if the management server determines that the minimum new transmission line distance in the new transmission line distance set is less than or equal to the preset new transmission line distance threshold, the candidate function node corresponding to the minimum new transmission line distance is determined as the target function node. The management server generates a new virtual transmission line according to the new location information and the target location information corresponding to the target function node, and the new virtual transmission line is used to connect the new function virtual node and the target function node. The management server updates the distribution network topology structure according to the new virtual transmission line and the new function virtual node to generate an updated distribution network topology structure.

[0134] Specifically, after calculating the set of newly added transmission line distances, the management server will traverse the set to find the minimum newly added transmission line distance, and then compare the minimum distance with a preset threshold value of the newly added transmission line distance.

[0135] If the minimum new transmission line distance is less than or equal to the preset new transmission line distance threshold, this means that there is a candidate functional node that is relatively close to the new functional node and can be used as a connection point.

[0136] When it is determined that the minimum distance of the new transmission line meets the conditions, the management server will find the candidate functional node corresponding to this minimum distance and determine it as the target functional node. The target functional node is the optimal connection point when the new functional node is connected to the distribution network, because it is closest to the location of the new functional node and can reduce the length and loss of the transmission line. Once the target functional node is determined, the management server will calculate the path and length of the new virtual transmission line based on the new location information and the target location information corresponding to the target functional node. The new virtual transmission line is a transmission line connecting the new functional virtual node (that is, the virtual representation of the new functional node in the distribution network topology) and the target functional node. The management server will use the existing data and algorithms of the distribution network topology to optimize the path of the new virtual transmission line to ensure that it meets the safety, stability and efficiency requirements of the power grid.

[0137] After the new virtual transmission line is generated, the management server will update the distribution network topology according to the new transmission line and the new functional virtual node. The update process includes adding the new functional virtual node to the functional node set, adding the new virtual transmission line to the transmission line set, and updating the relevant connection information and parameters. Through this step, the distribution network topology is updated to include the new functional node, which provides a basis for the subsequent simulation stress quantification test and carrying capacity assessment.

[0138] In another possible situation, if the management server determines that the minimum new transmission line distance in the new transmission line distance set is greater than the preset new transmission line distance threshold, the candidate function node corresponding to the minimum new transmission line distance is determined as the first characteristic function node;

[0139] The management server determines a set of adjacent characteristic function nodes of the first characteristic function node according to the topological structure of the distribution network, wherein the adjacent characteristic function nodes in the set of adjacent characteristic function nodes are function nodes directly connected through transmission lines in the topological structure of the distribution network;

[0140] The management server determines that the adjacent feature function node with the shortest distance to the newly added location information in the adjacent feature function node set is the second feature function node;

[0141] The management server determines a characteristic transmission line according to the first characteristic function node and the second characteristic function node, and generates a third characteristic function node on the characteristic transmission line to divide the characteristic transmission line into a first characteristic transmission line and a second characteristic transmission line, wherein the first characteristic transmission line is used to connect the first characteristic function node and the third characteristic function node, and the second characteristic transmission line is used to connect the second characteristic function node and the third characteristic function node;

[0142] The management server generates a third characteristic transmission line according to the newly added location information and the third characteristic location information corresponding to the third characteristic function node, and the third characteristic transmission line is used to connect the newly added function virtual node and the third characteristic function node;

[0143] The management server updates the distribution network topology structure according to the newly added functional virtual node, the third characteristic functional node, the first characteristic transmission line, the second characteristic transmission line and the third characteristic transmission line to generate an updated distribution network topology structure.

[0144] Specifically, the management server first checks whether the minimum distance of the newly added transmission line in the newly added transmission line distance set is greater than a preset threshold of the distance of the newly added transmission line. This threshold is set based on factors such as the actual layout of the distribution network, the capacity limit of the transmission line, and the safety distance.

[0145] If the minimum distance of the new transmission line is greater than the preset threshold, it means that it may not be realistic or reasonable to directly connect the new functional node to the nearest candidate functional node, and an alternative solution needs to be found.

[0146] After determining that the minimum distance of the new transmission line exceeds the standard, the management server will mark the candidate function node corresponding to this minimum distance as the first characteristic function node. Although this node is not the optimal connection point, it is the node closest to the newly added function node calculated based on the current location information. The management server will then determine the set of adjacent characteristic function nodes of the first characteristic function node based on the topology of the distribution network. This set contains all function nodes that are directly connected to the first characteristic function node through transmission lines. Among these adjacent characteristic function nodes, the management server will calculate the distance between them and the newly added location information, find the adjacent characteristic function node with the smallest distance, and mark it as the second characteristic function node.

[0147] After determining the first characteristic function node and the second characteristic function node, the management server selects a suitable position on the characteristic transmission line connected between them to generate a third characteristic function node. This newly generated node divides the characteristic transmission line into two shorter transmission lines: the first characteristic transmission line and the second characteristic transmission line. The first characteristic transmission line connects the first characteristic function node and the third characteristic function node, and the second characteristic transmission line connects the second characteristic function node and the third characteristic function node.

[0148] Next, the management server generates a third characteristic transmission line based on the newly added location information and the third characteristic location information corresponding to the third characteristic function node. This new transmission line is used to connect the newly added function virtual node (representing the virtual representation of the newly added function node in the distribution network topology) and the third characteristic function node.

[0149] Finally, the management server will update the distribution network topology according to the newly added virtual function node, the third characteristic function node, the first characteristic transmission line, the second characteristic transmission line, and the third characteristic transmission line. This update process includes adding the newly added virtual function node and the third characteristic function node to the function node set, adding the first characteristic transmission line, the second characteristic transmission line, and the third characteristic transmission line to the transmission line set, and updating all related connection information and parameters.

[0150] S204. The management server determines a set of operating parameters of the newly added function node according to the information of the newly added function node, and uses each operating parameter in the set of operating parameters of the newly added function node to perform a simulated pressure quantification test on the updated distribution network topology.

[0151] In this step, the management server determines a set of operating condition parameters of the newly added functional nodes based on the information of the newly added functional nodes, and uses each operating condition parameter in the set of operating condition parameters of the newly added functional nodes to perform a simulated stress quantification test on the updated distribution network topology structure to determine the working status of each functional node and transmission line in the updated distribution network topology structure, and generate a working status set.

[0152] In one possible implementation, the management server obtains historical operating data of the distribution network topology structure, the historical operating data including historical operating monitoring parameters of each functional node in the functional node set and each transmission line in the transmission line set at each monitoring time; the management server determines the extreme operating condition parameter set of the distribution network topology structure based on the historical operating data; the management server uses the newly added functional node operating condition parameter set and the extreme operating condition parameter set as operating condition input parameters for updating the distribution network topology structure, so as to determine the working status of each functional node and transmission line in the updated distribution network topology structure, and generate a working status set.

[0153] Specifically, the management server first obtains the historical operation data of the distribution network topology from the database of the distribution network. These data cover the historical operation monitoring parameters of each functional node in the functional node set and each transmission line in the transmission line set at each monitoring time. These monitoring parameters may include but are not limited to voltage, current, power, temperature, load rate, etc., which reflect the state and performance of the distribution network in actual operation. After obtaining the historical operation data, the management server will analyze and process these data to determine the limit operating condition parameter set of the distribution network topology. The limit operating condition parameters refer to the operating parameters of each node and line of the distribution network under specific conditions (such as extreme conditions such as maximum load and minimum voltage). These parameters are crucial for evaluating the carrying capacity and stability of the distribution network. The management server may use statistical analysis, data mining or machine learning methods to extract representative limit operating condition parameters from the historical operation data. After determining the limit operating condition parameter set, the management server will combine the operating condition parameter set of the newly added functional node to prepare the operating condition input parameters for the simulated stress quantification test. The operating condition parameter set of the newly added functional node includes various parameters that may be generated during the operation of the newly added node, such as the maximum output power of the newly added car charging pile. The management server will merge the operating condition parameter set of the newly added functional node with the extreme operating condition parameter set as the operating condition input parameters for updating the distribution network topology.

[0154] After preparing the working condition input parameters, the management server will perform a simulated stress quantification test on the updated distribution network topology. During the test, the management server will simulate the operating status of the power grid under various extreme conditions according to the working condition input parameters, and evaluate the working status of each functional node and transmission line. Through the test, the management server can generate a working status set, which contains the working status of all nodes and lines in the updated distribution network topology in the simulation test. The working status set is the output result of the simulated stress quantification test, which records in detail the specific working status of each functional node and transmission line in the simulation test. These working states may include normal, overload, short circuit, fault and other situations, which provide managers with an important basis for intuitively understanding the operating status of the power grid. By analyzing the working status set, managers can evaluate the impact of the newly added functional nodes on the distribution network and take corresponding measures to ensure the safe and stable operation of the power grid.

[0155] In a possible application scenario, the newly added function node may be a newly added car charging pile, and the newly added function node operating condition parameter set includes the maximum output power of the newly added car charging pile. Correspondingly, the management server obtains the historical operation data of the distribution network topology structure, including:

[0156] The management server obtains the adjacent device function nodes of the newly added car charging piles in the updated distribution network topology and the device connection transmission lines used to connect the newly added car charging piles and the device function nodes, and the function node set includes the device function nodes; the management server obtains the historical operating data of the device function nodes and the device connection transmission lines, and the extreme operating condition parameter set includes the maximum operating voltage and maximum operating current of the device function nodes and the device connection transmission lines, wherein the operating condition input parameters for updating the distribution network topology include the maximum output power, the maximum operating voltage and the maximum operating current.

[0157] Specifically, the management server will identify the adjacent device function nodes of the newly added car charging pile in the updated distribution network topology. These nodes are devices that are directly connected to or closely electrically related to the charging pile, such as transformers, switchgear, or other load nodes. At the same time, the management server will also determine the device connection transmission lines used to connect the newly added car charging pile to these device function nodes. These transmission lines are the key path for the transmission of electrical energy from the power source to the charging pile.

[0158] For the identified adjacent device function nodes and device-connected transmission lines, the management server will obtain their historical operating data from its database. These data include operating monitoring parameters such as voltage, current, and power at each monitoring moment. Based on the acquired historical operating data, the management server will further analyze and determine the extreme operating parameters of the adjacent device function nodes and device-connected transmission lines. These parameters include the maximum operating voltage and maximum operating current that these nodes and lines may reach under extreme conditions (such as maximum load, minimum voltage, etc.). These extreme operating parameters are an important basis for evaluating the carrying capacity of the distribution network, and can be used to evaluate the tolerance and potential risks of the power grid when facing extreme situations.

[0159] After determining the maximum output power of the newly added car charging piles and the extreme operating parameters of the adjacent device function nodes and the device-connected transmission lines, the management server will use these parameters as the operating input parameters for updating the distribution network topology. These operating input parameters include the maximum output power of the charging piles, the maximum operating voltage and current of the adjacent device function nodes, and the maximum operating voltage and current of the device-connected transmission lines. These parameters will be used in subsequent simulation stress quantification tests to evaluate the operating status and carrying capacity of the updated distribution network topology after the new charging piles are connected.

[0160] Using the prepared operating condition input parameters, the management server will conduct a simulated stress quantification test on the updated distribution network topology. During the test, the management server will simulate the operation of the power grid under various extreme conditions and evaluate the working status of the newly added car charging piles and their adjacent nodes and lines.

[0161] Through the test, the management server can generate a detailed working status set, including the specific working status of each functional node and transmission line in the simulation test. This status information provides managers with an intuitive understanding of the grid operation status and carrying capacity.

[0162] S205. The management server determines the carrying capacity status of the distribution network topology structure according to the working status set.

[0163] In this step, if the management server determines that there is an abnormal working state in the working state set, it determines that the carrying capacity state is a state with a carrying risk, and the abnormal working state is a working state corresponding to a simulation test result of updating a functional node or a transmission line in the distribution network topology structure that is greater than a preset result threshold; if the management server determines that there is no abnormal working state in the working state set, it determines that the carrying capacity state is a safe carrying state.

[0164] Specifically, after the simulated stress quantification test is completed, the management server will generate a working state set containing the working states of all functional nodes and transmission lines in the updated distribution network topology. These state information reflects the operation of the power grid under simulated extreme working conditions.

[0165] In order to evaluate the carrying capacity of the power grid, the management server will preset a series of result thresholds. These thresholds are determined based on factors such as the design specifications, safety standards, and historical operating experience of the power grid, and are used to determine whether the working status of functional nodes and transmission lines is normal. The management server will check each status information in the working status set one by one and compare it with the preset result threshold. If it is found that the simulation test result of a functional node or transmission line exceeds the corresponding threshold, it is considered that the node or line is in an abnormal working state.

[0166] According to whether there is an abnormal working state in the working state set, the management server determines the carrying capacity state of the distribution network topology structure:

[0167] If there is an abnormal working state, it means that the access of the new car charging piles may cause the grid to be unable to operate stably under certain extreme conditions, so the management server will determine the carrying capacity state as "there is a carrying risk state". At this time, the management personnel need to take corresponding measures, such as adjusting the installation location and power of the charging piles or optimizing the grid structure, to reduce the carrying risk of the grid.

[0168] If there is no abnormal working state in the working state set, it means that the access of the new car charging pile will not have an adverse impact on the carrying capacity of the power grid, so the management server will determine the carrying capacity state as "carrying safety state". At this time, the management personnel can approve the installation of the charging pile and put it into use.

[0169] Finally, the management server will generate a detailed evaluation report, including the simulation test process, results, load-bearing capacity status, and corresponding recommended measures, etc. This report will provide managers with comprehensive reference information to help them better understand the operation status and load-bearing capacity of the power grid and make reasonable decisions.

[0170] S206. The management server sends installation instruction information of the newly added vehicle charging pile to the distribution network monitoring device.

[0171] In this step, the first functional node may be a power distribution network monitoring device. The management server sends the installation instruction information of the newly added vehicle charging pile to the power distribution network monitoring device, and the installation instruction information includes the configuration status of the newly added functional node, and the configuration status is a confirmed installation status or a rejected installation status.

[0172] Specifically, the management server will determine whether the access of the newly added car charging pile will have an adverse impact on the carrying capacity of the distribution network based on the information in the working status set. If the simulation test results of all functional nodes and transmission lines are within the preset result threshold range, that is, there is no abnormal working state, the management server will determine the configuration state of the newly added functional node as "confirmed installation state". On the contrary, if there is an abnormal working state, the configuration state will be determined as "rejected installation state".

[0173] Once the configuration status of the newly added car charging pile is determined, the management server will generate the corresponding installation instruction information. This information will clearly indicate the configuration status of the newly added functional node, that is, "confirm installation" or "reject installation". In addition, in order to facilitate the understanding and execution of the distribution network monitoring equipment, the installation instruction information may also contain other relevant details, such as the specific location of the newly added charging pile, power parameters, etc.

[0174] After the installation instruction information is generated, the management server will send it to the distribution network monitoring device through the predetermined communication channel. This step ensures the timely transmission and accurate reception of information. After receiving the installation instruction information, the distribution network monitoring device will perform corresponding operations according to the instructions therein. If the configuration status is "confirm installation", the monitoring device will coordinate with relevant departments to install the charging pile; if the configuration status is "reject installation", the monitoring device will record the relevant information and may need to communicate with the applicant to explain the reason.

[0175] By sending installation instructions to the distribution network monitoring equipment, the management server completes the entire evaluation and processing process of the application for access to the new car charging pile. This process forms a closed-loop management, starting from receiving the request for the new functional node, to generating a working status set, judging the load-bearing capacity status, and ending with sending the installation instruction information. This closed-loop management method helps to improve the efficiency and accuracy of power grid management and ensure the safe and stable operation of the power grid.

[0176] It is worth noting that before the management server sends the installation instruction information of the newly added car charging pile to the distribution network monitoring device, if the management server determines that the configuration state is the confirmed installation state, an installation instruction topology map is generated according to the distribution network topology structure and the updated distribution network topology structure. The installation instruction topology map highlights the functional nodes and transmission lines that are different from the distribution network topology structure on the basis of the updated distribution network topology structure, and the installation instruction information includes the installation instruction topology map. Among them, the above-mentioned difference can refer to the addition of a functional node, or it can refer to the change of the transmission line connected to the original functional node, for example, a new transmission line is added, or the transmission line is updated.

[0177] Specifically, the management server determines that the configuration status of the newly added car charging pile is the confirmed installation status based on the analysis of the previous working status set. This is based on the results of the simulated stress quantification test, which ensures that the power grid can maintain stable operation after the new load is connected. Next, the management server begins to generate an installation indication topology map. This process involves comparing the original distribution network topology with the updated distribution network topology. The main purpose of the installation indication topology map is to highlight the differences between the two, especially the newly added functional nodes (i.e., the newly added car charging piles) and the newly added or modified transmission lines to connect this new node. Specifically including:

[0178] Functional node highlighting: When updating the distribution network topology, the management server will highlight the newly added car charging pile nodes and other functional nodes directly connected to them (such as substations, switch stations, etc.) to quickly identify the location and connection status of the newly added loads.

[0179] Transmission line highlighting: In addition to functional nodes, the management server will also highlight the transmission lines related to the newly added loads, including the newly added transmission lines and the original transmission lines modified due to the newly added loads. This helps relevant personnel understand the changes in the grid structure and the impact of the newly added loads on the overall layout of the grid.

[0180] Finally, the management server sends the generated installation instruction topology map to the distribution network monitoring device as part of the installation instruction information. This installation instruction information not only includes the configuration status of the charging pile (confirming the installation), but also includes a detailed topology map, which shows the changes in the grid structure in an intuitive way. After receiving this detailed installation instruction information, the distribution network monitoring device can immediately understand the installation location, connection status and changes in the grid structure of the newly added charging piles, so as to more accurately guide the on-site installation work. At the same time, this information can also be used as a reference for subsequent grid operation and management.

[0181] The installation indication topology diagram highlights the functional nodes and transmission lines that are different from the original distribution network topology structure based on the updated distribution network topology structure. This intuitive display method enables distribution network monitoring equipment and related personnel to quickly understand the changes in the grid structure, especially the location and connection of new loads (such as car charging piles). This helps reduce misunderstandings and communication costs and improve work efficiency.

[0182] In addition, through the installation indication topology map, on-site installers can accurately find the installation location of the newly added charging piles, as well as other functional nodes and transmission lines connected to them. This precise guidance helps ensure the smooth progress of the installation work, avoids installation errors or omissions, and thus improves the quality and safety of the installation. In addition, the process of generating the installation indication topology map is also a comprehensive review of the changes in the grid structure. By comparing the original distribution network topology and the updated topology, managers can have a clearer understanding of the current status and future needs of the grid. This helps to optimize the configuration of grid resources, such as reasonably arranging the direction and capacity of transmission lines, and adjusting the layout of functional nodes, thereby improving the overall operation efficiency and economic benefits of the grid.

[0183] Then, the installation indication topology map is sent to the distribution network monitoring equipment as part of the installation indication information, realizing the closed-loop management of the power grid planning and installation process. This automated management method helps to improve the intelligent level of power grid management, reduce the time delay of manual decision-making and information transmission, and improve the response speed of the power grid to the new load. At the same time, through real-time monitoring and intelligent management, it helps to timely discover and solve potential problems in the operation of the power grid and ensure the stable operation of the power grid. In addition, the generation and application of the installation indication topology map also helps to enhance the reliability and stability of the power grid. By accurately guiding the installation work and optimizing the allocation of power grid resources, the fault points and weak links in the operation of the power grid can be reduced. When a fault occurs in the power grid, the fault location and recovery work can be carried out more quickly, reducing the impact of the fault on the overall operation of the power grid.

[0184] Furthermore, after the management server sends the installation instruction information of the newly added car charging pile to the distribution network monitoring device, it can also obtain the installation instruction of the newly added function node through the first function node, and send the installation instruction of the newly added function node to the management server, and the installation instruction of the newly added function node includes the installation time. The management server controls the function node to be coordinated and the transmission line to be switched to the installation mode at the installation time according to the installation time information, wherein the function node to be coordinated is the function node highlighted in the installation instruction topology diagram, and the transmission line to be transmitted is the transmission line highlighted in the installation instruction topology diagram.

[0185] Specifically, the installation instructions of the newly added functional node (here, the newly added car charging pile) are obtained through the first functional node in the distribution network (such as the distribution network monitoring device). This instruction may be triggered on-site by the installer, or automatically generated by the distribution network monitoring device according to the installation plan. The installation instruction contains key installation time information, which is crucial for subsequent steps.

[0186] After obtaining the installation instruction of the new functional node, the first functional node sends this instruction to the management server. The management server receives and parses the instruction, paying special attention to the installation time information. After receiving the installation instruction and parsing the installation time, the management server begins to perform a series of preparatory operations to ensure that the installation of the new car charging pile can proceed smoothly. First, the management server identifies the functional nodes highlighted in the installation instruction topology diagram, which are called "functional nodes to be coordinated". These nodes need to communicate or transmit power with the new charging piles during the installation process, so they need to be in a specific mode (ie, "installation mode", for example, it can be a cut-off switch) during installation.

[0187] Similarly, the management server also identifies the transmission lines highlighted in the installation indication topology map, which are called "lines to be transmitted". These lines will be used to connect the newly added charging piles to the existing distribution network, so they also need to be in installation mode during installation to perform necessary connections and tests.

[0188] Once the functional nodes and transmission lines to be coordinated are determined, the management server will control these nodes and lines to switch to installation mode in advance according to the installation time information. This may involve suspending the normal operation of certain functional nodes, adjusting the transmission parameters of the transmission line, or starting a specific installation support program.

[0189] After the management server controls the function nodes to be coordinated and the transmission lines to be transmitted to the installation mode, the installer can start the actual installation of the new car charging pile. During this process, the management server may continue to monitor the status of the power grid to ensure that the installation process does not adversely affect the normal operation of the power grid.

[0190] If any problems are encountered during the installation process (such as connection errors, parameter mismatches, etc.), the management server can provide the installer with necessary guidance and support through communication with the first functional node. At the same time, the management server can also record key data and information during the installation process to provide a basis for subsequent analysis and optimization.

[0191] It can be seen that the installation instructions of the newly added function node, including the installation time, are obtained through the first function node, which ensures that the time node of the installation process is clear. Based on this time information, the management server controls the function nodes to be coordinated and the transmission lines to be transmitted to switch to the installation mode in advance, avoiding delays and confusion during the installation process. This method not only improves the installation efficiency, but also ensures the accuracy of the installation and reduces errors caused by time mismatch or insufficient preparation. Before installing the newly added car charging pile, by controlling the function nodes to be coordinated and the transmission lines to be transmitted to enter the installation mode, the normal operating parameters of these nodes and lines can be suspended or adjusted to avoid interference with the installation process. At the same time, this mode switching also helps to maintain the stability and security of the power grid during the installation process and prevent power grid failures or accidents caused by improper installation operations. Through the communication between the management server and the first function node, as well as the remote control of the function nodes to be coordinated and the transmission lines to be transmitted, the intelligent management of the distribution network is realized. This management method not only reduces the need for manual intervention and reduces the risk of human error, but also improves the automation level of power grid management. By accurately controlling the installation time and the status of related nodes and lines, power grid resources can be more reasonably configured to avoid unnecessary waste during the installation process. At the same time, this efficient and accurate installation method also helps to improve user experience, allowing users to use new charging facilities more conveniently and meet the charging needs of new energy vehicles.

[0192] Figure 3 FIG. 1 is a schematic diagram of a power distribution network management system according to an exemplary embodiment of the present application. Figure 3 As shown, the distribution network management system 300 provided in this embodiment includes: a management server 310 and a distribution network topology structure 320, wherein the distribution network topology structure 320 includes a functional node set and a transmission line set, wherein each transmission line in the transmission line set is used to connect two different functional nodes in the functional node set, and the management server 310 is communicatively connected with each functional node in the functional node set;

[0193] Obtaining a new function node request through the first function node in the function node set, and sending the new function node request to the management server 310, wherein the new function node request includes new function node information and new location information;

[0194] The management server 310 generates a newly added functional virtual node according to the newly added location information, and updates the distribution network topology structure 320 according to the newly added functional virtual node to generate an updated distribution network topology structure 320, wherein the updated distribution network topology structure 320 includes an updated functional node set and an updated transmission line set, each transmission line in the updated transmission line set is used to connect two different functional nodes in the updated transmission line set, and the updated functional node set includes the functional node set and the newly added functional virtual node;

[0195] The management server 310 determines a set of operating parameters of the newly added functional nodes according to the newly added functional node information, and uses each operating parameter in the set of operating parameters of the newly added functional nodes to perform a simulated pressure quantification test on the updated distribution network topology structure 320 to determine the operating status of each functional node and the transmission line in the updated distribution network topology structure 320, and generates a set of operating statuses;

[0196] The management server 310 determines the carrying capacity state of the distribution network topology structure 320 according to the working state set, and the carrying capacity state is used to indicate the configuration state of the new function node corresponding to the new function node request.

[0197] Optionally, the management server 310 generates a new function virtual node according to the new location information, and updates the distribution network topology structure 320 according to the new function virtual node to generate an updated distribution network topology structure 320, including:

[0198] The management server 310 determines a newly added transmission line distance set according to the newly added location information and the selected location information of each to-be-selected functional node in the to-be-selected functional node set, wherein the newly added transmission line distance set includes the newly added transmission line distances between the newly added location information and the to-be-selected location information of each to-be-selected functional node in the to-be-selected functional node set;

[0199] If the management server 310 determines that the minimum new transmission line distance in the new transmission line distance set is less than or equal to the preset new transmission line distance threshold, the candidate function node corresponding to the minimum new transmission line distance is determined as the target function node;

[0200] The management server 310 generates a new virtual transmission line according to the new location information and the target location information corresponding to the target function node, and the new virtual transmission line is used to connect the new function virtual node and the target function node;

[0201] The management server 310 updates the distribution network topology structure 320 according to the newly added virtual transmission line and the newly added functional virtual node to generate the updated distribution network topology structure 320 .

[0202] Optionally, after the management server 310 determines the newly added transmission line distance set according to the newly added location information and the candidate location information of each candidate functional node in the candidate functional node set, the method further includes:

[0203] If the management server 310 determines that the minimum new transmission line distance in the new transmission line distance set is greater than the preset new transmission line distance threshold, the candidate function node corresponding to the minimum new transmission line distance is determined to be the first characteristic function node;

[0204] The management server 310 determines a set of adjacent characteristic function nodes of the first characteristic function node according to the distribution network topology structure 320, wherein the adjacent characteristic function nodes in the set of adjacent characteristic function nodes are function nodes directly connected through transmission lines in the distribution network topology structure 320;

[0205] The management server 310 determines that the adjacent feature function node in the adjacent feature function node set that has the shortest distance to the newly added location information is the second feature function node;

[0206] The management server 310 determines a characteristic transmission line according to the first characteristic function node and the second characteristic function node, and generates a third characteristic function node on the characteristic transmission line to divide the characteristic transmission line into a first characteristic transmission line and a second characteristic transmission line, wherein the first characteristic transmission line is used to connect the first characteristic function node and the third characteristic function node, and the second characteristic transmission line is used to connect the second characteristic function node and the third characteristic function node;

[0207] The management server 310 generates a third characteristic transmission line according to the newly added location information and the third characteristic location information corresponding to the third characteristic function node, wherein the third characteristic transmission line is used to connect the newly added function virtual node and the third characteristic function node;

[0208] The management server 310 updates the distribution network topology 320 according to the newly added functional virtual node, the third characteristic functional node, the first characteristic transmission line, the second characteristic transmission line and the third characteristic transmission line to generate the updated distribution network topology 320 .

[0209] Optionally, the management server 310 determines a set of operating condition parameters of the newly added functional node according to the newly added functional node information, and uses each operating condition parameter in the set of operating condition parameters of the newly added functional node to perform a simulated pressure quantification test on the updated distribution network topology structure 320 to determine the working state of each functional node and the transmission line in the updated distribution network topology structure 320, and generates a working state set, including:

[0210] The management server 310 obtains historical operation data of the distribution network topology 320, wherein the historical operation data includes historical operation monitoring parameters of each functional node in the functional node set and each transmission line in the transmission line set at each monitoring time;

[0211] The management server 310 determines a set of extreme operating condition parameters of the distribution network topology 320 according to the historical operation data;

[0212] The management server 310 uses the newly added functional node operating condition parameter set and the extreme operating condition parameter set as operating condition input parameters for the updated distribution network topology structure 320 to determine the operating status of each functional node and transmission line in the updated distribution network topology structure 320 and generate the operating status set.

[0213] Optionally, the newly added functional node is a newly added automobile charging pile, and the newly added functional node operating condition parameter set includes the maximum output power of the newly added automobile charging pile; the management server 310 obtains the historical operation data of the distribution network topology structure 320, including:

[0214] The management server 310 obtains the device function node adjacent to the newly added vehicle charging pile in the updated distribution network topology structure 320 and the device connection transmission line used to connect the newly added vehicle charging pile with the device function node, and the function node set includes the device function node;

[0215] The management server 310 obtains historical operating data of the device functional nodes and the transmission lines connected to the devices, and the set of extreme operating condition parameters includes the maximum operating voltage and the maximum operating current of the device functional nodes and the transmission lines connected to the devices, wherein the operating condition input parameters for updating the distribution network topology structure 320 include the maximum output power, the maximum operating voltage and the maximum operating current.

[0216] Optionally, the management server 310 determines the carrying capacity state of the distribution network topology structure 320 according to the working state set, including:

[0217] If the management server 310 determines that there is an abnormal working state in the working state set, it determines that the carrying capacity state is a state with a carrying risk, and the abnormal working state is a working state corresponding to a simulation test result of a functional node or a transmission line in the updated distribution network topology structure 320 being greater than a preset result threshold;

[0218] If the management server 310 determines that the abnormal working state does not exist in the working state set, it determines that the carrying capability state is a carrying safety state.

[0219] Optionally, the first functional node is a distribution network monitoring device; correspondingly, after the management server 310 determines the carrying capacity state of the distribution network topology structure 320 according to the working state set, it also includes:

[0220] The management server 310 sends the installation instruction information of the newly added vehicle charging pile to the distribution network monitoring device, and the installation instruction information includes the configuration status of the newly added functional node, and the configuration status is a confirmed installation status or a rejected installation status.

[0221] Figure 4 is a schematic diagram of the structure of an electronic device according to an exemplary embodiment of the present application. Figure 4 As shown, an electronic device 400 provided in this embodiment includes: a processor 401 and a memory 402; wherein:

[0222] The memory 402 is used to store computer programs, and the memory may also be a flash memory.

[0223] The processor 401 is used to execute the execution instructions stored in the memory to implement each step in the above method. For details, please refer to the relevant description in the above method embodiment.

[0224] Optionally, the memory 402 may be independent or integrated with the processor 401 .

[0225] When the memory 402 is a device independent of the processor 401, the electronic device 400 may further include:

[0226] The bus 403 is used to connect the memory 402 and the processor 401 .

[0227] This embodiment further provides a readable storage medium, in which a computer program is stored. When at least one processor of an electronic device executes the computer program, the electronic device executes the methods provided in the above-mentioned various implementation modes.

[0228] This embodiment also provides a program product, which includes a computer program stored in a readable storage medium. At least one processor of the electronic device can read the computer program from the readable storage medium, and at least one processor executes the computer program so that the electronic device implements the methods provided in the above various embodiments.

[0229] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the claims.

[0230] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A method for quantitatively evaluating the carrying capacity of a distribution network, characterized in that: Applied to a distribution network management system, the distribution network management system includes a management server and a distribution network topology structure, the distribution network topology structure includes a functional node set and a transmission line set, each transmission line in the transmission line set is used to connect two different functional nodes in the functional node set, and the management server is communicatively connected with each functional node in the functional node set; the method includes: Obtaining a request for a newly added function node through a first function node in the function node set, and sending the request for a newly added function node to the management server, wherein the request for a newly added function node includes information about the newly added function node and newly added location information; The management server generates a newly added functional virtual node according to the newly added location information, and updates the distribution network topology structure according to the newly added functional virtual node to generate an updated distribution network topology structure, wherein the updated distribution network topology structure includes an updated functional node set and an updated transmission line set, each transmission line in the updated transmission line set is used to connect two different functional nodes in the updated transmission line set, and the updated functional node set includes the functional node set and the newly added functional virtual node; The management server determines a set of operating condition parameters of the newly added function nodes according to the information of the newly added function nodes, and uses each operating condition parameter in the set of operating condition parameters of the newly added function nodes to perform a simulated pressure quantification test on the updated distribution network topology structure to determine the operating status of each functional node and the transmission line in the updated distribution network topology structure, and generates a working status set; The management server determines the carrying capacity state of the distribution network topology structure according to the working state set, wherein the carrying capacity state is used to indicate the configuration state of the newly added function node corresponding to the newly added function node request; The management server generates a new function virtual node according to the new location information, and updates the distribution network topology structure according to the new function virtual node to generate an updated distribution network topology structure, including: The management server determines a newly added transmission line distance set according to the newly added location information and the selected location information of each to-be-selected function node in the to-be-selected function node set, wherein the newly added transmission line distance set includes the newly added transmission line distances between the newly added location information and the to-be-selected location information of each to-be-selected function node in the to-be-selected function node set; If the management server determines that the minimum new transmission line distance in the new transmission line distance set is less than or equal to the preset new transmission line distance threshold, then the candidate function node corresponding to the minimum new transmission line distance is determined as the target function node; The management server generates a newly added virtual transmission line according to the newly added location information and the target location information corresponding to the target functional node, wherein the newly added virtual transmission line is used to connect the newly added functional virtual node and the target functional node; The management server updates the distribution network topology structure according to the newly added virtual transmission line and the newly added functional virtual node to generate the updated distribution network topology structure; After the management server determines the newly added transmission line distance set according to the newly added location information and the candidate location information of each candidate functional node in the candidate functional node set, the method further includes: If the management server determines that the minimum new transmission line distance in the new transmission line distance set is greater than the preset new transmission line distance threshold, then the candidate function node corresponding to the minimum new transmission line distance is determined to be the first characteristic function node; The management server determines a set of adjacent characteristic function nodes of the first characteristic function node according to the distribution network topology structure, wherein the adjacent characteristic function nodes in the set of adjacent characteristic function nodes are function nodes directly connected through transmission lines in the distribution network topology structure; The management server determines that the adjacent feature function node with the shortest distance from the newly added location information in the adjacent feature function node set is the second feature function node; The management server determines a characteristic transmission line according to the first characteristic function node and the second characteristic function node, and generates a third characteristic function node on the characteristic transmission line to divide the characteristic transmission line into a first characteristic transmission line and a second characteristic transmission line, wherein the first characteristic transmission line is used to connect the first characteristic function node and the third characteristic function node, and the second characteristic transmission line is used to connect the second characteristic function node and the third characteristic function node; The management server generates a third characteristic transmission line according to the newly added location information and the third characteristic location information corresponding to the third characteristic function node, wherein the third characteristic transmission line is used to connect the newly added function virtual node and the third characteristic function node; The management server updates the distribution network topology structure according to the newly added function virtual node, the third characteristic function node, the first characteristic transmission line, the second characteristic transmission line and the third characteristic transmission line to generate the updated distribution network topology structure.

2. The method for quantitatively evaluating the load-bearing capacity of a distribution network according to claim 1, characterized in that: The management server determines a set of operating parameters of the newly added function nodes according to the newly added function node information, and uses each operating parameter in the set of operating parameters of the newly added function nodes to perform a simulated pressure quantification test on the updated distribution network topology structure to determine the working state of each functional node and the transmission line in the updated distribution network topology structure, and generates a working state set, including: The management server obtains historical operation data of the distribution network topology structure, wherein the historical operation data includes historical operation monitoring parameters of each functional node in the functional node set and each transmission line in the transmission line set at each monitoring time; The management server determines a set of extreme operating condition parameters of the distribution network topology structure according to the historical operation data; The management server uses the newly added function node operating condition parameter set and the extreme operating condition parameter set as the operating condition input parameters of the updated distribution network topology structure to determine the operating status of each function node and transmission line in the updated distribution network topology structure and generate the operating status set.

3. The method for quantitatively evaluating the load-bearing capacity of a distribution network according to claim 2, characterized in that: The newly added function node is a newly added automobile charging pile, and the newly added function node operating condition parameter set includes the maximum output power of the newly added automobile charging pile; The management server obtains historical operation data of the distribution network topology structure, including: The management server obtains the device function node adjacent to the newly added vehicle charging pile in the updated distribution network topology structure and the device connection transmission line used to connect the newly added vehicle charging pile with the device function node, and the function node set includes the device function node; The management server obtains historical operating data of the device function node and the transmission line connected to the device, and the extreme operating condition parameter set includes the maximum operating voltage and the maximum operating current of the device function node and the transmission line connected to the device, wherein the operating condition input parameters for updating the distribution network topology structure include the maximum output power, the maximum operating voltage and the maximum operating current.

4. The method for quantitatively evaluating the load-bearing capacity of a distribution network according to claim 3, characterized in that: The management server determines the carrying capacity state of the distribution network topology structure according to the working state set, including: If the management server determines that there is an abnormal working state in the working state set, it determines that the carrying capacity state is a state with a carrying risk, and the abnormal working state is a working state corresponding to a simulation test result of a functional node or a transmission line in the updated distribution network topology structure being greater than a preset result threshold; If the management server determines that the abnormal working state does not exist in the working state set, it determines that the carrying capacity state is a carrying safety state.

5. The method for quantitatively evaluating the load-bearing capacity of a distribution network according to claim 4, characterized in that: The first functional node is a distribution network monitoring device; correspondingly, after the management server determines the carrying capacity state of the distribution network topology structure according to the working state set, it also includes: The management server sends installation instruction information of the newly added automobile charging pile to the distribution network monitoring device, and the installation instruction information includes a configuration status of the newly added functional node, and the configuration status is a confirmed installation status or a rejected installation status.

6. A distribution network management system, characterized in that: include: A management server and a distribution network topology structure, wherein the distribution network topology structure includes a functional node set and a transmission line set, each transmission line in the transmission line set is used to connect two different functional nodes in the functional node set, and the management server is communicatively connected with each functional node in the functional node set; Obtaining a request for a newly added function node through a first function node in the function node set, and sending the request for a newly added function node to the management server, wherein the request for a newly added function node includes information about the newly added function node and newly added location information; The management server generates a newly added functional virtual node according to the newly added location information, and updates the distribution network topology structure according to the newly added functional virtual node to generate an updated distribution network topology structure, wherein the updated distribution network topology structure includes an updated functional node set and an updated transmission line set, each transmission line in the updated transmission line set is used to connect two different functional nodes in the updated transmission line set, and the updated functional node set includes the functional node set and the newly added functional virtual node; The management server determines a set of operating condition parameters of the newly added function nodes according to the information of the newly added function nodes, and uses each operating condition parameter in the set of operating condition parameters of the newly added function nodes to perform a simulated pressure quantification test on the updated distribution network topology structure to determine the operating status of each functional node and the transmission line in the updated distribution network topology structure, and generates a working status set; The management server determines the carrying capacity state of the distribution network topology structure according to the working state set, wherein the carrying capacity state is used to indicate the configuration state of the newly added function node corresponding to the newly added function node request; The management server generates a new function virtual node according to the new location information, and updates the distribution network topology structure according to the new function virtual node to generate an updated distribution network topology structure, including: The management server determines a newly added transmission line distance set according to the newly added location information and the selected location information of each to-be-selected function node in the to-be-selected function node set, wherein the newly added transmission line distance set includes the newly added transmission line distances between the newly added location information and the to-be-selected location information of each to-be-selected function node in the to-be-selected function node set; If the management server determines that the minimum new transmission line distance in the new transmission line distance set is less than or equal to the preset new transmission line distance threshold, then the candidate function node corresponding to the minimum new transmission line distance is determined as the target function node; The management server generates a newly added virtual transmission line according to the newly added location information and the target location information corresponding to the target functional node, wherein the newly added virtual transmission line is used to connect the newly added functional virtual node and the target functional node; The management server updates the distribution network topology structure according to the newly added virtual transmission line and the newly added functional virtual node to generate the updated distribution network topology structure; After the management server determines the newly added transmission line distance set according to the newly added location information and the candidate location information of each candidate functional node in the candidate functional node set, the method further includes: If the management server determines that the minimum new transmission line distance in the new transmission line distance set is greater than the preset new transmission line distance threshold, then the candidate function node corresponding to the minimum new transmission line distance is determined to be the first characteristic function node; The management server determines a set of adjacent characteristic function nodes of the first characteristic function node according to the distribution network topology structure, wherein the adjacent characteristic function nodes in the set of adjacent characteristic function nodes are function nodes directly connected through transmission lines in the distribution network topology structure; The management server determines that the adjacent feature function node with the shortest distance from the newly added location information in the adjacent feature function node set is the second feature function node; The management server determines a characteristic transmission line according to the first characteristic function node and the second characteristic function node, and generates a third characteristic function node on the characteristic transmission line to divide the characteristic transmission line into a first characteristic transmission line and a second characteristic transmission line, wherein the first characteristic transmission line is used to connect the first characteristic function node and the third characteristic function node, and the second characteristic transmission line is used to connect the second characteristic function node and the third characteristic function node; The management server generates a third characteristic transmission line according to the newly added location information and the third characteristic location information corresponding to the third characteristic function node, wherein the third characteristic transmission line is used to connect the newly added function virtual node and the third characteristic function node; The management server updates the distribution network topology structure according to the newly added function virtual node, the third characteristic function node, the first characteristic transmission line, the second characteristic transmission line and the third characteristic transmission line to generate the updated distribution network topology structure.

7. The distribution network management system according to claim 6, characterized in that: The management server determines a set of operating parameters of the newly added function nodes according to the newly added function node information, and uses each operating parameter in the set of operating parameters of the newly added function nodes to perform a simulated pressure quantification test on the updated distribution network topology structure to determine the working state of each functional node and the transmission line in the updated distribution network topology structure, and generates a working state set, including: The management server obtains historical operation data of the distribution network topology structure, wherein the historical operation data includes historical operation monitoring parameters of each functional node in the functional node set and each transmission line in the transmission line set at each monitoring time; The management server determines a set of extreme operating condition parameters of the distribution network topology structure according to the historical operation data; The management server uses the newly added function node operating condition parameter set and the extreme operating condition parameter set as the operating condition input parameters of the updated distribution network topology structure to determine the operating status of each function node and transmission line in the updated distribution network topology structure and generate the operating status set.

8. The distribution network management system according to claim 7, characterized in that: The newly added function node is a newly added automobile charging pile, and the newly added function node operating condition parameter set includes the maximum output power of the newly added automobile charging pile; The management server obtains historical operation data of the distribution network topology structure, including: The management server obtains the device function node adjacent to the newly added vehicle charging pile in the updated distribution network topology structure and the device connection transmission line used to connect the newly added vehicle charging pile with the device function node, and the function node set includes the device function node; The management server obtains historical operating data of the device function node and the transmission line connected to the device, and the extreme operating condition parameter set includes the maximum operating voltage and the maximum operating current of the device function node and the transmission line connected to the device, wherein the operating condition input parameters for updating the distribution network topology structure include the maximum output power, the maximum operating voltage and the maximum operating current.

9. The distribution network management system according to claim 8, characterized in that: The management server determines the carrying capacity state of the distribution network topology structure according to the working state set, including: If the management server determines that there is an abnormal working state in the working state set, it determines that the carrying capacity state is a state with a carrying risk, and the abnormal working state is a working state corresponding to a simulation test result of a functional node or a transmission line in the updated distribution network topology structure being greater than a preset result threshold; If the management server determines that the abnormal working state does not exist in the working state set, it determines that the carrying capacity state is a carrying safety state.

10. The distribution network management system according to claim 9, characterized in that: The first functional node is a distribution network monitoring device; correspondingly, after the management server determines the carrying capacity state of the distribution network topology structure according to the working state set, it also includes: The management server sends installation instruction information of the newly added automobile charging pile to the distribution network monitoring device, and the installation instruction information includes a configuration status of the newly added functional node, and the configuration status is a confirmed installation status or a rejected installation status.

11. An electronic device, characterized in that: include: processor; as well as, A memory, configured to store executable instructions of the processor; The processor is configured to perform the method of any one of claims 1 to 5 by executing the executable instructions.

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