Network line current out-of-limit load optimization method, system, device, medium and product

Abstract

The present application relates to the technical field of power distribution network load management, and discloses a power distribution network line current out-of-limit load optimization method, system, device, medium and product, the method comprising: obtaining an overload out-of-limit line in a power distribution network, and identifying all tie lines having a physical tie relationship with the overload out-of-limit line in combination with line topology information of the power distribution network; obtaining operation information of each tie line, and selecting effective tie lines from the multiple tie lines according to the operation information; determining a plurality of transferable power supply paths according to the tie relationship between the effective tie lines and the overload out-of-limit line; performing multi-objective transferable power supply capacity evaluation on each transferable power supply path, and selecting an optimal transferable power supply path from the plurality of transferable power supply paths according to the evaluation result; and performing a load transfer operation on the overload out-of-limit line according to the optimal transferable power supply path, thereby significantly enhancing the dynamic adaptability and overall robustness of the power distribution network.

Description

Technical Field

[0001] This invention relates to the field of distribution network load management technology, and in particular to a method, system, equipment, medium and product for optimizing distribution network line current exceeding the limit load. Background Technology

[0002] As a key carrier for the large-scale access of distributed energy resources and the absorption of diversified loads, the distribution network undertakes the core responsibility of distributing electricity from the transmission network to end users. Its operating status directly affects the reliability of power supply and power quality. At the same time, the end load is showing characteristics of rapid growth and uneven spatial and temporal distribution. Coupled with the high penetration of distributed new energy sources and the concentrated access of new loads such as electric vehicle charging stations, problems such as distribution network line overload and voltage exceeding limits are becoming increasingly prominent, seriously threatening the safe and stable operation of the power grid.

[0003] Currently, overloaded lines are manually inspected and dispatched based on experience. However, distribution network lines are often overloaded due to the large number of users and the high rate of renewable energy generation. Manual dispatching is not only inefficient, but also makes it difficult to fully consider safety margins, user scale thresholds, and renewable energy penetration rates. It can also easily lead to safety issues such as voltage instability and protection malfunctions. Summary of the Invention

[0004] In view of this, in order to solve the above-mentioned technical problems, the present invention provides a method, system, equipment, medium and product for optimizing the overload of distribution network line current.

[0005] The first aspect of this invention provides a method for optimizing the overload of distribution network lines, comprising:

[0006] Obtain overload and limit-crossing lines within the distribution network, and in conjunction with the line topology information of the distribution network, identify all interconnecting lines that have a physical connection with the overload and limit-crossing lines;

[0007] Obtain the operation information of each of the aforementioned communication lines, and filter out the valid communication lines from the multiple communication lines based on the operation information;

[0008] Based on the connection relationship between the effective connection lines and the overload and limit-crossing lines, several transferable power supply paths are determined;

[0009] A multi-objective power transfer capability assessment is performed on each of the aforementioned power transferable paths, and the optimal power transfer path is selected from several of the aforementioned power transferable paths based on the assessment results;

[0010] The load transfer operation for the overloaded and over-limited line is performed according to the optimal power transfer path.

[0011] In one embodiment, the step of acquiring overloaded and overlimited lines within the distribution network and, in conjunction with the line topology information of the distribution network, identifying all interconnecting lines that have a physical connection with the overloaded and overlimited lines includes:

[0012] Obtain the current carrying capacity information of each line in the power distribution network, and identify the overloaded and limit-crossing lines based on the current carrying capacity information;

[0013] Obtain the line topology information of the power distribution network, determine all adjacent lines that have physical connection points with the overload and limit-crossing lines and have controllable remote control switches based on the line topology information, and use the adjacent lines as the connection lines.

[0014] In one embodiment, the operational information includes temporary power supply over-limit records, load rate, heavy overload history records, and load limit flag records;

[0015] The step of selecting valid communication lines from multiple communication lines based on the operational information includes:

[0016] From the multiple aforementioned connection lines, the connection line that does not contain any records of temporary power transfer exceeding the limit is selected as the first candidate connection line;

[0017] Among the multiple first candidate contact lines, contact lines with a load rate greater than a preset load rate threshold are eliminated to obtain second candidate contact lines.

[0018] Among the multiple second candidate contact lines, contact lines that have the above-mentioned heavy overload history record or the above-mentioned load limit flag record are removed to obtain the effective contact lines.

[0019] In one embodiment, based on the connection relationship between the effective connection line and the overload / limit-crossing line, several transferable power supply paths are determined, including:

[0020] Traverse each of the valid communication lines and identify multiple controllable remote control switches between the valid communication line and the overload limit line;

[0021] Obtain the maximum load transfer value for each of the controllable remote control switches, and determine the remote control switch with the largest maximum load transfer value as the preferred remote control switch;

[0022] Starting from the preferred remote control switch, all remote control switches along the effective connection line toward the connection point are traversed sequentially until all remote control switches that meet the preset load transfer constraints are found as power transfer switches; wherein, the preset load transfer constraints include at least the number of power supply users after power transfer not exceeding a preset user number threshold or the new energy penetration rate not exceeding a preset penetration threshold.

[0023] For each power transfer switch, the transferable power supply path is constructed based on the connection relationship between the effective interconnection line, the power transfer switch, and the overload / limit-crossing line.

[0024] In one embodiment, the step of performing a multi-objective power transfer capability assessment on each of the power transferable paths, and selecting the optimal power transfer path from a plurality of power transferable paths based on the assessment results, includes:

[0025] If there is one transferable power supply path, then the transferable power supply path shall be taken as the optimal transferable power supply path.

[0026] If there are multiple transferable power supply paths, then execute:

[0027] From the multiple available power transfer paths, all available power transfer paths that satisfy the condition that the number of power users after power transfer does not exceed a preset user number threshold and the new energy penetration rate does not exceed a preset penetration threshold are selected as the first preferred power transfer path. From the first preferred power transfer path, the path with the largest reduction in line loss is selected as the optimal power transfer path.

[0028] If the first preferred power transfer path does not exist, then all the available power transfer paths that meet the condition that the new energy penetration rate does not exceed a preset penetration rate threshold are selected as the second preferred power transfer path, and the path with the largest reduction in line loss is selected from the second preferred power transfer path as the optimal power transfer path.

[0029] If the second preferred power transfer path does not exist, the path with the lowest new energy penetration rate among multiple available power transfer paths shall be selected as the optimal power transfer path.

[0030] In one embodiment, the method further includes:

[0031] Among the several transferable power supply paths, the transferable power supply path other than the optimal transferable power supply path is used as a backup transferable power supply path;

[0032] A power transfer execution list is generated based on the overloaded and over-limited lines, the optimal power transfer path, and the backup power transfer path.

[0033] Secondly, the present invention also provides a distribution network line current overload optimization system, comprising:

[0034] The interconnection line determination module is used to acquire overloaded and overlimited lines in the distribution network, and in combination with the line topology information of the distribution network, identify all interconnection lines that have a physical connection with the overloaded and overlimited lines.

[0035] The line filtering module is used to obtain the operation information of each of the communication lines and filter out the valid communication lines from multiple communication lines based on the operation information.

[0036] The power transfer screening module is used to determine several power transfer paths based on the connection relationship between the effective connection lines and the overload and overlimit lines;

[0037] The power transfer optimization module is used to perform multi-objective power transfer capability evaluation on each of the power transferable paths, and select the optimal power transfer path from several power transferable paths based on the evaluation results;

[0038] The load transfer module is used to perform load transfer operations on the overloaded and over-limited lines according to the optimal power transfer path.

[0039] Thirdly, the present invention also provides an electronic device, the electronic device including a memory and a processor, the memory storing a computer program, the computer program being executed by the processor causing the processor to perform the steps of the distribution network line current overload optimization method as described in the first aspect.

[0040] Fourthly, the present invention also provides a computer-readable storage medium having a computer program stored thereon, which, when executed, implements the steps of the distribution network line current overload optimization method as described in the first aspect.

[0041] Fifthly, the present invention also provides a computer program product, the computer program product comprising a computer program stored on a non-transitory computer-readable storage medium, the computer program comprising program instructions, wherein, when the program instructions are executed by a computer, the computer performs the steps of the distribution network line current overload optimization method as described in the first aspect.

[0042] As can be seen from the above technical solution, this invention comprehensively acquires information on overloaded or over-limited operating lines in the distribution network system, identifies multiple interconnecting lines associated with these overloaded or over-limited lines, and then effectively filters out effective interconnecting lines with actual power transfer capabilities from these interconnecting lines. Based on the actual connection and electrical relationship between the effective interconnecting lines and the overloaded or over-limited lines, multiple feasible power transfer paths are identified. For each feasible power transfer path, a comprehensive power transfer capability assessment with multi-dimensional optimization objectives is conducted to select the optimal power transfer path scheme. This method eliminates the need for traditional manual intervention and experience-based judgment, enabling precise and automated decision-making for load transfer strategies, significantly improving operation and maintenance efficiency and response speed. Simultaneously, by comprehensively evaluating the actual power supply capability of each feasible power transfer path from multiple dimensions, the final evaluation result comprehensively considers and optimizes multiple operational objectives, thereby significantly enhancing the dynamic adaptability and overall robustness of the distribution network in the face of load fluctuations, fault disturbances, and other situations. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 This is an application environment diagram of a method for optimizing the overload of distribution network line current according to an embodiment of the present invention;

[0045] Figure 2 A flowchart of a method for optimizing the overload of distribution network line current according to an embodiment of the present invention;

[0046] Figure 3 This is a schematic diagram of a distribution network line current overload optimization system provided in an embodiment of the present invention;

[0047] Figure 4 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention. Detailed Implementation

[0048] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0049] As a key physical carrier and operating platform supporting the large-scale access of distributed energy resources and the efficient absorption of diversified loads, the distribution network bears the core responsibility of safely, reliably, and economically distributing electricity from the high-voltage transmission network to various end users. Its daily operating status and management level directly determine the power supply reliability and power quality for a large number of users. Currently, with the continuous development of the economy and society, end-user electricity load is showing significant characteristics of rapid total growth and highly uneven spatial and temporal distribution. At the same time, distributed photovoltaic, wind power, and other new energy sources are being connected to the distribution network in large quantities with a high penetration rate. In addition, the centralized and large-scale grid connection of new loads such as electric vehicle charging stations and data centers has profoundly changed the power flow distribution, voltage levels, and equipment load conditions of the distribution network. This has led to increasingly frequent and prominent problems such as line and transformer overload and node voltage exceeding limits. These challenges not only affect local power supply capacity and power quality but also pose a serious threat to the safe, stable, and reliable operation of the regional and even larger-scale power grid.

[0050] Currently, handling overloaded lines mainly relies on manual inspections and experience-based dispatching. However, with the continuous growth in the number of users in the distribution network and the widespread integration of new energy power generation (such as photovoltaic and wind power), line overload is becoming increasingly frequent. Simply relying on manual dispatching is not only inefficient and unable to meet the demand for rapid response, but also often fails to comprehensively and systematically consider the safety margin of lines, the reasonable threshold of user scale, and the complex impacts of high-proportion new energy penetration. These limitations of dispatching methods can easily lead to a series of safety hazards in grid operation, such as voltage instability and malfunctioning protection devices, thereby affecting power supply reliability and overall system safety.

[0051] To address the above problems, this application provides a method for optimizing distribution network line current exceeding limits, which can be applied to applications such as... Figure 1In the application environment shown, terminal 101 communicates with server 102 via a network. A data storage system can store the data that server 102 needs to process. The data storage system can be integrated onto server 102 or placed on a cloud or other network server. Terminal 101 or server 102 executes a method for optimizing the overload load of distribution network lines. This method includes: acquiring overloaded lines within the distribution network and, in conjunction with the distribution network's line topology information, identifying all interconnecting lines with physical connections to the overloaded lines; acquiring the operating information of each interconnecting line and selecting effective interconnecting lines from multiple interconnecting lines based on the operating information; determining several transferable power supply paths based on the connections between effective interconnecting lines and overloaded lines; performing a multi-objective power transfer capability assessment on each transferable power supply path and selecting the optimal power transfer path from several transferable power supply paths based on the assessment results; and performing load transfer operations on the overloaded lines based on the optimal power transfer path.

[0052] Terminal 101 can be, but is not limited to, various personal computers, laptops, smartphones, and tablets.

[0053] Server 102 can be a standalone physical server, a server cluster or distributed system consisting of multiple physical servers, or a cloud server that provides cloud computing services.

[0054] like Figure 2 As shown in the figure, this application provides a method for optimizing the overload of distribution network line current, which is applied to... Figure 1 Taking terminal 101 or server 102 as an example, the explanation includes the following steps S1 to S5. Wherein:

[0055] Step S1: Obtain overload and overlimit lines in the distribution network, and in conjunction with the line topology information of the distribution network, identify all connecting lines that have a physical connection with the overload and overlimit lines.

[0056] Overloaded lines are distribution network feeders whose current carrying capacity exceeds their rated current threshold and the duration exceeds the set alarm duration. Line topology information describes the electrical connection relationships between lines in the distribution network, including switch status, tie point location, and topological connectivity, and is used to support tie path identification and power transfer feasibility assessment.

[0057] By analyzing the line topology and relationships within the distribution network, we can accurately identify the physical connection nodes and specific electrical paths of each line that exceeds the operating limits. This allows us to comprehensively obtain all backup connection lines that have a physical connection with the line (direct electrical connection or indirect connection through other lines), ensuring that the final list of connection lines fully covers all potential paths that could serve as load transfer channels.

[0058] It should be noted that for overloaded and over-limit lines without configured connecting lines, the corresponding opposite line information field should remain empty and directly marked as "No connecting line." In this case, no further processing is required, and relevant alarm prompts should be triggered. For distribution network lines with multiple connecting records, each connecting record should form an independent connecting list record to ensure that all connecting relationships are listed completely.

[0059] Step S2: Obtain the operation information of each connection line, and select the valid connection lines from multiple connection lines based on the operation information.

[0060] Among them, a valid connection line refers to a connection line whose current operating status meets the conditions for power transfer, including but not limited to: 1) Excluding the record of distribution network line exceeding the limit caused by temporary power transfer, so as to avoid interference with the analysis of normal operation; 2) The power transfer capacity of the connection line meets the conditions; 3) There is no connection line involved in the expected heavy overload section of the day, or the expected heavy overload section of the past 7 days, or there is no main grid monthly load control plan control site.

[0061] Step S3: Based on the connection relationship between the effective connection lines and the overload and overlimit lines, determine several transferable power supply paths.

[0062] Specifically, in a power system, a connection relationship refers to the electrical connection path established between an overloaded or over-limited line and a valid connection line when an overloaded or over-limited line experiences an overload, via a controllable remote switch. This path then forms an electrical path available for load transfer, serving as the physical channel upon which the load transfer operation depends. When constructing such a transferable power path, all electrical safety constraints must be strictly adhered to to ensure the safety and reliability of the entire operation.

[0063] Step S4: Perform a multi-objective power transfer capability assessment on each available power transfer path, and select the optimal power transfer path from several available power transfer paths based on the assessment results.

[0064] This application embodiment evaluates the power transfer capability of each power transfer path from multiple dimensions, and selects the power transfer path with the largest capability as the optimal power transfer path by comprehensively evaluating the power transfer capability under multiple dimensions.

[0065] Preferably, based on a comprehensive evaluation of each available power transfer path, multiple key dimensions such as load factor, total number of power users, proportion of renewable energy access, and line loss rate are considered, and detailed analysis and calculations are performed based on these evaluation indicators. Finally, by comprehensively comparing and weighing the performance across these multiple dimensions, the optimal solution is selected from all possible power transfer paths to maximize power supply efficiency and system reliability.

[0066] Step S5: Perform load transfer operation on overloaded and over-limited lines according to the optimal power transfer path.

[0067] After determining and selecting the optimal power transfer path, a series of remote-controlled switching operations will be executed according to this path plan to establish a stable electrical connection channel between overloaded lines and lines with effective interconnection capabilities. The core purpose of this operation is to alleviate the operational pressure on overloaded lines and improve the power supply reliability of the grid by transferring loads to them. Throughout the load transfer process, monitoring equipment is used to track and collect changes in key electrical parameters such as current, voltage, and power in real time to ensure that the electrical quantities at each node of the grid are always maintained within the preset safety threshold range, preventing new over-limits or faults caused by the transfer operation. Once the load transfer is successfully completed, the system must immediately update the topology connection status of the distribution network synchronously and refresh the real-time map of the entire network load distribution accordingly to accurately reflect the current actual operating structure and load conditions of the grid.

[0068] It should be noted that this application embodiment comprehensively acquires information on overloaded or over-limit operating lines in the distribution network system, identifies multiple interconnecting lines associated with these overloaded or over-limit lines, and then effectively filters out effective interconnecting lines with actual power transfer capabilities from these interconnecting lines. Based on the actual connection and electrical relationship between the effective interconnecting lines and the overloaded or over-limit lines, multiple feasible power transfer paths are identified. For each feasible power transfer path, a comprehensive power transfer capability assessment based on multi-dimensional optimization objectives is conducted to select the optimal power transfer path scheme. This method eliminates the need for traditional manual intervention and experience-based judgment, enabling precise and automated decision-making for load transfer strategies, significantly improving operation and maintenance efficiency and response speed. Simultaneously, by comprehensively evaluating the actual power supply capability of each feasible power transfer path from multiple dimensions, it ensures that the final assessment result comprehensively considers and optimizes multiple operational objectives, thereby significantly enhancing the dynamic adaptability and overall robustness of the distribution network in the face of load fluctuations, fault disturbances, and other situations.

[0069] In some embodiments, the process involves acquiring overload and overlimit lines within the distribution network and, in conjunction with the distribution network's line topology information, identifying all interconnecting lines that have a physical connection with the overload and overlimit lines. This includes: acquiring the current-carrying capacity information of each line in the distribution network and identifying the overload and overlimit lines based on the current-carrying capacity information; acquiring the distribution network's line topology information and determining all adjacent lines that have a physical connection point with the overload and overlimit lines and are equipped with controllable remote control switches based on the line topology information, and designating the adjacent lines as interconnecting lines.

[0070] Among them, current carrying capacity information refers to the maximum current value that a power line can carry under long-term stable operation conditions. It is mainly determined by a variety of physical characteristics such as conductor material, conductor cross-sectional area, ambient temperature and laying method, and is the fundamental basis for judging whether the line is overloaded or exceeds the limit.

[0071] For example, based on the detailed data from the daily report on the operating load of distribution network lines the previous day, we systematically extract the load information of each line and compare and screen it according to pre-set load safety limits. This allows us to accurately identify all distribution network lines currently exceeding the prescribed load limits, and then compile a complete and accurate list of overloaded and over-limit lines. Furthermore, we retrieve and integrate the distribution network's line topology and equipment connection data to deeply analyze the connection logic and power supply paths between various electrical components within the distribution network. Through topology correlation analysis, we can identify all adjacent feeders directly connected to the identified overloaded and over-limit lines via tie switches, thus accurately obtaining the tie relationships corresponding to each overloaded and over-limit line. Finally, based on the above analysis results, we integrate and generate a comprehensive detailed list of tie lines containing all relevant overloaded and over-limit lines and their tie objects, providing a clear and reliable basis for subsequent load transfer, operation mode adjustments, and grid optimization scheduling.

[0072] It should be noted that the selection of connecting lines not only focuses on physical connectivity, but also needs to consider the availability, real-time status and operating permissions of their remote control switches to ensure that the transfer operation is feasible. If a connecting switch is under maintenance, faulty or has restricted access, the line is removed from the candidate set to ensure that the selected connecting path is controllable, operable and closed-loop in actual scheduling.

[0073] In some embodiments, operational information includes temporary power supply over-limit records, load rate, heavy overload history records, and load limit flag records. The temporary power supply over-limit records record line over-limit events caused by temporary load transfer during temporary power supply, to avoid interfering with normal analysis. The load rate reflects the real-time ratio of the line's current load to its rated carrying capacity. The heavy overload history records are historical records of the expected heavy overload sections for the current day and the expected heavy overload sections for the past 7 days. The load limit flag records are load limit flags explicitly marked in the main grid's monthly load control plan requirements, used to identify sites requiring load limits and their corresponding lines, ensuring that the selection of tie lines strictly matches scheduling constraints.

[0074] It should be noted that temporary power supply overrun records, heavy overload history records, and load limit flag records are all pre-recorded. In this case, valid interconnection lines are selected from multiple interconnection lines based on operational information, including: selecting interconnection lines without temporary power supply overrun records as first candidate interconnection lines; removing interconnection lines with load rates greater than a preset load rate threshold from among the multiple first candidate interconnection lines to obtain second candidate interconnection lines; and removing interconnection lines with heavy overload history records or load limit flag records from among the multiple second candidate interconnection lines to obtain valid interconnection lines.

[0075] It should be noted that when checking multiple connection lines, it is necessary to specifically identify and exclude lines involved in temporary over-limit records caused by temporary power transfer operations. The purpose of this is to effectively prevent over-limit lines caused by temporary power transfer from being mistakenly identified as usable connection paths, thereby ensuring a more accurate and reliable assessment of usable connection lines.

[0076] Obtain the monthly peak load rate data for the opposite line after excluding temporary power transfer factors. If the load rate is greater than 80%, the connection record is determined not to participate in the subsequent power transfer capacity analysis, and the conclusion is marked as "insufficient power transfer capacity of the connection line," and the connection line needs to be excluded.

[0077] In addition, verify whether the connection line falls under any of the following three control categories: power sections predicted to experience heavy overload issues on the current day, power sections expected to experience heavy overload issues within the past seven days, and sites listed in the main grid's monthly load control plan that require control. If verification confirms that the connection line falls within any of the above control categories, the connection record should be excluded from subsequent analysis processes, and the connection line should be removed.

[0078] In some embodiments, based on the connection relationship between valid connection lines and overload / limit-crossing lines, several transferable power supply paths are determined, including: traversing each valid connection line and identifying multiple controllable remote control switches between the valid connection line and the overload / limit-crossing line; obtaining the upper limit value of the transferable load for each controllable remote control switch and determining the remote control switch with the largest upper limit value of the transferable load as the preferred remote control switch; starting from the preferred remote control switch, sequentially traversing all remote control switches along the path from the valid connection line towards the connection point until all remote control switches that satisfy the preset load transfer constraints are found as transferable power supply switches; wherein, the preset load transfer constraints include at least the number of power supply users after transfer not exceeding a preset user number threshold or the new energy penetration rate not exceeding a preset penetration rate threshold; for each transferable power supply switch, a transferable power supply path is constructed based on the connection relationship between the valid connection line, the transferable power supply switch, and the overload / limit-crossing line.

[0079] This involves identifying the connecting lines that have a valid connection to the overload / limit-crossing line, and further analyzing the specific connection path between these connecting lines and the overload / limit-crossing line. Along this path, all controllable remote-controlled switches that can be remotely controlled and operated need to be identified and extracted. If, after detailed investigation, it is confirmed that there are no controllable remote-controlled switches along this path, then according to relevant rules and standards, this connecting line is deemed to lack the conditions and capabilities to support load transfer operations, and therefore should be directly eliminated from the candidate solutions.

[0080] If multiple controllable remote control switches exist, further screening is performed to select those that meet preset load transfer constraints as power transfer switches. Specifically, the switch with the largest load value at the moment of highest load rate on the opposite line is first selected as the initial candidate switch. This switch is simulated to transfer all its downstream load, and the opposite line is checked to see if it simultaneously meets the requirements of no more than 5000 power supply users and a renewable energy penetration rate of no more than 100%. If both conditions are met, this switch is selected as the power transfer switch. Starting from this initial candidate switch, other remote control switches are checked sequentially along the line towards the original connection point. Each switch is checked to see if it meets the load transfer constraints until all remote control switches that meet the load transfer constraints are found. All remote control switches that meet the load transfer constraints are selected as power transfer switches, and then these power transfer switches are used as power transfer nodes between effective connection lines and overload / limit-crossing lines to construct a transferable power supply path. This transferable power supply path is a complete power restoration link consisting of the power transfer switch, its upstream and downstream remote control equipment, and the corresponding line segment.

[0081] In some embodiments, a multi-objective power transfer capability assessment is performed on each transferable power supply path, and the optimal power transfer path is selected from several transferable power supply paths based on the assessment results. This includes: if there is one transferable power supply path, then that path is selected as the optimal power transfer path; if there are multiple transferable power supply paths, then the following steps are performed: from the multiple transferable power supply paths, select all transferable power supply paths that satisfy the condition that the number of power-supplying users after power transfer does not exceed a preset user number threshold and the new energy penetration rate does not exceed a preset penetration rate threshold as the first preferred power transfer path; from the first preferred power transfer paths, select the path with the largest reduction in line loss as the optimal power transfer path; if there is no first preferred power transfer path, select all transferable power supply paths that satisfy the condition that the new energy penetration rate does not exceed a preset penetration rate threshold as the second preferred power transfer path; from the second preferred power transfer paths, select the path with the largest reduction in line loss as the optimal power transfer path; if there is no second preferred power transfer path, select the path with the smallest new energy penetration rate from the multiple transferable power supply paths as the optimal power transfer path.

[0082] If only one power transfer path exists, it will be the optimal power transfer path. If multiple power transfer paths exist, they will be compared and selected according to the following priority order to determine the optimal power transfer path: First, select the power transfer path that simultaneously meets the following requirements after load transfer: the number of users receiving power after transfer should not exceed 5,000, and the renewable energy penetration rate should not exceed 100%. Then, select the path with the largest reduction in line loss from the first-preferred power transfer paths as the optimal power transfer path.

[0083] If no first-preferred power transfer path exists, all available power transfer paths that meet the requirement of a renewable energy penetration rate not exceeding 100% are selected as the second-preferred power transfer paths. From these second-preferred paths, the path with the largest reduction in line loss is selected as the optimal power transfer path. If no second-preferred power transfer path exists, the path with the lowest renewable energy penetration rate is selected as the optimal power transfer path. This ensures that under different operating conditions, the three objectives of power supply reliability, renewable energy absorption capacity, and economy can be balanced, achieving dynamic adaptive decision-making. For power transfer schemes involving lines exceeding limits, by combining the feasibility analysis of remote control switch operation, the constraint on the number of users on the opposite side of the line after transfer (not exceeding 5000 households), and the constraint on renewable energy penetration rate (not exceeding 100%), and by calculating and comparing line losses before and after transfer, a comprehensive comparison and optimization recommendation of power transfer schemes is achieved. This replaces the traditional method of simply ranking based on the theoretical load capacity, improving the safety and economy of the scheme.

[0084] In some embodiments, after obtaining the optimal power transfer path, the method further includes: using the power transfer paths other than the optimal power transfer path among a plurality of power transfer paths as backup power transfer paths; and generating a power transfer execution list based on the overloaded and over-limited lines, the optimal power transfer path, and the backup power transfer paths.

[0085] After obtaining the optimal power transfer path, the remaining power transfer paths from among several available power transfer paths are designated as backup power transfer paths to cope with uncertainties such as sudden failures of the main path or sudden changes in the output of new energy sources, ensuring that the power transfer strategy has redundancy and robustness. The backup paths are sorted in ascending order of line loss increment to form a tiered response sequence, which can seamlessly switch in when the optimal path fails, maintaining power supply continuity and system stability.

[0086] In addition, the final status and scheme type of each overloaded and overlimited line and its connecting path are summarized and output as a list. The list includes (1) No connecting line flag, which indicates that the overloaded and overlimited line has no other direct connection in the distribution network topology and cannot form a power transfer scheme. (2) Insufficient power transfer capacity flag of connecting line. The insufficient power transfer capacity flag of connecting line indicates that the monthly maximum load rate of the connecting line on the opposite side of the line after deducting temporary power transfer factors is greater than 80%, and is judged to have insufficient reserve capacity to take over the load. (3) Connecting line involves the expected heavy overload section of the day. The connecting line involves the expected heavy overload section of the day. The connecting line involves the expected heavy overload section of the day. The connecting line is included in the list of heavy overload sections in the power grid operation risk warning of the day. (4) Connecting line involves the expected heavy overload section of the past 7 days. The connecting line involves the expected heavy overload section of the past 7 days. The connecting line is included in the list of expected heavy overload sections of any day in the next 7 days. (5) The connecting line involves the control station mark of the main grid monthly load control plan. This mark is used to indicate that the upstream power supply point of the connecting line belongs to the control station of the main grid load control plan for the current month. (6) The over-limit line lacks a reasonable remote control switch mark. This mark is used to indicate that no remote control switch that can be used to implement precise load cutting was found on the feasible connecting path. (7) Alternative scheme. This connecting record was not determined as the optimal in the comprehensive comparison of schemes, but it is a feasible alternative transfer path. (8) Preferred scheme. This connecting record was determined as the optimal transfer scheme for the current over-limit line in the comprehensive comparison of schemes.

[0087] Based on the same inventive concept, this application also provides a distribution network line current overload optimization system for implementing the above-mentioned distribution network line current overload optimization method.

[0088] The solution provided by this system is similar to the solution described in the above method. Therefore, the specific limitations of one or more distribution network line current overload optimization system embodiments provided below can be found in the limitations of the distribution network line current overload optimization method described above, and will not be repeated here.

[0089] like Figure 3 As shown in the figure, this application embodiment also provides a distribution network line current over-limit load optimization system, including: tie line determination module 100, line screening module 200, power transfer screening module 300, power transfer optimization module 400 and load transfer module 500;

[0090] The interconnection line determination module 100 is used to obtain overload and overlimit lines in the distribution network, and in combination with the line topology information of the distribution network, identify all interconnection lines that have physical connection with the overload and overlimit lines.

[0091] The line filtering module 200 is used to obtain the operation information of each connection line and filter out the valid connection lines from multiple connection lines based on the operation information.

[0092] The power transfer screening module 300 is used to determine several transferable power supply paths based on the connection relationship between valid connection lines and overload / limit-crossing lines.

[0093] The power transfer optimization module 400 is used to perform multi-objective power transfer capability evaluation on each available power transfer path, and select the optimal power transfer path from several available power transfer paths based on the evaluation results;

[0094] The load transfer module 500 is used to perform load transfer operations on overloaded and over-limit lines according to the optimal power transfer path.

[0095] In some embodiments, the connection line determination module 100 is configured to:

[0096] Obtain the current carrying capacity information of each line in the distribution network, and identify overloaded or over-limited lines based on the current carrying capacity information;

[0097] Obtain the line topology information of the distribution network, determine all adjacent lines that have physical connection points with overload and overlimit lines and have controllable remote control switches based on the line topology information, and designate the adjacent lines as connection lines.

[0098] In some embodiments, operational information includes temporary power supply overrun records, load rate, heavy overload history records, and load limit flag records;

[0099] Line filtering module 200 is used for:

[0100] The first candidate connection line is selected from multiple connection lines that do not contain records of temporary power transfer exceeding limits.

[0101] Among multiple first candidate contact lines, contact lines with a load rate greater than a preset load rate threshold are removed to obtain second candidate contact lines.

[0102] Among multiple second-candidate connection lines, those with historical records of heavy overload or load limit flags are eliminated to obtain the valid connection lines.

[0103] In some embodiments, the power supply screening module 300 is used for:

[0104] Traverse each valid communication line and identify multiple controllable remote control switches between the valid communication line and the overload / limit-crossing line;

[0105] Obtain the maximum load transfer value for each controllable remote control switch, and determine the remote control switch with the largest maximum load transfer value as the preferred remote control switch;

[0106] Starting with the preferred remote control switch, all remote control switches along the effective connection line toward the connection point are traversed sequentially until all remote control switches that meet the preset load transfer constraints are found as power transfer switches; wherein, the preset load transfer constraints include at least the number of power supply users after power transfer not exceeding the preset user number threshold or the new energy penetration rate not exceeding the preset penetration threshold.

[0107] For each power transfer switch, a transferable power supply path is constructed based on the connection relationships between the effective interconnection lines, the power transfer switch, and the overload / over-limit lines.

[0108] In some embodiments, the power transfer preferred module 400 is used for:

[0109] If there is a transferable power supply path, then the transferable power supply path shall be taken as the optimal transferable power supply path.

[0110] If there are multiple available power supply paths, then execute:

[0111] From multiple available power transfer paths, all available power transfer paths that meet the requirements of having no more than a preset user number threshold after power transfer and having a new energy penetration rate no more than a preset penetration rate threshold are selected as the first preferred power transfer path. From the first preferred power transfer path, the path with the largest reduction in line loss is selected as the optimal power transfer path.

[0112] If there is no first preferred power transfer path, then select all available power transfer paths that meet the requirement that the new energy penetration rate does not exceed the preset penetration rate threshold as the second preferred power transfer path, and select the path with the largest reduction in line loss from the second preferred power transfer path as the optimal power transfer path.

[0113] If there is no second preferred power transfer path, then the path with the lowest new energy penetration rate among multiple available power transfer paths shall be selected as the optimal power transfer path.

[0114] In some embodiments, the system further includes: a manifest generation module, configured to:

[0115] Among several transferable power supply paths, the transferable power supply path other than the optimal transferable power supply path is used as a backup transferable power supply path;

[0116] A power transfer execution list is generated based on overloaded and over-limit lines, the optimal power transfer path, and the backup power transfer path.

[0117] This application embodiment comprehensively acquires information on overloaded or over-limit operating lines in the distribution network system, identifies multiple interconnecting lines associated with these overloaded or over-limited lines, and then effectively filters out effective interconnecting lines with actual power transfer capabilities from these interconnecting lines. Based on the actual connection and electrical relationship between the effective interconnecting lines and the overloaded or over-limited lines, multiple feasible power transfer paths are identified. For each feasible power transfer path, a comprehensive power transfer capability assessment based on multi-dimensional optimization objectives is conducted to select the optimal power transfer path scheme. This method eliminates the need for traditional manual intervention and experience-based judgment, enabling precise and automated decision-making for load transfer strategies, significantly improving operation and maintenance efficiency and response speed. Simultaneously, by comprehensively evaluating the actual power supply capability of each feasible power transfer path from multiple dimensions, the final evaluation result comprehensively considers and optimizes multiple operational objectives, thereby significantly enhancing the dynamic adaptability and overall robustness of the distribution network in the face of load fluctuations, fault disturbances, and other situations.

[0118] like Figure 4 As shown in the figure, this application embodiment also provides an electronic device. The electronic device 10 includes a memory 20 and a processor 30. The memory 20 stores a computer program. When the computer program is executed by the processor 30, the processor 30 performs the following steps:

[0119] Obtain overload and limit-crossing lines within the distribution network, and in conjunction with the distribution network's line topology information, identify all interconnecting lines that have a physical connection with the overload and limit-crossing lines;

[0120] Obtain operational information for each connection line, and filter out valid connection lines from multiple connection lines based on the operational information;

[0121] Based on the connection relationship between effective connection lines and overload / overlimit lines, several transferable power supply paths are determined;

[0122] A multi-objective power transfer capability assessment is performed on each available power transfer path, and the optimal power transfer path is selected from several available power transfer paths based on the assessment results.

[0123] The load transfer operation for overloaded and over-limited lines is performed according to the optimal power transfer path.

[0124] In some embodiments, processor 30 also performs:

[0125] Obtain the current carrying capacity information of each line in the distribution network, and identify overloaded or over-limited lines based on the current carrying capacity information;

[0126] Obtain the line topology information of the distribution network, determine all adjacent lines that have physical connection points with overload and overlimit lines and have controllable remote control switches based on the line topology information, and designate the adjacent lines as connection lines.

[0127] In some embodiments, operational information includes temporary power supply overrun records, load rate, heavy overload history records, and load limit flag records;

[0128] Processor 30 also performs:

[0129] The first candidate connection line is selected from multiple connection lines that do not contain records of temporary power transfer exceeding limits.

[0130] Among multiple first candidate contact lines, contact lines with a load rate greater than a preset load rate threshold are removed to obtain second candidate contact lines.

[0131] Among multiple second-candidate connection lines, those with historical records of heavy overload or load limit flags are eliminated to obtain the valid connection lines.

[0132] In some embodiments, processor 30 also performs:

[0133] Traverse each valid communication line and identify multiple controllable remote control switches between the valid communication line and the overload / limit-crossing line;

[0134] Obtain the maximum load transfer value for each controllable remote control switch, and determine the remote control switch with the largest maximum load transfer value as the preferred remote control switch;

[0135] Starting with the preferred remote control switch, all remote control switches along the effective connection line toward the connection point are traversed sequentially until all remote control switches that meet the preset load transfer constraints are found as power transfer switches; wherein, the preset load transfer constraints include at least the number of power supply users after power transfer not exceeding the preset user number threshold or the new energy penetration rate not exceeding the preset penetration threshold.

[0136] For each power transfer switch, a transferable power supply path is constructed based on the connection relationships between the effective interconnection lines, the power transfer switch, and the overload / over-limit lines.

[0137] In some embodiments, processor 30 also performs:

[0138] If there is a transferable power supply path, then the transferable power supply path shall be taken as the optimal transferable power supply path.

[0139] If there are multiple available power supply paths, then execute:

[0140] From multiple available power transfer paths, all available power transfer paths that meet the requirements of having no more than a preset user number threshold after power transfer and having a new energy penetration rate no more than a preset penetration rate threshold are selected as the first preferred power transfer path. From the first preferred power transfer path, the path with the largest reduction in line loss is selected as the optimal power transfer path.

[0141] If there is no first preferred power transfer path, then select all available power transfer paths that meet the requirement that the new energy penetration rate does not exceed the preset penetration rate threshold as the second preferred power transfer path, and select the path with the largest reduction in line loss from the second preferred power transfer path as the optimal power transfer path.

[0142] If there is no second preferred power transfer path, then the path with the lowest new energy penetration rate among multiple available power transfer paths shall be selected as the optimal power transfer path.

[0143] In some embodiments, processor 30 also performs:

[0144] Among several available power supply paths, the available power supply paths other than the optimal power supply path are designated as backup power supply paths.

[0145] A power transfer execution list is generated based on overloaded and over-limit lines, the optimal power transfer path, and the backup power transfer path.

[0146] This application embodiment comprehensively acquires information on overloaded or over-limit operating lines in the distribution network system, identifies multiple interconnecting lines associated with these overloaded or over-limited lines, and then effectively filters out effective interconnecting lines with actual power transfer capabilities from these interconnecting lines. Based on the actual connection and electrical relationship between the effective interconnecting lines and the overloaded or over-limited lines, multiple feasible power transfer paths are identified. For each feasible power transfer path, a comprehensive power transfer capability assessment based on multi-dimensional optimization objectives is conducted to select the optimal power transfer path scheme. This method eliminates the need for traditional manual intervention and experience-based judgment, enabling precise and automated decision-making for load transfer strategies, significantly improving operation and maintenance efficiency and response speed. Simultaneously, by comprehensively evaluating the actual power supply capability of each feasible power transfer path from multiple dimensions, the final evaluation result comprehensively considers and optimizes multiple operational objectives, thereby significantly enhancing the dynamic adaptability and overall robustness of the distribution network in the face of load fluctuations, fault disturbances, and other situations.

[0147] This application also provides a computer-readable storage medium storing a computer program thereon, which, when executed, performs the following steps:

[0148] Obtain overload and limit-crossing lines within the distribution network, and in conjunction with the distribution network's line topology information, identify all interconnecting lines that have a physical connection with the overload and limit-crossing lines;

[0149] Obtain operational information for each connection line, and filter out valid connection lines from multiple connection lines based on the operational information;

[0150] Based on the connection relationship between effective connection lines and overload / limit-crossing lines, several transferable power supply paths are determined;

[0151] A multi-objective power transfer capability assessment is performed on each available power transfer path, and the optimal power transfer path is selected from several available power transfer paths based on the assessment results.

[0152] The load transfer operation for overloaded and over-limited lines is performed according to the optimal power transfer path.

[0153] In some embodiments, when a computer program is executed, it also performs the following steps:

[0154] Obtain the current carrying capacity information of each line in the distribution network, and identify overloaded or over-limited lines based on the current carrying capacity information;

[0155] Obtain the line topology information of the distribution network, determine all adjacent lines that have physical connection points with overload and overlimit lines and have controllable remote control switches based on the line topology information, and designate the adjacent lines as connection lines.

[0156] In some embodiments, the operational information includes temporary power supply over-limit records, load rate, heavy overload history records, and load limit flag records; when the computer program is executed, it also performs the following steps:

[0157] The first candidate connection line is selected from multiple connection lines that do not contain records of temporary power transfer exceeding limits.

[0158] Among multiple first candidate contact lines, contact lines with a load rate greater than a preset load rate threshold are removed to obtain second candidate contact lines.

[0159] Among multiple second-candidate connection lines, those with historical records of heavy overload or load limit flags are eliminated to obtain the valid connection lines.

[0160] In some embodiments, when a computer program is executed, it also performs the following steps:

[0161] Traverse each valid communication line and identify multiple controllable remote control switches between the valid communication line and the overload / limit-crossing line;

[0162] Obtain the maximum load transfer value for each controllable remote control switch, and determine the remote control switch with the largest maximum load transfer value as the preferred remote control switch;

[0163] Starting with the preferred remote control switch, all remote control switches along the effective connection line toward the connection point are traversed sequentially until all remote control switches that meet the preset load transfer constraints are found as power transfer switches; wherein, the preset load transfer constraints include at least the number of power supply users after power transfer not exceeding the preset user number threshold or the new energy penetration rate not exceeding the preset penetration threshold.

[0164] For each power transfer switch, a transferable power supply path is constructed based on the connection relationships between the effective interconnection lines, the power transfer switch, and the overload / over-limit lines.

[0165] In some embodiments, when a computer program is executed, it also performs the following steps:

[0166] If there is a transferable power supply path, then the transferable power supply path shall be taken as the optimal transferable power supply path.

[0167] If there are multiple available power supply paths, then execute:

[0168] From multiple available power transfer paths, all available power transfer paths that meet the requirements of having no more than a preset user number threshold after power transfer and having a new energy penetration rate no more than a preset penetration rate threshold are selected as the first preferred power transfer path. From the first preferred power transfer path, the path with the largest reduction in line loss is selected as the optimal power transfer path.

[0169] If there is no first preferred power transfer path, then select all available power transfer paths that meet the requirement that the new energy penetration rate does not exceed the preset penetration rate threshold as the second preferred power transfer path, and select the path with the largest reduction in line loss from the second preferred power transfer path as the optimal power transfer path.

[0170] If there is no second preferred power transfer path, then the path with the lowest new energy penetration rate among multiple available power transfer paths shall be selected as the optimal power transfer path.

[0171] In some embodiments, when a computer program is executed, it also performs the following steps:

[0172] Among several available power supply paths, the available power supply paths other than the optimal power supply path are designated as backup power supply paths.

[0173] A power transfer execution list is generated based on overloaded and over-limit lines, the optimal power transfer path, and the backup power transfer path.

[0174] This application embodiment comprehensively acquires information on overloaded or over-limit operating lines in the distribution network system, identifies multiple interconnecting lines associated with these overloaded or over-limited lines, and then effectively filters out effective interconnecting lines with actual power transfer capabilities from these interconnecting lines. Based on the actual connection and electrical relationship between the effective interconnecting lines and the overloaded or over-limited lines, multiple feasible power transfer paths are identified. For each feasible power transfer path, a comprehensive power transfer capability assessment based on multi-dimensional optimization objectives is conducted to select the optimal power transfer path scheme. This method eliminates the need for traditional manual intervention and experience-based judgment, enabling precise and automated decision-making for load transfer strategies, significantly improving operation and maintenance efficiency and response speed. Simultaneously, by comprehensively evaluating the actual power supply capability of each feasible power transfer path from multiple dimensions, the final evaluation result comprehensively considers and optimizes multiple operational objectives, thereby significantly enhancing the dynamic adaptability and overall robustness of the distribution network in the face of load fluctuations, fault disturbances, and other situations.

[0175] This application also provides a computer program product, which includes a computer program stored on a non-transitory computer-readable storage medium. The computer program includes program instructions, wherein when the program instructions are executed by a computer, the computer performs the following steps:

[0176] Obtain overload and limit-crossing lines within the distribution network, and in conjunction with the distribution network's line topology information, identify all interconnecting lines that have a physical connection with the overload and limit-crossing lines;

[0177] Obtain operational information for each connection line, and filter out valid connection lines from multiple connection lines based on the operational information;

[0178] Based on the connection relationship between effective connection lines and overload / limit-crossing lines, several transferable power supply paths are determined;

[0179] A multi-objective power transfer capability assessment is performed on each available power transfer path, and the optimal power transfer path is selected from several available power transfer paths based on the assessment results.

[0180] The load transfer operation for overloaded and over-limited lines is performed according to the optimal power transfer path.

[0181] In some embodiments, the computer also performs the following steps:

[0182] Obtain the current carrying capacity information of each line in the distribution network, and identify overloaded or over-limited lines based on the current carrying capacity information;

[0183] Obtain the line topology information of the distribution network, determine all adjacent lines that have physical connection points with overload and overlimit lines and have controllable remote control switches based on the line topology information, and designate the adjacent lines as connection lines.

[0184] In some embodiments, the operational information includes temporary power supply over-limit records, load rate, heavy overload history records, and load limit flag records; the computer also performs the following steps:

[0185] The first candidate connection line is selected from multiple connection lines that do not contain records of temporary power transfer exceeding limits.

[0186] Among multiple first candidate contact lines, contact lines with a load rate greater than a preset load rate threshold are removed to obtain second candidate contact lines.

[0187] Among multiple second-candidate connection lines, those with historical records of heavy overload or load limit flags are eliminated to obtain the valid connection lines.

[0188] In some embodiments, the computer also performs the following steps:

[0189] Traverse each valid communication line and identify multiple controllable remote control switches between the valid communication line and the overload / limit-crossing line;

[0190] Obtain the maximum load transfer value for each controllable remote control switch, and determine the remote control switch with the largest maximum load transfer value as the preferred remote control switch;

[0191] Starting with the preferred remote control switch, all remote control switches along the effective connection line toward the connection point are traversed sequentially until all remote control switches that meet the preset load transfer constraints are found as power transfer switches; wherein, the preset load transfer constraints include at least the number of power supply users after power transfer not exceeding the preset user number threshold or the new energy penetration rate not exceeding the preset penetration threshold.

[0192] For each power transfer switch, a transferable power supply path is constructed based on the connection relationships between the effective interconnection lines, the power transfer switch, and the overload / over-limit lines.

[0193] In some embodiments, the computer also performs the following steps:

[0194] If there is a transferable power supply path, then the transferable power supply path shall be taken as the optimal transferable power supply path.

[0195] If there are multiple available power supply paths, then execute:

[0196] From multiple available power transfer paths, all available power transfer paths that meet the requirements of having no more than a preset user number threshold after power transfer and having a new energy penetration rate no more than a preset penetration rate threshold are selected as the first preferred power transfer path. From the first preferred power transfer path, the path with the largest reduction in line loss is selected as the optimal power transfer path.

[0197] If there is no first preferred power transfer path, then select all available power transfer paths that meet the requirement that the new energy penetration rate does not exceed the preset penetration rate threshold as the second preferred power transfer path, and select the path with the largest reduction in line loss from the second preferred power transfer path as the optimal power transfer path.

[0198] If there is no second preferred power transfer path, then the path with the lowest new energy penetration rate among multiple available power transfer paths shall be selected as the optimal power transfer path.

[0199] In some embodiments, the computer also performs the following steps:

[0200] Among several available power supply paths, the available power supply paths other than the optimal power supply path are designated as backup power supply paths.

[0201] A power transfer execution list is generated based on overloaded and over-limit lines, the optimal power transfer path, and the backup power transfer path.

[0202] This application embodiment comprehensively acquires information on overloaded or over-limit operating lines in the distribution network system, identifies multiple interconnecting lines associated with these overloaded or over-limited lines, and then effectively filters out effective interconnecting lines with actual power transfer capabilities from these interconnecting lines. Based on the actual connection and electrical relationship between the effective interconnecting lines and the overloaded or over-limited lines, multiple feasible power transfer paths are identified. For each feasible power transfer path, a comprehensive power transfer capability assessment based on multi-dimensional optimization objectives is conducted to select the optimal power transfer path scheme. This method eliminates the need for traditional manual intervention and experience-based judgment, enabling precise and automated decision-making for load transfer strategies, significantly improving operation and maintenance efficiency and response speed. Simultaneously, by comprehensively evaluating the actual power supply capability of each feasible power transfer path from multiple dimensions, the final evaluation result comprehensively considers and optimizes multiple operational objectives, thereby significantly enhancing the dynamic adaptability and overall robustness of the distribution network in the face of load fluctuations, fault disturbances, and other situations.

[0203] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, electronic devices, computer storage media, and computer program products described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0204] It should be noted that the user information and data involved in this application (including but not limited to data used for analysis, data stored, data displayed, etc.) are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of the relevant data must comply with relevant regulations.

[0205] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0206] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0207] In the several embodiments provided by this invention, it should be understood that the disclosed systems, electronic devices, computer storage media, computer program products, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, indirect coupling or communication connection between devices or units, and may be electrical, mechanical, or other forms.

[0208] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0209] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0210] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for executing all or part of the steps of the methods described in the various embodiments of the present invention through a computer device (which may be a personal computer, a server, or a network device, etc.). The aforementioned storage medium includes: USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, optical disks, and other media capable of storing program code.

[0211] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for optimizing overload current in distribution network lines, characterized in that, include: Obtain overload and limit-crossing lines within the distribution network, and in conjunction with the line topology information of the distribution network, identify all interconnecting lines that have a physical connection with the overload and limit-crossing lines; Obtain the operation information of each of the aforementioned communication lines, and filter out the valid communication lines from the multiple communication lines based on the operation information; The operational information includes temporary power supply over-limit records, load rate, heavy overload history records, and load limit flag records; The step of selecting valid communication lines from multiple communication lines based on the operational information includes: From the multiple aforementioned connection lines, the connection line that does not contain any records of temporary power transfer exceeding the limit is selected as the first candidate connection line; Among the multiple first candidate contact lines, contact lines with a load rate greater than a preset load rate threshold are eliminated to obtain second candidate contact lines. Among the multiple second candidate contact lines, contact lines that have the heavy overload history record or the load limit flag record are removed to obtain the effective contact lines; Based on the connection relationship between the effective connection lines and the overload / limit-crossing lines, several transferable power supply paths are determined, including: Traverse each of the valid communication lines and identify multiple controllable remote control switches between the valid communication line and the overload limit line; Obtain the maximum load transfer value for each of the controllable remote control switches, and determine the remote control switch with the largest maximum load transfer value as the preferred remote control switch; Starting from the preferred remote control switch, all remote control switches along the effective connection line toward the connection point are traversed sequentially until all remote control switches that meet the preset load transfer constraints are found as power transfer switches; wherein, the preset load transfer constraints include at least the number of power supply users after power transfer not exceeding a preset user number threshold or the new energy penetration rate not exceeding a preset penetration threshold. For each power transfer switch, the transferable power supply path is constructed based on the connection relationship between the effective interconnection line, the power transfer switch, and the overload and over-limit line; A multi-objective power transfer capability assessment is performed on each of the aforementioned power transferable paths, and the optimal power transfer path is selected from several of the aforementioned power transferable paths based on the assessment results; The load transfer operation for the overloaded and over-limited line is performed according to the optimal power transfer path.

2. The method for optimizing distribution network line current exceeding limits according to claim 1, characterized in that, The step of acquiring overloaded and overlimited lines within the distribution network, and combining this with the distribution network's line topology information, to identify all interconnecting lines physically connected to the overloaded and overlimited lines includes: Obtain the current carrying capacity information of each line in the power distribution network, and identify the overloaded and limit-crossing lines based on the current carrying capacity information; Obtain the line topology information of the power distribution network, determine all adjacent lines that have physical connection points with the overload and limit-crossing lines and have controllable remote control switches based on the line topology information, and use the adjacent lines as the connection lines.

3. The method for optimizing distribution network line current exceeding limits according to claim 1, characterized in that, The step of performing a multi-objective power transfer capability assessment on each of the power transferable paths, and selecting the optimal power transfer path from several power transferable paths based on the assessment results, includes: If there is one transferable power supply path, then the transferable power supply path shall be taken as the optimal transferable power supply path. If there are multiple transferable power paths, then execute: From the multiple available power transfer paths, all available power transfer paths that satisfy the condition that the number of power users after power transfer does not exceed a preset user number threshold and the new energy penetration rate does not exceed a preset penetration threshold are selected as the first preferred power transfer path. From the first preferred power transfer path, the path with the largest reduction in line loss is selected as the optimal power transfer path. If the first preferred power transfer path does not exist, then all the available power transfer paths that meet the condition that the new energy penetration rate does not exceed a preset penetration rate threshold are selected as the second preferred power transfer path, and the path with the largest reduction in line loss is selected from the second preferred power transfer path as the optimal power transfer path. If the second preferred power transfer path does not exist, then the path with the lowest new energy penetration rate among multiple available power transfer paths is selected as the optimal power transfer path.

4. The method for optimizing distribution network line current exceeding limits according to any one of claims 1 to 3, characterized in that, Also includes: The alternative power supply paths among the several available power supply paths, excluding the optimal power supply path, are designated as backup power supply paths. A power transfer execution list is generated based on the overloaded and over-limited lines, the optimal power transfer path, and the backup power transfer path.

5. A distribution network line current overload optimization system, characterized in that, include: The interconnection line determination module is used to acquire overloaded and overlimited lines in the distribution network, and in combination with the line topology information of the distribution network, identify all interconnection lines that have a physical connection with the overloaded and overlimited lines. The line filtering module is used to obtain the operation information of each of the communication lines and filter out the valid communication lines from multiple communication lines based on the operation information. The operational information includes temporary power supply over-limit records, load rate, heavy overload history records, and load limit flag records; The step of selecting valid communication lines from multiple communication lines based on the operational information includes: From the multiple aforementioned connection lines, the connection line that does not contain any records of temporary power transfer exceeding the limit is selected as the first candidate connection line; Among the multiple first candidate contact lines, contact lines with a load rate greater than a preset load rate threshold are eliminated to obtain second candidate contact lines. Among the multiple second candidate contact lines, contact lines that have the heavy overload history record or the load limit flag record are removed to obtain the effective contact lines; The power transfer screening module is used to determine several transferable power supply paths based on the connection relationship between the valid connection lines and the overload and limit-crossing lines; Based on the connection relationship between the effective connection lines and the overload / limit-crossing lines, several transferable power supply paths are determined, including: Traverse each of the valid communication lines and identify multiple controllable remote control switches between the valid communication line and the overload limit line; Obtain the maximum load transfer value for each of the controllable remote control switches, and determine the remote control switch with the largest maximum load transfer value as the preferred remote control switch; Starting from the preferred remote control switch, all remote control switches along the effective connection line toward the connection point are traversed sequentially until all remote control switches that meet the preset load transfer constraints are found as power transfer switches; wherein, the preset load transfer constraints include at least the number of power supply users after power transfer not exceeding a preset user number threshold or the new energy penetration rate not exceeding a preset penetration threshold. For each power transfer switch, the transferable power supply path is constructed based on the connection relationship between the effective interconnection line, the power transfer switch, and the overload and over-limit line; The power transfer optimization module is used to perform multi-objective power transfer capability evaluation on each of the power transferable paths, and select the optimal power transfer path from several power transferable paths based on the evaluation results; The load transfer module is used to perform load transfer operations on the overloaded and over-limited lines according to the optimal power transfer path.

6. An electronic device, characterized in that, The electronic device includes a memory and a processor. The memory stores a computer program. When the computer program is executed by the processor, the processor performs the steps of the distribution network line current overload optimization method as described in any one of claims 1-4.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed, it implements the steps of the distribution network line current overload optimization method as described in any one of claims 1-4.

8. A computer program product, characterized in that, The computer program product includes a computer program stored on a non-transitory computer-readable storage medium, the computer program including program instructions, wherein when the program instructions are executed by a computer, the computer performs the steps of the distribution network line current overload optimization method as described in any one of claims 1-4.

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