Load adjustment method and device for distribution transformer, equipment and medium

Abstract

The application discloses a load adjustment method and device for distribution transformers, equipment and medium, and belongs to the field of load adjustment. The method is as follows: when there is a heavy overload branch of a distribution transformer, first, screening the adjustable branch, then, determining the fire point and the set of to-be-transferred electric meter for each adjustable branch, calculating the load adjustment distance and the power supply distance according to the above, combining the substation and the branch load rate to calculate the load adjustment recommendation evaluation value to select the target adjustable branch, and finally, completing the load transfer according to the target scheme. Therefore, by implementing the application, the problem of low accuracy of the load adjustment for the distribution transformer in the prior art can be solved.

Description

Technical Field

[0001] This application relates to the field of load regulation, and more particularly to a load regulation method, apparatus, equipment and medium for distribution transformers. Background Technology

[0002] With the increasingly prominent uneven distribution of electricity demand in time and space, overload, tripping, and low voltage problems at the user end of distribution lines frequently occur during peak electricity consumption periods, seriously affecting power supply reliability and power quality. In the operation and management of distribution networks, there is often a significant unevenness in load distribution among the branches within a distribution transformer area: some branches are under heavy load or even overload for a long time, while other branches in the same area are under light load or idle, failing to be fully utilized. This uneven load distribution within the distribution area not only reduces the overall operating efficiency of power distribution equipment but also exacerbates the safety risks of local lines. Given the current constraints of high costs and difficult site selection for newly built distribution transformer areas, there is an urgent need to optimize the load distribution of each branch within the distribution area through refined load management methods, in order to fully tap the operating potential of existing power grid facilities and improve the economic efficiency and safety reliability of power supply.

[0003] In existing technologies, maintenance personnel typically rely on overall load monitoring data for the distribution area and their personal experience to qualitatively determine which branches are at risk of severe overload and manually formulate load transfer plans. However, this method, which depends on manual experience, has significant accuracy deficiencies. Due to a shortage of maintenance personnel at the grassroots level, it is difficult to comprehensively collect and analyze load data at the branch level, resulting in insufficient data support for adjustment decisions. This can easily lead to problems such as improper definition of the adjustment scope and large deviations between the adjustment capacity and the target, ultimately resulting in low accuracy in load adjustments. Summary of the Invention

[0004] This application provides a load adjustment method for distribution transformers, which can solve the problem of low accuracy in the existing load adjustment methods for distribution transformers.

[0005] In a first aspect, embodiments of the present invention provide a load adjustment method for a distribution transformer, wherein the distribution transformer includes a plurality of branches, and each branch includes a plurality of meters, and the load adjustment method includes: If the distribution transformer has a heavily overloaded branch, then select a number of branch lines to be transferred in from each of the branch lines; For each of the aforementioned incoming branches, the ignition point of the heavy overload branch for each of the aforementioned incoming branches, used to characterize the load transfer access location, is calculated respectively. And according to each meter corresponding to the heavy overload branch, the set of adjustment meters for each of the aforementioned incoming branches, used to characterize the set of loads to be transferred, is calculated respectively. Based on each set of adjustment meters and each of the branch points, calculate the first load adjustment distance for characterizing the line connection length required for load transfer and the first power supply distance for characterizing the maximum power supply radius of the transferred branch after load transfer for each of the transferred branch lines. Obtain the first area load rate and the first branch load rate corresponding to each of the said transfer-in branches, and calculate the recommended load adjustment evaluation value corresponding to each of the said transfer-in branches based on the first area load rate, the first branch load rate, the first load adjustment distance and the first power supply distance, and then determine the target transfer-in branch based on the recommended load adjustment evaluation value. Based on the target adjustment meter set and target ignition point corresponding to the target input branch, the load of the heavy overload branch is adjusted.

[0006] This application embodiment achieves an initial identification of feasible load-sharing targets for heavily overloaded branches by selecting incoming branches from the various branches of the distribution transformer. Based on this, the ignition point and adjustment meter set are calculated for each incoming branch. The ignition point provides the physical access location for load transfer, while the adjustment meter set precisely identifies the specific power consumption units to be transferred through iterative matching of spatial distance and total load. Both together ensure the quantitative accuracy of load transfer and prevent over- or under-adjustment due to improper adjustment range definition. Furthermore, by calculating the first load adjustment distance and the first power supply distance, the construction connection cost of load transfer and the change in power supply radius after adjustment are quantified, respectively. This allows the assessment of whether the incoming branch is suitable for undertaking the transferred load to move beyond a qualitative level and provide a quantifiable basis for comparison. Finally, a recommended load adjustment evaluation value is calculated based on four dimensions: the load rate of the receiving branch itself, the load rate of the transformer area, the load adjustment distance, and the power supply distance. The target receiving branch is then determined based on this evaluation value. This achieves a scientific ranking and optimal selection of multiple feasible solutions, ensuring that the final adjustment scheme achieves an optimal balance between electrical safety margin, construction economy, and power quality maintenance. Therefore, the embodiments of this application can solve the problem of low accuracy in load adjustment for distribution transformers in the prior art.

[0007] As a preferred example of the first aspect, the calculation of the ignition point for characterizing the load transfer access location for each of the heavily overloaded branches to each of the incoming branches includes: For each of the aforementioned input branches, obtain the first position coordinates corresponding to the connection points of each meter on the heavy overload branch, and obtain the second position coordinates corresponding to the connection points of each meter on the input branch. Based on the coordinates of each of the first positions and the coordinates of each of the second positions, a first distance is calculated to characterize the distance between the connection points of each meter on the overload branch and the connection points of each meter on the incoming branch, and the ignition point is determined based on the first distance.

[0008] In this preferred example, for each incoming branch, the coordinates of the connection points of each meter on the heavy overload branch and the incoming branch are obtained, and the distance between the connection points of each meter on both branches is calculated. The ignition point is determined based on the shortest distance, which realizes the precise spatial positioning of the load transfer connection location, avoids the deviation of manual estimation of connection points, and effectively improves the construction feasibility and operational accuracy of load adjustment.

[0009] As a preferred example of the first aspect, the step of calculating the set of adjustment meters for each of the heavily overloaded branches, representing the set of loads to be transferred, based on the meters corresponding to each of the heavily overloaded branches, includes: For each of the incoming branches, the third position coordinates corresponding to the distribution transformer are obtained, and the reference distance is determined based on the third position coordinates and the coordinates of the branch point corresponding to the branch point. Based on the coordinates of each of the first positions and the reference distance, the meters on the heavy overload branch are screened to obtain an initial set of adjustment meters, and the remaining meters on the heavy overload branch are combined into a set of remaining meters. The total load is determined based on the initial set of adjusted meters. If the total load is less than the preset adjustment capacity, the meter closest to the initial set of adjusted meters is selected from the remaining set of meters and moved into the initial set of adjusted meters. The total load is then recalculated and compared until the current total load is greater than or equal to the adjustment capacity. The current adjusted set of meters is then output as the set of adjusted meters. If the total load is greater than the proposed adjustment capacity, then the meter closest to the remaining meter set is selected from the initial adjustment meter set and moved to the remaining meter set. The total load is then recalculated and compared until the current total load is less than or equal to the proposed adjustment capacity. Finally, the current adjusted meter set is output as the adjustment meter set.

[0010] In this preferred example, the heavy overload branch meters are spatially screened by the reference distance to form an initial adjustment set. Then, the load of the meters is iteratively moved in or out according to the proposed adjustment capacity to match the total load. This ensures that the final set of adjustment meters meets the requirements in terms of spatial continuity and capacity accuracy, avoiding over-adjustment or under-adjustment caused by manual delineation, and ensuring that the load transfer is accurate and controllable.

[0011] As a preferred example of the first aspect, the step of calculating the first load adjustment distance corresponding to each of the adjusted meter sets and each of the branch points, which is used to characterize the line connection length required for load transfer, includes: For each of the aforementioned incoming branches, the meter connection point corresponding to the incoming branch is determined according to the branching point, and the relative distance between each adjusting meter and the meter connection point is calculated based on the set of adjusting meters and the meter connection point. The minimum value among the relative distances is taken as the first load adjustment distance.

[0012] In this preferred example, the location of the access meter for the branch circuit is determined based on the branch point, and the relative distance between each meter to be adjusted and the access location is calculated. The shortest distance is taken as the load adjustment distance, thereby accurately quantifying the line connection length required for load transfer. This provides a comparable quantitative basis for evaluating the amount of construction work and wiring economy, and improves the feasibility of the scheme.

[0013] As a preferred example of the first aspect, the calculation of the recommended load adjustment evaluation value corresponding to each of the first distribution areas, each of the first branch load rates, each of the first load adjustment distances, and each of the first power supply distances includes: For each of the aforementioned incoming branches, the first area load rate, first branch load rate, first load adjustment distance, and first power supply distance corresponding to the incoming branch are normalized to obtain the second area load rate, second branch load rate, second load adjustment distance, and second power supply distance. The recommended load adjustment evaluation value is obtained by multiplying the second transformer area load rate, the second branch load rate, the second load adjustment distance, and the second power supply distance by preset weighting coefficients respectively.

[0014] In this preferred example, for each incoming branch, the load factor of the transformer area, the load factor of the branch, the load adjustment distance, and the power supply distance are normalized to eliminate the dimensional differences between different indicators and make the factors comparable. By pre-setting weighting coefficients and weighting and summing the normalized indicators, the comprehensive balance between electrical safety margin, construction economy, and power supply quality is quantified. The resulting recommended load adjustment evaluation value can objectively reflect the overall advantages and disadvantages of each incoming branch, providing a unified and scientific quantitative basis for selecting the best option from multiple schemes, and significantly improving the accuracy and rationality of load adjustment decisions.

[0015] As a preferred example of the first aspect, the selection of several incoming routes from each of the said routes includes: Obtain the shortest distance between the heavy overload branch and each branch, the load rate corresponding to each branch, and the capacity margin corresponding to each branch; Based on the shortest distance, load rate, and capacity margin, each incoming route is obtained by filtering from each of the routes.

[0016] In this preferred example, by acquiring three quantitative parameters—the shortest distance between the heavily overloaded branch and each other branch, the load rate of each branch, and the capacity margin of each branch—and comprehensively screening each branch based on these three parameters, the precise identification of feasible transfer targets is achieved. Specifically, the shortest distance condition ensures the geographical accessibility and construction economy of the load transfer, eliminating infeasible solutions due to excessive distance; the load rate condition ensures that the transformer where the transferred branch is located has sufficient upstream capacity margin, avoiding the risk of new transformer overloads after the transfer; and the capacity margin condition quantitatively verifies the branch's own carrying capacity, ensuring that the branch's load rate remains within a safe operating range after the load is transferred. This triple screening mechanism works synergistically, filtering layer by layer from three dimensions: spatial distance, upstream power supply capacity, and its own accepting capacity, effectively avoiding the bias and subjectivity of manual screening and significantly improving the accuracy and scientific rigor of determining the transferable branch.

[0017] As a preferred example of the first aspect, the step of filtering from the various branches based on the shortest distance, the load factor, and the capacity margin to obtain the incoming branches includes: Remove the paths whose shortest distance is greater than or equal to a first preset distance threshold from each of the paths to obtain a first candidate path set; Remove the routes whose load rate is greater than or equal to the first preset load rate threshold from the first candidate route set to obtain the second candidate route set; For each candidate route in the second candidate route set, determine whether the capacity margin of the candidate route meets the first preset condition, and take all candidate routes that meet the first preset condition as each incoming route.

[0018] In this preferred example, a first preset distance threshold is set to initially screen each branch, eliminating branches that are geographically too far away, ensuring that the candidate branches are within the construction reach range and improving the feasibility of the solution. Next, branches whose transformer load rates exceed limits are eliminated, preventing load transfer to areas where the upstream power supply is already nearing heavy load and avoiding new overload risks. Finally, the capacity margin of the remaining branches is conditionally assessed to ensure that the load rate of the branch to be transferred remains within a safe operating range after the load is transferred. This three-step progressive screening mechanism filters layer by layer from three dimensions: spatial distance, upstream capacity, and its own acceptance capacity, effectively eliminating branches that are infeasible or pose safety hazards, significantly improving the accuracy and reliability of determining the branches to be transferred.

[0019] Secondly, the present invention provides a load adjustment device for a distribution transformer, wherein the distribution transformer includes a plurality of branches, each branch including a plurality of meters, and the load adjustment device includes: a first adjustment module, a second adjustment module, a third adjustment module, a fourth adjustment module and a fifth adjustment module; The first adjustment module is used to select a number of adjustment branches from the branches if the distribution transformer has a heavy overload branch. The second adjustment module is used to calculate, for each of the overloaded branches, the ignition point of the heavy overloaded branch to each of the overloaded branches, which is used to characterize the load transfer access position, and to calculate, according to each meter corresponding to the heavy overloaded branch, the set of adjustment meters of the heavy overloaded branch to each of the overloaded branches, which is used to characterize the load set to be transferred. The third adjustment module is used to calculate, based on each set of adjustment meters and each of the branch points, a first load adjustment distance for characterizing the line connection length required for load transfer and a first power supply distance for characterizing the maximum power supply radius of the transferred branch after load transfer; The fourth adjustment module is used to obtain the first area load rate and the first branch load rate corresponding to each of the adjusted branches, and calculate the recommended load adjustment evaluation value corresponding to each of the adjusted branches based on the first area load rate, the first branch load rate, the first load adjustment distance and the first power supply distance, and then determine the target adjusted branch based on the recommended load adjustment evaluation value. The fifth adjustment module is used to adjust the load of the heavily overloaded branch according to the target adjustment meter set and target ignition point corresponding to the target input branch.

[0020] As a preferred example of the second aspect, the calculation of the ignition point for characterizing the load transfer access location for each of the heavily overloaded branches to each of the incoming branches includes: For each of the aforementioned input branches, obtain the first position coordinates corresponding to the connection points of each meter on the heavy overload branch, and obtain the second position coordinates corresponding to the connection points of each meter on the input branch. Based on the coordinates of each of the first positions and the coordinates of each of the second positions, a first distance is calculated to characterize the distance between the connection points of each meter on the overload branch and the connection points of each meter on the incoming branch, and the ignition point is determined based on the first distance.

[0021] As a preferred example of the second aspect, the step of calculating the set of adjustment meters for each of the heavily overloaded branches, representing the set of loads to be transferred, based on the meters corresponding to each of the heavily overloaded branches, includes: For each of the incoming branches, the third position coordinates corresponding to the distribution transformer are obtained, and the reference distance is determined based on the third position coordinates and the coordinates of the branch point corresponding to the branch point. Based on the coordinates of each of the first positions and the reference distance, the meters on the heavy overload branch are screened to obtain an initial set of adjustment meters, and the remaining meters on the heavy overload branch are combined into a set of remaining meters. The total load is determined based on the initial set of adjusted meters. If the total load is less than the preset adjustment capacity, the meter closest to the initial set of adjusted meters is selected from the remaining set of meters and moved into the initial set of adjusted meters. The total load is then recalculated and compared until the current total load is greater than or equal to the adjustment capacity. The current adjusted set of meters is then output as the set of adjusted meters. If the total load is greater than the proposed adjustment capacity, then the meter closest to the remaining meter set is selected from the initial adjustment meter set and moved to the remaining meter set. The total load is then recalculated and compared until the current total load is less than or equal to the proposed adjustment capacity. Finally, the current adjusted meter set is output as the adjustment meter set.

[0022] As a preferred example of the second aspect, the step of calculating the first load adjustment distance corresponding to each of the adjusted meter sets and each of the branch points, which is used to characterize the line connection length required for load transfer, includes: For each of the aforementioned incoming branches, the meter connection point corresponding to the incoming branch is determined according to the branching point, and the relative distance between each adjusting meter and the meter connection point is calculated based on the set of adjusting meters and the meter connection point. The minimum value among the relative distances is taken as the first load adjustment distance.

[0023] As a preferred example of the second aspect, the calculation of the recommended load adjustment evaluation value corresponding to each of the first distribution area, each of the first branch load rates, each of the first load adjustment distances, and each of the first power supply distances includes: For each of the aforementioned incoming branches, the first area load rate, first branch load rate, first load adjustment distance, and first power supply distance corresponding to the incoming branch are normalized to obtain the second area load rate, second branch load rate, second load adjustment distance, and second power supply distance. The recommended load adjustment evaluation value is obtained by multiplying the second transformer area load rate, the second branch load rate, the second load adjustment distance, and the second power supply distance by preset weighting coefficients respectively.

[0024] As a preferred example of the second aspect, the selection of several incoming routes from each of the said routes includes: Obtain the shortest distance between the heavy overload branch and each branch, the load rate corresponding to each branch, and the capacity margin corresponding to each branch; Based on the shortest distance, load rate, and capacity margin, each incoming route is obtained by filtering from each of the routes.

[0025] As a preferred example of the second aspect, the step of filtering from the branch lines based on the shortest distance, the load rate, and the capacity margin to obtain the incoming branch lines includes: Remove the paths whose shortest distance is greater than or equal to a first preset distance threshold from each of the paths to obtain a first candidate path set; Remove the routes whose load rate is greater than or equal to the first preset load rate threshold from the first candidate route set to obtain the second candidate route set; For each candidate route in the second candidate route set, determine whether the capacity margin of the candidate route meets the first preset condition, and take all candidate routes that meet the first preset condition as each incoming route.

[0026] In summary, this embodiment of the application achieves an initial identification of feasible load-sharing targets for heavily overloaded branches by selecting incoming branches from the various branches of the distribution transformer. Based on this, the ignition point and adjustment meter set are calculated for each incoming branch. The ignition point provides the physical access location for load transfer, while the adjustment meter set precisely identifies the specific power consumption unit to be transferred through iterative matching of spatial distance and total load. Both together ensure the quantitative accuracy of load transfer and prevent over- or under-adjustment due to improper adjustment range definition. Furthermore, by calculating the first load adjustment distance and the first power supply distance, the construction connection cost of load transfer and the change in power supply radius after adjustment are quantified, respectively. This allows the assessment of whether the incoming branch is suitable for undertaking the transferred load to move beyond a qualitative level and provide a quantifiable basis for comparison. Finally, a recommended load adjustment evaluation value is calculated based on four dimensions: the load rate of the receiving branch itself, the load rate of the transformer area, the load adjustment distance, and the power supply distance. The target receiving branch is then determined based on this evaluation value. This achieves a scientific ranking and optimal selection of multiple feasible solutions, ensuring that the final adjustment scheme achieves an optimal balance between electrical safety margin, construction economy, and power quality maintenance. Therefore, the embodiments of this application can solve the problem of low accuracy in load adjustment for distribution transformers in the prior art.

[0027] Another embodiment of this application also provides a terminal device, including: a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein when the processor executes the computer program, it implements the steps of the load adjustment method for distribution transformers as described in this application.

[0028] Another embodiment of this application also provides a computer-readable storage medium item, including: a stored computer program that, when the computer program is running, controls the device where the computer-readable storage medium is located to perform the steps of the load adjustment method for distribution transformers as described in this application. Attached Figure Description

[0029] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0030] Figure 1 This is a schematic flowchart of an embodiment of a load adjustment method for distribution transformers provided by the present invention. Figure 2 A practical wiring diagram of an embodiment of a load adjustment method for distribution transformers provided by the present invention; Figure 3 This is a module structure diagram of one embodiment of a load adjustment device for distribution transformers provided by the present invention. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0033] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0034] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0035] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0036] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0037] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0038] Example 1 Please refer to Figure 1 To address the issue of low accuracy in load adjustment for distribution transformers in existing technologies, this application provides a load adjustment method for distribution transformers, wherein the distribution transformer includes several branches, and each branch includes several meters. The load adjustment method includes: S1. If the distribution transformer has a heavy overload branch, then select a number of branch lines to be transferred in from each of the branch lines. Specifically, the process for determining the heavy overload shunt can be as follows: First, the system collects or retrieves real-time operational monitoring data for each branch circuit under the target distribution transformer (area). Based on the power supply department's commonly used heavy overload judgment standards (specifically, the branch's real-time load rate exceeds a set safety threshold, such as a load rate greater than 80% for a certain period; the specific threshold can be flexibly set according to the distribution network operation procedures), the status of each branch circuit is screened and compared one by one. Once the screening results show that one or more branches under the transformer have a load rate exceeding the heavy overload threshold, the system will determine that the transformer currently has a heavily overloaded branch. At this point, the method will not make indiscriminate adjustments to the entire distribution area, but will immediately identify these specific problematic branches and initiate a separate automatic load adjustment process for each identified heavily overloaded branch. In the process of handling a single heavily overloaded branch, a specific "planned adjustment capacity r" is determined based on the difference between the actual load rate of the branch and the target load rate to be restored (usually the target value is set to be no higher than 80%). This is the total amount of load that is planned to be moved from this heavily overloaded branch.

[0039] In some embodiments, the step of selecting a plurality of incoming routes from the said routes includes: Obtain the shortest distance between the heavy overload branch and each branch, the load rate corresponding to each branch, and the capacity margin corresponding to each branch; Based on the shortest distance, load rate, and capacity margin, each incoming route is obtained by filtering from each of the routes.

[0040] In some embodiments, the step of filtering from the various routes based on the shortest distance, the load rate, and the capacity margin to obtain the incoming routes includes: Remove the paths whose shortest distance is greater than or equal to a first preset distance threshold from each of the paths to obtain a first candidate path set; Remove the routes whose load rate is greater than or equal to the first preset load rate threshold from the first candidate route set to obtain the second candidate route set; For each candidate route in the second candidate route set, determine whether the capacity margin of the candidate route meets the first preset condition, and take all candidate routes that meet the first preset condition as each incoming route.

[0041] Specifically, after locking in the heavily overloaded branch and determining the proposed adjustment capacity, it is necessary to select a set of incoming branches suitable for receiving this portion of the load from the other branches under the distribution transformer. During the screening process, this embodiment acquires quantitative data in three dimensions for verification: First, spatial distance data, calculating the shortest path distance between the overloaded branch and each candidate branch. This distance is automatically calculated based on the coordinates of the meter connection points and the line path in the geographic information system. Only branches whose shortest distance to the overloaded branch does not exceed a preset threshold are included in the next round of judgment. The specific value of the preset threshold can be flexibly configured by maintenance personnel according to the actual situation of the line corridor on site. Usually, a reasonable range is chosen that ensures the feasibility of load transfer construction and does not cause the voltage at the end to exceed the limit. Second, the load status data of the upstream transformer. The system reads the real-time load rate of the distribution transformer where the candidate branch is located. This load rate must be less than a set value. This step is to prevent the overload risk of the transformer in the distribution area where the target branch is located from occurring after the load transfer solves the overload problem of the branch in this substation. Third, the capacity margin data of the candidate branch itself, which can be referred to by the following mathematical constraints: ; Where r is the proposed adjustment capacity of the heavy overload branch. It is the current load rate of the candidate routing. This refers to the rated capacity of the candidate branch; the meaning of this inequality is that after transferring a load of such a large value as r to this branch, the recalculated load rate of the branch still does not exceed 80%, leaving a certain safety margin for its operation. In this embodiment, all branches that simultaneously meet the above three conditions will be included in the set of branches to be transferred, for use in subsequent calculations and adjustments to the meter set and recommended evaluation values.

[0042] S2. For each of the overloaded branches, calculate the ignition point of the heavy overloaded branch for each of the overloaded branches to characterize the load transfer access position, and calculate the set of adjustment meters of the heavy overloaded branch for each of the overloaded branches to characterize the load set to be transferred, according to each meter corresponding to the heavy overloaded branch. In some embodiments, calculating the ignition point for characterizing the load transfer access location for each of the heavily overloaded branch to each of the incoming branches includes: For each of the aforementioned input branches, obtain the first position coordinates corresponding to the connection points of each meter on the heavy overload branch, and obtain the second position coordinates corresponding to the connection points of each meter on the input branch. Based on the coordinates of each of the first positions and the coordinates of each of the second positions, a first distance is calculated to characterize the distance between the connection points of each meter on the overload branch and the connection points of each meter on the incoming branch, and the ignition point is determined based on the first distance.

[0043] Specifically, once a candidate transfer route is selected for subsequent analysis, this embodiment first needs to determine the spatial distribution of these two routes and the location of their closest points. This requires using the coordinates of each meter's connection point. Specifically, this embodiment retrieves the first coordinates of all meter connection points on the overloaded route from the distribution network geographic information system or ledger database, and simultaneously retrieves the second coordinates of all meter connection points on the candidate transfer route. The coordinates are generally in Cartesian coordinates or projected coordinates converted from latitude and longitude. With these two sets of coordinate data, this embodiment pairs each meter connection point on the overloaded route with each meter connection point on the transfer route, forming all possible coordinate combinations. Then, for each combination, the Euclidean distance formula is used to calculate the straight-line distance between the two points, obtaining a batch of first distance values. Among these calculated first distances, this embodiment finds the smallest one, which represents the pair of meter connection points that are physically closest to each other on the two routes. After determining the set of meters to be adjusted, this embodiment connects the two nearest points between the set of meters to be adjusted and the set of original meter connection points of the branch circuit to the line. The connection point of these two nearest points is actually the physical boundary point where the load is transferred from the original branch circuit to the new branch circuit, which is also the ignition point. The entire process is completed through coordinate data driving and distance traversal comparison, without the need for manual on-site measurement. The algorithm automatically locates the optimal reconnection position.

[0044] In some embodiments, the step of calculating, based on each meter corresponding to the heavy overload branch, a set of adjustment meters for each of the incoming branches to characterize the set of loads to be transferred includes: For each of the incoming branches, the third position coordinates corresponding to the distribution transformer are obtained, and the reference distance is determined based on the third position coordinates and the coordinates of the branch point corresponding to the branch point. Based on the coordinates of each of the first positions and the reference distance, the meters on the heavy overload branch are screened to obtain an initial set of adjustment meters, and the remaining meters on the heavy overload branch are combined into a set of remaining meters. The total load is determined based on the initial set of adjusted meters. If the total load is less than the preset adjustment capacity, the meter closest to the initial set of adjusted meters is selected from the remaining set of meters and moved into the initial set of adjusted meters. The total load is then recalculated and compared until the current total load is greater than or equal to the adjustment capacity. The current adjusted set of meters is then output as the set of adjusted meters. If the total load is greater than the proposed adjustment capacity, then the meter closest to the remaining meter set is selected from the initial adjustment meter set and moved to the remaining meter set. The total load is then recalculated and compared until the current total load is less than or equal to the proposed adjustment capacity. Finally, the current adjusted meter set is output as the adjustment meter set.

[0045] Specifically, in this embodiment, when calculating the set of adjusted meters for a candidate incoming branch, the installation coordinates of the distribution transformer where the incoming branch is located are first obtained, which is the third position coordinate. Simultaneously, the two closest meter connection points between the heavy overload branch and this incoming branch have been determined in previous steps. The distance between the meter connection point (ignition point) on the heavy overload branch side and the transformer is used as the reference distance. This reference distance acts as a dividing line, separating all meter connection points on the heavy overload branch into two groups based on spatial distance. Specifically, this embodiment iterates through the first position coordinates of each meter connection point on the heavy overload branch, calculates the distance from that point to the transformer's position coordinates, and then compares the calculated distance with the reference distance. Any meter connection point whose distance from the transformer is greater than the reference distance, meaning it is further away from the transformer and closer to the end of the line than the nearest connection point, is included in the initial adjustment meter set. The remaining meter connection points whose distance from the transformer is less than or equal to the reference distance indicate that they are located on the side of the nearest connection point closer to the transformer and do not need to be moved for the time being. These meters form the remaining meter set.

[0046] After the initial set of adjustment meters is defined, this embodiment sums up the load values ​​of all meters in the initial set to obtain a total load. This total load is then compared with the previously calculated proposed adjustment capacity. The comparison result triggers two different iterative processing paths.

[0047] If the total load of the initial set of adjusted meters is less than the target adjustment capacity, it means that simply moving these meters is not enough; the load reduction has not reached the expected goal, and more meters need to be added. In this case, this embodiment first finds the meter closest to the transformer in the initial set of adjusted meters, denoted as w. Then, it finds the meter closest to meter w in the remaining set of meters, denoted as j, and removes meter j from the remaining set of meters and adds it to the initial set of adjusted meters. After this migration, the total load of the initial set of adjusted meters is recalculated and compared with the target adjustment capacity. If it is still insufficient, the previous step is repeated—finding a new nearest meter, migrating again, and recalculating—iterating until the total load of the current set of adjusted meters exceeds or equals the target adjustment capacity. Conversely, if the total load of the initial set of adjusted meters is greater than the target adjustment capacity from the beginning, it means that too much load has been moved in this cut, exceeding the amount that needs to be adjusted, and the load needs to be reduced back. At this point, this embodiment will find the meter w closest to the transformer in the initial set of adjusted meters, remove it from the initial set of adjusted meters, and put it back into the set of remaining meters. Then, the total load of the initial set of adjusted meters will be recalculated. If it is still too large, it will continue to move outwards until the total load of the current set of adjusted meters is reduced to less than or equal to the proposed adjustment capacity.

[0048] Regardless of whether the adjustment involves continuously adding or removing meters, when the process finally stops, the set of meters in the adjusted meter collection will contain the specific list of meters that need to be reconnected to the receiving branch for this heavily overloaded branch. The core idea of ​​the algorithm is to use the distance information from the transformer to each meter as a filtering criterion, using the nearest connection point as the boundary to first define a basic range, and then correct the boundary by iteratively approximating the proposed adjustment capacity. This ensures that the transferred load neither wastes capacity margins nor fails to effectively solve the problem of the heavily overloaded branch.

[0049] S3. Based on each set of adjustment meters and each of the branch points, calculate the first load adjustment distance for characterizing the line connection length required for load transfer and the first power supply distance for characterizing the maximum power supply radius of the transferred branch after load transfer for each of the transferred branch lines. In some embodiments, calculating the first load adjustment distance corresponding to each of the adjusted meter sets and each of the branch points, used to characterize the line connection length required for load transfer, includes: For each of the aforementioned incoming branches, the meter connection point corresponding to the incoming branch is determined according to the branching point, and the relative distance between each adjusting meter and the meter connection point is calculated based on the set of adjusting meters and the meter connection point. The minimum value among the relative distances is taken as the first load adjustment distance.

[0050] Specifically, after selecting a specific incoming branch and determining the set of adjustment meters, the next step in this embodiment is to calculate two key engineering parameters for the load transfer: the length of the wiring required for construction and the distance from the furthest meter on this branch to the transformer after the connection is completed. The first parameter is the first load adjustment distance. This embodiment will directly select the smallest value from a set of previously calculated first distances. This minimum value is the shortest connection distance between the meter connection points in the adjustment meter set and the original meter connection points on the incoming branch. It represents the lower limit of the new line length that construction personnel need to erect or utilize if they want to transfer the load from the heavily overloaded branch to this incoming branch. The smaller this value, the easier and cheaper the transfer. The second parameter is the first power supply distance. The system will combine the coordinates of the adjustment meter connection points in the adjustment meter set with the coordinates of the original meter connection points on the incoming branch to form the complete power supply range of this incoming branch after the load adjustment. Then, starting from the location coordinates of the distribution transformer belonging to this incoming branch, the line distance from the transformer to each meter connection point in the set is calculated one by one, regardless of whether it is an old meter that was already on this branch or a new meter that has just been connected from the heavy overload branch. From this set of calculated distance values, the largest one is selected; this is the farthest power supply radius of this incoming branch after load adjustment, which is also known as the first power supply distance. This value is related to the voltage quality at the end; if the power supply distance is too long, even if the capacity margin is sufficient, the voltage at the end may be too low. Therefore, it needs to be calculated separately for reference during subsequent evaluation and ranking. The entire calculation process is driven entirely by the previously obtained location coordinate data and does not require additional manual measurement.

[0051] S4. Obtain the first area load rate and the first branch load rate corresponding to each of the transferred branches, and calculate the recommended load assessment value corresponding to each of the transferred branches based on the first area load rate, the first branch load rate, the first load adjustment distance and the first power supply distance, and then determine the target transferred branch based on the recommended load assessment value. In some embodiments, calculating the recommended load adjustment evaluation value corresponding to each of the first distribution area branches, based on the load rate of each first distribution area, the load rate of each first branch, the first load adjustment distance, and the first power supply distance, includes: For each of the aforementioned incoming branches, the first area load rate, first branch load rate, first load adjustment distance, and first power supply distance corresponding to the incoming branch are normalized to obtain the second area load rate, second branch load rate, second load adjustment distance, and second power supply distance. The recommended load adjustment evaluation value is obtained by multiplying the second transformer area load rate, the second branch load rate, the second load adjustment distance, and the second power supply distance by preset weighting coefficients respectively.

[0052] Specifically, the formula for calculating the recommended load adjustment evaluation value is as follows: ; Where s is the recommended evaluation value for load adjustment. The load adjustment factors include the load rate of the transformer substation receiving the load adjustment, the load rate of the substation, the load adjustment distance, and the power supply distance after load adjustment. These are the weighting coefficients for the corresponding load adjustment factors.

[0053] S5. Adjust the load of the heavily overloaded branch according to the target adjustment meter set and target ignition point corresponding to the target input branch.

[0054] Specifically, after traversing all candidate load transfer branches and calculating their respective recommended load adjustment values, this embodiment will lock the branch with the highest score as the target load transfer branch, and output two corresponding results: one is the target adjustment meter set, which is the list of meters that need to be reassigned from the heavy overload branch; the other is the target switching point, which is the closest connection point between the heavy overload branch and the target load transfer branch on the line corridor. At this point, the algorithm-level work is basically completed, and the remaining task is to guide the field operation based on these two results.

[0055] from Figure 2 As can be seen, the heavy overload branch and the target transfer branch were originally two independent power supply lines, each originating from the distribution transformer busbar or different outgoing switches, and each with its own set of meter connection points. The location of the target ignition point is precisely the node closest to these two branches in terms of spatial path. Therefore, it is necessary to connect the two nearest points between the meter connection points in the target adjustment meter set and the original meter connection point set of the target transfer branch. In simpler terms, after the construction personnel arrive on site, they locate the target ignition point, disconnect the line on the heavy overload branch that is farther from the target ignition point, so that it no longer draws power from the original heavy overload branch, and then run a short new conductor from this disconnected point or use the existing connecting switch to connect it in parallel to the corresponding position of the adjacent target transfer branch. In this way, all the meters in the target adjustment meter set are separated from the power supply range of the heavy overload branch and are instead powered by the target transfer branch.

[0056] After this process is completed, the remaining meters on the overloaded branch will only carry the small section of load that was originally closest to the transformer, and its load rate will naturally decrease, returning to a safe operating range. As for the target branch, because its capacity margin has been calculated beforehand, the load of the newly connected meters will not exceed the 80% load rate limit. At the same time, the initial power supply distance has also been verified, ensuring the quality of the voltage at the end. The entire load adjustment process, from algorithm-generated solutions to on-site reconnection construction, forms a closed loop. Figure 2 The dashed arrow connecting the two branch lines vividly illustrates the path of this load transfer.

[0057] Example 2 like Figure 3 As shown, based on the above method embodiments, corresponding device embodiments are provided; An embodiment of the present invention provides a load adjustment device for a distribution transformer, wherein the distribution transformer includes a plurality of branches, each branch including a plurality of meters, and the load adjustment device includes: a first adjustment module 31, a second adjustment module 32, a third adjustment module 33, a fourth adjustment module 34 and a fifth adjustment module 35; The first adjustment module 31 is used to select a number of adjustment branches from the branches if the distribution transformer has a heavy overload branch. The second adjustment module 32 is used to calculate, for each of the overloaded branches, the ignition point of the heavy overloaded branch to each of the overloaded branches to characterize the load transfer access position, and according to each meter corresponding to the heavy overloaded branch, to calculate the set of adjustment meters of the heavy overloaded branch to each of the overloaded branches to characterize the load set to be transferred. The third adjustment module 33 is used to calculate, based on each set of adjustment meters and each of the branch points, a first load adjustment distance for characterizing the line connection length required for load transfer and a first power supply distance for characterizing the maximum power supply radius of the transferred branch after load transfer; The fourth adjustment module 34 is used to obtain the first area load rate and the first branch load rate corresponding to each of the adjusted branches, and calculate the recommended load assessment value corresponding to each of the adjusted branches based on the first area load rate, the first branch load rate, the first load adjustment distance and the first power supply distance, and then determine the target adjusted branch based on the recommended load assessment value. The fifth adjustment module 35 is used to adjust the load of the heavy overload branch according to the target adjustment meter set and target ignition point corresponding to the target input branch.

[0058] In some embodiments, calculating the ignition point for characterizing the load transfer access location for each of the heavily overloaded branch to each of the incoming branches includes: For each of the aforementioned input branches, obtain the first position coordinates corresponding to the connection points of each meter on the heavy overload branch, and obtain the second position coordinates corresponding to the connection points of each meter on the input branch. Based on the coordinates of each of the first positions and the coordinates of each of the second positions, a first distance is calculated to characterize the distance between the connection points of each meter on the overload branch and the connection points of each meter on the incoming branch, and the ignition point is determined based on the first distance.

[0059] In some embodiments, the step of calculating, based on each meter corresponding to the heavy overload branch, a set of adjustment meters for each of the incoming branches to characterize the set of loads to be transferred includes: For each of the incoming branches, the third position coordinates corresponding to the distribution transformer are obtained, and the reference distance is determined based on the third position coordinates and the coordinates of the branch point corresponding to the branch point. Based on the coordinates of each of the first positions and the reference distance, the meters on the heavy overload branch are screened to obtain an initial set of adjustment meters, and the remaining meters on the heavy overload branch are combined into a set of remaining meters. The total load is determined based on the initial set of adjusted meters. If the total load is less than the preset adjustment capacity, the meter closest to the initial set of adjusted meters is selected from the remaining set of meters and moved into the initial set of adjusted meters. The total load is then recalculated and compared until the current total load is greater than or equal to the adjustment capacity. The current adjusted set of meters is then output as the set of adjusted meters. If the total load is greater than the proposed adjustment capacity, then the meter closest to the remaining meter set is selected from the initial adjustment meter set and moved to the remaining meter set. The total load is then recalculated and compared until the current total load is less than or equal to the proposed adjustment capacity. Finally, the current adjusted meter set is output as the adjustment meter set.

[0060] In some embodiments, calculating the first load adjustment distance corresponding to each of the adjusted meter sets and each of the branch points, used to characterize the line connection length required for load transfer, includes: For each of the aforementioned incoming branches, the meter connection point corresponding to the incoming branch is determined according to the branching point, and the relative distance between each adjusting meter and the meter connection point is calculated based on the set of adjusting meters and the meter connection point. The minimum value among the relative distances is taken as the first load adjustment distance.

[0061] In some embodiments, calculating the recommended load adjustment evaluation value corresponding to each of the first distribution area branches, based on the load rate of each first distribution area, the load rate of each first branch, the first load adjustment distance, and the first power supply distance, includes: For each of the aforementioned incoming branches, the first area load rate, first branch load rate, first load adjustment distance, and first power supply distance corresponding to the incoming branch are normalized to obtain the second area load rate, second branch load rate, second load adjustment distance, and second power supply distance. The recommended load adjustment evaluation value is obtained by multiplying the second transformer area load rate, the second branch load rate, the second load adjustment distance, and the second power supply distance by preset weighting coefficients respectively.

[0062] In some embodiments, the step of selecting a plurality of incoming routes from the said routes includes: Obtain the shortest distance between the heavy overload branch and each branch, the load rate corresponding to each branch, and the capacity margin corresponding to each branch; Based on the shortest distance, load rate, and capacity margin, each incoming route is obtained by filtering from each of the routes.

[0063] In some embodiments, the step of filtering from the various routes based on the shortest distance, the load rate, and the capacity margin to obtain the incoming routes includes: Remove the paths whose shortest distance is greater than or equal to a first preset distance threshold from each of the paths to obtain a first candidate path set; Remove the routes whose load rate is greater than or equal to the first preset load rate threshold from the first candidate route set to obtain the second candidate route set; For each candidate route in the second candidate route set, determine whether the capacity margin of the candidate route meets the first preset condition, and take all candidate routes that meet the first preset condition as each incoming route.

[0064] For more detailed steps and working principles of this embodiment, please refer to the relevant description in Embodiment 1, but not limited to these descriptions.

[0065] In summary, this embodiment of the application achieves an initial identification of feasible load-sharing targets for heavily overloaded branches by selecting incoming branches from the various branches of the distribution transformer. Based on this, the ignition point and adjustment meter set are calculated for each incoming branch. The ignition point provides the physical access location for load transfer, while the adjustment meter set precisely identifies the specific power consumption unit to be transferred through iterative matching of spatial distance and total load. Both together ensure the quantitative accuracy of load transfer and prevent over- or under-adjustment due to improper adjustment range definition. Furthermore, by calculating the first load adjustment distance and the first power supply distance, the construction connection cost of load transfer and the change in power supply radius after adjustment are quantified, respectively. This allows the assessment of whether the incoming branch is suitable for undertaking the transferred load to move beyond a qualitative level and provide a quantifiable basis for comparison. Finally, a recommended load adjustment evaluation value is calculated based on four dimensions: the load rate of the receiving branch itself, the load rate of the transformer area, the load adjustment distance, and the power supply distance. The target receiving branch is then determined based on this evaluation value. This achieves a scientific ranking and optimal selection of multiple feasible solutions, ensuring that the final adjustment scheme achieves an optimal balance between electrical safety margin, construction economy, and power quality maintenance. Therefore, the embodiments of this application can solve the problem of low accuracy in load adjustment for distribution transformers in the prior art.

[0066] It should be noted that the device embodiments described above are merely illustrative, and some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Furthermore, in the accompanying drawings of the device embodiments provided in this application, the connection relationships between modules indicate that they have communication connections, which can specifically be implemented as one or more communication buses or signal lines. Those skilled in the art can understand and implement this without any creative effort.

[0067] Example 3 Based on the above embodiments of the load adjustment method for distribution transformers, another embodiment of this application provides a terminal device, which includes a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program, it implements the load adjustment method for distribution transformers of any embodiment of this application.

[0068] For example, in this embodiment, the computer program can be divided into one or more modules, which are stored in the memory and executed by the processor to complete this application. The one or more module units may be a series of computer program instruction segments capable of performing a specific function, which describe the execution process of the computer program in the terminal device.

[0069] The terminal device may be a desktop computer, laptop, handheld computer, or cloud server, etc. The terminal device may include, but is not limited to, a processor and a memory.

[0070] The processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor can be a microprocessor or any conventional processor. The processor is the control center of the terminal device, connecting all parts of the terminal device via various interfaces and lines.

[0071] Example 4 Based on the above-described method embodiments, another embodiment of this application provides a computer-readable storage medium including a stored computer program, wherein, when the computer program is executed, it controls the device where the computer-readable storage medium is located to execute the load adjustment method for distribution transformers described in any of the above-described method embodiments of this application.

[0072] The modules / units integrated in the device / terminal equipment, if implemented as software functional units and sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying the computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc.

Claims

1. A load adjustment method for distribution transformers, characterized in that, The distribution transformer includes several branches, and each branch includes several meters. The load adjustment method includes: If the distribution transformer has a heavily overloaded branch, then select a number of branch lines to be transferred in from each of the branch lines; For each of the aforementioned incoming branches, the ignition point of the heavy overload branch for each of the aforementioned incoming branches, used to characterize the load transfer access location, is calculated respectively. And according to each meter corresponding to the heavy overload branch, the set of adjustment meters for each of the aforementioned incoming branches, used to characterize the set of loads to be transferred, is calculated respectively. Based on each set of adjustment meters and each of the branch points, calculate the first load adjustment distance for characterizing the line connection length required for load transfer and the first power supply distance for characterizing the maximum power supply radius of the transferred branch after load transfer for each of the transferred branch lines. Obtain the first area load rate and the first branch load rate corresponding to each of the said transfer-in branches, and calculate the recommended load adjustment evaluation value corresponding to each of the said transfer-in branches based on the first area load rate, the first branch load rate, the first load adjustment distance and the first power supply distance, and then determine the target transfer-in branch based on the recommended load adjustment evaluation value. Based on the target adjustment meter set and target ignition point corresponding to the target input branch, the load of the heavy overload branch is adjusted.

2. The load adjustment method for distribution transformers as described in claim 1, characterized in that, The calculation of the ignition point for each of the overloaded branches to characterize the load transfer access location includes: For each of the aforementioned input branches, obtain the first position coordinates corresponding to the connection points of each meter on the heavy overload branch, and obtain the second position coordinates corresponding to the connection points of each meter on the input branch. Based on the coordinates of each of the first positions and the coordinates of each of the second positions, a first distance is calculated to characterize the distance between the connection points of each meter on the overload branch and the connection points of each meter on the incoming branch, and the ignition point is determined based on the first distance.

3. The load adjustment method for distribution transformers as described in claim 2, characterized in that, The step of calculating the set of adjustment meters for each of the overloaded branches, representing the set of loads to be transferred, based on the meters corresponding to the overloaded branches, includes: For each of the incoming branches, the third position coordinates corresponding to the distribution transformer are obtained, and the reference distance is determined based on the third position coordinates and the coordinates of the branch point corresponding to the branch point. Based on the coordinates of each of the first positions and the reference distance, the meters on the heavy overload branch are screened to obtain an initial set of adjustment meters, and the remaining meters on the heavy overload branch are combined into a set of remaining meters. The total load is determined based on the initial set of adjusted meters. If the total load is less than the preset adjustment capacity, the meter closest to the initial set of adjusted meters is selected from the remaining set of meters and moved into the initial set of adjusted meters. The total load is then recalculated and compared until the current total load is greater than or equal to the adjustment capacity. The current adjusted set of meters is then output as the set of adjusted meters. If the total load is greater than the proposed adjustment capacity, then the meter closest to the remaining meter set is selected from the initial adjustment meter set and moved to the remaining meter set. The total load is then recalculated and compared until the current total load is less than or equal to the proposed adjustment capacity. Finally, the current adjusted meter set is output as the adjustment meter set.

4. The load adjustment method for distribution transformers as described in claim 1, characterized in that, The step of calculating the first load adjustment distance corresponding to each of the adjusted meter sets and each of the branch points, used to characterize the line connection length required for load transfer, includes: For each of the aforementioned incoming branches, the meter connection point corresponding to the incoming branch is determined according to the branching point, and the relative distance between each adjusting meter and the meter connection point is calculated based on the set of adjusting meters and the meter connection point. The minimum value among the relative distances is taken as the first load adjustment distance.

5. A load adjustment method for distribution transformers as described in claim 1, characterized in that, The step of calculating the recommended load adjustment evaluation value for each of the first distribution areas, each of the first branch loads, each of the first load adjustment distances, and each of the first power supply distances includes: For each of the aforementioned incoming branches, the first area load rate, first branch load rate, first load adjustment distance, and first power supply distance corresponding to the incoming branch are normalized to obtain the second area load rate, second branch load rate, second load adjustment distance, and second power supply distance. The recommended load adjustment evaluation value is obtained by multiplying the second transformer area load rate, the second branch load rate, the second load adjustment distance, and the second power supply distance by preset weighting coefficients respectively.

6. The load adjustment method for distribution transformers as described in claim 1, characterized in that, The step of selecting several incoming routes from each of the aforementioned routes includes: Obtain the shortest distance between the heavy overload branch and each branch, the load rate corresponding to each branch, and the capacity margin corresponding to each branch; Based on the shortest distance, load rate, and capacity margin, each incoming route is obtained by filtering from each of the routes.

7. A load adjustment method for distribution transformers as described in claim 6, characterized in that, The step of filtering from the various branches based on the shortest distance, load rate, and capacity margin to obtain the incoming branches includes: Remove the paths whose shortest distance is greater than or equal to a first preset distance threshold from each of the paths to obtain a first candidate path set; Remove the routes whose load rate is greater than or equal to the first preset load rate threshold from the first candidate route set to obtain the second candidate route set; For each candidate route in the second candidate route set, determine whether the capacity margin of the candidate route meets the first preset condition, and take all candidate routes that meet the first preset condition as each incoming route.

8. A load adjustment device for distribution transformers, characterized in that, The distribution transformer includes several branches, and each branch includes several meters. The load adjustment device includes: a first adjustment module, a second adjustment module, a third adjustment module, a fourth adjustment module, and a fifth adjustment module. The first adjustment module is used to select a number of adjustment branches from the branches if the distribution transformer has a heavy overload branch. The second adjustment module is used to calculate, for each of the overloaded branches, the ignition point of the heavy overloaded branch to each of the overloaded branches, which is used to characterize the load transfer access position, and to calculate, according to each meter corresponding to the heavy overloaded branch, the set of adjustment meters of the heavy overloaded branch to each of the overloaded branches, which is used to characterize the load set to be transferred. The third adjustment module is used to calculate, based on each set of adjustment meters and each of the branch points, a first load adjustment distance for characterizing the line connection length required for load transfer and a first power supply distance for characterizing the maximum power supply radius of the transferred branch after load transfer; The fourth adjustment module is used to obtain the first area load rate and the first branch load rate corresponding to each of the adjusted branches, and calculate the recommended load adjustment evaluation value corresponding to each of the adjusted branches based on the first area load rate, the first branch load rate, the first load adjustment distance and the first power supply distance, and then determine the target adjusted branch based on the recommended load adjustment evaluation value. The fifth adjustment module is used to adjust the load of the heavily overloaded branch according to the target adjustment meter set and target ignition point corresponding to the target input branch.

9. A terminal device, characterized in that, The system includes a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein the processor, when executing the computer program, implements a load adjustment method for a distribution transformer as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored computer program, wherein, when the computer program is executed, it controls the device on which the computer-readable storage medium is located to perform a load adjustment method for a distribution transformer as described in any one of claims 1 to 7.

Images