Heavy overload processing method and device for transformer of power distribution station, and computer program product

Abstract

The invention discloses a heavy overload processing method and device for a transformer of a power distribution station and a computer program product. The method comprises the following steps: when a first power distribution station transformer has heavy overload, determining a candidate power distribution station transformer, the first distance between which and the first power distribution station transformer is not greater than a first preset distance, as a second power distribution station transformer; determining that the first low-voltage user meeting the guide rule constraint condition is a cutover low-voltage user; and simulating the process of cutover of the cutover low-voltage user from the first power distribution station transformer to the second power distribution station transformer, judging the feasibility of the cutover strategy based on the simulation result, and performing cutover on the cutover low-voltage user when the feasibility meets the requirement so as to enable the load rate of the first power distribution station transformer to meet the requirement. According to the method and the device, the technical problems that omission or errors are easy to generate and the efficiency is relatively low when a large number of heavy overload distribution transformers are faced due to the fact that manual analysis and solution are usually depended on when heavy overload occurs in the transformer of the power distribution network in related technologies are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of distribution network operation planning, and in particular to a method and device for handling heavy overload of a distribution station transformer, and a computer program product. Background Art

[0002] When a transformer in a distribution network is severely overloaded, there are three traditional solutions: cutting off the load from a distribution transformer with a lighter load in the surrounding area, adding a new distribution transformer in the surrounding area to cut off the load from the original distribution transformer, or increasing the capacity of the original distribution transformer. When a distribution transformer is severely overloaded, it is usually necessary to manually analyze the load conditions of the surrounding distribution transformers and the power consumption of low-voltage users to determine whether the problem can be solved by load cutting. This manual analysis method is not only inefficient, but also prone to omissions or errors when facing a large number of heavily overloaded distribution transformers. Especially during peak hours, there may be thousands of distribution transformers that are severely overloaded every day, and the workload of manual analysis is extremely large.

[0003] In the above-mentioned related technologies, when a transformer in a distribution network is heavily overloaded, the solution usually relies on manual analysis, which leads to omissions or errors and low efficiency when facing a large number of heavily overloaded distribution transformers. No effective solution has been proposed yet. Summary of the invention

[0004] The embodiments of the present invention provide a method and device for handling heavy overload of a distribution station transformer, and a computer program product, so as to at least solve the technical problem that in the related art, when a transformer in a distribution network is heavily overloaded, manual analysis solutions are usually relied upon, which leads to omissions or errors and low efficiency when facing a large number of heavily overloaded distribution transformers.

[0005] According to one aspect of an embodiment of the present invention, a method for handling heavy overload of a distribution station transformer is provided, comprising: in the case where a first distribution station transformer is heavily overloaded, determining a candidate distribution station transformer whose first distance from the first distribution station transformer is not greater than a first predetermined distance is a second distribution station transformer, wherein the heavy overload indicates that a first load rate of the first distribution station transformer is greater than a predetermined load rate, and the candidate distribution station transformer refers to a distribution station transformer located within a predetermined range of a location of the first distribution station transformer and whose load rate is not greater than the predetermined load rate; determining a first low-voltage user that meets a guideline constraint condition as a cutover low-voltage user, wherein the guideline constraint condition includes that a second distance between a corresponding low-voltage user and the distribution station transformer is not greater than a second predetermined distance, the corresponding low-voltage user refers to an electric power user supplied by the distribution station transformer, the second predetermined distance is less than the first predetermined distance, and the first low-voltage user refers to an electric power user supplied by the first distribution station transformer. The power user, the cutover low-voltage user is the power user that needs to be cutover from the first distribution station transformer to the second distribution station transformer; the cutover process of the cutover low-voltage user from the first distribution station transformer to the second distribution station transformer is simulated to obtain a simulation result; based on the simulation result, according to the comparison results of the first load rate of the first distribution station transformer and the second load rate of the second distribution station transformer after the cutover with the predetermined load rate, the feasibility of the cutover strategy is judged to obtain a judgment result, wherein the cutover strategy is: cutover the cutover low-voltage user from the first distribution station transformer to the second distribution station transformer; when the judgment result indicates that the feasibility of the cutover strategy meets the feasibility requirement, the cutover low-voltage user is cutover from the first distribution station transformer to the second distribution station transformer according to the cutover strategy, so that the first load rate of the first distribution station transformer is not greater than the predetermined load rate.

[0006] Optionally, determining that the first low-voltage user that meets the guideline constraint condition is the cutover low-voltage user includes: traversing and obtaining the third distance between all second low-voltage users powered by each second distribution station transformer and the second distribution station transformer, wherein the second low-voltage user refers to the power user powered by the second distribution station transformer; when the third distance between all second low-voltage users powered by the second distribution station transformer and the second distribution station transformer is not greater than the second predetermined distance, determining that the second distribution station transformer is the target distribution station transformer; traversing and obtaining the connection distance between each of the first low-voltage users in the first distribution station transformer and each of the target distribution station transformers; determining that the first low-voltage user and the target distribution station transformer whose connection distance is not greater than the second predetermined distance are the cutover low-voltage user and the cutover distribution station transformer corresponding to the cutover low-voltage user, respectively, wherein the cutover distribution station transformer refers to the second distribution station transformer that receives the cutover low-voltage user.

[0007] Optionally, judging the feasibility of the cutover strategy based on the simulation result and the comparison results of the first load rate of the first distribution station transformer and the second load rate of the second distribution station transformer after the cutover with the predetermined load rate respectively, to obtain a judgment result, includes: comparing the first load rate with the predetermined load rate to obtain a first comparison result; comparing the second load rate with the predetermined load rate to obtain a second comparison result; when the first comparison result indicates that the first load rate is greater than the predetermined load rate, determining the judgment result as: the feasibility of the cutover strategy does not meet the feasibility requirement; when the first comparison result indicates that the first load rate is not greater than the predetermined load rate, and the second comparison result indicates that all the second load rates are not greater than the predetermined load rate, determining the judgment result as: the feasibility of the cutover strategy meets the feasibility requirement; when the first comparison result indicates that the first load rate is not greater than the predetermined load rate, and the second comparison result indicates that at least one of the second load rates is greater than the predetermined load rate, adjusting the cutover strategy to re-judge the feasibility of the cutover strategy to obtain the judgment result.

[0008] Optionally, when the first comparison result indicates that the first load rate is not greater than the predetermined load rate, and the second comparison result indicates that at least one of the second load rates is greater than the predetermined load rate, the cutover strategy is adjusted to re-judge the feasibility of the cutover strategy to obtain the judgment result, including: determining that the second distribution station transformer whose second load rate is not greater than the predetermined load rate is a feasible distribution station transformer, and determining that the second distribution station transformer whose second load rate is greater than the predetermined load rate is an infeasible distribution station transformer; determining that the cutover low-voltage user received by the feasible distribution station transformer is a first cutover low-voltage user, and determining that the cutover low-voltage user received by the infeasible distribution station transformer is a second cutover low-voltage user; determining that the second cutover low-voltage user that is the same as the first cutover low-voltage user is a target second cutover low-voltage user; after controlling the infeasible distribution station transformer to stop supplying power to the target second cutover low-voltage user, obtaining a third load rate of the infeasible distribution station transformer; and re-judge the feasibility of the cutover strategy according to a third comparison result between the third load rate and the predetermined load rate to obtain the judgment result.

[0009] Optionally, the feasibility of the cutover strategy is re-judged according to a third comparison result between the third load rate and the predetermined load rate to obtain the judgment result, including: comparing the third load rate with the predetermined load rate to obtain the third comparison result; when the third comparison result indicates that the third load rate is not greater than the predetermined load rate, determining that the judgment result is: the feasibility of the cutover strategy meets the feasibility requirement; when the third comparison result indicates that the third load rate is greater than the predetermined load rate, determining that the infeasible distribution station transformer with the third load rate greater than the predetermined load rate is a target infeasible distribution station transformer; determining the target infeasible the second cutover low-voltage user received by the target infeasible distribution station transformer is a candidate second cutover low-voltage user; the fourth load rate of the target infeasible distribution station transformer and the first distribution station transformer when the candidate second cutover low-voltage user is in different connection states is obtained, wherein the connection state at least includes: the candidate second cutover low-voltage user is retained in the first distribution station transformer and continues to be powered by the first distribution station transformer, and the candidate second cutover low-voltage user is cutover to the second distribution station transformer and is powered by the second distribution station transformer; the feasibility of the cutover strategy is re-judged according to a fourth comparison result between the fourth load rate and the predetermined load rate to obtain the judgment result.

[0010] Optionally, the feasibility of the cutover strategy is re-judged based on a fourth comparison result between the fourth load rate and the predetermined load rate to obtain the judgment result, including: when at least one of the fourth load rates is not greater than the predetermined load rate, determining that the judgment result is: the feasibility of the cutover strategy meets the feasibility requirement; when all of the fourth load rates are greater than the predetermined load rate, determining that the judgment result is: the feasibility of the cutover strategy does not meet the feasibility requirement.

[0011] Optionally, the method for handling heavy overload of the distribution station transformer also includes: when the feasibility of the cutover strategy does not meet the feasibility requirement, handling the heavy overload of the first distribution station transformer according to the processing strategy, so that the first load rate of the first distribution station transformer is not greater than the predetermined load rate, wherein the processing strategy at least includes: adding the distribution station transformer to receive the first low-voltage user and increasing the capacity of the first distribution station transformer by a predetermined amount.

[0012] According to one aspect of an embodiment of the present invention, a heavy overload processing device for a distribution station transformer is provided, comprising: a first determining unit, for determining, when a first distribution station transformer is heavily overloaded, a candidate distribution station transformer whose first distance from the first distribution station transformer is not greater than a first predetermined distance as a second distribution station transformer, wherein the heavy overload indicates that a first load rate of the first distribution station transformer is greater than a predetermined load rate, and the candidate distribution station transformer refers to a distribution station transformer located within a predetermined range of a location of the first distribution station transformer and whose load rate is not greater than the predetermined load rate; a second determining unit, for determining a first low-voltage user that meets a guideline constraint condition as a cutover low-voltage user, wherein the guideline constraint condition includes that a second distance between a corresponding low-voltage user and the distribution station transformer is not greater than a second predetermined distance, the corresponding low-voltage user refers to an electric power user supplied by the distribution station transformer, the second predetermined distance is less than the first predetermined distance, and the first low-voltage user refers to the electric power user supplied by the first distribution station transformer , the cutover low-voltage user is the power user that needs to be cutover from the first distribution station transformer to the second distribution station transformer; the first acquisition unit is used to simulate the cutover process of the cutover low-voltage user from the first distribution station transformer to the second distribution station transformer, and obtain a simulation result; the second acquisition unit is used to judge the feasibility of the cutover strategy based on the simulation result according to the comparison results of the first load rate of the first distribution station transformer and the second load rate of the second distribution station transformer after the cutover with the predetermined load rate, and obtain a judgment result, wherein the cutover strategy is: cutover the cutover low-voltage user from the first distribution station transformer to the second distribution station transformer; the first processing unit is used to cutover the cutover low-voltage user from the first distribution station transformer to the second distribution station transformer according to the cutover strategy when the judgment result indicates that the feasibility of the cutover strategy meets the feasibility requirement, so that the first load rate of the first distribution station transformer is not greater than the predetermined load rate.

[0013] Optionally, the second determination unit includes: a first acquisition module, used to traverse and obtain the third distance between all second low-voltage users powered by each second distribution station transformer and the second distribution station transformer, wherein the second low-voltage user refers to the power user powered by the second distribution station transformer; a first determination module, used to determine that the second distribution station transformer is a target distribution station transformer when the third distance between all second low-voltage users powered by the second distribution station transformer and the second distribution station transformer is not greater than the second predetermined distance; a second acquisition module, used to traverse and obtain the connection distance between each of the first low-voltage users in the first distribution station transformer and each of the target distribution station transformers; a second determination module, used to determine that the first low-voltage user whose connection distance is not greater than the second predetermined distance and the target distribution station transformer are respectively the cutover low-voltage user and the cutover distribution station transformer corresponding to the cutover low-voltage user, wherein the cutover distribution station transformer refers to the second distribution station transformer that receives the cutover low-voltage user.

[0014] Optionally, the second acquisition unit includes: a third acquisition module, used to compare the first load rate with the predetermined load rate to obtain a first comparison result; a fourth acquisition module, used to compare the second load rate with the predetermined load rate to obtain a second comparison result; a third determination module, used to determine that the judgment result is: the feasibility of the cutover strategy does not meet the feasibility requirement when the first comparison result indicates that the first load rate is greater than the predetermined load rate; a fourth determination module, used to determine that the judgment result is: the feasibility of the cutover strategy meets the feasibility requirement when the first comparison result indicates that the first load rate is not greater than the predetermined load rate and the second comparison result indicates that all the second load rates are not greater than the predetermined load rate; a fifth acquisition module, used to adjust the cutover strategy when the first comparison result indicates that the first load rate is not greater than the predetermined load rate and the second comparison result indicates that at least one of the second load rates is greater than the predetermined load rate, so as to re-judge the feasibility of the cutover strategy and obtain the judgment result.

[0015] Optionally, the fifth acquisition module includes: a first determination submodule, used to determine that the second distribution station transformer whose second load rate is not greater than the predetermined load rate is a feasible distribution station transformer, and determine that the second distribution station transformer whose second load rate is greater than the predetermined load rate is an infeasible distribution station transformer; a second determination submodule, used to determine that the cutover low-voltage user received by the feasible distribution station transformer is a first cutover low-voltage user, and determine that the cutover low-voltage user received by the infeasible distribution station transformer is a second cutover low-voltage user; a third determination submodule, used to determine that the second cutover low-voltage user that is the same as the first cutover low-voltage user is the target second cutover low-voltage user; a control submodule, used to control the infeasible distribution station transformer to stop supplying power to the target second cutover low-voltage user, and then obtain a third load rate of the infeasible distribution station transformer; the first acquisition submodule, used to re-judge the feasibility of the cutover strategy according to a third comparison result between the third load rate and the predetermined load rate to obtain the judgment result.

[0016] Optionally, the first acquisition submodule includes: a second acquisition submodule, used to compare the third load rate with the predetermined load rate to obtain the third comparison result; a fourth determination submodule, used to determine that the judgment result is: the feasibility of the cutover strategy meets the feasibility requirement when the third comparison result indicates that the third load rate is not greater than the predetermined load rate; a fifth determination submodule, used to determine that the infeasible distribution station transformer with the third load rate greater than the predetermined load rate is a target infeasible distribution station transformer when the third comparison result indicates that the third load rate is greater than the predetermined load rate; a sixth determination submodule, used to determine that the target infeasible distribution station transformer receives the The second cutover low-voltage user is a candidate second cutover low-voltage user; a third acquisition submodule is used to obtain the fourth load rate of the target infeasible distribution station transformer and the first distribution station transformer when the candidate second cutover low-voltage user is in different connection states, wherein the connection state at least includes: the candidate second cutover low-voltage user remains in the first distribution station transformer and continues to be powered by the first distribution station transformer, and the candidate second cutover low-voltage user is cutover to the second distribution station transformer and is powered by the second distribution station transformer; a fourth acquisition submodule is used to re-judge the feasibility of the cutover strategy according to a fourth comparison result between the fourth load rate and the predetermined load rate to obtain the judgment result.

[0017] Optionally, the fourth acquisition submodule includes: a seventh determination submodule, used to determine that the judgment result is: the feasibility of the cutover strategy meets the feasibility requirement when at least one of the fourth load rates is not greater than the predetermined load rate; an eighth determination submodule, used to determine that the judgment result is: the feasibility of the cutover strategy does not meet the feasibility requirement when all of the fourth load rates are greater than the predetermined load rate.

[0018] Optionally, the heavy overload processing device of the distribution station transformer also includes: a second processing unit, used to process the heavy overload of the first distribution station transformer according to the processing strategy when the feasibility of the cutover strategy does not meet the feasibility requirement, so that the first load rate of the first distribution station transformer is not greater than the predetermined load rate, wherein the processing strategy at least includes: adding the distribution station transformer to receive the first low-voltage user and increasing the capacity of the first distribution station transformer by a predetermined amount.

[0019] According to one aspect of an embodiment of the present invention, a heavy overload processing system for a distribution station transformer is provided. The heavy overload processing system for a distribution station transformer uses any one of the above-mentioned heavy overload processing methods for a distribution station transformer.

[0020] According to one aspect of an embodiment of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium includes a stored program, wherein the program executes any one of the above-mentioned methods for handling heavy overload of a transformer in a distribution station.

[0021] According to one aspect of an embodiment of the present invention, a processor is provided, wherein the processor is used to run a program, wherein the program executes any one of the above-mentioned methods for handling heavy overload of a transformer in a distribution station when running.

[0022] According to one aspect of an embodiment of the present invention, a computer program product is provided, comprising computer instructions, wherein when the computer instructions are executed by a processor, any one of the above-mentioned methods for handling heavy overload of a transformer in a distribution station is executed.

[0023] In an embodiment of the present invention, when the first distribution station transformer is heavily overloaded, a candidate distribution station transformer whose first distance from the first distribution station transformer is not greater than a first predetermined distance is determined to be a second distribution station transformer, wherein the heavy overload indicates that the first load rate of the first distribution station transformer is greater than the predetermined load rate, and the candidate distribution station transformer refers to a distribution station transformer located within a predetermined range of the location of the first distribution station transformer and whose load rate is not greater than the predetermined load rate; and a first low-voltage user that meets the guideline constraint condition is determined to be a cutover low-voltage user, wherein the guideline constraint condition includes that the second distance between the corresponding low-voltage user and the distribution station transformer is not greater than the second predetermined distance, the corresponding low-voltage user refers to an electric power user supplied by the distribution station transformer, the second predetermined distance is less than the first predetermined distance, and the first low-voltage user refers to an electric power user supplied by the first distribution station transformer. Users, the cutover low-voltage users are power users that need to be cutover from the first distribution station transformer to the second distribution station transformer; the cutover process of the cutover low-voltage users from the first distribution station transformer to the second distribution station transformer is simulated to obtain a simulation result; based on the simulation result, the feasibility of the cutover strategy is judged according to the comparison results of the first load rate of the first distribution station transformer and the second load rate of the second distribution station transformer after the cutover with the predetermined load rate, and a judgment result is obtained, wherein the cutover strategy is: cutover the cutover low-voltage users from the first distribution station transformer to the second distribution station transformer; when the judgment result indicates that the feasibility of the cutover strategy meets the feasibility requirements, the cutover low-voltage users are cutover from the first distribution station transformer to the second distribution station transformer according to the cutover strategy, so that the first load rate of the first distribution station transformer is not greater than the predetermined load rate. Through the above technical scheme, the feasibility of the cutover strategy of solving the heavy overload of the distribution transformer by cutting over the load from the distribution transformer with lighter surrounding loads under the premise of considering the guideline constraints is judged, and the heavy overload of the distribution transformer is solved according to the strategy when feasible. The technical effect of rapid screening and verification based on the guideline constraints when facing a large number of heavily overloaded distribution transformers is achieved, which greatly reduces the number of solutions requiring manual analysis and evaluation, improves processing efficiency, shortens the time for formulating solutions to heavy overloads, and provides more timely and accurate technical support for power grid planning and operation. It also solves the technical problem that in the related technology, when the transformer of the distribution network is heavily overloaded, the analysis solution usually relies on manual work, which leads to omissions or errors and low efficiency when facing a large number of heavily overloaded distribution transformers. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0025] Figure 1It is a hardware structure block diagram of a mobile terminal of a method for handling heavy overload of a transformer in a power distribution station according to an embodiment of the present invention;

[0026] Figure 2 is a flow chart of a method for handling heavy overload of a transformer in a distribution station according to an embodiment of the present invention;

[0027] Figure 3 is a schematic diagram of a heavy overload processing process of a distribution station transformer according to an embodiment of the present invention;

[0028] Figure 4 Schematic diagram of a heavy overload processing device for a transformer in a distribution station according to an embodiment of the present invention. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0030] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0031] As introduced in the background technology, in the related art, when a transformer in a distribution network is severely overloaded, manual analysis solutions are usually relied on, which leads to omissions or errors and low efficiency when facing a large number of heavily overloaded distribution transformers. In view of the above defects, a method and device for handling heavy overload of a distribution station transformer and a computer program product are provided in the embodiments of the present invention.

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0033] The method embodiments provided in the embodiments of the present invention can be executed in a mobile terminal, a computer terminal or a similar computing device. Taking running on a mobile terminal as an example, Figure 1 1 is a hardware structure block diagram of a mobile terminal of a method for handling heavy overload of a transformer in a distribution station according to an embodiment of the present invention. Figure 1 As shown, the mobile terminal may include one or more ( Figure 1 Only one is shown in the figure) a processor 102 (the processor 102 may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA) and a memory 104 for storing data, wherein the mobile terminal may also include a transmission device 106 and an input / output device 108 for communication functions. It can be understood by those skilled in the art that Figure 1 The structure shown is only for illustration and does not limit the structure of the mobile terminal. Figure 1 More or fewer components as shown, or with Figure 1 Different configurations shown.

[0034] The memory 104 can be used to store computer programs, for example, software programs and modules of application software, such as the computer program corresponding to the heavy overload processing method of the distribution station transformer in the embodiment of the present invention. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, that is, the above method is implemented. The memory 104 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include a memory remotely arranged relative to the processor 102, and these remote memories can be connected to the mobile terminal via a network. Examples of the above network include but are not limited to the Internet, an intranet, a local area network, a mobile communication network, and a combination thereof. The transmission device 106 is used to receive or send data via a network. The specific example of the above network may include a wireless network provided by a communication provider of the mobile terminal. In one example, the transmission device 106 includes a network adapter (Network Interface Controller, referred to as NIC), which can be connected to other network devices through a base station so as to communicate with the Internet. In one example, the transmission device 106 may be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0035] According to an embodiment of the present invention, a method embodiment of a method for handling a heavy overload of a distribution station transformer is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0036] Figure 2 is a flow chart of a method for handling heavy overload of a distribution station transformer according to an embodiment of the present invention. Figure 2 As shown, the method comprises the following steps:

[0037] Step S202, when the first distribution station transformer is heavily overloaded, determine that a candidate distribution station transformer whose first distance from the first distribution station transformer is not greater than a first predetermined distance is a second distribution station transformer, wherein the heavy overload means that the first load rate of the first distribution station transformer is greater than the predetermined load rate, and the candidate distribution station transformer refers to a distribution station transformer located within a predetermined range of the location of the first distribution station transformer and whose load rate is not greater than the predetermined load rate.

[0038] In this embodiment, the following information can first be obtained by calling the interface: the geographical coordinates of any distribution transformer (i.e., distribution station transformer), the user number, coordinates, and line length to the distribution transformer of all low-voltage users under the distribution transformer, the capacity and maximum load rate of each transformer, the power load of the low-voltage user at any time, etc., to facilitate subsequent analysis.

[0039] Specifically, if distribution transformer A (the first distribution station transformer) is a heavily overloaded distribution transformer and there are multiple distribution transformers around it, under the constraints of planning technical guidelines, can it be considered not to build a new distribution transformer or increase the capacity of the original distribution transformer, but to solve the heavy overload by transferring the power supply of low-voltage users supplied by distribution transformer A to surrounding distribution transformers? The embodiment provided in the present invention mainly analyzes the feasibility of this solution.

[0040] The planning technical guidelines here include the following conditions: 1) The length of the line from the transformer in the distribution station to the low-voltage user does not exceed r lim (ie, the second predetermined distance); 2) the load rate of the heavily overloaded distribution transformer whose load is cut over and the surrounding transformer receiving the load after the cut over is not greater than β lim In practice, r lim Generally, 400 meters is taken, β lim Take 60% of the distribution transformer capacity. Of course, the value can also be taken according to the actual situation. There is no specific restriction here.

[0041] When distribution transformer A is heavily overloaded, considering the planning technical guidelines, multiple distribution transformers with a load rate less than β can be selected from the surrounding distribution transformers. lim(i.e., the predetermined load rate) and the straight-line distance from distribution transformer A is less than 2r lim All distribution transformers at the first predetermined distance are assumed to be B1, B2, ..., Bk (i.e. the selected transformers of the second distribution station).

[0042] Step S204, determining that the first low-voltage user that meets the guideline constraint conditions is the cutover low-voltage user, wherein the guideline constraint conditions include that the second distance between the corresponding low-voltage user and the distribution station transformer is not greater than the second predetermined distance, the corresponding low-voltage user refers to an electric power user supplied by the distribution station transformer, the second predetermined distance is less than the first predetermined distance, the first low-voltage user refers to an electric power user supplied by the first distribution station transformer, and the cutover low-voltage user is an electric power user that needs to be cutover from the first distribution station transformer to the second distribution station transformer.

[0043] In this embodiment, the first low-voltage user that meets the guideline constraint condition can be used as the cutover low-voltage user, and a set C of cutover low-voltage users that can be cutover to each distribution transformer Bi (b=1, 2, ..., k) that meets the constraint can also be obtained accordingly. A-Bi ; Here, the distribution Bi refers to the distribution transformers B1, B2, .., Bk that meet the first planning technical guideline constraint (i.e., the line length from the low-voltage user supplied by the distribution station transformer to the transformer does not exceed r lim ) of the distribution transformer, set C A-Bi The line length between the assigned distribution transformer A and the distribution transformer Bi after the cutover is still less than r lim Low voltage users.

[0044] Step S206, simulating the process of cutting over the low voltage user from the first distribution station transformer to the second distribution station transformer to obtain a simulation result.

[0045] In this embodiment, the feasibility of the cutover strategy of cutting over the load of the distribution transformer with lighter load in the surrounding area to reduce the load of the heavily overloaded distribution transformer can be firstly studied from a theoretical level, so the cutover process can be simulated and analyzed first, so as to facilitate further analysis based on the simulation results later.

[0046] Step S208, based on the simulation results, the feasibility of the cutover strategy is judged according to the comparison results of the first load rate of the first distribution station transformer and the second load rate of the second distribution station transformer after the cutover with the predetermined load rate, and a judgment result is obtained, wherein the cutover strategy is: cutover the low-voltage user from the first distribution station transformer to the second distribution station transformer.

[0047] In this embodiment, the second planning technical guideline constraint (i.e., the load rate of the heavily overloaded distribution transformer whose load is cut over and the surrounding transformer receiving the load after the cut over are not greater than β) can be used. lim ) to judge the feasibility of the cutover strategy.

[0048] Step S210, when the judgment result indicates that the feasibility of the cutover strategy meets the feasibility requirement, the cutover low-voltage user is cutovered from the first distribution station transformer to the second distribution station transformer according to the cutover strategy, so that the first load rate of the first distribution station transformer is not greater than the predetermined load rate.

[0049] In this embodiment, if the judgment result indicates that the feasibility of the cutover strategy meets the feasibility requirement, it can be understood that after the cutover, the load rates of the distribution transformer A and the distribution transformer Bi receiving the load are not greater than β lim , it can be considered that it is feasible to use this cutover strategy to solve the heavy overload of distribution transformer A. Then, according to this cutover strategy, the cutover low-voltage users of distribution transformer A are cutovered to the distribution transformer Bi that can receive the load, that is, the heavy overload of distribution transformer A is solved, and the load rate of distribution transformer A is lower than β lim .

[0050] Of course, if the initial judgment result indicates that the feasibility of the cutover strategy does not meet the feasibility requirements, some adaptive adjustments can be made and then the judgment can be made again. If the feasibility of the cutover strategy does not meet the feasibility requirements in all possible cases, it is considered that it is not feasible to use the cutover strategy to solve the heavy overload of distribution transformer A, and other solutions can be selected to solve the heavy overload of distribution transformer A.

[0051] As can be seen from the above, through the technical solution provided by the above embodiment of the present invention, when the first distribution station transformer is heavily overloaded, a candidate distribution station transformer whose first distance from the first distribution station transformer is not greater than the first predetermined distance can be determined as the second distribution station transformer, wherein the heavy overload indicates that the first load rate of the first distribution station transformer is greater than the predetermined load rate, and the candidate distribution station transformer refers to a distribution station transformer located within a predetermined range of the location of the first distribution station transformer and whose load rate is not greater than the predetermined load rate; a first low-voltage user that meets the guideline constraint condition is determined as a cutover low-voltage user, wherein the guideline constraint condition includes that the second distance between the corresponding low-voltage user and the distribution station transformer is not greater than the second predetermined distance, the corresponding low-voltage user refers to an electric power user supplied by the distribution station transformer, the second predetermined distance is less than the first predetermined distance, the first low-voltage user refers to an electric power user supplied by the first distribution station transformer, and the cutover low-voltage user is an electric power user that needs to be cutover from the first distribution station transformer to the second distribution station transformer; a cutover process of the cutover low-voltage user from the first distribution station transformer to the second distribution station transformer is simulated to obtain a simulation result; based on The simulation results judge the feasibility of the cutover strategy according to the comparison results of the first load rate of the first distribution station transformer and the second load rate of the second distribution station transformer after the cutover with the predetermined load rate, and obtain the judgment result, wherein the cutover strategy is: cutover the cutover low-voltage user from the first distribution station transformer to the second distribution station transformer; when the judgment result indicates that the feasibility of the cutover strategy meets the feasibility requirements, the cutover low-voltage user is cutover from the first distribution station transformer to the second distribution station transformer according to the cutover strategy, so that the first load rate of the first distribution station transformer is not greater than the predetermined load rate, and the feasibility of the cutover strategy of cutting overload from the distribution transformer with lighter surrounding load to solve the heavy overload of the distribution transformer is judged under the premise of considering the guideline constraints, and the purpose of solving the heavy overload of the distribution transformer according to the strategy when feasible is achieved, and the technical effect of rapid screening and verification based on the guideline constraints in the face of a large number of heavily overloaded distribution transformers is achieved, which greatly reduces the number of solutions that require manual analysis and evaluation, improves processing efficiency, shortens the time for formulating solutions to solve heavy overloads, and provides more timely and accurate technical support for power grid planning and operation.

[0052] Therefore, the technical solution provided by the above-mentioned embodiments of the present invention solves the technical problem that in the related art, when the transformer of the distribution network is heavily overloaded, manual analysis solutions are usually relied upon, which leads to omissions or errors and low efficiency when facing a large number of heavily overloaded distribution transformers.

[0053] First, the symbols involved in the embodiment of the present invention are defined below. For any distribution transformer A, the maximum load rate is β A , capacity is S A, distribution transformer A and its low-voltage users constitute a set (hereinafter referred to as the fire point set of distribution transformer A) C A ={C A0 , c A1 , C A2 , C A3 , ..., c Am}, C A0 represents the distribution transformer A itself, c Aa (1≤a≤m) represents the ath low-voltage user of distribution transformer A. Distribution transformer A has a total of m low-voltage users. Aa , its maximum power load s(c Aa ), the line length to the distribution transformer r(c Aa ), in particular, r(C A0 )=0,s(C A0 )=S A *β A , the fire point set element c of the variable A Aa The fire point set element C of the distribution transformer B Bj The straight-line distance between them is d(c Aa , c Bj ), agreed s({C A1 , C A2 , C A3 , ..., c Am})=s(C A1 )+s(C A2 )+s(C A3 )+……+s(c Am ) is the sum of the maximum power loads of low-voltage users; the maximum load S of distribution transformer A A *β A is the sum of the maximum power load of low-voltage users, so s({C A1 , C A2 , C A3 , ..., c Am})=S A *β A .

[0054] According to the above embodiment of the present invention, determining that the first low-voltage user that meets the guideline constraint condition is the cutover low-voltage user includes: traversing and obtaining the third distance between all second low-voltage users powered by each second distribution station transformer and the second distribution station transformer, wherein the second low-voltage user refers to the power user powered by the second distribution station transformer; when the third distance between all second low-voltage users powered by the second distribution station transformer and the second distribution station transformer is not greater than the second predetermined distance, determining that the second distribution station transformer is the target distribution station transformer; traversing and obtaining the connection distance between each first low-voltage user in the first distribution station transformer and each target distribution station transformer; determining that the first low-voltage user whose connection distance is not greater than the second predetermined distance and the target distribution station transformer are respectively the cutover low-voltage user and the cutover distribution station transformer corresponding to the cutover low-voltage user, wherein the cutover distribution station transformer refers to the second distribution station transformer that receives the cutover low-voltage user.

[0055] In this embodiment, each Bi∈{B1, B2, ..., Bk} can be traversed to obtain a set C of cutover low-voltage users that can be cutover to each distribution transformer Bi (b=1, 2, ..., k) that satisfies the guideline constraint. A-Bi ; The specific process is as follows: First, traverse each fire point set element C of Bi in turn Bij ∈C Bi ={C Bi0 , c Bi1 , c Bi2 , c Bi3 , ..., c Bin}, where the falling point set element refers to the set consisting of the distribution transformer and all the low-voltage users it supplies, j represents the number of the element in the falling point set, c Bi0 represents the distribution transformer Bi itself, C Bij represents the jth low-voltage user connected to the distribution transformer Bi, and n represents the total number of low-voltage users supplied by the distribution transformer Bi. If r(C Bij )≥r lim , it is considered that the distribution Bi does not meet the guideline constraints, and then continue to traverse each fire point set element of the next distribution transformer Bi; if r(C Bij )<r lim , then by traversing the low-voltage user set element C of distribution transformer A Al ∈{C A1 , C A2 , C A3 , ..., c Am}(excluding distribution transformer A itself C A0 ), C Al Indicates the first low-voltage user connected to distribution transformer A. If r(c Bij )+q*d(c Al , C Bij )<rlim (q is the path coefficient, generally 1.5) (This is to ensure that the line length between the low-voltage user in distribution transformer A and distribution transformer Bi does not exceed r after being cut over to distribution transformer Bi. lim ), then it is considered that the low-voltage user C of distribution transformer A Al Can be cut over to the distribution Bi and included in the set C A-Bi ; Use this traversal to make judgments until all distribution transformers Bi are traversed, and the set C of low-voltage users cutover for each distribution transformer Bi that meets the guideline constraints is obtained A-Bi .

[0056] According to the above embodiment of the present invention, the feasibility of the cutover strategy is judged based on the comparison results of the first load rate of the first distribution station transformer and the second load rate of the second distribution station transformer after the cutover with the predetermined load rate respectively based on the simulation result to obtain the judgment result, including: comparing the first load rate with the predetermined load rate to obtain a first comparison result; comparing the second load rate with the predetermined load rate to obtain a second comparison result; when the first comparison result indicates that the first load rate is greater than the predetermined load rate, determining that the judgment result is: the feasibility of the cutover strategy does not meet the feasibility requirement; when the first comparison result indicates that the first load rate is not greater than the predetermined load rate, and the second comparison result indicates that all the second load rates are not greater than the predetermined load rate, determining that the judgment result is: the feasibility of the cutover strategy meets the feasibility requirement; when the first comparison result indicates that the first load rate is not greater than the predetermined load rate, and the second comparison result indicates that at least one second load rate is greater than the predetermined load rate, adjusting the cutover strategy to re-judge the feasibility of the cutover strategy to obtain the judgment result.

[0057] In this embodiment, the feasibility of the cutover strategy of cutting over the load of the distribution transformer with lighter load in the surrounding area to reduce the load of the heavily overloaded distribution transformer is mainly studied from a theoretical level. If after the cutover, the load rate of distribution transformer A still exceeds β lim , then the cutover strategy is considered infeasible; if after the cutover, the load rates of distribution transformer A and distribution transformer Bi do not exceed β lim , then the cutover strategy is considered feasible; if after the cutover, the load rate of distribution transformer A does not exceed β lim , and at least one distribution transformer Bi has a load factor exceeding β lim , the cutover strategy can be adaptively adjusted, and its feasibility can be re-judged after the adjustment to obtain the judgment result.

[0058] Specifically, after the cutover, the load rate of distribution transformer A is A ' can be calculated by the following formula: Load factor β of each distribution transformer Bi Bi It can be calculated by the following formula: In Beta A ′>βlim In the case of β, the cutover strategy is considered infeasible; A ′≤β lim And β Bi ≤β lim In the case of β, the cutover strategy is considered feasible; A ′≤β lim And at least one β Bi >β lim In this case, the cutover strategy can be adaptively adjusted, and its feasibility can be re-judged after the adjustment to obtain the judgment result.

[0059] According to the above embodiment of the present invention, when the first comparison result indicates that the first load rate is not greater than the predetermined load rate, and the second comparison result indicates that at least one second load rate is greater than the predetermined load rate, the cutover strategy is adjusted to re-judge the feasibility of the cutover strategy to obtain a judgment result, including: determining that the second distribution station transformer whose second load rate is not greater than the predetermined load rate is a feasible distribution station transformer, and determining that the second distribution station transformer whose second load rate is greater than the predetermined load rate is an infeasible distribution station transformer; determining that the cutover low-voltage user received by the feasible distribution station transformer is the first cutover low-voltage user, and determining that the cutover low-voltage user received by the infeasible distribution station transformer is the second cutover low-voltage user; determining that the second cutover low-voltage user that is the same as the first cutover low-voltage user is the target second cutover low-voltage user; after controlling the infeasible distribution station transformer to stop supplying power to the target second cutover low-voltage user, obtaining a third load rate of the infeasible distribution station transformer; and re-judge the feasibility of the cutover strategy according to the third comparison result between the third load rate and the predetermined load rate to obtain a judgment result.

[0060] In this embodiment, the set C of low-voltage users cutover of the distribution transformer Bi obtained above is A-Bi There may be repeated low-voltage users in the distribution transformer A, that is, the same low-voltage user of the distribution transformer A may be received by two distribution transformers Bi, so after the cutover, the load rate of the distribution transformer A does not exceed β lim , and at least one distribution transformer Bi has a load factor exceeding β lim In this case, the low-voltage users accepted by each distribution transformer Bi can be deduplicated to improve the accuracy of the feasibility judgment of the cutover strategy.

[0061] Specifically, the load rate of the low-voltage users after the cutover of distribution transformer A is no greater than β lim The distribution transformer of is a feasible distribution transformer set {Bx1, Bx2, ...} of an infeasible distribution station transformer. The set of low-voltage users of the distribution transformer A received by this set is And the load rate of the low-voltage users after the cutover of distribution transformer A is greater than β limThe distribution transformer is taken as an infeasible distribution transformer set {By1, By2, …} of an infeasible distribution station transformer; then the low-voltage users of the distribution transformer A received by each distribution transformer Bi in the two sets are compared. If the low-voltage users of the distribution transformer A received by each distribution transformer in the infeasible distribution transformer set {By1, By2, …} are the same as the low-voltage users of the distribution transformer A received by each distribution station in the feasible distribution transformer set {Bx1, Bx2, …}, then the distribution transformers in the infeasible distribution transformer set {By1, By2, …} stop continuing to receive these same low-voltage users to perform deduplication processing, and then judge the load rate of each distribution transformer in the infeasible distribution transformer set {By1, By2, …} after deduplication, so as to further judge the feasibility of the cutover strategy.

[0062] After deduplication of the low-voltage users of distribution transformer A received by each distribution transformer in the infeasible distribution transformer set {By1, By2, ...}, the low-voltage user set of distribution transformer A received by each distribution transformer in the infeasible distribution transformer set {By1, By2, ...} can be first updated using the following formula: A-Bi =C A-Bi \U i＝x1 C A-Bi It should be noted that in this formula, the first C on the left side and the right side of the equal sign A-Bi Bi∈{By1, By2, ...} in the equation, and the second C after the equal sign A-Bi Bi∈{Bx1, Bx2, …} in the infeasible distribution transformer set {By1, By2, …} is equivalent to removing the same low-voltage users that the distribution transformers in the infeasible distribution transformer set {By1, By2, …} stop receiving, so as to A-Bi After that, the load rate of each distribution transformer in the infeasible distribution transformer set {By1, By2, …} can be recalculated and then compared with the predetermined load rate β lim Compare and further judge the feasibility of the cutover strategy.

[0063] According to the above embodiment of the present invention, the feasibility of the cutover strategy is re-judged according to the third comparison result between the third load rate and the predetermined load rate to obtain the judgment result, including: comparing the third load rate with the predetermined load rate to obtain the third comparison result; when the third comparison result indicates that the third load rate is not greater than the predetermined load rate, determining that the judgment result is: the feasibility of the cutover strategy meets the feasibility requirement; when the third comparison result indicates that the third load rate is greater than the predetermined load rate, determining that the infeasible distribution station transformer with the third load rate greater than the predetermined load rate is the target infeasible distribution station transformer; determining that the second cutover low-voltage user received by the target infeasible distribution station transformer is the candidate second cutover low-voltage user; obtaining the fourth load rate of the target infeasible distribution station transformer and the first distribution station transformer when the candidate second cutover low-voltage user is in different connection states, wherein the connection state at least includes: the candidate second cutover low-voltage user is retained in the first distribution station transformer and continues to be powered by the first distribution station transformer, and the candidate second cutover low-voltage user is cutover to the second distribution station transformer and powered by the second distribution station transformer; re-judging the feasibility of the cutover strategy according to the fourth comparison result between the fourth load rate and the predetermined load rate to obtain the judgment result.

[0064] In this embodiment, if after deduplication, the load rate of all distribution transformers Bi does not exceed β lim , the cutover strategy is considered feasible; if after deduplication, there is still at least one distribution transformer Bi with a load ratio exceeding β lim , then all connection states of the low-voltage users of the distribution transformer A received by the distribution transformer Bi are traversed to determine the load rate of the distribution transformer A and the distribution transformer Bi in various connection states and the predetermined load rate β lim Make a comparison and further judge the feasibility of the cutover strategy.

[0065] Specifically, we can obtain the load ratio after deduplication is still greater than β lim The set of distribution transformers Bi {Bz1, Bz2, ...}, the set of low-voltage users of distribution transformer A received by this set is For each c j ∈U i＝ z1 C A-Bi , define the set O cj Indicates user c j The set of distribution transformers that can be cutover, if c j ∈C A-Bi , then Bi is included in O cj , and finally include A in O cj , for each c j ∈U i＝z1 C A-Bi , choose any set O cjThe distribution transformer in the j ∈U i＝z1 C A-Bi The state space composed of states is used to determine whether there is a state such that the load rate of the distribution transformer A and each distribution transformer in the set {Bz1, Bz2, …} after the cutover is less than β lim .

[0066] It should be noted that the connection status here is explained as follows: If the load rate of a distribution transformer Bi is still greater than β after deduplication lim , then all possible connection modes of the low-voltage users of the distribution transformer A received by the distribution transformer Bi are traversed. For example, if the number of low-voltage users of the distribution transformer A received by the distribution transformer Bi is two, then all possible connection modes may include: both low-voltage users continue to be powered by the distribution transformer A, both low-voltage users are powered by the distribution transformer Bi, and the two low-voltage users are powered by the distribution transformer A and the distribution transformer Bi respectively (there are two cases here, and the distribution transformers connected to the two low-voltage users can interact). The above are all connection states in this case; here only the load rate is still greater than β after deduplication. lim The case where the number of distribution transformers Bi is 1 and the number of low-voltage users of distribution transformer A received by the distribution transformer Bi is 2 is described. The connection states in other cases are not described in detail. In the specific implementation process, it is necessary to traverse each possible connection state.

[0067] It should be noted that the first load rate, the second load rate, the third load rate and the fourth load rate mentioned in the embodiment of the present invention represent the load rates of all corresponding distribution station transformers in the corresponding states, which can be understood as a set, that is, under a certain same state, the load rates of all distribution station transformers involved can be called one of the first load rate, the second load rate, the third load rate and the fourth load rate.

[0068] According to the above embodiment of the present invention, the feasibility of the cutover strategy is re-judged according to the fourth comparison result between the fourth load rate and the predetermined load rate to obtain a judgment result, including: when at least one fourth load rate is not greater than the predetermined load rate, determining that the judgment result is: the feasibility of the cutover strategy meets the feasibility requirement; when all fourth load rates are greater than the predetermined load rate, determining that the judgment result is: the feasibility of the cutover strategy does not meet the feasibility requirement.

[0069] In this embodiment, if there is at least one connection state that can make the load rate of the distribution transformer A and each distribution transformer in the set {Bz1, Bz2, ...} not greater than β limm , then the cutover strategy is still feasible; if the load rate of distribution transformer A and each distribution transformer in the set {Bz1, Bz2, …} cannot be less than β under all connection stateslimm , then the cutover strategy is considered to be infeasible.

[0070] It should be noted that the cutover strategy mentioned in the embodiment of the present invention is not fixed, and the specific cutover mode of the cutover strategy will be determined according to the mode in which the feasibility of the cutover strategy meets the feasibility requirements; for example, if the cutover strategy meets the feasibility requirements after the low-voltage users of distribution transformer A are cutovered to distribution transformer Bi at the beginning, then the current cutover mode is considered to be a feasible cutover strategy; if the cutover strategy meets the feasibility requirements after deduplication of the same low-voltage users, then the current cutover mode is considered to be a feasible cutover strategy; if a connection state is finally found that makes the cutover strategy meet the feasibility requirements, then the cutover mode in this state is considered to be a feasible cutover strategy.

[0071] According to the above embodiment of the present invention, the method for handling heavy overload of a distribution station transformer also includes: when the feasibility of the cutover strategy does not meet the feasibility requirements, handling the heavy overload of the first distribution station transformer according to the processing strategy so that the first load rate of the first distribution station transformer is not greater than the predetermined load rate, wherein the processing strategy at least includes: adding a new distribution station transformer to receive the first low-voltage user and increasing the capacity of the first distribution station transformer by a predetermined amount.

[0072] In this embodiment, if the conclusion finally obtained after analysis is that the feasibility of the cutover strategy does not meet the feasibility requirements, the heavy overload problem of distribution transformer A can be solved by adding a new distribution station transformer to cut over the low-voltage users of distribution transformer A, and / or increasing the capacity of distribution transformer A.

[0073] Combine the following Figure 3 Another embodiment of the present invention is described in detail. Figure 3 Schematic diagram of a heavy overload processing process of a transformer in a distribution station according to an embodiment of the present invention.

[0074] like Figure 3 As shown in the figure, it is assumed that distribution transformer A is a heavily overloaded distribution transformer, and there are four distribution transformers B1-B4 around it. In the planning guidelines, r lim Take 400 meters, β lim Taking 60% of the capacity of distribution transformer A, the feasibility of using the cutover strategy to cut over the low-voltage users of distribution transformer A to four distribution transformers B1-B4 to solve the heavy overload problem of distribution transformer A is analyzed according to the following steps.

[0075] Step 1: Among the distribution transformers B1-B4, the ones with a load rate less than 60% and a straight-line distance from the distribution transformer A less than 800 meters are B1, B2, and B4.

[0076] Step 2-4: After traversal, satisfy r(c Bij )+k*d(C Al, c Bij )<r lim (k is the path coefficient, generally 1.5), the number of low-voltage users that can be switched over by B1 to distribution transformer A is C A-B1 ={c A2 , c A5}, the low-voltage user that can be cut over by B2 is C A-B2 ={C A5 , c A6}, the low-voltage user that can be cut over by B4 is C A-B4 ={C A7 , c A8}.

[0077] Step 5: If the distribution transformer A is in C A-B1 ∪C A-B2 ∪C A-B4 ={C A2 , c A5 , c A6 , c A7 , c A8} are cut over, after measurement, the load rate is still greater than 60%, it can be concluded that "the heavy overload of distribution transformer A cannot be solved by transferring the power supply of low-voltage users to surrounding distribution transformers B1, B2, ...", otherwise go to step 6.

[0078] Step 6: If B1 cuts over to C A-B1 ={C A2 , c A5}, B2 cuts over to C A-B2 ={C A5 , c A6}, B4 cuts over to C A-B4 ={c A7 , c A8}, if the load rate is no more than 60%, it can be concluded that "the heavy overload of distribution transformer A can be solved by transferring the power supply of low-voltage users to surrounding distribution transformers B1, B2, etc."; otherwise, execute step 7.

[0079] Step 7: Assume that the load rate of distribution transformer B2 after the low-voltage user of distribution transformer A is greater than 60%, and the load rate of B1 and B2 after the cutover is less than 60%. Since in the calculation of step 6, c A5 It is cut over to both B1 and B2, so there is duplicate calculation. A5 Only cut over to B1, B2 only cut over to c A6 If the load rate is less than 60%, it can be concluded that "the heavy overload of distribution transformer A can be solved by transferring the power supply of low-voltage users to surrounding distribution transformers B1, B2, etc."; otherwise, execute step 8.

[0080] Step 8: In step 7, C A-B2 Updated to {c A6}, c A6 There are only two possible states: switching to B2 or remaining in A. By traversing these two states, if there is a state in which the load rates of A and B2 are both less than 60%, it can be concluded that "the heavy overload of distribution transformer A can be solved by transferring the power supply to low-voltage users from the surrounding distribution transformers B1, B2,..."; otherwise, it can be concluded that "the heavy overload of distribution transformer A cannot be solved by transferring the power supply to low-voltage users from the surrounding distribution transformers B1, B2,...".

[0081] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the described order of actions, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

[0082] Through the description of the above implementation methods, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a number of instructions for a terminal device (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods described in each embodiment of the present application.

[0083] According to an embodiment of the present invention, there is also provided a heavy overload processing device for a distribution station transformer for implementing the above-mentioned heavy overload processing method for a distribution station transformer. Figure 4 is a schematic diagram of a heavy overload processing device for a distribution station transformer according to an embodiment of the present invention, such as Figure 4 As shown, the device comprises: a first determining unit 41, a second determining unit 43, a first acquiring unit 45, a second acquiring unit 47 and a first processing unit 49. The heavy overload processing device for the transformer of the power distribution station is described in detail below.

[0084] The first determination unit 41 is used to determine, when the first distribution station transformer is heavily overloaded, that a candidate distribution station transformer whose first distance from the first distribution station transformer is not greater than a first predetermined distance is a second distribution station transformer, wherein the heavy overload indicates that the first load rate of the first distribution station transformer is greater than a predetermined load rate, and the candidate distribution station transformer refers to a distribution station transformer located within a predetermined range of the location of the first distribution station transformer and whose load rate is not greater than the predetermined load rate.

[0085] The second determination unit 43 is used to determine that the first low-voltage user that meets the guideline constraint condition is a cutover low-voltage user, wherein the guideline constraint condition includes that the second distance between the corresponding low-voltage user and the distribution station transformer is not greater than the second predetermined distance, the corresponding low-voltage user refers to an electric power user supplied by the distribution station transformer, the second predetermined distance is less than the first predetermined distance, the first low-voltage user refers to an electric power user supplied by the first distribution station transformer, and the cutover low-voltage user is an electric power user that needs to be cutover from the first distribution station transformer to the second distribution station transformer.

[0086] The first acquisition unit 45 is used to simulate a cutover process of cutting over a low-voltage user from a first distribution station transformer to a second distribution station transformer to obtain a simulation result.

[0087] The second acquisition unit 47 is used to judge the feasibility of the cutover strategy based on the simulation results according to the comparison results of the first load rate of the first distribution station transformer and the second load rate of the second distribution station transformer after the cutover with the predetermined load rate, and obtain a judgment result, wherein the cutover strategy is: cutover the cutover low-voltage user from the first distribution station transformer to the second distribution station transformer.

[0088] The first processing unit 49 is used to cut over the low-voltage user from the first distribution station transformer to the second distribution station transformer according to the cutover strategy when the judgment result indicates that the feasibility of the cutover strategy meets the feasibility requirement, so that the first load rate of the first distribution station transformer is not greater than the predetermined load rate.

[0089] It should be noted here that the above-mentioned first determination unit 41, second determination unit 43, first acquisition unit 45, second acquisition unit 47 and first processing unit 49 correspond to steps S202 to S210 in the above-mentioned embodiments, and the five units are the same as the instances and application scenarios implemented by the corresponding steps, but are not limited to the contents disclosed in the above-mentioned embodiments.

[0090] As can be seen from the above, in the scheme recorded in the above embodiment of the present invention, the first determination unit can be used to determine that the candidate distribution station transformer whose first distance from the first distribution station transformer is not greater than the first predetermined distance is the second distribution station transformer when the first distribution station transformer is heavily overloaded, wherein the heavy overload indicates that the first load rate of the first distribution station transformer is greater than the predetermined load rate, and the candidate distribution station transformer refers to the distribution station transformer located within the predetermined range of the location of the first distribution station transformer and whose load rate is not greater than the predetermined load rate; then the second determination unit is used to determine that the first low-voltage user that meets the guideline constraint condition is the cutover low-voltage user, wherein the guideline constraint condition includes that the second distance between the corresponding low-voltage user and the distribution station transformer is not greater than the second predetermined distance, the corresponding low-voltage user refers to the power user supplied by the distribution station transformer, the second predetermined distance is less than the first predetermined distance, the first low-voltage user refers to the power user supplied by the first distribution station transformer, and the cutover low-voltage user is the power user that needs to be cutover from the first distribution station transformer to the second distribution station transformer; then the first acquisition unit is used to simulate the cutover process of the cutover low-voltage user from the first distribution station transformer to the second distribution station transformer to obtain a simulation result; Then, the second acquisition unit is used to judge the feasibility of the cutover strategy based on the simulation results according to the comparison results of the first load rate of the first distribution station transformer and the second load rate of the second distribution station transformer after the cutover with the predetermined load rate, and obtain the judgment result, wherein the cutover strategy is: cutover the cutover low-voltage user from the first distribution station transformer to the second distribution station transformer; finally, the first processing unit is used to cutover the cutover low-voltage user from the first distribution station transformer to the second distribution station transformer according to the cutover strategy when the judgment result indicates that the feasibility of the cutover strategy meets the feasibility requirement, so that the first load rate of the first distribution station transformer is not greater than the predetermined load rate, thereby achieving the purpose of judging the feasibility of the cutover strategy of solving the heavy overload of the distribution transformer by cutting over the load from the distribution transformer with lighter surrounding load under the premise of considering the guideline constraint, and solving the heavy overload of the distribution transformer according to the strategy when feasible, and achieving the technical effect of being able to quickly screen and verify when facing a large number of heavily overloaded distribution transformers based on the guideline constraint, greatly reducing the number of solutions that require manual analysis and evaluation, improving processing efficiency, shortening the time for formulating solutions to solve heavy overload, and providing more timely and accurate technical support for power grid planning and operation.

[0091] Therefore, the technical solution provided by the above-mentioned embodiments of the present invention solves the technical problem that in the related art, when the transformer of the distribution network is heavily overloaded, manual analysis solutions are usually relied upon, which leads to omissions or errors and low efficiency when facing a large number of heavily overloaded distribution transformers.

[0092] Optionally, the second determination unit includes: a first acquisition module, used to traverse and obtain the third distance between all second low-voltage users powered by each second distribution station transformer and the second distribution station transformer, wherein the second low-voltage user refers to the power user powered by the second distribution station transformer; a first determination module, used to determine that the second distribution station transformer is the target distribution station transformer when the third distance between all second low-voltage users powered by the second distribution station transformer and the second distribution station transformer is not greater than the second predetermined distance; a second acquisition module, used to traverse and obtain the connection distance between each first low-voltage user in the first distribution station transformer and each target distribution station transformer; a second determination module, used to determine that the first low-voltage user whose connection distance is not greater than the second predetermined distance and the target distribution station transformer are respectively the cutover low-voltage user and the cutover distribution station transformer corresponding to the cutover low-voltage user, wherein the cutover distribution station transformer refers to the second distribution station transformer that receives the cutover low-voltage user.

[0093] Optionally, the second acquisition unit includes: a third acquisition module, used to compare the first load rate with the predetermined load rate to obtain a first comparison result; a fourth acquisition module, used to compare the second load rate with the predetermined load rate to obtain a second comparison result; a third determination module, used to determine that the feasibility of the cutover strategy does not meet the feasibility requirements when the first comparison result indicates that the first load rate is greater than the predetermined load rate; a fourth determination module, used to determine that the feasibility of the cutover strategy meets the feasibility requirements when the first comparison result indicates that the first load rate is not greater than the predetermined load rate and the second comparison result indicates that all second load rates are not greater than the predetermined load rate; a fifth acquisition module, used to adjust the cutover strategy when the first comparison result indicates that the first load rate is not greater than the predetermined load rate and the second comparison result indicates that at least one second load rate is greater than the predetermined load rate, so as to re-judge the feasibility of the cutover strategy and obtain a judgment result.

[0094] Optionally, the fifth acquisition module includes: a first determination submodule, used to determine that the second distribution station transformer whose second load rate is not greater than the predetermined load rate is a feasible distribution station transformer, and determine that the second distribution station transformer whose second load rate is greater than the predetermined load rate is an infeasible distribution station transformer; a second determination submodule, used to determine that the cutover low-voltage user received by the feasible distribution station transformer is the first cutover low-voltage user, and determine that the cutover low-voltage user received by the infeasible distribution station transformer is the second cutover low-voltage user; a third determination submodule, used to determine that the second cutover low-voltage user that is the same as the first cutover low-voltage user is the target second cutover low-voltage user; a control submodule, used to control the infeasible distribution station transformer to stop supplying power to the target second cutover low-voltage user, and then obtain a third load rate of the infeasible distribution station transformer; the first acquisition submodule, used to re-judge the feasibility of the cutover strategy according to the third comparison result between the third load rate and the predetermined load rate to obtain a judgment result.

[0095] Optionally, the first acquisition submodule includes: a second acquisition submodule, which is used to compare the third load rate with the predetermined load rate to obtain a third comparison result; a fourth determination submodule, which is used to determine that the feasibility of the cutover strategy meets the feasibility requirements when the third comparison result indicates that the third load rate is not greater than the predetermined load rate; a fifth determination submodule, which is used to determine that the infeasible distribution station transformer with the third load rate greater than the predetermined load rate is the target infeasible distribution station transformer when the third comparison result indicates that the third load rate is greater than the predetermined load rate; and a sixth determination submodule, which is used to determine that the target infeasible distribution station transformer receives the second cutover strategy. The low-voltage user is a candidate second cutover low-voltage user; a third acquisition submodule is used to obtain a fourth load rate of the target infeasible distribution station transformer and the first distribution station transformer when the candidate second cutover low-voltage user is in different connection states, wherein the connection state at least includes: the candidate second cutover low-voltage user remains in the first distribution station transformer and continues to be powered by the first distribution station transformer, and the candidate second cutover low-voltage user is cutover to the second distribution station transformer and is powered by the second distribution station transformer; a fourth acquisition submodule is used to re-judge the feasibility of the cutover strategy according to a fourth comparison result between the fourth load rate and the predetermined load rate to obtain a judgment result.

[0096] Optionally, the fourth acquisition submodule includes: a seventh determination submodule, used to determine that when at least one fourth load rate is not greater than a predetermined load rate, the judgment result is: the feasibility of the cutover strategy meets the feasibility requirements; an eighth determination submodule, used to determine that when all fourth load rates are greater than a predetermined load rate, the judgment result is: the feasibility of the cutover strategy does not meet the feasibility requirements.

[0097] Optionally, the heavy overload processing device of the distribution station transformer also includes: a second processing unit, which is used to process the heavy overload of the first distribution station transformer according to the processing strategy when the feasibility of the cutover strategy does not meet the feasibility requirements, so that the first load rate of the first distribution station transformer is not greater than the predetermined load rate, wherein the processing strategy at least includes: adding a new distribution station transformer to receive the first low-voltage user and increasing the capacity of the first distribution station transformer by a predetermined amount.

[0098] According to one aspect of an embodiment of the present invention, a system for handling a heavy overload of a transformer in a distribution station is provided. The system for handling a heavy overload of a transformer in a distribution station uses any of the above-mentioned methods for handling a heavy overload of a transformer in a distribution station.

[0099] According to one aspect of an embodiment of the present invention, a computer-readable storage medium is provided, the computer-readable storage medium comprising a stored program, wherein the program executes any one of the above-mentioned methods for handling heavy overload of a transformer in a distribution station.

[0100] Optionally, in this embodiment, the computer-readable storage medium may be located in any one of the computer terminals in a computer terminal group in a computer network, or in any one of the communication devices in a communication device group.

[0101] Optionally, in this embodiment, the computer-readable storage medium is configured to store program codes for executing the following steps: in the case where the first distribution station transformer is heavily overloaded, determining that a candidate distribution station transformer whose first distance from the first distribution station transformer is not greater than a first predetermined distance is a second distribution station transformer, wherein the heavy overload indicates that the first load rate of the first distribution station transformer is greater than the predetermined load rate, and the candidate distribution station transformer refers to a distribution station transformer located within a predetermined range of the location of the first distribution station transformer and whose load rate is not greater than the predetermined load rate; determining that a first low-voltage user that meets the guideline constraint conditions is a cutover low-voltage user, wherein the guideline constraint conditions include that the second distance between the corresponding low-voltage user and the distribution station transformer is not greater than the second predetermined distance, the corresponding low-voltage user refers to an electric power user supplied by the distribution station transformer, the second predetermined distance is less than the first predetermined distance, and the first low-voltage user Refers to the power users supplied by the transformer of the first distribution station, and the cutover low-voltage users are the power users that need to be cutover from the transformer of the first distribution station to the transformer of the second distribution station; the cutover process of the cutover low-voltage users from the transformer of the first distribution station to the transformer of the second distribution station is simulated to obtain the simulation result; based on the simulation result, the feasibility of the cutover strategy is judged according to the comparison results of the first load rate of the transformer of the first distribution station and the second load rate of the transformer of the second distribution station after the cutover with the predetermined load rate, and the judgment result is obtained, wherein the cutover strategy is: cutover the cutover low-voltage users from the transformer of the first distribution station to the transformer of the second distribution station; when the judgment result indicates that the feasibility of the cutover strategy meets the feasibility requirements, the cutover low-voltage users are cutover from the transformer of the first distribution station to the transformer of the second distribution station according to the cutover strategy, so that the first load rate of the transformer of the first distribution station is not greater than the predetermined load rate.

[0102] Optionally, in this embodiment, the computer-readable storage medium is configured to store program code for executing the following steps: traversing and obtaining the third distance between all second low-voltage users powered by each second distribution station transformer and the second distribution station transformer, wherein the second low-voltage user refers to the power user powered by the second distribution station transformer; when the third distance between all second low-voltage users powered by the second distribution station transformer and the second distribution station transformer is not greater than the second predetermined distance, determining that the second distribution station transformer is the target distribution station transformer; traversing and obtaining the connection distance between each first low-voltage user in the first distribution station transformer and each target distribution station transformer; determining that the first low-voltage user whose connection distance is not greater than the second predetermined distance and the target distribution station transformer are respectively the cutover low-voltage user and the cutover distribution station transformer corresponding to the cutover low-voltage user, wherein the cutover distribution station transformer refers to the second distribution station transformer that receives the cutover low-voltage user.

[0103] Optionally, in this embodiment, the computer-readable storage medium is configured to store program codes for executing the following steps: comparing the first load rate with the predetermined load rate to obtain a first comparison result; comparing the second load rate with the predetermined load rate to obtain a second comparison result; when the first comparison result indicates that the first load rate is greater than the predetermined load rate, determining that the judgment result is: the feasibility of the cutover strategy does not meet the feasibility requirements; when the first comparison result indicates that the first load rate is not greater than the predetermined load rate, and the second comparison result indicates that all second load rates are not greater than the predetermined load rate, determining that the judgment result is: the feasibility of the cutover strategy meets the feasibility requirements; when the first comparison result indicates that the first load rate is not greater than the predetermined load rate, and the second comparison result indicates that at least one second load rate is greater than the predetermined load rate, adjusting the cutover strategy to re-judge the feasibility of the cutover strategy to obtain a judgment result.

[0104] Optionally, in this embodiment, the computer-readable storage medium is configured to store program codes for executing the following steps: determining that a second distribution station transformer whose second load rate is not greater than a predetermined load rate is a feasible distribution station transformer, and determining that a second distribution station transformer whose second load rate is greater than a predetermined load rate is an infeasible distribution station transformer; determining that a cutover low-voltage user received by a feasible distribution station transformer is a first cutover low-voltage user, and determining that a cutover low-voltage user received by an infeasible distribution station transformer is a second cutover low-voltage user; determining that a second cutover low-voltage user that is the same as the first cutover low-voltage user is a target second cutover low-voltage user; obtaining a third load rate of the infeasible distribution station transformer after controlling the infeasible distribution station transformer to stop supplying power to the target second cutover low-voltage user; and re-judging the feasibility of the cutover strategy based on a third comparison result between the third load rate and the predetermined load rate to obtain a judgment result.

[0105] Optionally, in this embodiment, the computer-readable storage medium is configured to store program codes for executing the following steps: comparing the third load rate with the predetermined load rate to obtain a third comparison result; when the third comparison result indicates that the third load rate is not greater than the predetermined load rate, determining that the judgment result is: the feasibility of the cutover strategy meets the feasibility requirement; when the third comparison result indicates that the third load rate is greater than the predetermined load rate, determining that the infeasible distribution station transformer whose third load rate is greater than the predetermined load rate is the target infeasible distribution station transformer; determining that the second cutover low-voltage user received by the target infeasible distribution station transformer is the candidate second cutover low-voltage user; obtaining the fourth load rate of the target infeasible distribution station transformer and the first distribution station transformer when the candidate second cutover low-voltage user is in different connection states, wherein the connection state at least includes: the candidate second cutover low-voltage user is retained in the first distribution station transformer and continues to be powered by the first distribution station transformer, and the candidate second cutover low-voltage user is cutover to the second distribution station transformer and powered by the second distribution station transformer; re-judging the feasibility of the cutover strategy according to the fourth comparison result between the fourth load rate and the predetermined load rate to obtain a judgment result.

[0106] Optionally, in this embodiment, the computer-readable storage medium is configured to store program code for executing the following steps: when at least one fourth load rate is not greater than a predetermined load rate, determining that the judgment result is: the feasibility of the cutover strategy meets the feasibility requirements; when all fourth load rates are greater than the predetermined load rate, determining that the judgment result is: the feasibility of the cutover strategy does not meet the feasibility requirements.

[0107] Optionally, in this embodiment, the computer-readable storage medium is configured to store program code for executing the following steps: when the feasibility of the cutover strategy does not meet the feasibility requirements, processing the heavy overload of the first distribution station transformer according to the processing strategy so that the first load rate of the first distribution station transformer is not greater than the predetermined load rate, wherein the processing strategy at least includes: adding a new distribution station transformer to receive the first low-voltage user and increasing the capacity of the first distribution station transformer by a predetermined amount.

[0108] According to one aspect of an embodiment of the present invention, a processor is provided, and the processor is used to run a program, wherein when the program is run, any one of the above-mentioned methods for handling heavy overload of a transformer in a distribution station is executed.

[0109] According to one aspect of an embodiment of the present invention, a computer program product is provided, comprising computer instructions, and when the computer instructions are executed by a processor, any one of the above-mentioned methods for handling heavy overload of a transformer in a distribution station is executed.

[0110] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0111] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0112] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0113] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0114] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0115] If the integrated unit is implemented in the form of 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, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.

[0116] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for handling heavy overload of a transformer in a distribution station, characterized in that: include: In the case where the first distribution station transformer is heavily overloaded, determining a candidate distribution station transformer whose first distance from the first distribution station transformer is not greater than a first predetermined distance as the second distribution station transformer, wherein the heavy overload indicates that a first load rate of the first distribution station transformer is greater than a predetermined load rate, and the candidate distribution station transformer refers to a distribution station transformer located within a predetermined range of the location of the first distribution station transformer and whose load rate is not greater than the predetermined load rate; Determine that the first low-voltage user that meets the guideline constraint condition is the cutover low-voltage user, wherein the guideline constraint condition includes that the second distance between the corresponding low-voltage user and the distribution station transformer is not greater than the second predetermined distance, the corresponding low-voltage user refers to the power user supplied by the distribution station transformer, the second predetermined distance is less than the first predetermined distance, the first low-voltage user refers to the power user supplied by the first distribution station transformer, and the cutover low-voltage user is the power user that needs to be cutover from the first distribution station transformer to the second distribution station transformer; Simulating a cutover process of the cutover low-voltage user from the first distribution station transformer to the second distribution station transformer to obtain a simulation result; Based on the simulation result, the feasibility of the cutover strategy is judged according to the comparison results of the first load rate of the first distribution station transformer and the second load rate of the second distribution station transformer after the cutover with the predetermined load rate, and a judgment result is obtained, wherein the cutover strategy is: cutover the cutover low-voltage user from the first distribution station transformer to the second distribution station transformer; When the judgment result indicates that the feasibility of the cutover strategy meets the feasibility requirement, the cutover low-voltage user is cutovered from the first distribution station transformer to the second distribution station transformer according to the cutover strategy, so that the first load rate of the first distribution station transformer is not greater than the predetermined load rate.

2. The method for handling heavy overload of a distribution station transformer according to claim 1, characterized in that: Determining the first low-voltage user that meets the guideline constraint condition as the cutover low-voltage user includes: Traverse and obtain the third distance between all second low-voltage users powered by each second distribution station transformer and the second distribution station transformer, wherein the second low-voltage user refers to the power user powered by the second distribution station transformer; In the case where the third distance between all second low-voltage users supplied by the second distribution station transformer and the second distribution station transformer is not greater than the second predetermined distance, determining the second distribution station transformer as the target distribution station transformer; Traversing and obtaining the connection distance between each of the first low-voltage users in the first distribution station transformer and each of the target distribution station transformers; Determine that the first low-voltage user whose connection distance is not greater than the second predetermined distance and the target distribution station transformer are respectively the cutover low-voltage user and the cutover distribution station transformer corresponding to the cutover low-voltage user, wherein the cutover distribution station transformer refers to the second distribution station transformer that receives the cutover low-voltage user.

3. The method for handling heavy overload of a distribution station transformer according to claim 1, characterized in that: The feasibility of the cutover strategy is judged based on the simulation result according to the comparison results of the first load rate of the first distribution station transformer and the second load rate of the second distribution station transformer after the cutover with the predetermined load rate, and the judgment result is obtained, including: Comparing the first load rate with the predetermined load rate to obtain a first comparison result; comparing the second load rate with the predetermined load rate to obtain a second comparison result; In a case where the first comparison result indicates that the first load rate is greater than the predetermined load rate, determining the judgment result as: the feasibility of the cutover strategy does not meet the feasibility requirement; When the first comparison result indicates that the first load rate is not greater than the predetermined load rate, and the second comparison result indicates that all the second load rates are not greater than the predetermined load rate, determining that the judgment result is: the feasibility of the cutover strategy meets the feasibility requirement; When the first comparison result indicates that the first load rate is not greater than the predetermined load rate, and the second comparison result indicates that at least one of the second load rates is greater than the predetermined load rate, the cutover strategy is adjusted to re-judge the feasibility of the cutover strategy and obtain the judgment result.

4. The method for handling heavy overload of a distribution station transformer according to claim 3, characterized in that: When the first comparison result indicates that the first load rate is not greater than the predetermined load rate, and the second comparison result indicates that at least one of the second load rates is greater than the predetermined load rate, adjusting the cutover strategy to re-judge the feasibility of the cutover strategy, and obtaining the judgment result includes: Determine the second distribution station transformer whose second load rate is not greater than the predetermined load rate as a feasible distribution station transformer, and determine the second distribution station transformer whose second load rate is greater than the predetermined load rate as an infeasible distribution station transformer; Determine the cutover low-voltage user received by the feasible distribution station transformer as a first cutover low-voltage user, and determine the cutover low-voltage user received by the infeasible distribution station transformer as a second cutover low-voltage user; determining the second cutover low-voltage user that is the same as the first cutover low-voltage user as a target second cutover low-voltage user; After controlling the transformer of the infeasible distribution station to stop supplying power to the target second cutover low-voltage user, obtaining a third load rate of the transformer of the infeasible distribution station; The feasibility of the cutover strategy is re-judged according to a third comparison result between the third load rate and the predetermined load rate to obtain the judgment result.

5. The method for handling heavy overload of a transformer in a distribution station according to claim 4, characterized in that: Re-judging the feasibility of the cutover strategy according to a third comparison result between the third load rate and the predetermined load rate to obtain the judgment result, including: comparing the third load rate with the predetermined load rate to obtain the third comparison result; In a case where the third comparison result indicates that the third load rate is not greater than the predetermined load rate, determining the judgment result as: the feasibility of the cutover strategy meets the feasibility requirement; In the case where the third comparison result indicates that the third load rate is greater than the predetermined load rate, determining the infeasible distribution station transformer whose third load rate is greater than the predetermined load rate as a target infeasible distribution station transformer; Determine the second cutover low-voltage user received by the target infeasible distribution station transformer as a candidate second cutover low-voltage user; Obtaining a fourth load rate of the target infeasible distribution station transformer and the first distribution station transformer when the candidate second cutover low-voltage user is in different connection states, wherein the connection state at least includes: the candidate second cutover low-voltage user remains in the first distribution station transformer and continues to be powered by the first distribution station transformer, and the candidate second cutover low-voltage user is cutover to the second distribution station transformer and is powered by the second distribution station transformer; The feasibility of the cutover strategy is re-judged according to a fourth comparison result between the fourth load rate and the predetermined load rate to obtain the judgment result.

6. The method for handling heavy overload of a transformer in a distribution station according to claim 5, characterized in that: Re-judging the feasibility of the cutover strategy according to a fourth comparison result between the fourth load rate and the predetermined load rate to obtain the judgment result, including: In a case where at least one of the fourth load rates is not greater than the predetermined load rate, determining that the judgment result is: the feasibility of the cutover strategy meets the feasibility requirement; In a case where all the fourth load rates are greater than the predetermined load rate, it is determined that the judgment result is: the feasibility of the cutover strategy does not meet the feasibility requirement.

7. The method for handling heavy overload of a transformer in a distribution station according to any one of claims 1 to 6, characterized in that: Also includes: When the feasibility of the cutover strategy does not meet the feasibility requirement, the heavy overload of the first distribution station transformer is processed according to the processing strategy so that the first load rate of the first distribution station transformer is not greater than the predetermined load rate, wherein the processing strategy at least includes: adding the distribution station transformer to receive the first low-voltage user and increasing the capacity of the first distribution station transformer by a predetermined amount.

8. A heavy overload handling device for a transformer in a distribution station, characterized in that: include: A first determining unit is used to determine, when a first distribution station transformer is heavily overloaded, that a candidate distribution station transformer whose first distance from the first distribution station transformer is not greater than a first predetermined distance is a second distribution station transformer, wherein the heavy overload indicates that a first load rate of the first distribution station transformer is greater than a predetermined load rate, and the candidate distribution station transformer refers to a distribution station transformer located within a predetermined range of a location of the first distribution station transformer and whose load rate is not greater than the predetermined load rate; A second determining unit is used to determine that a first low-voltage user that meets the guideline constraint condition is a cutover low-voltage user, wherein the guideline constraint condition includes that a second distance between the corresponding low-voltage user and the distribution station transformer is not greater than a second predetermined distance, the corresponding low-voltage user refers to an electric power user supplied by the distribution station transformer, the second predetermined distance is less than the first predetermined distance, the first low-voltage user refers to the electric power user supplied by the first distribution station transformer, and the cutover low-voltage user is the electric power user that needs to be cutover from the first distribution station transformer to the second distribution station transformer; A first acquisition unit is used to simulate a cutover process of the cutover low-voltage user from the first distribution station transformer to the second distribution station transformer to obtain a simulation result; A second acquisition unit is used to judge the feasibility of the cutover strategy based on the simulation result and the comparison result between the first load rate of the first distribution station transformer and the second load rate of the second distribution station transformer after the cutover and the predetermined load rate, and obtain a judgment result, wherein the cutover strategy is: cutover the cutover low-voltage user from the first distribution station transformer to the second distribution station transformer; The first processing unit is configured to, when the judgment result indicates that the feasibility of the cutover strategy meets the feasibility requirement, cutover the cutover low-voltage user from the first distribution station transformer to the second distribution station transformer according to the cutover strategy, so that the first load rate of the first distribution station transformer is not greater than the predetermined load rate.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored program, wherein the program executes the heavy overload processing method for a distribution station transformer according to any one of claims 1 to 7.

10. A computer program product comprising computer instructions, characterized in that: When the computer instructions are executed by the processor, the method for handling heavy overload of a transformer in a distribution station according to any one of claims 1 to 7 is performed.

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