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

Abstract

The present invention discloses a method and device for handling heavy overload of a distribution station transformer, and a computer program product. The method comprises: when a first distribution station transformer is heavily overloaded, determining a candidate distribution station transformer with a first distance between the first distribution station transformer and the second distribution station transformer being no greater than a first predetermined distance; determining a first low-voltage user that meets the guideline constraint condition as a cutover low-voltage user; simulating the process of cutover of the cutover low-voltage user from the first distribution station transformer to the second distribution station transformer, so as to judge the feasibility of the cutover strategy based on the simulation result, and cutover the cutover low-voltage user when its feasibility meets the requirement, so as to make the load rate of the first distribution station transformer meet the requirement. The present invention solves the technical problem that in the related art, when a transformer in the distribution network is heavily 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.

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 distribution network transformer experiences a severe overload, there are three traditional solutions: having a nearby, less-loaded distribution transformer take over the load, installing a new nearby distribution transformer to take over the load, or upgrading the existing transformer. When a distribution transformer experiences a severe overload, manual analysis of the load conditions of surrounding distribution transformers and the power consumption of low-voltage users is often relied upon to determine whether load shedding can resolve the issue. This manual analysis method is not only inefficient but also prone to omissions and errors when dealing with a large number of severely overloaded distribution transformers. This is especially true during peak periods, when thousands of distribution transformers may be severely overloaded daily, creating a significant workload for manual analysis.

[0003] In the above-mentioned related technologies, when a transformer in a distribution network is severely overloaded, manual analysis solutions are usually relied upon. This leads to omissions or errors and low efficiency when faced with a large number of heavily overloaded distribution transformers. No effective solution has been proposed so far. 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 in the related art that 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 faced with 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 as 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 a first low-voltage user that meets a guideline constraint condition 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 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 power user, the cutover low-voltage user is the power user that needs to be cutovered 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 result and 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; if 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.

[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 first low-voltage user in the first distribution station transformer and each target distribution station transformer; 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, based on the simulation result, the feasibility of the cutover strategy is judged according to 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, 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 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 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-evaluate 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; controlling the infeasible distribution station transformer to stop supplying power to the target second cutover low-voltage user, and then obtaining a third load rate of the infeasible distribution station transformer; and re-evaluating the feasibility of the cutover strategy based on 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 distribution station transformer is a candidate second cutover low-voltage user; fourth load rates 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 are obtained, wherein the connection states at least include: the candidate second cutover low-voltage user remains in the first distribution station transformer and continues to be supplied with power by the first distribution station transformer, and the candidate second cutover low-voltage user is cutovered to the second distribution station transformer and is supplied with power 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 the 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 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 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, configured to, when a first distribution station transformer is heavily overloaded, determine that a candidate distribution station transformer having a first distance from the first distribution station transformer that 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 having a load rate that is not greater than the predetermined load rate; a second determining unit, configured to determine that a first low-voltage user that meets a guideline constraint condition is 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 electricity 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 electricity 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 to obtain a simulation result; the second acquisition unit is used to judge the feasibility of the cutover strategy based on the simulation result and the comparison result 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 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 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.

[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, when the first comparison result indicates that the first load rate is greater than the predetermined load rate, determine that the judgment result is: the feasibility of the cutover strategy does not meet the feasibility requirement; a fourth determination module, used to, 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, determine that the judgment result is: the feasibility of the cutover strategy meets the feasibility requirement; a fifth acquisition module, used to, 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, adjust the cutover strategy 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 a 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 based on 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, configured to compare the third load rate with the predetermined load rate to obtain the third comparison result; a fourth determination submodule, configured to, when the third comparison result indicates that the third load rate is not greater than the predetermined load rate, determine that the judgment result is: the feasibility of the cutover strategy meets the feasibility requirement; a fifth determination submodule, configured to, when the third comparison result indicates that the third load rate is greater than the predetermined load rate, 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; a sixth determination submodule, configured 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; the 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; the 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, 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 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 system for handling a heavy overload of a distribution station transformer is provided. The system for handling a heavy overload of a distribution station transformer uses any one of the above-mentioned methods for handling a heavy overload of 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 a heavy overload of a distribution station transformer.

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

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

[0023] In an embodiment of the present invention, 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 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 conditions is determined to be 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 a second predetermined distance, the corresponding low-voltage user refers to an electricity 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 electricity user supplied by the first distribution station transformer. Users, the cutover low-voltage users are power users that need to be cutovered 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, to obtain a judgment result, 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 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. Through the above technical solution, 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 is judged under the premise of considering the guideline constraints, 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 overload, and provides more timely and accurate technical support for power grid planning and operation. It also solves the technical problem in related technologies that when the transformer of the distribution network is heavily overloaded, the analysis solution usually relies on manual labor, 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 1This is a hardware structure block diagram of a mobile terminal for a method for handling heavy overload of a distribution station transformer according to an embodiment of the present invention;

[0026] Figure 2 is a flow chart of a method for handling a heavy overload of a distribution station transformer 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 4 is a schematic diagram of a heavy overload processing device for a distribution station transformer according to an embodiment of the present invention. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions 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 embodiments described 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 making creative efforts should fall within the scope of protection of the present invention.

[0030] It should be noted that the terms "first", "second", etc. in the description 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 numbers 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 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 described in the background, related art often relies on manual analysis and resolution when transformers in distribution networks are severely overloaded. This can easily lead to omissions or errors, and is inefficient when dealing with a large number of severely overloaded distribution transformers. To address these shortcomings, embodiments of the present invention provide a method and apparatus for handling severe overloads of distribution station transformers, as well as a computer program product.

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to 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 This is a hardware structure block diagram of a mobile terminal for a method for handling heavy overload of a distribution station transformer 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) a processor 102 (the processor 102 may include but is not limited to a microprocessor MCU or a programmable logic device FPGA and other processing devices) and a memory 104 for storing data, wherein the mobile terminal may also include a transmission device 106 and an input and output device 108 for communication functions. It will 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 than shown, or with Figure 1 Different configurations shown.

[0034] Memory 104 can be used to store computer programs, such as application software programs and modules, such as the computer program corresponding to the method for handling heavy overload of a distribution station transformer in an embodiment of the present invention. Processor 102 executes the computer program stored in memory 104 to execute various functional applications and data processing, thereby implementing the aforementioned method. Memory 104 may include high-speed random access memory (RAM) and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, memory 104 may further include memory remotely located from processor 102, which can be connected to the mobile terminal via a network. Examples of such networks include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof. Transmission device 106 is used to receive or transmit data via a network. Specific examples of such networks may include a wireless network provided by the mobile terminal's telecommunications provider. In one example, transmission device 106 includes a network interface controller (NIC), which can be connected to other network devices via a base station to enable communication 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 FIG. 1 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 includes the following steps:

[0037] In step S202, 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 as a second distribution station transformer, wherein the heavily overloaded condition 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.

[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 low-voltage users 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, is it possible to consider not building a new distribution transformer or increasing the capacity of the original distribution transformer, but to solve the problem of heavy overload by transferring the power supply to the low-voltage users supplied by distribution transformer A to the surrounding distribution transformers? The embodiment provided by 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 being cut over and the surrounding transformer receiving the load after the cutover is not greater than β lim In practice, r lim Generally, 400 meters is used. 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] In the case of heavy overload in distribution transformer A, considering the constraints of planning technical guidelines, it is possible to screen out multiple distribution transformers with a load rate less than β 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 (ie, the selected transformers of the second distribution station).

[0042] Step S204: Determine 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 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 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 the 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 connection is still less than r lim Low voltage users.

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

[0045] In this embodiment, the feasibility of the cutover strategy of having distribution transformers with lighter loads in the surrounding areas take over the load to reduce the load of the heavily overloaded distribution transformer can be first examined from a theoretical perspective. Therefore, the cutover process can be simulated and analyzed first, so as to facilitate further analysis based on the simulation results.

[0046] Step S208 , based on the simulation results and by comparing 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, 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: If 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 rate of the distribution transformer A and the distribution transformer Bi receiving the load is 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 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 re-evaluated. If the feasibility of the cutover strategy does not meet the feasibility requirements under all possible circumstances, it is considered that it is not feasible to use this 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; the first low-voltage user that meets the guideline constraint condition is determined to be 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 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; 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 results judge the feasibility of the cutover strategy 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, and obtain a judgment result. Among them, the cutover strategy is to cutover the low-voltage users from the first distribution station transformer to the second distribution station transformer. If the judgment result indicates that the feasibility of the cutover strategy meets the feasibility requirements, the cutover low-voltage users are 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 does not exceed the predetermined load rate. The feasibility of the cutover strategy of cutting over the load from the surrounding distribution transformer with lighter loads to solve the distribution transformer overload is judged under the premise of considering the guideline constraints, and the overload of the distribution transformer is solved according to the strategy when feasible. The technical effect of rapid screening and verification of a large number of heavily overloaded distribution transformers based on the guideline constraints is achieved. This greatly reduces the number of solutions requiring manual analysis and evaluation, improves processing efficiency, shortens the time to develop solutions for heavy overload, 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 severely 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 form 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, and there are m low-voltage users in distribution transformer A. For any low-voltage user c 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 transformer A Aa and the fire point set element C of 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 a first low-voltage user that meets the guideline constraint condition is a cutover low-voltage user includes: traversing and obtaining a third distance between all second low-voltage users supplied by each second distribution station transformer and the second distribution station transformer, wherein the second low-voltage user refers to an electric power user supplied by the second distribution station transformer; determining the second distribution station transformer as a target distribution station transformer when 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 a second predetermined distance; traversing and obtaining a 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 and the target distribution station transformer, whose connection distance is not greater than the second predetermined distance, 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 low-voltage users that can be switched to each distribution transformer Bi (b=1, 2, ..., k) that meets 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 element of the falling point set is 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 constraint, 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 collection C A-Bi ; Use this traversal to make judgments until all distribution transformers Bi are traversed, and the set C of low-voltage users that are cut over for each distribution transformer Bi that meets the guideline constraints is obtained. A-Bi .

[0056] According to the above embodiment of the present invention, based on the simulation results 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, the feasibility of the cutover strategy is judged to obtain a 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; if the first comparison result indicates that the first load rate is greater than the predetermined load rate, determining that the feasibility of the cutover strategy does not meet the feasibility requirement; if 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 feasibility of the cutover strategy meets the feasibility requirement; if 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 a judgment result.

[0057] In this embodiment, the feasibility of the cutover strategy of cutting over the load of the heavily overloaded distribution transformer by cutting over the load of the surrounding distribution transformer with lighter load is mainly studied from a theoretical perspective. If the load rate of distribution transformer A still exceeds β after the cutover, 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 the load factor of at least one distribution transformer Bi exceeds 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 β 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 β 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; in the case of 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-evaluated 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-evaluate the feasibility of the cutover strategy and obtain a judgment result, including: determining the second distribution station transformer whose second load rate is not greater than the predetermined load rate as a feasible distribution station transformer, and determining the second distribution station transformer whose second load rate is greater than the predetermined load rate as an infeasible distribution station transformer; determining the cutover low-voltage user received by the feasible distribution station transformer as a first cutover low-voltage user, and determining 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 the target second cutover low-voltage user; controlling the infeasible distribution station transformer to stop supplying power to the target second cutover low-voltage user, and obtaining a third load rate of the infeasible distribution station transformer; and re-evaluating 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.

[0060] In this embodiment, the set C of low-voltage users to be cut over by 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 the load factor of at least one distribution transformer Bi exceeds 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 user after the cutover of distribution transformer A is no more than β lim The distribution transformer of is a feasible distribution transformer set {Bx1, Bx2, ...} of an infeasible distribution station transformer. The low-voltage user set of the distribution transformer A received by this set is And the load rate of the low-voltage user after the cutover of distribution transformer A is greater than β limThe distribution transformer is regarded as an infeasible distribution transformer set {By1, By2, ...} of an infeasible distribution station transformer; then the low-voltage users of distribution transformer A received by each distribution transformer Bi in the two sets are compared. If the low-voltage users of 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 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 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 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,…}, 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 stop receiving in order to A-Bi Update; then recalculate the load rate of each distribution transformer in the infeasible distribution transformer set {By1, By2, ...}, and then compare it 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, 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 includes: comparing the third load rate with the predetermined load rate to obtain a third comparison result; if the third comparison result indicates that the third load rate is not greater than the predetermined load rate, determining that the feasibility of the cutover strategy meets the feasibility requirement; if the third comparison result indicates that the third load rate is greater than the predetermined load rate, determining that the infeasible distribution station transformer having the third load rate greater than the predetermined load rate is a target infeasible distribution station transformer; determining that a second cutover low-voltage user received by the target infeasible distribution station transformer is a candidate second cutover low-voltage user; obtaining fourth load rates 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 states include at least: the candidate second cutover low-voltage user remains in the first distribution station transformer and continues to be supplied with power by the first distribution station transformer; and the candidate second cutover low-voltage user is cutovered to the second distribution station transformer and supplied with power by the second distribution station transformer; re-judging the feasibility of the cutover strategy based on the fourth comparison result between the fourth load rate and the predetermined load rate to obtain a judgment result.

[0064] In this embodiment, if the load rate of all distribution transformers Bi does not exceed β after deduplication, 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 Compare 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 In the state space composed of states, 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 both low-voltage users are powered by the distribution transformer A and the distribution transformer Bi respectively (this includes two cases, 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 based on 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 feasibility of the cutover strategy meets the feasibility requirement; when all fourth load rates are greater than the predetermined load rate, determining that the feasibility of the cutover strategy does not meet the feasibility requirement.

[0069] In this embodiment, if there is at least one connection state in which the load rate of the distribution transformer A and each distribution transformer in the set {Bz1, Bz2, ...} is not greater than β limm , then the cutover strategy is still feasible; if it is impossible to make the load rate of distribution transformer A and each distribution transformer in the set {Bz1, Bz2, ...} not greater than β under all connection stateslimm , the cutover strategy is considered 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 based on the feasibility of the cutover strategy under which the feasibility requirements are met. 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 further 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 analysis ultimately concludes that the feasibility of the cutover strategy does not meet the feasibility requirements, the heavy overload problem of distribution transformer A can be resolved 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] The following combination Figure 3 Another embodiment of the present invention will be described in detail. Figure 3 FIG. 4 is a schematic diagram of a heavy overload processing process of a distribution station transformer 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 a cutover strategy to cut over the low-voltage users of distribution transformer A to four distribution transformers B1-B4 to solve the severe overload problem of distribution transformer A is analyzed according to the following steps.

[0075] Step 1: Among distribution transformers B1-B4, the ones with a load rate less than 60% and a straight-line distance from 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 distribution transformer A is in C A-B1 ∪C A-B2 ∪C A-B4 ={C A2 , c A5 , c A6 , c A7 , c A8 After all the low-voltage users are cut over, if the load factor is still greater than 60% after measurement, it can be concluded that the heavy overload of distribution transformer A cannot be solved by switching the low-voltage users to the surrounding distribution transformers B1, B2, ... for power supply. 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 to low-voltage users from surrounding distribution transformers B1, B2, etc."; otherwise, go to 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%. A5 Since it is cut over to both B1 and B2, there is duplicate calculation. Here, c 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 to low-voltage users from 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. Traversing these two states, if there is a state in which the load rates of both A and B2 are 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 the surrounding distribution transformers B1, B2, etc."; otherwise, 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 the surrounding distribution transformers B1, B2, etc."

[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 this application is not limited by the order of the actions described, because according to this 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 this 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 the necessary general hardware platform, and of course it can also be implemented 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 enabling 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 Schematic diagram of a heavy overload processing device for a distribution station transformer according to an embodiment of the present invention. Figure 4 As shown, the device includes: 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 device for processing heavy overload of a transformer in a power distribution station is described in detail below.

[0084] The first determining unit 41 is configured to determine, in a case where 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 as the second distribution station transformer, wherein the heavily overloaded condition 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 is 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 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 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 configured to simulate a cutover process of cutting over a low-voltage user from a transformer in a first distribution station to a transformer in a second distribution station, and obtain a simulation result.

[0087] The second acquisition unit 47 is configured to determine 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, thereby obtaining a determination result, wherein the cutover strategy is to cutover the low-voltage user from the first distribution station transformer to the second distribution station transformer.

[0088] The first processing unit 49 is configured to, if the judgment result indicates that the feasibility of the cutover strategy satisfies the feasibility requirement, cutover the 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 a 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. The five units have the same instances and application scenarios as 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 described in the above embodiment of the present invention, when the first distribution station transformer is heavily overloaded, the first determining unit can be used to 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 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; then, the second determining unit is used to determine that a 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 an electricity 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 electricity user supplied by the first distribution station transformer, and the cutover low-voltage user is an electricity user that needs to be cutovered from the first distribution station transformer to the second distribution station transformer; then, the first obtaining 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, based on the simulation results, the second acquisition unit determines the feasibility of the cutover strategy by comparing 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, obtaining a determination result. The cutover strategy is to cutover the low-voltage user from the first distribution station transformer to the second distribution station transformer. Finally, if the determination result indicates that the feasibility of the cutover strategy meets the feasibility requirements, the first processing unit cuts over the low-voltage user from the first distribution station transformer to the second distribution station transformer in accordance with the cutover strategy, such that the first load rate of the first distribution station transformer is no greater than the predetermined load rate. This achieves the purpose of determining the feasibility of the cutover strategy of solving the heavy overload of the distribution transformer by cutting over the load from a distribution transformer with lighter surrounding loads under consideration of the guideline constraints, and solving the heavy overload of the distribution transformer according to the strategy when feasible. This achieves the technical effect of enabling rapid screening and verification of a large number of heavily overloaded distribution transformers based on the guideline constraints, significantly reducing the number of solutions requiring manual analysis and evaluation, improving processing efficiency, and shortening the time required to develop solutions to the heavy overload, thereby 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 severely 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 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.

[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 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 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 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 based on 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 supplied with power by the first distribution station transformer, and the candidate second cutover low-voltage user is cutover to the second distribution station transformer and is supplied with power by the second distribution station transformer; the 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, and 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 the 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 distribution station transformer is provided. The system for handling a heavy overload of a distribution station transformer uses any of the above-mentioned methods for handling a heavy overload of a distribution station transformer.

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

[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 code 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 a second predetermined distance, the corresponding low-voltage user refers to an electricity 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 power users supplied by the transformer of the first distribution station, and the cutover low-voltage users are power users that need to be cutovered from the transformer of the first distribution station to the transformer of the second distribution station; a 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 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 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, to obtain a judgment result, 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 cutovered 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 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.

[0103] Optionally, in this embodiment, the computer-readable storage medium is configured to store program code 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 code 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 the feasible distribution station transformer is a first cutover low-voltage user, and determining that a cutover low-voltage user received by the 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; 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-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 code for executing the following steps: comparing the third load rate with a predetermined load rate to obtain a third comparison result; if the third comparison result indicates that the third load rate is not greater than the predetermined load rate, determining that the feasibility of the cutover strategy meets the feasibility requirement; if the third comparison result indicates that the third load rate is greater than the predetermined load rate, determining that the infeasible distribution station transformer having a third load rate greater than the predetermined load rate is a target infeasible distribution station transformer; determining that a second cutover low-voltage user received by the target infeasible distribution station transformer is a candidate second cutover low-voltage user; obtaining fourth load rates 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 states at least include: the candidate second cutover low-voltage user remains in the first distribution station transformer and continues to be supplied with power by the first distribution station transformer, and the candidate second cutover low-voltage user is cutovered to the second distribution station transformer and supplied with power by the second distribution station transformer; and re-judging the feasibility of the cutover strategy based on 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 configured to run a program, wherein when the program is run, any one of the above-mentioned methods for handling a heavy overload of a distribution station transformer is executed.

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

[0110] The serial numbers of the above embodiments of the present invention are for description only 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 focus. 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 exemplary. For example, the division of the units can be a logical function division. In actual implementation, there may be other division methods, such as 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 separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple 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, the functional units in the various embodiments of the present invention may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or 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, 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. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server or 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, etc. Various 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 principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A method for handling heavy overload of a distribution station transformer, characterized in that: include: 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 as a second distribution station transformer, wherein the heavily overloaded condition 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 is 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 a first low-voltage user that satisfies a guideline constraint condition as 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; 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; The feasibility of the cutover strategy is judged based on the simulation results 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, 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; If 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 conditions as the cutover low-voltage user includes: Traversing and obtaining a third distance between all second low-voltage users supplied by each second distribution station transformer and the second distribution station transformer, wherein the second low-voltage user refers to the power user supplied by the second distribution station transformer; If 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 and according to 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, to obtain a 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; If the first comparison result indicates that the first load ratio is greater than the predetermined load ratio, determining the judgment result as: the feasibility of the cutover strategy does not meet the feasibility requirement; If the first comparison result indicates that the first load ratio is not greater than the predetermined load ratio, and the second comparison result indicates that all the second load ratios are not greater than the predetermined load ratio, 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 ratio is not greater than the predetermined load ratio, and the second comparison result indicates that at least one of the second load ratios is greater than the predetermined load ratio, adjusting the cutover strategy to re-evaluate the feasibility of the cutover strategy, and obtaining the judgment result includes: determining the second distribution station transformer whose second load factor is not greater than the predetermined load factor as a feasible distribution station transformer, and determining the second distribution station transformer whose second load factor is greater than the predetermined load factor 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 unfeasible distribution station to stop supplying power to the target second cutover low-voltage user, obtaining a third load rate of the transformer of the unfeasible distribution station; The feasibility of the cutover strategy is re-judged according to a third comparison result between the third load ratio and the predetermined load ratio to obtain the judgment result.

5. The method for handling heavy overload of a distribution station transformer 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 ratio and the predetermined load ratio to obtain the judgment result, including: comparing the third load rate with the predetermined load rate to obtain the third comparison result; If 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; If the third comparison result indicates that the third load rate is greater than the predetermined load rate, determining the infeasible distribution station transformer having the third load rate greater than the predetermined load rate as a target infeasible distribution station transformer; Determining the second cutover low-voltage user received by the target infeasible distribution station transformer as a candidate second cutover low-voltage user; Obtaining fourth load rates 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 states at least include: the candidate second cutover low-voltage user remains in the first distribution station transformer and continues to be supplied with power by the first distribution station transformer, and the candidate second cutover low-voltage user is cutovered to the second distribution station transformer and supplied with power 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 ratio and the predetermined load ratio to obtain the judgment result.

6. The method for handling heavy overload of a distribution station transformer 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 ratio and the predetermined load ratio 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 distribution station transformer 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 a 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, configured to, in a case where a first distribution station transformer is heavily overloaded, determine a candidate distribution station transformer having a first distance from the first distribution station transformer that is not greater than a first predetermined distance as a second distribution station transformer, wherein the heavily overloaded condition 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 is a distribution station transformer located within a predetermined range of a location of the first distribution station transformer and having a load rate that is not greater than the predetermined load rate; a second determining unit, configured to determine a first low-voltage user that satisfies a guideline constraint condition as 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 acquiring unit is configured 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 acquiring unit, configured to determine the feasibility of a cutover strategy based on the simulation result and a comparison result 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, to obtain a determination result, wherein the cutover strategy is: cutting over the cutover low-voltage user from the first distribution station transformer to the second distribution station transformer; The first processing unit is configured to, if 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 in accordance with 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 method for handling heavy overload of 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 a processor, the method for handling heavy overload of a distribution station transformer according to any one of claims 1 to 7 is executed.

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