Three-phase imbalance adjustment method and device, electronic equipment and storage medium

Abstract

The invention discloses a three-phase imbalance adjusting method and device, electronic equipment and a storage medium, and relates to the field of power system automatic control, and the adjusting method comprises the steps: collecting three-phase current data of a power system; calculating a three-phase unbalance degree based on the three-phase current data, and comparing the three-phase unbalance degree with a preset three-phase unbalance degree threshold to obtain a comparison result; under the condition that the comparison result indicates that the three-phase imbalance degree is greater than or equal to the three-phase imbalance degree threshold value, a three-phase imbalance adjustment strategy is obtained through iterative calculation based on a genetic algorithm; and generating a commutation instruction based on the three-phase imbalance adjustment strategy, controlling a remote control device to perform remote commutation operation based on the commutation instruction, and adjusting the three-phase imbalance of the power system. According to the invention, the technical problem that the adjustment efficiency is low when the three-phase imbalance problem is adjusted based on a connection method in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the field of automatic control of electric power systems, and in particular to a method and device for adjusting three-phase imbalance, electronic equipment and a storage medium. Background Art

[0002] At this stage, based on the rigid demand for power construction, the scale of the power system is becoming larger and larger, and the number of power loads is increasing. How to ensure the reliable and accident-free operation of the low-voltage distribution network and high-quality power supply is becoming more and more important. Three-phase imbalance is the most common problem in the current power system. It will cause a series of safety problems and energy consumption problems to the power system. In order to protect the safety of distribution equipment, ensure the quality of power supply, reduce network losses, and save energy, rapid adjustment of the three-phase imbalance of the power system is also an important task to ensure the normal operation of the power system.

[0003] When the three-phase load is unbalanced, zero-sequence current will appear between the windings of the normally operating distribution transformer. The zero-sequence current inside the distribution transformer will generate zero-sequence magnetic flux in the iron core. These zero-sequence magnetic fluxes may generate eddy current loops between the metal components of the distribution transformer, resulting in the appearance of circulating current. This current does not flow through the load to do work, but only circulates between the windings of the distribution transformer, causing the winding to heat up and always work in an overheated state. This will seriously affect the working time of the distribution transformer, reduce the working efficiency of the distribution transformer, and shorten the service life of the distribution transformer. In severe cases, the distribution transformer may even be directly burned, greatly reducing the power supply reliability of the low-voltage distribution network.

[0004] In the related art, the three-phase imbalance problem of the power system is adjusted through the connection method, and the line connection point is directly changed manually. This method is time-consuming and labor-intensive, and the adjustment efficiency is low. At the same time, the adjustment method is very complicated and troublesome, and due to safety requirements, the procedures are complicated, which wastes manpower and material resources.

[0005] To address the above-mentioned problems, no effective solution has been proposed yet. Summary of the invention

[0006] The embodiments of the present invention provide a method and device for adjusting three-phase imbalance, an electronic device and a storage medium, so as to at least solve the technical problem of low adjustment efficiency in the related art of adjusting the three-phase imbalance problem based on the connection method.

[0007] According to one aspect of an embodiment of the present invention, a method for adjusting three-phase imbalance is provided, comprising: collecting three-phase current data of an electric power system, wherein the three-phase current data comprises first-phase current data, second-phase current data and third-phase current data; calculating a three-phase imbalance based on the three-phase current data, and comparing the three-phase imbalance with a preset three-phase imbalance threshold to obtain a comparison result; when the comparison result indicates that the three-phase imbalance is greater than or equal to the three-phase imbalance threshold, obtaining a three-phase imbalance adjustment strategy based on iterative calculation of a genetic algorithm; generating a commutation instruction based on the three-phase imbalance adjustment strategy, and controlling a remote control device to perform a remote commutation operation based on the commutation instruction to adjust the three-phase imbalance of the electric power system.

[0008] Optionally, the step of collecting three-phase current data of the power system includes: installing a current sensor on a three-phase distribution bus of the power system; based on connecting the current sensor to the distribution bus of each phase, collecting current data from the distribution bus of each phase to obtain three-phase current data.

[0009] Optionally, the step of calculating the three-phase imbalance based on the three-phase current data includes: calculating the effective value of each phase current based on the three-phase current data to obtain the effective value of the first phase current, the effective value of the second phase current and the effective value of the third phase current; calculating the current average value based on the three-phase current data; and calculating the three-phase imbalance based on the effective value of each phase current and the current average value.

[0010] Optionally, the step of calculating the three-phase imbalance based on the effective value of each phase current and the current average value includes: calculating the difference between the effective value of the first phase current and the current average value to obtain a first difference; calculating the difference between the effective value of the second phase current and the current average value to obtain a second difference; calculating the difference between the effective value of the third phase current and the current average value to obtain a third difference; selecting the maximum value among the first difference, the second difference and the third difference; and obtaining the three-phase imbalance based on the ratio of the maximum value to the current average value.

[0011] Optionally, the step of obtaining a three-phase unbalanced adjustment strategy based on iterative calculation of a genetic algorithm includes: obtaining the power parameters and load nodes of the power system; constructing N phase-changing phase sequences as chromosomes of the genetic algorithm based on the power parameters and node loads of the power system; calculating the fitness value and the survival probability value of each chromosome; performing iterative calculation based on the fitness value and the survival probability value of each chromosome until the number of iterations reaches a preset iteration number to obtain a target phase-changing phase sequence for each load node; and generating a three-phase unbalanced adjustment strategy based on the target phase-changing phase sequence of each load node.

[0012] Optionally, the step of controlling a remote control device to perform remote commutation operation based on the commutation instruction to adjust the three-phase imbalance of the power system includes: adjusting the control circuits of the target phase and the non-target phase corresponding to each load node in the power system in turn based on the remote control device, thereby adjusting the three-phase imbalance of the power system, wherein the target phase represents the phase to be switched of each load node indicated by the commutation instruction, and the non-target phase represents the phase corresponding to each load node other than the target phase, and the control circuit of the target phase is composed of at least the AC contactor of the target phase and the auxiliary contact of the non-target phase.

[0013] Optionally, the step of adjusting the control circuits of the target phase and the non-target phase corresponding to each load node in the power system in sequence based on the remote control device includes: controlling the AC contactor corresponding to the target phase of each load node to close, and controlling the AC contactor corresponding to the non-target phase of each load node to open based on the remote control device; controlling the auxiliary contacts corresponding to the target of each load node to open, and controlling the auxiliary contacts corresponding to the non-target phase of each load node to close based on the remote control device.

[0014] According to another aspect of an embodiment of the present invention, a three-phase imbalance adjustment device is also provided, including: a collection unit, used to collect three-phase current data of an electric power system, wherein the three-phase current data includes first-phase current data, second-phase current data and third-phase current data; a comparison unit, used to calculate the three-phase imbalance based on the three-phase current data, and compare the three-phase imbalance with a preset three-phase imbalance threshold to obtain a comparison result; a calculation unit, used to obtain a three-phase imbalance adjustment strategy based on iterative calculation of a genetic algorithm when the comparison result indicates that the three-phase imbalance is greater than or equal to the three-phase imbalance threshold; an adjustment unit, used to generate a commutation instruction based on the three-phase imbalance adjustment strategy, and control a remote control device to perform a remote commutation operation based on the commutation instruction to adjust the three-phase imbalance of the electric power system.

[0015] Optionally, the collection unit includes: a first installation module, used to install a current sensor on the three-phase distribution bus of the power system; a first collection module, used to collect current data from the distribution bus of each phase based on the connection between the current sensor and the distribution bus of each phase to obtain three-phase current data.

[0016] Optionally, the comparison unit includes: a first calculation module, used to calculate the effective value of each phase current based on the three-phase current data to obtain the effective value of the first phase current, the effective value of the second phase current and the effective value of the third phase current; a second calculation module, used to calculate the current average value based on the three-phase current data; a third calculation module, used to calculate the three-phase imbalance based on the effective value of each phase current and the current average value.

[0017] Optionally, the third calculation module includes: a first calculation submodule, used to calculate the difference between the effective value of the first phase current and the current average value, to obtain a first difference; a second calculation submodule, used to calculate the difference between the effective value of the second phase current and the current average value, to obtain a second difference; a third calculation submodule, used to calculate the difference between the effective value of the third phase current and the current average value, to obtain a third difference; a first selection submodule, used to select the maximum value among the first difference, the second difference and the third difference; a first acquisition submodule, used to obtain the three-phase imbalance based on the ratio of the maximum value and the current average value.

[0018] Optionally, the calculation unit includes: a first acquisition module, used to acquire the power parameters and load nodes of the power system; a first construction module, used to construct N phase-changing phase sequences as chromosomes of the genetic algorithm based on the power parameters and node loads of the power system; a fourth calculation module, used to calculate the fitness value and the survival probability value of each chromosome; a first iteration module, used to perform iterative calculation based on the fitness value and the survival probability value of each chromosome until the number of iterations reaches a preset iteration number to obtain the target phase-changing phase sequence of each load node; a first generation module, used to generate a three-phase unbalanced adjustment strategy based on the target phase-changing phase sequence of each load node.

[0019] Optionally, the adjustment unit includes: a first adjustment module, used to adjust the control circuits of the target phase and non-target phase corresponding to each load node in the power system in sequence based on the remote control device, thereby adjusting the three-phase imbalance of the power system, wherein the target phase represents the phase to be switched of each load node indicated by the commutation instruction, and the non-target phase represents the phase corresponding to each load node other than the target phase, and the control circuit of the target phase is composed of at least the AC contactor of the target phase and the auxiliary contact of the non-target phase.

[0020] Optionally, the first adjustment module includes: a first control submodule, used to control the closing of the AC contactor corresponding to the target phase of each load node based on the remote control device, and control the opening of the AC contactor corresponding to the non-target phase of each load node; a second control submodule, used to control the opening of the auxiliary contacts corresponding to the target of each load node based on the remote control device, and control the closing of the auxiliary contacts corresponding to the non-target phase of each load node.

[0021] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is further provided, wherein the computer-readable storage medium includes a stored computer program, wherein when the computer program is running, the device where the computer-readable storage medium is located is controlled to execute any one of the above-mentioned three-phase imbalance adjustment methods.

[0022] According to another aspect of an embodiment of the present invention, there is also provided an electronic device, comprising one or more processors and a memory, wherein the memory is used to store one or more programs, wherein when the one or more programs are executed by the one or more processors, the one or more processors implement any one of the above-mentioned three-phase imbalance adjustment methods.

[0023] In the present application, the following steps are performed: first, three-phase current data of the power system is collected, wherein the three-phase current data includes first-phase current data, second-phase current data and third-phase current data; then, the three-phase imbalance is calculated based on the three-phase current data, and the three-phase imbalance is compared with a preset three-phase imbalance threshold to obtain a comparison result; then, when the comparison result indicates that the three-phase imbalance is greater than or equal to the three-phase imbalance threshold, a three-phase imbalance adjustment strategy is obtained based on an iterative calculation of a genetic algorithm; finally, a commutation instruction is generated based on the three-phase imbalance adjustment strategy; based on the commutation instruction, a remote control device is controlled to perform a remote commutation operation to adjust the three-phase imbalance of the power system.

[0024] In the present application, the three-phase current data of the power system is collected based on sensors, and the three-phase imbalance of the power system is calculated. When there is a three-phase imbalance problem in the power system, the optimal adjustment strategy is obtained through iterative calculation through a genetic algorithm, and a phase change instruction is generated according to the adjustment strategy. The phase change operation of the load node in the power system is realized by remote control, thereby adjusting the three-phase imbalance problem, realizing remote control and automation of the three-phase imbalance adjustment, improving the adjustment efficiency, and further solving the technical problem of low adjustment efficiency in the related technology of adjusting the three-phase imbalance problem based on the connection method. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] 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:

[0026] Figure 1 is a flow chart of an optional three-phase imbalance adjustment method according to an embodiment of the present invention;

[0027] Figure 2 is a primary wiring diagram of an optional remote phase-changing system according to an embodiment of the present invention;

[0028] Figure 3 is a secondary wiring diagram of an optional remote phase-changing system according to an embodiment of the present invention;

[0029] Figure 4 is a schematic diagram of an optional three-phase imbalance adjustment process according to an embodiment of the present invention;

[0030] Figure 5 is a schematic diagram of an optional three-phase imbalance adjustment device according to an embodiment of the present invention;

[0031] Figure 6 The hardware structure block diagram of an electronic device (or mobile device) according to a three-phase imbalance adjustment method of an embodiment of the present invention. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0033] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0034] It should be noted that the three-phase imbalance adjustment method and device in the present application can be used in the field of automatic control of power systems. When the three-phase imbalance of power systems is adjusted based on genetic algorithms, it can also be used in any field except the field of automatic control of power systems. When the three-phase imbalance of power systems is adjusted based on genetic algorithms, the application field of the three-phase imbalance adjustment method and device in the present application is not limited.

[0035] It should be noted that the relevant information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are information and data authorized by the user or fully authorized by all parties, and the collection, storage, use, processing, transmission, provision, disclosure and application of the relevant data comply with the relevant laws, regulations and standards of the relevant regions, take necessary confidentiality measures, do not violate public order and good customs, and provide corresponding operation entrances for users to choose to authorize or refuse. For example, an interface is set up between this system and relevant users or organizations. Before obtaining relevant information, it is necessary to send an acquisition request to the aforementioned user or organization through the interface, and obtain relevant information after receiving the consent information fed back by the aforementioned user or organization.

[0036] It should be noted that in this application, when collecting and analyzing customer information, corresponding operation entrances are provided for users to choose to agree or reject the automated decision-making results; if the user chooses to reject, the expert decision-making process will be entered.

[0037] The following embodiments of the present invention can be applied to various three-phase imbalance adjustment systems / applications / devices. The present invention performs iterative calculations based on genetic algorithms, can calculate the optimal phase sequence for phase switching, realize automatic calculation of adjustment strategies, and improve the accuracy of the three-phase imbalance adjustment results. At the same time, the three-phase imbalance is remotely adjusted through a remote phase switching system to improve the adjustment efficiency of the three-phase imbalance problem. The remote phase switching system introduces an AC contactor, and utilizes the characteristics of the AC contactor that can be quickly separated and combined. In the case of no induction of electrical appliances (equivalent to no power outage), a branch line of a single-phase power supply can be quickly transferred to other phases to quickly adjust the three-phase imbalance.

[0038] The present invention is described in detail below in conjunction with various embodiments.

[0039] Embodiment 1

[0040] According to an embodiment of the present invention, an embodiment of a three-phase imbalance adjustment method 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 the 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.

[0041] Figure 1 is a flow chart of an optional three-phase imbalance adjustment method according to an embodiment of the present invention, such as Figure 1 As shown, the method comprises the following steps:

[0042] Step S101, collecting three-phase current data of the power system, wherein the three-phase current data includes first-phase current data, second-phase current data and third-phase current data;

[0043] Step S102, calculating the three-phase imbalance based on the three-phase current data, and comparing the three-phase imbalance with a preset three-phase imbalance threshold to obtain a comparison result;

[0044] Step S103, when the comparison result indicates that the three-phase imbalance is greater than or equal to the three-phase imbalance threshold, a three-phase imbalance adjustment strategy is obtained based on iterative calculation of the genetic algorithm;

[0045] Step S104, generating a commutation instruction based on the three-phase imbalance adjustment strategy, and controlling the remote control device to perform a remote commutation operation based on the commutation instruction to adjust the three-phase imbalance of the power system.

[0046] Through the above steps, firstly, three-phase current data of the power system is collected, wherein the three-phase current data includes first-phase current data, second-phase current data and third-phase current data, then the three-phase imbalance is calculated based on the three-phase current data, and the three-phase imbalance is compared with a preset three-phase imbalance threshold to obtain a comparison result, and then, when the comparison result indicates that the three-phase imbalance is greater than or equal to the three-phase imbalance threshold, a three-phase imbalance adjustment strategy is obtained based on an iterative calculation of a genetic algorithm, and finally a commutation instruction is generated based on the three-phase imbalance adjustment strategy, and a remote control device is controlled to perform a remote commutation operation based on the commutation instruction to adjust the three-phase imbalance of the power system.

[0047] In this embodiment, the three-phase current data of the power system is collected based on sensors, and the three-phase imbalance of the power system is calculated. When there is a three-phase imbalance problem in the power system, the optimal adjustment strategy is obtained through iterative calculation through a genetic algorithm, and a phase change instruction is generated according to the adjustment strategy. The phase change operation of the load node in the power system is implemented by remote control, thereby adjusting the three-phase imbalance problem, realizing remote control and automation of the three-phase imbalance adjustment, improving the adjustment efficiency, and further solving the technical problem of low adjustment efficiency in the related technology of adjusting the three-phase imbalance problem based on the connection method.

[0048] The embodiment of the present invention is described in detail below in combination with the above steps.

[0049] It should be noted that, with the advancement of the construction of new power systems, the distribution network is gradually changing from a power network that simply receives and distributes electric energy to a power network that integrates source, grid, load and storage and is flexibly coupled with the upper power grid. This transformation means that the modern distribution system will be more flexible. Modern power systems generally use three-phase power systems at the high-voltage and medium-voltage transmission and distribution levels. The transmission loss of three-phase electricity is low, and the three-phase power system can provide smoother power output and can transmit high power more efficiently. At the same time, the three-phase power system can also provide better compatibility and flexibility, which is conducive to the integration of new energy. The three-phase power system can easily supply power to three-phase and single-phase loads, providing greater distribution flexibility.

[0050] Step S101, collecting three-phase current data of the power system.

[0051] It should be noted that the phase-changing operation of three-phase unbalance usually refers to the adjustment of the three-phase current or voltage in a three-phase power system to reduce or eliminate the imbalance between the three phases. The three-phase power system consists of three phases. Ideally, the voltage and current of these three phases should be symmetrical, that is, equal in size and 120 degrees apart in phase. However, in practical applications, due to various reasons (such as load imbalance, equipment failure, etc.), the three-phase power system may be unbalanced, that is, the current or voltage of the three phases is not equal. This imbalance can lead to problems such as reduced motor efficiency, shortened equipment life, and energy waste. The three-phase imbalance problem is the most common problem in the three-phase power system. By real-time monitoring and calculation of the current of each phase distribution bus, it is determined whether the power system has a three-phase imbalance. The above-mentioned three-phase current data includes the first phase current data, the second phase current data, and the third phase current data.

[0052] Optionally, the step of collecting three-phase current data of the power system includes: installing a current sensor on a three-phase distribution bus of the power system; based on connecting the current sensor to the distribution bus of each phase, collecting current data from the distribution bus of each phase to obtain three-phase current data.

[0053] It should be noted that for a three-phase power system, the current data on the distribution bus of each phase can be collected to determine the three-phase imbalance. First, a current sensor is installed on each phase distribution bus. The current data on the distribution bus is monitored in real time by the current sensor and archived. When three-phase imbalance adjustment is required, the current data of each phase distribution bus is obtained based on the archived data to obtain the three-phase current data.

[0054] Step S102, calculating the three-phase imbalance based on the three-phase current data, and comparing the three-phase imbalance with a preset three-phase imbalance threshold to obtain a comparison result.

[0055] It should be noted that the three-phase imbalance is calculated based on the effective value and average value of the three-phase current data. The power system will pre-configure a three-phase imbalance threshold. When the three-phase imbalance of the three-phase distribution bus exceeds the three-phase imbalance threshold, it indicates that the imbalance is beyond the tolerable range of the power system and needs to be adjusted.

[0056] Optionally, the step of calculating the three-phase imbalance based on the three-phase current data includes: calculating the effective value of each phase current based on the three-phase current data to obtain the effective value of the first phase current, the effective value of the second phase current and the effective value of the third phase current; calculating the current average value based on the three-phase current data; and calculating the three-phase imbalance based on the effective value of each phase current and the current average value.

[0057] It should be noted that the current data collected from the distribution bus is generally an AC signal. After obtaining the current data, it is necessary to calculate the effective value of each phase current and the current average value based on the current data. The three-phase imbalance is obtained by comprehensive calculation based on the effective value of the current and the current average value.

[0058] Optionally, the step of calculating the three-phase imbalance based on the effective value of each phase current and the current average value includes: calculating the difference between the effective value of the first phase current and the current average value to obtain a first difference; calculating the difference between the effective value of the second phase current and the current average value to obtain a second difference; calculating the difference between the effective value of the third phase current and the current average value to obtain a third difference; selecting the maximum value among the first difference, the second difference and the third difference; and obtaining the three-phase imbalance based on the ratio of the maximum value to the current average value.

[0059] It should be noted that when calculating the three-phase imbalance, first calculate the difference between the effective value of the current and the average current between the distribution buses of each phase, select the maximum difference, and the percentage of the difference between the maximum difference and the average current is the three-phase imbalance of the power system. Specifically, the three-phase imbalance calculation formula is expressed as:

[0060]

[0061] Where ε is the three-phase imbalance of the power system, I A ,I B ,I C Respectively represent the effective value of the current of the three-phase distribution bus; I av It represents the average value of the effective value of the current of the three-phase distribution bus A, B, and C.

[0062] Step S103: when the comparison result indicates that the three-phase imbalance is greater than or equal to the three-phase imbalance threshold, a three-phase imbalance adjustment strategy is obtained based on iterative calculation of the genetic algorithm.

[0063] It should be noted that after calculating the three-phase imbalance of the power system, the three-phase imbalance is compared with the preset three-phase imbalance threshold. If the monitored three-phase imbalance is greater than or equal to the preset three-phase imbalance, it indicates that the imbalance between the three-phase distribution buses of the power system is relatively serious and needs to be adjusted as soon as possible to avoid low power generation efficiency and safety problems.

[0064] Optionally, the steps of obtaining a three-phase unbalanced adjustment strategy based on iterative calculation of a genetic algorithm include: obtaining power parameters and load nodes of the power system; constructing N phase-changing phase sequences as chromosomes of the genetic algorithm based on the power parameters of the power system and the node loads; calculating the fitness value and survival probability value of each chromosome; performing iterative calculation based on the fitness value and survival probability value of each chromosome until the number of iterations reaches a preset iteration number to obtain a target phase-changing phase sequence for each load node; and generating a three-phase unbalanced adjustment strategy based on the target phase-changing phase sequence for each load node.

[0065] It should be noted that the embodiment of the present invention performs iterative calculation based on the genetic algorithm to select the optimal phase switching strategy. The three-phase imbalance of the power system may be caused by load imbalance. Switching the phases of the load nodes in the power system can solve the problem of three-phase imbalance. The steps of performing iterative calculation based on the genetic algorithm to obtain the three-phase imbalance adjustment strategy specifically include:

[0066] Step 1: Set the objective function f(x) = minε.

[0067] Step 2: By modifying the fixed crossover operator and mutation operator of the standard genetic algorithm into dynamic adjustment parameters, the improved crossover and mutation operators are obtained as follows:

[0068]

[0069] Where P m and P c are the improved crossover and mutation operators respectively; p mmax and p cmax are the maximum values ​​of crossover probability and mutation probability respectively; fmax and f avg are the maximum and average fitness values ​​of the population respectively; f 2 is the one with the larger fitness value among the two individuals in the crossover operation; f' 2 is the individual fitness value for the mutation operation; μ and v are constants in (0,1).

[0070] Step three, read the power parameters, load nodes and other information in the power system, set the population size and evolutionary generation, crossover operator and mutation operator of the genetic algorithm.

[0071] Step 4: Initialize the population and randomly generate N chromosomes by rounding uniform random numbers (in this embodiment, the commutation sequence of the load nodes in the power system is selected as the chromosome);

[0072] Step 5, solving the chromosome fitness in the population. The fitness function is used to determine the quality of the chromosome during the search process. The fitness function of this embodiment is:

[0073]

[0074] Where f(x) is the objective function; c max is the maximum estimate of the objective function.

[0075] Step 6: Select an operation, calculate the survival probability of each chromosome, and select a better chromosome to construct the chromosome of the new population by comparing the fitness. The survival probability calculation formula is:

[0076]

[0077] Step seven, crossover and mutation, recombines the genes on the chromosomes through crossover or mutation to obtain new chromosomes, compares them with the original parent chromosomes, and selects chromosomes with higher fitness to enter the next generation population.

[0078] Step eight, repeat steps six and seven until the optimal evolutionary number is reached, at which point the system load reaches the optimal balance, and then the optimal commutation sequence of each load node is obtained, thereby constructing a three-phase unbalanced adjustment strategy based on the optimal commutation sequence.

[0079] Step S104, generating a commutation instruction based on the three-phase imbalance adjustment strategy, and controlling the remote control device to perform a remote commutation operation based on the commutation instruction to adjust the three-phase imbalance of the power system.

[0080] It should be noted that the embodiment of the present invention performs automated remote phase switching through a remote phase switching system, thereby adjusting the three-phase imbalance of the power system.

[0081] Optionally, the step of controlling a remote control device to perform remote phase switching operations based on a phase switching instruction to adjust the three-phase imbalance of the power system includes: adjusting the control circuits of the target phase and the non-target phase corresponding to each load node in the power system in turn based on the remote control device, thereby adjusting the three-phase imbalance of the power system, wherein the target phase represents the phase to be switched of each load node indicated by the phase switching instruction, the non-target phase represents the phase other than the target phase corresponding to each load node, and the control circuit of the target phase is composed of at least the AC contactor of the target phase and the auxiliary contact of the non-target phase.

[0082] It should be noted that the remote commutation system in the embodiment of the present invention automatically generates commutation instructions through the three-phase unbalance adjustment strategy. The remote control device controls the AC contactors of each phase based on the commutation instructions, performs commutation operations on the single-phase load in the power system, and realizes three-phase load balance. Figure 2 is a primary wiring diagram of an optional remote phase-changing system according to an embodiment of the present invention, such as Figure 2 As shown in the figure, the remote phase-changing system includes a remote control device, a three-phase four-wire switch and three AC contactors. A three-phase four-wire switch is installed at the incoming end of the system (to facilitate future maintenance and reduce the scope of power outage during line maintenance), and three-phase four-wires are introduced and led out respectively. Among them, Ua, Ub, and Uc are three-phase distribution buses, N is the neutral line, and three AC contactors are installed on the outgoing side of the three-phase four-wire switch (such as Figure 2 Each phase output line of the switch is connected to an AC contactor input line terminal, and the normally open and normally closed auxiliary contacts of the AC contactor are used to control the opening and closing of the secondary circuit to ensure that the three AC contactor main circuits can only be "three-in-one". The output terminals of the three AC contactors are connected in parallel and connected to the phase line of the single-phase branch line, and multiple single-phase loads are connected in parallel; each channel of the remote control device is connected in series with a phase secondary control circuit to remotely control the switching of the single-phase branch line.

[0083] The embodiment of the present invention utilizes the fast separation and combination characteristics of the AC contactor, and can quickly transfer a branch line of a single-phase power supply to other phases without induction of electrical appliances (equivalent to no power outage), thereby realizing remote automatic and rapid adjustment of the three-phase imbalance of the power system.

[0084] Optionally, the steps of adjusting the control circuits of the target phase and the non-target phase corresponding to each load node in the power system in sequence based on the remote control device include: controlling the AC contactor corresponding to the target phase of each load node to close, and controlling the AC contactor corresponding to the non-target phase of each load node to open based on the remote control device; controlling the auxiliary contacts corresponding to the target of each load node to open, and controlling the auxiliary contacts corresponding to the non-target phase of each load node to close based on the remote control device.

[0085] It should be noted that in the above-mentioned remote phase-changing system, each phase output line of the switch is connected to an input line terminal of an AC contactor, and two auxiliary contacts are arranged between the switch and the AC contactor. The coil of the AC contactor of each phase is connected in series with the normally closed auxiliary contacts of the other two-phase AC contactors and a normally open contact in the remote control device, thereby forming a control loop. The loop is controlled by opening and closing the AC contactor and the auxiliary contacts to ensure that only one phase of the circuit is open, thereby performing phase change on the single-phase load.

[0086] Figure 3 is a secondary wiring diagram of an optional remote phase-changing system according to an embodiment of the present invention, such as Figure 3 As shown, in the A, B, and C phase control circuits, the AC contactor of each phase ( Figure 3 The coils of the other two-phase AC contactors are connected in series with the normally closed auxiliary contacts ( Figure 3 KMa, KMb and KMc are used as the illustration) and a normally open contact in the remote control device ( Figure 3 When the AC contactor of one phase (such as phase A) is closed, its normally closed auxiliary contact is disconnected, so that the secondary control circuit for closing the other two phases (phase B and phase C) is open, and the other two phases (phase B and phase C) cannot be closed, ensuring that only one phase of the three phases A, B, and C is connected to the single-phase branch line, thereby realizing the phase change operation.

[0087] Another optional specific implementation is described in detail below.

[0088] Figure 4 is a schematic diagram of an optional three-phase imbalance adjustment process according to an embodiment of the present invention, such as Figure 4 As shown in the figure, the adjustment process of three-phase imbalance includes:

[0089] Step 1, start;

[0090] Step 2: collecting three-phase current data of the power distribution bus of the power system;

[0091] Step 3, calculating the three-phase imbalance of the power system;

[0092] Step 4: determine whether phase switching is required, if yes, execute step 5, if no, execute step 2;

[0093] Step 5, calculating the optimal commutation phase sequence;

[0094] Step six, remote control commutation;

[0095] Step seven, end.

[0096] In the embodiment of the present invention, iterative calculation is performed based on a genetic algorithm to calculate the optimal phase sequence for commutation, realize automatic calculation of the adjustment strategy, and improve the accuracy of the three-phase imbalance adjustment result. At the same time, the three-phase imbalance is remotely adjusted through a remote commutation system to improve the adjustment efficiency of the three-phase imbalance problem. The remote commutation system introduces an AC contactor, and utilizes the AC contactor's ability to quickly separate and close. In the case of no induction of electrical appliances (equivalent to no power outage), a branch line of a single-phase power supply can be quickly transferred to other phases to quickly adjust the three-phase imbalance.

[0097] The following is a detailed description in conjunction with another embodiment.

[0098] Embodiment 2

[0099] A three-phase imbalance adjustment device provided in this embodiment includes multiple implementation units, each implementation unit corresponds to each implementation step in the above-mentioned embodiment 1. Its specific implementation method and beneficial effects can refer to the above-mentioned method embodiment and will not be repeated here.

[0100] Figure 5 is a schematic diagram of an optional three-phase unbalance adjustment device according to an embodiment of the present invention, such as Figure 2 As shown, the three-phase imbalance adjustment device may include: a collection unit 51, a comparison unit 52, a calculation unit 53, and an adjustment unit 54, wherein:

[0101] The collecting unit 51 is used to collect three-phase current data of the power system, wherein the three-phase current data includes first-phase current data, second-phase current data and third-phase current data;

[0102] A comparison unit 52, configured to calculate the three-phase imbalance based on the three-phase current data, and compare the three-phase imbalance with a preset three-phase imbalance threshold to obtain a comparison result;

[0103] A calculation unit 53, configured to obtain a three-phase imbalance adjustment strategy based on iterative calculation of a genetic algorithm when the comparison result indicates that the three-phase imbalance is greater than or equal to a three-phase imbalance threshold;

[0104] The adjustment unit 54 is used to generate a commutation instruction based on the three-phase imbalance adjustment strategy, and control the remote control device to perform remote commutation operation based on the commutation instruction to adjust the three-phase imbalance of the power system.

[0105] The above-mentioned three-phase imbalance adjustment device collects three-phase current data of the power system through the collection unit 51, wherein the three-phase current data includes first-phase current data, second-phase current data and third-phase current data; calculates the three-phase imbalance based on the three-phase current data through the comparison unit 52, and compares the three-phase imbalance with a preset three-phase imbalance threshold to obtain a comparison result; obtains a three-phase imbalance adjustment strategy based on iterative calculation based on a genetic algorithm when the comparison result indicates that the three-phase imbalance is greater than or equal to the three-phase imbalance threshold through the calculation unit 53; generates a commutation instruction based on the three-phase imbalance adjustment strategy through the adjustment unit 54, controls the remote control device to perform remote commutation operation based on the commutation instruction, and adjusts the three-phase imbalance of the power system.

[0106] In this embodiment, the three-phase current data of the power system is collected based on sensors, and the three-phase imbalance of the power system is calculated. When there is a three-phase imbalance problem in the power system, the optimal adjustment strategy is obtained through iterative calculation through a genetic algorithm, and a phase change instruction is generated according to the adjustment strategy. The phase change operation of the load node in the power system is implemented by remote control, thereby adjusting the three-phase imbalance problem, realizing remote control and automation of the three-phase imbalance adjustment, improving the adjustment efficiency, and further solving the technical problem of low adjustment efficiency in the related technology of adjusting the three-phase imbalance problem based on the connection method.

[0107] Optionally, the collection unit 51 includes: a first installation module, used to install a current sensor on the three-phase distribution bus of the power system; a first collection module, used to collect current data from the distribution bus of each phase based on the connection of the current sensor to the distribution bus of each phase to obtain three-phase current data.

[0108] Optionally, the comparison unit 52 includes: a first calculation module, used to calculate the effective value of each phase current based on the three-phase current data to obtain the effective value of the first phase current, the effective value of the second phase current and the effective value of the third phase current; a second calculation module, used to calculate the current average value based on the three-phase current data; a third calculation module, used to calculate the three-phase imbalance based on the effective value of each phase current and the current average value.

[0109] Optionally, the third calculation module includes: a first calculation submodule, used to calculate the difference between the effective value of the first phase current and the current average value, to obtain a first difference; a second calculation submodule, used to calculate the difference between the effective value of the second phase current and the current average value, to obtain a second difference; a third calculation submodule, used to calculate the difference between the effective value of the third phase current and the current average value, to obtain a third difference; a first selection submodule, used to select the maximum value among the first difference, the second difference and the third difference; and a first acquisition submodule, used to obtain the three-phase imbalance based on the ratio of the maximum value to the current average value.

[0110] Optionally, the calculation unit 53 includes: a first acquisition module, used to acquire the power parameters and load nodes of the power system; a first construction module, used to construct N phase-changing phase sequences as chromosomes of the genetic algorithm based on the power parameters and node loads of the power system; a fourth calculation module, used to calculate the fitness value and survival probability value of each chromosome; a first iteration module, used to perform iterative calculation based on the fitness value and survival probability value of each chromosome until the number of iterations reaches a preset iteration algebra to obtain the target phase-changing phase sequence of each load node; a first generation module, used to generate a three-phase unbalanced adjustment strategy based on the target phase-changing phase sequence of each load node.

[0111] Optionally, the adjustment unit 54 includes: a first adjustment module, which is used to adjust the control circuits of the target phase and the non-target phase corresponding to each load node in the power system in sequence based on the remote control device, so as to adjust the three-phase imbalance of the power system, wherein the target phase represents the phase to be switched of each load node indicated by the commutation instruction, and the non-target phase represents the phase other than the target phase corresponding to each load node, and the control circuit of the target phase is composed of at least the AC contactor of the target phase and the auxiliary contact of the non-target phase.

[0112] Optionally, the first adjustment module includes: a first control submodule, which is used to control the closing of the AC contactor corresponding to the target phase of each load node based on the remote control device, and control the opening of the AC contactor corresponding to the non-target phase of each load node; and a second control submodule, which is used to control the opening of the auxiliary contacts corresponding to the target of each load node based on the remote control device, and control the closing of the auxiliary contacts corresponding to the non-target phase of each load node.

[0113] The above-mentioned three-phase imbalance adjustment device may also include a processor and a memory. The above-mentioned acquisition unit 51, comparison unit 52, calculation unit 53, adjustment unit 54, etc. are all stored in the memory as program units, and the processor executes the above-mentioned program units stored in the memory to realize corresponding functions.

[0114] The processor includes a kernel, which retrieves the corresponding program unit from the memory. One or more kernels can be set, and the three-phase imbalance of the power system can be remotely adjusted by adjusting the kernel parameters.

[0115] The above-mentioned memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash memory (fl ash RAM), and the memory includes at least one storage chip.

[0116] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is further provided, the computer-readable storage medium including a stored computer program, wherein when the computer program is running, the device where the computer-readable storage medium is located is controlled to execute any one of the above-mentioned three-phase imbalance adjustment methods.

[0117] According to another aspect of an embodiment of the present invention, there is also provided an electronic device, comprising one or more processors and a memory, wherein the memory is used to store one or more programs, wherein when the one or more programs are executed by one or more processors, the one or more processors implement any one of the above-mentioned three-phase imbalance adjustment methods.

[0118] According to another aspect of an embodiment of the present invention, a computer program product is further provided. The computer program product includes a computer program, wherein when the computer program is executed by a processor, any one of the above three-phase imbalance adjustment methods is implemented.

[0119] The present application also provides a computer program product, which, when executed on a data processing device, is suitable for executing a program that is initialized with the following method steps: collecting three-phase current data of an electric power system, wherein the three-phase current data includes first-phase current data, second-phase current data and third-phase current data; calculating the three-phase imbalance based on the three-phase current data, and comparing the three-phase imbalance with a preset three-phase imbalance threshold to obtain a comparison result; when the comparison result indicates that the three-phase imbalance is greater than or equal to the three-phase imbalance threshold, obtaining a three-phase imbalance adjustment strategy based on iterative calculation of a genetic algorithm; generating a commutation instruction based on the three-phase imbalance adjustment strategy, and controlling a remote control device to perform a remote commutation operation based on the commutation instruction to adjust the three-phase imbalance of the electric power system.

[0120] The present application also provides a computer program product, which, when executed on a data processing device, is also suitable for executing a program that initializes the following method steps: the steps of collecting three-phase current data of the power system include: installing a current sensor on the three-phase distribution bus of the power system; based on the current sensor being connected to the distribution bus of each phase, collecting current data from the distribution bus of each phase to obtain three-phase current data.

[0121] The present application also provides a computer program product, which, when executed on a data processing device, is also suitable for executing a program that is initialized with the following method steps: the step of calculating the three-phase imbalance based on the three-phase current data includes: calculating the effective value of each phase current based on the three-phase current data to obtain the effective value of the first phase current, the effective value of the second phase current and the effective value of the third phase current; calculating the current average value based on the three-phase current data; calculating the three-phase imbalance based on the effective value of each phase current and the current average value.

[0122] The present application also provides a computer program product, which, when executed on a data processing device, is also suitable for executing a program that is initialized with the following method steps: the step of calculating the three-phase imbalance based on the effective value of each phase current and the current average value includes: calculating the difference between the effective value of the first phase current and the current average value to obtain a first difference; calculating the difference between the effective value of the second phase current and the current average value to obtain a second difference; calculating the difference between the effective value of the third phase current and the current average value to obtain a third difference; selecting the maximum value among the first difference, the second difference and the third difference; and obtaining the three-phase imbalance based on the ratio of the maximum value to the current average value.

[0123] The present application also provides a computer program product, which, when executed on a data processing device, is also suitable for executing a program that initializes the following method steps: the steps of obtaining a three-phase unbalanced adjustment strategy based on iterative calculation of a genetic algorithm include: obtaining power parameters and load nodes of the power system; constructing N phase-changing phase sequences as chromosomes of the genetic algorithm based on the power parameters and node loads of the power system; calculating the fitness value and survival probability value of each chromosome; performing iterative calculation based on the fitness value and survival probability value of each chromosome until the number of iterations reaches a preset iteration number, and obtaining a target phase-changing phase sequence for each load node; generating a three-phase unbalanced adjustment strategy based on the target phase-changing phase sequence of each load node.

[0124] The present application also provides a computer program product, which, when executed on a data processing device, is also suitable for executing a program that initializes the following method steps: controlling a remote control device to perform remote phase switching operations based on a phase switching instruction, and the step of adjusting the three-phase imbalance of the power system includes: adjusting the control circuits of the target phase and non-target phase corresponding to each load node in the power system in turn based on the remote control device, thereby adjusting the three-phase imbalance of the power system, wherein the target phase represents the phase to be switched of each load node indicated by the phase switching instruction, and the non-target phase represents the phase corresponding to each load node other than the target phase, and the control circuit of the target phase is composed of at least the AC contactor of the target phase and the auxiliary contact of the non-target phase.

[0125] The present application also provides a computer program product, which, when executed on a data processing device, is also suitable for executing a program that initializes the following method steps: the steps of adjusting the control circuits of the target phase and the non-target phase corresponding to each load node in the power system in sequence based on a remote control device include: controlling the AC contactor corresponding to the target phase of each load node to close based on the remote control device, and controlling the AC contactor corresponding to the non-target phase of each load node to open; controlling the auxiliary contacts corresponding to the target of each load node to open based on the remote control device, and controlling the auxiliary contacts corresponding to the non-target phase of each load node to close.

[0126] Figure 61 is a hardware structure block diagram of an electronic device (or mobile device) according to a three-phase unbalance adjustment method of an embodiment of the present invention. Figure 6 As shown, the electronic device may include one or more ( Figure 6 602a, 602b, ..., 602n are used to illustrate) processor 602 (processor 602 may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA), and memory 604 for storing data. In addition, it may also include: a display, an input / output interface (I / O interface), a universal serial bus (USB) port (which may be included as one of the ports of the I / O interface), a network interface, a keyboard, a power supply and / or a camera. It can be understood by those skilled in the art that Figure 6 The structure shown is only for illustration and does not limit the structure of the above electronic device. Figure 6 More or fewer components as shown, or with Figure 6 Different configurations are shown.

[0127] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0128] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0129] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0130] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0131] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0132] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.

[0133] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for adjusting three-phase imbalance, characterized in that: include: Collecting three-phase current data of the power system, wherein the three-phase current data includes first-phase current data, second-phase current data and third-phase current data; Calculating a three-phase imbalance based on the three-phase current data, and comparing the three-phase imbalance with a preset three-phase imbalance threshold to obtain a comparison result; When the comparison result indicates that the three-phase imbalance is greater than or equal to the three-phase imbalance threshold, obtaining a three-phase imbalance adjustment strategy based on iterative calculation of a genetic algorithm; A commutation instruction is generated based on the three-phase imbalance adjustment strategy, and a remote control device is controlled to perform a remote commutation operation based on the commutation instruction to adjust the three-phase imbalance of the power system.

2. The adjustment method according to claim 1, characterized in that: The steps for collecting three-phase current data of the power system include: Installing a current sensor on a three-phase distribution busbar of the power system; Based on the connection between the current sensor and the distribution busbar of each phase, current data is collected from the distribution busbar of each phase to obtain three-phase current data.

3. The adjustment method according to claim 1, characterized in that: The step of calculating the three-phase unbalance degree based on the three-phase current data comprises: Calculate the effective value of each phase current based on the three-phase current data to obtain the effective value of the first phase current, the effective value of the second phase current and the effective value of the third phase current; Calculate the current average value based on the three-phase current data; The three-phase imbalance is calculated based on the effective value of each phase current and the current average value.

4. The adjustment method according to claim 3, characterized in that: The step of calculating the three-phase imbalance based on the effective value of each phase current and the current average value comprises: Calculating a difference between the effective value of the first phase current and the current average value to obtain a first difference; Calculating the difference between the effective value of the second-phase current and the current average value to obtain a second difference; Calculating the difference between the effective value of the third phase current and the current average value to obtain a third difference; Selecting the maximum value among the first difference, the second difference and the third difference; The three-phase unbalance degree is obtained based on a ratio of the maximum value to the current average value.

5. The adjustment method according to claim 1, characterized in that: The steps of obtaining the three-phase unbalance adjustment strategy based on the iterative calculation of the genetic algorithm include: Acquiring power parameters and load nodes of the power system; Constructing N commutation phase sequences as chromosomes of a genetic algorithm based on power parameters and node loads of the power system; Calculate the fitness value and survival probability value of each chromosome; Iterative calculation is performed based on the fitness value and the survival probability value of each chromosome until the number of iterations reaches a preset iteration number, thereby obtaining a target commutation sequence of each load node; A three-phase unbalance adjustment strategy is generated based on the target commutation phase sequence of each load node.

6. The adjustment method according to claim 1, characterized in that: The steps of controlling the remote control device to perform remote commutation operation based on the commutation instruction to adjust the three-phase imbalance of the power system include: Based on the remote control device, the control circuits of the target phase and the non-target phase corresponding to each load node in the power system are adjusted in turn, so as to adjust the three-phase imbalance of the power system, wherein the target phase represents the phase to be switched of each load node indicated by the commutation instruction, and the non-target phase represents the phase other than the target phase corresponding to each load node, and the control circuit of the target phase is composed of at least the AC contactor of the target phase and the auxiliary contact of the non-target phase.

7. The adjustment method according to claim 6, characterized in that: The step of sequentially adjusting the control loops of the target phase and the non-target phase corresponding to each load node in the power system based on the remote control device comprises: Based on the remote control device, the AC contactor corresponding to the target phase of each load node is controlled to be closed, and the AC contactor corresponding to the non-target phase of each load node is controlled to be opened; Based on the remote control device, the auxiliary contacts corresponding to the target phases of each load node are controlled to be opened, and the auxiliary contacts corresponding to the non-target phases of each load node are controlled to be closed.

8. A three-phase unbalance adjustment device, characterized in that: include: A collection unit, used for collecting three-phase current data of the power system, wherein the three-phase current data includes first-phase current data, second-phase current data and third-phase current data; A comparison unit, configured to calculate a three-phase imbalance degree based on the three-phase current data, and compare the three-phase imbalance degree with a preset three-phase imbalance degree threshold value to obtain a comparison result; a calculation unit, configured to obtain a three-phase imbalance adjustment strategy by iterative calculation based on a genetic algorithm when the comparison result indicates that the three-phase imbalance is greater than or equal to the three-phase imbalance threshold; The adjustment unit is used to generate a commutation instruction based on the three-phase imbalance adjustment strategy, and control a remote control device to perform a remote commutation operation based on the commutation instruction to adjust the three-phase imbalance of the power system.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored computer program, wherein when the computer program is executed, the device where the computer-readable storage medium is located is controlled to execute the three-phase imbalance adjustment method according to any one of claims 1 to 7.

10. An electronic device, characterized in that: It includes one or more processors and a memory, wherein the memory is used to store one or more programs, wherein when the one or more programs are executed by the one or more processors, the one or more processors implement the three-phase imbalance adjustment method described in any one of claims 1 to 7.

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