A power distribution control method, apparatus, and medium

By dividing the power distribution line into sections and adjusting the transformer taps and compensation capacitors, the problems of high voltage and reactive current circulation caused by new energy distributed power sources and power electronic technology loads were solved, thus improving the overall energy efficiency of the power distribution line.

CN115528738BActive Publication Date: 2025-11-21INNOVATION & INNOVATION CENT OF STATE GRID ZHEJIANG ELECTRIC POWER CO LTD
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Patent Information

Application Number
CN202211347040.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-10-31
Publication Date
2025-11-21
Estimated Expiration
2042-10-31

AI Technical Summary

Technical Problem

In existing power distribution lines, distributed power sources from new energy sources and loads based on power electronics technology cause problems such as localized high voltage and reactive power circulation, which affect power distribution efficiency. Moreover, existing technologies mainly address these issues by increasing voltage levels, which has limited effectiveness.

Method used

The power distribution lines are divided into sections according to a preset principle. By obtaining the power values ​​of each section, the transformer taps and compensation capacitors are adjusted to optimize line energy efficiency and reduce the impact of new energy distributed power sources and power electronic technology loads.

Benefits of technology

It has achieved an improvement in the overall energy efficiency of power distribution lines without introducing new equipment, reduced local voltage spikes and reactive power circulation, and improved power distribution efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application relates to the technical field of power electronics, and discloses a power distribution control method, a device and a medium, wherein a power distribution line is divided into section lines according to a preset distribution principle; power values of the section lines are obtained; and corresponding transformer taps and compensation capacitors are adjusted according to the power values of the section lines, so that the overall energy efficiency of the power distribution line and the load is improved. In the prior art, due to the increasing proportion of new energy distributed power sources and loads based on power electronics technology in the power distribution line, the local voltage is too high, and the reactive power circulation problem occurs. By dividing the power distribution line into multiple section lines and adjusting the section lines according to the power values, the section management of the power distribution line is realized, the corresponding transformer taps and compensation capacitors are adjusted, the existing power distribution network is effectively utilized, the power distribution efficiency of the line is improved, and the influence of the load is reduced.
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Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power electronics, and particularly relates to a power distribution control method and device and medium. BACKGROUND

[0002] With the acceleration of electricity use of all industries in the whole society, the demand for coal as the main energy source is increasing dramatically. The problem of climate change caused by the decrease of coal resource reserves and large carbon emissions makes people think about how to further improve the electricity use efficiency. The current low electricity use efficiency leads to a serious shortage of power supply, which reduces the actual economic benefits of power distribution. Therefore, under the background of a conservation-oriented society, it is necessary to further promote energy-saving technologies to improve energy utilization and reduce energy consumption.

[0003] In the current technology, the main means to improve the efficiency of the power distribution line is to increase the voltage level of the line and reduce reactive power transmission. However, with the increasing proportion of new energy distributed power and loads based on power electronics in the power distribution line, a series of problems such as local high voltage and reactive power circulation are caused.

[0004] Therefore, it is an urgent problem for those skilled in the art to effectively utilize the existing power distribution network, improve the efficiency of the line under the premise of not reducing the reliability of the power system, and reduce the impact of new energy distributed power and loads based on power electronics. SUMMARY

[0005] The purpose of the present application is to provide a power distribution control method, device and medium for improving the efficiency of the line and reducing the impact of new energy distributed power and loads based on power electronics.

[0006] To solve the above technical problems, the present application provides a power distribution control method, comprising:

[0007] Dividing the power distribution line into each section line according to a preset distribution principle;

[0008] Obtaining the power value of each section line;

[0009] Adjusting the corresponding transformer tap and compensation capacitor according to the power value of each section line to improve the overall energy efficiency of the power distribution line and the load.

[0010] Preferably, the obtaining of the power value of each section line comprises:

[0011] Obtaining the network loss value of each section line at a target time and calculating the total network loss of the power distribution line;

[0012] Confirming the power value when the total network loss is minimum according to the target function;

[0013] Correspondingly, the adjusting transformer taps and compensation capacitors according to the power values of each section line is: adjusting the transformer taps and compensation capacitors according to the power values when the total network loss minimum value, to improve the overall energy efficiency of the distribution line and the load.

[0014] Preferably, the power values of each section line include:

[0015] The invalid power values of the load on each section line at the target time are obtained, and the total invalid power value of all loads is calculated;

[0016] The total invalid power value of all loads is confirmed according to the objective function;

[0017] Correspondingly, the adjusting transformer taps and compensation capacitors according to the power values of each section line is: adjusting the transformer taps and compensation capacitors according to the total invalid power value of all loads minimum value, to improve the overall energy efficiency of the distribution line and the load.

[0018] Preferably, the power values of each section line include:

[0019] The network loss values of each section line at the target time are obtained, and the total network loss of the distribution line is calculated;

[0020] The invalid power values of the load on each section line at the target time are obtained, and the total invalid power value of all loads is calculated;

[0021] The power values when the overall energy efficiency of the distribution line and the load is the highest are confirmed according to the objective function, the total network loss of the distribution line and the total invalid power value of all loads,

[0022] Correspondingly, the adjusting transformer taps and compensation capacitors according to the power values of each section line is: adjusting the transformer taps and compensation capacitors according to the power values when the overall energy efficiency of the distribution line and the load is the highest.

[0023] Preferably, the objective function is:

[0024] The constraint condition is that the active power and the reactive power of the distribution line remain balanced, and the total network loss minimum value min[P W (t)] is obtained;

[0025] Wherein, P W (t) is the total network loss of the distribution line at t time, m is the number of section lines, P Wi (t) is the network loss value of i section line at t time.

[0026] Preferably, the loads include full-controlled loads, semi-controlled loads, and power factor correction loads.

[0027] The objective function is:

[0028] The constraint condition is that the total number of full-controlled loads, semi-controlled loads, and power factor correction loads is equal to the total number of nodes, and the load power is the rated load power, so as to obtain the minimum value min[P L (t)] of the total invalid power value.

[0029] x is the number of full-controlled loads, y is the number of semi-controlled loads, z is the number of power factor correction loads, U L (j, t) is the voltage of the load at time t, U ref1 is the rated voltage of the full-controlled load, U ref2 is the rated voltage of the semi-controlled load, and U ref3 is the rated voltage of the power factor correction load.

[0030] Preferably, the loads include full-controlled loads, semi-controlled loads, and power factor correction loads.

[0031] The objective function is:

[0032] min[aP W (t)+bP L (t)], and the constraint condition is that the active power and the reactive power of the distribution line are balanced; the total number of full-controlled loads, semi-controlled loads, and power factor correction loads is equal to the total number of nodes, and the load power is the rated load power.

[0033]

[0034]

[0035] wherein, P W (t) is the total network loss of the distribution line at time t, m is the number of section lines, P Wi (t) is the network loss value of the i section line at time t, x is the number of full-controlled loads, y is the number of semi-controlled loads, z is the number of power factor correction loads, U L (j, t) is the voltage of the load at time t, U ref1 is the rated voltage of the full-controlled load, U ref2 is the rated voltage of the semi-controlled load, and U ref3 is the rated voltage of the power factor correction load, a is the coefficient when the minimum value min[P W (t)] of the total network loss is obtained, and b is the coefficient when the minimum value min[P L (t) of the total invalid power value is obtained.

[0036] To solve the above technical problems, the application further provides a power distribution control device, comprising:

[0037] a distribution module, configured to divide the power distribution line into section lines according to a preset distribution principle;

[0038] an acquisition module, configured to acquire power values of the section lines;

[0039] an adjustment module, configured to adjust the corresponding transformer tap and compensation capacitor according to the power values of the section lines, so as to improve the overall energy efficiency of the power distribution line and the load.

[0040] To solve the above technical problems, the application further provides another power distribution control device, comprising a memory, configured to store a computer program;

[0041] a processor, configured to execute the computer program to realize the steps of the power distribution control method as described above.

[0042] To solve the above technical problems, the application further provides a computer readable storage medium, wherein the computer readable storage medium stores a computer program, and the computer program is executed by a processor to realize the steps of the power distribution control method as described above.

[0043] The power distribution control method provided by the application comprises the following steps: dividing the power distribution line into section lines according to a preset distribution principle; acquiring power values of the section lines; and adjusting the corresponding transformer tap and compensation capacitor according to the power values of the section lines, so as to improve the overall energy efficiency of the power distribution line and the load. In the prior art, due to the increasing proportion of new energy distributed power supply and loads based on power electronic technology in the power distribution line, the local voltage is too high, and there is a problem of reactive current circulation. By dividing the power distribution line into multiple section lines and adjusting according to the power values of the section lines, the power distribution line is managed in sections, and the corresponding transformer tap and compensation capacitor are adjusted, so that the existing power distribution network is effectively utilized, new control equipment does not need to be introduced, the power distribution efficiency of the line is improved, and the influence of new energy distributed power supply and loads based on power electronic technology is reduced.

[0044] In addition, the power distribution control device and the medium provided by the application correspond to the power distribution control method as described above, and have the same effects. BRIEF DESCRIPTION OF DRAWINGS

[0045] In order to more clearly illustrate the embodiments of the application, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0046] Figure 1 A flow chart of a power distribution control method provided for an embodiment of the present application;

[0047] Figure 2 A structural diagram of a power distribution control device provided for an embodiment of the present application;

[0048] Figure 3 A structural diagram of another power distribution control device provided for an embodiment of the present application. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0050] The core of the present application is to provide a power distribution control method, device and medium, for improving the power distribution efficiency of a line and reducing the influence of new energy distributed power supply and loads based on power electronic technology.

[0051] In order for those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0052] Figure 1 A flow chart of a power distribution control method provided for an embodiment of the present application is shown in Figure 1 The method comprises the following steps.

[0053] S10: dividing the power distribution line into each section line according to a preset distribution principle;

[0054] S11: obtaining the power value of each section line;

[0055] S12: adjusting the corresponding transformer tap and compensation capacitor according to the power value of each section line, so as to improve the overall energy efficiency of the power distribution line and the load.

[0056] With the acceleration of electricity consumption of all industries in the whole society, the demand for coal as the main energy source has increased dramatically. The problem of climate change caused by the decrease of coal resource reserves year by year and large carbon emissions makes people think about how to further improve the electricity consumption efficiency. The current situation of insufficient power supply caused by low electricity consumption efficiency is still serious, which reduces the actual economic benefit of power distribution. Therefore, under the background of a conservation-oriented society, it is necessary to improve energy utilization and reduce energy consumption, and further promote energy-saving technology.

[0057] The proportion of power electronic equipment in the current load is increasing, including distributed photovoltaic, electric vehicle charging piles and the like. These devices have self-control capability and are quite different from traditional load devices, especially reactive power, which may even cause circulating current. In the current technology, the main means to improve the efficiency of the distribution line is to increase the voltage level of the line and reduce the transmission of reactive power, but as the proportion of new energy distributed power sources and loads based on power electronic technology in the distribution line is increasing, it has caused a series of problems such as local voltage being too high and reactive circulating current.

[0058] The embodiment proposes a distribution control method, which divides the distribution line into each section line according to a preset distribution principle, and adjusts the corresponding transformer tap and compensation capacitor according to the power value of each section line through sectional precise regulation and control, so as to improve the overall energy efficiency of the distribution line and the load.

[0059] The distribution control method provided by the application comprises the following steps: dividing the distribution line into each section line according to a preset distribution principle; obtaining the power value of each section line; adjusting the corresponding transformer tap and compensation capacitor according to the power value of each section line, so as to improve the overall energy efficiency of the distribution line and the load. Compared with the current technology, as the proportion of new energy distributed power sources and loads based on power electronic technology in the distribution line is increasing, it has caused a series of problems such as local voltage being too high and reactive circulating current. By dividing the distribution line into multiple section lines and adjusting according to the power value of each section line, the sectional management of the distribution line is realized, and the existing distribution network is effectively utilized by adjusting the corresponding transformer tap and compensation capacitor, without introducing new control equipment, improving the distribution efficiency of the line, and reducing the influence of new energy distributed power sources and loads based on power electronic technology.

[0060] The application optimizes the distribution method from two aspects: on the one hand, the network loss is close to the minimum, and on the other hand, the efficiency of the equipment is close to the highest. Considering both aspects, the overall energy efficiency of the distribution line and the load is finally the highest. Specifically, the network loss and the invalid power of the equipment are taken as the objective functions respectively, and the minimum values are obtained under the constraint conditions. Then, the two are considered comprehensively, so that the overall energy efficiency of the line and the load is the highest.

[0061] When only considering the minimum value of the network loss, the power value of each section line is obtained, comprising:

[0062] Obtaining the network loss value of each section line at the target time and calculating the total network loss of the distribution line;

[0063] Confirming the power value when the total network loss is the minimum value according to the objective function;

[0064] Correspondingly, according to the power value of each section line, the transformer tap and the compensation capacitor are adjusted as follows: the transformer tap and the compensation capacitor are adjusted according to the power value when the total network loss minimum value is obtained, so as to improve the overall energy efficiency of the distribution line and the load.

[0065] The objective function is as follows:

[0066] The constraint condition is that the active power and the reactive power of the distribution line are balanced, and the total network loss minimum value min[P W (t)] is obtained.

[0067] P W (t) is the total network loss of the distribution line at time t, m is the number of section lines, P Wi (t) is the network loss value of the i section line at time t.

[0068] In a specific implementation, the distribution line is divided into m sections to realize sectional precise regulation and control, and a control point is taken every 15 minutes (or 5 minutes) within 24 hours of a day, a total of 96 (or 288) points, so that the network loss satisfies min[P W (t)].

[0069] Considering that the total network loss is the sum of the network losses of the m section lines, the objective function is constructed as follows: In the formula, t=1, 2, …, r (r=96 or 288 / day)

[0070] At this time, the comprehensive reactive power transmission on the line is kept close to the minimum value, and the network loss is minimum. Here, unlike the traditional load, the voltage value is not high, but the reactive power characteristics of the load are utilized to make the network loss circulating on the whole line minimum.

[0071] Only considering the minimum value of the invalid power of the load, the power value of each section line is obtained, including:

[0072] The invalid power value of the load on each section line at the target time is obtained, and the total invalid power value of all loads is calculated;

[0073] The total invalid power value minimum value of all loads is confirmed according to the objective function;

[0074] Correspondingly, according to the power value of each section line, the transformer tap and the compensation capacitor are adjusted as follows: the transformer tap and the compensation capacitor are adjusted according to the power value when the total network loss minimum value is obtained, so as to improve the overall energy efficiency of the distribution line and the load.

[0075] In a specific implementation, the active power generated by the distributed power supply and the power electronic driven load device is regarded as constant, and according to the difference in the active power generated or absorbed, such load is mainly divided into three types of full control type, half control type and power factor correction type, and the port voltage thereof should be controlled in different ranges. For the full control type, the port voltage should be lower than the rated voltage U ref1 of the full control type, so as to make the load generate more reactive power; for the half control type, the port voltage should be higher than the rated voltage U ref2 of the half control type, so as to make the load absorb part of the reactive power; for the power factor correction type, the port voltage should be equal to the rated voltage U ref3 . Through flexible control, the invalid power of the device satisfies min[P L (t)]. At this time, the port voltage of each load is in the range close to the optimum, the invalid power of the device is minimum, and the efficiency is highest.

[0076] Suppose that the loads in the distribution network include: full control type load, half control type load, power factor correction type load;

[0077] The objective function is:

[0078] The constraint condition is that the total number of full control type load, half control type load and power factor correction type load is the total number of nodes, and the load power is the rated load power, so as to obtain the minimum value min[P L (t)] of the total invalid power;

[0079] x is the number of full control type loads, y is the number of half control type loads, z is the number of power factor correction type loads, U L (j, t) is the voltage of the load at t, U ref1 is the rated voltage of the full control type load, U ref2 is the rated voltage of the half control type load, and U ref3 is the rated voltage of the power factor correction type load.

[0080] At this time, the total invalid power of the device is minimum, that is, min[P L (t)] is achieved. Overall, the closer to the end, the more reactive power is expected to be generated by the load device, and the voltage deviation is not the most important control target.

[0081] Considering the above two aspects of the target, a comprehensive overall optimization target can be formed, that is, making the line and load overall energy efficiency highest, obtaining the power value of each section line, including:

[0082] obtaining the network loss value of each section line at the target time and calculating the total network loss of the distribution line;

[0083] acquire invalid power values of each section line at the target moment and calculate total invalid power values of all loads;

[0084] confirm power values of the distribution line and the load when the overall energy efficiency of the distribution line and the load is the highest according to the target function, total network loss of the distribution line and total invalid power values of all loads,

[0085] correspondingly, adjust the corresponding transformer tap and compensation capacitor according to the power values of each section line: adjust the transformer tap and compensation capacitor according to the power values of the distribution line and the load when the overall energy efficiency of the distribution line and the load is the highest.

[0086] The load includes full-control type load, half-control type load and power factor correction type load.

[0087] The target function is:

[0088] min[aP W (t)+bP L (t)], the constraint condition is that the active power and the reactive power of the distribution line remain balanced; the total number of the full-control type load, the half-control type load and the power factor correction type load is the total number of nodes, and the load power is the rated load power.

[0089]

[0090]

[0091] wherein, P W (t) is total network loss of the distribution line at t moment, m is the number of section lines, P Wi (t) is network loss value of i section line at t moment, x is the number of full-control type loads, y is the number of half-control type loads, z is the number of power factor correction type loads, U L (j, t) is voltage of the load at t moment, U ref1 is rated voltage of the full-control type load, U ref2 is rated voltage of the half-control type load, U ref3 is rated voltage of the power factor correction type load, a is a coefficient when the total network loss minimum value min[P W (t)] is minimum, and b is a coefficient when the total invalid power value minimum value min[P L (t)] is minimum.

[0092] In the above embodiment, the power distribution control method is described in detail, and the application also provides a corresponding embodiment of a power distribution control device. It should be noted that the embodiment of the device part is described from two angles, one is based on the function module angle, and the other is based on the hardware angle.

[0093] Figure 2A structural diagram of a power distribution control device provided by an embodiment of the present application is shown in FIG. 1, which includes: Figure 2

[0094] A distribution module 10 is configured to divide the power distribution line into each section line according to a preset distribution principle.

[0095] An acquisition module 11 is configured to acquire the power value of each section line.

[0096] An adjustment module 12 is configured to adjust the corresponding transformer tap and compensation capacitor according to the power value of each section line, so as to improve the overall energy efficiency of the power distribution line and the load.

[0097] Since the embodiments of the device part correspond to the embodiments of the method part, the embodiments of the device part are described in the description of the embodiments of the method part, which will not be described here.

[0098] The power distribution control device provided by the present application divides the power distribution line into each section line according to a preset distribution principle, acquires the power value of each section line, and adjusts the corresponding transformer tap and compensation capacitor according to the power value of each section line, so as to improve the overall energy efficiency of the power distribution line and the load. In the current technology, due to the increasing proportion of new energy distributed power supply and load based on power electronic technology in the power distribution line, the local voltage is too high, and the reactive current is circulating. By dividing the power distribution line into multiple section lines and adjusting according to the power value of each section line, the present technical solution realizes the segmented management of the power distribution line, and adjusts the corresponding transformer tap and compensation capacitor, effectively utilizes the existing power distribution network, does not need to introduce new control equipment, improves the power distribution efficiency of the line, and reduces the influence of new energy distributed power supply and load based on power electronic technology.

[0099] Figure 3 A structural diagram of another power distribution control device provided by an embodiment of the present application is shown in FIG. 2, which includes: Figure 3

[0100] A processor 21 is configured to implement the steps of the power distribution control method of the above embodiment when executing the computer program.

[0101] The power distribution control device provided by the present embodiment can include but is not limited to a smart phone, a tablet computer, a notebook computer, or a desktop computer, etc.

[0102] ​​The processor 21 may include one or more processing cores, such as a quad-core processor or an octa-core processor. The processor 21 may be implemented using at least one of the following hardware forms: Digital Signal Processor (DSP), Field-Programmable Gate Array (FPGA), or Programmable Logic Array (PLA). The processor 21 may also include a main processor and a coprocessor. The main processor, also known as the Central Processing Unit (CPU), is used to process data in the wake-up state; the coprocessor is a low-power processor used to process data in the standby state. In some embodiments, the processor 21 may integrate a Graphics Processing Unit (GPU), which is responsible for rendering and drawing the content to be displayed on the screen. In some embodiments, the processor 21 may also include an Artificial Intelligence (AI) processor, which is used to handle computational operations related to machine learning.

[0103] The memory 20 may include one or more computer-readable storage media, which may be non-transitory. The memory 20 may also include high-speed random access memory and non-volatile memory, such as one or more disk storage devices or flash memory devices. In this embodiment, the memory 20 is used to store at least the following computer program 201, which, after being loaded and executed by the processor 21, is capable of implementing the relevant steps of the power distribution control method disclosed in any of the foregoing embodiments. In addition, the resources stored in the memory 20 may also include an operating system 202 and data 203, and the storage method may be temporary or permanent storage. The operating system 202 may include Windows, Unix, Linux, etc. The data 203 may include, but is not limited to, power values.

[0104] In some embodiments, the power distribution control device may further include a display screen 22, an input / output interface 23, a communication interface 24, a power supply 25, and a communication bus 26.

[0105] Those skilled in the art will understand that Figure 3 The structure shown does not constitute a limitation on the power distribution control device and may include more or fewer components than shown.

[0106] The power distribution control device provided in the embodiments of the present application comprises a memory and a processor, and the processor can realize the following method when executing the program stored in the memory: dividing the power distribution line into each section line according to a preset distribution principle; obtaining the power value of each section line; and adjusting the corresponding transformer tap and compensation capacitor according to the power value of each section line, so as to improve the overall energy efficiency of the power distribution line and the load.

[0107] The power distribution control device provided in the present application divides the power distribution line into each section line according to a preset distribution principle; obtains the power value of each section line; and adjusts the corresponding transformer tap and compensation capacitor according to the power value of each section line, so as to improve the overall energy efficiency of the power distribution line and the load. In the current technology, due to the increasing proportion of new energy distributed power supply and load based on power electronic technology in the power distribution line, the local voltage is too high and the reactive current is circulating. By dividing the power distribution line into multiple section lines and adjusting according to the power value of each section line, the present technical solution realizes the sectional management of the power distribution line, and adjusts the corresponding transformer tap and compensation capacitor, effectively utilizes the existing power distribution network, does not need to introduce new control equipment, improves the power distribution efficiency of the line, and reduces the influence of new energy distributed power supply and load based on power electronic technology.

[0108] Finally, the present application also provides an embodiment corresponding to a computer readable storage medium. The computer readable storage medium stores a computer program, and the computer program is executed by a processor to realize the steps recorded in the above method embodiments.

[0109] It can be understood that if the method in the above embodiments is realized in the form of a software function 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 solutions of the present application essentially or the part that contributes to the prior art or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, and executes all or part of the steps of the methods described in the embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a magnetic disk or an optical disk, and various media that can store program codes.

[0110] The computer readable storage medium provided in the application divides the power distribution circuit into each section circuit according to a preset distribution principle; obtains the power value of each section circuit; adjusts the corresponding transformer tap and compensation capacitor according to the power value of each section circuit, so as to improve the overall energy efficiency of the power distribution circuit and the load. In the prior art, due to the increasing proportion of new energy distributed power supply and load based on power electronic technology in the power distribution circuit, the local voltage is too high and the reactive current is circulating. By dividing the power distribution circuit into multiple section circuits and adjusting according to the power value of each section circuit, the sectional management of the power distribution circuit is realized, the corresponding transformer tap and compensation capacitor are adjusted, the existing power distribution network is effectively utilized, new control equipment is not needed, the power distribution efficiency of the line is improved, and the influence of the new energy distributed power supply and the load based on the power electronic technology is reduced.

[0111] The power distribution control method, device and medium provided in the application are described in detail above. The embodiments in the specification are described in a progressive manner, and each embodiment mainly describes the differences from other embodiments. The same or similar parts of each embodiment can be referred to. For the device disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple, and the related parts can be referred to the method part. It should be pointed out that, for ordinary skilled in the art, without departing from the principles of the application, some improvements and modifications can be made to the application, and these improvements and modifications also fall within the protection scope of the claims of the application.

[0112] It should be further noted that, in the specification, the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitation, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or device including the element.

Claims

1. A power distribution control method, characterized in that, include: The power distribution lines are divided into sections according to the preset allocation principle; Obtain the power values ​​of each section of the line; Adjust the corresponding transformer taps and compensation capacitors according to the power values ​​of each section of the line to improve the overall energy efficiency of the distribution lines and loads; The process of obtaining the power values ​​of each of the aforementioned line segments includes: Obtain the network loss value of each section of the line at the target time and calculate the total network loss of the distribution line; Obtain the invalid power value of the load on each section of the line at the target time and calculate the total invalid power value of all loads; Based on the objective function, the total network loss of the distribution line, and the total ineffective power of all loads, determine the power value at which the overall energy efficiency of the distribution line and load is maximized. Correspondingly, the adjustment of the corresponding transformer taps and compensation capacitors according to the power value of each section of the line is as follows: the transformer taps and compensation capacitors are adjusted according to the power value when the overall energy efficiency of the distribution line and the load is at its highest. The loads include: fully controlled loads, semi-controlled loads, and power factor correction loads; The objective function is: The constraints are that the active and reactive power of the distribution line are kept in balance; the total number of fully controlled loads, semi-controlled loads, and power factor correction loads is equal to the total number of nodes, and the load power is equal to the rated load power. ; ; in, for Total network loss of power distribution lines at all times The number of sections of the line. for time Network loss value of the section line, For the number of fully controlled loads, For the number of semi-controlled loads, The number of power factor corrective loads. For load in Voltage at time, The rated voltage for a fully controlled load. The rated voltage for a semi-controlled load. The rated voltage of the power factor correction load. Minimum total network loss The coefficient at time, Minimum total ineffective power value The coefficient at that time.

2. A power distribution control device, characterized in that, include: The distribution module is used to divide the power distribution lines into different sections according to a preset distribution principle. The acquisition module is used to acquire the network loss value of each section of the line at the target time and calculate the total network loss of the distribution line; Obtain the invalid power value of the load on each section of the line at the target time and calculate the total invalid power value of all loads; Based on the objective function, the total network loss of the distribution line, and the total ineffective power value of all loads, the power value at which the overall energy efficiency of the distribution line and the load is at its highest is determined. Correspondingly, the adjustment of the corresponding transformer tap and compensation capacitor based on the power value of each section of the line is as follows: Adjust the transformer tap and compensation capacitor based on the power value at which the overall energy efficiency of the distribution line and the load is at its highest. The adjustment module is used to adjust the corresponding transformer taps and compensation capacitors according to the power values ​​of each section of the line, so as to improve the overall energy efficiency of the distribution lines and loads; wherein, the loads include: fully controlled loads, semi-controlled loads, and power factor correction loads; the objective function is: The constraints are that the active and reactive power of the distribution line are kept in balance; the total number of fully controlled loads, semi-controlled loads, and power factor correction loads is equal to the total number of nodes, and the load power is equal to the rated load power. ; ; in, for Total network loss of power distribution lines at all times The number of sections of the line. for time Network loss value of the section line, For the number of fully controlled loads, For the number of semi-controlled loads, The number of power factor corrective loads. For load in Voltage at time, The rated voltage for a fully controlled load. The rated voltage for a semi-controlled load. The rated voltage of the power factor correction load. Minimum total network loss The coefficient at time, Minimum total ineffective power value The coefficient at that time.

3. A power distribution control device, characterized in that, Includes memory used to store computer programs; A processor is configured to implement the steps of the power distribution control method as described in claim 1 when executing the computer program.

4. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of the power distribution control method as described in claim 1.

Citation Information

Patent Citations

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