CN117277334A

CN117277334A - Voltage control method, device, computer equipment and storage medium

Info

Publication number: CN117277334A
Application number: CN202311296266.0A
Authority: CN
Inventors: 曾顺奇; 徐艳; 黄维家
Original assignee: Guangzhou Power Supply Bureau of Guangdong Power Grid Co Ltd
Current assignee: Guangzhou Power Supply Bureau of Guangdong Power Grid Co Ltd
Priority date: 2023-10-09
Filing date: 2023-10-09
Publication date: 2023-12-22

Abstract

The application relates to a voltage control method, a voltage control device, a computer device and a storage medium. The method comprises the following steps: performing main network adjustment based on transfer monitoring information, a preset transfer bus threshold value and a preset adjustment strategy to obtain a first transfer bus; carrying out main distribution network adjustment according to the first transfer bus, the back-supply voltage, a preset bus threshold value and a preset adjustment strategy to obtain a first back-supply bus; monitoring a first transfer supply bus and a first back supply bus to obtain a first transfer supply voltage and a first back supply voltage, and obtaining a first transfer supply voltage and a first back supply voltage; comparing the first reverse supply voltage with a preset bus threshold value according to the first reverse supply voltage, and obtaining an adjustment comparison result; and when the adjustment comparison result is that the first switching power supply voltage or the first back power supply voltage is not in the threshold range, repeating the main power distribution network adjustment operation until the adjusted switching power supply voltage and the adjusted back power supply voltage are both in the threshold range and ending the adjustment operation. The method can realize the optimization of power distribution network power conversion scheduling.

Description

Voltage control method, device, computer equipment and storage medium

Technical Field

The present disclosure relates to the field of power supply technologies, and in particular, to a voltage control method, a voltage control device, a computer device, and a storage medium.

Background

Busbar back-supply (Busbar Reverse Supply) is a power system fault. It refers to a voltage on a bus (also called a feeder) in an electrical power system in a direction opposite to the normal power supply direction, resulting in the flow of electrical energy from the load side to the power supply side. This situation may be caused by a failure of a power source (e.g., a generator or transformer) in the power system. The reverse supply of the bus may have serious influence on the normal operation of the power system, such as damage to equipment, current overload, unstable voltage, etc. Therefore, when the busbar is found to be inverted, measures need to be taken in time to solve the problem so as to ensure the safe operation of the power system.

And the bus inverted supply application scene is the condition of the total station scheduled maintenance of the main network. Under the condition of total station maintenance of the transformer substation, the 10kV buses in the transformer substation are required to be converted into power through a distribution network and a feeder line, and the power is converted into power to be supplied by the 10kV buses of other transformer substations.

In the prior art, taking the reverse supply of a 10kV bus as an example, a connection switch (SW 1) of a second bus F3 (third feeder) and a first bus is closed, a low-voltage switch (SW 2) of the second bus transformer station is disconnected, and then the 10kV bus of the second bus transformer station is reversely supplied by the first bus F3 (third feeder). The voltage at the end of the multi-feedback lines of the I bus and the II bus is lower.

However, in the new mode, the capacitors of the 10kV buses of the I and II substations are on the same small network. Because I female F3 (third feeder) supplies II female F4 (fourth feeder), F5 (fifth feeder), F6 (sixth feeder) and so on load, the voltage is often lower, but the capacitor regulation mileage (4 MVar/group) in II female transformer substation is larger, and the voltage is higher when the capacitor of II female transformer substation is put into. And the load changes day and night, so that the voltage level is difficult to reasonably adjust.

Disclosure of Invention

In view of the foregoing, it is desirable to provide a voltage control method, apparatus, computer device, computer readable storage medium, and computer program product that can coordinate with voltage regulation to achieve optimal scheduling of power distribution network power conversion.

In a first aspect, the present application provides a voltage control method, including:

carrying out main network adjustment based on transfer monitoring information of a transfer bus, a preset transfer bus threshold value and a preset adjustment strategy to obtain a first transfer bus;

performing main distribution network adjustment according to the inverted supply voltage of the inverted supply bus after the first inverted supply bus and the main network are adjusted, a preset bus threshold value and a preset adjustment strategy to obtain a first inverted supply bus;

Monitoring a first transfer supply bus and a first back supply bus to obtain a first transfer supply voltage and a first back supply voltage, and obtaining a first transfer supply voltage and a first back supply voltage;

comparing the first reverse supply voltage with a preset bus threshold value according to the first reverse supply voltage, and obtaining an adjustment comparison result;

and when the adjustment comparison result is that the first switching power supply voltage or the first back power supply voltage is not in the threshold range, repeating the main power distribution network adjustment operation until the adjusted switching power supply voltage and the adjusted back power supply voltage are both in the threshold range and ending the adjustment operation.

In one embodiment, main network adjustment is performed based on transfer monitoring information of a transfer bus, a preset transfer bus threshold value and a preset adjustment strategy, so as to obtain a first transfer bus, including:

screening a preset main network regulation strategy according to the transfer voltage and the transfer voltage threshold value to obtain a first type of main network regulation strategy;

screening the first type of main network regulation strategies according to the transfer reactive power and the transfer reactive power threshold value to obtain a first main network regulation strategy;

and regulating the transfer bus according to a main network regulation strategy to obtain a first transfer bus.

In one embodiment, the main distribution network adjustment is performed according to the inverted supply voltage of the inverted supply bus after the first inverted supply bus and the main network adjustment, a preset bus threshold value and a preset adjustment strategy, so as to obtain a first inverted supply bus, including:

Screening a preset distribution network regulation strategy according to the reverse supply voltage and the reverse supply voltage threshold value to obtain a first distribution network regulation strategy;

and adjusting the inverted supply bus based on the first distribution network adjusting strategy to obtain a first inverted supply bus.

In one embodiment, when the adjustment comparison result is that the first supply voltage is not within the threshold range, repeating the main distribution network adjustment operation until the adjusted supply voltage and the adjusted supply voltage are both within the threshold range and the adjustment operation is ended, including:

when the first transfer supply voltage exceeds a transfer supply voltage threshold value, screening a preset main network regulation strategy based on the first transfer supply voltage to obtain a second main network regulation strategy;

adjusting the first transfer bus according to a second main network adjusting strategy to obtain a second transfer bus;

after the second transfer bus is obtained, collecting a second back supply voltage of the first back supply bus and a second transfer voltage of the second transfer bus;

when the voltage of the second back-off bus in the second back-off voltage is within a back-off voltage threshold, monitoring a feeder line connected with the first back-off bus to obtain each feeder line voltage of the back-off bus;

comparing each feeder voltage of the first inverted supply bus with a preset feeder voltage threshold value to obtain a feeder comparison result;

When the feeder line comparison result is that the voltage of each feeder line of the first inverted supply bus is lower than a preset feeder line voltage threshold value, adjusting each feeder line based on a preset feeder line adjusting strategy to obtain an adjusted feeder line;

when the second reverse power supply voltage is within the reverse power supply voltage threshold value and the second transfer power supply voltage is lower than the transfer power supply voltage threshold value, screening a preset distribution network regulation strategy according to the second transfer power supply voltage and the second reverse power supply voltage to obtain a second distribution network regulation strategy;

and adjusting the second transfer bus based on a second distribution network adjusting strategy to obtain a third transfer bus.

In one embodiment, before performing main network adjustment based on the transfer monitoring information of the transfer bus, the preset transfer bus threshold value and the preset adjustment policy, and obtaining the first transfer bus, the method further includes:

monitoring all buses in the transformer substation to obtain switching information;

analyzing the bus based on the switch opening and closing information and preset back supply identification conditions to obtain a back supply bus;

after the identification is completed, the monitoring condition of the reverse supply bus is set, and the related data of the main network and the distribution network are input.

Setting an operation threshold of a bus; wherein the operating threshold includes an upper voltage limit, a lower voltage limit, an upper reactive power limit, and a lower reactive power limit;

the gear of the transformer is regulated, and a first active maximum variation and a first voltage maximum variation of single-gear voltage regulation are obtained;

carrying out switching operation of the capacitor on the bus to obtain a second reactive maximum variation and a second voltage maximum variation of switching a group of capacitors;

determining a main network adjusting area diagram according to an operation threshold, a reactive maximum variation, a first voltage maximum variation, a second reactive maximum variation and a second voltage maximum variation;

and performing strategy setting on each region in the main network regulation region graph to obtain a preset main network regulation strategy.

determining a distribution network adjusting area diagram according to a transfer power supply voltage threshold value of a transfer bus and a reverse power supply voltage threshold value of a reverse bus;

and performing strategy setting on each region in the distribution network regulation region graph to obtain a preset distribution network regulation strategy.

In a second aspect, the present application further provides a voltage control apparatus, including:

In a third aspect, the present application also provides a computer device comprising a memory and a processor, the memory storing a computer program, the processor implementing the following steps when executing the computer program:

In a fourth aspect, the present application also provides a computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of:

In a fifth aspect, the present application also provides a computer program product comprising a computer program which, when executed by a processor, performs the steps of:

The voltage control method, the device, the computer equipment, the storage medium and the computer program product are used for identifying and determining the back-supply bus and the transfer bus for all buses in the transformer substation, determining an executable main network adjustment strategy according to the voltage and reactive power of the transfer bus, adjusting the transfer bus based on the main network adjustment strategy, monitoring the back-supply bus to obtain the back-supply voltage, determining an executable distribution network adjustment strategy based on the back-supply voltage, adjusting the back-supply bus according to the determined distribution network adjustment strategy, monitoring the adjusted transfer bus and the back-supply bus to obtain the adjusted transfer voltage and the adjusted back-supply voltage, and judging whether to finish adjustment or not based on the adjusted transfer voltage and the adjusted back-supply voltage; if the regulation is still needed, then a proper scheme is selected from a main network regulation strategy, a distribution network regulation strategy and a feeder line regulation strategy by combining the feeder line voltage connected with the power supply bus until the monitored voltages of the transfer bus and the reverse supply bus are in a reasonable range, the voltage can be regulated through the mutual cooperation of the two substations, the regulation means of the reverse supply path is unified, and the optimization of the transfer power dispatching of the power distribution network is realized by utilizing a main-distribution cooperative voltage regulation mode.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the related art, the drawings that are required to be used in the embodiments or the related technical descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for a person having ordinary skill in the art.

FIG. 1 is a flow chart of a voltage control method according to an embodiment;

FIG. 2 is a flow chart illustrating a primary distribution network adjustment procedure in one embodiment;

FIG. 3 is a diagram of a main network adjustment area in one embodiment;

FIG. 4 is a diagram of an area of distribution network adjustment in one embodiment;

FIG. 5 is a block diagram of a voltage control apparatus in one embodiment;

fig. 6 is an internal structural diagram of a computer device in one embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

In one embodiment, as shown in fig. 1, a voltage control method is provided, where the method is applied to a terminal to illustrate, it is understood that the method may also be applied to a server, and may also be applied to a system including the terminal and the server, and implemented through interaction between the terminal and the server. In this embodiment, the method includes the steps of:

step 102, main network adjustment is performed based on transfer monitoring information of a transfer bus, a preset transfer bus threshold value and a preset adjustment strategy, and a first transfer bus is obtained.

The transfer bus is a power supply bus of the first section, transfer monitoring information comprises transfer voltage and transfer reactive power of the transfer bus, a preset regulation strategy comprises a preset main network regulation strategy, a preset transfer bus threshold comprises a transfer voltage threshold and a preset transfer reactive power threshold, the transfer voltage threshold comprises a transfer voltage lower limit, and the preset transfer reactive power threshold comprises a preset transfer reactive power lower limit and a preset transfer reactive power upper limit.

In the case of a busbar reverse supply, the switching voltage of the switching busbar is lower than the switching voltage lower limit, and the switching reactive power exceeds the preset switching reactive power upper limit due to the overload of the dedicated busbar. And selecting a proper regulation strategy from preset main network regulation strategies based on the transfer voltage and the transfer reactive power, regulating the transfer bus according to the selected regulation strategy, and then obtaining a first transfer bus.

For example, the main network monitors that the voltage of the transfer bus is low and the total reactive load of the transfer bus is large at this time, and capacitors are put into the transfer bus based on the selected regulation strategy.

And 104, performing main distribution network adjustment according to the inverted supply voltage of the inverted supply bus after the first inverted supply bus and the main network adjustment, a preset bus threshold value and a preset adjustment strategy to obtain a first inverted supply bus.

The preset bus threshold comprises a reverse power supply voltage threshold, and the reverse power supply voltage threshold comprises a reverse power supply upper limit and a reverse power supply lower limit.

Illustratively, if the reverse voltage of the reverse supply bus is low, it indicates that the reverse supply feeder voltage of the feeder to which the reverse supply bus is connected is low. After the first back-supplying bus is obtained, collecting that the voltage of the first back-supplying bus is in a normal range, selecting a proper regulating strategy from preset distribution network regulating strategies according to the back-supplying bus voltage, regulating the back-supplying bus based on the proper regulating strategy, and then obtaining the first back-supplying bus.

And step 106, monitoring the first transfer supply bus and the first back supply bus to obtain a first transfer supply voltage and a first back supply voltage, and obtaining the first transfer supply voltage and the first back supply voltage.

Illustratively, after the first back supply bus is obtained, the voltage of the first back supply bus and the voltage of the first transfer bus are collected to obtain a first back supply voltage and a first transfer voltage.

And step 108, comparing the first reverse supply voltage with a preset bus threshold value according to the first reverse supply voltage, and obtaining an adjustment comparison result.

The back-off voltage comprises back-off bus voltage and back-off feeder voltage.

Illustratively, after the bus monitoring after the adjustment is completed, whether the first switching voltage and the first inverting voltage are within a normal range is analyzed, that is, the adjustment price comparison result is obtained.

The adjustment comparison result comprises:

the first switching supply voltage and the first inverting supply voltage are both in a normal range;

the first transfer supply voltage and the first back supply bus voltage are in a normal range, and the back supply feeder voltage of each feeder line connected with the first back supply bus is abnormal.

The first reverse supply voltage is in a normal range, and the first rotational supply voltage is lower than the rotational supply voltage lower limit.

And 110, repeating the main distribution network adjusting operation when the adjusting comparison result is that the first switching supply voltage or the first back-off supply voltage is not in the threshold range, until the adjusted switching supply voltage and the adjusted back-off supply voltage are both in the threshold range, and ending the adjusting operation.

After the busbar adjustment is completed, the first inverted supply busbar voltage is in a normal range, the inverted supply feeder voltage of each feeder line connected with the first inverted supply busbar and the first inverted supply busbar needs to be analyzed in sequence, and then the adjustment is performed by combining with a preset main network adjustment strategy or a preset feeder line adjustment strategy until the first inverted supply voltage and the first inverted supply voltage are in the normal range.

In the voltage control method, the reverse supply bus is identified and determined and the transfer bus is determined for all buses in the transformer substation, then an executable main network adjusting strategy is determined according to the voltage and reactive power of the transfer bus, the transfer bus is adjusted based on the main network adjusting strategy, then the reverse supply bus is monitored to obtain the reverse supply voltage, the executable distribution network adjusting strategy is determined based on the reverse supply voltage, the reverse supply bus is adjusted according to the determined distribution network adjusting strategy, the adjusted transfer bus and the adjusted reverse supply bus are monitored to obtain the adjusted transfer voltage and the adjusted reverse supply voltage, and whether the adjustment is finished is judged based on the adjusted transfer voltage and the adjusted reverse supply voltage; if the regulation is still needed, then a proper scheme is selected from a main network regulation strategy, a distribution network regulation strategy and a feeder line regulation strategy by combining the feeder line voltage connected with the power supply bus until the monitored voltages of the transfer bus and the reverse supply bus are in a reasonable range, the voltage can be regulated through the mutual cooperation of the two substations, the regulation means of the reverse supply path is unified, and the optimization of the transfer power dispatching of the power distribution network is realized by utilizing a main-distribution cooperative voltage regulation mode.

In an exemplary embodiment, main network adjustment is performed based on transfer monitoring information of a transfer bus, a preset transfer bus threshold value and a preset adjustment strategy, and a first transfer bus is obtained, wherein:

screening a preset main network regulation strategy according to the transfer voltage and the transfer voltage threshold value to obtain a first type of main network regulation strategy; screening the first type of main network regulation strategies according to the transfer reactive power and the transfer reactive power threshold value to obtain a first main network regulation strategy; and regulating the transfer bus according to a main network regulation strategy to obtain a first transfer bus.

The preset bus threshold comprises a transfer voltage threshold, the transfer voltage threshold comprises a transfer upper voltage limit and a transfer lower voltage limit, and the transfer reactive power threshold comprises a transfer reactive power upper limit and a transfer reactive power lower limit.

For example, after determining the transfer bus, it is indicated that the transfer voltage of the transfer bus is lower than the transfer voltage lower limit, and then an adjustment policy applicable to the transfer voltage lower than the transfer voltage lower limit, that is, a first type of main network adjustment policy, needs to be screened out from the preset main network adjustment policies.

Likewise, after determining the transfer bus, it is indicated that the load of the transfer bus is too large, that is, that the transfer reactive power exceeds the upper limit of the transfer reactive power, and then an adjustment strategy applicable to the transfer reactive power exceeding the upper limit of the transfer reactive power, that is, the first main network adjustment strategy, needs to be selected from the first main network adjustment strategies.

After the first main network regulation strategy is determined by using the transfer voltage and the transfer reactive power, the first main network regulation strategy is executed on the transfer bus, and then the first transfer bus is obtained.

In this embodiment, a first main network adjustment policy is selected based on the transfer voltage and the transfer reactive power, and the transfer bus is adjusted according to the first main network adjustment policy to obtain a first transfer bus, so that the reactive power of the first transfer bus obtained by adjustment is reduced to be within a normal range, and the voltage of the first transfer bus is increased to be within the normal range, so that the difficulty in analyzing the subsequent transfer bus is reduced, and optimization of power distribution network transfer scheduling is facilitated.

In an exemplary embodiment, the main distribution network adjustment is performed according to a first reverse supply bus, a reverse supply voltage of a reverse supply bus after the main network adjustment, a preset bus threshold value, and a preset adjustment policy, to obtain a first reverse supply bus, including:

screening a preset distribution network regulation strategy according to the reverse supply voltage and the reverse supply voltage threshold value to obtain a first distribution network regulation strategy; and adjusting the inverted supply bus based on the first distribution network adjusting strategy to obtain a first inverted supply bus.

The preset regulation strategy comprises a preset main network regulation strategy and a preset distribution network regulation strategy, and the preset bus threshold comprises an inverted voltage threshold.

Illustratively, after the first supply bus is adjusted, the back-off voltage of the back-off bus is obtained by monitoring. And comparing the inverted supply voltage with an inverted supply voltage threshold value, and screening a proper regulation strategy in a preset distribution network regulation strategy, namely a first distribution network regulation strategy, according to a comparison result. And then, executing a first distribution network regulation strategy on the inverted supply bus to obtain a first inverted supply bus.

For example, the distribution network monitors the voltage of the back-off bus as being low, at which time capacitors are put into the back-off bus based on the selected regulation strategy.

In this embodiment, after the adjustment of the power conversion bus is completed, only the corresponding situation of the power conversion bus needs to be considered, that is, the comparison result of the power conversion voltage of the power conversion bus and the power conversion voltage threshold is considered, and based on the comparison result, an appropriate distribution network adjustment strategy can be determined, so that optimization of power distribution network power conversion scheduling is improved based on the appropriate distribution network adjustment strategy.

In an exemplary embodiment, as shown in fig. 2, when the adjustment comparison result is that the first supply voltage is not within the threshold range, the main distribution network adjustment operation is repeated until the adjusted supply voltage and the adjusted supply voltage are both within the threshold range and the adjustment operation is ended, where:

Step 202, when the first supply voltage exceeds the supply voltage threshold, screening the preset main network adjustment strategy based on the first supply voltage to obtain a second main network adjustment strategy.

For example, when the first supply voltage exceeds the supply voltage threshold, a suitable regulation strategy, i.e. a second main regulation strategy, is selected among the preset main regulation strategies.

And step 204, adjusting the first transfer bus according to a second main network adjusting strategy to obtain a second transfer bus.

The second main network regulation strategy is executed on the first transfer bus, and the second transfer bus is obtained.

For example, if a previously selected adjustment strategy is to put a capacitor into the transfer bus, then the previously put capacitor needs to be cut out.

Step 206, collecting a second back supply voltage of the first back supply bus and a second transfer voltage of the second transfer bus after the second transfer bus is obtained.

After the adjustment of the switching busbar is completed, the second switching busbar and the first switching busbar are monitored again, and a second switching voltage are obtained.

And step 208, monitoring the feeder line connected with the first back-off bus when the voltage of the second back-off bus in the second back-off voltage is within the back-off voltage threshold value, and obtaining the voltages of the feeder lines of the back-off bus.

The back-off voltage comprises a back-off bus voltage and a back-off feeder voltage, and the back-off voltage threshold comprises a back-off bus voltage threshold and a back-off feeder voltage threshold.

In an exemplary embodiment, when the voltage of the second back-off bus in the second back-off voltage is within the back-off voltage threshold, each feeder line connected to the first back-off bus needs to be monitored, so as to obtain each feeder line voltage of the back-off bus.

Step 210, comparing each feeder voltage of the first inverted supply bus with a preset feeder voltage threshold value to obtain a feeder comparison result.

The feeder voltage of each feeder connected to the first inverted supply bus is compared with a preset feeder voltage threshold value respectively, so that a comparison result of each feeder is obtained.

Step 212, when the feeder comparison result is that the voltage of each feeder of the first inverted supply bus is lower than the preset feeder voltage threshold, adjusting each feeder based on a preset feeder adjustment strategy to obtain an adjusted feeder.

In an exemplary embodiment, when the feeder comparison result is that each feeder voltage of the first inverted supply bus is lower than a preset feeder voltage threshold, a feeder adjustment strategy is obtained. And then, a feeder line adjusting strategy is executed on the first inverted supply bus to obtain an adjusted feeder line, and the feeder line voltage of the adjusted feeder line is in a normal range at the moment. The feeder adjustment strategy includes:

1) And monitoring feeder lines connected with the same bus, if the condition that the voltages of a plurality of feeder lines are lower exists, firstly, not starting the function of the feeder line level AVC, and analyzing according to a bus reverse supply mode.

2) A first alternate feeder line that can be switched on and the corresponding tie switch are determined.

3) And calculating the back supply voltage of the back supply bus after closing the tie switch.

4) Calculating the capacitor connected to the back-off bus enables the terminal voltage of most feeders. If the terminal voltage of most feeder lines is improved, the judgment can be switched in a mode.

5) And changing the operation mode, closing the tie switch, and opening the low-voltage switch of the inverted supply bus.

6) And putting in the capacitor connected with the low-voltage side of the inverted supply bus.

7) And detecting whether the feeder voltage is normal or not, if not, switching to the next standby feeder, and repeating the process of 2-6.

8) Checking whether the feeder voltage is qualified or not after switching back to the original operation mode, and switching to the original operation mode if the feeder voltage is qualified.

Step 214, when the second reverse power supply voltage is within the reverse power supply voltage threshold and the second reverse power supply voltage is lower than the reverse power supply voltage threshold, screening the preset distribution network adjustment strategy according to the second reverse power supply voltage and the second reverse power supply voltage to obtain the second distribution network adjustment strategy.

The switching voltage threshold value comprises a switching voltage lower limit and a switching voltage upper limit.

When the feeder voltage of the first back-off bus is within the normal range, the first back-off bus is adjusted to indicate that the voltage of the second back-off bus is within the normal range. At this time, the first supply voltage needs to be determined again.

And when the second rotation power supply voltage is in the normal range, ending the regulation flow.

And when the second switching power supply is lower than the switching power supply lower limit, selecting a proper regulation strategy, namely a second distribution network regulation strategy, from preset distribution network regulation strategies based on the second switching power supply voltage and the second back-off voltage.

And step 216, adjusting the second transfer bus based on a second distribution network adjustment strategy to obtain a third transfer bus.

Exemplary, a second distribution network adjustment strategy is executed on a second transfer bus, thereby obtaining a third transfer bus

For example, the second grid regulation strategy may choose to upshift or may choose to put a capacitor in the transfer bus and downshift.

In this embodiment, by monitoring the back-supply bus, the feeder line to which the back-supply bus is connected, and the transfer bus after each adjustment, it is determined that the adjusted back-supply bus voltage, the adjusted back-supply feeder line voltage, and the adjusted transfer bus voltage are all within the normal range, so as to ensure that optimal scheduling of the power distribution network is achieved.

In an exemplary embodiment, before performing main network adjustment based on the transfer monitoring information of the transfer bus, the preset transfer bus threshold value and the preset adjustment policy, the voltage control method further includes:

monitoring all buses in the transformer substation to obtain switching information; analyzing the bus based on the switch opening and closing information and preset back supply identification conditions to obtain a back supply bus; after the identification is completed, the monitoring condition of the reverse supply bus is set, and the related data of the main network and the distribution network are input.

The preset reverse supply identification condition comprises that a low switch connected with the bus is opened, a bus-connected switch of the bus is opened, and a tie switch of one feeder line in the feeder lines connected with the bus is closed.

Illustratively, all buses in the transformer substation are monitored, and switching information of each bus is obtained. When the switching information of a certain bus exists and the preset recognition condition of the bus reverse supply is met, determining that the bus is the reverse supply bus. The preset identification conditions are as follows:

the low-voltage switch connected with the bus is disconnected; wherein the low-voltage switch is used for realizing transformation and distribution of electric power;

the bus-bar switch of the bus is disconnected;

The tie switch of one feeder line of the feeder lines connected with the bus is closed; wherein the tie switch is used for controlling and protecting the power system.

After the identification of the inverted supply bus is completed, setting the monitoring condition of the inverted supply bus, specifically comprising:

the bus voltage is below the lower voltage limit;

counting feeder lines connected with a bus, namely a main power transmission line, and considering that the voltage of a certain feeder line is lower when the feeder line meets the low-voltage rated values of a plurality of variable measurement voltages; if the voltage of 2 or more feeder lines is lower, the condition that the voltage of the feeder line group is lower is considered to be satisfied.

And then inputting the related data of the main network and the distribution network. The related data of the main network comprises voltage values of the transfer bus and the reverse bus. The relevant data of the distribution network comprises:

statistical information of distribution changes on each feeder line; the statistical information comprises the lowest voltage, the highest voltage, the lower limit distribution transformer quantity of the voltage and the upper limit distribution transformer quantity of the voltage;

information of reactive controllers on each feeder line; wherein the information of the reactive power controller comprises capacity which is thrown and capacity which is not thrown;

detailed information of out-of-limit distribution changes on feeder lines; the detailed information of the out-of-limit distribution transformer comprises GIS ID (GIS ID is usually a permanent identifier in a distribution network), power factor, voltage and whether a reactive power controller is assembled in a region to which the distribution transformer belongs;

A range of qualified voltage of the distribution transformer;

the reactive power controller influences parameters on the voltage;

voltage information of a 10kV bus; the voltage information comprises the current voltage, average voltage and a voltage qualification range;

main shift information and influence parameters; the main gear comprises a gear ratio gear or a switching gear of the transformer;

topological connection relation.

In this embodiment, analysis of the buses in all the substations is completed by presetting the back supply identification conditions, back supply bus information is determined, namely, back supply bus information is given, and then monitoring conditions and data of the input main network and the distribution network are set, so that the analysis accuracy of the back supply buses is improved.

setting an operation threshold value of a bus: wherein the operating threshold includes an upper voltage limit, a lower voltage limit, an upper reactive power limit, and a lower reactive power limit; the gear of the transformer is regulated, and a first active maximum variation and a first voltage maximum variation of single-gear voltage regulation are obtained; carrying out switching operation of the capacitor on the bus to obtain a second reactive maximum variation and a second voltage maximum variation of switching a group of capacitors; determining a main network adjusting area diagram according to an operation threshold, a reactive maximum variation, a first voltage maximum variation, a second reactive maximum variation and a second voltage maximum variation; and performing strategy setting on each region in the main network regulation region graph to obtain a preset main network regulation strategy.

After the operation threshold of the bus is set, the reactive power variation and the voltage variation of each single-gear voltage regulation are obtained by performing single-gear regulation operation on the transformer, and then the first reactive power maximum variation and the first voltage maximum variation of the single-gear voltage regulation are determined. And performing switching operation on the capacitors connected with the bus to obtain reactive power variation and voltage variation in each group of capacitor switching process, and further determining a second reactive power maximum variation and a second voltage maximum variation of switching one group of capacitors.

And then, obtaining a main network regulation area diagram based on the operation threshold value, the first reactive maximum variation, the first voltage maximum variation, the second reactive maximum variation and the second voltage maximum variation, as shown in fig. 3. Wherein DeltaUu is the maximum variation of single-gear voltage regulation voltage, deltaQu is the maximum variation of single-gear voltage regulation reactive power, deltaUq is the maximum variation of voltage switching a group of capacitors, and DeltaQq is the maximum variation of reactive power switching a group of capacitors.

And performing strategy setting according to the obtained main network regulation area diagram to obtain a preset main network regulation strategy. When the reverse supply condition occurs, the voltage of the transfer bus is lower than the lower limit of the transfer voltage, and the reactive power is different, the reactive power can fall in a plurality of areas such as area 13, area 14, area 15, area 16, area 17 and the like, so that the corresponding preset main network adjustment strategy comprises:

A. Region 13: the lower the voltage in this area (the voltage monitoring point is 10kV bus voltage), the lower the reactive power. Reactive monitoring points are reactive at the high-voltage side of the transformer. The adjusting means comprises:

a) Up-regulating the tap, since the reactive power has been getting lower, the priority should be given to regulating the transformer gear in this area;

b) Reactive power priority, high-cut capacitor, voltage priority, high-throw capacitor;

c) Reactive power priority, regional control cut-off capacitor, voltage priority, regional control put-in capacitor;

B. region 14:

a) Capacitor priority:

1) When the capacitor is thrown and the adjustable capacitor is arranged, the capacitor is thrown preferentially;

2) Up-regulating the tap, and if no adjustable capacitor exists, adjusting the gear of the transformer;

3) Voltage priority, strong capacitor throwing;

b) Transformer priority:

1) When the tap is up-regulated and the transformer is preferential, the gear is preferentially regulated in the area;

2) The voltage is preferential, the capacitor is thrown in strongly, and the other capacitors are thrown in;

C. region 15:

a) Putting a capacitor, wherein reactive power is relatively large, and putting the capacitor is generally preferred;

b) Up-regulating the tap, if there is no adjustable capacitor, making a gear adjustment;

D. region 16:

b) Voltage priority, up-regulating tap, if voltage priority is set, up-regulating transformer gear when there is no adjustable capacitor;

E. region 17:

c) The area control inputs the capacitor, and if the area joint debugging is adopted, the capacitor in the area is regulated according to the situation.

In this embodiment, by identifying and determining the inverted supply bus, setting the monitoring conditions, inputting the data of the main network and the distribution network, setting the operation threshold of the bus, and determining the relevant division data based on the bus operation, the main network adjustment area is determined, and the corresponding main network adjustment policy can be set based on different conditions, so that the transformer substation needs to cooperate to adjust the voltage, and the power distribution network power conversion optimal scheduling can be realized in an auxiliary main-distribution cooperative voltage adjustment mode.

Determining a distribution network adjusting area diagram according to a transfer power supply voltage threshold value of a transfer bus and a reverse power supply voltage threshold value of a reverse bus; and performing strategy setting on each region in the distribution network regulation region graph to obtain a preset distribution network regulation strategy.

For example, after setting the operation threshold of the bus, a distribution network adjustment area map is obtained based on the switching voltage threshold and the inverting voltage threshold, as shown in fig. 4. Wherein, the abscissa V1 represents the voltage condition of the transfer bus, the ordinate V2 represents the condition of the reverse bus, the normal regulation target should fall in the region 5, V1min is the transfer voltage lower limit, V1max is the transfer voltage upper limit, V2min is the reverse voltage lower limit, and V2max is the reverse voltage upper limit. And performing strategy setting according to the obtained distribution network adjustment area diagram to obtain a preset distribution network adjustment strategy. The preset distribution network adjusting strategy comprises the following steps:

a) Region 1: at this time, the lower limit of the voltage of the transfer bus is the lower limit of the voltage of the back-off bus (the situation should be that the capacitor of the back-off bus is put on), and the degree of out-of-limit of the transfer bus and the back-off bus is compared:

strategy 1: if the transfer bus is more serious in out-of-limit, the combination strategy inputs a capacitor on the transfer bus and reduces the gear;

strategy 2: if the reverse supply bus out-of-limit is more serious, the combination strategy is as follows: withdrawing the capacitor on the reverse supply bus and raising the gear;

b) Region 2:

the voltage of the reverse supply bus is normal, and the voltage of the reverse supply bus exceeds the upper limit, and the capacitor of the reverse supply bus is withdrawn, so that the capacitor may enter the area 5 or the area 8. And after exiting, if the voltage is still lower, starting a distribution network strategy. 2 to 8, it may be necessary to further adjust the transformer tap:

strategy 1: a capacitor of the inverted supply bus is withdrawn;

strategy 2: downshifting;

strategy 3: a capacitor that exits the back-off bus causes the back-off bus to go below or near below: the policies are combined policies: withdrawing the reverse supply bus capacitor and increasing the gear;

c) Region 3: at this time, the voltages of the transfer bus and the back-supply bus are higher than the upper limit, and the regulating strategy is to withdraw from the back-supply bus capacitor. At this point it may enter zone 5 or zone 2.

Strategy 1: reducing the gear;

strategy 2: withdrawing the capacitor on the inverted supply bus;

strategy 3: withdrawing the capacitor on the transfer bus;

d) Region 4: the lower the transfer bus is, the normal is the back-off bus (this is typically the case when the capacitor of the back-off bus is put into service). The regulation strategy is to put into transfer the bus capacitor. If the adjustment is followed by entering zone 5, the adjustment is ended.

Strategy 1: capacitor for switching bus

Strategy 2: upshift gear

Strategy 3: a capacitor put into the transfer bus would cause the transfer bus to go above or near above: the policies are combined policies: and putting in the transfer bus capacitor and reducing the gear.

e) Region 5: normal area, no adjustment is required. The voltages of the transfer bus (transfer bus) and the reverse bus (reverse bus) are reasonable. And if the voltage of the connected feeder line of the inverted supply bus is lower, starting the distribution network feeder line to transfer electricity, and executing a feeder line regulation strategy.

f) Region 6: the transfer bus is larger than the upper limit, and the reverse bus is normal. The regulation strategy is to withdraw the transfer bus capacitor. If zone 5 is entered, the adjustment ends.

Strategy 1: the capacitor of the transfer bus is withdrawn;

strategy 2: downshifting;

strategy 3: the capacitor exiting the transfer bus bar may cause the transfer bus bar to go below or near below: the policies are combined policies: withdrawing the transfer bus capacitor and increasing the gear;

g) Region 7: when the inversion mode is initially established, it is most likely that the inversion mode falls in the region 7, that is, the inversion bus voltage is lower than the inversion bus voltage. Regulation strategy: because the reactive power is relatively large at this time, the transfer bus capacitor is up-regulated. After conditioning, it may enter zone 8 or zone 5. If zone 5 is entered, the main network tuning strategy ends. If zone 8 is entered, the adjustment is continued.

Strategy 1: raising the gear;

strategy 2: a capacitor for transferring the bus is put into;

strategy 3: putting a capacitor on the inverted supply bus;

h) Region 8: the lower limit is the normal reverse supply bus voltage of the transfer bus voltage. The back-fed bus capacitor is put in, and after the input, the capacitor may enter the region 5 or the region 1.

If the voltage of the connected feeder line of the inverted supply bus is out of limit at the moment, the voltage balance is eliminated by starting the distribution network feeder line transfer through the distribution network side.

If the area 1 is directly entered from the area 8, it is indicated that after the capacitor of the back-off bus is put in, the voltage of the back-off bus is changed from the lower limit to the upper limit because the capacity of the capacitor is relatively large. And the capacitor of the inverted supply bus is withdrawn from operation subsequently, and the distribution network feeder line of the inverted supply bus is started to transfer electricity.

Strategy 1: putting a capacitor on the inverted supply bus;

strategy 2: upshifting;

strategy 2: if the capacitor put into the back-off bus causes the voltage to go above or near above, a combining strategy is generated: putting a capacitor of the inverted supply bus and reducing the gear;

i) Region 9: and the upper limit of the voltage of the transfer bus is higher, the lower limit of the voltage of the reverse bus is lower, and the voltages of the two buses are compared to obtain the bus with more serious out-of-limit.

Strategy 1: if the transfer bus is out of limit more seriously, withdrawing the capacitor of the transfer bus and simultaneously raising the tap;

strategy 2: if the reverse bus is out of limit more seriously, the capacitor of the reverse bus is put into the device, and the tap is lowered.

In this embodiment, by determining the distribution network adjustment area, and then setting corresponding distribution network adjustment strategies based on different conditions, the transformer substation needs to cooperate to adjust voltage, and the transformer substation is assisted to perform a main-distribution collaborative voltage adjustment mode, so that optimal power distribution network power conversion scheduling can be achieved.

In one exemplary embodiment, a voltage control method includes:

and monitoring all buses in the transformer substation to obtain switching information.

And analyzing the bus based on the switch opening and closing information and preset back-supply identification conditions to obtain a back-supply bus.

Setting an operation threshold of a bus; wherein the operating threshold includes an upper voltage limit, a lower voltage limit, an upper reactive power limit, and a lower reactive power limit.

And adjusting the gear of the transformer to obtain a first active maximum variation and a first voltage maximum variation of single-gear voltage adjustment.

And carrying out capacitor switching operation on the bus to obtain a second reactive maximum variation and a second voltage maximum variation for switching a group of capacitors.

And determining a main network adjusting area diagram according to the operation threshold value, the maximum reactive power variation, the maximum first voltage variation, the maximum second reactive power variation and the maximum second voltage variation.

And determining a distribution network adjusting area diagram according to the switching power supply voltage threshold value of the switching bus and the switching power supply voltage threshold value of the switching bus.

And screening the preset main network regulation strategy according to the transfer voltage and the transfer voltage threshold value to obtain a first type of main network regulation strategy.

And screening the first type of main network regulation strategy according to the transfer reactive power and the transfer reactive power threshold value to obtain the first main network regulation strategy.

And screening a preset distribution network regulation strategy according to the reverse supply voltage and the reverse supply voltage threshold value to obtain a first distribution network regulation strategy.

Monitoring the first transfer supply bus and the first back supply bus to obtain a first transfer supply voltage and a first back supply voltage, and obtaining the first transfer supply voltage and the first back supply voltage.

And comparing the first reverse supply voltage with a preset bus threshold value according to the first reverse supply voltage, and obtaining an adjustment comparison result.

When the first transfer supply voltage exceeds the transfer supply voltage threshold value, screening the preset main network regulation strategy based on the first transfer supply voltage to obtain a second main network regulation strategy.

And adjusting the first transfer bus according to a second main network adjusting strategy to obtain a second transfer bus.

After the second transfer bus is obtained, collecting a second back supply voltage of the first back supply bus and a second transfer voltage of the second transfer bus.

And when the voltage of the second back-off bus in the second back-off voltage is within the back-off voltage threshold, monitoring the feeder line connected with the first back-off bus to obtain the voltages of the feeder lines of the back-off bus.

Comparing each feeder voltage of the first inverted supply bus with a preset feeder voltage threshold value to obtain a feeder comparison result.

When the feeder line comparison result is that the voltage of each feeder line of the first inverted supply bus is lower than a preset feeder line voltage threshold value, adjusting each feeder line based on a preset feeder line adjusting strategy to obtain an adjusted feeder line.

And when the second back-off voltage is within the back-off voltage threshold and the second transfer voltage is lower than the transfer voltage threshold, screening the preset distribution network regulation strategy according to the second transfer voltage and the second back-off voltage to obtain a second distribution network regulation strategy.

It should be understood that, although the steps in the flowcharts related to the embodiments described above are sequentially shown as indicated by arrows, these steps are not necessarily sequentially performed in the order indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in the flowcharts described in the above embodiments may include a plurality of steps or a plurality of stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of the steps or stages is not necessarily performed sequentially, but may be performed alternately or alternately with at least some of the other steps or stages.

Based on the same inventive concept, the embodiment of the application also provides a voltage control device for realizing the above-mentioned voltage control method. The implementation of the solution provided by the device is similar to the implementation described in the above method, so the specific limitation of one or more embodiments of the voltage control device provided below may be referred to the limitation of the voltage control method hereinabove, and will not be repeated here.

In one exemplary embodiment, as shown in fig. 5, there is provided a voltage control apparatus including: a bus adjustment module 502, an information acquisition module 504, a comparison and judgment module 506, and a policy analysis module 508, wherein:

the bus adjusting module 502 is configured to perform main network adjustment based on transfer monitoring information of a transfer bus, a preset transfer bus threshold value, and a preset adjustment policy, and obtain a first transfer bus.

The bus adjusting module 502 is further configured to perform main distribution network adjustment according to the first reverse supply bus, the reverse supply voltage of the reverse supply bus after the main network adjustment, the preset bus threshold value, and the preset adjustment policy, so as to obtain the first reverse supply bus.

The information collection module 504 is configured to monitor the first supply transfer bus and the first supply back bus, obtain a first supply transfer voltage and a first supply back voltage, and obtain a first supply transfer voltage and a first supply back voltage.

The comparison and judgment module 506 is configured to compare the first supply voltage, and a preset bus threshold value to obtain an adjustment comparison result.

And the policy analysis module 508 is configured to repeat the main distribution network adjustment operation when the adjustment comparison result indicates that the first supply voltage is not within the threshold range, until the adjusted supply voltage and the adjusted supply voltage are both within the threshold range, and end the adjustment operation.

In an exemplary embodiment, the bus adjustment module 502 is further configured to screen a preset main network adjustment policy according to the supply voltage and the supply voltage threshold, to obtain a first type of main network adjustment policy; screening the first type of main network regulation strategies according to the transfer reactive power and the transfer reactive power threshold value to obtain a first main network regulation strategy; and regulating the transfer bus according to a main network regulation strategy to obtain a first transfer bus.

In an exemplary embodiment, the bus adjustment module 502 is further configured to screen a preset distribution network adjustment policy according to the back-off voltage and the back-off voltage threshold value, to obtain a first distribution network adjustment policy; and adjusting the inverted supply bus based on the first distribution network adjusting strategy to obtain a first inverted supply bus.

In an exemplary embodiment, the policy analysis module 508 is further configured to screen the preset main network adjustment policy based on the first supply voltage to obtain the second main network adjustment policy when the first supply voltage exceeds the supply voltage threshold; adjusting the first transfer bus according to a second main network adjusting strategy to obtain a second transfer bus; after the second transfer bus is obtained, collecting a second back supply voltage of the first back supply bus and a second transfer voltage of the second transfer bus; when the voltage of the second back-off bus in the second back-off voltage is within a back-off voltage threshold, monitoring a feeder line connected with the first back-off bus to obtain each feeder line voltage of the back-off bus; comparing each feeder voltage of the first inverted supply bus with a preset feeder voltage threshold value to obtain a feeder comparison result; when the feeder line comparison result is that the voltage of each feeder line of the first inverted supply bus is lower than a preset feeder line voltage threshold value, adjusting each feeder line based on a preset feeder line adjusting strategy to obtain an adjusted feeder line; when the second reverse power supply voltage is within the reverse power supply voltage threshold value and the second transfer power supply voltage is lower than the transfer power supply voltage threshold value, screening a preset distribution network regulation strategy according to the second transfer power supply voltage and the second reverse power supply voltage to obtain a second distribution network regulation strategy; and adjusting the first transfer bus based on a second distribution network adjusting strategy to obtain a second transfer bus.

In an exemplary embodiment, the voltage control device further includes an identification and analysis module, configured to monitor all buses in the substation to obtain switch opening and closing information; analyzing the bus based on the switch opening and closing information and preset back supply identification conditions to obtain a back supply bus; after the identification is completed, the monitoring condition of the reverse supply bus is set, and the related data of the main network and the distribution network are input.

In an exemplary embodiment, the voltage control apparatus further includes a policy setting module for setting an operation threshold of the bus bar: wherein the operating threshold includes an upper voltage limit, a lower voltage limit, an upper reactive power limit, and a lower reactive power limit; the gear of the transformer is regulated, and a first active maximum variation and a first voltage maximum variation of single-gear voltage regulation are obtained; carrying out switching operation of the capacitor on the bus to obtain a second reactive maximum variation and a second voltage maximum variation of switching a group of capacitors; determining a main network adjusting area diagram according to an operation threshold, a reactive maximum variation, a first voltage maximum variation, a second reactive maximum variation and a second voltage maximum variation; and performing strategy setting on each region in the main network regulation region graph to obtain a preset main network regulation strategy.

In an exemplary embodiment, the voltage control device further includes a policy setting module, further configured to determine a distribution network adjustment area map according to a switching power supply voltage threshold value of the switching bus and a switching power supply voltage threshold value of the switching bus; and performing strategy setting on each region in the distribution network regulation region graph to obtain a preset distribution network regulation strategy.

The various modules in the voltage control apparatus described above may be implemented in whole or in part by software, hardware, and combinations thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.

In one exemplary embodiment, a computer device is provided, which may be a server, the internal structure of which may be as shown in fig. 6. The computer device includes a processor, a memory, an Input/Output interface (I/O) and a communication interface. The processor, the memory and the input/output interface are connected through a system bus, and the communication interface is connected to the system bus through the input/output interface. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The database of the computer device is used for storing bus monitoring data. The input/output interface of the computer device is used to exchange information between the processor and the external device. The communication interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to implement a voltage control method.

It will be appreciated by those skilled in the art that the structure shown in fig. 6 is merely a block diagram of some of the structures associated with the present application and is not limiting of the computer device to which the present application may be applied, and that a particular computer device may include more or fewer components than shown, or may combine certain components, or have a different arrangement of components.

In an exemplary embodiment, a computer device is also provided, which includes a memory and a processor, the memory storing a computer program, the processor implementing the steps of the method embodiments described above when executing the computer program.

In one exemplary embodiment, a computer-readable storage medium is provided, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method embodiments described above.

In an exemplary embodiment, a computer program product is provided, comprising a computer program which, when executed by a processor, implements the steps of the method embodiments described above.

It should be noted that, the user information (including, but not limited to, user equipment information, user personal information, etc.) and the data (including, but not limited to, data for analysis, stored data, presented data, etc.) referred to in the present application are information and data authorized by the user or sufficiently authorized by each party, and the collection, use, and processing of the related data are required to meet the related regulations.

Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, database, or other medium used in the various embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high density embedded nonvolatile Memory, resistive random access Memory (ReRAM), magnetic random access Memory (Magnetoresistive Random Access Memory, MRAM), ferroelectric Memory (Ferroelectric Random Access Memory, FRAM), phase change Memory (Phase Change Memory, PCM), graphene Memory, and the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory, and the like. By way of illustration, and not limitation, RAM can be in the form of a variety of forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), and the like. The databases referred to in the various embodiments provided herein may include at least one of relational databases and non-relational databases. The non-relational database may include, but is not limited to, a blockchain-based distributed database, and the like. The processors referred to in the embodiments provided herein may be general purpose processors, central processing units, graphics processors, digital signal processors, programmable logic units, quantum computing-based data processing logic units, etc., without being limited thereto.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the present application. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application shall be subject to the appended claims.

Claims

1. A method of voltage control, the method comprising:

performing main distribution network adjustment according to the first transfer supply bus, the back supply voltage of the back supply bus after main network adjustment, a preset bus threshold value and a preset adjustment strategy to obtain a first back supply bus;

Monitoring the first transfer supply bus and the first back supply bus to obtain a first transfer supply voltage and a first back supply voltage, and obtaining a first transfer supply voltage and a first back supply voltage;

comparing the first supply voltage, the first supply voltage and the preset bus threshold value to obtain an adjustment comparison result;

2. The method of claim 1, wherein the shunt monitor information includes shunt voltage and shunt reactive power; the preset transfer bus threshold comprises a transfer voltage threshold and a transfer reactive power threshold; the preset regulation strategy comprises a preset main network regulation strategy; the transfer monitoring information based on the transfer bus, the preset transfer bus threshold value and the preset regulation strategy are used for main network regulation to obtain a first transfer bus, and the method comprises the following steps:

and regulating the transfer bus according to the main network regulation strategy to obtain a first transfer bus.

3. The method of claim 1, wherein the preset adjustment policy comprises a preset main network adjustment policy and a preset distribution network adjustment policy; the preset bus threshold value comprises an inverted voltage threshold value; the main distribution network adjustment is performed according to the inverted supply voltage of the inverted supply bus after the first inverted supply bus and the main network adjustment, a preset bus threshold value and a preset adjustment strategy, so as to obtain a first inverted supply bus, and the method comprises the following steps:

screening a preset distribution network regulation strategy according to the back-off voltage and the back-off voltage threshold value to obtain a first distribution network regulation strategy;

4. The method of claim 1, wherein the back-off supply comprises a back-off bus voltage and a back-off feeder voltage; and when the adjustment comparison result is that the first switching supply voltage or the first back supply voltage is not in the threshold range, repeating the main distribution network adjustment operation until the adjusted switching supply voltage and the adjusted back supply voltage are both in the threshold range and finishing the adjustment operation, wherein the method comprises the following steps of:

adjusting the first transfer bus according to the second main network adjusting strategy to obtain a second transfer bus;

after a second transfer bus is obtained, collecting a second back supply voltage of the first back supply bus and a second transfer voltage of the second transfer bus;

when the feeder comparison result is that the voltage of each feeder of the first inverted supply bus is lower than a preset feeder voltage threshold, adjusting each feeder based on a preset feeder adjusting strategy to obtain an adjusted feeder;

when the second reverse supply voltage is within the reverse supply voltage threshold and the second transfer supply voltage is lower than the transfer supply voltage threshold, screening a preset distribution network regulation strategy according to the second transfer supply voltage and the second reverse supply voltage to obtain a second distribution network regulation strategy;

And adjusting the second transfer bus based on the second distribution network adjusting strategy to obtain a third transfer bus.

5. The method of claim 1, wherein prior to performing a main network adjustment based on the transfer monitoring information of the transfer bus, the preset transfer bus threshold, and the preset adjustment policy, obtaining the first transfer bus, the method further comprises:

analyzing the bus based on the switch opening and closing information and a preset back-supply identification condition to obtain a back-supply bus;

6. The method of claim 1, wherein prior to performing a main network adjustment based on the transfer monitoring information of the transfer bus, the preset transfer bus threshold, and the preset adjustment policy, obtaining the first transfer bus, the method further comprises:

determining a main network adjusting area diagram according to the operation threshold, the maximum reactive power variation, the maximum first voltage variation, the maximum second reactive power variation and the maximum second voltage variation;

7. The method of claim 2, wherein prior to performing a main network adjustment based on the transfer monitoring information of the transfer bus, the preset transfer bus threshold, and the preset adjustment policy, obtaining the first transfer bus, the method further comprises:

8. A voltage control apparatus, the apparatus comprising:

the bus adjusting module is used for carrying out main network adjustment based on transfer monitoring information of the transfer buses, a preset transfer bus threshold value and a preset adjusting strategy to obtain first transfer buses;

The bus adjusting module is further used for carrying out main distribution network adjustment according to the first transfer bus, the back supply voltage of the back supply bus after the main network adjustment, a preset bus threshold value and a preset adjustment strategy to obtain a first back supply bus;

the information acquisition module is used for monitoring the first transfer supply bus and the first back supply bus to obtain a first transfer supply voltage and a first back supply voltage, and obtaining the first transfer supply voltage and the first back supply voltage;

the comparison and judgment module is used for comparing the first reverse supply voltage with a preset bus threshold value according to the first reverse supply voltage, and obtaining an adjustment and comparison result;

and the strategy analysis module is used for repeating the main distribution network adjusting operation when the adjusting comparison result is that the first switching supply voltage or the first reverse supply voltage is not in the threshold range, until the adjusted switching supply voltage and the adjusted reverse supply voltage are both in the threshold range and ending the adjusting operation.

9. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of any of claims 1 to 7 when the computer program is executed.

10. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 7.