80 results about "Automatic voltage control" patented technology

The embodiment of the invention discloses a photovoltaic power station SVG and inverter coordinated AVC optimization control method, and the method comprises the steps: carrying out the operation of a station system according to a voltage instruction of a power grid needing to be adjusted by a station, calculating the total reactive power demand of a photovoltaic power station, and calculating the change degree of the total reactive power output to the bus voltage, distributing the calculated reactive power output demand value to each photovoltaic power generation unit and reactive power compensation equipment in the power station according to a formulated reactive power distribution strategy so as to change reactive power output reference values of a photovoltaic inverter and an SVG, so that the bus voltage of the plant station reaches a control target value, and the voltage and reactive power automatic closed-loop control of multiple units of the new energy plant station is realized; and finally, establishing an AVC (Automatic Voltage Control) control overall framework considering the coordination reactive compensation of the SVG and the inverter of the photovoltaic power station. According to the invention, the voltage of the outlet of the station and the voltage of the low-voltage side of the box transformer substation are considered through the AVC regulation in the station, and reactive power distribution is carried out on the SVG and the inverter in the station, so that the voltage requirement is met.

The invention discloses a virtual oscillator assisted reactive power coordination system and method for a wind power plant, which are used in the technical field of automatic voltage control of a power system, and the virtual oscillator assisted reactive power coordination system for the wind power plant comprises a comprehensive prediction module, a multi-objective optimization module, a high-volatility response module and a low-volatility management module. The active power output data of the wind power plant are acquired in real time, the voltage fluctuation and frequency fluctuation indexes are calculated, the reactive power demand and the voltage stability requirement of the power grid are combined, the needed reactive power regulation quantity is dynamically calculated by using the multi-target optimization model, the response priority can be determined according to the regulation capability of equipment, and the reactive power regulation quantity can be accurately calculated. And a reactive power regulation task and a control strategy of the equipment are formulated, so that the stability of voltage and frequency is maintained while the reactive power demand of the power grid is met, the operation efficiency and stability of the wind power plant and the power grid are improved, and the allocation and management of resources are optimized.

The invention discloses an automatic voltage control method and device for a transformer area substation and electronic equipment, and relates to the technical field of automatic voltage control or other related fields. Obtaining load flow calculation results of the power distribution network model, the transformer low-voltage side model and the target power distribution network from a power grid energy management system; topology analysis is carried out based on the power distribution network model, the transformer low-voltage side model and the load flow calculation result, a feeder line area and a transformer area in the feeder line area are obtained, and the transformer area comprises transformers and distributed new energy equipment; obtaining active power prediction data of distributed new energy equipment in the transformer region, and determining an active power change trend of the transformer in the target time period; and generating a voltage control strategy in the target time period based on the active power change trend of the transformer. According to the invention, the technical problem that the voltage fluctuation of the power grid is easily caused after the distributed new energy is accessed to the power grid in the related technology is solved.

A control method and system for automatic voltage control (AVC) substation reactive power optimization assistance are provided, and belong to the technical field of electric power system operation control. The method includes: determining whether a reactive integrated electric quantity of a main transformer step-down switch of a substation exceeds a set value of reactive integrated electric quantity of the main transformer step-down switch; if yes, determining whether voltage of a 10 kV bus of the substation is qualified; if yes, determining whether a power factor of a transformer step-down switch is greater than a power factor set value of the main transformer step-down switch; if yes, determining whether a reactive power demand of the substation is true; and if yes, putting a capacitor into use to perform reactive on-site balance control.

The application relates to the technical field of automatic voltage control of power systems, and particularly discloses a new energy model splicing method based on CIM for AVC control, which comprises the following specific steps: standardizing the description of wind power and photovoltaic new energy equipment based on CIM; establishing a new energy splicing model to uniformly process the wind power new energy equipment and the photovoltaic new energy equipment; integrating the new energy splicing model with AVC control through a standardized interface; and establishing a closed-loop feedback mechanism between the new energy splicing model and AVC control.

The application relates to the technical field of automatic voltage control of power systems, and discloses a wind power grid-connected regional power grid AVC cooperative control method and system. The method constructs a three-layer dynamic logic architecture: a regional power grid AVC master station layer, a wind power plant cluster logic coordination layer, and a single plant station on-site execution layer. The master station layer constructs a comprehensive coupling degree index based on voltage sensitivity and electrical distance, performs adaptive dynamic partitioning, and generates a corresponding logic coordination unit for each partition; the master station layer periodically solves a multi-objective reactive power optimization model and issues a total reactive power instruction to each partition; the logic coordination unit finely allocates the adjustment amount according to the voltage regulation sensitivity, reactive power margin and response characteristics of each reactive power source; and the on-site execution layer executes the instruction. The application realizes linkage reconstruction of dynamic partitioning and logic coordination units, solves the problems of severe voltage fluctuation and difficult multi-resource coordination under wind power grid connection, and improves voltage stability, economy and equipment operation life.

The invention provides a transformer area voltage prediction-based main and distribution cooperative automatic voltage control method, and belongs to the field of automatic voltage control of a power system. The method comprises the following steps: when a preset next day voltage control period in the current day arrives, generating a main-distribution cooperative control area; calculating the sensitivity of the 220V transformer area voltage to the 10kV bus voltage in the control area; training a preset prediction model based on a time sequence on the basis of the historical voltage data of the 220V transformer area from the current day, and then obtaining a prediction result of the voltage of the 220V transformer area in the next day by using the trained prediction model; based on the prediction result, calculating the voltage demand regulation quantity of the 220V transformer area; and in combination with the sensitivity, calculating the voltage regulation quantity of the 10kV bus so as to adjust the next-day voltage limit value of the 10kV bus, thereby generating a next-day automatic voltage control strategy. According to the invention, cooperative control between the main network and the power distribution network can be effectively realized, and the stability and optimization of the transformer area voltage are ensured.

The invention discloses a hydropower station dynamic grid-connected performance self-evaluation method, system and device and a medium. The method comprises the steps of obtaining real-time operation data of a power grid; analyzing the obtained data, and evaluating the automatic voltage control performance to obtain a first dynamic grid-connected index; evaluating the performance of the excitation and power system stabilizer to obtain a second dynamic grid-connected index; evaluating the automatic power generation control performance to obtain a third dynamic grid-connected index; evaluating the primary frequency modulation performance to obtain a fourth dynamic grid-connected index; and based on the dynamic grid connection index, performing self-evaluation on the assessment index and the compensation index of the power plant, and generating early warning information. The safe and stable operation level of the hydropower station and good interaction with the power grid are improved.

The embodiment of the utility model provides a control logic circuit of a high-temperature reactor excitation system. The control logic circuit comprises an AND gate circuit and a first OR gate circuit which are connected in sequence, the input end of the AND gate circuit is respectively used for accessing an automatic voltage control system exit signal and a manual voltage control signal; the input end of the first OR gate circuit is also used for accessing an automatic voltage control signal, and the output end of the OR gate circuit is used for outputting a voltage control instruction to an excitation system. According to the control logic circuit of the high-temperature reactor excitation system, interlocking logic is added between an automatic voltage control system and manual voltage control, the automatic voltage control system must exit during manual increase and decrease of magnetism, the manual voltage control cannot be operated when the automatic voltage control system does not exit, and the manual voltage control cannot be operated when the automatic voltage control system does not exit. The automatic voltage control system magnet increasing and decreasing and manual magnet increasing and decreasing are reasonably matched, and it is guaranteed that the voltage is safely and stably adjusted when a unit operates.

The application belongs to the technical field of automatic voltage control, and discloses a dynamic voltage regulation system and method of an intelligent voltage converter, which comprises the following steps: acquiring a load current instantaneous value, an output voltage instantaneous value and a switching frequency of a power switching device, and determining a load mutation characteristic parameter; acquiring a voltage regulation priority factor according to the load mutation characteristic parameter and the output voltage instantaneous value; performing hierarchical adjustment on the switching frequency of the power switching device based on the voltage regulation priority factor, and obtaining a dynamic switching frequency; determining a duty cycle adjustment step according to the dynamic switching frequency and the load current instantaneous value; acquiring a duty cycle correction value based on a deviation amplitude of the duty cycle adjustment step and the output voltage instantaneous value; and controlling the switching action of the power switching device according to the dynamic switching frequency and the duty cycle correction value.

The invention belongs to the technical field of voltage control, and particularly relates to an automatic voltage control method based on an EMS and a computer system. Different from the prior art according to the SOC upper and lower limits of the energy storage device in a fixed ideal state, the SOC upper and lower limits of the energy storage device can be dynamically adjusted according to the health state of the energy storage device and / or the power grid load, the service life of the energy storage device can be prolonged, aging equipment is prevented from being in a high SOC state for a long time, and battery attenuation is reduced; the output upper limit is dynamically adjusted according to the power grid state, and the overload risk is prevented; and balance between power grid requirements and equipment health is realized, and the overall operation and maintenance cost is reduced. The technical problem that an existing AVC control method is high in operation and maintenance cost is solved.

The invention discloses an energy storage system power distribution method and system of a grid-connected point, a medium and equipment, and belongs to the technical field of automatic voltage control of a power system, and the method comprises the steps: monitoring the per unit value of the voltage of the grid-connected point and the charge state of an energy storage system in real time; according to a preset voltage threshold value and a charge state threshold value, dividing the grid-connected point voltage per unit value and the charge state of the energy storage system to obtain a plurality of operation condition intervals; for different operation condition intervals, dynamically selecting a preset target function and a corresponding constraint condition combination, and based on the selected target function combination and the constraint condition combination, carrying out iterative calculation to obtain a power adjustment amount of the energy storage system; and controlling the energy storage system to execute power distribution according to the power adjustment amount. Therefore, by implementing the method, the problems of low voltage treatment efficiency and easy overcharge / overdischarge of the energy storage system due to the fact that the difference between the per unit value of the grid-connected point voltage and the energy storage charge state is not comprehensively considered in the prior art can be solved.

The invention provides a method and device for testing a power system stabilizer (PSS) in a water-turbine generator set, and relates to the technical field of water-turbine generator tests.The method comprises the steps that a speed regulator comprehensive tester is connected into a plurality of signal generating devices, and the signal generating devices are used for testing the water-turbine generator set; all devices and subsystems in the water-turbine generator set are checked, and it is determined that experiment conditions are met; enabling the water-turbine generator set to operate in an automatic control mode, closing a power system stabilizer (PSS) function, and carrying out automatic voltage control (AVR) off-line and on-line reference voltage step response tests; an AVR online voltage step and pulse response test is carried out; and testing the gain margin. By testing the water-turbine generator set, the generator model, the excitation system model and the PSS function are verified, and the operation safety of the water-turbine generator set is improved.

This invention discloses a power grid risk early warning method based on digital twins, belonging to the field of power grid risk early warning technology. The method includes: firstly, integrating data from the power grid energy management system, production management system, and information security system to construct a digital twin base for the primary system physical model, the secondary system mechanism model, and associated operating modes; then, considering the virtual automatic voltage control constraint calculation baseline situation; subsequently, injecting hypothetical equipment faults, and linking the execution of electromechanical transient analysis, relay protection action prediction, standby automatic transfer action prediction, and power flow recalculation to form a predictive topology; further, combining power source backtracking and dynamic voltage difference calculation at both ends after virtual disconnection of tie switches, identifying single-source risks, risks from the same upstream power source, and risks of double circuits on the same pole. This method achieves unified extrapolation of power grid operating status, secondary device actions, and structural risks, improving the completeness, foresight, and targeted level of risk identification and response.

The invention discloses a magnetic valve type controllable reactor voltage control method for a wind and light collection system based on automatic voltage control. The method comprises the steps that voltage, current, active power and reactive power parameters of the wind and light collection system are collected in real time through an automatic voltage control AVC system; analyzing voltage level and reactive power distribution based on the acquired parameters, comparing with a preset voltage target value to generate a control strategy to preferentially switch a passive filter bank, switching the filter bank when the voltage is lower than a set value, and switching off part of the filter bank when the voltage is higher than the set value and the power quality is allowed; when the compensation capacity of the filter bank is insufficient, reactive output is dynamically adjusted by adjusting the inductance value of the magnetic valve type controllable reactor; according to the method, real-time monitoring and data acquisition and analysis of the wind and light collection system are realized through an automatic voltage control system, so that the switching of a filter is controlled, the inductance value of a magnetic valve type controllable reactor is accurately regulated and controlled, and the stability of system voltage and the optimization of reactive power are ensured.

This invention discloses a voltage control method for multi-level, multi-park virtual power plants considering equivalent impedance estimation, belonging to the field of power system automatic voltage control and distributed energy collaborative optimization technology. The method includes the following steps: Step S1: Acquisition of virtual power plant related information and initial state setting; Step S2: Park information estimation; Step S3: Equivalent impedance estimation and collaborative model construction; Step S4: Determination of three-level control strategy; Step S5: Three-dimensional collaborative control; Step S6: Correction of model accuracy. This invention deeply integrates hierarchical decision-making and equivalent impedance estimation technologies, enabling refined voltage control in dynamic scenarios and ensuring the coordinated, stable, and efficient operation of virtual power plants across multiple voltage levels and parks.

The invention provides an automatic voltage prevention and control method based on voltage fluctuation ratio prediction, and the method comprises the steps: obtaining and correcting the voltage sequence data of a bus in a target region in a past time period at the arrival moment of a current control cycle; fitting an ARIMA model used for predicting a voltage base value and a GARCH model used for analyzing voltage fluctuation characteristics based on the corrected voltage sequence, respectively generating a voltage base value prediction sequence and a voltage fluctuation rate prediction sequence of a future time period, and finally generating a voltage prediction sequence of the future time period. Further obtaining a dynamic voltage safety domain of the current control period; and the security domain is used as a constraint condition to be embedded into an automatic voltage control system so as to realize automatic voltage prevention and control. According to the invention, through fusion of time sequence analysis and volatility modeling technologies, voltage trend and volatility prediction can be fused, a dynamic control threshold value is generated accordingly, and accurate prediction and dynamic regulation and control of the power grid voltage are realized.

The invention relates to an AGC and AVC dynamic cooperative control method and device, equipment and a medium. Comprising the following steps: based on active output characteristics and reactive output characteristics of multi-type energy storage, establishing active and reactive output models of the multi-type energy storage; establishing a hybrid energy storage system model based on the active and reactive output model, and determining an AGC and AVC cooperative control strategy based on the hybrid energy storage system model and a preset unit; based on the minute-level prediction result of the load demand and the real-time network data, establishing a periodic control model of the power system by using a periodic-real-time double-layer control structure; and establishing an emergency control model by using a preset cross iteration strategy based on a preset key control index, and performing dynamic cooperative control on AGC and AVC based on the periodic control model, the emergency control model and an AGC and AVC cooperative control strategy. Therefore, mutual influence between AGC and AVC is avoided, and dynamic optimization control of the time scale is realized at the same time.

In an aspect of the present disclosure, an IoT-based automated voltage controller system for motor-operated three-phase autotransformer is disclosed and a method thereof. The controller system includes a single-phase bidirectional synchronous motor mechanically connected with a shaft of the autotransformer. The motor changes tapping of windings of the autotransformer through dials. A switch mode power supply (SMPS) circuit is configured to supply power to the voltage controller unit, which primarily steps down the voltage to 5V and rectify thereto into DC voltage. An Arduino-nano microcontroller associated with a plurality of modules. The modules are configured such that the output voltage of the motor-operated three-phase autotransformer remains either constant or varies at +4V irrespective of nature of power supply automatically during full load conditions, thereby compensating supply voltage fluctuations.

The invention provides a superior and subordinate power grid coordination automatic voltage control method considering dynamic reactive power reserve, and belongs to the technical field of power system voltage control. The method comprises the steps that when each automatic voltage control cycle arrives, an AVC control system of a lower-level power grid collects controlled generator information, controlled dynamic reactive power compensation device information and upper-level and lower-level power grid coordination gateway information in real time and sends the information to an AVC control system of the upper-level power grid; and based on the information, the AVC control system of the superior power grid establishes a coordinated secondary voltage control model considering the rapid dynamic reactive power compensation device and issues an optimization result of the model to the AVC control system of the subordinate power grid, so as to realize automatic voltage control of coordination of the superior power grid and the subordinate power grid. According to the method, reactive power output of a traditional power plant and a new energy station containing a dynamic reactive power compensation device can be optimized in superior and subordinate coordination automatic voltage control, safety of coordination node voltage is guaranteed, and safe and stable operation of a power grid is guaranteed.

The application discloses a power plant reactive power voltage control instruction mode evaluation method and system, comprising: obtaining power grid historical operation data of a power plant; inputting the power grid historical operation data into a pre-constructed AVC (Automatic Voltage Control) adjustment performance evaluation model of the power plant to calculate AVC single adjustment performance evaluation indexes of the power plant; obtaining all AVC single adjustment performance evaluation indexes of the power plant in a set evaluation time range, and obtaining AVC total adjustment performance evaluation indexes of the power plant according to a pre-constructed calculation model; and determining a final evaluation result according to a pre-set evaluation index threshold and the AVC total adjustment performance evaluation indexes. Advantages: the method establishes an evaluation index, extracts power grid historical operation data in a period of time, evaluates AVC adjustment performance indexes of each power plant, gives suggestions of AVC control instruction modes of the power plant according to the advantages and disadvantages of the indexes, guides AVC closed-loop control of the power plant, and improves the reactive power voltage control effect.

The invention discloses a hydropower station automatic voltage control and unit reactive PID adjustment method, system and device and a medium, and the method comprises the steps: obtaining a hydropower station bus voltage value, and obtaining a bus voltage adjustment completion or adjustment non-completion signal according to the bus voltage value; a bus voltage regulation completion or non-completion signal and an automatic voltage control input or quit state signal are sent to a unit reactive PID (Proportion Integration Differentiation) module; and based on the bus voltage regulation signal and the automatic voltage control signal, the unit reactive PID module executes closed-loop regulation or open-loop regulation. According to the invention, bus voltage is monitored in real time to obtain a regulation state signal, and the regulation state signal is transmitted to a unit reactive PID module through automatic voltage control; the unit reactive PID module executes closed-loop or open-loop adjustment according to the signal, so that excessive adjustment and oscillation can be avoided, adjustment requirements can be timely responded, reactive power can be accurately adjusted, and the operation stability and efficiency of a power system of a hydropower station can be improved.

The invention discloses an active-active automatic voltage control method and device for a main and standby power grid dispatching system, and the method comprises the steps: carrying out the automatic voltage control of the main and standby power grid dispatching system, achieving an AVC model maintenance function, and automatically synchronizing model maintenance information to a system at the other side when the system at one side carries out AVC model maintenance, and when the system on the other side detects the change of the model information in real time, corresponding model maintenance is automatically carried out. And when the parameters influencing the AVC operation safety are inconsistent, stopping the AVC function of the main and standby dispatching system. And performing automatic synchronization of the AVC models of the main and standby dispatching systems according to types or stations in a manual confirmation mode. And the main and standby dispatching system AVC simultaneously performs AVC optimization operation according to the model information and real-time data in each system to generate a control instruction. And when the control instruction is issued, automatically checking whether the equipment corresponding to the control instruction has the control authority or not, issuing and executing the instruction with the control authority, and completing closed-loop control of AVC.

The application discloses a new energy gathering area reactive power and voltage control method considering power factors, realizes new energy power grid reactive power and voltage coordinated control considering power factors, in one aspect, through adjusting new energy station unit reactive power output, affecting the mode of the central bus (the bus of the new energy gathering area centralized grid-connected substation) voltage value, to track the voltage optimization target value of the central bus in real time, on the other hand, in the process of preferentially tracking the realization of the central bus voltage optimization target value, the requirements of new energy station power factor balance are considered, the problem of unreasonable reactive power distribution or even circulating current among new energy stations is avoided, and therefore the automatic voltage control level of the new energy power grid is improved.

The invention provides a method for calculating power grid active loss caused by automatic voltage control based on sensitivity, and belongs to the technical field of power system voltage control. The method comprises the following steps: when a current automatic voltage control cycle arrives, obtaining a reactive power equipment set influencing the active power loss of the power grid and calculating the sensitivity of reactive power output of each reactive power equipment in the set to the active power flow loss of the power grid; calculating the active power flow loss of the power grid caused by the reactive power equipment in combination with the reactive power output variable quantity of the reactive power equipment in the current automatic voltage control period; and based on the power grid active power flow loss caused by the reactive equipment, performing integration by adopting a rectangular method to obtain the power grid active power loss caused by the reactive equipment. According to the method, the quantitative calculation result of the active loss of the power grid caused by automatic voltage control after the automatic voltage control system is put into closed-loop operation can be obtained online in real time, and safe and efficient operation of the power grid is facilitated.

The invention discloses an automatic voltage control method, system and device for a new energy station and a medium. The method comprises the following steps: acquiring state data and grid-connected point voltage deviation of each reactive power source in the new energy station; when the grid-connected point voltage deviation is greater than a preset voltage threshold value, calculating a reactive compensation demand according to the grid-connected point voltage deviation; based on the state data of each reactive power source, distributing a reactive power compensation demand to each dynamic reactive power source so as to carry out voltage regulation; and after the voltage is stable, optimizing reactive power distribution of the dynamic reactive power source and the static reactive power source by taking maximization of the energy storage reactive power margin as a target. Through the two-stage hierarchical coordination strategy, the voltage stability and the operation efficiency of the new energy station can be improved, and rapid voltage regulation and reactive power resource optimal distribution are realized.

The utility model discloses an automatic voltage control device for a thermal power plant, which relates to the technical field of voltage control appliance fixing and comprises a fixing plate, a control device is mounted in the middle of one end of the fixing plate, fixing grooves are formed in two sides of the fixing plate and penetrate through the fixing plate, and fixing bolts are mounted on the inner sides of the fixing grooves. Through grooves are formed in the two sides of the upper end of the fixing plate. The fixing plate is matched with the moving block on the rear side, so that the automatic voltage control device can be conveniently fixed on the fixing plate, the stability of the automatic voltage control device is improved, the function of fixing the automatic voltage control device can be realized, and the connecting rod is matched with the threaded round frame, so that the automatic voltage control device can be fixed conveniently. The automatic voltage control device is convenient to adjust according to fixing holes in different fixing plates, the convenience of installation of the automatic voltage control device is improved, the function of installing and fixing the automatic voltage control device can be achieved, and finally the problem that the automatic voltage control device of the thermal power plant is inconvenient to disassemble, assemble and fix is solved.

The invention discloses a reactive voltage operation evaluation method and system for a cluster photovoltaic power station, and relates to the technical field of photovoltaic power generation, and the method comprises the steps: calculating a voltage quantitative index based on real-time operation data, and providing a data basis for evaluation; the Kirchhoff's law is used for defining reactive circulation and unbalanced distribution characteristics, and accurate definition and recognition of abnormities are achieved; constructing an equivalent circuit model and revealing topological influence through a sensitivity matrix of load flow calculation; an automatic voltage control mechanism is analyzed, and the root of a regulation problem is revealed; factors such as the electrical distance, the regulation rate and the chain structure power station voltage regulation coupling strength are comprehensively considered, the reactive power output distribution coefficient of each photovoltaic power station is calculated in a weighted mode, and resource coordination is improved; and constructing a quantitative index system based on an abnormal identification and regulation operation mechanism, and carrying out comprehensive state evaluation. The method overcomes the fuzzy limitation of previous description, provides a mathematical physical basis, and supports the scientific decision of operators.

The invention provides a safety anti-misoperation control system and method for an energy storage power station. The system comprises a data acquisition module, a data processing module and a data processing module, wherein the data acquisition module is configured to acquire power operation data of the energy storage power station; the operation condition identification module is configured to identify the operation condition of the energy storage power station based on the power operation data to obtain an operation condition category; the control instruction verification module is configured to perform multi-dimensional verification on control instructions received by the automatic power generation control system and the automatic voltage control system, and judge whether the control instructions are abnormal or not; the anti-misoperation decision-making module is configured to determine emergency active power or emergency reactive power based on local measurement data if the control instruction is abnormal, and control the energy storage power station to operate at the emergency active power or the emergency reactive power, so as to solve the problem that when the control instruction of the current automatic power generation control system and the automatic voltage control system is abnormal, the emergency active power or the emergency reactive power cannot be used. And the system cannot perform inspection and cannot automatically provide an emergency scheme for emergency operation of the energy storage power station.

The invention relates to a fixed value setting optimization method for automatic voltage control of a power grid, which comprises the following steps of: respectively clustering and grouping voltage curves and power factor curves of buses in main transformers in the power grid according to reactive voltage characteristic change of the power grid to set AVC fixed values; according to the reactive power balance evaluation result, the bus voltage and the main transformer power factor of the transformer substation are corrected in a rolling manner, so that the system runs within a qualified range in a reactive power and voltage manner; according to the method, a fixed value setting mode is more flexible and more targeted, reactive voltage characteristics of different transformer substations can be better adapted, and a regulation target is more accurate; rolling correction and closed-loop regulation of a reactive voltage control constant value are realized, the reactive voltage regulation speed and regulation effect are improved, and reactive layered and partitioned in-situ balance is realized; dependence of reactive voltage control fixed value setting work on manpower is reduced, manpower resources are saved, real-time optimization of reactive voltage is achieved under the conditions of different time periods and different load characteristics, and optimal reactive voltage regulation is guaranteed at any time.