CN104319779B - Regional power grid reactive voltage control method - Google Patents
Regional power grid reactive voltage control method Download PDFInfo
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- CN104319779B CN104319779B CN201410553543.6A CN201410553543A CN104319779B CN 104319779 B CN104319779 B CN 104319779B CN 201410553543 A CN201410553543 A CN 201410553543A CN 104319779 B CN104319779 B CN 104319779B
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- 230000005611 electricity Effects 0.000 description 10
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- 238000004134 energy conservation Methods 0.000 description 2
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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Abstract
The invention discloses a regional power grid reactive voltage control method, and the method comprises the steps as follows: S1, building the power grid topology network covering all power substations in the whole network; S2, real time collecting power grid real time data in regional power grid and extracting effective real time data; S3, calculating and analyzing the effective real time data, obtaining more than one control strategy for realizing reserve area power grid reactive voltage control target by capacitor switching or transformer gear adjusting operation, generating the control strategy set; S4, combining the power grid topology network, selecting optimum control strategy with least operation step to the capacitor or transformer; S5, judging the optimum control strategy; when the optimum control strategy is right, generating power grid remote control command, when the optimum control strategy is wrong, returning to the step S3; S6, realizing reactive voltage control target according to the power grid remote control command and returning to the step S2. The regional power grid reactive voltage control method can have reactive control for regional power grid and have smallest power loss.
Description
Technical field
The present invention relates to technical field of electric power automation, more particularly, to a kind of area power grid reactive voltage control method.
Background technology
Stablizing of voltage may insure normally running and extending its service life, with user to confession of various electrical equipments
The increasingly raising that electricity quality requires, rate of qualified voltage becomes a subject matter of their unusual care.Examining for economy
Consider, be unable to long-distance sand transport reactive power in electrical network, to avoid the energy loss caused by long-distance transmissions reactive power as far as possible.
Meanwhile, voltage and Reactive Power Control are one and are related to guarantee power supply quality, meet user's reactive power demand and system electricity
The problem of pressing lattice, is also to reduce network loss, the effective measures of raising operation of power networks economy, is constantly subject to Operation of Electric Systems people
The close attention of member.In power system, therefore realize voltage ＆ reactive power-control there is extensive and important economic benefit and society
Can benefit.
Part electric substation has had VQC (VQC) putting into operation at present.This device is usually basis
The position on administrative division map that this electric substation is run, to provide control measure, meets the builtin voltage requirement of this electric substation and idle work(
The reasonable layout of rate.This electric substation step voltage is idle local optimum Comprehensive Control Technology comparative maturity, but still have following not
Foot：First, the optimization of local can only be realized it is impossible to realize system-wide optimum control, and only can guarantee that controlled busbar voltage is closed
Lattice are it is impossible to reach the minimum purpose of the whole network power attenuation；2nd, occur that voltage frequently adjusts in two grades of on-load voltage regulation electrical networks, hold
Easily cause voltage-regulation un-reasonable phenomenon, not enough to the regulating power of the middle terminal voltage of three-winding transformer；3rd, VQC device
Adjusting control is based on given voltage power-less upper lower limit value, and the determination of voltage power-less upper lower limit value will rely on the warp of attendant
Test, lack a set of effective computational methods, if upper lower limit value gives unreasonable, no matter how perfect regulation measure is, all can not
Can reasonably be controlled；4th, each electric substation is both needed to put into VQC device, also can increase the equipment investment of power supply enterprise.
Content of the invention
The technical problem being existed based on background technology, the present invention proposes a kind of area power grid reactive voltage control method,
The whole network power attenuation minimum purpose can be reached while realizing the reactive power/voltage control target of area power grid.
A kind of area power grid reactive voltage control method proposed by the present invention, sets up covering the whole network using electric network model and respectively becomes
Electricity topological network, by Real-time Collection real-time data of power grid, the whole network is monitored, and according to reactive power/voltage control target
Adjusted by capacitor switching and transformer gear and ensureing to be optimized control to area power grid on the premise of the whole network voltage is qualified
System；The method comprising the steps of：
S1, foundation cover the power network topology network of each electric substation of the whole network；
S2, the real-time data of power grid of Real-time Collection area power grid are simultaneously detected, will detect qualified real-time data of power grid
It is analyzed processing and extract effective real time data；
S3, effective real time data is carried out calculate analysis, obtain can pass through capacitor switching or transformer no less than one
Gear adjusts the control strategy realizing predetermined area power grid reactive power/voltage control target, and generates control strategy set；
S4, combine power network topology network, each control strategy of analysis implement after the whole network running status, ensureing that the whole network voltage closes
The optimal control policy minimum to capacitor or transformer operating step is selected on the premise of lattice；
S5, optimal control policy is judged；When optimal control policy is correct, generate electrical network telecommand, when
When excellent control strategy is incorrect, return to step S3；
S6, the capacitor switching state specified or transformer gear are adjusted according to electrical network telecommand, realize reactive voltage
Return to step S2 after control targe.
Preferably, step S1 is specially：Done root node built for child node with secondary substation with local one time power transformation
Stand and be no less than a trunk net, generate power network topology network in conjunction with the whole network all trunks net.
Preferably, step S2 is specially：Travel through each child node collection electrical network real-time in area power grid corresponding trunk net
Data is simultaneously detected, extracts effective real time data by detecting that qualified real-time data of power grid is averaging processing, and will be effectively
Real time data backup storage.
Preferably, in step S2, the detection of real-time data of power grid is included with message correctness verification data validity school
Test.
Preferably, in step S2, the real-time data of power grid of collection includes：The switch shape of electric substations at different levels main transformer and capacitor
State, disconnecting link state；The current gear of electric substations at different levels transformer；Active, the idle, voltage of electric substations at different levels；Relay protection is believed
Number.
Preferably, relay protection signal includes：Capacitor faults signal and main transformer fault-signal.
Preferably, step S3 is specially：Effective real time data is analyzed, calculates power factor of electric network, one time power transformation
Reactive-load compensation redundancy K of capacitor of idle, each substation busbars voltage and each electric substation and capacitor switching coefficient
M, and the M value of each capacitor is ranked with clear and definite switching order, analysis obtains can pass through capacitor switching no less than one
Or transformer gear is adjusted to realize the control strategy of area power grid reactive power/voltage control target, and generate control strategy set.
Preferably, in step S3, area power grid reactive power/voltage control target is obtained by communication or arranges manually.
Preferably, in step S5, the standard of optimal control policy correctness is：Grid equipment whether can be led to abnormal, be
No beyond number of operations restriction, if beyond the operating time interval, if be capable of electric network reactive-load voltage control targe.
Preferably it is characterised in that in step S5, when optimal control policy is correct, being backed up storage, and generate electricity
Net telecommand.
Present invention achieves the local optimum of the online optimal reactive power dispatch of electrical network the whole network and idle control targe automatically controls
Coordinate, improve the quality of voltage of whole electrical network, reduce electric network active and be lost it is ensured that the voltage of each transformer station is qualified, adjust
Section action promptly and accurately, meets actual motion demand.
The present invention combines power network topology network, can either realize the optimization of partial electric grid, enables the optimum control of the whole network again
System, can also reach the whole network power attenuation minimum purpose while ensureing that controlled busbar voltage is qualified.
The present invention is preferentially chosen to the multiple embodiments of achievable network optimization target with reference to the whole network situation, and right
Telecommand is judged, realizes network optimization target in the way of guarantee is minimum by advantages of simple, step.
The present invention, according to each electric substation building topology network, enters line number to each electric substation in the way of will pass through traverse node
Adjust with monitoring according to collection, be conducive to improving the preciseness of the whole network inspection, it is to avoid omit.
The present invention can realize the voltage ＆ var control of the whole network according to the operation information of the whole network system, thus ensureing network-wide basis
The qualified reasonable layout with reactive power of interior quality of voltage.
Brief description
Fig. 1 is a kind of area power grid reactive voltage control method flow chart proposed by the present invention.
Fig. 2 is a kind of area power grid reactive voltage control system structural representation.
Specific embodiment
With reference to Fig. 1, a kind of area power grid reactive voltage control method proposed by the present invention, set up using electric network model and cover
The locally topological network of each electric substation, is monitored to the whole network by Real-time Collection real-time data of power grid, and according to reactive voltage
Control targe is adjusted by capacitor switching and transformer gear and is ensureing on the premise of the whole network voltage is qualified, regional the whole network to be entered
Row optimal control.
This area's electric network reactive-load voltage control method comprises the following steps：
S1, done with local one time power transformation root node and with secondary substation for child node set up be no less than a trunk
Net, generates power network topology network in conjunction with the whole network all trunks net.
In this step topological network should cover locally all electric substation and meet local power grid model actual conditions.
S2, area power grid corresponding trunk net travels through each child node collection real-time data of power grid and is detected, will
Detect that qualified real-time data of power grid is averaging processing the effective real time data of extraction, and effective real time data is backed up storage.
In this step, real-time data of power grid includes：The on off state of electric substations at different levels main transformer and capacitor, disconnecting link state；Respectively
The current gear of level electric substation transformer；Active, the idle, voltage of electric substations at different levels；Relay protection signal etc..Wherein, at different levels
The on off state of electric substation's main transformer and capacitor, disconnecting link state, that the current gear of electric substations at different levels transformer belongs to electrical network is distant
Letter data, active, idle, the voltage of electric substations at different levels belong to electrical network telemetry.Relay protection signal includes：Capacitor event
Barrier signal and main transformer fault-signal etc..
In this step, the real-time data of power grid of collection is more comprehensive, is more conducive to the accurate judgement to electrical network real-time status.
The detection that real-time data of power grid is carried out includes message correctness verification data validity check, is conducive to deleting
Invalid real-time data of power grid, improves the correctness of subsequent treatment.
In this step, extract effective real time data to detecting that qualified real-time data of power grid is averaging processing, specifically,
N group data is carried out with the average computation effective real time data of extraction and as the whole network calculating and controls the data source analyzed, do so,
Can ensure that the foundation of calculating is relatively steady, prevented the impact of accidental data.The value of N can be determined on a case-by-case basis, such as electricity
The frequency acquisition of net real time data, the whole network cover quantity of electric substation etc..In present embodiment, go out for the effective real time data of guarantee
Existing frequency, arranges 3≤N≤10.
S3, effective real time data is carried out calculate analysis, obtain can pass through capacitor switching or transformer no less than one
Gear adjusts the control strategy realizing regional pre-determined network reactive power/voltage control target, and generates control strategy set.
Area power grid reactive power/voltage control target can be obtained by communication, and for example superior system is assigned to lower system,
Can be arranged manually according to actual conditions by staff.
In this step, to needing to realize effectively counting in real time of the area power grid corresponding trunk net of reactive power/voltage control target
According to being analyzed, calculate power factor of electric network, primary substation is idle, the electric capacity of each substation busbars voltage and each electric substation
Reactive-load compensation redundancy K of device and capacitor switching coefficient M, and the M value of each capacitor is ranked with clear and definite switching order,
Judge the whole network each electric substation state.Then, the control strategy of all achievable reactive power/voltage control targets is formulated for trunk net,
The content of control strategy is to carry out switching operation to capacitor or transformer carries out gear regulation, and all control strategies are formed
Control strategy set.So, using trunk net as process object, carried out by way of traveling through each of trunk net node point
Analysis, level is strong, can avoid omission or the repetition of Data processing, improves accuracy.
S4, combine power network topology network, each control strategy of analysis implement after the whole network running status, ensureing that the whole network voltage closes
The optimal control policy minimum to capacitor or transformer operating step is selected on the premise of lattice.
Specifically, after to the enforcement of each control strategy, the whole network running status is analyzed, thus ensureing the whole network voltage
Select on the premise of qualified to capacitor or the minimum control strategy of transformer operating step as optimal control policy.
S5, optimal control policy is judged；When optimal control policy is correct, carry out storage backup, and according to
Excellent control strategy generates electrical network telecommand, when optimal control policy is incorrect, return to step S3.
In this step, judge that the standard of optimal control policy correctness is：Grid equipment whether can be led to abnormal, if
Limit beyond number of operations, if beyond operating time interval, if be capable of electric network reactive-load voltage control targe.
S6, the capacitor switching state specified or transformer gear are adjusted according to electrical network telecommand, to realize area electricity
Return to step S2 after net reactive power/voltage control target.
The area power grid reactive voltage present invention being provided below in conjunction with specific area power grid reactive voltage control system
Control method is further explained.
With reference to Fig. 2, a kind of area power grid reactive voltage control system proposed by the present invention, electrical network can be directly connected to existing
SCADA system (Supervisory Control And Data Acquisition, data acquisition and supervisor control), and
Realize the data acquisition and control to electrical network using SCADA system, make full use of existing grid equipment, the system that saves is set up
Cost, reduces difficulty of construction.
This area's electric network reactive-load voltage control system includes topological network and sets up module, data collection and analysis module, idle
Instruction input module, reactive voltage analysis module, control output module and memory module.Wherein, topological network is set up module and is divided
Not Lian Jie data collection and analysis module and reactive voltage analysis module, data collection and analysis module and reactive voltage analysis module equal
Connect memory module, idle instruction input module connects reactive voltage analysis module, and it is defeated that reactive voltage analysis module connects control
Go out module.
Idle instruction input module connects reactive voltage analysis module, sends as saved tune etc. for receiving higher level's scheduling system
Reactive power/voltage control target instruction target word, or staff input reactive power/voltage control target instruction target word so that reactive voltage analysis
Module obtains area power grid reactive power/voltage control target.
Realize the area power grid reactive voltage control method of present invention offer using this system, step is as follows：
S1, topological network set up module according to regional electric network model to be once changed into root node and with two in area power grid
The secondary child node that is changed into sets up trunk net, and generates power network topology network according to multiple trunk nets.So, power network topology network be with
The one-to-one topological structure of area power grid.
S2, data collection and analysis module travel through each child node in area power grid corresponding trunk net and adopt from SCADA system
Collection real-time data of power grid, and real-time data of power grid is carried out with the detection qualified data of acquisition, asked for averagely by data qualified to N group
Value to obtain effective real time data, and by effective real-time data memory to memory module.
Real-time data of power grid includes：The on off state of electric substations at different levels main transformer and capacitor, disconnecting link state；Electric substations at different levels
The current gear of transformer；Active, the idle, voltage of electric substations at different levels；Relay protection signal.Relay protection signal includes：Electricity
Reservoir failure signal and main transformer fault-signal.Real-time data of power grid is the foundation that electric network state is judged.
It is effective that the detection that data collection and analysis module is carried out to real-time data of power grid includes message correctness verification data
Property verification.
The verification of message correctness includes：Whether synchronization character is complete, frame length whether correct, CRC (Cyclic
Redundancy Check, CRC) verify and whether pass through.
Data validation includes：The judgement of correct data scope, the judgement of comprehensive remote signalling amount state.For in voltage
Hold, often sometimes because the reason such as have a power failure, overhaul, cause the telemetry value sending abnormal, and now, belong to for capture program
Normal condition, when this happens, locking relevant device or the corresponding power transformation of setting are done and are exited state, no longer it are entered
Row calculates and analyzes；And the whole network other parts, still normally run, unaffected.So it may be determined that transmitting terminal sent interior
Appearance is genuine and believable and can adopt, to ensure that system will not do sentencing of making mistake because real-time data of power grid gathers mistake
Disconnected.
Data collection and analysis module does not directly adopt to the qualified data in the real-time data of power grid receiving, but to N
Group data carries out the average computation effective real time data of extraction and as the whole network calculating and controls the data source analyzed, and do so can
Relatively steady to ensure the data participating in calculating, prevent the impact of accidental data.The value of N can be determined on a case-by-case basis, such as
The frequency acquisition of real-time data of power grid, the whole network cover quantity of electric substation etc..The value of N is bigger, effective real time data of acquisition
Representativeness is higher, it is contemplated that amount of calculation, with effective real-time data acquisition frequency, the span of N be preferably 3≤N≤
10.
Data collection and analysis module combines network topology structure, by way of traverse node, the whole network is detected and controls
System, beneficial to the preciseness improving the whole network control, it is to avoid error.
S3-S5, reactive voltage analysis module are analyzed to effective real time data, calculate the whole network power factor, once become
Electricity reactive-load compensation redundancy K of capacitor of idle, each substation busbars voltage and each electric substation and capacitor switching system
Number M, ranks to M value with clear and definite switching order, and selects optimal control policy to generate electrical network with reference to power network topology network
Telecommand, and electrical network telecommand is stored memory module.Electrical network telecommand includes：The switching operation of capacitor and/
Or the upshift of ULTC gear or downshift are adjusted.
Specifically, reactive voltage analysis module travels through child node in trunk net and calculates area electricity according to effective real time data
The power factor of net, primary substation is idle, the reactive-load compensation of the capacitor of each substation busbars voltage and each electric substation remains
The service data such as remaining K and capacitor switching coefficient M, the M value of each capacitor is ranked with clear and definite switching order.Idle electricity
Pressure analysis module combines regional operation of power networks data and area power grid reactive power/voltage control target, and analysis obtains and can achieve this mesh
The all control strategies of target, the measure of control strategy includes capacitor is carried out with switching operation and/or has load transformer to carry out shelves
Position pressure regulation.All control strategies of the corresponding same trunk net of reactive voltage analysis module set generate control strategy set, then
By carrying out area power grid comprehensive analysis with reference to power network topology network, that is, according to the effective real time data of the whole network calculate the whole network power because
Number, primary substation is idle, reactive-load compensation redundancy K of capacitor of each substation busbars voltage and each electric substation etc.,
Ensure that selecting the minimum control strategy of operating procedure on the premise of the whole network voltage is qualified is carried out as optimal control policy and to it
Correction judgement.When optimal control policy is correct, reactive voltage analysis module generates electrical network remote control according to optimal control policy
Instruction.
Optimal control policy refers to be capable of the minimum plan of the advantages of simple of electric network reactive-load voltage control targe, step
Slightly, its perfect condition is, only carrying out a secondary control to a capacitor or transformer just realizes area power grid reactive power/voltage control
Target.
Reactive voltage analysis module judges that the standard of optimal control policy correctness is：Grid equipment whether can be led to different
Often, if limit beyond number of operations, if beyond operating time interval, if be capable of the voltage-controlled mesh of electric network reactive-load
Mark.
The calculating of M value has considered energy-saving effect, the compensation effect of capacitor switching and the impact to busbar voltage.M
Value is bigger, and the energy-conservation of input and voltage effect are better；M value is less, and the energy-conservation of input and voltage effect are poorer.M by capacitor
Value is ranked, and specifies the switching order of each capacitor, very intuitively, is conducive to the analysis of reactive voltage analysis module to judge.
Electrical network telecommand is transported to SCADA system to throw by adjusting the capacitor specified by S6, control output module
Cut state or transformer gear realizes area power grid reactive power/voltage control target..
After electrical network telecommand is performed, data collection and analysis module the whole network real time data is carried out the collection of a new round with
Analyzing and processing, reactive voltage analysis module is monitored to the whole network running status according to effective real time data, can according to default when
Between section primary substation, secondary substation and the whole network network loss situation are inquired about and are counted.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any those familiar with the art the invention discloses technical scope in, technology according to the present invention scheme and its
Inventive concept equivalent or change in addition, all should be included within the scope of the present invention.
Claims (7)
1. a kind of area power grid reactive voltage control method covers each power transformation of the whole network it is characterised in that setting up using electric network model
Topological network, by Real-time Collection real-time data of power grid, the whole network is monitored, and according to reactive power/voltage control target lead to
Cross capacitor switching and transformer gear adjusts and ensureing to be optimized control to area power grid on the premise of the whole network voltage is qualified；
The method comprising the steps of：
S1, foundation cover the power network topology network of each electric substation of the whole network；
S2, the real-time data of power grid of Real-time Collection area power grid are simultaneously detected, the real-time data of power grid detecting qualified is carried out
Analyzing and processing extracts effective real time data；
S3, effective real time data is carried out calculate analysis, obtain can pass through capacitor switching or transformer gear no less than one
Adjust the control strategy realizing predetermined area power grid reactive power/voltage control target, and generate control strategy set；
S4, combine power network topology network, each control strategy of analysis implement after the whole network running status, ensureing that the whole network voltage is qualified
Under the premise of select the optimal control policy minimum to capacitor or transformer operating step；
S5, optimal control policy is judged；When optimal control policy is correct, generate electrical network telecommand, when optimum control
When making tactful incorrect, return to step S3；
S6, the capacitor switching state specified or transformer gear are adjusted according to electrical network telecommand, realize reactive power/voltage control
Return to step S2 after target；
Step S1 is specially：With local one time power transformation do root node and with secondary substation for child node set up be no less than one
Trunk net, generates power network topology network in conjunction with the whole network all trunks net；
In step S5, the standard of optimal control policy correctness is：Grid equipment whether can be led to abnormal, if beyond operation
Number of times limits, if beyond operating time interval, if be capable of electric network reactive-load voltage control targe；
In step S5, when optimal control policy is correct, backed up storage, and generated electrical network telecommand.
2. area power grid reactive voltage control method as claimed in claim 1 is it is characterised in that step S2 is specially：On ground
Travel through each child node collection real-time data of power grid in area's electrical network corresponding trunk net and detected, will detect that qualified electrical network is real
When data be averaging processing extraction effective real time data, and by effective real time data back up storage.
3. area power grid reactive voltage control method as claimed in claim 2 is it is characterised in that real-time to electrical network in step S2
The detection of data includes message correctness verification data validity check.
4. area power grid reactive voltage control method as claimed in claim 2 it is characterised in that in step S2 collection electrical network
Real time data includes：The on off state of electric substations at different levels main transformer and capacitor, disconnecting link state；Electric substations at different levels transformer current
Gear；Active, the idle, voltage of electric substations at different levels；Relay protection signal.
5. area power grid reactive voltage control method as claimed in claim 4 is it is characterised in that relay protection signal includes：
Capacitor faults signal and main transformer fault-signal.
6. area power grid reactive voltage control method as claimed in claim 1 is it is characterised in that step S3 is specially：To having
Effect real time data is analyzed, and calculates power factor of electric network, primary substation is idle, each substation busbars voltage and each power transformation
Reactive-load compensation redundancy K of capacitor and capacitor switching coefficient M, and the M value of each capacitor is ranked with clear and definite
Sequentially, it is idle that analysis acquisition can realize area power grid by capacitor switching or transformer gear regulation no less than one to switching
The control strategy of voltage control targe, and generate control strategy set.
7. area power grid reactive voltage control method as claimed in claim 1 is it is characterised in that in step S3, area power grid
Reactive power/voltage control target is obtained by communication or arranges manually.
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| CN106329540A (en) * | 2016-10-09 | 2017-01-11 | 国网上海市电力公司 | Reactive voltage control system for light-load period of power grid |
| CN110808634A (en) * | 2019-11-06 | 2020-02-18 | 国网安徽省电力有限公司安庆供电公司 | Reactive numerical value abnormity detection system |
| CN113162056B (en) * | 2021-03-22 | 2023-01-06 | 华北电力科学研究院有限责任公司 | Automatic voltage control method and device for extra-high voltage power grid |
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| CN1851997A (en) * | 2006-04-29 | 2006-10-25 | 枣庄供电公司 | Distribution-type real-time voltage power-less optimized controlling method |
| CN103475003A (en) * | 2013-09-16 | 2013-12-25 | 国电南瑞科技股份有限公司 | Automatic regional power grid voltage reactive power control method based on regional strategy optimization |
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| CN103475003A (en) * | 2013-09-16 | 2013-12-25 | 国电南瑞科技股份有限公司 | Automatic regional power grid voltage reactive power control method based on regional strategy optimization |
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