CN109347116A - The method that centralized watch is carried out to the whole network reactive voltage state using automatic voltage control system - Google Patents
The method that centralized watch is carried out to the whole network reactive voltage state using automatic voltage control system Download PDFInfo
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- CN109347116A CN109347116A CN201811290056.XA CN201811290056A CN109347116A CN 109347116 A CN109347116 A CN 109347116A CN 201811290056 A CN201811290056 A CN 201811290056A CN 109347116 A CN109347116 A CN 109347116A
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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
- H02J3/16—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by adjustment of reactive power
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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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- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
A method of centralized watch is carried out to the whole network reactive voltage state using automatic voltage control system, belongs to dispatching of power netwoks and manages field.It is included in closed-loop process system to the more limit information found in the alarm block signal of AVC system and operation, concentration, outstanding problem are analyzed, abnormal cause and solution are found out, abnormality processing process is constantly improve, makes process flow complete in detail.Which raises the Operating ettectiveness of AVC system, further improve the controlled level of voltage power-less, ensure power network safety operation, it ensure that the qualification of interdependent node voltage and power factor, farthest reduce the idle transmission of route, reduces power grid active loss because of caused by unnecessary reactive power flow.It can be widely used for dispatching of power netwoks control field.
Description
Technical field
The invention belongs to dispatchings of power netwoks to manage field, more particularly to a kind of for using automatic voltage control system to the whole network
The method of reactive voltage state progress centralized watch.
Background technique
Power grid automatic voltage control system (Automatic Voltage Control, abbreviation AVC) is by electric system
In the data such as each node remote measure and communication carry out on-line analysis and calculating, realize the optimal control to voltage and reactive-load compensation equipment,
So that the control amounts such as the transmission of rate of qualified voltage, reactive power, power factor meet boundary condition, improve the operation feelings of electric system
Condition reduces line loss, improves the stability and economy of electric system.
Power grid automatic voltage control system (AVC) major function is guaranteed under the premise of ensuring power network safety operation
Voltage and critical point power factor are qualified, caused by reducing the idle transmission of route as far as possible, reducing power grid because of unnecessary reactive power flow
Active loss.
Automatic voltage control system carries out centralized watch and analytical calculation to the whole network reactive voltage state, from global angle
Coordination optimization control is carried out to the electric network reactive-load device of wide area dispersion, system voltage stabilization is to maintain, promotes network voltage quality
With the important technical of whole system economic operation level, raising Reactive Voltage Management level.
Area power grid AVC system is expansion of the master station automation advanced applied software technology to closed-loop control direction.Pass through
Complete high-speed power data communication network can be acquired in control centre and include using the SCADA application function of main station system
Real time information including busbar voltage, generator output, Line Flow, switch tool etc., and can be complete in a control centre distant place
At the remote control remote regulating operation such as the adjustment of generator reactive power output, the lifting of capacity reactance device switching, load tap changer.
The regulating measure of AVC is to adjust on-load regulator transformer tap and capacitor switch, makes voltage and idle satisfaction
Condition.It is measured by node each in monitoring system, advises to system or control.The overall principle is voltage first, when pressure regulation
It takes into account idle, makes system voltage in limits, power control is in qualified, idle in-situ balancing of respectively standing.AVC controls plan
It slightly include region voltage strategy, busbar voltage strategy, region is idle strategy, single idle strategy of standing, control flow is as shown in Figure 1.
Certain regional power grid belonging to applicant is in the online debugging process of AVC, it was found that following FAQs:
One, AVC is frequently latched: for equipment in protection operation, preventing incorrect control command from causing to damage to controlled device
Evil, AVC can be by device latchup and automatic trigger generates AVC alarm signal.
In actual operation, AVC abnormality alarming latch status it is general there are two types of: the movement time of loaded switch/capacitor switch
Number is out-of-limit；The tripping twice of loaded switch/capacitor switch, the reason of causing number out-of-limit or tripping twice, are varied, need
It is made a concrete analysis of according to different situations.
Two, operation data occur under nominal situation repeatedly out-of-limit: there are mainly two types of the reasons for causing operation data out-of-limit, and one
It is the regulating power that operating condition exceeds control system, second is that control strategy is not suitable with carrying out practically condition.
How to solve the above problems, becomes problem anxious to be resolved in real work.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of using automatic voltage control system to the whole network reactive voltage
The method of state progress centralized watch.Its more limit information found by the alarm block signal to AVC system and in running is received
Enter closed-loop process system, concentration, outstanding problem are analyzed, abnormal cause and solution are found out, to abnormality processing process
It is constantly improve, makes process flow complete in detail.
The technical scheme is that provide it is a kind of using automatic voltage control system to the whole network reactive voltage state carry out
The method of centralized watch, it is characterized in that the method for the centralized watch includes:
One, reinforce Centralized Monitoring, carry out exception record:
To AVC system, the problem reinforces monitoring and record in operation, it is desirable that each value dispatcher is to AVC system
The timely involution of alarm block signal simultaneously records plant stand, time, locking information, processing mode and closed-loop case that alarm locking occurs
Carry out corresponding record；
The more limit information found in operation will also be handled in time, and carry out corresponding record, each value dispatcher is handing over
Same day AVC operating condition must be included in content of relieving when succeeding, and the progress of processed problem is included at closed loop in time
Reason；
Two, process flow, analysis abnormal cause are improved:
Specific process flow is all provided out to the different abnormal conditions being likely to occur, is advised to the problem of cannot handling on the same day
The program that constant current turns；Management and running center every month works out AVC and runs monthly magazine, analyzes concentration, outstanding problem, finds out different
Normal reason and solution, constantly improve abnormality processing process；
Three, the coordination of development portion border, solving practical problems:
It is related to the problem of non-scheduled profession, holds the coordination committee of each department of power supply company, organizes automation, power transformation, battalion
Xiao Deng department joint investigation, finds out the concrete reason of defect generation；And closed loop management is carried out according to defect management process.
Further, the assessment, early warning and decision-making technique make complete in detail all kinds of AVC defects having found
Standby process flow.
Specifically, the assessment, early warning and decision-making technique, strict implement defect elimination process flow, the of disfigurement discovery
One time judged the property of defect, is recorded；In time send operator and Automation Specialty personnel to scene one,
Secondary device is confirmed；The multiple problem occurred to concentration is timely analyzed, and exact cause is found out.
Specifically, the assessment, early warning and decision-making technique carry out tracking processing to temporary indelible defect, and
The portion Shi Kaizhan border is coordinated and producer's research cooperation, reinforces monitoring to the plant stand of existing defects, carries out manually adjusting intervention in time, protect
Grid operation data is demonstrate,proved not across limit value, improves the safety and economy of operation of power networks.
Specifically, the assessment, early warning and decision-making technique, carried out AVC by control centre and run monthly magazine, to every month
AVC and system operation data are summarized, and not found problem is searched；Defect is analyzed by long-term operation data；
Non- closed loop defect is made a record, tracking is reinforced；Aiming at the problem that existing on last stage, arrange the work weight of next stage properly
Point.
Compared with the prior art, the invention has the advantages that
1. using the technical program, concentration prison is carried out to power grid Nei Ge substation's on-load voltage regulating device and reactive-load compensation equipment
Control, unified management and on-line checking can greatly improve the voltage controlled level of dispatching of power netwoks or regulation person, mitigate pressure regulation repeatedly
Labor intensity improves idle, voltage management efficiency.
2. using the technical program, the Operating ettectiveness of AVC system is improved, the control water of voltage power-less is further improved
It is flat, it is ensured that power network safety operation ensure that the qualification of interdependent node voltage and power factor, farthest reduce
Transmission that route is idle reduces power grid active loss because of caused by unnecessary reactive power flow.
3. by using the technical program, regulation center AVC application level has a raising of matter, supply voltage qualification rate and
Idle controlled level has also reached new height.
Detailed description of the invention
Fig. 1 is existing AVC control flow chart schematic diagram；
Fig. 2 is AVC defect processing flow diagram of the present invention.
Specific embodiment
The present invention will be further described with reference to the accompanying drawing.
Technical solution of the present invention provide it is a kind of using automatic voltage control system to the whole network reactive voltage state carry out
The method of centralized watch, invention are:
One, reinforce Centralized Monitoring, carry out exception record
To AVC system, the problem reinforces monitoring and record in operation, it is desirable that each value dispatcher is to AVC system
The timely involution of alarm block signal simultaneously records plant stand, time, locking information, processing mode and closed-loop case that alarm locking occurs
Carry out corresponding record.The more limit information found in operation will also be handled in time, and carry out corresponding record.Each value scheduling
Member AVC operating condition must be included in content of relieving by the day of when relieving, and carry out timely closed loop to processed problem.
Two, process flow, analysis abnormal cause are improved
Specific process flow is all defined to the different abnormal conditions being likely to occur, is advised to the problem of cannot handling on the same day
The program of circulation is determined.Center every month works out AVC and runs monthly magazine, analyzes concentration, outstanding problem, finds out abnormal cause
And solution, abnormality processing process is constantly improve.
Three, the coordination of development portion border, solving practical problems
It is related to the problem of non-scheduled profession, holds interagency coordination meeting, the departments such as tissue automation, power transformation, marketing connection
Investigation is closed, the concrete reason of defect generation is found out；And closed loop management is carried out according to defect management process.
The innovative point of technical solution of the present invention and the breakthrough of acquirement:
Perfect defect management process:
Detailed complete process flow is formulated, has seen institute in Fig. 2 for all kinds of AVC defects having found in certain regulation center
Show, since it is general format and expression method in the industry, those skilled in the art understands that its is described interior in which can have no contrary opinion
Appearance and working principle, therefore this will not be detailed here.
Strict implement defect elimination process flow judges the property of defect in the first time of disfigurement discovery, is recorded；And
When send operator and Automation Specialty personnel to confirm live first and second equipment；Occur to concentration multiple
Property problem is timely analyzed, and exact cause is found out.
To temporary indelible defect, tracking processing is carried out, timely development portion border is coordinated and producer's research cooperation, right
The plant stands of existing defects reinforces monitoring, carries out manually adjusting interventions in time when necessary, guarantee grid operation data not across limit value,
Improve the safety and economy of operation of power networks.
AVC operation monthly magazine is carried out, summarizes to AVC every month and system operation data, searches not found problem；It is logical
Long-term operation data is crossed to analyze defect；Non- closed loop defect is made a record, tracking is reinforced；For existing on last stage
The problem of, the next stage of arranging properly focus.
Situations such as and abnormal obliteration out-of-limit for the number occurred in AVC operational process, by busbar voltage, main transformer without
The operation datas curves such as function, on-load voltage regulation gear are analysed and compared, and determine the real causes of AVC defect.
The reason of causing AVC defect substantially has at following 4 points: 1, primary equipment failure；2, secondary device failure；3, remote signalling
Telemetering failure；4, AVC control strategy is not applicable.Wherein, it is according to system correlation operation data optimization of profile AVC control strategy
The difficult point of AVC defect elimination processing, table 1 are AVC relevant control mode.
1 AVC control mode of table
Original control strategy is power factor calculating method, is converted into nothing by power factor limit value and current active power
Function control limit will cause main transformer tap changer and act prior to capacitor switch in some cases, cause reactive compensation insufficient
Or overcompensation；And main transformer tap changer frequent movement causes to be latched.
Selection takes fixed reactive limit value method that can preferentially throw in the case where idle insufficient or excessive in this case
Capacitor is jumped, operating parameter is made to restore normal range (NR).
The implementation of technical solution of the present invention improves AVC system so that the operational failure of AVC system is greatly lowered extremely
The Operating ettectiveness of system further improves the controlled level of voltage power-less, it is ensured that power network safety operation ensure that correlation
The qualification of node voltage and power factor farthest reduces the idle transmission of route, reduces power grid because unnecessary idle
Active loss caused by trend.
In addition, carrying out Centralized Monitoring, unified management to power grid Nei Ge substation's on-load voltage regulating device and reactive-load compensation equipment
And on-line checking, the labor intensity that can be greatly improved regulation person's voltage controlled level, mitigate pressure regulation repeatedly improve idle, electric
Press the efficiency of management.
It invention can be widely used in dispatching of power netwoks control field.
Claims (5)
1. a kind of method for carrying out centralized watch to the whole network reactive voltage state using automatic voltage control system, it is characterized in that institute
The method for stating centralized watch includes:
One, reinforce Centralized Monitoring, carry out exception record:
To AVC system, the problem reinforces monitoring and record in operation, it is desirable that alarm of each value dispatcher to AVC system
The timely involution of block signal simultaneously records plant stand, time, locking information, processing mode and closed-loop case that alarm locking occurs and carries out
Corresponding record；
The more limit information found in operation will also be handled in time, and carry out corresponding record, each value dispatcher is relieving
Same day AVC operating condition is included in content of relieving by Shi Bixu, and carries out being included in closed-loop process in time to processed problem；
Two, process flow, analysis abnormal cause are improved:
Specific process flow is all provided out to the different abnormal conditions being likely to occur, regulation the problem of cannot handling on the same day is flowed
The program turned；Management and running center every month works out AVC and runs monthly magazine, analyzes concentration, outstanding problem, finds out abnormal former
Cause and solution constantly improve abnormality processing process；
Three, the coordination of development portion border, solving practical problems:
It is related to the problem of non-scheduled profession, holds the coordination committee of each department of power supply company, tissue automation, power transformation, marketing etc.
Department's joint investigation, finds out the concrete reason of defect generation；And closed loop management is carried out according to defect management process.
2. described in accordance with the claim 1 carry out centralized watch to the whole network reactive voltage state using automatic voltage control system
Method, it is characterized in that the assessment, early warning and decision-making technique make complete in detail all kinds of AVC defects having found
Process flow.
3. carrying out centralized watch to the whole network reactive voltage state using automatic voltage control system according to claim 2
Method, it is characterized in that the assessment, early warning and decision-making technique, strict implement defect elimination process flow, the first of disfigurement discovery
Time judges the property of defect, is recorded；Send operator and Automation Specialty personnel to scene one, two in time
Secondary device is confirmed；The multiple problem occurred to concentration is timely analyzed, and exact cause is found out.
4. carrying out centralized watch to the whole network reactive voltage state using automatic voltage control system according to claim 2
Method, it is characterized in that the assessment, early warning and decision-making technique carry out tracking processing, in time to temporary indelible defect
Development portion border is coordinated and producer's research cooperation, reinforces monitoring to the plant stand of existing defects, carries out manually adjusting intervention in time, guarantee
Grid operation data improves the safety and economy of operation of power networks not across limit value.
5. carrying out centralized watch to the whole network reactive voltage state using automatic voltage control system according to claim 2
Method, it is characterized in that the assessment, early warning and decision-making technique, carried out AVC by control centre and run monthly magazine, to every month
AVC and system operation data are summarized, and not found problem is searched；Defect is analyzed by long-term operation data；
Non- closed loop defect is made a record, tracking is reinforced；Aiming at the problem that existing on last stage, arrange the work weight of next stage properly
Point.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811290056.XA CN109347116B (en) | 2018-10-31 | 2018-10-31 | Method for centralized monitoring of reactive voltage state of whole network by adopting automatic voltage control system |
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| CN201811290056.XA CN109347116B (en) | 2018-10-31 | 2018-10-31 | Method for centralized monitoring of reactive voltage state of whole network by adopting automatic voltage control system |
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| CN109347116B CN109347116B (en) | 2021-04-16 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110601214A (en) * | 2019-10-30 | 2019-12-20 | 国网浙江浦江县供电有限公司 | Distribution network reactive voltage governance monitoring system |
| CN111817308A (en) * | 2020-06-08 | 2020-10-23 | 广东电网有限责任公司 | AVC-based reactive power regulation effectiveness judgment method and system |
-
2018
- 2018-10-31 CN CN201811290056.XA patent/CN109347116B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110601214A (en) * | 2019-10-30 | 2019-12-20 | 国网浙江浦江县供电有限公司 | Distribution network reactive voltage governance monitoring system |
| CN111817308A (en) * | 2020-06-08 | 2020-10-23 | 广东电网有限责任公司 | AVC-based reactive power regulation effectiveness judgment method and system |
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| CN109347116B (en) | 2021-04-16 |
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