CN103036232A - Vibration-area-crossing method of automatic gain control (AGC) system for different water heads in hydroelectric plant - Google Patents
Vibration-area-crossing method of automatic gain control (AGC) system for different water heads in hydroelectric plant Download PDFInfo
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- CN103036232A CN103036232A CN2012105360112A CN201210536011A CN103036232A CN 103036232 A CN103036232 A CN 103036232A CN 2012105360112 A CN2012105360112 A CN 2012105360112A CN 201210536011 A CN201210536011 A CN 201210536011A CN 103036232 A CN103036232 A CN 103036232A
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
- Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/222—Demand response systems, e.g. load shedding, peak shaving
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Abstract
The invention belongs to the field of power system automatic control and relates to a vibration-area-crossing method of an automatic gain control (AGC) system for different water heads in a hydroelectric plant. The method includes the steps of drawing functional relationship curves between each set water head and vibration areas, building up data structure models which comprise set current capacity, operation top and bottom limitation of the whole plant, and top and bottom limitation assignment value of the each vibration area according to functional relationships between the water heads and the vibration areas, utilizing the operation top and bottom limitation of the whole plant uploaded by the hydroelectric plant and boundary telemetry information of the individual vibration area to build up hydroelectric plant dynamic operation interval graphs based on the telemetry information, inputting collected data of the water heads manually or automatically, and using control modes to enable sets to reasonably avoid distribution load processing of the vibration areas. The method enables the hydroelectric generating sets to cross distribution load of the vibration areas according to the different water heads, and fully improves operation states of the sets to enable the sets to operate stably, safely and efficiently.
Description
Technical field
The invention belongs to the Automation of Electric Systems control field, relate to vibrating area is crossed over by the AGC system under the different heads in hydroelectric plant method.
Background technology
Automatic generation control (AGC) is a critical function in the modern power network control, also is important closed loop control function in the energy management control system (EMS).The particular content of hydroelectric plant's automatic generation control is: according to the requirement of reservoir upland water amount or electric power system, consider the operation restrictive condition of power plant and unit, under the prerequisite that guarantees safe operation of power plant, take economical operation as principle, determine Power Plant operation number of units, the combination of operating unit and the sharing of load between unit.When finishing these functions, avoid simultaneously causing the frequent starting and stopping of unit owing to power system load fluctuates in short-term.Power plant's main equipment is stable, the automatic control equipment reliable in action is the precondition that automatic generation control normally puts into operation.Dissimilar hydroelectric plants considers Liquified gas tanker separately, and the automatic generation control function of realization is not quite similar, but generally comprises following several: 1) move by given load curve mode.2) by given load method operation.3) automatic frequency adjustment (AFC).4) low frequency self-starting and high frequency subtract and exert oneself.5) economical operation.Its core content is the economical operation of unit in the power plant.
What the AGC system of hydroelectric plant adopted at present is load sharing, head does not participate in load adjustment, if given certain load, unit vibration district just behind sharing of load, to move at vibrating area for a long time, do not possess and automatically avoid vibrating function, the scheduling of therefore only being related heavily divides load or withdraws from the AGC operation with closed ring.
Summary of the invention
The purpose of this invention is to provide the method for a kind of AGC system leap vibrating area under the different heads in hydroelectric plant, can make Hydropower Unit pass through the vibrating area distribution load according to different heads, substantially improve operating states of the units, make the set steady safe and highly efficient operation.
Realize that the technical scheme that above-mentioned purpose of the present invention is taked comprises the following steps:
1. draw out each unit head and vibrating area function relation curve;
2. set up full factory data structuring model according to head and vibrating area functional relation, comprise that unit is current to exert oneself, full factory operation bound, each vibrating area bound limit assignment writes computer program with this functional relation and calculates;
3. the full factory operation bound of utilizing the hydroelectric plant to upload, individual vibrating area border telemetry intelligence (TELINT) is set up the hydroelectric plant's dynamic operation interval graph based on telemetry intelligence (TELINT), and the input computer is processed;
4. manual/auto to computer input head collection numerical value, computer makes the machine reasonable set avoid the vibrating area distribution load to hydroelectric plant's controller output control model and processes.
In technique scheme of the present invention, the controller of hydroelectric plant participates in Region control in the fixed base point mode, and after input head sampled data, controller distributed the load of vibrating area voluntarily; When actual exerting oneself do not enter vibrating area, target is exerted oneself when falling into vibrating area, and target is exerted oneself to be limited near the actual side vibrating area edge of exerting oneself; When target is exerted oneself when passing through vibrating area, basic point pattern and regional regulatory demand according to controller judge whether to allow the hydroelectric plant to cross over vibrating area, allow crossing over then exerts oneself target is decided to be basic point power, crosses over simultaneously vibrating area, otherwise the vibration edge that target is exerted oneself and is limited in the current side of exerting oneself.
The above-mentioned step of the present invention 1. in, the vibration area under each unit head should be write respectively computer program and carry out logic and judge, thereby reach the reasonable distribution load.
The above-mentioned step of the present invention 4. in, in either case, only select hydroelectric plant's controller to cross over vibrating area at every turn, if selected to cross over hydroelectric plant's controller of vibrating area leap process that is not over yet last time, will reset and put the head image data.
Hydroelectric plant's unit is crossed in the vibrating area process, and unit is retrained by the maximum luffing that allows of order, and uncontrolled device is regulated the restriction of step-length, to guarantee fast and safely to cross over vibrating area.
Useful technique effect of the present invention is: changed traditional AGC static vibration district modeling pattern, at the dynamic vibration section model of AGC system made towards full plant controller, it is interval to generate observable hydroelectric plant active power dynamic operation, grasp in real time the interval regulated and the oscillating region of hydroelectric plant, the concrete crossing method of hydroelectric plant's vibrating area is proposed, unit output is avoided between the vibrating area of the hydraulic turbine effectively, and machine is fast and safely crossed over vibrating area when appropriate, take full advantage of the adjusting advantage of Hydropower Unit, unit safety is efficiently moved.
Description of drawings
Fig. 1 is * * hydroelectric station #1 unit head and vibrating area function relation curve.
Fig. 2 is * * hydroelectric station # 2 unit head and vibrating area function relation curve.
Fig. 3 is * * hydroelectric station #3 unit head and vibrating area function relation curve.
Fig. 4 is that vibrating area command assignment test closed loop test curve passes through in full factory.
Fig. 5 is scheduling mode command assignment closed loop test curve.
Embodiment
The static check of AGC loop of power circuit:
According to code requirement, unit and the meritorious regulating loop of AGC are checked, the meritorious regulating loop of the unit AGC of XX hydroelectric plant is designed to: when the meritorious closed-loop adjustment of AGC drops into be, speed regulator is as the actuating mechanism controls stator, stator control flow is adjusted unit output, and meritorious closed loop adjustment is realized by supervisory control system AGC power adjustments loop.
The static check of frequency difference loop:
According to code requirement, unit frequency modulation loop is checked, XX hydroelectric plant unit frequency adjustment loop design is: unit frequency modulation loop dead band 0.05Hz, difference coefficient 4%, be limited to 50.2Hz on the primary frequency modulation, primary frequency modulation and AGC adopt overlaying relation, namely when mains frequency exceeds the adjusting dead band, the action of speed regulator response primary frequency modulation, monitor simultaneously AGC real power control loop according to frequency difference at the meritorious increment of exerting oneself of AGC set point stack primary frequency modulation, guarantee that primary frequency modulation action active power adjustment amount is correct.
Upload scheduling signals and the dispatching down distributing signal is checked.
AGC remote signalling/telemetry intelligence (TELINT):
?。
AGC remote regulating/remote information:
Unit AGC drops into:
Unit drops into the condition that the AGC function needs: unit is meritorious can far be controlled, and meritorious PID regulates and drops into, the LCU fault-free, and active power measurement is normal, and governing system is without catastrophe failure.
Unit AGC withdraws from:
Unit withdraws from the condition of AGC: unit is meritorious can not far be controlled, and the meritorious PID of unit regulates and withdraws from, the LCU for generator set fault, and the set state sudden change, any condition such as active power measurement fault satisfies unit and will withdraw from AGC.
The full AGC of factory drops into:
The full AGC of factory normally drops into condition: unit commitment AGC is arranged, and system frequency is normal, and the unit accident free is normal with dispatching communication when AGC is far controlled, each LCU fault-free, and the meritorious set point of full factory and the real deviation of sending out are in full factory adjusting dead band.
The full AGC of factory withdraws from:
The full AGC of factory drops into, and test is participated in AGC without unit, simulating grid frequency fault, Power Plant Accident, the AGC control when scheduling with the dispatching communication fault, the sudden change of generating attitude set state causes AGC to withdraw from the situations such as the attitude of generating electricity LCU for generator set fault.
Single unit passes through the test of vibrating area command assignment.
Under three kinds of different heads, test different heads lower three unit vibration differences, record test data such as following tables.
Single unit command assignment open-loop test table
。
Annotate: the #1 unit is real, and to send out power be 0 to be that meaning is identical in the followed sheet because unit is being shut down attitude.
Single unit command assignment open-loop test table:
Single unit command assignment open-loop test table:
Many units pass through the test of vibrating area command assignment:
#2, #3 unit drop into AGC simultaneously, test in the situation of the corresponding different vibrating areas of different heads, and record data are such as table.
Many unit command assignment open-loop test tables:
Many unit command assignment open-loop test tables:
The open-loop test of vibrating area command assignment is passed through by full factory:
Under current head, #1, #2, #3 unit all drop into AGC, pass through vibrating area test record such as following table.
Full factory command assignment open-loop test table:
The closed loop test of vibrating area command assignment is passed through by full factory
Full factory command assignment closed loop test table:
The closed loop test of scheduling mode command assignment:
The AGC function drops into to economize transfers closed loop mode, by the long-range instruction of full factory, the observation unit command assignment situation of issuing of scheduling.Test data sheet situation such as following table, test curve such as accompanying drawing.
Scheduling mode command assignment closed loop test table:
Claims (5)
1. vibrating area is crossed over by the AGC system under the different heads in hydroelectric plant a method is characterized in that comprising the following steps:
1. draw out each unit head and vibrating area function relation curve;
2. set up full factory data structuring model according to head and vibrating area functional relation, comprise that unit is current to exert oneself, full factory operation bound, each vibrating area bound limit assignment writes computer program with this functional relation and calculates;
3. the full factory operation bound of utilizing the hydroelectric plant to upload, individual vibrating area border telemetry intelligence (TELINT) is set up the hydroelectric plant's dynamic operation interval graph based on telemetry intelligence (TELINT), and the input computer is processed;
4. manual/auto to computer input head collection numerical value, computer avoids the machine reasonable set to hydroelectric plant's controller output control model.
2. the AGC according to claim 1 system method of under the different heads in hydroelectric plant, crossing over vibrating area, it is characterized in that: the controller of hydroelectric plant participates in Region control in the fixed base point mode, after input head sampled data, controller distributed the load of vibrating area voluntarily; When actual exerting oneself do not enter vibrating area, target is exerted oneself when falling into vibrating area, and target is exerted oneself to be limited near the actual side vibrating area edge of exerting oneself; When target is exerted oneself when passing through vibrating area, basic point pattern and regional regulatory demand according to controller judge whether to allow the hydroelectric plant to cross over vibrating area, allow crossing over then exerts oneself target is decided to be basic point power, crosses over simultaneously vibrating area, otherwise the vibration edge that target is exerted oneself and is limited in the current side of exerting oneself.
3. the AGC according to claim 2 system method of under the different heads in hydroelectric plant, crossing over vibrating area, it is characterized in that: step 1. in, vibration area under each unit head should be write respectively computer program and carry out the logic judgement, thereby reach the reasonable distribution load.
4. the AGC according to claim 2 system method of under the different heads in hydroelectric plant, crossing over vibrating area, it is characterized in that: step 4. in, in either case, only select hydroelectric plant's controller to cross over vibrating area at every turn, the leap process if hydroelectric plant's controller of selection leap last time vibrating area is not over yet resets the head image data.
5. vibrating area is crossed over by AGC according to claim 2 system under the different heads in hydroelectric plant, it is characterized in that: hydroelectric plant's unit is crossed in the vibrating area process, and unit is retrained by the maximum luffing that allows of order.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105870979A (en) * | 2016-05-19 | 2016-08-17 | 华能澜沧江水电股份有限公司 | Hydropower station AGC active allocation method based on unit commitment output model |
| CN106016513A (en) * | 2016-04-29 | 2016-10-12 | 中国水利水电建设工程咨询中南有限公司 | Damp-proof anti-condensation method for hydropower plant |
| CN108206546A (en) * | 2017-12-29 | 2018-06-26 | 安德里茨（中国）有限公司 | The method that unit passes through vibrating area is adjusted in AGC system |
| CN109854438A (en) * | 2019-03-07 | 2019-06-07 | 贵州电网有限责任公司 | A kind of continuous working period control method in generating set threshold vibration area |
| CN113809759A (en) * | 2021-09-14 | 2021-12-17 | 中国长江电力股份有限公司 | Method for enabling single-vibration-area hydroelectric generating set to rapidly pass through vibration area through AGC |
| CN114069859A (en) * | 2021-11-12 | 2022-02-18 | 许继集团有限公司 | Coordinated power generation control system of new energy power station hybrid distributed machine group |
| CN114243715A (en) * | 2021-11-04 | 2022-03-25 | 南瑞集团有限公司 | Method and system for testing hydropower station AGC control device |
| CN116826771A (en) * | 2023-08-29 | 2023-09-29 | 华能澜沧江水电股份有限公司 | Load adjustment matching method for large hydroelectric generating set crossing vibration region |
| CN117236159A (en) * | 2023-08-08 | 2023-12-15 | 中国长江电力股份有限公司 | Method for adjusting runout working condition of hydropower station unit based on radial basis function neural network model |
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| CN102684189A (en) * | 2012-05-15 | 2012-09-19 | 国网电力科学研究院 | Automatic gain control (AGC) method for hydroelectric power station surge shaft |
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Patent Citations (3)
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| JP2002276527A (en) * | 2001-03-21 | 2002-09-25 | Tokyo Electric Power Co Inc:The | Governing control device of hydraulic power plant, and governing control method of hydraulic power plant |
| CN101917015A (en) * | 2010-07-20 | 2010-12-15 | 国电南瑞科技股份有限公司 | Hydraulic power plant vibration region crossing method based on master station AGC system |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106016513A (en) * | 2016-04-29 | 2016-10-12 | 中国水利水电建设工程咨询中南有限公司 | Damp-proof anti-condensation method for hydropower plant |
| CN105870979A (en) * | 2016-05-19 | 2016-08-17 | 华能澜沧江水电股份有限公司 | Hydropower station AGC active allocation method based on unit commitment output model |
| CN105870979B (en) * | 2016-05-19 | 2018-08-21 | 华能澜沧江水电股份有限公司 | A kind of active distribution method of AGC of Hydropower Stations based on Unit Combination output model |
| CN108206546A (en) * | 2017-12-29 | 2018-06-26 | 安德里茨（中国）有限公司 | The method that unit passes through vibrating area is adjusted in AGC system |
| CN109854438A (en) * | 2019-03-07 | 2019-06-07 | 贵州电网有限责任公司 | A kind of continuous working period control method in generating set threshold vibration area |
| CN113809759B (en) * | 2021-09-14 | 2023-08-08 | 中国长江电力股份有限公司 | Method for single vibrating area hydroelectric generating set to quickly pass through vibrating area through AGC |
| CN113809759A (en) * | 2021-09-14 | 2021-12-17 | 中国长江电力股份有限公司 | Method for enabling single-vibration-area hydroelectric generating set to rapidly pass through vibration area through AGC |
| CN114243715A (en) * | 2021-11-04 | 2022-03-25 | 南瑞集团有限公司 | Method and system for testing hydropower station AGC control device |
| CN114243715B (en) * | 2021-11-04 | 2023-06-20 | 南瑞集团有限公司 | Hydropower station AGC control device testing method and system |
| CN114069859A (en) * | 2021-11-12 | 2022-02-18 | 许继集团有限公司 | Coordinated power generation control system of new energy power station hybrid distributed machine group |
| CN114069859B (en) * | 2021-11-12 | 2024-05-10 | 许继集团有限公司 | Coordinated power generation control system of new energy power station hybrid distributed cluster |
| CN117236159A (en) * | 2023-08-08 | 2023-12-15 | 中国长江电力股份有限公司 | Method for adjusting runout working condition of hydropower station unit based on radial basis function neural network model |
| CN117236159B (en) * | 2023-08-08 | 2024-07-16 | 中国长江电力股份有限公司 | Method for adjusting runout working condition of hydropower station unit based on radial basis function neural network model |
| CN116826771A (en) * | 2023-08-29 | 2023-09-29 | 华能澜沧江水电股份有限公司 | Load adjustment matching method for large hydroelectric generating set crossing vibration region |
| CN116826771B (en) * | 2023-08-29 | 2023-11-28 | 华能澜沧江水电股份有限公司 | Load adjustment matching method for large hydroelectric generating set crossing vibration region |
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Application publication date: 20130410 |