CN107061132A - A kind of power station speed regulator power closed-loop adjustment improves power adjusting speed and the regulating system of degree of regulation - Google Patents
A kind of power station speed regulator power closed-loop adjustment improves power adjusting speed and the regulating system of degree of regulation Download PDFInfo
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- CN107061132A CN107061132A CN201611162477.5A CN201611162477A CN107061132A CN 107061132 A CN107061132 A CN 107061132A CN 201611162477 A CN201611162477 A CN 201611162477A CN 107061132 A CN107061132 A CN 107061132A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B15/00—Controlling
- F03B15/02—Controlling by varying liquid flow
- F03B15/04—Controlling by varying liquid flow of turbines
- F03B15/06—Regulating, i.e. acting automatically
- F03B15/08—Regulating, i.e. acting automatically by speed, e.g. by measuring electric frequency or liquid flow
- F03B15/12—Regulating, i.e. acting automatically by speed, e.g. by measuring electric frequency or liquid flow with retroactive action
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
- F03B3/16—Stators
- F03B3/18—Stator blades; Guide conduits or vanes, e.g. adjustable
- F03B3/183—Adjustable vanes, e.g. wicket gates
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
A kind of power station speed regulator power closed-loop adjustment that the present invention is provided improves power adjusting speed and the regulating system of degree of regulation；Including monitoring system, control unit and speed regulator；The power regulation functions that the present invention is possessed using speed regulator system itself, the direct action mechanism adjusted in view of speed regulator as the power of the assembling unit, its governing response speed and degree of regulation are superior to monitoring regulation, therefore speed regulator is run using power mode, load setting is gone out into mode by mould by monitoring LCU and delivers to speed regulator, in speed regulator formation power closed loop, by speed regulator completion power of the assembling unit regulation, due to the different caused defects that power is out-of-limit or regulated quantity is inadequate of head during eliminating primary frequency modulation action：Regulating command need to improve power adjusting speed and degree of regulation, it is to avoid because regulations speed is unsatisfactory for grid requirements and is examined, improve enterprise's generating efficiency by multiple tracks conversion when speed regulator power closed-loop adjustment avoids monitoring closed loop regulation.
Description
Technical field
The present invention relates to the tune that a kind of power station speed regulator power closed-loop adjustment improves power adjusting speed and degree of regulation
Section system.
Background technology
Due to mains frequency fluctuation frequently, so speed regulator enters primary frequency modulation also very frequently, primary frequency modulation and power
Regulation it is conflicting, easily induce unit load fluctuation, primary frequency modulation act during due to the different meeting of head caused by
Power is out-of-limit or regulated quantity is inadequate.
The content of the invention
Adjusted in order to solve the above technical problems, improving power the invention provides a kind of power station speed regulator power closed-loop adjustment
Save speed and the regulating system of degree of regulation.
The present invention is achieved by the following technical programs.
A kind of power station speed regulator power closed-loop adjustment that the present invention is provided improves power adjusting speed and degree of regulation
Regulating system；Including monitoring system, control unit and speed regulator；
The monitoring system receives AGC receiver ports and artificial guidance panel, and the signal received is transferred into control
Unit processed；
Described control unit receives the regulating command that monitoring system is issued, and order is converted into analog quantity and is handed down to speed governing control
Device processed, while the power value signal for also receiving speed setting controller feedback is transferred to monitoring system；
The analog quantity of the speed regulator reception control unit simultaneously carries out PID regulation processing, then adjusts guide vanes of water turbine
Aperture, and guide vane opening is fed back into control unit.
The speed regulator enables power adjusting pattern and retains former aperture pattern, and operations staff selects to adjust mould as needed
Formula is aperture regulation or power adjusting, and monitoring system sends out corresponding control signal to speed regulator control according to the regulative mode of selection
Device, speed regulator controller is switched over according to monitor command between power adjusting pattern and aperture regulation pattern.
Speed regulator power target value is that power gives and the primary frequency modulation amount of superposition under the power adjusting pattern；Frequency departure
Dead band, real hair power is the amount of superposition of power set-point and primary frequency modulation actuating quantity；Frequency is returned in dead band, and real hair power is upper
The given power that position machine is issued, response AGC instruction change.
Speed regulator monitoring system under aperture pattern persistently sends out given value signal active to speed regulator, and each
Hair " activates power to give " signal to speed regulator so that new setting value comes into force in speed regulator side automatically after set point change.Adjusting
Under fast device power closed-loop adjustment pattern, monitoring system no longer exports regulation pulse signal, is sent by speed regulator system according to monitoring
The active settings of 4 lasting~20mA and active real signal carry out power closed-loop adjustment.
During power adjusting pattern frequency modulation action next time, hair power is that power set-point and primary frequency modulation are dynamic to unit in fact
Make superposition amount, frequency is returned in dead band, response AGC instruction change, real hair power is that the power that host computer is issued gives.
If the given input of power is faulty during the power mode carrying row, speed regulator is automatically cut into aperture pattern fortune
OK, monitoring system switches corresponding control mode according to the mode signal of speed regulator.
The beneficial effects of the present invention are：The power regulation functions possessed using speed regulator system itself, it is contemplated that speed governing
The direct action mechanism that device is adjusted as the power of the assembling unit, its governing response speed and degree of regulation are superior to monitoring regulation, therefore
Speed regulator is run using power mode, and load setting is gone out into mode by mould by monitoring LCU delivers to speed regulator, is formed in speed regulator
Power closed loop, power of the assembling unit regulation is completed by speed regulator, is eliminated during primary frequency modulation is acted due to power caused by head difference
The inadequate defect of out-of-limit or regulated quantity,：Speed regulator power closed-loop adjustment avoid monitoring closed loop regulation when regulating command need by
Multiple tracks is changed, and improves power adjusting speed and degree of regulation, it is to avoid because regulations speed is unsatisfactory for grid requirements and is examined,
Improve enterprise's generating efficiency.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the flow chart of the present invention；
Fig. 3 is power closed-loop adjustment programme diagram of the present invention；
Embodiment
Be described further below technical scheme, but claimed scope be not limited to it is described.
A kind of power station speed regulator power closed-loop adjustment as shown in Figure 1 and Figure 2 improves power adjusting speed and degree of regulation
Regulating system；Including monitoring system, control unit and speed regulator；
The monitoring system receives AGC receiver ports and artificial guidance panel, and the signal received is transferred into control
Unit processed；
Described control unit receives the regulating command that monitoring system is issued, and order is converted into analog quantity and is handed down to speed governing control
Device processed, while the power value signal for also receiving speed setting controller feedback is transferred to monitoring system；
The analog quantity of the speed regulator reception control unit simultaneously carries out PID regulation processing, then adjusts guide vanes of water turbine
Aperture, and guide vane opening is fed back into control unit.
The speed regulator enables power adjusting pattern and retains former aperture pattern, and operations staff selects to adjust mould as needed
Formula is aperture regulation or power adjusting, and monitoring system sends out corresponding control signal to speed regulator control according to the regulative mode of selection
Device, speed regulator controller is switched over according to monitor command between power adjusting pattern and aperture regulation pattern.In monitoring system
3 impulse types of middle increase output signal, are defined as：Speed regulator power adjusting, throwing speed regulator aperture regulation, activation power is thrown to give
It is fixed.The first two signal is respectively used to the regulative mode of control selections speed regulator, and last, which outputs signal, is used to activate speed regulator
Side power set-point comes into force.
Speed regulator power target value is that power gives and the primary frequency modulation amount of superposition under the power adjusting pattern；Frequency departure
Dead band, real hair power is the amount of superposition of power set-point and primary frequency modulation actuating quantity；Frequency is returned in dead band, and real hair power is upper
The given power that position machine is issued, response AGC instruction change.
Speed regulator monitoring system under aperture pattern persistently sends out given value signal active to speed regulator, and each
Hair " activates power to give " signal to speed regulator so that new setting value comes into force in speed regulator side automatically after set point change.Adjusting
Under fast device power closed-loop adjustment pattern, monitoring system no longer exports regulation pulse signal, is sent by speed regulator system according to monitoring
The active settings of 4 lasting~20mA and active real signal carry out power closed-loop adjustment.Increase by 3 in monitoring system to open into letter
Number, it is defined as：Speed regulator is in power adjusting pattern, speed regulator in aperture regulation pattern.2 signals are used to showing and judging current
The practical adjustments pattern of speed regulator.Increase by 1 4~20mA simulated signal in monitoring system, be defined as：The active real hair value of unit.
Signal output to speed regulator system is used for speed regulator system power closed-loop adjustment.
During power adjusting pattern frequency modulation action next time, hair power is that power set-point and primary frequency modulation are dynamic to unit in fact
Make superposition amount, frequency is returned in dead band, response AGC instruction change, real hair power is that the power that host computer is issued gives.For with
Primary frequency modulation work is closed, under power closed loop mode, the active setting value for monitoring output only becomes with host computer AGC or artificial settings
Change, do not send out value changes with real, primary frequency modulation actuating quantity is superimposed to active setting value by speed regulator dynamic.
If the given input of power is faulty during the power mode carrying row, speed regulator is automatically cut into aperture pattern fortune
OK, monitoring system switches corresponding control mode according to the mode signal of speed regulator.To ensure to make during regulative mode switching
Into load fluctuation, no matter speed regulator is in aperture regulation pattern or power adjusting pattern, the active duty setting signal of monitoring system
Persistently it is output to speed regulator system.In speed regulator system power failure or in the case of monitoring itself active power measurement exception, regulation
Mode automatically switches to aperture regulation mode, and regulative mode is without automatically switching after fault-signal disappears, by operations staff
Optionally manual switching.
Embodiment 1,
1.1 powers of the assembling unit are changed to by speed regulator closed loop by monitoring closed loop, by speed regulator by aperture mode altering be power mould
Formula is run.
1.1.1 the electric parameter of change：
A machine aperture deviation evolutions are to proportionality coefficient, before changing：10, after changing：20.
B machine aperture deviation evolutions are to proportionality coefficient, before changing：5, after changing：20.
1.1.2 A owners match somebody with somebody zero point, before changing：10, after changing：2610.
1.1.3 B owners match somebody with somebody zero point, before changing：10, after changing：2610.
1.1.4 A acc powers are given measures zero point (newly-increased), after changing：2480, engineering zero point：0MW, measures gain：
9999, engineering gain：300
1.1.5 the demarcation of A acc powers feedback measures zero point (newly-increased), after changing：2019, engineering zero point：0MW, measurement increases
Benefit：9999, engineering gain：342
1.1.6 B acc powers are given measures zero point (newly-increased), after changing：2480, engineering zero point：0MW, measures gain：
9999, engineering gain：300
1.1.7B the demarcation of acc power feedback measures zero point (newly-increased), after changing：2019, engineering zero point：0MW, measures gain：
9999, engineering gain：342
1.2 increased modules：
1.2.1 analog quantity converter：
This increased analog quantity converter model：T1C3C-V24
Design parameter is：
Input signal：DC4——20mA
Output signal：DC4——20mA
1.2.2 it is main to match somebody with somebody fed power supplies plate：
This time increased master matches somebody with somebody fed power supplies plate model：SU10-24D12
Design parameter is：
Input signal：DC4——20mA
Output signal：DC4——20mA
1.3 speed regulator internal processes are changed：
Increase by 3 impulse types in monitoring system and output signal, be defined as：Speed regulator power adjusting, throwing speed regulator is thrown to open
Degree regulation, activation power give.The first two signal is respectively used to the regulative mode of control selections speed regulator, and last outputs letter
Number it is used to activate speed regulator side power set-point and come into force.Increase by 3 in monitoring system to open into signal, be defined as：Speed regulator is in work(
Rate shaping modes, speed regulator are in aperture regulation pattern.2 signals are used for the practical adjustments mould for showing and judging current speed regulator
Formula.Increase by 1 4~20mA simulated signal in monitoring system, be defined as：The active real hair value of unit.Signal output is to speed regulator system
Unite for speed regulator system power closed-loop adjustment.The aperture pattern that speed regulator DI increases are sent by LCU power mode switching command
Activation command is given with power, DO increases frequency mode, aperture mode feedback signal send monitoring LCU；
The improved experiment of 1.4 power closed loops：
1.4.1 speed regulator back panel wiring is finished, and has changed module；Monitoring back panel wiring is finished, and has changed module；Adjust
Fast device and monitoring wiring are finished, and have been carried out to point, are acted through experiment normal.
1.4.2 No. 1 machine governor switch machine time is tested.The available machine time measured is 19.47s, during shutdown
Between be 14.78s, and the tune of Dong Qing power plants governor switch machine time protect calculate setting valve be respectively 20 ± 1s, 14 ± 1s.Through
No. 1 machine governor switch machine time of overtesting is satisfied by requiring.
1.4.3 morning on December 27th, 2013, speed regulator carries out static failure simulated test.No. 1 machine of testing inspection is adjusted
Switching of the fast device between power mode and aperture pattern, operational mode switching, analog machine frequency broken string, power of alterating and direct current power-off and
Power signal broken string etc..Result of the test, which is met, to be required.
1.4.5 afternoon 15 on December 27th, 2013:00——19：50, No. 1 machine speed regulators carry out load test.Experiment
It has detected switching when No. 1 machine speed regulator is incorporated into the power networks between power mode and aperture pattern, operational mode switching, analog machine
Frequency broken string, power of alterating and direct current power-off and power signal broken string etc..Result of the test, which is met, to be required.
1.4.6 speed regulator has carried out the load disturbance under power mode.Experiment complete load disturbance amount for 10MW,
20MW, 30MW and 50MW test (the Load Regulation step-length of existing Dong Qing power plants speed regulator is 50MW).Wherein, A machines 50MW is born
Lotus disturbance the time be：21.5s, result of the test meets southern net Load Regulation requirement, and Load Regulation process is steady, without overshoot.
Complete the upset test that load variations amount is 50MW under aperture pattern again afterwards.Wherein, the A machines 50MW load disturbance times are：
Load disturbance under 31.2s, and power mode is more more stable than under aperture.
1.4.7 No. 1 unit AGC is put into, is exited just in grid-connected load carrying No. 3 units AGC functions, by changing
The loads of No. 3 units run under " aperture regulation " pattern examines the situation of change of No. 1 unit load.Experiment completes load
Disturbance quantity is 30MW and 50MW test.Wherein, the A machines 50MW load disturbance times are：20.1s, it is negative that result of the test meets south net
Lotus regulation requires that Load Regulation process is steady, without overshoot.It is 50MW to complete load variations amount under aperture pattern again afterwards
Upset test.Wherein, the A machines 50MW load disturbance times are：Load disturbance under 30s, and power mode is more steady than under aperture
It is fixed.
1.4.8 No. 1 unit has been carried out under power mode, and unit is risen to experiment (load increase and decrease step at full capacity by 0 load
A length of 50MW).No. 1 unit is under power mode during load up, and Load Regulation is stable, without overshoot, is not sent out in process of the test
The existing situation of automatic load down.Whole test period is 223.5s.After rising at full capacity, load is smoothly down to 0 again, whole examination
The time is tested for 264.5s.
1.4.9 No. 1 unit has been carried out under power mode, and unit is risen to experiment (load increase and decrease step at full capacity by 0 load
A length of 15MW), completing experiment of the unit from the increasing of 0 load to 220MW under aperture pattern again in addition, (load increases and decreases step-length
15MW and 50MW).All experiments are normal, smoothly achieve.There is no abnormal conditions in experiment.Compare by analysis,
Under power mode, during the on-load of identical step-length, the Load Regulation time of power mode is fast compared with aperture pattern, and load
Regulation process is more stablized than aperture regulation.
Claims (7)
1. a kind of power station speed regulator power closed-loop adjustment improves power adjusting speed and the regulating system of degree of regulation, its feature
It is：Including monitoring system, control unit and speed regulator；
The monitoring system receives AGC receiver ports and artificial guidance panel, and it is single that the signal received is transferred into control
Member；
Described control unit receives the regulating command that monitoring system is issued, and order is converted into analog quantity and is handed down to speed regulating control
Device, while the power value signal for also receiving speed setting controller feedback is transferred to monitoring system；
The analog quantity of the speed regulator reception control unit simultaneously carries out PID regulation processing, then adjusts the aperture of guide vanes of water turbine,
And guide vane opening is fed back into control unit.
2. a kind of power station speed regulator power closed-loop adjustment as claimed in claim 1 improves power adjusting speed and degree of regulation
Regulating system, it is characterised in that：The speed regulator enables power adjusting pattern and retains former aperture pattern, operations staff according to
It is aperture regulation or power adjusting to need selection shaping modes, and monitoring system sends out corresponding control signal according to the regulative mode of selection
To speed regulator controller, speed regulator controller is cut according to monitor command between power adjusting pattern and aperture regulation pattern
Change.
3. a kind of power station speed regulator power closed-loop adjustment as claimed in claim 2 improves power adjusting speed and degree of regulation
Regulating system, it is characterised in that：Speed regulator power target value is that power gives and primary frequency modulation under the power adjusting pattern
Superposition amount；Frequency departure dead band, real hair power is the amount of superposition of power set-point and primary frequency modulation actuating quantity；Frequency returns to dead band
Interior, real hair power is the given power that host computer is issued, response AGC instruction change.
4. a kind of power station speed regulator power closed-loop adjustment as claimed in claim 1 improves power adjusting speed and degree of regulation
Regulating system, it is characterised in that：Speed regulator monitoring system under aperture pattern persistently sends out given value signal active to adjusting
Fast device, and hair " activates power to give " signal to speed regulator so that new setting value is being adjusted automatically after each set point change
Come into force fast device side.Under speed regulator power closed-loop adjustment pattern, monitoring system no longer exports regulation pulse signal, by speed regulator system
Active set of the 4 lasting~20mA sent according to monitoring that unites carries out power closed-loop adjustment with active real signal.
5. a kind of power station speed regulator power closed-loop adjustment as claimed in claim 1 improves power adjusting speed and degree of regulation
Regulating system, it is characterised in that：During power adjusting pattern frequency modulation action next time, hair power is given for power in fact for unit
Value acts the amount of superposition with primary frequency modulation, and frequency is returned in dead band, and response AGC instruction change, real hair power issues for host computer
Power give.
6. a kind of power station speed regulator power closed-loop adjustment as claimed in claim 1 improves power adjusting speed and degree of regulation
Regulating system, it is characterised in that：If the given input of power is faulty during the power mode carrying row, speed regulator is cut automatically
For aperture mode operation, monitoring system switches corresponding control mode according to the mode signal of speed regulator.
7. a kind of power station speed regulator power closed-loop adjustment as claimed in claim 1 improves power adjusting speed and degree of regulation
Regulating system, it is characterised in that：The transmission function of speed regulator power adjusting is：
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1
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|---|---|---|---|
| CN201611162477.5A CN107061132B (en) | 2016-12-15 | 2016-12-15 | A kind of power station governor power closed-loop adjustment improves the regulating system of power regulation speed and degree of regulation |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109236553A (en) * | 2018-09-29 | 2019-01-18 | 东方电机控制设备有限公司 | A kind of overspeed protection and flow control methods for hydroenergy storage station |
| CN110970911A (en) * | 2019-12-13 | 2020-04-07 | 四川省电力工业调整试验所 | Control method for mutual superposition of AGC and primary frequency modulation in opening degree mode |
| CN112290563A (en) * | 2020-09-16 | 2021-01-29 | 大唐水电科学技术研究院有限公司 | AGC logic superposition method for primary frequency modulation and monitoring system |
| CN112523927A (en) * | 2020-12-07 | 2021-03-19 | 中国长江电力股份有限公司 | Control method and system combining closed-loop and open-loop control of opening analog quantity of guide vane |
| CN112610399A (en) * | 2020-12-07 | 2021-04-06 | 中国长江电力股份有限公司 | Control method and system combining guide vane opening analog quantity closed loop control and segmented open loop control |
| CN112610398A (en) * | 2020-12-07 | 2021-04-06 | 中国长江电力股份有限公司 | Control method and system combining guide vane opening degree analog quantity variable integral closed loop and segmented open loop control |
| CN113013897A (en) * | 2021-03-09 | 2021-06-22 | 国网四川综合能源服务有限公司四川电力工程分公司 | Hydroelectric generating set guide vane mechanical dead zone compensation method and device |
| CN114396353A (en) * | 2021-12-18 | 2022-04-26 | 华能澜沧江水电股份有限公司 | Method and system for judging power oscillation of speed regulator of water turbine |
| CN114421478A (en) * | 2021-12-28 | 2022-04-29 | 华能澜沧江水电股份有限公司 | Closed-loop control method for power of speed regulator of giant hydropower plant |
| CN114810469A (en) * | 2020-12-07 | 2022-07-29 | 中国长江电力股份有限公司 | Control system combining guide vane opening analog quantity segmented open-loop control and variable parameter PID (proportion integration differentiation) closed-loop control of speed regulator |
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