CN204536761U - Generator excitation control system simulation device - Google Patents
Generator excitation control system simulation device Download PDFInfo
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- CN204536761U CN204536761U CN201520250607.5U CN201520250607U CN204536761U CN 204536761 U CN204536761 U CN 204536761U CN 201520250607 U CN201520250607 U CN 201520250607U CN 204536761 U CN204536761 U CN 204536761U
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- 230000005284 excitation Effects 0.000 title claims abstract description 72
- 238000004088 simulation Methods 0.000 title claims abstract description 33
- 239000003381 stabilizer Substances 0.000 claims abstract description 14
- 230000000052 comparative effect Effects 0.000 claims description 29
- 206010003830 Automatism Diseases 0.000 claims description 18
- 230000001965 increasing effect Effects 0.000 abstract description 6
- 230000001939 inductive effect Effects 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000005389 magnetism Effects 0.000 abstract 1
- 206010068052 Mosaicism Diseases 0.000 description 2
- 238000005094 computer simulation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008447 perception Effects 0.000 description 2
- 210000003765 sex chromosome Anatomy 0.000 description 2
- 238000013016 damping Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
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Abstract
A generator excitation control system simulator is provided with a generator excitation regulator simulator, an excitation system power unit simulator, a generator and a power system simulator. The excitation regulator simulator is provided with an automatic Voltage controller AVR (automatic Voltage regulator), an over-excitation limiter, an under-excitation limiter, a Vocal-Hertz limiter, a stator current limiter and a power system stabilizer. The automatic voltage control AVR is provided with a basic quantity calculator, a comprehensive comparator, an adder and a magnetism increasing and decreasing comprehensive calculator. The over-excitation limiter is provided with an inverse time limit curve calculator and an excitation current control value calculator. The under-excitation limiter is provided with a limit curve calculator and an under-excitation output calculator. The volt-hertz limiter is provided with a frequency-voltage comparator and an overexcitation output calculator. The stator current limiter is provided with an inductive stator overcurrent calculator and a capacitive stator overcurrent calculator. The simulation device can realize accurate simulation of the control characteristics of the generator excitation system.
Description
Technical field
The utility model relates to technical field of electric power, particularly relates to a kind of Excitation Controller simulator.
Background technology
Electrical network is under some specific run operating mode and fault, there is system voltage stabilizes sex chromosome mosaicism, such as, there is various direct current locking fault under straight-flow system sending end islet operation, significantly increasing of voltage can be caused, must prejudge by simulation analysis the voltage stabilization sex chromosome mosaicism that electrical network may face in these cases.And in these specific run situations, the exciter control system characteristic of Network Voltage Stability characteristic and generator is closely bound up, the modeling comparison of conventional emulation often for excitation system is rough, accurate not for excitation system control characteristic simulation result, have impact on power grid stability analysis.
Therefore, not enough for prior art, provide a kind of can the device of accurate analog generator excitation control characteristic very necessary.
Summary of the invention
The purpose of this utility model is avoid the deficiencies in the prior art part and provide Excitation Controller simulator, by this simulator, can realize the accurate simulation to excitation system control characteristic, has the accurate feature of simulation result.
The purpose of this utility model is realized by following technical measures.
A kind of Excitation Controller simulator, be provided with automatic excitation adjustor of generator emulator, excitation system power unit emulator, generator and electric system simulation device, described generator is connected with the input end of described automatic excitation adjustor of generator with the output terminal of electric system simulation device, the output terminal of described automatic excitation adjustor of generator emulator is connected with the input end of described excitation system power unit emulator, and the output terminal of described excitation system power unit emulator is connected with the input end of described generator and electric system simulation device.
Set end voltage electric current, generator connecting in parallel with system signal are delivered to automatic excitation adjustor of generator emulator by generator and electric system simulation device, field voltage controlled quentity controlled variable is sent into excitation system power unit emulator by automatic excitation adjustor of generator emulator, generator excitation voltage is sent into generator and electric system simulation device by excitation system power unit emulator, by arranging NETWORK STRUCTURE PRESERVING POWER SYSTEM, parameter and the fault in generator and electric system simulation device, realize the emulation of whole excitation system control characteristic.
Above-mentioned field regulator emulator is provided with automatism voltage control device AVR, overexciation limiter, underexcitation limiter, volt hertz limiter, stator current limiter and power system stabilizer, PSS;
Described overexciation limiter, underexcitation limiter, volt hertz limiter, stator current limiter are bi-directionally connected with described automatism voltage control device AVR respectively, the output terminal of described power system stabilizer, PSS is connected with the input end of described automatism voltage control device AVR, and the output terminal of described automatism voltage control device AVR is connected with the input end of described excitation system power unit emulator.
Above-mentioned automatism voltage control AVR is provided with fundamental quantity counter, Integrated comparative device, totalizer and increase and decrease magnetic comprehensive calculator, the input end of described fundamental quantity counter is connected with the output terminal of described generator and electric system simulation device, the output terminal of described fundamental quantity counter respectively with overexciation limiter, underexcitation limiter, volt hertz limiter, the input end of stator current limiter connects, described overexciation limiter, underexcitation limiter, volt hertz limiter, the output terminal of stator current limiter is connected with the input end of described Integrated comparative device respectively, the output terminal of described Integrated comparative device is connected with the input end of described increase and decrease magnetic comprehensive calculator, the output terminal of described increase and decrease magnetic comprehensive calculator, the output terminal of power system stabilizer, PSS is connected with the input end of described totalizer respectively, the output terminal of described totalizer is connected with the input end of described excitation system power unit emulator.
Above-mentioned overexciation limiter is provided with inverse-time curve counter and exciting current controlling value counter, first output terminal of described fundamental quantity counter is connected with the input end of described inverse-time curve counter, the output terminal of described inverse-time curve counter is connected with the input end of described exciting current controlling value counter, and the output terminal of exciting current controlling value counter is connected with the first input end of described Integrated comparative device.
Above-mentioned underexcitation limiter is provided with restrictive curve counter and underexcitation output counter, second output terminal of described fundamental quantity counter is connected with the input end of described restrictive curve counter, the output terminal of described restrictive curve counter is connected with the input end of described underexcitation output counter, and the output terminal of underexcitation output counter is connected with the second input end of described Integrated comparative device.
Above-mentioned volt hertz limiter is provided with voltage to frequency comparer and overexcitation exports counter, 3rd output terminal of described fundamental quantity counter is connected with the input end of described voltage to frequency comparer, the input end that output terminal and the described overexcitation of described voltage to frequency comparer export counter is connected, and overexcitation exports the output terminal of counter and is connected with the 3rd input end of described Integrated comparative device.
Said stator demand limiter is provided with perceptual stator over-current counter and capacitive stator over-current counter, 4th output terminal of described fundamental quantity counter is connected with the input end of described perceptual stator over-current counter, the output terminal of described perceptual stator over-current counter is connected with the four-input terminal of described Integrated comparative device, 5th output terminal of described fundamental quantity counter is connected with the input end of described capacitive stator over-current counter, and the output terminal of described capacitive stator over-current counter is connected with the 5th input end of described Integrated comparative device.
The Excitation Controller simulator that the utility model provides, be provided with automatic excitation adjustor of generator emulator, excitation system power unit emulator, generator and electric system simulation device, described generator is connected with the input end of described automatic excitation adjustor of generator emulator with the output terminal of electric system simulation device, the output terminal of described automatic excitation adjustor of generator is connected with the input end of described excitation system power unit emulator, and the output terminal of described excitation system power unit emulator is connected with the input end of described generator and electric system simulation device.This simulator can realize the accurate simulation to generator excited system control characteristic, has that structure is simple, the accurate feature of simulation result.
Accompanying drawing explanation
Utilize accompanying drawing to be further described the utility model, but the content in accompanying drawing is not formed any restriction of the present utility model.
Fig. 1 is the structural representation of a kind of Excitation Controller simulator of the utility model.
Fig. 2 is a concrete structure schematic diagram of a kind of Excitation Controller simulator of the utility model.
Fig. 3 is another concrete structure schematic diagram of a kind of Excitation Controller simulator of the utility model.
In Fig. 1 to Fig. 3, comprising:
Automatic excitation adjustor of generator emulator 1,
Excitation system power unit emulator 2,
Generator and electric system simulation device 3,
Automatism voltage control device AVR 4,
Fundamental quantity counter 10, Integrated comparative device 11, totalizer 12, increase and decrease magnetic comprehensive calculator 13,
Overexciation limiter 5,
Inverse-time curve counter 14, exciting current controlling value counter 15,
Underexcitation limiter 6,
Restrictive curve counter 16, underexcitation output counter 17,
Volt hertz limiter 7,
Voltage to frequency comparer 18, overexcitation output counter 19,
Stator current limiter 8,
Perception stator over-current counter 20, capacitive stator over-current counter 21,
Power system stabilizer, PSS 9.
Embodiment
The utility model is described in further detail with the following Examples.
embodiment 1.
The present embodiment provides a kind of Excitation Controller simulator, as shown in Figure 1, is provided with automatic excitation adjustor of generator emulator 1, excitation system power unit emulator 2, generator and electric system simulation device 3.Generator is connected with the input end of automatic excitation adjustor of generator with the output terminal of electric system simulation device 3, the output terminal of automatic excitation adjustor of generator emulator is connected with the input end of excitation system power unit emulator 2, and the output terminal of excitation system power unit emulator 2 is connected with the input end of generator and electric system simulation device.
Set end voltage electric current, generator connecting in parallel with system signal are delivered to automatic excitation adjustor of generator emulator 1 by generator and electric system simulation device 3, field voltage controlled quentity controlled variable is sent into excitation system power unit emulator 2 by automatic excitation adjustor of generator emulator 1, generator excitation voltage is sent into generator and electric system simulation device 3 by excitation system power unit emulator 2, by arranging NETWORK STRUCTURE PRESERVING POWER SYSTEM, parameter and the fault in generator and electric system simulation device 3, realize the emulation of whole excitation system control characteristic.
As shown in Figure 2, automatic excitation adjustor of generator emulator is provided with automatism voltage control device AVR 4(full name Automatic Voltage Regulator), overexciation limiter 5, underexcitation limiter 6, volt hertz limiter 7, stator current limiter 8 and power system stabilizer, PSS 9.
Overexciation limiter 5, underexcitation limiter 6, volt hertz limiter 7, stator current limiter 8 are bi-directionally connected with automatism voltage control device AVR 4 respectively, the output terminal of power system stabilizer, PSS 9 is connected with the input end of automatism voltage control device AVR 4, and the output terminal of automatism voltage control device AVR 4 is connected with the input end of excitation system power unit emulator 2.
Concrete, as shown in Figure 3, automatism voltage control AVR is provided with fundamental quantity counter 10, Integrated comparative device 11, totalizer 12 and increase and decrease magnetic comprehensive calculator 13, the input end of fundamental quantity counter 10 is connected with the output terminal of generator and electric system simulation device 3, the output terminal of fundamental quantity counter 10 respectively with overexciation limiter 5, underexcitation limiter 6, volt hertz limiter 7, the input end of stator current limiter 8 connects, overexciation limiter 5, underexcitation limiter 6, volt hertz limiter 7, the output terminal of stator current limiter 8 is connected with the input end of Integrated comparative device 11 respectively, the output terminal of Integrated comparative device 11 is connected with the input end of increase and decrease magnetic comprehensive calculator 13, the output terminal of increase and decrease magnetic comprehensive calculator 13, the output terminal of power system stabilizer, PSS 9 is connected with the input end of totalizer 12 respectively, the output terminal of totalizer 12 is connected with the input end of excitation system power unit emulator 2.
Wherein, overexciation limiter 5 is provided with inverse-time curve counter 14 and exciting current controlling value counter 15, first output terminal of fundamental quantity counter 10 is connected with the input end of inverse-time curve counter 14, the output terminal of inverse-time curve counter 14 is connected with the input end of exciting current controlling value counter 15, and the output terminal of exciting current controlling value counter 15 is connected with the first input end of Integrated comparative device 11.Exciting current is sent into the inverse-time curve counter 14 in overexciation limiter 5 by the fundamental quantity counter 10 in automatism voltage control AVR, inverse-time curve counter 14 will send into exciting current controlling value counter 15 actuation time, and exciting current controlling value counter 15 will cross the Integrated comparative device 11 of encouraging in demagnetize signal feeding automatism voltage control AVR.Overexciation limiter 5 is crossed based on actual field regulator and is encouraged link simulation modeling, can reflect the acting characteristic of overexciation limiter 5 inverse time lag.When exciting current is less than threshold value, overexciation limiter 5 is failure to actuate, when exciting current is greater than threshold value, according to the inverse-time curve action demagnetize of setting.
Underexcitation limiter 6 is provided with restrictive curve counter 16 and underexcitation output counter 17, second output terminal of fundamental quantity counter 10 is connected with the input end of restrictive curve counter 16, the output terminal of restrictive curve counter 16 is connected with the input end of underexcitation output counter 17, and the output terminal of underexcitation output counter 17 is connected with the second input end of Integrated comparative device 11.Active power and reactive power signals are sent into restrictive curve counter 16 by fundamental quantity counter 10, idle minimum limits value is given underexcitation output counter 17 by restrictive curve counter 16, and underexcitation increasing magnetic signal is sent into Integrated comparative device 11 by underexcitation output counter 17.Underexcitation limiter 6, according to the underexcitation link simulation modeling of actual field regulator, can set underexcitation operation curve flexibly, and when detecting that generator operation is outside operation curve, the action of underexcitation limiter 6 is in increasing magnetic.
Volt hertz limiter 7 is provided with voltage to frequency comparer 18 and overexcitation exports counter 19,3rd output terminal of fundamental quantity counter 10 is connected with the input end of voltage to frequency comparer 18, the input end that output terminal and the overexcitation of voltage to frequency comparer 18 export counter 19 is connected, and overexcitation exports the output terminal of counter 19 and is connected with the 3rd input end of Integrated comparative device 11.Set end voltage and frequency signal are sent into voltage to frequency comparer 18 by fundamental quantity counter 10, electric voltage frequency is compared value and sends into overexcitation output counter 19 by voltage to frequency comparer 18, and overexcitation exports counter 19 and exports overexcitation demagnetize signal to Integrated comparative device 11.Volt hertz limiter 7, according to the modeling of actual field regulator volt hertz limiting element, by the ratio of machine terminal terminal voltage and frequency, is greater than threshold value action demagnetize.
Stator current limiter 8 is provided with perceptual stator over-current counter 20 and capacitive stator over-current counter 21,4th output terminal of fundamental quantity counter 10 is connected with the input end of perceptual stator over-current counter 20, the output terminal of perception stator over-current counter 20 is connected with the four-input terminal of Integrated comparative device 11,5th output terminal of fundamental quantity counter 10 is connected with the input end of capacitive stator over-current counter 21, and the output terminal of capacitive stator over-current counter 21 is connected with the 5th input end of described Integrated comparative device 11.
Stator current perunit value is sent into perceptual stator over-current counter 20 and capacitive stator over-current counter 21 by fundamental quantity counter 10 respectively, and perceptual stator current overcurrent demagnetize signal and capacitive stator current overcurrent are increased magnetic signal and send into Integrated comparative device 11 by perceptual stator over-current counter 20 and capacitive stator over-current counter 21.Stator current limiter 8 is according to the modeling of actual field regulator stator current limiting element, and when generator band capacitive load, action is in increasing magnetic; When generator band inductive load, action is in demagnetize.
Power system stabilizer, PSS 9, according to the modeling of actual field regulator power system stabilizer, PSS, can arrange different parameters and structure flexibly, realize the emulation to power system stabilizer, PSS power oscillation damping characteristic.
This simulator can realize the accurate simulation to generator excited system control characteristic, has that structure is simple, the accurate feature of simulation result.
Finally should be noted that; above embodiment is only in order to illustrate the technical solution of the utility model but not restriction to the utility model protection domain; although be explained in detail the utility model with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify to the technical solution of the utility model or equivalent replacement, and not depart from essence and the scope of technical solutions of the utility model.
Claims (7)
1. an Excitation Controller simulator, it is characterized in that: be provided with automatic excitation adjustor of generator emulator, excitation system power unit emulator, generator and electric system simulation device, described generator is connected with the input end of described automatic excitation adjustor of generator with the output terminal of electric system simulation device, the output terminal of described automatic excitation adjustor of generator emulator is connected with the input end of described excitation system power unit emulator, and the output terminal of described excitation system power unit emulator is connected with the input end of described generator and electric system simulation device.
2. Excitation Controller simulator according to claim 1, is characterized in that: described field regulator emulator is provided with automatism voltage control device AVR, overexciation limiter, underexcitation limiter, volt hertz limiter, stator current limiter and power system stabilizer, PSS;
Described overexciation limiter, underexcitation limiter, volt hertz limiter, stator current limiter are bi-directionally connected with described automatism voltage control device AVR respectively, the output terminal of described power system stabilizer, PSS is connected with the input end of described automatism voltage control device AVR, and the output terminal of described automatism voltage control device AVR is connected with the input end of described excitation system power unit emulator.
3. Excitation Controller simulator according to claim 2, it is characterized in that: described automatism voltage control AVR is provided with fundamental quantity counter, Integrated comparative device, totalizer and increase and decrease magnetic comprehensive calculator, the input end of described fundamental quantity counter is connected with the output terminal of described generator and electric system simulation device, the output terminal of described fundamental quantity counter respectively with overexciation limiter, underexcitation limiter, volt hertz limiter, the input end of stator current limiter connects, described overexciation limiter, underexcitation limiter, volt hertz limiter, the output terminal of stator current limiter is connected with the input end of described Integrated comparative device respectively, the output terminal of described Integrated comparative device is connected with the input end of described increase and decrease magnetic comprehensive calculator, the output terminal of described increase and decrease magnetic comprehensive calculator, the output terminal of power system stabilizer, PSS is connected with the input end of described totalizer respectively, the output terminal of described totalizer is connected with the input end of described excitation system power unit emulator.
4. Excitation Controller simulator according to claim 3, is characterized in that:
Described overexciation limiter is provided with inverse-time curve counter and exciting current controlling value counter, first output terminal of described fundamental quantity counter is connected with the input end of described inverse-time curve counter, the output terminal of described inverse-time curve counter is connected with the input end of described exciting current controlling value counter, and the output terminal of exciting current controlling value counter is connected with the first input end of described Integrated comparative device.
5. Excitation Controller simulator according to claim 4, is characterized in that: described in
Underexcitation limiter is provided with restrictive curve counter and underexcitation output counter, second output terminal of described fundamental quantity counter is connected with the input end of described restrictive curve counter, the output terminal of described restrictive curve counter is connected with the input end of described underexcitation output counter, and the output terminal of underexcitation output counter is connected with the second input end of described Integrated comparative device.
6. Excitation Controller simulator according to claim 5, it is characterized in that: described volt hertz limiter is provided with voltage to frequency comparer and overexcitation exports counter, 3rd output terminal of described fundamental quantity counter is connected with the input end of described voltage to frequency comparer, the input end that output terminal and the described overexcitation of described voltage to frequency comparer export counter is connected, and overexcitation exports the output terminal of counter and is connected with the 3rd input end of described Integrated comparative device.
7. Excitation Controller simulator according to claim 6, it is characterized in that: described stator current limiter is provided with perceptual stator over-current counter and capacitive stator over-current counter, 4th output terminal of described fundamental quantity counter is connected with the input end of described perceptual stator over-current counter, the output terminal of described perceptual stator over-current counter is connected with the four-input terminal of described Integrated comparative device, 5th output terminal of described fundamental quantity counter is connected with the input end of described capacitive stator over-current counter, the output terminal of described capacitive stator over-current counter is connected with the 5th input end of described Integrated comparative device.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105515477A (en) * | 2015-12-14 | 2016-04-20 | 国电南瑞科技股份有限公司 | Realization method of stator current limiter in excitation system |
| CN105811471A (en) * | 2016-03-14 | 2016-07-27 | 大唐韩城第二发电有限责任公司 | Network source coordinative processing method |
| CN106383311A (en) * | 2016-11-25 | 2017-02-08 | 国网浙江省电力公司电力科学研究院 | Method for online determining generator excitation limitation performance |
| CN106935115A (en) * | 2015-12-29 | 2017-07-07 | 中国电力科学研究院 | A kind of method for building up of generator excited system load module |
| CN108333507A (en) * | 2017-01-18 | 2018-07-27 | 南方电网科学研究院有限责任公司 | Generator excitation regulator detecting system |
| CN108565870A (en) * | 2018-04-19 | 2018-09-21 | 南方电网科学研究院有限责任公司 | Method for evaluating static voltage stability of power grid system based on PSSE |
-
2015
- 2015-04-23 CN CN201520250607.5U patent/CN204536761U/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105515477A (en) * | 2015-12-14 | 2016-04-20 | 国电南瑞科技股份有限公司 | Realization method of stator current limiter in excitation system |
| CN105515477B (en) * | 2015-12-14 | 2018-04-20 | 国电南瑞科技股份有限公司 | The implementation method of stator current limiter in a kind of excitation system |
| CN106935115A (en) * | 2015-12-29 | 2017-07-07 | 中国电力科学研究院 | A kind of method for building up of generator excited system load module |
| CN105811471A (en) * | 2016-03-14 | 2016-07-27 | 大唐韩城第二发电有限责任公司 | Network source coordinative processing method |
| CN105811471B (en) * | 2016-03-14 | 2018-07-13 | 大唐韩城第二发电有限责任公司 | A kind of net source coordination processing method |
| CN106383311A (en) * | 2016-11-25 | 2017-02-08 | 国网浙江省电力公司电力科学研究院 | Method for online determining generator excitation limitation performance |
| CN106383311B (en) * | 2016-11-25 | 2018-12-11 | 国网浙江省电力有限公司电力科学研究院 | A kind of online judgment method of generator excitation limiting performance |
| CN108333507A (en) * | 2017-01-18 | 2018-07-27 | 南方电网科学研究院有限责任公司 | Generator excitation regulator detecting system |
| CN108333507B (en) * | 2017-01-18 | 2020-11-03 | 南方电网科学研究院有限责任公司 | Generator excitation regulator detecting system |
| CN108565870A (en) * | 2018-04-19 | 2018-09-21 | 南方电网科学研究院有限责任公司 | Method for evaluating static voltage stability of power grid system based on PSSE |
| CN108565870B (en) * | 2018-04-19 | 2020-08-14 | 南方电网科学研究院有限责任公司 | Method for evaluating static voltage stability of power grid system based on PSSE |
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Effective date of registration: 20210602 Address after: 510700 3rd, 4th and 5th floors of building J1 and 3rd floor of building J3, No.11 Kexiang Road, Science City, Luogang District, Guangzhou City, Guangdong Province Patentee after: China South Power Grid International Co.,Ltd. Address before: 510080 Guangzhou, Yuexiu District, Guangdong Province Dongfeng East Road, 6 water tower, Guangdong tower. Patentee before: China South Power Grid International Co.,Ltd. Patentee before: POWER GRID TECHNOLOGY RESEARCH CENTER. CHINA SOUTHERN POWER GRID |
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