CN105471342B - A kind of device and method of nuclear power station stick control generator quick de-excitation - Google Patents
A kind of device and method of nuclear power station stick control generator quick de-excitation Download PDFInfo
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- CN105471342B CN105471342B CN201511028705.5A CN201511028705A CN105471342B CN 105471342 B CN105471342 B CN 105471342B CN 201511028705 A CN201511028705 A CN 201511028705A CN 105471342 B CN105471342 B CN 105471342B
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- switch
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- 238000000034 method Methods 0.000 title claims abstract description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 35
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 35
- 239000010703 silicon Substances 0.000 claims abstract description 35
- 230000005347 demagnetization Effects 0.000 claims abstract description 13
- 230000008030 elimination Effects 0.000 claims abstract description 8
- 238000003379 elimination reaction Methods 0.000 claims abstract description 8
- 230000005389 magnetism Effects 0.000 claims abstract description 8
- 230000010355 oscillation Effects 0.000 claims description 11
- 238000006467 substitution reaction Methods 0.000 abstract description 3
- 210000001367 artery Anatomy 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 210000003462 vein Anatomy 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/10—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load
- H02P9/12—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load for demagnetising; for reducing effects of remanence; for preventing pole reversal
- H02P9/123—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load for demagnetising; for reducing effects of remanence; for preventing pole reversal for demagnetising; for reducing effects of remanence
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
- Rectifiers (AREA)
Abstract
The present invention provides a kind of devices of nuclear power station stick control generator quick de-excitation, generator system magnetism elimination circuit includes degaussing switch, generator amature one end connects the one end de-excitation resistance R and the first contact of degaussing switch one end, the first contact of degaussing switch other end connection diode D1 cathode and cathode rectifier, rectifier bridge cathode connects IGBT pipe emitters, IGBT pipe collectors connect diode D1 anodes and the second contact of degaussing switch one end, and the second contact of degaussing switch other end connects the generator amature other end；Further include silicon-controlled D2 and for silicon-controlled D2 to be touched to logical electronic switch in demagnetization；Silicon-controlled one end D2 connects the de-excitation resistance R other ends, and the other end connects the generator amature other end.The present invention also provides the methods of nuclear power station stick control generator quick de-excitation.The present invention uses silicon-controlled substitution conventional diode, is touched with electronic switch when demagnetization logical silicon-controlled, realizes quick de-excitation, has the advantages that demagnetizing time is short, leakage current is small.
Description
Technical field
The present invention relates to a kind of device and methods of nuclear power station stick control generator quick de-excitation, belong to nuclear power plant reactor electricity
Gas technical field.
Background technology
In nuclear power station, the power of reactor is realized by the position of adjusting control stick, the driving power of control rod
It is provided by dedicated driving mechanism power-supply system, the system is usually by two motors-generating set (MG units) and several
Switch board forms, therefore ensures the stable operation of driving mechanism power-supply system, is the important topic for realizing nuclear plant safety operation.
Driving mechanism power-supply system is during shutdown, since generator amature is there are a large amount of magnetic field energy,
It is necessary to as soon as possible discharge energy, the quick de-excitation of generator is realized, while needing to control the voltage of rotor, prevent overvoltage
Damage rotor insulation and related control device.Since generator capacity is smaller in power-supply system, magnetism elimination circuit generally use
Linear resistance adds the mode of diode, as shown in Figure 1, one end connection one end de-excitation resistance R of the rotor L of generator G and demagnetization
The first contact of switch one end KM-1, the de-excitation resistance R other ends connect diode D0 cathode, and the first contact of degaussing switch KM-1 is another
End connection diode D1 cathode and cathode rectifier, rectifier bridge cathode connect IGBT pipe Q1 emitters, and IGBT pipe Q1 collectors connect
Diode D1 anodes and the second contact of degaussing switch one end KM-2 are connect, the second contact of degaussing switch KM-2 other ends connect diode
The other end of D0 anodes and generator amature L.
Although aforesaid way has reliable operation, safeguards that simple, price is relatively low, easy acquisition, type selecting is simple, facilitates peace
Dress moves the advantages that energy effect is good, but there are problems that leakage current, specific as follows：
In normal work, two couples of contacts KM-1, KM-2 of degaussing switch close generator system.When IGBT pipes Q1 is connected
When, electric current flows through the first contact of degaussing switch KM-1, generator amature L, degaussing switch the from cathode rectifier (+end) output
Two contact KM-2 and IGBT pipe Q1 flow back to rectifier bridge cathode (- end).When IGBT pipes Q1 ends, electric current is under generator amature L
End afterflow flows back to generator through the second contact of degaussing switch lower ends KM-2, diode D1 and the first contact of degaussing switch upper ends KM-1
Some electric current is walked from diode D0 and de-excitation resistance R shuntings in the process, forms leakage current by rotor L.
Due to the presence of leakage current, the acquisition of exciting current is not only influenced, but also de-excitation resistance long-term fever, shadow can be caused
Ring the normal operation of unit.
Invention content
The nuclear power station stick control generator that the technical problem to be solved in the present invention is to provide a kind of demagnetizing times is short, leakage current is small
The device of quick de-excitation.
In order to solve the above-mentioned technical problem, the technical solution of the present invention is to provide a kind of nuclear power station stick control generators quickly to go out
The device of magnetic is set in generator system magnetism elimination circuit, and generator system magnetism elimination circuit includes degaussing switch, generator amature
One end connects the one end de-excitation resistance R and the first contact of degaussing switch one end KM-1, and the first contact of degaussing switch KM-1 other ends connect
Diode D1 cathode and cathode rectifier are connect, rectifier bridge cathode connects IGBT pipe Q1 emitters, IGBT pipe Q1 collectors connection two
Pole pipe D1 anodes and the second contact of degaussing switch one end KM-2, the second contact of degaussing switch KM-2 other ends connect generator amature
The other end；
It is characterized in that：
Further include silicon-controlled D2 and for the silicon-controlled D2 to be touched to logical electronic switch ES in demagnetization；
Described silicon-controlled one end D2 connects the de-excitation resistance R other ends, and the silicon-controlled D2 other ends connect the hair
The other end of rotor.
Preferably, the electronic switch ES includes resistance R1, and the one end resistance R1 connects the degaussing switch auxiliary contact KM_
FZ, the resistance R1 other ends connect the one end optocoupler Q, optocoupler Q other ends connection oscillation chip 555, oscillation 555 other end of chip connection
The collector of the base stage of triode P, the emitter ground connection of triode P, triode P connects transformer primary side, and transformer secondary is logical
Over commutation circuit connects the silicon-controlled D2.
Preferably, the rectification circuit includes diode D3 and diode D4, and the two poles of the earth on the transformer T pairs side connect respectively
Diode D3 anodes and diode D4 anodes are connect, diode D3 cathode connect the triggering of diode D4 cathode and the silicon-controlled D2
Pole, diode D4 anodes are also connected with the cathode of the silicon-controlled D2.
The present invention also provides a kind of dress methods of nuclear power station stick control generator quick de-excitation, using above-mentioned nuclear power station stick
The device for controlling generator quick de-excitation, when generator system is shut down, the second contact of degaussing switch KM-2 is disconnected, at this time electronic cutting
ES is closed by judging that silicon-controlled D2 is connected for the positions degaussing switch auxiliary contact KM_FZ, trigger pulse, thus by de-excitation resistance R
It accesses in generator system magnetism elimination circuit, realizes the demagnetization of generator amature.
Preferably, when the second contact of degaussing switch KM-2 is disconnected, degaussing switch auxiliary contact KM_FZ is attracted, at this time
Optocoupler Q conductings, the secondary side of optocoupler Q send out a control signal enabling oscillation chip 555 and work, and oscillation chip 555 exports one
The switch of pulse group control triode P thus can generate the identical impulse train of a cycle, the arteries and veins on the secondary side of transformer T
The rectified rear trigger electrode to silicon-controlled D2 of group is rushed, to control silicon-controlled D2 conductings.
Device provided by the invention is using the conventional diode of silicon-controlled substitution, in demagnetization using the electronic cutting of high isolation
It closes and leads to silicon-controlled touch, to realize the quick de-excitation of generator, have many advantages, such as that demagnetizing time is short, leakage current is small.
Description of the drawings
Fig. 1 is the functional block diagram that traditional field suppression equipment uses in generator system；
Fig. 2 is what the device of nuclear power station stick control generator quick de-excitation provided in this embodiment used in generator system
Functional block diagram；
Fig. 3 is the structure principle chart of electronic switch.
Specific implementation mode
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate the present invention
Rather than it limits the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, people in the art
Member can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited
Range.
In conjunction with Fig. 2, the present invention is the improvement made on the basis of traditional field suppression equipment shown in Fig. 1, and use is silicon-controlled
The conventional diode D0 of D2 substitutions, while the electronic switch ES connections of silicon-controlled D2 and high isolation, high isolation is used in demagnetization
Electronic switch ES silicon-controlled D2 is touched it is logical.
When generator system is shut down, the second contact of degaussing switch KM-2 is separated, and electronic switch ES is gone out by judging at this time
Silicon-controlled D2 is connected for the positions magnetic switch auxiliary contact KM_FZ, trigger pulse, to which de-excitation resistance R is accessed circuit, realizes
The demagnetization of generator amature.
Fig. 3 is the structure principle chart of electronic switch ES, and electronic switch ES includes resistance R1, and the one end resistance R1 connection demagnetization is opened
Auxiliary contact KM_FZ is closed, the resistance R1 other ends connect the one end optocoupler Q, and optocoupler Q other ends connection oscillation chip 555 vibrates chip
The base stage of 555 other end connecting triode P, the emitter ground connection of triode P, the collector connection transformer T of triode P is just
The two poles of the earth on side, transformer T pairs side are separately connected diode D3 anodes and diode D4 anodes, and diode D3 cathode connect diode
The trigger electrode of D4 cathode and silicon-controlled D2, diode D4 anodes are also connected with the cathode of silicon-controlled D2.
When the second contact of degaussing switch KM-2 is separated, degaussing switch auxiliary contact KM_FZ is attracted, and optocoupler Q is turned at this time,
The secondary side of optocoupler Q is issued by a control signal enabling oscillation chip 555 and works, and oscillation chip 555 exports the arteries and veins of a 20KHz
The switch of group control triode P is rushed, it is the impulse train of 20KHz, arteries and veins that thus can generate a cycle also on the secondary side of transformer T
The rectified rear trigger electrode to silicon-controlled D2 of group is rushed, to control the open-minded of silicon-controlled D2, de-excitation resistance R is accessed into circuit, it is real
The demagnetization of existing generator amature.
Claims (4)
1. a kind of device of nuclear power station stick control generator quick de-excitation is set in generator system magnetism elimination circuit, generator system
Magnetism elimination circuit includes degaussing switch, one end connection one end de-excitation resistance R of generator amature (L) and the first contact of degaussing switch
The one end KM-1, the first contact of degaussing switch KM-1 other ends connect diode D1 cathode and cathode rectifier, and rectifier bridge cathode connects
IGBT pipe Q1 emitters are connect, IGBT pipe Q1 collectors connect diode D1 anodes and the second contact of degaussing switch one end KM-2, go out
The other end of the second contact of magnetic switch KM-2 other ends connection generator amature (L)；
It is characterized in that：
Further include silicon-controlled D2 and for the silicon-controlled D2 to be touched to logical electronic switch ES in demagnetization；The silicon-controlled D2
One end connects the de-excitation resistance R other ends, and the silicon-controlled D2 other ends connect the other end of the generator amature (L)；
The electronic switch ES includes resistance R1, and the one end resistance R1 connects the degaussing switch auxiliary contact KM_FZ, and resistance R1 is another
One end connects the one end optocoupler Q, optocoupler Q other ends connection oscillation chip 555, the base of 555 other end connecting triode P of oscillation chip
The collector of pole, the emitter ground connection of triode P, triode P connects the positive side transformer (T), and transformer (T) pair side passes through rectification
Circuit connects the silicon-controlled D2.
2. a kind of device of nuclear power station stick control generator quick de-excitation as described in claim 1, it is characterised in that：The rectification
Circuit includes diode D3 and diode D4, and the two poles of the earth on the secondary side of the transformer (T) are separately connected diode D3 anodes and two poles
Pipe D4 anodes, diode D3 cathode connect the trigger electrode of diode D4 cathode and the silicon-controlled D2, and diode D4 anodes also connect
Connect the cathode of the silicon-controlled D2.
3. a kind of method of nuclear power station stick control generator quick de-excitation, it is characterised in that：Using as claimed in claim 1 or 2
The device of nuclear power station stick control generator quick de-excitation, when generator system is shut down, the second contact of degaussing switch KM-2 is disconnected, this
When electronic switch ES by judging that silicon-controlled D2 is connected for the positions degaussing switch auxiliary contact KM_FZ, trigger pulse, to will
In de-excitation resistance R access generator system magnetism elimination circuits, the demagnetization of generator amature is realized.
4. a kind of method of nuclear power station stick control generator quick de-excitation as claimed in claim 3, it is characterised in that：The demagnetization
When the second contact of switch KM-2 is disconnected, degaussing switch auxiliary contact KM_FZ is attracted, and optocoupler Q is connected at this time, the secondary side of optocoupler Q
It sends out a control signal enabling oscillation chip 555 to work, oscillation one pulse group control triode P's of output of chip 555 opens
It closes, thus the identical impulse train of a cycle can be generated on the secondary side of transformer (T), to silicon-controlled after the impulse train is rectified
The trigger electrode of D2, to control silicon-controlled D2 conductings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511028705.5A CN105471342B (en) | 2015-12-31 | 2015-12-31 | A kind of device and method of nuclear power station stick control generator quick de-excitation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511028705.5A CN105471342B (en) | 2015-12-31 | 2015-12-31 | A kind of device and method of nuclear power station stick control generator quick de-excitation |
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| Publication Number | Publication Date |
|---|---|
| CN105471342A CN105471342A (en) | 2016-04-06 |
| CN105471342B true CN105471342B (en) | 2018-09-18 |
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| CN201511028705.5A Active CN105471342B (en) | 2015-12-31 | 2015-12-31 | A kind of device and method of nuclear power station stick control generator quick de-excitation |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021170074A1 (en) * | 2020-02-26 | 2021-09-02 | 国网浙江省电力有限公司电力科学研究院 | Flexible excitation system and control method therefor |
| CN115083705B (en) * | 2022-06-21 | 2023-03-24 | 深圳可雷可科技股份有限公司 | Silicon carbide nonlinear resistor for de-excitation of generator |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2845580A (en) * | 1954-04-30 | 1958-07-29 | Gen Electric | Electric protective equipment |
| CN101977004A (en) * | 2010-08-18 | 2011-02-16 | 国电南瑞科技股份有限公司 | Large current deexcitation loop based on silicon controlled rectifier subject to multi-redundancy trigger of jumper |
| CN102386827A (en) * | 2011-11-03 | 2012-03-21 | 东方电气集团东方电机有限公司 | High-voltage resistant jumper and de-excitation protective circuit based on same |
| CN202406081U (en) * | 2011-11-03 | 2012-08-29 | 东方电气集团东方电机有限公司 | Field suppression protection circuit based on high-voltage resistance jumper and high-voltage resistance jumper |
| CN102684156A (en) * | 2012-03-15 | 2012-09-19 | 哈尔滨电机厂有限责任公司 | Field discharge and overvoltage protective device for large-sized generator rotor |
| CN103454544A (en) * | 2013-09-25 | 2013-12-18 | 南京国电南自美卓控制系统有限公司 | Linear field suppression circuit detection method based on electronic jumper |
-
2015
- 2015-12-31 CN CN201511028705.5A patent/CN105471342B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2845580A (en) * | 1954-04-30 | 1958-07-29 | Gen Electric | Electric protective equipment |
| CN101977004A (en) * | 2010-08-18 | 2011-02-16 | 国电南瑞科技股份有限公司 | Large current deexcitation loop based on silicon controlled rectifier subject to multi-redundancy trigger of jumper |
| CN102386827A (en) * | 2011-11-03 | 2012-03-21 | 东方电气集团东方电机有限公司 | High-voltage resistant jumper and de-excitation protective circuit based on same |
| CN202406081U (en) * | 2011-11-03 | 2012-08-29 | 东方电气集团东方电机有限公司 | Field suppression protection circuit based on high-voltage resistance jumper and high-voltage resistance jumper |
| CN102684156A (en) * | 2012-03-15 | 2012-09-19 | 哈尔滨电机厂有限责任公司 | Field discharge and overvoltage protective device for large-sized generator rotor |
| CN103454544A (en) * | 2013-09-25 | 2013-12-18 | 南京国电南自美卓控制系统有限公司 | Linear field suppression circuit detection method based on electronic jumper |
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| CN105471342A (en) | 2016-04-06 |
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Address after: 200240 Shanghai city Minhang District Jianchuan Road No. 1115 Patentee after: SHANGHAI POWER EQUIPMENT Research Institute Patentee after: SHANGHAI KEDA ELECTROMECHANICAL CONTROL Co.,Ltd. Address before: 200240 Shanghai city Minhang District Jianchuan Road No. 1115 Patentee before: SHANGHAI POWER EQUIPMENT Research Institute Patentee before: SHANGHAI KEDA ELECTROMECHANICAL CONTROL Co.,Ltd. |
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Effective date of registration: 20210927 Address after: 200240 Shanghai city Minhang District Jianchuan Road No. 1115 Patentee after: SHANGHAI POWER EQUIPMENT Research Institute Address before: 200240 Shanghai city Minhang District Jianchuan Road No. 1115 Patentee before: SHANGHAI POWER EQUIPMENT Research Institute Patentee before: SHANGHAI KEDA ELECTROMECHANICAL CONTROL Co.,Ltd. |
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