CN204205604U - A kind of high-pressure thyristor switched capacitor valve group circuits for triggering - Google Patents
A kind of high-pressure thyristor switched capacitor valve group circuits for triggering Download PDFInfo
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- CN204205604U CN204205604U CN201420537529.2U CN201420537529U CN204205604U CN 204205604 U CN204205604 U CN 204205604U CN 201420537529 U CN201420537529 U CN 201420537529U CN 204205604 U CN204205604 U CN 204205604U
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- 239000003990 capacitor Substances 0.000 title claims abstract description 24
- 238000012544 monitoring process Methods 0.000 claims abstract description 30
- 238000007493 shaping process Methods 0.000 claims abstract description 24
- 230000003287 optical effect Effects 0.000 claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/10—Flexible AC transmission systems [FACTS]
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Abstract
The utility model relates to a kind of high-pressure thyristor switched capacitor valve group circuits for triggering, comprise get can and power-switching circuit, optical receiving circuit, thyristor voltage observation circuit, supply voltage monitoring circuit, logical circuit, trigger impulse formed circuit, return pulse shaping circuit, photoelectric switching circuit, thyristor voltage observation circuit, supply voltage monitoring circuit, optical receiving circuit, trigger impulse form cable, return pulse shaping circuit is all connected with logical circuit, and return pulse shaping circuit is connected with photoelectric switching circuit.Advantage is: by Real-Time Monitoring thyristor both end voltage, and when thyristor has Voltage Establishment, trigger board produces ono shot pulse automatically, reduces the thermal losses that trigger board is unnecessary, reduces the volume of trigger board.Have employed pulse and trigger thyristor, do not need to carry out precharge to capacitor before making TSC system input, namely the i.e. throwing achieving TSC valve group cuts, and improves the performance of TSC system.
Description
Technical field
The utility model belongs to thyristor switchable capacitor triggering technique field in power electronic technology, particularly relates to a kind of high-pressure thyristor switched capacitor valve group circuits for triggering.
Background technology
Along with developing rapidly of modern power systems and power electronic technology, increasing large power power electronic appliance is used in electric power system.Thyristor switchable capacitor group (TSC), as the reactive-load compensation equipment of a kind of advanced person, is widely used in the world.Traditional mechanical switched capacitor (MSC) is applied circuit breaker and is carried out switching to Capacitor banks, and the impulse current of switching moment is comparatively large, and can not frequent switching.Compare with traditional mechanical switched capacitor, thyristor switchable capacitor have that operation lifetime is long, impulse current is little, can the advantage such as frequent switching.
Thyristor controlled series compensation is the nucleus equipment of thyristor switchable capacitor device, and thyristor trigger board design is the Focal point and difficult point of thyristor controlled series compensation design.Thyristor trigger board works in higher-pressure region, directly controls thyristor, and design difficulty is large.On the other hand, thyristor trigger board communicates with control system, participates in control directly, and the quality of therefore thyristor trigger board design directly affects the reliability of valve group and even the work of TSC equipment.Because thyristor trigger board participates in control directly, control thinking, control strategy is different, trigger board design is also different, and this patent relates to a kind of thyristor gating circuit being applicable to the thyristor switchable capacitor valve group of high-pressure system.
TSC equipment institute bringing onto load belongs to capacitive load, and the current stress that valve group is born under system fault condition and voltage stress are very large, and the reasonability design thyristor trigger board and reliability are had higher requirement.Traditional TSC thyristor trigger board adopts spike train triggering mode respectively to trigger 180 ° to forward and reverse thyristor, turn off in respective conduction period to ensure that thyristor is unlikely, but which increase the burden of gate circuit transistor gate, due to the increase of trigger power, add the volume and complexity of getting energy loop simultaneously, cause unnecessary thermal losses.Meanwhile, this triggering mode heavy dependence control system, can not form complete closed loop with control system, the poor anti jamming capability of system.In addition, the system adopting spike train to trigger cannot return thyristor state between TSC valve group input time again, easily occurs a large amount of transistors breakdown and phenomenon that system cannot trip.
Summary of the invention
For overcoming the deficiencies in the prior art, the purpose of this utility model is to provide a kind of high-pressure thyristor switched capacitor valve group circuits for triggering, can be applied in various high-pressure system and low-pressure system.Employing pulse triggers, and does not need system to carry out electric capacity precharge, can directly judge valve group voltage over zero, directly trigger valve group (thyristor) by circuit board, and triggered realizing TSC function by photoelectricity, structure is simple, and reliability is high.
For achieving the above object, the utility model is achieved through the following technical solutions:
A kind of high-pressure thyristor switched capacitor valve group circuits for triggering, comprise get can and power-switching circuit, optical receiving circuit, thyristor voltage observation circuit, supply voltage monitoring circuit, logical circuit, trigger impulse formed circuit, return pulse shaping circuit, photoelectric switching circuit, thyristor voltage observation circuit, supply voltage monitoring circuit, optical receiving circuit, trigger impulse form cable, return pulse shaping circuit is all connected with logical circuit, and return pulse shaping circuit is connected with photoelectric switching circuit;
Get can and power-switching circuit obtain energy from high-pressure side, be converted into the direct current of+40V and+10V, provide required power supply to each circuit;
Thyristor voltage observation circuit Real-Time Monitoring thyristor voltage, and send output signal to logical circuit;
Supply voltage monitoring circuit monitoring supply voltage, and output signal is to logical circuit;
The switching order of optical receiving circuit receiving control system transmission, and output signal is to logical circuit;
Logical circuit exports the triggering signal of 10us to trigger impulse formation circuit, exports the triggering signal of 5us to return pulse shaping circuit, and return pulse shaping circuit is returned with the light signal of 5us to control system by photoelectric switching circuit.
Described logical circuit is primarily of Schmidt's not gate, monostable flipflop, three value and gate composition, thyristor monitoring circuit is connected with Schmidt's not gate U1, and Schmidt's not gate U1 is connected with 4 pin of monostable flipflop U3, the B pin of three value and gate U7 after connecting with Schmidt's not gate U2 respectively; Power supply is connected with Schmidt's not gate U4 with electric voltage observation circuit, and the A pin of Schmidt's not gate U4, Schmidt's not gate U5, three value and gate U7 connects successively; Optical receiving circuit is connected with Schmidt's not gate U6, and Schmidt's not gate U6 is connected with the C pin of three value and gate by resistance R1, and the output Y pin of three value and gate is connected with 12 pin of monostable flipflop U8.
Described Schmidt's not gate is MC14584.
Described monostable flipflop is MC14538.
Described three value and gate is 74HC11.
Compared with prior art, the beneficial effects of the utility model are:
1) do not adopt spike train to trigger thyristor, but by Real-Time Monitoring thyristor both end voltage, when thyristor has Voltage Establishment, trigger board produce ono shot pulse automatically, reduces the thermal losses that trigger board is unnecessary, greatly reduces the volume of trigger board.
2) trigger thyristor owing to have employed pulse, do not need to carry out precharge to capacitor before making TSC system input, " namely throw and namely cut " of TSC valve group can be realized, improve the performance of TSC system.
3) between valve group input time, when thyristor voltage is set up, trigger board can trigger thyristor automatically, and simultaneously to control system return thyristor status signal, and control system defines complete closed loop, enhances the reliability of system.
Accompanying drawing explanation
Fig. 1 is the theory diagram of high-pressure thyristor switched capacitor valve group circuits for triggering.
Fig. 2 is the logic schematic diagram of logical circuit.
Fig. 3 is logical circuit schematic diagram.
Fig. 4 is the sequential chart of high-pressure thyristor switched capacitor valve group circuits for triggering.
Embodiment
Below in conjunction with Figure of description, the utility model is described in detail, but it should be noted that enforcement of the present utility model is not limited to following execution mode.
See Fig. 1-Fig. 4, a kind of high-pressure thyristor switched capacitor valve group circuits for triggering, comprise get can and power-switching circuit, optical receiving circuit, thyristor voltage observation circuit, supply voltage monitoring circuit, logical circuit, trigger impulse formed circuit, return pulse shaping circuit, photoelectric switching circuit, thyristor voltage observation circuit, supply voltage monitoring circuit, optical receiving circuit, trigger impulse form cable, return pulse shaping circuit is all connected with logical circuit, and return pulse shaping circuit is connected with photoelectric switching circuit;
Get can and power-switching circuit obtain energy from high-pressure side, be converted into the direct current of+40V and+10V, provide required power supply to each circuit;
Thyristor voltage observation circuit Real-Time Monitoring thyristor voltage, and send output signal to logical circuit;
Supply voltage monitoring circuit monitoring supply voltage, and output signal is to logical circuit;
The switching order of optical receiving circuit receiving control system transmission, and output signal is to logical circuit;
Logical circuit exports the triggering signal of 10us to trigger impulse formation circuit, exports the triggering signal of 5us to return pulse shaping circuit, and return pulse shaping circuit is returned with the light signal of 5us to control system by photoelectric switching circuit.
See Fig. 3, logical circuit is primarily of Schmidt's not gate, monostable flipflop, three value and gate composition, thyristor monitoring circuit is connected with Schmidt's not gate U1, and Schmidt's not gate U1 is connected with 4 pin of monostable flipflop U3, the B pin of three value and gate U7 after connecting with Schmidt's not gate U2 respectively; Power supply is connected with Schmidt's not gate U4 with electric voltage observation circuit, and the A pin of Schmidt's not gate U4, Schmidt's not gate U5, three value and gate U7 connects successively; Optical receiving circuit is connected with Schmidt's not gate U6, and Schmidt's not gate U6 is connected with the C pin of three value and gate by resistance R1, and the output Y pin of three value and gate is connected with 12 pin of monostable flipflop U8.Wherein, Schmidt's not gate is MC14584; Monostable flipflop is MC14538; Three value and gate is 74HC11.
Embodiment
See Fig. 1, energy and power-switching circuit obtain energy from high-pressure side, are converted into the direct current of+40V and+10V, provide required power supply to each circuit of trigger board.Supply voltage monitoring circuit monitoring trigger board+40V power supply, this power supply provides energy for thyristor gating circuit, when this supply voltage is lower than+20V, think that TE plate cannot triggered as normal thyristor, now outputing signal S2 by supply voltage monitoring circuit is low level, deliver to logical circuit and block triggering signal, when trigger board+40V power supply is higher than+20V, supply voltage monitoring circuit exports high level.Thyristor voltage observation circuit Real-Time Monitoring thyristor voltage, when thyristor voltage is higher than+30V, thyristor voltage observation circuit output signal S1 is high level (otherwise output low level), delivers to logical circuit.The switching order that optical receiving circuit receiving control system transmits, when receiving control system " throwing " order, optical receiving circuit output signal S3 is high level, deliver to logical circuit, when receiving control system and " cutting " order, optical receiving circuit output signal S3 is low level, delivers to logical circuit.Signal S1, S2, S3 that logical circuit reception thyristor voltage observation circuit, supply voltage monitoring circuit, optical receiving circuit transmit, form to trigger impulse the triggering signal S4 that circuit exports 10us, export the return signal S5 of 5us to return pulse shaping circuit.After trigger impulse formation circuit receives triggering signal S4, by power amplification, be the strong trigger impulse of 10us to thyristor controlled series compensation pulsewidth.When return pulse shaping circuit receives the return signal S5 that logical circuit transmits, by photoelectric switching circuit to control system return with the light signal of 5us, by Optical Fiber Transmission to control system.
See Fig. 2, signal S1, S2, S3 that logical circuit reception thyristor voltage observation circuit, supply voltage monitoring circuit, optical receiving circuit transmit, by S1, S2, S3 phase with, namely, when trigger board receive the throwing order of control system, trigger board+40V supply voltage reach+30V higher than+20V, thyristor terminal voltage time, logical circuit exports the triggering signal of 10us and the return signal of 5us.
See that Fig. 3 is logical circuit schematic diagram, the output signal S1 of thyristor voltage observation circuit is through two Schmidt's not gate U1, three value and gate U7 is inputed to after U2 shaping, input to monostable flipflop U3 simultaneously, the rising edge of monostable flipflop U3 capturing input signal, export the pulse of 5us simultaneously, send into return pulse shaping circuit, the output signal S2 of supply voltage monitoring circuit is through two Schmidt's not gate U4, three value and gate U7 is inputed to after U5 shaping, the output signal S3 of optical receiving circuit inputs to three value and gate U7 after the reverse also shaping of Schmidt's not gate U6, the output order steady state trigger U8 of three value and gate U7, the Puled input being exported a 10us by U8 forms circuit to trigger impulse.
See Fig. 4, TSC valve group circuits for triggering sequential chart, when switching signal is high level, after forward thyristor sets up+30V voltage, return 5us return pulse to forward SCR-output 10us trigger impulse.When switching signal is high level, after negative sense thyristor sets up+30V voltage, return 5us return pulse to negative sense SCR-output 10us trigger impulse.
Claims (5)
1. high-pressure thyristor switched capacitor valve group circuits for triggering, it is characterized in that, comprise get can and power-switching circuit, optical receiving circuit, thyristor voltage observation circuit, supply voltage monitoring circuit, logical circuit, trigger impulse formed circuit, return pulse shaping circuit, photoelectric switching circuit, thyristor voltage observation circuit, supply voltage monitoring circuit, optical receiving circuit, trigger impulse form cable, return pulse shaping circuit is all connected with logical circuit, and return pulse shaping circuit is connected with photoelectric switching circuit;
Get can and power-switching circuit obtain energy from high-pressure side, be converted into the direct current of+40V and+10V, provide required power supply to each circuit;
Thyristor voltage observation circuit Real-Time Monitoring thyristor voltage, and send output signal to logical circuit;
Supply voltage monitoring circuit monitoring supply voltage, and output signal is to logical circuit;
The switching order of optical receiving circuit receiving control system transmission, and output signal is to logical circuit;
Logical circuit exports the triggering signal of 10us to trigger impulse formation circuit, exports the triggering signal of 5us to return pulse shaping circuit, and return pulse shaping circuit is returned with the light signal of 5us to control system by photoelectric switching circuit.
2. a kind of high-pressure thyristor switched capacitor valve group circuits for triggering according to claim 1, it is characterized in that, described logical circuit is primarily of Schmidt's not gate, monostable flipflop, three value and gate composition, thyristor monitoring circuit is connected with Schmidt's not gate U1, and Schmidt's not gate U1 is connected with 4 pin of monostable flipflop U3, the B pin of three value and gate U7 after connecting with Schmidt's not gate U2 respectively; Power supply is connected with Schmidt's not gate U4 with electric voltage observation circuit, and the A pin of Schmidt's not gate U4, Schmidt's not gate U5, three value and gate U7 connects successively; Optical receiving circuit is connected with Schmidt's not gate U6, and Schmidt's not gate U6 is connected with the C pin of three value and gate by resistance R1, and the output Y pin of three value and gate is connected with 12 pin of monostable flipflop U8.
3. a kind of high-pressure thyristor switched capacitor valve group circuits for triggering according to claim 2, it is characterized in that, described Schmidt's not gate is MC14584.
4. a kind of high-pressure thyristor switched capacitor valve group circuits for triggering according to claim 2, it is characterized in that, described monostable flipflop is MC14538.
5. a kind of high-pressure thyristor switched capacitor valve group circuits for triggering according to claim 2, it is characterized in that, described three value and gate is 74HC11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420537529.2U CN204205604U (en) | 2014-09-18 | 2014-09-18 | A kind of high-pressure thyristor switched capacitor valve group circuits for triggering |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420537529.2U CN204205604U (en) | 2014-09-18 | 2014-09-18 | A kind of high-pressure thyristor switched capacitor valve group circuits for triggering |
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| CN204205604U true CN204205604U (en) | 2015-03-11 |
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| CN201420537529.2U Expired - Lifetime CN204205604U (en) | 2014-09-18 | 2014-09-18 | A kind of high-pressure thyristor switched capacitor valve group circuits for triggering |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107168106A (en) * | 2017-06-30 | 2017-09-15 | 云南电网有限责任公司电力科学研究院 | A kind of VBE system simulations method |
| CN108051718A (en) * | 2017-11-28 | 2018-05-18 | 中国西电电气股份有限公司 | A kind of light-operated converter valve thyristor voltage monitoring unit based on integrated circuit |
| CN108718077A (en) * | 2018-05-25 | 2018-10-30 | 湖南省湘电试验研究院有限公司 | A kind of high-pressure thyristor triggering control and state monitoring apparatus and its application process |
| CN109962611A (en) * | 2017-12-14 | 2019-07-02 | 中电普瑞科技有限公司 | A kind of high-lying electronic plate and its control method for high altitude localities |
-
2014
- 2014-09-18 CN CN201420537529.2U patent/CN204205604U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107168106A (en) * | 2017-06-30 | 2017-09-15 | 云南电网有限责任公司电力科学研究院 | A kind of VBE system simulations method |
| CN108051718A (en) * | 2017-11-28 | 2018-05-18 | 中国西电电气股份有限公司 | A kind of light-operated converter valve thyristor voltage monitoring unit based on integrated circuit |
| CN109962611A (en) * | 2017-12-14 | 2019-07-02 | 中电普瑞科技有限公司 | A kind of high-lying electronic plate and its control method for high altitude localities |
| CN108718077A (en) * | 2018-05-25 | 2018-10-30 | 湖南省湘电试验研究院有限公司 | A kind of high-pressure thyristor triggering control and state monitoring apparatus and its application process |
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