CN201570975U - Gate pole unit energy acquiring device of direct current converter valve thyristor - Google Patents
Gate pole unit energy acquiring device of direct current converter valve thyristor Download PDFInfo
- Publication number
- CN201570975U CN201570975U CN2009202774868U CN200920277486U CN201570975U CN 201570975 U CN201570975 U CN 201570975U CN 2009202774868 U CN2009202774868 U CN 2009202774868U CN 200920277486 U CN200920277486 U CN 200920277486U CN 201570975 U CN201570975 U CN 201570975U
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- thyristor
- converter valve
- gate pole
- circuit
- energy
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- 238000013016 damping Methods 0.000 claims abstract description 14
- 238000011084 recovery Methods 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 description 9
- 238000004146 energy storage Methods 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000005622 photoelectricity Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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Abstract
The utility model discloses a gate pole unit energy acquiring device of a direct current converter valve thyristor, in particular to a converter valve triggering device in the circuit control. The device comprises a thyristor and a converter valve, wherein the thyristor comprises a damping loop; the converter valve comprises a control circuit, a triggering amplifying circuit and a capacitance; and the input end of the converter valve is connected with the damping loop of the thyristor and the output end thereof is connected with the thyristor. The energy acquiring device is designed by using storing circuit principle of the big capacitance, obtains the triggering and protecting circuit energy of the direct current converter valve thyristor in a mode of acquiring energy at the end of the thyristor, and is simple and reliable. The energy acquiring circuit still can guarantee the converter valve to normally work for more than 0.7 seconds in the situation that the end of the valve has no voltage, and can not cause the recovery delay because an accumulator needs to be charged and has very high reliability.
Description
Technical field
The utility model relates to a kind of circuit control, is specifically related to the gate pole unit energy taking device of DC converter valve thyristor.
Background technology
Along with the development of power electronic device and the maturation of photoelectric technology; the thyristor valve trigger technology has also obtained huge development; the DC converter valve thyristor needs certain electric energy when triggering with protective circuit work; the thyristor valve trigger at initial stage adopts low-pressure side to send the energy mode usually; low-pressure side send can be able to be divided into electromagnetism send can and photoelectricity send energy; electromagnetism send and can isolate through pulse transformer with the power supply of low-pressure side; rectification obtains supply voltage through converter valve; again through converting the required voltage of work to; generally speaking; the converter valve electric pressure is very high, and pulse transformer needs the high potential of isolation valve body and the electronegative potential of low-pressure side power supply, implements very difficult.Can avoid above-mentioned shortcoming though photoelectricity send, cost is too high at present, is unfavorable for promoting.
The utility model content
Get can intermediate member many for solving in the prior art change of current lock circuits for triggering, high, electronegative potential is isolated difficulty and the high shortcoming of part apparatus cost, this programme provides a kind of DC converter valve thyristor gate pole unit to get the scheme of energy from the thyristor terminal voltage, concrete scheme is as follows: a kind of DC converter valve thyristor gate pole unit energy taking device, comprise thyristor and gate pole unit, it is characterized in that, described thyristor comprises damping circuit, described gate pole unit comprises control circuit, trigger amplifying circuit and electric capacity, the input of described door-plate unit is connected with the damping circuit of thyristor, and output is connected with thyristor.
Another preferred version of the present utility model: the input of described gate pole unit is connected the resistance terminal of damping circuit.
Another preferred version of the present utility model: the electric capacity in the described gate pole unit has a plurality of.
Another preferred version of the present utility model: the damping circuit of described thyristor is two.
Another preferred version of the present utility model: described gate pole comprises the alarm trigger circuit in the unit.
The big capacitor energy storage circuit principle design of the utility model utilization, the mode that adopts the thyristor terminal voltage to get energy obtain the DC converter valve thyristor and trigger and the protective circuit energy, and be simple and reliable.The gate pole unit at the valve end without any under the voltage condition, can guarantee that still the converter valve operate as normal is more than 0.7 second, therefore, no matter converter valve is still moved with inverter mode with the rectification pattern, be reduced to respective magnitudes and continue the corresponding time when fault in ac transmission system causes current conversion station ac bus voltage, energy storage device in all converter valve all still has enough energy to be continued to provide trigger impulse to the thyristor element, make the converter valve can safe conducting, and can not occur recovering to delay because of accumulator need charge with causing, the energy taking device volume that this programme provides is little, reliability is very high.
Description of drawings
Fig. 1 the utility model gate pole unit is got can schematic diagram
Fig. 2 the utility model gate pole element circuit principle schematic
Embodiment
As shown in Figure 1,2 damping circuits in parallel are not being considered under the situations such as volume, cost on the thyristor 2, can set what of damping circuit according to the size of voltage.A branch in 2 two RC damping circuits of the input of gate pole unit 1 and thyristor gets when the thyristor off-state can, be used to obtain electric weight and storage, as shown in Figure 2, the input of gate pole unit is connected the resistance terminal of thyristor damping circuit, and electric current flows into the back to each capacitor C from input 5 in the circuit of gate pole unit 1
1, C
2, C
3。。Charging, wherein what, capacity of electric capacity are decided on the size of voltage in the circuit, comprise control circuit 3 in the circuit and trigger amplifying circuit 4.The output 6 of gate pole unit 1 is connected with thyristor 2, utilizes the control circuit 3 in the circuit and triggers amplifying circuit 4 realization thyristors 1 triggering and status monitoring.The voltage of being fetched by the RC circuit is by big capacitor C
1, C
2The charging energy storage allows its both end voltage maintenances+60V, gives control circuit 3 power supplies, and control circuit 3 is to the capacitor C in the alarm trigger circuit
3Charging makes the voltage of its maintenance+10V, capacitor C
3Be in series with resistance R
Load, when powering-off state took place, the alarm trigger circuit start triggered amplifying circuit 4 and gives thyristor triggering and conducting signal.
After 1 energy storage of this programme gate pole unit is full of; at the converter valve end without any under the voltage condition; still can guarantee the converter valve operate as normal more than 0.7 second, obtained energy triggers for the DC converter valve thyristor and triggering amplifying circuit 4, the DC converter valve thyristor of protective circuit trigger and work such as protective circuit logical circuit, repayment signal circuit and opto-electronic conversion loop.
In gate pole unit 1 voltage was continuously stipulated time of 0, the storage capacitor discharging current must remain unchanged, and the voltage of capacitor discharge can not be lower than the minimum trigger voltage of thyristor, and electric capacity continuous discharge formula is as follows:
I=electric current wherein, C=electric capacity, the voltage drop that dv=electric capacity allows, dt=discharge period.
Obtain formula 2 according to formula 1 and calculate the storage capacitor value:
Under this capacity, no matter converter valve is still moved with inverter mode with the rectification pattern, when fault in ac transmission system causes that current conversion station ac bus voltage is reduced to 0, energy storage device in the converter valve all still has enough energy to be continued to provide trigger impulse to the thyristor element, make the converter valve can safe conducting, and can not occur recovering to delay because of accumulator need charge with causing.Adopt this method design storage capacitor value, guarantee that the energy of being got meets the demands fully.
The circuit of this programme converter valve thyristor can be applied under the various voltage condition, and the model that only needs to change corresponding capacitance, resistance gets final product.
Claims (5)
1. DC converter valve thyristor gate pole unit energy taking device, comprise thyristor (2) and gate pole unit (1), it is characterized in that, described thyristor (2) comprises damping circuit, described gate pole unit (1) comprises control circuit (3), triggers amplifying circuit (4) and electric capacity, the input (5) of described door-plate unit (1) is connected with the damping circuit of thyristor (2), and output (6) is connected with thyristor (2).
2. gate pole as claimed in claim 1 unit energy taking device is characterized in that the input (5) of described gate pole unit (1) is connected the resistance terminal of damping circuit.
3. gate pole as claimed in claim 2 unit energy taking device is characterized in that the electric capacity in the described gate pole unit (1) has a plurality of.
4. gate pole as claimed in claim 3 unit energy taking device is characterized in that the damping circuit of described thyristor (2) is two.
5. gate pole as claimed in claim 4 unit energy taking device is characterized in that, comprises the alarm trigger circuit in the described gate pole unit (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202774868U CN201570975U (en) | 2009-11-27 | 2009-11-27 | Gate pole unit energy acquiring device of direct current converter valve thyristor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202774868U CN201570975U (en) | 2009-11-27 | 2009-11-27 | Gate pole unit energy acquiring device of direct current converter valve thyristor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201570975U true CN201570975U (en) | 2010-09-01 |
Family
ID=42663275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202774868U Expired - Lifetime CN201570975U (en) | 2009-11-27 | 2009-11-27 | Gate pole unit energy acquiring device of direct current converter valve thyristor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201570975U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005906A (en) * | 2010-09-14 | 2011-04-06 | 中国电力科学研究院 | Novel large-capacity energy obtaining circuit of direct current converter valve thyristor triggering and monitoring unit |
| CN102158060A (en) * | 2011-03-02 | 2011-08-17 | 中国电力科学研究院 | Novel direct-current converter valve thyristor damping loop |
| CN104269996A (en) * | 2014-09-05 | 2015-01-07 | 中国西电电气股份有限公司 | Auxiliary energy-taking device and method for extra-high voltage converter valve running test |
| CN105720798A (en) * | 2014-12-04 | 2016-06-29 | 国家电网公司 | Equivalent circuit for high voltage direct current transmission converter valve based on damping power extracting circuit |
-
2009
- 2009-11-27 CN CN2009202774868U patent/CN201570975U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005906A (en) * | 2010-09-14 | 2011-04-06 | 中国电力科学研究院 | Novel large-capacity energy obtaining circuit of direct current converter valve thyristor triggering and monitoring unit |
| CN102158060A (en) * | 2011-03-02 | 2011-08-17 | 中国电力科学研究院 | Novel direct-current converter valve thyristor damping loop |
| CN102158060B (en) * | 2011-03-02 | 2014-12-03 | 中国电力科学研究院 | Novel direct-current converter valve thyristor damping loop |
| CN104269996A (en) * | 2014-09-05 | 2015-01-07 | 中国西电电气股份有限公司 | Auxiliary energy-taking device and method for extra-high voltage converter valve running test |
| CN104269996B (en) * | 2014-09-05 | 2016-09-14 | 中国西电电气股份有限公司 | Extra-high voltage converter valve operating test auxiliary energy taking device and method |
| CN105720798A (en) * | 2014-12-04 | 2016-06-29 | 国家电网公司 | Equivalent circuit for high voltage direct current transmission converter valve based on damping power extracting circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE GRID CORPORATION OF CHINA Free format text: FORMER OWNER: CHINA ELECTRIC POWER RESEARCH INSTITUTE Effective date: 20140326 Owner name: CHINA ELECTRIC POWER RESEARCH INSTITUTE Effective date: 20140326 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100192 HAIDIAN, BEIJING TO: 100031 XICHENG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140326 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: China Electric Power Research Institute Address before: 100192 Beijing city Haidian District Qinghe small Camp Road No. 15 Patentee before: China Electric Power Research Institute |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100901 |
|
| CX01 | Expiry of patent term |