CN203311294U - Thyristor control unit for extra-high-voltage direct-current transmission converter valve - Google Patents
Thyristor control unit for extra-high-voltage direct-current transmission converter valve Download PDFInfo
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- CN203311294U CN203311294U CN2013203829811U CN201320382981U CN203311294U CN 203311294 U CN203311294 U CN 203311294U CN 2013203829811 U CN2013203829811 U CN 2013203829811U CN 201320382981 U CN201320382981 U CN 201320382981U CN 203311294 U CN203311294 U CN 203311294U
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- thyristor
- circuit
- voltage
- control unit
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Abstract
The utility model provides a thyristor control unit for an extra-high-voltage direct-current transmission converter valve. The thyristor control unit comprises a voltage detection circuit for detection voltages at two ends of a thyristor, a CPLD which is connected with the voltage detection circuit, an energy obtaining circuit for supplying energy to enable the thyristor control unit for the extra-high-voltage direct-current transmission converter valve to work, wherein the energy obtaining circuit obtains the energy from the voltages at the two ends of the thyristor; the output end of the energy obtaining circuit is connected with the input end of a power supply circuit by a voltage conversion circuit; the output end of the power supply circuit is used for supplying work voltages for different circuits by voltage division circuits. The thyristor control unit obtains the energy by the voltages at the two ends of the thyristor, a power supply is not required to be additionally arranged on a control board, a high pressure is converted into a voltage which is required by a control circuit after passing through the RC energy obtaining circuit and then the required voltage is conveyed into the power supply circuit, and then a power supply voltage is subjected to voltage division by the different voltage division circuits, so as to provide the normal work voltages for the different circuits.
Description
[technical field]
The utility model relates to a kind of thyristor electronic control unit.
[background technology]
Current thyristor electronic control unit, the voltage of its normal operation are all to be provided by additional power source, therefore, and whole control panel complex structure, and be inconvenient to carry.
[utility model content]
The utility model provides a kind of thyristor electronic control unit, and not needing additional power source namely to can be whole circuit provides normal working voltage.
For solving above technical matters, the utility model by the following technical solutions:
A kind of thyristor electronic control unit, comprise the voltage detecting circuit that detects the thyristor both end voltage, the CPLD be connected with voltage detecting circuit, and can circuit for getting of extra-high voltage direct-current transmission converter valve thyristor control unit work, the described voltage of energy circuit from the thyristor two ends of getting, the described output terminal of getting the energy circuit is connected to the input end of power circuit by voltage conversion circuit, the output terminal of described power circuit provides operating voltage by bleeder circuit for different circuit.
As preferred embodiment of the present utility model, the thyristor two ends are connected with the voltage build-up rate observation circuit, avoid the voltage change ratio at thyristor two ends to have when abnormal and cause thyristor breakdown.
As preferred embodiment of the present utility model, described control module further includes excess voltage protection, prevents that the thyristor overtension of having a surplus under the triggering state from causing thyristor breakdown.
As preferred embodiment of the present utility model, described extra-high voltage direct-current transmission converter valve is connected with logical device by light receiving signal with thyristor control unit, and described logical device is connected with the thyristor input end.
Compared with prior art, the utility model control system has the following advantages at least: the utility model is got by the thyristor both end voltage can, do not need control panel additional power source again, after through RC, getting the energy circuit, by high pressure converted, be the control circuit required voltage and deliver in power circuit, by different bleeder circuits, supply voltage is carried out to dividing potential drop again, for different circuit provides normal working voltage.
[accompanying drawing explanation]
Fig. 1 is the logic diagram of the utility model control module.
Fig. 2 is the circuit block diagram of the utility model control module.
[embodiment]
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Refer to illustrated in figures 1 and 2ly, a kind of trigger pip that responds carries out to thyristor the control circuit that triggered as normal, monitoring, protection are used, and comprising:
Getting can circuit, power circuit, electric voltage observation circuit, excess voltage protection (BOD), voltage build-up rate observation circuit (dv/dt), light transmit and receive circuit, CPLD circuit.The power supply of described thyristor electronic control unit can provide by circuit by getting, the described input end of getting the energy circuit is connected to thyristor two ends (namely getting the voltage of energy circuit from the thyristor two ends), the output terminal of getting the energy circuit is connected to the input end of power circuit by voltage conversion circuit, the output terminal of described power circuit provides operating voltage by bleeder circuit for different circuit.
The utility model by the thyristor both end voltage get can, then for control panel, provide when normal operation required voltage and current through power circuit.By the processing of light receiving signal process logical device, send trigger pip and protection and monitoring function are provided to thyristor.
The utility model to the automatically controlled thyristor of ETT trigger, the control circuit of monitoring, defencive function.When thyristor was worked, control module TEU can continue to monitor thyristor both end voltage value, voltage change ratio, and to thyristor transmission trigger pulse, trigger thyristor in the suitable time.The utility model thyristor control plate, function is more comprehensive, and the triggered time is more accurate.
The utility model is used the thyristor both end voltage to get and can just can work, and does not need control panel additional power source again.Through RC get can circuit after, by high pressure converted, be the control circuit required voltage and deliver in power circuit, then by different bleeder circuits, supply voltage is carried out to dividing potential drop, for different circuit provides normal working voltage.
When the thyristor both end voltage reached certain value, now VBE can give pulse signal of TEU, illustrates that thyristor is under the triggering state.The signal that process CPLD analysis thyristor status and VBE send, TEU can carry out normally to thyristor by sending trigger pip.If thyristor is overtension under the triggering state, excess voltage protection (BOD) will conducting, and now TEU will directly send trigger pip to thyristor and make its conducting, thereby prevents that thyristor is breakdown, and sends it back the number of notifying to VBE.
When the triggering state finished, VBE can give pulse signal of TEU, illustrates that thyristor is in off state.When now if TEU monitors the thyristor both end voltage lower than certain value, TEU will send negative voltage repayment signal to VBE.
The thyristor conducting completes the moment of recovering normal condition, is called reverse recovery, and now thyristor is very responsive to the rate of change of both end voltage.Now voltage change ratio (dv/dt) slightly has sudden change, and thyristor just can be breakdown.In reverse recovery, abnormal if TEU monitors voltage build-up rate (dv/dt), through CPLD, analyze, will send the trigger pulse triggers thyristor to thyristor and prevent that it is breakdown, and send it back the number of notifying to VBE.
After reverse recovery finished, thyristor was in status monitoring constantly, and now TEU will send the inquiry repayment to VBE.
After TEU receives the signal that VBE sends at every turn, through the processing of CPLD, according to the residing different conditions of thyristor in the same time not, produce and trigger accordingly, protect and repay signal.Because signal is produced by logical device, so signal amplitude, time are more accurate, function is more comprehensive.
Claims (4)
1. extra-high voltage direct-current transmission converter valve thyristor control unit, it is characterized in that: comprise the voltage detecting circuit that detects the thyristor both end voltage, the CPLD be connected with voltage detecting circuit, and can circuit for getting of extra-high voltage direct-current transmission converter valve thyristor control unit work, the described voltage of energy circuit from the thyristor two ends of getting, the described output terminal of getting the energy circuit is connected to the input end of power circuit by voltage conversion circuit, the output terminal of described power circuit provides operating voltage by bleeder circuit for different circuit.
2. a kind of extra-high voltage direct-current transmission converter valve thyristor control unit as claimed in claim 1, it is characterized in that: the thyristor two ends are connected with the voltage build-up rate observation circuit, avoid the voltage change ratio at thyristor two ends to have when abnormal and cause thyristor breakdown.
3. a kind of extra-high voltage direct-current transmission converter valve thyristor control unit as claimed in claim 1; it is characterized in that: described control module further includes excess voltage protection, prevents that the thyristor overtension of having a surplus under the triggering state from causing thyristor breakdown.
4. a kind of extra-high voltage direct-current transmission converter valve thyristor control unit as claimed in claim 1, it is characterized in that: described extra-high voltage direct-current transmission converter valve is connected with logical device by light receiving signal with thyristor control unit, and described logical device is connected with the thyristor input end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203829811U CN203311294U (en) | 2013-06-28 | 2013-06-28 | Thyristor control unit for extra-high-voltage direct-current transmission converter valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203829811U CN203311294U (en) | 2013-06-28 | 2013-06-28 | Thyristor control unit for extra-high-voltage direct-current transmission converter valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203311294U true CN203311294U (en) | 2013-11-27 |
Family
ID=49617490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203829811U Expired - Lifetime CN203311294U (en) | 2013-06-28 | 2013-06-28 | Thyristor control unit for extra-high-voltage direct-current transmission converter valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203311294U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107765159A (en) * | 2016-08-23 | 2018-03-06 | 株洲中车时代电气股份有限公司 | IGCT on-Line Monitor Device |
-
2013
- 2013-06-28 CN CN2013203829811U patent/CN203311294U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107765159A (en) * | 2016-08-23 | 2018-03-06 | 株洲中车时代电气股份有限公司 | IGCT on-Line Monitor Device |
| CN107765159B (en) * | 2016-08-23 | 2019-08-23 | 株洲中车时代电气股份有限公司 | Thyristor on-Line Monitor Device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: XI'AN XD POWER SYSTEMS Co.,Ltd. Assignor: CHINA XD ELECTRIC Co.,Ltd. Contract record no.: 2014610000074 Denomination of utility model: Thyristor control unit for extra-high-voltage direct-current transmission converter valve Granted publication date: 20131127 License type: Exclusive License Record date: 20140423 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131127 |