CN213937428U - Voltage-sharing and protecting system for high-voltage thyristors in series connection - Google Patents
Voltage-sharing and protecting system for high-voltage thyristors in series connection Download PDFInfo
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- CN213937428U CN213937428U CN202022485690.8U CN202022485690U CN213937428U CN 213937428 U CN213937428 U CN 213937428U CN 202022485690 U CN202022485690 U CN 202022485690U CN 213937428 U CN213937428 U CN 213937428U
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Abstract
A voltage-sharing and protecting system for a plurality of high-voltage thyristors connected in series comprises a voltage-sharing detecting circuit, a thyristor protecting circuit, an optical fiber transmitting circuit and a data processing circuit; the voltage-sharing detection circuit and the thyristor protection circuit are connected to two ends of the thyristor in parallel; and the voltage-sharing detection circuit and the thyristor protection circuit are connected with the data processing circuit through the optical fiber sending circuit. The utility model discloses a both ends parallel connection voltage-sharing detection circuitry and thyristor protection circuit at every thyristor, the alarm signal that rethread optic fibre transmitting circuit sent voltage-sharing detection circuitry or thyristor protection circuit handles and in time reports to the police in passing data processing circuit, can improve the security of device, has avoided taking place more extensive failure incident, guarantees the reliable operation of system.
Description
Technical Field
The utility model relates to a voltage-sharing and protection system of a plurality of series thyristors of high pressure.
Background
The power device of the high-power rectifier is usually a high-power thyristor, and as the voltage of the main loop becomes higher and higher, a single thyristor cannot meet the voltage requirement, and usually a plurality of thyristors are used in series.
The series connection of a plurality of thyristors brings about a plurality of problems, particularly, the voltage equalizing and protection of the thyristors can bring about great hidden dangers to the thyristors and even break down the thyristors if the thyristors are not monitored and processed.
SUMMERY OF THE UTILITY MODEL
The utility model discloses its aim at just provides a voltage-sharing and protection system of a plurality of series thyristors of high pressure to solve the problem among the above-mentioned background art, have the characteristics that can improve the security of device, avoided taking place more extensive failure incident, guarantee the reliable operation of system.
The technical scheme adopted for achieving the purpose is that the voltage-sharing and protecting system for the plurality of thyristors connected in series in the high-voltage circuit comprises a voltage-sharing detecting circuit, a thyristor protecting circuit, an optical fiber transmitting circuit and a data processing circuit; the voltage-sharing detection circuit and the thyristor protection circuit are connected to two ends of the thyristor in parallel; and the voltage-sharing detection circuit and the thyristor protection circuit are connected with the data processing circuit through the optical fiber sending circuit.
Advantageous effects
Compared with the prior art, the utility model has the following advantages.
The utility model has the advantages that, a plurality of thyristors are established ties in this system can solve present high-voltage circuit, and there is the problem that the thyristor is punctured and leads to taking place bigger scope failure incident along with the voltage of major loop is higher and higher, has the characteristics that can improve the security of device, has avoided the device to take place more extensive failure incident, guarantees the reliable operation of system.
Drawings
The present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a schematic block diagram of the present invention;
in the figure: 1. voltage-sharing detection circuit, 2, thyristor protection circuit, 3, optic fibre transmitting circuit, 4, data processing circuit.
Detailed Description
The present invention will be further described with reference to the following embodiments and the accompanying drawings.
The system comprises a voltage-sharing detection circuit 1, a thyristor protection circuit 2, an optical fiber sending circuit 3 and a data processing circuit 4; as shown in fig. 1, the voltage-sharing detection circuit 1 and the thyristor protection circuit 2 are both connected to two ends of a thyristor in parallel; the voltage-sharing detection circuit 1 and the thyristor protection circuit 2 are both connected with the data processing circuit 4 through the optical fiber sending circuit 3.
The utility model is used for the voltage condition of monitoring thyristor both ends and protect it, when the deviation value that the both ends voltage of a plurality of thyristors of establishing ties exists is greater than the specified value in the high-voltage circuit, voltage-sharing detection circuitry 1 and thyristor protection circuit 2 provide the warning in time; the reverse turn-off voltage of the single thyristor exceeding the V of the thyristorRRMIn time, the voltage-sharing detection circuit 1 and the thyristor protection circuit 2 provide alarm and protect the thyristor in time, so that the thyristor is prevented from being broken down.
The utility model discloses during the concrete implementation, constitute a little black box and the thyristor installation nearby by the monitoring with voltage-sharing detection circuitry 1, thyristor protection circuit 2 and optical fiber transmission circuit 3. The voltage-sharing detection circuit 1 and the thyristor protection circuit 2 are connected in parallel at two ends of the tested thyristor, and the alarm signal is transmitted to the data processing circuit 4 through the optical fiber transmission circuit 3 to be processed and alarm in time, so that the safety of the device can be improved, the failure event in a larger range is avoided, and the reliable operation of the system is ensured.
Claims (1)
1. A voltage-sharing and protecting system for a plurality of high-voltage thyristors connected in series comprises a voltage-sharing detection circuit (1), a thyristor protecting circuit (2), an optical fiber sending circuit (3) and a data processing circuit (4); the voltage-sharing detection circuit is characterized in that the voltage-sharing detection circuit (1) and the thyristor protection circuit (2) are connected to two ends of a thyristor in parallel; the voltage-sharing detection circuit (1) and the thyristor protection circuit (2) are connected with the data processing circuit (4) through the optical fiber transmission circuit (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022485690.8U CN213937428U (en) | 2020-11-02 | 2020-11-02 | Voltage-sharing and protecting system for high-voltage thyristors in series connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022485690.8U CN213937428U (en) | 2020-11-02 | 2020-11-02 | Voltage-sharing and protecting system for high-voltage thyristors in series connection |
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| Publication Number | Publication Date |
|---|---|
| CN213937428U true CN213937428U (en) | 2021-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022485690.8U Active CN213937428U (en) | 2020-11-02 | 2020-11-02 | Voltage-sharing and protecting system for high-voltage thyristors in series connection |
Country Status (1)
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| CN (1) | CN213937428U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116488112A (en) * | 2023-06-19 | 2023-07-25 | 北京燕能电气技术有限公司 | 10 kilovolt overhead line capacitor electricity-taking high-voltage protection circuit |
-
2020
- 2020-11-02 CN CN202022485690.8U patent/CN213937428U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116488112A (en) * | 2023-06-19 | 2023-07-25 | 北京燕能电气技术有限公司 | 10 kilovolt overhead line capacitor electricity-taking high-voltage protection circuit |
| CN116488112B (en) * | 2023-06-19 | 2023-09-01 | 北京燕能电气技术有限公司 | 10 kilovolt overhead line capacitor electricity-taking high-voltage protection circuit |
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