| 引用本文: | 刘程卓,王渝红,龚鸿,王媛.一种适用于混合式高压直流断路器负载换流开关的新型缓冲电路[J].电力自动化设备,2018,(3): |
| LIU Chengzhuo,WANG Yuhong,GONG Hong,WANG Yuan.Novel snubber circuit for load commutation switch of hybrid HVDC breaker[J].Electric Power Automation Equipment,2018,(3): |
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| 摘要: |
| 基于混合式高压直流断路器的工作原理，提出了一种新型的负载换流开关缓冲电路。该电路通过2个绝缘栅双极型晶体管(IGBT)的简单控制，在混合式高压直流断路器分闸时，能阻断缓冲电容经超快速机械开关的放电通路；在混合式高压直流断路器短时间多次动作时，能保证缓冲电容每一次过电压的吸收效果，提高混合式高压直流断路器的速动性和可靠性。 |
| 关键词: 混合式高压直流断路器 负载换流开关 缓冲电路 柔性直流输电 IGBT |
| DOI：10.16081/j.issn.1006-6047.2018.03.028 |
| 分类号:TM561 |
| 基金项目:国家重点研发计划项目(SQ2017YFGX100043) |
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| Novel snubber circuit for load commutation switch of hybrid HVDC breaker |
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LIU Chengzhuo, WANG Yuhong, GONG Hong, WANG Yuan
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School of Electrical Engineering and Information, Sichuan University, Chengdu 610065, China
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| Abstract: |
| A novel snubber circuit for LCS(Load Commutation Switch) is proposed based on the principle of the hybrid HVDC(High Voltage Direct Current) breaker. Through the simple control of two IGBTs, the snubber circuit can protect the snubber capacitor from being discharged through UFD(Ultra Fast Disconnector) when breaker opening, and ensure that the snubber circuit has an effective absorption of overvoltage for the hybrid HVDC breaker’s several actions in a short period of time, which improves the quickness and reliability of the hybrid HVDC breaker. |
| Key words: hybrid HVDC breaker load commutation switch snubber circuit flexible HVDC power transmission Insulated Gate Bipolar Transistors(IGBT) |
