用于VSC-HVDC的混合式高压直流断路器运行试验方法

Hybrid HVDC Circuit Breaker Operation Test for VSC-HVDC

混合式高压直流断路器是直流成网的核心设备之一,为验证直流断路器设计的合理性和正确性,准确反映直流断路器电、热与机械等性能,需要对高压直流断路器运行试验进行研究。该文以交流断路器、换流阀等同类产品的试验标准作参照,对高压直流断路器的运行试验项目进行了研究。首先介绍了运行试验所用试验回路的工作原理,并对各个时刻相关设备的工作状态进行了分析;然后以83 k V样机为试品成功完成了运行试验,为将来进行更高电压等级的高压直流断路器运行试验提供参考。

Hybrid high voltage DC （HVDC） circuit breaker is one of the core equipment of DC power grid. In order to test and verify the rationality and validity of DC circuit breaker design, and accurately reflect the electrical, thermal and mechanical performance of DC circuit breaker, it is needed to study the operation test of HVDC circuit breaker. Taking the test standards of AC circuit breaker, converter valve and other similar products as reference, this paper studies the operation test item of HVDC circuit breaker. Firstly, we introduce the working principle of the test circuit used in operation test, and analyze the working conditions of related equipment at various moments. Then, we successfully complete a 83 kV prototype sample operation test, which can provide reference for HVDC circuit breaker with higher voltage level in the future.