This article summarizes the application and key technology of phase controlled HV circuit breaker in recent years.
本文综述了近年来相位控制高压断路器的应用概况和关键技术。
So it is necessary to develop the on-line monitoring and fault diagnosis for the real-time state of he HV circuit breaker.
高压断路器大部分故障源于机械方面，因此研究机械故障具有重要的意义。
The paper describes the reasons of renewal, the endurance and the affecting factors of HV circuit breaker as well as the condition of renewal.
高压断路器关系到电力系统的安全运行，对断路器状态进行在线监测有助于提高系统的可靠性。
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