龙政直流系统换相失败故障分析

Analysis of the Commutation Failure in Long-zheng HVDC System

从直流输电系统最基本的换相过程出发,对换相失败发生的原因、过程及软件中的逻辑原理进行了探讨。通过龙泉、政平换流站的两次换相失败的故障录波实例,详细分析了换相失败各参数的变化及其过程,揭示了换相失败发生故障的原因。

In this paper,according to the commutation process of HVDC transmission system,the causes and process of commutation failure,as well as the logic principle of software are discussed firstly.Then,based on two fault record examples about the commutation failure of Longquan and Zhengping converter substations,the variation and process of related parameters during the commutation failures are analyzed in detail,and the corresponding failure causes are also revealed.