基于真空灭弧室和SF_6灭弧室串联的混合断路器技术发展与研究现状

在归纳国内外高压开关研究现状的基础上,综述了混合断路器技术的发展历史与研究现状,分析了真空电弧与SF6电弧的相互作用机理,研究了混合断路器的动态绝缘特性并得到混合断路器中两灭弧室相互作用的关键区间,对比说明了现有混合断路器样机的结构及控制特点,阐明了进一步研究混合断路器技术亟需解决的主要问题。认为应尽快探明两灭弧室触头动作的最优控制策略,得出不同开断容量的SF6灭弧室与真空灭弧室串联后其开断容量增益曲线,为混合断路器的工业化应用提供重要的理论基础。

Development and Current Status of Hybrid Circuit Breaker Technology Based on Vacuum Interrupter and SF6 Interrupter in Series

Based on the induction of research status of high-voltage switch,this paper summarizes the development and current status of hybrid circuit breaker technology,analyzes the interaction principle between vacuum arc and SF6 arc,studies the dynamic insulating property of hybrid circuit breaker and obtains the key interactive region between vacuum arc and SF6 arc,contrast describes the structure and control features of existing hybrid circuit breaker prototypes,clarifies the major problems of hybrid circuit breaker need to be further researched.The author concludes that the optimal control policy of contacts action should be verified,the breaking capacity gain curve of hybrid circuit breaker should be obtained when different vacuum interrupter and SF6 interrupter in series,which will provide an important theoretical basis for the industrial application of hybrid circuit breaker.