固态断路器过电压分析

固态断路器是基于电力电子元件的新型无触点开关器件,具有体积小、使用寿命长、动作速度快等特点,能够在故障电流上升到危害电力设备前就能将故障线路切断。固态断路器的快速动作以及高截流的特性使得其在开断时,固态断路器的两端以及所在线路上的其它电力设备都将承受操作过电压。本文分析了固态断路器在10kV配电网环境中过电压的产生的原因及大小,对集中参数过电压等效模型进行理论推导,并应用仿真软件对分布式参数等效模型进行仿真,以验证集中参数等效模型在分析固态断路器过电压的有效性。

Over-voltage Analysis of Solid State Circuit Breaker

Solid-state circuit breaker is a new type of contactless switching device based on power electronics components with the characters of small size, long life and fast action, which can cut off the fault line before the fault current rise to damage electrical equipment. However, due to the fast action and high closure of solid-state circuit breaker, the solid-state circuit breaker and other equipment on the same line will bear operation over-voltage at the moment of breaking off the load. The causes and ampli...