一种抑制固态断路器过电压的新方法  

Over-voltage suppression of solid-state circuit breaker

作　　者：张明锐[1] 金鑫[1] 刘金辉[1] 

机构地区：[1]同济大学电子与信息工程学院,上海201804

出　　处：《电力自动化设备》2012年第3期37-41,共5页Electric Power Automation Equipment

基　　金：教育部留学回国人员科研启动基金资助项目(08002410012);中央高校基本科研业务费专项资金资助项目(0800219169)~~

摘　　要：在分析短路电流开断过程中过电压产生机理和决定因素的基础上,提出一种新型的固态断路器拓扑结构,通过容性续流支路释放故障回路中的电磁能量,从而降低过电压幅值。对续流支路抑制过电压的工作过程和机理进行了分析,并给出了断路器的整体控制方法。为满足微型电网双向潮流的特殊应用,提出镜像结构的固态断路器拓扑。仿真结果表明,增加续流支路的固态断路器,过电压抑制效果明显。The cause and decisive factors of over-voltage during the breaking-off of solid-state circuit breaker with short-circuit current are analyzed and a new type of its topology is proposed,which releases the electromagnetic energy of faulty line through a capacitive current branch to reduce the amplitude of over-voltage.The principle of over-voltage suppression with current release branch is analyzed and the overall control of solid-state circuit breaker is brought forward.A ＂mirror＂ structure of solid-state circuit breaker is proposed to meet the requirement of micro-grid for bi-directional power flow.Simulative results demonstrate its obvious effectiveness in over-voltage suppression.

关 键 词：固态断路器 限流 过电压抑制 续流支路 微电网 

分 类 号：TM561[电气工程—电器]