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.
出处
《电力自动化设备》
EI
CSCD
北大核心
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)~~
关键词
固态断路器
限流
过电压抑制
续流支路
微电网
solid-state circuit breaker
current restriction
over-voltage suppression
current release circuit
micro-grid
