引用本文: | 张明锐,金 鑫,刘金辉.一种抑制固态断路器过电压的新方法[J].电力自动化设备,2012,32(3): |
| ZHANG Mingrui,JIN Xin,LIU Jinhui.Over-voltage suppression of solid-state circuit breaker[J].Electric Power Automation Equipment,2012,32(3): |
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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。 |
关键词: 固态断路器 限流 过电压抑制 续流支路 微电网 |
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基金项目: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) |
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Over-voltage suppression of solid-state circuit breaker |
ZHANG Mingrui, JIN Xin, LIU Jinhui
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Tongji University,Shanghai 201804,China
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Abstract: |
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. |
Key words: solid-state circuit breaker current restriction over-voltage suppression current release circuit micro-grid |