摘要
研制了一种具有快速熄灭工频续流电弧能力的新型防雷保护间隙。该间隙的最大特点是:热容量巨大、灭弧反应时间小于5 ms,能可靠、快速切断相间短路时流过间隙的工频续流,大幅度减少由工频续流引起的雷击跳闸。新型防雷保护间隙结构合理,安装方便,造价低廉,现场运行情况良好,适合大范围推广应用。
A new parallel gap lightning protection device is developed which has the capability of rapid arc extinction of power-flow current. Some key characteristics of the gap are as follows： huge heat capacity, responds time of arc extinction less than 5ms, cut off reliably and rapidly the power-flow current of the gap caused by inter-phase short circuit, reduce greatly the trip rate caused by power-flow current. The new gap lightning protection device has reasonable structure, easy installation, low price, good condition during operation, and thus is suitable for large scale popularization and application.
出处
《广西电力》
2009年第2期11-13,31,共4页
Guangxi Electric Power
基金
国家自然科学基金项目(50867002)
广西壮族自治区研究生教育创新计划项目
关键词
防雷
灭弧间隙
工频续流
lightning protection, expulsion gap, power-flow current
