GIS隔离开关开合母线转换电流研究
刘小浩
(ABB电网投资(中国)有限公司厦门分公司,福建 厦门 361000)
摘 要:介绍了双母线变电站中隔离开关所需开合的母线转换电流能力要求差异,计算了隔离开关所需开合的母线转换电流和断口电压大小,给出了提高隔离开关母线转换电流能力的措施,并以 252 kV GIS 隔离开关为例,证明了提高分合闸速度的设计对高参数母线转换电流试验的有效性。
关键词:双母线变电站;隔离开关;母线转换电流
中图分类号:TM564.1 文献标识码:A 文章编号:1007-3175(2021)12-0027-04
Research on Bus-Transfer Current Switching of GIS Disconnector
LIU Xiao-hao
(ABB Power Grids Investment (China) Limited Xiamen Branch, Xiamen 361000, China)
Abstract: This article introduced the difference in the bus-transfer current switching requirements required by the disconnector in the double busbar substation. It calculated bus switching current and fracture voltage for the needs of the disconnector. It also provided suggestions for the current conversion capability of the disconnector.This work takes the 252 kV GIS disconnector as an example. It proves that the switch design for the speed improvement of the opening and closing is effective for the high-parameter bus-transfer current test.
Key words: double busbar substation; disconnector; bus-transfer current
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