摘要
国内外对GIS中快速暂态过电压(VFTO)进行过大量的计算研究,技术相对比较成熟,但是在现场测量方面还存在很多技术障碍需要研究和攻克。本文全面介绍内部、外部陡波前过电压和瞬态外壳地电位抬高(TGPR)3种特快速暂态过电压的现场测量方法,并介绍了兰州东750 kV GIS断路器投切空线的VFTO实测结果,为今后现场特快速暂态过电压的测量提供了可借鉴的思路和方法。
Very fast transient overvohage （VFTO）in GIS has been abundantly researched in China and abroad. The technology is relatively mature, but there are still some technology problems in practical measure. Three practical measure methods for the very fast transient overvohage that are inside ＆ outside very fast transient overvohage and transient enclosure ground potential rise（TGPR）are introduced in this paper. This paper also gives the circuit breaker＇s VFTO measure dresuhs in switching of no-loaded lines for 750 kV GIS in eastern Lanzhou, which provide a direction for field measuring the very fast transient overvoltage.
出处
《陕西电力》
2009年第9期29-32,共4页
Shanxi Electric Power
关键词
750
KV
GIS变电站
特快速暂态过电压
现场测量
投切空线
750 kV
GIS substation
very fast transient overvoltage
practical measurement
switching of no-loaded lines
