750kV GIS中VFTO峰值  

VFTO Magnitude Values on the 750kV GIS

作　　者：李云阁 侯清川 周斌 尚勇 

机构地区：[1]西北电网有限公司,西安710048

出　　处：《电网与清洁能源》2010年第12期8-11,16,共5页Power System and Clean Energy

摘　　要：自我国750 kV工程投运以来,GIS中的VFTO一直是关注的焦点之一。2009年在750 kV官亭变电站实测了VFTO。通过分析现场实测波形,得出了VFTO峰值。用外推法计算了最大VFTO峰值和上升速度,分别为2.46 pu和12.64 pu/s。通过比较,认为现阶段限制VFTO的有效措施为在隔离开关中装设合/分闸电阻。Since the 750 kV pilot project in China startedoperating,VFTO on the GIS has been one of the focuses of concern.Afield test was carried out at the 750 kV Guanting Substation in 2009.In this paper the on-site recorded VFTO wave forms are analyzed,and the VFTO magnitude at different operation modes is achieved.The possible maximum of the magnitude and rise rate are extrapolated,which are 2.46 pu and 12.64 pu/s,respectively.Basedon the comparisons,the current research suggested that the closing/opening resistors should be equipped in disconnectors to effectively suppress VFTO.

关 键 词：750kV GIS 隔离开关 VFTO 合/分闸电阻 

分 类 号：TM216[一般工业技术—材料科学与工程]