1000kV GIS中快速暂态过电压抑制措施研究  

Research on Protection Measure for VFTO of 1 000 kV GIS Substation

作　　者：钟笑拳 周力行[1] 刘涛[1] 何腾芳 逄伟 陈锦麟[1] 

机构地区：[1]长沙理工大学电气与信息工程学院,长沙410076 [2]南昌轨道交通设计研究院有限公司,南昌330100

出　　处：《电瓷避雷器》2013年第6期119-123,共5页Insulators and Surge Arresters

摘　　要：随着电力系统电压等级的升高,气体绝缘变电站(GIS)得到了广泛的应用。由隔离开关(DS)操作引起的特快速暂态过电压(VFTO)引发的事故越来越多,对GIS本体和变压器都造成了极大的危害。为此采用电磁暂态程序(ATP-EMTP)仿真计算了某1000kV GIS中由隔离开关操作引起的VFTO,获得了多种操作方式下各节点的VFTO电压幅值和波形。并分别模拟了加装避雷器、分闸电阻、铁氧体磁环几种抑制措施了对VFTO的抑制效果。With the increase of the power system voltage level,gas insulated substation（GIS） has been widely used. The very fast transient overvoltage （VFTO） caused by operations of disconnectors （DS）, has triggered off more and more accidents, and has caused great harm for the GIS ontology and transformer. To simulate and calculate VFTO caused by DS operation in a 1 000 kV GIS, and acquire the VFTO voltage amplitude and waveform of each node under different operations using the electromagnetic transient program （ATP-EMTP）. Furthermore, to simulate the inhibition effect of VFTO respectively after loading metal oxide arrester, break-brake resistance, and ferrite rings.

关 键 词：GIS 隔离开关 特快速暂态过电压 电磁暂态程序 防护措施 

分 类 号：TM86[电气工程—高电压与绝缘技术]