750 kV同塔双回线路接地开关的选择研究  

Study on the Selection of Grounding Switch for 750 kV Double-circuit Transmission Lines on Same Tower

作　　者：谭海龙[1] 席晓丽[1] 项力恒[1] 穆华宁[1] 

机构地区：[1]西北电力设计院,陕西,西安,710075 西北电力设计院,陕西,西安,710075 西北电力设计院,陕西,西安,710075 西北电力设计院,陕西,西安,710075

出　　处：《电网与水力发电进展》2007年第9期39-42,共4页

摘　　要：针对750 kV西宁-永登-白银输变电工程,使用电磁暂态程序(EMTP)计算了750 kV同塔双回线路的感应电流、电压.通过对计算结果的分析并结合IEC标准,提出本工程750 kV同塔双回线路接地开关的参数要求:电磁感应电流和电磁感应电压及静电感应电流满足B类标准要求,静电感应电压超出B类标准.要求为55 kV.This paper calculates the induction voltage and current of double-circuit transmission line on same tower in 750 kV xining-Yongdeng-Baiying project by EMTP.This paper calculates the induction voltage and current of 750kV double-circuit transmission line on same town using by Emtp.Based on the calculation results and IEC standard,the grounding switch's parameter is presented.For the grounding switch of this project,electromagnetic induction current and voltage and electrostatic induction current must meet type B standard.And electrostatic induction voltage exceeds the require of type B standard,that is 55 kV.

关 键 词：750KV同塔双回线路 感应电压 感应电流 接地开关 电磁暂态程序 

分 类 号：TM767[电气工程—电力系统及自动化]