摘要
针对750kV西宁-永登-白银输变电工程，使用电磁暂态程序（EMTP）计算了750kV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750kV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55kV。
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.
作者
谭海龙
席晓丽
项力恒
穆华宁
TAN Hai-long, XI Xiao-li, XIANG Li-heng, MU Hua-ning （Northwest Electric Power Design Institute, Xi＇an 710075, China）
