750 kV紧凑型同塔双回输电线路带电作业进入等电位方法  

Equipotential Method for Live Operation of 750kV Compact Double Circuit Transmission Lines on the Same Tower

作　　者：石毅 王国满 朱传刚 葛雄 吴玮华[2] SHI Yi;WANG Guo-man;ZHU Chuan-gang;GE Xiong;WU Wei hua(State Grid Hubei Electric Power Company Maintenance Company,Operation and Maintenance Division,Jingmen 448000,China;College of Electrical Engineering and New Energy,China Three Gorges University,Yichang 443002,China)

机构地区：[1]国网湖北省电力有限公司检修公司荆门运维分部,湖北荆门448000 [2]三峡大学电气与新能源学院,湖北宜昌443002

出　　处：《通信电源技术》2018年第7期24-26,共3页Telecom Power Technology

摘　　要：750kV紧凑型同塔双回输电线路由于塔头间隙紧凑型布置,导致等电位作业人员作业难度大。根据现有750kV常规线路的带电作业技术,提出了几种常用的进电位路径方案,通过计算几种方案的组合间隙,得到较安全的进入等电位路径。利用Ansoft软件计算了在组合间隙最小位置的人体表面场强,获取了其表面场强的大小分布。仿真计算结果表明,攀爬软梯法进入上相导线等电位过程中,作业人员可满足安全要求。750 kV compact double circuit transmission lines on the same tower are difficult to operate due to the compact layout of the head gap.According to the electrified operation technology of existing conventional 750 kV lines,several common potential path schemes were proposed.By calculating the combination gap of several schemes,the safe entry potential path was obtained.Ansoft software was used to calculate the surface strength of the body at the minimum position of the combined gap,and the size distribution of the surface field strength was obtained.The simulation results showed that the climbing ladder can enter the equipotential process of the upper phase conductor,and the workers can meet the safety requirements.

关 键 词：750kV紧凑型同塔双回线路 带电作业 进入等电位 组合间隙 人体表面场强 

分 类 号：TM75[电气工程—电力系统及自动化]