750kV同塔双回输电线路带电作业体表场强分析  

Analysis of body surface field strength for live working on 750 kV double-circuit transmission line

作　　者：杨雅倩 罗日成[1] 吴东[1] 史志强[1] 郭天伟[1] 李腾飞[1] 

机构地区：[1]长沙理工大学电气与信息工程学院,湖南长沙410004

出　　处：《电力科学与技术学报》2017年第2期158-165,共8页Journal of Electric Power Science And Technology

基　　金：国家自然科学基金(50977003);电力与交通安全监控及节能技术教育部工程研究中心基金(2010#03)

摘　　要：以兰州东—平凉—乾县这条输电线路为研究对象,研究750 kV同塔双回输电线路带电作业人员体表场强分布情况。采用Ansoft电磁场仿真软件,计算分析各典型作业位置处工作人员体表各部位场强大小,研究一回停电工况下,该回线路上人体体表场强分布情况。分析结果表明:头和脚为场强最大处,其中两回不停电时,等电位处作业人员体表场强高达1 084.9 kV/m,为确保作业人员的人身安全需穿戴屏蔽效率为60 dB的屏蔽服;一回停电情况下作业人员各典型位置处体表场强均小于240 kV/m,穿戴普通屏蔽服即可满足要求。Taking the transmission line throughout Lanzhoudong-Pingliang-Ganxian as an example, the staff body surface field strength distribution in 750 kV transmission lines during the live working in the double-circuit lines on a same tower was researched in this paper. The body surface field strength of each typical position was calculated with the Ansoft electromagnetic simulation software, and the field strength distribution of the body surface was analyzed on the condition that one transmission line is outage and another is normal operation. The analysis results show that the head and feet have maximum field strength. In the case of two-circuit working in normal condition, the electric field strength on the worker’s body surface is up to 1 084.9 kV/ m at the equipotential place. To ensure the physical safety of operators, a 60 dB screening clothe is indispensably wore under live working. Because the operators’ electric field strength of each typical position are all less than 240 kV/m in the case of one transmission line normal and another outage, wearing an ordinary screening clothe can meet the requirements. Key word： 750 kV double-circuits on a same tower; live working; field strength on body surface; safety protection

关 键 词：750kV同塔双回 带电作业 体表场强 安全防护 

分 类 号：TM84[电气工程—高电压与绝缘技术]