基于不平衡绝缘的同塔多回输电线路差异化防雷技术及应用  

Differentiated Lightning Protection Technology and Its Application Based on Unbalanced Insulation for Multi-circuit Power Transmission Lines on the Same Tower

作　　者：彭向阳 王锐 周华敏 毛先胤 

机构地区：[1]广东电网有限责任公司电力科学研究院,广东广州510080 [2]广东电网有限责任公司,广东广州510060

出　　处：《广东电力》2016年第6期109-116,共8页Guangdong Electric Power

摘　　要：在分析广东电网同塔线路防雷运行数据基础上,提出了广东电网同塔线路防雷技术路线和差异化防雷策略,并介绍了增加绝缘子片数、加装线路避雷器、加装绝缘子并联间隙等三种典型不平衡绝缘配置方案,明确了不平衡绝缘差异化防雷措施的选择原则,最后介绍了不平衡绝缘防雷技术在广东电网的应用情况和效果。运行经验表明,基于不平衡绝缘的差异化防雷技术可有效解决同塔线路雷击同跳问题,建议在南方电网以及我国多雷区、强雷区同塔多回输电线路推广应用。On the basis of analyzing running data of lightning protection of power transmission lines on the same tower in Guangdong power grid,this paper presents technical routes for lightning protection and differentiated lightning protection strategy.It introduces three kinds of typical unbalanced insulation configuration schemes including increasing insulator numbers,installing line arrestors and installing parallel gaps of insulators.It makes clear selection principles for unbalanced insulation differentiated lightning protection measures and introduces application and effects of unbalanced insulation lightning protection technology in Guangdong power grid.Operational experiences indicate that this differentiated lightning protection technology based on unbalance insulation is able to effectively solve the problem of lightning tripping of power transmission lines on the same tower at the same time.It is suggested to popularize and apply this technology in multi-circuit transmission lines on the same tower in CSG and other areas with more and strong lightning activities.

关 键 词：同塔多回线路 雷击同时跳闸 不平衡绝缘 差异化防雷 线路避雷器 绝缘子并联间隙 

分 类 号：TM866[电气工程—高电压与绝缘技术]