500kV紧凑型线路V型绝缘子串球头脱落的预防措施  

Execution of Prevention of Ball Head Drop-out of V-shaped Insulators on 500 kV Compact Type Transmission Lines

作　　者：姚文军[1] 刘春田[1] 张海军[1] 段文运[1] 龚延兴[1] 吴建军[1] 赵雪松[1] 

机构地区：[1]北京超高压公司,北京市100045

出　　处：《电力建设》2006年第7期8-10,共3页Electric Power Construction

摘　　要：500 kV紧凑型输电线路上相导线V型绝缘子串,在大风条件下,下端合成绝缘子串球头与碗头挂板脱开,致使导线脱位,是一种必须引起足够关切的故障。在对该故障原因进行受力分析的基础上,提出加装卡箍、用插板代替R形销和改变绝缘子串与六线联板的连接方式等3种预防措施加以解决。The lower ball head of the V - shaped compound insulator of the upper phase conductor for a 500 kV compact type transmission line was separated from the bowl suspension plate under the large wind condition, which resulted in the shift position of the conductor. The failure must attract the serious attention. The analysis on the forces applied is carried out. The 3 kinds of measures to prevent from it are introduced, including installation of slip - collar, R - shaped plugging plate and plugging plate with bolts. These measures have been used in retrofitting 500 kV lines of North China Power Grid.

关 键 词：500 kV紧凑型线路 上相导线V型绝缘子串 球头脱开 原因分析 预防措施 

分 类 号：TM752[电气工程—电力系统及自动化]