线路复合绝缘子鸟啄情况调查及原因分析

复合绝缘子作为防污闪的主要设施,已在我国输电线路中得到了广泛应用。2005年在我国跨区电网输电线路的检修运行工作中多次出现了复合绝缘了被鸟啄食的情况,直接威胁了电网的安全运行,国家电网公司组织了联合调查组对鸟害重点地区(河南、湖北以及浙江三省)的四条500kV交、直流线路进行了现场调研。结果发现,鸟啄现象主要出现在线路不带电的情况下,且复合绝缘子的不同伞形和悬挂方式对鸟的影响较大,其他更多的影响因素还有待更深入的研究才能确定。

Investigation on Bird Damage to Composite Insulators of 500kV Transmission Lines

As a very important anti-pollution flashover measure, composite insulators are widely used in domestic pewer grids. In the year of 2005 it is often found in the maintenace of domestic inter-area transmission lines that composite insulators are pecked, this phenomenon directly threatens the secure operation of power system. For this reason, State Grid Corp. of China organized joint on-site investigation for four 500kV AC/DC transmission lines located in Henan, Hubei and Zhejiang provinces where the bird damage is severe, and it was found that the pecking phenomena mainly happened in the un-energized transmission lines, and the bird pecking is considerably effected by different shed shapes of composite insultors and suspension types, and it remains to be deeply studied for other factors influencing the brid pecking.