摘要
对某220 kV输电线路跳闸故障进行分析,根据故障监测信息、故障时段故障区域的天气、现场环境等综合判断故障原因为鸟粪闪络,而造成鸟粪闪络的主要原因为跳线角钢未用绝缘护套包覆,鸟类夜间栖息在架空地线防振锤处排便,鸟粪在湿度80%RH、微风条件下降落,短接跳线角钢端头和地线防振锤间电气间隙而引起闪络放电。对绝缘护套的防鸟害效果进行仿真分析,得出了不同电压等级线路绝缘护套的最佳厚度,提出了防范类似鸟害故障的措施。
The tripping fault of a 220 k V transmission line was analyzed,and the fault cause was judged to be guano flashover according to the fault monitoring information,the weather in the fault area during the fault period and the site environment.The main cause of guano flashover was that the jumper angle steel was not covered with insulation sheath.Birds defecated at night when they perched on the overhead ground wire anti-vibration hammer,and the guano dropped in the condition of humidity 80%RH and breeze.The simulation analysis of the anti-bird effect of the insulation sheath further proved the fault reason and obtained the best thickness of the insulation sheath of the line with different voltage grades.The measures to prevent similar bird damage faults were put forward.
作者
伍弘
徐兆国
刘世涛
杨凯
WU Hong;XU Zhaoguo;LIU Shitao;YANG Kai(Power Research Institute of State Grid Ningxia Electric Power Co.,Ltd.,Yinchuan Ningxia 750011,China;Shizuishan Power Supply Company of State Grid Ningxia Electric Power Co.,Ltd.,Shizuishan Ningxia 753000,China)
出处
《宁夏电力》
2020年第1期13-17,共5页
Ningxia Electric Power
关键词
鸟粪闪络
引流跳线
架空地线
绝缘护套
防鸟害
guano flashover
drainage line
overhead ground wire
insulation sheath
bird damage prevention
作者简介
伍弘(1990),男,硕士,工程师,主要从事输电线路防鸟害及防污闪方面的工作。
