高海拔条件下沙尘暴天气对线-板间隙工频击穿电压的影响试验研究  

Experimental Study on Influence of Dust Storm Weather on Power Frequency Breakdown Voltage of Line-board Gap Under High Altitude

作　　者：刘炯 王劲 梁明 刘云鹏[2] 黄志成[2] 李星辰[2] 耿江海[2] 刘继兴[2] LIU Jiong;WANG Jin;LIANG Ming;LIU Yunpeng;HUANG Zhicheng;LI Xingchen;GENG Jianghai;LIU Jixing(Southwest Electric Power Design Institute Co.,Ltd.of China Power Engineering Consulting Group,Chengdu 610000,China;Key Laboratory of Safety and Defense of Power Transmission and Transformation Equipment of Hebei Province,North China Electric Power University,Baoding 071003,China)

机构地区：[1]中国电力工程顾问集团西南电力设计院有限公司,四川成都610000 [2]华北电力大学河北省输变电设备安全防御重点试验室,河北保定071003

出　　处：《绝缘材料》2022年第10期99-106,共8页Insulating Materials

基　　金：中国能源建设集团规划设计有限公司2019年度第一批集中开发科技项目(GSKJ2-D03-2019)。

摘　　要：本研究参考西藏、新疆、青海等地沙尘暴高发地区输电线路走廊附近沙尘参数的调研结果,以及沙尘暴天气的相关气象资料确定了模拟风沙试验中风速、粒径、浓度、荷质比等具体参数,并搭建了一套模拟风沙试验装置。利用该装置,在海拔2200 m地区开展了模拟风沙条件对间隙外绝缘工频放电电压的影响试验。结果表明:模拟沙尘环境仅会降低间隙距离为0.2 m以下短间隙的工频放电电压,而不会降低间隙距离为0.2 m以上长空气间隙的工频放电电压;空气中带电沙尘本身不是造成间隙跳闸放电的根本原因。According to the sand parameters around the transmission line corridors in Tibet,Xinjiang,Qinghai and other high incidence of sandstorms regions and the relevant data of dust weather,the wind speed,particle size,concentration,charge/mass ratio and other specific parameters for sand simulation were determined,and a testing apparatus was built.The effect of simulated sand conditions on the power frequency discharge voltage of external insulation in the gap was tested by using this device at an altitude of 2200 m.The results show that the simulated sand dust environment will decrease the power frequency discharge voltage of the short gap below 0.2 m,but will not reduce the power frequency discharge voltage of the long air gap above 0.2 m,and the charged dust in the air itself is not the cause of the gap trip discharge.

关 键 词：沙尘暴 线-板间隙 工频击穿电压 高海拔 

分 类 号：TM933[电气工程—电力电子与电力传动]