山区高压输电线路雷击跳闸分析和改进措施Analysis and Improvement Measures of Lightning Trip-outs for High-voltage Transmission lines in Mountainous Areas
曹炯,余长水
CAO Jiong,YU Chang-shui(Ningbo Electric Power Bureau
摘要(Abstract):
针对近年来宁波地区处于山区的输电线路雷雨季节频遭雷击引起跳闸故障,分析跳闸原因,为提高线路耐雷水平减少雷击跳闸故障,提出防雷改进措施,提高了电网供电可靠性。
As to the frequent lightning trip-outs on transmission lines in mountainous areas in Ningbo in thunderstorm seasons during recent years,this paper proposes the lightning protection improvement measures through the cause analysis in order to improve the lightning protection capability of lines,reduce lightning trip-outs and strengthen the reliability of power supply in the grid.
关键词(KeyWords):
高压输电线路;雷击;接地电阻;氧化锌避雷器
high voltage transmission line;lightning strikes;grounding resistance;zinc oxide arrester
基金项目(Foundation):
作者(Author):
曹炯,余长水
CAO Jiong,YU Chang-shui(Ningbo Electric Power Bureau
DOI: 10.19585/j.zjdl.2011.05.006