考虑接地线频率特性的高压线路雷电过电压研究
投稿时间:2019-04-28  修订日期:2019-05-14  点此下载全文
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作者单位邮编
郑晓彦* 河南广播电视大学机电工程学院 450000
李润哲 河南广播电视大学机电工程学院 
中文摘要:雷电过电压会对高压线路的安全稳定运行带来严重的影响,而装设耦合接地线是降低高压线路雷电过电压的重要措施。针对目前尚未研究耦合接地线频率特性对线路雷电过电压影响的现状,本文建立了高压架空线路雷电过电压仿真计算模型,对有无耦合接地线、不同位置耦合接地线及装设不同频率特性接地线下的高压线路雷电过电压进行计算分析,获得了装设接地线及其频率特性对高压线路雷电过电压的影响。本文研究成果可为高压线路的防雷设计及接地线的选择提供有效的参考和技术指导。
中文关键词:雷电过电压  高压线路  接地线  频率特性
 
Research on Lightning Overvoltage of High Voltage Lines ConsideringFrequency Characteristics of the Grounding Lines
Abstract:Lightning overvoltage will seriously affect the safe and stable operation of high voltage lines, and the installation of coupling grounding wire is an important measure to reduce the lightning overvoltage of high voltage lines. In view of the current situation that the effect of frequency characteristics of coupled grounding line on lightning overvoltage of the line has not been studied, a lightning strike overvoltage simulation model for high voltage overhead line is established in this paper, and the lightning overvoltage of high voltage lines with and without coupling grounding lines, coupling grounding lines at different positions and grounding lines with different frequency characteristics are calculated and analyzed, the effects of grounding wire and its frequency characteristics on lightning overvoltage of hv lines are obtained. The research results of this paper can provide effective reference and technical guidance for lightning protection design of high voltage lines and selection of grounding lines.
keywords:lightning overvoltage  high voltage lines  ground wire  frequency characteristics
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