摘要
目前已较全面统计分析了输电线路走廊落雷规律,但却缺少分析线路本体雷击特征规律。为此,基于线路走廊落雷参数统计方法提出线路本体雷击特征规律统计方法,并在雷击暂态监测装置数据的基础上对相关数据进行统计分析,获取输电线路不同区段的绕、反击分布特征规律,分析表明线路反击故障与反击雷数量分布并无明显相关性,绕击故障与绕击雷分布具有较强的关联性。接着针对具体区域分析了雷击与线路走廊地闪的关联性。最后,结合线路走廊雷电分布特征分析获取平原和山区线路击杆率实测参数,将山区进行细分,典型线路击杆率和反击率较为一致地呈现出"平原>山顶>山坡>山谷"的分布特征。研究成果对于保障输电线路安全意义重大。
At present,the statistical analysis of the lightning striking law for transmission line corridor has been relatively comprehensive,but there is a significant lack of analysis of the lightning striking characteristic law of the line body.In this paper,based on the statistical method of the falling lightning parameters in the circuit corridor,the statistical method of the characteristic law of the lightning strike in the circuit body is proposed.Based on the data of lightning striking transient monitoring device,the distribution characteristics of lightning striking and back flashover in different sections of transmission lines are obtained.It is also revealed that there is no obvious correlation between the lightning back flashover fault and the lighting back flashover lightning quantity distribution,but there is a strong correlation between lightning striking fault and striking lightning distribution.And then,the correlation between lightning strike and spatial distribution of lightning activity is analyzed.Finally,based on the analysis of lightning distribution characteristics in the corridor of the line,the measured parameters of"lightning striking rate"of the lower line in the plain and mountain area are obtained,and the mountain area is subdivided.The distribution characteristics of the typical line lightning striking rate and lightning back flashover rate are sorted as"plains>hilltops>hillsides>valleys".The research results are great significance to the security of transmission lines.
作者
胡金殿
方聪
周海涛
金凯
HU Jin-dian;FANG Cong;ZHOU Hai-tao;JIN Kai(Lijiang Power Supply Company,Yunnan Power Grid Co.,Ltd.,Lijiang 674100,China;Yunnan Yutian Lightning Protection Material Co.,Ltd.,Kunming 650000,China)
出处
《水电能源科学》
北大核心
2020年第3期168-171,共4页
Water Resources and Power
关键词
输电线路
雷击
本体特征
相关性
击杆率
transmission line
lightning striking
body feature
correlation
striking tower rate
