基于雷电定位数据的架空线路雷电参数统计新方法

Study on Lightning Parameters Statistic for High Voltage Transmission Line Based on Lightning Locating Data

为研究线路沿线雷击分布规律,查找线路雷击故障原因,确定线路易击段,采用一种雷电定位数据统计和分析的新方法——线路单档距分析法,将线路按照各档距划分为相应受雷范围的统计段。文章阐述了线路单档距法防雷评估的可行性,描述雷电参数统计模型,以广东惠州地区某典型线路为例,探讨应用各分段受雷范围内的雷电参数修正雷击跳闸率计算模型,分析结果表明本文方法可为比较、分析、评判线路沿线的雷击风险提供依据。

To study the distribution law of lighting strike in power transmission lines,find the causes of lighting strike faults,and determine the sections striken by lighting easily,novel method named single span method based on analyzing of lighting locating data is proposed to divide line into statistic sections of corresponding lighting strike as to each span.In this paper,the feasibility of evaluating anti-lighting by using of this novel method is discussed,and the statistic model of lighting parameter is described.Taking a case of a classical line in Huizhou district of Guangdong province,the lighting parameters of lighting in each section of lighting strike are applied to modify the calculation model of lightning strike rate.Results show that this method is a reference tool to compare,analyze and judge lighting strike risk of power transmission lines.