CAJ | 학술논문

为检验基于雷电定位系统的地闪密度分布图用于输电线路防雷的有效性和可用性,从输电线路实际运行经验角度对地闪密度分布图与雷击故障的相关性进行分析.以全国多个地区和线路走廊为例,基于雷电定位系统的地闪密度分布,获得了各区域雷区分布,通过相应区域输电线路多年雷击故障位置相关性分析,计算了各雷区等级中的雷击跳闸率或故障杆塔比率.通过比较分析雷区等级及地闪密度值与雷击故障分布之间的相关性,表明地闪密度分布与雷击故障之间存在正相关性,基于雷电定位系统绘制的地闪密度分布图描述雷区分布是有效的和适用的.
위검험기우뇌전정위계통적지섬밀도분포도용우수전선로방뢰적유효성화가용성,종수전선로실제운행경험각도대지섬밀도분포도여뢰격고장적상관성진행분석.이전국다개지구화선로주랑위례,기우뇌전정위계통적지섬밀도분포,획득료각구역뢰구분포,통과상응구역수전선로다년뢰격고장위치상관성분석,계산료각뢰구등급중적뢰격도갑솔혹고장간탑비솔.통과비교분석뢰구등급급지섬밀도치여뢰격고장분포지간적상관성,표명지섬밀도분포여뢰격고장지간존재정상관성,기우뇌전정위계통회제적지섬밀도분포도묘술뢰구분포시유효적화괄용적.
In order to test the validity and availability of the cloud-to-ground flash density ( GFD) map from the lighting location systems (LLS) for the application of lightning protection of transmission lines, we studied on the correlation between the GFD and the practical operating experience of lines, taking some regions such as south of Hebei province and Yunnan province as the analytical examples. Based on the GFD distribution from LLS and records of lightning flashovers in the corresponding regions, the lightning grades were classified, and the lightning trip-out rate or the lightning faulted towers' rate in each grade was obtained from the statistical operating data. Then through analyzing the correlations between the lightning grades and the lightning trip-out rate or the lightning faulted towers' rate, as well as the correlations between the GFD values and the position distribution of lightning flashovers, we find that there is a positive correlation between the GFD and the lightning flashovers, and the GFD map based on the LLS is effective and applicable to describe the lightning distribution.