高压架空输电线路引雷对附近10kV架空配电线路雷击跳闸特性的影响  

Influence of Triggered Lightning of High Voltage Overhead Transmission Lines on 10 kV Overhead Distribution Lineês Lightning Trip Characteristics

作　　者：刘刚[1] 席禹[1] 唐军[1] 李恒真[2] 邓琳[1] 许志恒[1] 

机构地区：[1]华南理工大学电力学院,广州510640 [2]广东电网公司佛山供电局,佛山528000

出　　处：《高电压技术》2014年第3期690-697,共8页High Voltage Engineering

基　　金：国家重点基础研究发展计划(973计划)(2009CB724507)~~

摘　　要：为分析高压架空输电线路对附近10 kV架空配电线路雷击跳闸特性的影响,首先选取珠江三角洲地区110、220、500 kV架空输电线路各1条作为试验样本,统计分析了高压架空输电线路架设前、后线路走廊范围内的地闪密度及雷电流幅值变化情况。然后采用规程法、电气几何模型、先导发展模型这3种方法,分析了架空配电线路直击雷受雷宽度与输、配电线路之间距离的关系。研究结果表明:高压架空输电线路引起附近10 kV架空配电线路跳闸率增大,原因是输电走廊内地闪密度和高幅值雷电流概率增大;且输、配电线路之间的距离越小,架空配电线路遭受直击雷的风险就越小。In order to obtain influence of overhead high voltage transmission lines on nearby 10 kV distribution lines＇ lightning trip characteristics, choosing a 110 kV line, a 220 kV line, and a 500 kV line in the Pearl River Delta region in China as the sample, we statistically analyzed the changes in flash density and lightning current amplitude of the line cor- ridors before and after the construction of these transmission lines. Secondly, we used three methods, namely, the planning method, the electrical geometry model, and the pilot development model, to analyze the relationship between the Ray widths of lightning directly strokes on distribution lines and the distance between of the transmission lines and the distribution lines. The results show that transmission lines will cause the increase of trip rate of nearby 10 kV distribution lines due to increases in the rising flash density and lightning current amplitude in the transmission corridors. In addition, the probability of direct lightning stroke on distribution lines gets smaller when the horizontal distance between distribu- tion lines and transmission lines decreases.

关 键 词：高压架空输电线路 10 kV架空配电线路 地闪密度 雷电流幅值分布 规程法 电气几何模型 先导 发展模型 

分 类 号：TM863[电气工程—高电压与绝缘技术]