珠江三角洲地区典型10kV杆塔感应雷耐雷性能分析  

Analysis of Protection Performance of 10kV Typical Pole Against Induced Lightning in Pearl River Delta Region

作　　者：吴彪[1] 赵淳[1] 卢泽军[1] 

机构地区：[1]国网电力科学研究院武汉南瑞有限责任公司,湖北武汉430074

出　　处：《水电能源科学》2013年第12期236-238,共3页Water Resources and Power

基　　金：国家电网公司2012年实用型关键技术基金资助项目

摘　　要：10kV配电线路雷击跳闸的主要原因是感应雷。为分析各因素对感应雷耐雷性能的影响,从而实施有针对性的防雷治理改造,依据电磁场法推导了感应过电压的计算公式,选取珠江三角洲地区典型10kV四回路直线塔BB-20,分析了雷击点位置、杆塔高度、线路绝缘水平对杆塔耐雷性能的影响。基于增加放电路径通道长度的原理,提出通过加装复合绝缘塔头或横担的方法来提高杆塔耐雷性能。Induced lightning is the main cause of lightning trip out occurrences on 10 kV distribution lines. The fac- tors influencing protection performance against induced lightning are analyzed for improving lightning protection. And then electromagnetic field method is used to deduce the formula of induced ove〉voltage. Taking the typical 10 kV quad- ruple-circuit lines tower BB20 in Pearl River Delta Region for an example, the influence of factors, such as lightning loca- tion, pole height and insulation level on lightning protection performance are analyzed. Based on the principle of increas- ing the length of discharge path, it proposes to improve lighting protection performance of pole tower by installation of composite insulation Dole-toP or crossarm.

关 键 词：珠江三角洲地区 10 KV配电线路 耐雷性能 感应过电压 

分 类 号：TM863[电气工程—高电压与绝缘技术]