工频电压作用下新式接地模组指标参数特性分析  

Analysis of the Parameter Characteristics of New Type Grounding Module Under the Effect of Power Frequency Voltage

作　　者：徐乐 游志远 蔡仁峰 徐敏[3] 李鹏飞[4] XU Le;YOU Zhiyuan;CAI Renfeng;XU Min;LI Pengfei(Meteorological Bureau of Yangzhou City,Yangzhou 225009,China;The Lightning Protection New Limited Company of Yangzhou City,Yangzhou 225009,China;Meteorological Bureau of Jiangsu Province,Nanjing 210008,China;China Meteorological Administration High Latitudes Laboratory for Lightning Research,Harbin 150030,China)

机构地区：[1]扬州市气象局,江苏扬州225009 [2]扬州华峰防雷新科技有限公司,江苏扬州225009 [3]江苏省气象局,南京210008 [4]中国气象科学研究院高纬度雷电研究实验室,哈尔滨150030

出　　处：《电瓷避雷器》2020年第4期80-86,共7页Insulators and Surge Arresters

基　　金：国家重点基础研究发展计划(编号:2014CB441405);国家自然科学基金(编号:41175003);江苏省气象局青年基金(编号:Q201714)。

摘　　要：高效的接地模组可降低接地系统的冲击接地内阻,提高雷电流吸收、泄散效率。为此介绍一种新式接地模组,并借助雷电冲击平台,研究其能量吸收、残压和通流的变化规律。分析内阻与土壤电阻率两者关系,并就接闪效果与传统避雷设施进行比较。结果表明:随着冲击电压不断增大,模组的内阻呈现明显减小趋势,且接地模组的吸收能量与冲击电压呈正相关,吸收能量百分比与冲击电压呈负相关;土壤电阻率越低,模组泄流效果发挥更佳;在串联该接地模组的对比试验中较传统防雷装置提高6.5%的接闪概率。The efficient grounding module can reduce the grounding resistance of the grounding system and improve the lightning current absorption and dissipation efficiency.To this end,a new type of grounding module was developed,and the variation of energy absorption,residual voltage and current flow were studied by means of a lightning impact platform.The relationship between internal resistance and soil resistivity was analyzed,and the lightning effect was compared with traditional lightning protection facilities.The results show that the internal resistance of the module shows a significant decrease trend with the increase of theimpulse voltage,and the absorbed energy of the grounding module is positively correlated with impulse voltage,the absorbed energy percentage is negatively correlated with impulse voltage;The lower the soil resistivity,the better the module discharge effect.In the comparison test of the grounding module in series,the lightning strike probability is improved by 6.5%compared with the conventional lightning protection device.

关 键 词：接地模组 通流 残压 内阻 能量吸收 接闪概率 

分 类 号：TM862[电气工程—高电压与绝缘技术]