接地电阻受气象因素影响的特性分析  

The Characteristics Analysis of Grounding Resistance Affected by Meteorological Factors

作　　者：郭在华[1] 向亚飞[1] 李良福[2] 覃彬全[2] 

机构地区：[1]成都信息工程大学电子工程学院,四川成都610225 [2]重庆市气象局,重庆401147

出　　处：《成都信息工程学院学报》2015年第4期308-314,共7页Journal of Chengdu University of Information Technology

基　　金：国家自然科学基金资助项目(61201095);四川省科技支撑计划资助项目(2015GZ0282)

摘　　要：根据重庆歌乐山综合气象观测场2012年4月～2013年3月的接地电阻监测数据,总结土壤使用降阻剂之后,接地装置的接地电阻变化特征;分析不同深度土壤层接地电阻与各气象因素之间的相关关系;建立了各气象因素共同作用对接地电阻的影响的回归模型.结果表明,对于使用降阻剂的土壤,其接地电阻随着土壤深度增加而呈波动减小趋势,并且具有明显的季节变化特征,各层最小值均出现在秋季,土壤浅层（0.2 m、0.4 m、0.8 m）最大值出现在冬季,土壤深层（1.6m、2.4 m）最大值出现在春季;不同土壤层接地电阻发生变化是各气象因素共同作用的结果,温度和降水量是主要影响因素;依据月平均数据建立的回归模型可用来初步估计各层的月平均接地电阻值.Based on the grounding resistance data from April 2012 to March 2013 in Gele Mountain Comprehensive Meteorological Observation Field of Chongqing, this paper concluded the changing characteristics of grounding resistance after using the drag reduction agent, discussed the correlation between grounding resistance and meteorological factors in different depths, established the multivariate linear regression model of the effect of meteorological factors on grounding resistance.The results showed as follows： For the soil after using the drag reduction agent , the deeper the depth, the smaller the average grounding resistance is.And the change characteristics of grounding resistance has obvious seasonal, the minimum appeared in Autumn at every depths, the maximum appeared in winter with the depths of 0.2 m,0.4 m,0.8 m, and in Spring with the depths of 1.6 m,2.4 m.The change of grounding resistance in every layer are influenced jointly by all meteorological factors.Among the factors, temperature and precipitation are the main influence factors.The regression model built by monthly average data can be used to estimate the monthly average levels of grounding resistance value preliminarily.

关 键 词：气象探测技术 雷电防护科学与技术 接地电阻 气象因素 变化特征 相关系数 回归模型 

分 类 号：TM862.3[电气工程—高电压与绝缘技术]