接地电阻与温度、相对湿度的关系特征分析

Analysis of Relationship between the Grounding Resistance and the Temperature, Relative Humidity

本文根据2017年7月-2018年6月中山市石歧长虹加油站地网电阻值的监测数据,结合中山市气象观测站日平均气温、日平均地温、日平均相对湿度的数据,统计分析接地电阻与温度、相对湿度的关系特征。分析表明:总体上接地电阻与温度、相对湿度均为负相关关系。从全年各月份分析来看,接地电阻值具有阶段性的变化特征。在干旱的秋冬季(10月-次年1月),相对湿度比较稳定,温度的变化是影响接地电阻变化的主要因素,两者呈现显著的负相关关系;在春夏雨季(4月-6月),温度比较稳定,相对湿度的变化是影响接地电阻变化的主要因素,两者呈现显著的负相关关系。

Based on the monitoring data of the grounding resistance of the Shiqi Changhong gas station in Zhongshan City from July2017 to June 2018, this paper combines the daily average temperature, daily average ground temperature and daily average relative humiditydata of the Zhongshan Meteorological Observatory and analyzes the relationship between the grounding resistance and the temperature andrelative humidity. The analysis shows that the overall grounding resistance is negatively correlated with temperature and relative humidity.From the analysis of the whole month of the year, the grounding resistance value has a phase change characteristic. In the dry autumn andwinter （October-January of next year）, the relative humidity is relatively stable, and the temperature change is the main factor affecting thechange of the grounding resistance and the two have a significant negative correlation; In the spring and summer rainy season （April-June）,the temperature is relatively stable, and the change of relative humidity is the main factor affecting the change of grounding resistance, andthe two exhibit a significant negative correlation.