特高压直流接地极土壤电阻率测量方法研究  

Soil Resistivity Measurement Method of UHV DC Grounding Electrode

作　　者：刘刚 汤亮亮[1,2,3] 徐霞 陈辉荣 毕晟[1,2,3] 李健 吴敏 LIU Gang;TANG Liangliang;XU Xia;CHEN Huirong;BI Sheng;LI Jian;WU Min(NARI Group Corporation Ltd.,Nanjing 211106,China;Wuhan NARI Limited Liability Company,State Grid Electric Power Research Institute,Wuhan 430074,China;Hubei Key Laboratory of Power Grid Lightning Risk Prevention,Wuhan 430074,China)

机构地区：[1]南瑞集团(国网电力科学研究院)有限公司,南京211106 [2]国网电力科学研究院武汉南瑞有限责任公司,武汉430074 [3]电网雷击风险预防湖北省重点实验室,武汉430074

出　　处：《电瓷避雷器》2023年第4期77-83,共7页Insulators and Surge Arresters

摘　　要：为了准确获取特高压直流输电工程接地极极址区域土壤电阻率数据,以某特高压直流接地极为研究对象,分别对极址区域浅层、深层土壤电阻率进行实测,得到极址区域大地土壤电阻率分层数据。同时在极址区域开展模拟注流试验,实测得到极址区域地面电位分布数据,结合实测获得的土壤电阻率分层数据,通过CDEGS软件进行仿真,对土壤电阻率分层结构进行修正,最终获得极址区域土壤电阻率分层结果。该方法可避免由于特高压直流接地极极址区域较大,地形和土壤电阻率分布不均匀等因素造成的直接测量土壤电阻率的误差,可为特高压直流工程设计和运行提供准确依据。In order to accurately obtain the soil resistivity data of the grounding pole site area of the UHV DC transmission project,taking a UHV DC grounding pole as the research object,the soil resistivity in the shallow and deep layers of the pole site area was measured respectively,and the earth soil resistance in the pole site area was obtained.At the same time,a simulated flow injection test was carried out in the polar site area,and the ground potential distribution data in the polar site area was obtained from the actual measurement.Combined with the soil resistivity layered data obtained from the actual measurement,CDEGS software was used to simulate the soil resistivity layered structure.The results of soil resistivity stratification in the polar site area is obtained.This method can avoid the error of direct measurement of soil resistivity caused by factors such as large UHV DC grounding pole site area,uneven terrain and soil resistivity distribution,etc.,and can provide an accurate basis for UHV DC engineering design and operation.

关 键 词：特高压 直流接地极:注流试验 土壤电阻率测量 

分 类 号：TM862[电气工程—高电压与绝缘技术] TM721.1