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.
作者
刘刚
汤亮亮
徐霞
陈辉荣
毕晟
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)
出处
《电瓷避雷器》
CAS
北大核心
2023年第4期77-83,共7页
Insulators and Surge Arresters
关键词
特高压
直流接地极:注流试验
土壤电阻率测量
UHV
DC grounding electrode
flow injection test
soil resistivity measurement
