电瓷避雷器Issue(6)：148-156,9.DOI:10.16188/j.isa.1003-8337.2023.06.017
基于环状回流极的接地模拟试验平台测量研究
Grounding Simulation Test Platform Based on Annular Reflux Electrode
摘要
Abstract
The grounding simulation test circuit composed of annular reflux electrode has the advantages of low circuit resistance and reasonable dispersion path,and has been widely used in grounding simulation test.However,the introduction of the reflux electrode will lead to the distortion of the potential distribu-tion in the ground,which will affect the accurate measurement of the ground resistance.Therefore,the potential distribution characteristics of ground in ground simulation test platform are studied theoretical-ly.The results show that the introduction of reflux electrode will lower the ground potential rise of the grounding device,zero potential reference point will be generated between the reflux electrode and the grounding device,and accurate grounding resistance can not be obtained according to the definition of grounding resistance.Based on two-port theory,the correction formula of grounding resistance of grounding device is derived.CDEGS simulation software was used to compare the corrected value of grounding resistance with the real value under different sizes,different types of grounding devices and different soil resistivity.The results show that the absolute error rate of the corrected value is less than 0.5%,which verifies the validity of the modified formula,and has certain guiding significance for field measurement.关键词
接地模拟试验/环状回流极/零电位参考点/二端口网络/CDEGSKey words
grounding simulation test/annular reflux electrode/zero potential reference point/two port network/CDEGS引用本文复制引用
魏洪志,胡元潮,黄涛,周文,沈文韬,胡晓连..基于环状回流极的接地模拟试验平台测量研究[J].电瓷避雷器,2023,(6):148-156,9.基金项目
山东省自然科学基金(编号:ZR2021ME092) （编号:ZR2021ME092）
江苏省自然科学基金(编号:SBK2020042717).Project supported by Natural Science Foundation of Shandong Province of China(No.ZR2021 ME092) （编号:SBK2020042717）
Natural Science Foundation of Jiangsu Province of China(No.SBK2020042717). （No.SBK2020042717）
