Summary of Current Field Research Status of HVDC Grounding Electrode

Basic action of HVDC grounding electrode is presented in this paper. The characteristic of current field distribution of HVDC grounding electrode is analyzed. The impact of burial depths of grounding electrode,soil resistivity,type of ring polar,number of feeder cable on current field distribution is expounded. The optimization design for improving current field of HVDC grounding electrode is summarized. Such as though rationally arranging feeder steels and currentloop at the end of linear electrode are to optimize its current field distribution. And it is to improve ring electrode by optimizing polar radius ration and burial depths. Finally,the coming research content is presented.