Abstract：It is very complex to calculate current field and temperature field of DC grounding electrode. At first, based on coupling method of electric field and circuit, this paper computes current field of ±800kV cirque grounding-electrode on the condition of self-resistance of electrode. Then, the result of current field is considered as a boundary condition to compute temperature field of the electrode by 3-D finite element method. In order to verify the validity of the method, an engineering case is compared with calculation results. In addition, based on the computation method, the paper researches grounding performance of different cirque electrode on the condition of same electrode length, and gives some reference suggestions to practical engineering. Afterwards, a series of influencing factors of grounding performance are analyzed such as soil resistivity, embedded depth of electrode, and so on.
王建武, 文习山, 杜忠东, 何钢. ±800kV圆环接地极电流场温度场耦合计算[J]. 电工技术学报, 2009, 24(3): 14-19.
Wang Jianwu, Wen Xishan, Du Zhongdong, He Gang. Coupling Calculation of Current Field and Temperature Field of ±800kV Cirque DC Grounding-Electrode. Transactions of China Electrotechnical Society, 2009, 24(3): 14-19.
2009, Vol. 24 
