直线型直流接地极附近三维电流场边界元法计算

3D Current Field Computation Around Linear-Type HVDC Ground Electrodes with BEM Method

采用边界元数值法对ＨＶＤＣ直线型直流接地极附近三维电流场进行了计算，通过分析计算，指出直线型直流接地极表面溢流的端部效应是导致其在运行中出现事故的重要原因，直线型不是理想的接地方式。

BEM method has been used in 3D current field computation around the linear-type HVDC ground electrodes. Based on the calculation results, the paper points out that the end effect of disperse current density is the main reason of the electrode corrosion, and the linear-type is not the idea type in HVDC electrode design.