高压直流输电共用接地极电气接线研究

Research on the Electric Line of Common Grounding Electrode in ultra High Voltage Transmission System

本文通过分析共用接地极特点,提出了共用接地极的接线方案。在共用接地极进线处装设隔离开关,并根据实际工程条件选择了隔离开关的型式和参数。通过计算共用接地极的电位升分布,对接地极线路检修提出了建议。

The grounding single line scheme of common grounding electrode is proposed by analyzing the characteristic of common grounding electrode in this paper. The disconnector switch is established on the input line of the common grounding electrode. The types and parameters of the disconnector switches are selected by the real conditions of the project. In the end, the suggestion of the line check is obtained by calculating the distribution of electrode potential in the common grounding electrode.