本指南说明了直流（dc）接地电极线电弧角的配置参数，包括持续直流电弧电流、电弧角的组成、安装和间隙距离。本指南适用于新建或改造直流输电项目直流接地电极线（以下简称电弧角）的电弧角配置。

This guide indicates the configuration parameters for arcing horns of direct current (dc) earth electrode lines, including sustained dc arc current, composition, installation, and gap distance of arcing horns. This guide applies to the configuration of arcing horns of dc earth electrode lines (hereafter referred to as arcing horns) for new or reconstructed dc transmission projects.