我国配电网一般采用中性点非有效接地方式，该配电网通常被称为小电流接地系统。故障选线是长期以来国内外关注的一大难题。提供了一种判别单相接地故障的程序，以及程序所用的数据。数据是EMTP仿真结果。-China' s distribution network is generally used non-effectively grounded neutral manner, often referred to as the distribution Netcom small current grounding system. Fault line is a major concern of long-standing problem at home and abroad. Provides a ground fault identification procedures and procedures used by the data. EMTP simulation results data.