本文主要是解决二个问题,一个是为什么要提出故障相傍路这个措施,另一个是如何实现这个措施。一、漏电保护的特点当前,我国对人身触电和单相对地漏电的保护是靠漏电继电器来执行的。人身触电电流和单相对地绝缘故障电流的大小,主要是决定于电网对地绝缘电阻和电网对地电容的大小(图1),因而漏电继电器也是从这二方面来进行保护的。 This article is mainly to solve two problems, one is why the proposed phase of the road near the failure of this measure, and the other is how to achieve this measure. First, the characteristics of leakage protection At present, China’s personal electric shock and single-phase leakage protection is implemented by the leakage relay. Personal shock current and single-phase insulation fault current size, mainly due to the grid insulation resistance and power grid size to the ground (Figure 1), so the leakage relay is also protected from these two aspects.