福建低压配电网TT接地系统三级漏电保护模式探讨

Discussion on Three-Level Leakage Protection Mode for TT Grounding System in Fujian Distribution Network

为提高供电可靠性和安全性,就福建最常见的TT接地系统提出了三级漏电保护模式,并从安装位置、参数配置等方面给出了一、二、三级剩余电动作保护器配合使用的原则,以解决保护器分级配合使用情况混乱导致的误跳、越级跳闸等问题。

To improve the reliability and safety of power supply, a three-level leakage protection application mode for the most common TT grounding system in Fujian was proposed. The installation position and parameter configuration of the principle of cooperative usage of one, two, three level residual electric protector was introduced to solve the problem of chaotic, miss tripping, and over-the-counter tripping of the protector.