6kV系统二次电压异常现象浅析

6 kV Power Supply System Secondary Voltage Anomalies Simple Analysis

随着煤矿6 kV供电系统对地电容的增大以及系统短路水平的提高,在6 kV系统上发生单相接地短路时系统的耐受时间比以前更短。该文对6 kV系统单相接地故障进行了分析,得出了系统电压随接地电阻变化的规律,给出了判断和处理的方法。

With the mine on the 6 kV power supply system and the increase in capacitance rise in the level of short - circuit system. 6 kV power supply system on a single phase to ground fault, the system＇s tolerance to a shorter time than before. The paper on the 6 kV power supply system ground fault were analyzed. That the system voltage grounding resistance changes with the law, given the judgement and treatment methods.