变电站可控电阻接地系统原理及其投运工作

配电站中性点的接地方式有两种,一种是中性点经消弧线圈接地,另外一种是中性点经小电阻接地。两种方式各有优缺点而且也只适用于一定的条件,可控电阻接地系统综合了这两种接地方式的优点,文章浅析可控接地系统的工作原理,并且对其投运工作进行一定的阐释。

There are two ways to ground the neutral point of distribution station, one is that the neutral point is grounded byarc-suppression coil, and the other is that the neutral point is grounded by small resistance. The two methods have their own advantages and disadvantages and are only suitable for certain conditions. The controllable resistance grounding system synthesizes the advantages of the two grounding modes. This paper analyzes the working principle of the controllable grounding system, and explainsthe operation of the controllable grounding system.