This paper eloborates the earthing types and power supply systems of low-voltage distribution system in common use. It also respectively expounds their working principles, merits &demerits and the applied direction.

• 摘要本文较详细的阐述了低压配电系统中常用的几种接地方式和供电系统，并分别阐述了各个供电系统的工作原理、优缺点及应用方向。