煤矿110kV变电站设计中的三相短路电流计算

Calculation of Three-phase Short-circuit Current in 110kV Substation Design of Coal Mine

本文介绍了基于标幺值法的电力系统三相短路电流计算方法,并以某煤矿110kV变电站设计中三相短路电流计算为例,详细叙述了计算过程,帮助设计人员较容易地确定短路电流,从而为煤矿企业供电系统设计提供依据。

This paper introduces the calculation method of three-phase short-circuit current of power system based on the per unit method,and takes the calculation of three-phase short-circuit current in the design of a 110kV substation in a coal mine as an example to describe the calculation process in detail,which helps designers to determine the short-circuit current more easily,thus providing a basis for the design of power supply system in coal mine enterprises.