【摘要】 大容量电力系统发生三相短路时 ,短路电流很大 ,对供电系统的运行产生极大的危害 ,而且短路电流的分析复杂。本文对无穷大容量供电系统发生三相短路提出了几种分析方法 :解微分方程法 ,三要素法 ,拉氏变换法 ,状态变量法 ,计算机仿真分析。分析该系统时用三要素法是一种简捷而方便的方法更多还原

【Abstract】 The three-phase short circuit currents of bulk electric power system are very high,and the high currents do harm to the working of the system.What’s more, the anlysis of the short-circuit currents is very complex.In this paper,several analytical methods of three-phase short circuit of infinite bulk electric power system are presented: integro-differential equation ,three-factor method ,lapace transformation,state variable,computer simulastion analyze.The three -factor method is convenient and rapid to analyze this system.更多还原