同步发电机的暂态电动势与次暂态电动势

Transient EMF and Subtransient EMF of Synchronous Generators

本文基于：（１）戴维南定理；（２）同步发电机的磁场分布与由磁路的磁阻、磁导分析电抗的方法；（３）磁链守恒原理，但又不是通常解磁链方程组方法，而得到了对电力系统暂态分析有重要影响的同步发电机暂态与次暂态电动势。其特点是这两个电动势有清晰的物理意义。

The transient EMF and subtransient EMF which are of great siqnifi cance for the power system transient analyses are obtained on the basis of: (1)the Thevenin's theorem,(2)the magnetic field distribution of the generator and the reactances obtained from the reluctance and permeance of the generator magnetic circuit,(3)the magnetic flux conservation principle,not on solving the magnetic flux linkage equations.The two EMF s,obtained by the way presented in the paper have a very clear physical meaning.For the first time,the two EMF s,physical meanings are explained.