对称分量法序分量特性剖析与电路模型的探讨

AnalysisforFeature of Sequence Networks and Exploration of Circuit Model in Symmetrical Components

对称分量(正序、负序和零序分量)是对不对称三相短路电流相量的代数分解,本文从序网制定的角度对三相短路故障中各分量在系统的产生的作用进行分析,增加对三种分量的感性认识,并以对称分量法计算三相电路短路电流的公式为出发点,提出简化的电路模型,为短路电流的计算提供了一种辅助理解方法。

Symmetrical components has known as an algebraic factorization for unbalanced three-phase short-circuit currents. The function of sequence components on the point of synthesizing Sequence Networks will be discussed in this article, it will en-lighten the engineers’sensitive understanding for the components, furthermore, Auxiliary simple circuit models are provided in ac-cordance with the calculation formula of the short-circuit currents to help us understand the symmetrical Components.