多机电力系统电压静态稳定性的特征结构分析法

An Eigen -Structure Analysis Method of the Steady-state Voltage Stability in Multimachine Systems

给出了电压稳定性的分类与定义，提出了一种新的多机系统电压静态稳定性的特征结构分析法。该方法不仅可以给出系统静态电压稳定裕度，而且能够直接计算稳定裕度对状态变量和控制变量的灵敏度，同时能够准确地辨别潮流多值解的属性，具有计算简单快速，提供信息全面、直观的优点。

This paper proposes classification and definitions of voltage stability and presents a new analytical method called eigen-structure analysis of the steady-state voltage stability in multimachine systems. It not only can be used to calculate the steady-state voltage stability margin, but also to compute the sensitivity of the stability margin to system state variables and controlled variables directly. In the meantime, this method can identify the characteristic of multisolutions of load flow correctly. The proposed method is practical and efficient in computation as well as comprehensive in use.