一种分析电力系统低频振荡中阻尼特征的新方法

根据电力系统中低频振荡的特点，本文从系统阻尼分类着手，提出了一个反映网络结构及运行工况对低频振荡影响的固有状态阻尼及固有状态阻尼系数矩阵的概念，并以此为基础得到一个分析与判断电力系统低频振荡中阻尼特征的新方法，最后，本文将此方法应用于某实际系统的分析计算中，并与常规的方法进行了比较，得到了令人满意的结果。

A New Approach of Analyzing the Damping Behaviour of the Low Frequency Oscillation in Electric Power Systems

According to the characteristics of the low frequency oscillation and starting with the damping classification, in this paper, the concept of the inherent state damping and inherent state damping coefficient matrix, which can reflect the influence of the network structure and operating state on the low frequency oscillation, are presented. On the basis of them, a new approach of analyzing and evaluating the damping behaviour of electric power system in the low frequency oscillation is obtained. At last, the proposed method is applied to a real system and is compared with the conventional eigen-analysis method, and the results indicate that the proposed method is satisfactory.