暂态稳定性的定量分析—轨迹分析法

A New Method for Quantitative Assessment of the Transient Stability of Power Systems-Trajectory Analysis Method

本文给出了一种以暂态能量函数为工具分析常规暂稳程序输出结果的方法。该方法可给出各发电机的稳定指标S_i和不稳定指标U_i,借此可有效地克服数值仿真法不能定量评价各发电机暂态稳定性的缺点,使对暂稳程序输出结果的分析定量化、计算机化。本文给出的指标优于Fouad等所提出的指标。

A new transient stability analysis method, Trajectory Analysis Method (TAM), is presented. This method is based on the transient energy function and used to analyze the output data of traditional transient stability program and provide stability index S1 and instability index Ui for each generator i. The drawback of numerical simulation method, that is the stability degree of each generator can not be quantitatively assessed, :is overcome by the TAM. By use of the TAM, the output data of the transient stability program (numerical simulation based) can be automatically analyzed by computer and the stability index which reflects the stability degree of each generator can be provided. The efficiency for analyzing the output of transient stability program is improved both qualitatively and quantitatively by the TAM. The indices provided in this paper are better than those presented by Fouad et al. The stability measurement function is also defined.