电力系统暂态稳定分析的混合算法

直接法和数值仿真法是电力系统暂态稳定分析的两种基本方法，本提出了一种混合算法，将上述两种方法有机地结合起来，扬长避短，快速而精确地求得某种故障下系统的临界清除时间，并对数值仿真法暂态稳定程序的输出结果进行分析，给出了临界机群的稳定度指标。

A HYBRID METHOD FOR TRANSIENT STABILITY ANALYSIS

The direct method and the time simula-tion method are two main methods of transient stabili-ty analysis.They have complementary superiority and drawbacks.Ahybrid method presented here combines these two mtehods. It can derive the critical clearing time quickly and precisely.Basides,it can analyze theoutput of transient stability program and give stability index of the critical clusters. This method is tested onasystem of 148 buses and 28 generators,and proved to be efficient.