电力系统暂态稳定性的数值仿真研究

由于系统暂态失稳引发的大停电等事故频繁,所以加强对电力系统暂态稳定分析的研究具有重要意义。数值计算是系统仿真的重要手段,计算结果可以为系统的规划、设计、运行、分析、控制等提供依据。首先介绍了电力系统暂态稳定分析的主要方法,并利用时域法讨论了单机无穷大系统的暂态稳定性。其次,采用龙格库塔方法求解离散发电机转子的运动方程,得到了系统δ-t曲线。最后,运用上述方法计算实际问题,结果表明暂态稳定分析与初始运行方式、故障点位置、故障切除时间、故障后状态有关。因此,在实际生产中应注意结合上述特点减少事故发生。

Numerical Simulation Analysis of Transient Stability of Electric Power System

Electric power blackout caused by power system transient instability becomes more frequently in recent years,so the analysis of power system transient stability is of great significance.Numerical calculation is an important method for system simulation.The results can provide evidence for power system planning,design,operation,analysis,control etc.This paper introduces the main methods for power system transient instability analyses,and analyses the transient stability of single machine-infinity power syste...