摘要
提出了适用于时域仿真的数学模型。对实例进行分析,考虑单机无穷大系统和三机系统,使用Matlab编程求解所得的数学模型,仿真暂态过程中发电机转子摇摆曲线,从而判定电力系统的暂态稳定性。单机系统的仿真结果表明:发电机阻尼越大,故障切除时间越短,系统越容易稳定;三相短路故障时系统最容易失稳。多机系统的仿真结果表明:Tj越大,达到稳定所需的时间越长;当KV满足静态稳定要求时,KV越大,系统的暂态稳定性越好。对于多机系统,讨论了重合闸对暂态稳定的影响。该方法丰富了Matlab在电力系统暂态稳定方面的应用。
Time domain simulation is a basic method for transient stability analysis of power system.The main content of this article is to build a mathematical model of single machine system and multi-machine system,then to use time domain simulation to analyze and simulate their transient stability.The simulation results show that the single machine system is more stable with greater damping and shorter cut-time.Considering excitation,because of bigger Tj multi-machine system needs more time to be stable.When KV mee...
出处
《实验室研究与探索》
CAS
北大核心
2010年第4期40-43,共4页
Research and Exploration In Laboratory
