电力系统多机系统暂态稳定计算实现

电力系统多机系统暂态稳定计算实现摘 要简要介绍了电力系统暂态稳定仿真的两种常用算法，分析了时域仿真法和暂态能量函数法的优点和局限性的特点。简述了 MATLAB 区别于传统仿真工具EMTP 和 PSASP 的显著特点，利用 MATLAB 环境下的动态仿真工具 Simulink 和电力系统工具箱 SPS，构建了一个多机系统模型，陈述了 SPS 暂态仿真的主要步骤,对系统进行了大扰动下的功角稳定仿真，同时讨论了其仿真环境的设置与加速技巧。并在此基础上对电力系统稳定器 PSS、静止无功补偿器 SVC、快速切除故障、单相自动重合闸等提高电力暂态稳定性措施的运行效果进行了仿真分析.实践表明,MATLAB 是进行电力系统建模和仿真分析的强大有用工具.关键词 MATLAB，PSS，仿真,多机系统，暂态稳定 Abstract This paper introduces two simulation methods for power system dynamic stability simulation, and analyzes the merits and limitation of the step by step (SBS） time-domain method and transient energy function method （TEF）， which are used in power system dynamic stability. This paper also introduce the notable characteristics of MATLAB compared with the traditional simulation tool EMTP and PSASP. MATLAB SimPower System Blocket is used to build a model of muti-machine system ， and its main implementation steps are described. Power angle stability under large disturbances is simulated in the muti—machine system。 The parameter settings and acceleration skills are discussed。 Based on this model, some methods of improving power system transient stability are simulated by SimPower System Blocket， including power system stabilizer， static var compensator， fast short circuit clear, and single-phase reclosure .The results indicate that MATLAB is a powerful tool applied to the modeling and simulation of power system.Key Words MATLAB，PSS,simulation，muti-machine system，transient stability目 录摘 要....................................................................................