发电机模型及电力系统暂态稳定研究

电力系统互联能带来明显的经济效益和技术利益，是电力工业发展的必然趋势。但互联网会使系统的动态行为更为复杂，这就对电力系统的安全稳定运行提出了更大的挑战，如何建立元件的数学模型、确定合适的算法成为必要。本文正是针对此，首先详细分析了电力系统的核心元件同步发电机的基本原理，在此基础上建立起了发电机的数学模型，主要是同步发电机实用模型中的经典二阶模型，并做出了详细的分析。本文对电力系统暂态稳定分析采用了时域仿真法。在整个分析的过程中，借助了MATLAB仿真软件。对一简单单机无穷大系统首端发生三相对称短路时进行了时域仿真，并且很详细的分析了不同切除故障时间下同步发电机的转子角、输出功率、端电压随时间变化的曲线。

A Study on Synchronous Generator Model and Power System Transient Stability

The unit each other of power system could bring economy benefit and technique beneiit is trend ot power industry development. But internt make the dynimic movement of system become more complex that have more challenge for power system safety and stablilization. It is necessary that how to establish the complement of mathematics former and appropriate arithmetic .That is the point out of this article~ firstly, labour fundamental of core element synchronization generator of power system and establiash generator mathematics former that labour the classic two rank of synchronization generator utility former which reexpand three rank former and five rank former. Secondly we research transient stability of the power system. This article use time-domain simulation meaths analyse transient stability of the power system, and by dint of MATLAB simulation software carry through time-domain simulation meaths when a simply stand-alone infinite system have three symmetry short in the top and particular analyse the different time of resect fault and curve of change with time in synchronization generator rotor, output power, and top pressure.