中文摘要：

阐述了PSAT的功能和特点、仿真模型的建立方法和仿真原理等关键问题,然后以WECC3机9节点系统为原型系统建立仿真模型,进行小扰动特征值计算和暂态稳定时域仿真,并根据计算和仿真结果分析了系统在给定运行状况下的小扰动振荡模式和提高暂态稳定的措施。结果表明,PSAT是进行电力系统动态特性建模及仿真分析的强大实用工具。

英文摘要：

This paper elaborates such key points about PSAT as functions and characteristics,model building method and simulation principle.Then simulation model was built based on WECC 3-generator 9-bus system,through which small disturbance eigenvalue calculation and time-domain simulation of transient stability were carried out.Moreover,oscillating pattern of small disturbance and measures to improve transient stability are analyzed using the calculation and simulation results.The results indicate that PSAT is a powerful tool for modeling and simulating dynamic characteristic of power system.