大扰动下低频振荡抑制及暂态稳定性研究

摘要

This paper introduces the working principle and the mathematical model of additional power system excitation control-Power System Stabilizer (PSS).Through the establishment of a typical single machine-infinite bus system simulation model, simulates the synchronous generator’s transient operating characteristics under large disturbances. Simulation results show that the PSS can not only effectively increase the system damping, but also can improve operational characteristics of the generator, considerably enhance power system dynamic and transient stability.%文中介绍了电力系统附加励磁控制-电力系统稳定器(PSS)的工作原理及其数学模型。通过建立典型单机-无穷大系统的仿真模型，模拟了系统在大扰动下暂态过程的运行特性。仿真结果表明PSS不但能够有效地提高系统的阻尼作用，而且可以改善发电机的运行特性，提高电力系统的动态及暂态稳定性。