同步发电机励磁控制系统动态特性研究(张玉林).doc

同步发电机励磁控制系统动态特性研究(张玉林) 摘 要 同步发电机是电力系统的能量提供者，而励磁控制系统是同步发电机的重要组成部分，它的控制性能的好坏直接影响发电机及电力系统的可靠性和稳定性。本文利用MATLAB在SIMULINK下对完整励磁系统进行仿真的方式对励磁控制系统进行了研究并通过分析励磁控制系统的动态特性得出了相关结论，同时，通过故障实验对励磁控制系统的运行状况有了进一步的研究。 本文从同步发电机和励磁控制系统的基本模型入手，通过建立同步发电机完整的励磁控制系统的仿真模型，研究了关于励磁控制系统的工作原理，并对PID控制器、PSS电力系统稳定器以及限幅环节进行了研究。 本文主要针对的是同步发电机的励磁控制系统的动态特性的研究，通过建立完整励磁控制系统的仿真模型研究分析励磁控制系统在电力系统正常运行和故障运行时的动态特性。同时，鉴于励磁控制系统仿真的重复性以及操作的复杂性，本文在对励磁控制系统进行仿真时还引入了POWERGUI模块，可以方便地实现对参数的设置与修改、模型的查看和修正、仿真的显示以及相关的辅助操作等，可以极大地简化仿真的操作过程，提高仿真效率。 关键词：同步发电机 励磁控制 MATLAB PID控制器 PSS ABSTRACT Synchronous generator power is the energy of the system provider, and excitation control system is an important part of synchronous generator and its control performance will have a direct impact on generators and power system reliability and stability. This paper use of MATLAB in SIMULINK to complete the excitation system under the way of excitation control system and through the analysis of excitation control system dynamic characteristics related conclusions obtained, meanwhile, through the experiments of excitation control system fault of the status of the have a further study. This article from the synchronous generator and excitation control system of the basic model, and by establishing a synchronous generator excitation control system of the complete simulation model, and the research about excitation control system of the working principle, and the PID controller, PSS power system stabilizer and amplitude limit links. This article mainly aims at the synchronous generator excitation control system dynamic characteristics, and by establishing a complete excitation control system simulation model of excitation control system research and analysis in the normal operation of the power system fault and the dynamic characteristic of the operation. Meanwhile, in view of excitation control system simulation of the complexity of the operation and the repeatability, the excitation control system are also intro