电网黑启动中发电机自励磁仿真研究

Simulation Research of Generator's Self-excitation in Black-start of Power Grid

介绍同步发电机产生自励磁现象的基本原理,利用MATLAB/SIMULINK和PSCAD/EMTDC 2种软件对黑启动方案进行自励磁仿真计算,经比较可知,计算结果与仿真结果一致,同时采用工程判据计算500 kV输电线路不发生自励磁的最大长度,认为此类黑启动方案均可忽略自励磁问题。

This paper introduces the basic principle of synchronous generator＇s self-excitation,simulates and calculates black-start path by MATLAB/SIMULINK and PSCAD/EMTDC,the simulation results and calculating results is same,meanwhile calculates the maximum length of 500 kV transmission line with the engineering criterion,and indicats that this kind of project can neglect self-excitation problem.