基于灰色预测的自动准同期并列系统建模与仿真

Modeling and Simulation of Automatic Quasi-synchronization System Based on Grey Prediction

基于Matlab/Simulink对同步发电机自动准同期并列系统进行了建模与仿真研究,把灰色预测算法引入到自动准同期控制中,利用灰色预测GM(1,1)模型建立了灰色预测自动准同期控制模型,并以单机无穷大系统的频率波动为对象对其控制效果进行仿真,结果表明灰色预测自动准同期控制系统可以有效地捕捉合闸时机,提高并列速度。在系统频率波动的情况下,灰色预测自动准同期控制系统与传统预测相比,合闸效果得到改善。

This paper makes the modeling and simulation of automatic quasi-synchronizing system for synchronous generator based on Matlab/Simulink, establishes a grey prediction automatic quasi-synchronizing control model with GM （1,1）, and also makes the simulation experiment to test the control effect based on the frequency fluctuation of a single machine infinite bus system. The results show that the automatic quasi-synchronization control system with grey prediction can effectively judge the closing opportunity and speed up the process of quasi-synchronization. Compared with traditional prediction, the system with the grey prediction can improve the closing effect under the condition of system frequency fluctuation.