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基于时滞模型预测控制算法的网络化AGC研究

, PP. 188-195

Keywords: 自动发电控制,通信延迟,模型预测控制,滚动优化

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Abstract:

针对网络化自动发电控制(AGC)系统通信延迟的不确定性和数据丢包问题,提出一种基于时滞模型预测控制(MPC)算法的网络化AGC系统,该方法采用计及通信延时的互联电网时滞动态状态方程作为MPC的原始预测模型,以最优加权算法预测通信延时;并在MPC滚动优化目标函数中增加输出量预测值变化量,以减少发电机组调节次数。利用MPC多步超前预测控制功能,在执行机构信号接收端设置缓存器存储控制量预测序列,作为网络偶发数据包丢失时的备用次优控制信号。通过对两区域互联电网网络化AGC系统的仿真分析,仿真结果表明该方法能确保在随机通信延迟下网络化AGC具有优异的动态响应性能,该系统对通信延迟变化具有良好的适应性和较强的鲁棒性。

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