基于MPC算法的互联电网负荷频率控制

Load Frequency Control of Interconnected Power System Based on MPC Algorithm

自动发电控制(AGC)是互联电网进行有功调频的首要方法,研究提出了一种基于模型预测控制(MPC)的互联电力系统负荷频率控制(LFC)设计方法。利用MPC算法使得由发电机参数摄动和负荷扰动形成的电网频率波动减小。为验证所提出方案的有效性,建立三区域互联电力系统频率响应模型并仿真,将MPC算法与常规的PID算法控制效果进行比较。结果表明,在负荷扰动、参数摄动和有通信延迟的情况下,MPC技术对互联电网的负荷频率控制性能均优于PID控制。

Automatic generation control（AGC）is the primary method for active frequency modulation in interconnected power grids.In this research,a design method of load frequency control（LFC）of interconnected power system based on model predictive control（MPC）is proposed.MPC algorithm is used to reduce the frequency deviation caused by generator parameter perturbation and load disturbance.In order to verify the effectiveness of the proposed scheme,the frequency reponse of a three-area interconnected power system model is established and simulated,and the MPC algorithm is compared with the conventional PID controller.The results show that the MPC controller has better performance than PID on the load frequency control of interconnected power system in the condition of load disturbance,parameter perturbation and communication delay.