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An Optimal Automatic Generation Control Strategy for Interconnected Power Grid with Wind Power

机译：风电网互联电网的最佳自动生成控制策略

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摘要

As the continuous increase of wind power installed capacity in modern grid, its inherent randomness and fluctuation may cause a series of problems to power system frequency control. Since the dynamic characteristics of traditional automatic generation control (AGC) based on PI control cannot fully and effectively meet the interconnected power grid's requirements for load frequency control. In this paper, a strategy based optimal control theory is proposed, and a new dynamic cost function is also presented. Compared to the conventional PI control method, the proposed strategy has better dynamic adaptability to interconnected power system with wind generation, and the optimal coordination among control areas can be realized more easily. Take the two-area interconnected power system with wind power model as an example, the simulation is carried out based on MATLAB/SIMULINK. The simulation results show that the control strategy can obviously suppress the fluctuation of system frequency and tie-line power, and its effectiveness is confirmed.
机译：随着现代电网中风电力安装容量的连续增加，其固有的随机性和波动可能导致电力系统频率控制的一系列问题。由于基于PI控制的传统自动生成控制（AGC）的动态特性不能完全且有效地满足互联电网对负载频率控制的要求。本文提出了一种基于策略的最优控制理论，还提出了一种新的动态成本函数。与传统的PI控制方法相比，所提出的策略具有更好的动态适应性与风力产生的互连电力系统，并且可以更容易地实现控制区域之间的最佳协调。用风电模型采用两域互连电力系统，作为一个示例，基于MATLAB / SIMULINK执行模拟。仿真结果表明，控制策略明显抑制了系统频率和扎线功率的波动，确认其有效性。

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