Robust H∞ load frequency control of delayed multi-area power system with stochastic disturbances
Robust H∞ load frequency control of delayed multi-area power system with stochastic disturbances
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DOI：
10.1016/j.neucom.2016.01.066
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发表时间：
2016-06
期刊：
影响因子：
6
通讯作者：
Yonghui Sun;Ning Li;Xuemao Zhao;Zhi-nong Wei;Guo-qiang Sun;Can Huang
中科院分区：
文献类型：
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作者：
Yonghui Sun;Ning Li;Xuemao Zhao;Zhi-nong Wei;Guo-qiang Sun;Can Huang
本文考虑大量可再生能源并入电网引起的随机扰动，详细讨论了时滞多区域电力系统鲁棒H∞负荷频率控制问题。考虑到不同控制区域之间信号传输引起的时滞，分别提出了两种不同的控制器设计策略，即状态反馈控制器和延迟状态反馈控制器设计策略。基于Lyapunov稳定性理论，以线性矩阵不等式的形式提出了几个不太保守的稳定性条件，以保证多区域电力系统的频率稳定性，其中最优衰减水平也可以通过求解约束优化问题来获得。最后，提供了基于两区互联电力系统的仿真结果，以证明所开发结果的实用性和有效性。
In this paper, by taking into account stochastic disturbances induced by the integration of large number of renewable energy resources into power grid, the robust H∞ load frequency control problem for multi-area power system with time delay is discussed in detail. Considering time delay induced by signal transmission between different control areas, two different controller designing strategies, namely the state feedback controller and the delayed state feedback controller designing strategies are proposed, respectively. Based on Lyapunov stability theory, several less conservative stability conditions are developed in the form of linear matrix inequalities to ensure the frequency stability of multi-area power system, where the optimal attenuation level can also be obtained by solving the constrained optimization problem. Finally, simulation results based on a two-area interconnected power system are provided to demonstrate the usefulness and effectiveness of the developed results.