Resilient Reliable Hθ Load Frequency Control of Power System With Random Gain Fluctuations
针对电力系统中外部负荷扰动、随机执行器故障和增益波动，提出一种弹性可靠的H∞负荷频率控制方法，利用伯努利分布建模随机变量，并通过仿真验证了该方法比现有结果更优。
This article proposes a resilient reliable H∞ load frequency control (LFC) design for power system involving the external load disturbances, stochastic actuator failures, and randomly occurring gain fluctuations. In this regard, the separate random variables are introduced which characterize the actuator failures and gain fluctuations in an individual manner that satisfies the Bernoulli distribution. The resilient reliable proportional-integral (PI)-type LFC is proposed by utilizing the resilient control scheme and the reciprocal convex technique along with the Lyapunov-Krasovskii functional (LKF), which guarantees the mean-square asymptotic stability of power system via H∞ performance index. Finally, the simulations are given to ensure the less conservative results of the proposed method when compared to the existing results.