Abstract
This paper centers on the design of highly robust observer sliding mode (HROSM)-based load frequency and tie-power control to compensate for primary frequency control of multi-area interconnected power systems integrated with renewable power generation. At first, the power system with external disturbance is model in the state space form. Then the state observer is used to estimate the system states which are difficult or expensive to measure. Secondly, the sliding mode control (SMC) is designed with a new single phase sliding surface (SPSS). In addition, the whole system asymptotic stability is proven with Lyapunov stability theory based on the linear matrix inequality (LMI) technique. The new SPSS without reaching time guarantees rapid convergence of high transient frequency, tie-power change as well as reduces chattering without loss of accuracies. Therefore, the superiority of modern state-of-the-art SMC-based frequency controllers relies on good practical application. The experimental simulation results on large interconnected power systems show good performance and high robustness against external disturbances when compared with some modern state of art controllers in terms of overshoots and settling time.
Highlights
Received: 15 December 2020High level penetration of renewable generation systems into interconnected multi-area generation systems will make power sectors more economical and reliable to deliver power to end users
We briefly describe the power system which consists of Experimental simulation results depict the better performance in terms settling time
load frequency control (LFC) problems in multi-area power integrated with renewable power
Summary
High level penetration of renewable generation systems into interconnected multi-area generation systems will make power sectors more economical and reliable to deliver power to end users. SMC combined with an observer has been applied for LFC studies in controllers discussed inA the literature were designed with allcontrol power system states asstates To solve this problem, the based observer technique is employed has been applied forand studies in power systems robust higher observer good performance robustness ofSMC which lies on the switching law and power systems via nonlinear super twisting. We briefly describe the power system which consists of Experimental simulation results depict the better performance in terms settling time In this part, we model the considered large interconnected power system and three area interconnected electricity systems with non-reheat turbines shown in Figure the wind farms. Each block represents power generation components with their dynamics and subsystem parameters
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