A Novel Optimization Technique for LFC and Virtual Inertia Emulation of a Multi Area Hybrid Power System

Abstract

Frequency regulation is one of the important power quality issues of an interconnected power system. Load Frequency Control (LFC) is a classic approach for frequency regulation of the power system. The optimization techniques, used to optimize the parameters of controller used in LFC mechanism plays a vital role. On other hand, integration of Distributed Generation (DG) systems and corresponding power electronic converters ruins power system inertia. Through restoring inertia of the power system, improvement in the rate of change of frequency can be accomplished. This article discusses derivative based virtual inertia emulation technique using Energy Storage System (ESS) and its impact on power system's frequency regulation. At the same time, a new effective optimization technique, named Opposition Based Volleyball Premier League (OVPL) algorithm is used to optimize the essential parameters of controller and ESS. The effectiveness of the proposed work has been examined by deploying for a two area interconnected hybrid power system including nonlinearities. The performance of proposed algorithm is verified by comparing with several recent optimization techniques. The robustness of the work against wide range variation of power system model parameters.