LMI-based Decentralized Load Frequency Control of a Hybrid Power System with a Virtual Synchronous Generator and Battery Storage

This paper proposes the participation of wind generation in the decentralized control of load frequency of a hybrid power system consisting of, in addition to wind generation, conventional generation and battery storage. The wind generation is modelled as a ' Virtual Synchronous Generator (VSG)' in a separate control area with its own virtual frequency. It has also been proposed to operate the wind generation system in a ' de-loaded ' mode, thereby allowing it to take part in frequency regulation services. For the purposes of a decentralized control design, the overall system model is decomposed into three subsystems. Static state-feedback control gains are computed by posing the decentralized control problem as a set of linear matrix inequalities (LMIs) subject to structural and stabilizing constraints. Copyright (c) 2023 The Authors.