LFC and stabilisation of multi-area interconnected power system by decentralized control of a SMES and solid-state phase shifters

Abstract

This paper proposes a decentralized direct tie-line power flow control strategy of a superconducting magnetic energy storage (SMES) unit and a solid-state phase shifter (SSPS) for load frequency control (LFC) and power system stabilization in multi-area interconnected power systems. Simulation results distinctly exhibit that, under the occurrence of sudden load fluctuations or some disturbances in any areas, the proposed control strategy is capable of suppressing the area frequencies as well as stabilizing inter-area oscillations modes, simultaneously and effectively.