Decentralized Power Agreement for Improved Frequency Response in Interconnected Power Systems

Abstract

Maintaining grid frequency close to the nominal value is one of the fundamental objectives of electric power operations. In this paper, we develop a decentralized control algorithm to improve the frequency response in case of sudden loss of generation in an interconnected grid. We propose a Cyber-Physical Architecture that requires minimal information exchange between control areas to reduce the frequency deviation from the nominal, in a distributed manner and also act on a much faster time scale as compared to traditional frequency regulation schemes. To achieve this, a decentralized Power Agreement protocol is proposed and analyzed. Finally simulations are performed to demonstrate the effectiveness of proposed protocol in improving both transient and steady state performance of the system.