Impact of Communication Delay on Load Frequency Control of Interconnected Power System

Nowadays, due to vulnerability of power system and upsurge in power demand, communication network is essential for secure operation, control and monitoring of power system. Time delay exists in communication channel can worsen the dynamic performance of closed loop of power system especially in load frequency control (LFC) problem. Due to time delay or some fault present on a system, some generator outage may take place from any well connected areas. So, in this paper an attempt is made to presents an impact of communication delay on frequency regulation of two area interconnected power system with outage of generator terminal from one area. Padé method is used to model the communication delay. A Proportional integral (PI) control based particle swarm optimization (PSO) technique is used to tune the controller gains. A series of simulation results are performed for various case studies, for the effectiveness of control design method mainly for dynamic response of system