Grey Wolf Algorithm based Control Strategy for Load Frequency Control in Coordination with IPFC

Abstract

This paper highlights the effect of energy storage device i.e. Redox Flow Battery (RFB) in the interconnected power system. The overall power system contains conventional thermal, hydro, gas and wind power plant in a two area power system. The thermal power plant comprises certain physical non-linearities like Generation Rate Constraint (GRC) and Governor dead band (GDB) for realistic approach. This paper also comprises the effect of a Flexible Alternating Current (AC) Transmission System (FACTS) device i.e. Interline Power Flow Controller (IPFC) in series with tie line. A Proportional-Integral-Derivative (PID) controller with a derivative filter is introduced to control the power system and externally attenuate the noise in the system. At last a powerful meta-heuristic Grey Wolf Optimization (GWO) is used to tune controllers and other parameters in the system.