Optimized Automatic Generation Control by SSSC and TCPS in Coordination with SMES for Two-Area Hydro-hydro Power System

In this paper, automatic generation control with interconnected two-area multiple-units hydro-hydro system is investigated. Such a hydro dominated system is dynamically unstable. To stabilize dynamically and also stabilize the frequency oscillations under perturbation of load, Static Synchronous Series Compensator (SSSC) and Thyristor Controlled Phase Shifters (TCPS) installed in series with the tie-line in coordination with Superconducting Magnetic Energy Storage (SMES) are proposed and their comparative transient responses are analyzed. The effectiveness of proposed frequency stabilizers is further guaranteed by analyzing the transient responses of the system with different system parameters and temporary/permanent tie-line outage. Gains of the integral controller in AGC loop and parameters of SSSC, TCPS and SMES are optimized with a novel particle swarm optimization, called as craziness-based particle swarm optimization (CRPSO). The performance of CRPSO is compared to that of real coded genetic algorithm (RGA) to establish its superiority.