Steam governor based optimal power oscillation damping controller with solar penetrations

An optimal steam governor action has been proposed in present work to improve small signal stability (SSS) for renewable integrated hybrid power system (HPS). The steam governor has been equipped with auxiliary PID type damping controller, whose gains being set by Modified Differential Evolution (MDE) Algorithm. In MDE the movements of white, black and wormhole methodology from multi-verse-optimizer (MVO) has been implemented to improve the capacity of DE to leap out local optima and enhancing convergence capability. To examine performance of proposed governor action, different experimentations being conducted for multi-machine system with sudden solar penetrations & variable load demand. Variation in angular frequency and active power being considered for ITAE based minimization function. System response being observed with eigen distributions to verify damping capability of proposed control action and compared with DE & PSO algorithm. The steam governors can impart effective damping torque, if they are equipped with auxiliary optimal damping controller.