Abstract
Automatic generation control is exhibited for an unequal three-area hybrid solar-hydro-thermal power system. The hybrid power system comprises of conventional thermal and solar thermal system in area1. Conventional thermal system and hydro system with electric governor are positioned in area2 and area3, respectively. The conventional thermal systems are provided with single reheat turbine. Suitable generation rate constraint is provided in both hydro and thermal systems. The system dynamics with and without solar thermal are evaluated separately, considering conventional secondary controllers. The evolutionary computational technique called grey wolf optimizer algorithm is applied for simultaneous optimization of controller gains. Analyses reveal that system responses, with and without solar thermal, for PID controller are improved in comparison to other controllers. Investigation infers that the responses with reference to the hybrid system are enhanced with faster settling time and lesser deviation as compared to the system in absence of solar thermal.
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