Abstract
AbstractIn any power system, area load frequency control has become an important aspect. A robust and efficient controller is very much essential in today’s complex power system. In this research work, output feedback sliding mode controller (OFSMC) is developed, and a novel sliding mode controller which is based on proportional integral derivative (PID) sliding surface (PID-SMC) has been designed to deal with the load-frequency control problem. A simple two-area interconnected non-reheat turbine model is considered. OFSMC is designed for the two-area system. For OFSMC, output feedback is considered as sliding surface. Teaching–learning-based optimization (TLBO) algorithm is utilized to optimize the parameters of the switching vector and the feedback gain. Dynamic response of OFSMC is compared with PI and PID controllers tuned with recent competitive algorithms. Performance improvement is observed with OFSMC controller. In order to achieve a significant improvement in the system performances, the above-mentioned hybrid PID sliding surface-based SMC is designed.KeywordsMulti-area controlLoad frequency controlPID controllerSliding mode controllerTLBO
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