LMI Based Load Frequency Controller Design for a Deregulated Power System with Time Delay

The frequency and voltage level determines the quality of the power system. The control and stability becomes more complicated in case of a deregulated power system due to multiple bilateral transactions. The inclusion of delay further complicates the load frequency control. This paper deals with the modelling and designing of a controller for load frequency control in an interconnected two area non-reheat deregulated power system considering the effect of time delay. LMI based feedback controller is designed to maintain system frequency. The ascendancy of the LMI based controller over the genetic algorithm optimised integral controller is also demonstrated.