Variable Structure Load Frequency Control of Power System

摘要

Power-system load-frequency control by variable structure controller is proposed. To ease the design effort and improve the performance of the controller, second order variable structure control combine with integral sliding is developed. Overall system is asymptotically stable, for all admissible system parametric uncertainties, when all the local load frequency controllers are working together. Simulations confirm that the proposed second order variable structure control can rebalance power and resynchronize bus frequencies after a disturbance with significantly improved transient performance.