An optimally tuned modified active disturbance rejection controller for power system load frequency control

An optimally tuned Modified Active Disturbance Rejection Control (MADRC) scheme is presented for power system load frequency problem. MADRC has to two gains namely observer gains and controller gains, whose are selected optimally to achieve desired control performance. This paper explores the idea of formulating the tuning problem as a constrained multi-objective optimization problem. To realize this idea a unified objective function which is a weighted sum of problem specific objective functions is formulated and is optimized by Teaching Learning Based Optimization (TLBO). The performance of the proposed approach has been tested on single-area power systems with an aim to regulate frequency. The simulation results validate the effectiveness of the optimally tuned MADRC in comparison with existing strategies in the presence of sudden load disturbances and system parameter variations.

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