Abstract
The paper records the investigation of the effect of both the speed governor deadband and the generation rate constraint (GRC) on an optimal integral controller for the automatic generation control (AGC) of an interconnected power system. The effective application of the eigenvalue method for optimizing the primary control loop has been discussed. The investigation reveals that the presence of the speed governor deadband (DB) deteriorates the dynamic response considerably if the GRC is neglected but in the presence of the GRC, the deterioration in the dynamic response is tolerable. The present investigation compares the performance of the optimal integral controller with that of the Fosha-Elgerd optimal controller in the presence of the speed governor deadband.
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