Abstract
Based on the analysis of the unit’s PFC(primary frequency control) operation process, combined with the grid performance assessment standards, it was concluded that the inherent delay and inertia of the unit equipment caused PFC action to fail. Aiming at the problem of lack of turbine speed dead-band estimation for the PFC performance evaluation of thermal power units, by constructing the correlation domain between the turbine speed difference and the actual power difference of the unit’s daily operating data, the turbine speed dead-band of the unit was estimated. An optimization control method based on command extra compensation for PFC was proposed to improve the qualified rate of unit’s PFC operation.
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