Performance assessment of primary frequency regulation based on static characteristics

Abstract

Regulation deadband and speed governor droop are two important performance indicators in the primary frequency regulation of thermal power unit. Coal quality, operation mode, and non-linearity of a regulating valve may cause the deviation between the frequency modulation performance index and the set value. In this paper, a static frequency characteristic curve is obtained from the daily operation data of the generator unit, and the method of estimating the deadband and the speed governor droop is proposed. The effectiveness of the proposed method is verified by industrial examples.