Appropriate Evaluation of Primary Frequency Response and Its Applications

Primary frequency response is a quintessential component that stabilizes power systems amid active power disturbances. However, the strength of primary frequency response, as calculated with disturbance events, shows a low consistency from event to event. Thus, its effectiveness as a system strength measure is questionable. This work shows that consistency and improved accuracy can be achieved on a statistical basis via event filtering. Event MW estimation and primary frequency response trending analyses are the applications presented in this paper. Synchronized field measurements in the Eastern Interconnection, powered by FNET/GridEye, are used for validation of the analyses and applications.