Time-localization of forced oscillations in power systems

TitleTime-localization of forced oscillations in power systems
Publication TypeConference Paper
Year of Publication2015
AuthorsJim Follum, John W Pierre
Conference Name2015 IEEE Power & Energy Society General Meeting2015 IEEE Power & Energy Society General Meeting
Date Published07/2015
Conference LocationDenver, CO, USA

In power systems forced oscillations occur, and identification of these oscillations is important for the proper operation of the system. Two of the parameters of interest in analyzing and addressing forced oscillations are the starting and ending points. To obtain estimates of these parameters, this paper proposes a time-localization algorithm based on the geometric analysis of the sample cross-correlation between the measured data and a complex sinusoid at the frequency of the forced oscillation. Results from simulated and measured synchrophasor data demonstrate the algorithm's ability to accurately estimate the starting and ending points of forced oscillations.