A Coherence Method for Detecting and Analyzing Oscillations

Conference · Wed Jul 31 00:00:00 EDT 2013

DOI:https://doi.org/10.1109/PESMG.2013.6672430· OSTI ID:1324921

Zhou, Ning

In this paper, a coherence method is proposed to detect and analyze forced oscillations from phasor measurement unit data. The calculation of coherence spectrum is reviewed, and forced oscillations are related to the peaks in the coherence spectrum. Using simulation and field measurement data, the proposed coherence method’s performance is compared with the power spectral density method. When applied to detect and analyze forced oscillations under low signal noise ratio conditions, the proposed coherence method shows better performance.

• Research Organization: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1324921
• Report Number(s): PNNL-SA-92284; 400403209
• Resource Relation: Conference: IEEE Power and Energy Society General Meeting (PES 2013), July 21-25, 2013, Vancouver, British Columbia, Canada
• Country of Publication: United States
• Language: English

Related Subjects

coherence
power spectral density
phasor measurement unit (PMU)
oscillations
power system dynamics