Detecting synchrophasors computed over fault/switching transients
- Author(s): Sarasij Das 1 and Tarlochan Sidhu 2
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View affiliations
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Affiliations:
1:
Electrical and Computer Engineering, University of Western Ontario, London, Canada;
2: Faculty of Engineering and Applied Science, University of Ontario Institute of Technology, Oshawa, Canada
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Affiliations:
1:
Electrical and Computer Engineering, University of Western Ontario, London, Canada;
- Source:
Volume 8, Issue 9,
September 2014,
p.
1616 – 1625
DOI: 10.1049/iet-gtd.2013.0493 , Print ISSN 1751-8687, Online ISSN 1751-8695
Faults and switching operations often cause step changes in voltage and current waveforms. A fault/switching transient synchrophasor is computed over a window of pre- and post-fault/switching samples. Many synchrophasor applications are not designed to use these transient synchrophasors. So, there is a need to detect fault/switching transient synchrophasors. A robust algorithm is proposed to detect synchrophasors computed over switching/fault transients. The proposed algorithm runs in phasor measurement unit. The proposed algorithm performs satisfactorily in the presence of noises, harmonics, off nominal frequencies, decaying DC and missing/bad samples. The proposed algorithm can detect fault/switching transient synchrophasors caused by smaller or larger disturbances. The proposed algorithm is simple, non-iterative and mainly needs additions. Possible applications of the proposed algorithm are also discussed.
Inspec keywords: phasor measurement
Other keywords: fault-switching transient synchrophasor; current waveform; synchrophasors detection; robust algorithm; voltage waveform
Subjects: Power system measurement and metering; Electric and magnetic variables measurement methods
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