Open AccessDetecting synchrophasors computed over fault/switching transients
Author(s) -
Das Sarasij,
Sidhu Tarlochan
Publication year - 2014
Publication title -
iet generation, transmission and distribution
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.92
H-Index - 110
eISSN - 1751-8695
pISSN - 1751-8687
DOI - 10.1049/iet-gtd.2013.0493
Subject(s) - phasor , transient (computer programming) , phasor measurement unit , fault (geology) , harmonics , waveform , computer science , control theory (sociology) , voltage , algorithm , engineering , electric power system , electronic engineering , power (physics) , electrical engineering , artificial intelligence , physics , control (management) , quantum mechanics , seismology , geology , operating system
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.