access icon free Detecting synchrophasors computed over fault/switching transients

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

References

    1. 1)
      • 16. Zhang, Q., Luo, X., Bertagnolli, D., et al: ‘PMU data validation at ISO New England’. 2013 IEEE Power and Energy Society General Meeting (PES), 2013.
    2. 2)
      • 29. Das, S., Sidhu, T.: ‘A new algorithm to compute fault synchrophasor from transient state synchrophasor in PDC’. IEEE PES General Meeting 2013, Vancouver, 21–25 July 2013.
    3. 3)
      • 14. IEEE Standard for Synchrophasor Measurements for Power Systems, IEEE Std C37.118.1™-2011 (Revision of IEEE Std C37.118–2005).
    4. 4)
      • 2. Zweigle, G.C., Anderson, L.S., Guzman-casillas, A.: ‘Apparatus and method for estimating synchronized phasors at predetermined times referenced to an absolute time standard in an electrical system’. US Patent, 7,480,580 B2, 2009.
    5. 5)
      • 5. Sachdev, M.S., Wood, H.C., Johnson, N.G.: ‘Kalman filtering applied to power system measurements for relaying’, IEEE Trans. Power Appar. Syst., 1985, PAS-104, (12), pp. 35653573.
    6. 6)
    7. 7)
      • 22. Korkali, M., Abur, A.: ‘Detection, identification, and correction of bad sensor measurements for fault location’. 2012 IEEE Power and Energy Society General Meeting, 2012.
    8. 8)
    9. 9)
    10. 10)
      • 33. Castello, P., Lixia, M., Muscas, C.: ‘Measurement of synchrophasors under dynamic conditions’. 2010 IEEE Int. Workshop on Applied Measurements for Power Systems (AMPS), 2010.
    11. 11)
      • 23. Shi, D., Tylavsky, D.J., Logic, N., et al: ‘Identification of short transmission-line parameters from synchrophasor measurements’. IEEE Power Symposium, 2008. NAPS'08. 40th North American, 2008.
    12. 12)
    13. 13)
    14. 14)
    15. 15)
      • 15. Grid Protection Alliance: ‘OpenPDC’, 2011. Available at: http://openpdc.codeplex.com/.
    16. 16)
    17. 17)
      • 19. Zivanovic, R., Cairns, C.: ‘Implementation of PMU technology in state estimation: an overview’. IEEE AFRICON Fourth AFRICON, 1996, vol. 2.
    18. 18)
    19. 19)
    20. 20)
    21. 21)
    22. 22)
    23. 23)
      • 27. Phadke, A.G., Thorp, J.S.: ‘Synchronized phasor measurements and their applications’ (Springer, 2008).
    24. 24)
    25. 25)
    26. 26)
      • 30. Tziouvaras, D.A., Hou, D.: ‘Out-of-step protection fundamentals and advancements’. 57th IEEE Annual Conf. for Protective Relay Engineers, 2004.
    27. 27)
      • 28. Sodhi, R., Srivastava, S.C., Singh, S.N.: ‘A transient monitor to reflect the quality of synchrophasors’. 2010 IEEE Power and Energy Society General Meeting, 2010.
    28. 28)
    29. 29)
    30. 30)
    31. 31)
    32. 32)
      • 32. Benmouyal, G., Stanley, E., Zocholl, S.E.: ‘The impact of high fault current and CT rating limits on over-current protection’. 29th Annual Western Protective Relay Conf., Spokane, WA, 2002, vol. 23.
    33. 33)
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