A fault-transient synchrophasor is computed over a window of pre-fault and fault samples. A fault synchrophasor is computed over a window of fault samples only. Fault-transient synchrophasors are discarded and are generally not used in the synchrophasor applications. Recently, an algorithm has been proposed to compute fault synchrophasor from fault-transient synchrophasor in phasor data concentrator (PDC). The accuracy of the existing algorithm deteriorates due to fault-induced transients and inaccurate fault starting time. A robust algorithm has been proposed to compute fault synchrophasor from fault-transient synchrophasor in PDC. The proposed algorithm does not use fault starting time in the calculations. It also performs better than the existing algorithm when fault-induced transients are present in the signal. The proposed algorithm is simple, non-iterative and performs satisfactorily in various investigated scenarios. The advantage of the proposed algorithm has been demonstrated in the context of fault location application.

References

1. 1)
  - S.M. Brahma . Fault location on a transmission line using synchronized voltage measurements. IEEE Trans. Power Deliv. , 4 , 1619 - 1622
2. 2)
  - 1. IEEE Standard for Synchrophasor Measurements for Power Systems, IEEE Std C37.118.1™-2011 (Revision of IEEE Std C37.118-2005).
3. 3)
  - 9. Platas-Garza, M.A., de la O Serna, J.A.: ‘Dynamic phasor and frequency estimates through maximally ﬂat differentiators’, IEEE Trans. Instrum. Meas., 2010, 59, (2), pp. 1803–1811 (doi: 10.1109/TIM.2009.2030921).
4. 4)
  - 16. Sodhi, R., Srivastava, S.C., Singh, S.N.: ‘A transient monitor to reflect the quality of synchrophasors’. IEEE Power and Energy Society General Meeting, 2010.
5. 5)
  - 22. Jiang, Q., Li, X., Wang, B., Wang, H.: ‘PMU-based fault location using voltage measurements in large transmission networks’, IEEE Trans. Power Deliv., 2012, 27, (3), pp. 1644–1652 (doi: 10.1109/TPWRD.2012.2199525).
6. 6)
  - 7. Wang, C., Dou, C., Li, X., Jia, Q.: ‘A WAMS/PMU-based fault location technique’, Electr. Power Syst. Res., 2007, 77, (8), pp. 936–945 (doi: 10.1016/j.epsr.2006.08.007).
7. 7)
  - 14. Schweitzer, E.O., Whitehead, D.E.: ‘Real-time power system control using synchrophasors’. 2008 IEEE 61st Annual Conference for Protective Relay Engineers, 2008.
8. 8)
  - 13. Das, S.: ‘Algorithms to Improve Performance of Wide Area Measurement Systems of Electric Power Systems’. PhD Thesis, The University of Western Ontario, 2014.
9. 9)
  - 13. Kang, N., Liao, Y.: ‘Double-circuit transmission-line fault location with the availability of limited voltage measurements’, IEEE Trans. Power Deliv., 2012, 27, (1), pp. 325–336 (doi: 10.1109/TPWRD.2011.2168547).
10. 10)
  - 7. de la O Serna, J.A., Martin, K.: ‘Improving phasor measurements under power system oscillations’, IEEE Trans. Power Syst., 2003, 18, (1), pp. 160–166 (doi: 10.1109/TPWRS.2002.807033).
11. 11)
  - 11. 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.
12. 12)
  - 24. Phadke, A.G., Kasztenny, B.: ‘Synchronized phasor and frequency measurement under transient conditions’, IEEE Trans. Power Deliv., 2009, 24, (1), pp. 89–95 (doi: 10.1109/TPWRD.2008.2002665).
13. 13)
  - 15. ‘SIMEAS R – Digital Fault Recorder with Power Quality (PQ) or Phasor Measurement Unit (PMU)’, Excerpt from catalog, Siemens.
14. 14)
  - 12. Tziouvaras Demetrios, A., Hou, D.: ‘Out-of-step protection fundamentals and advancements’. 2004 IEEE 57th Annual Conference for Protective Relay Engineers, 2004.
15. 15)
  - S.M. Brahma . Fault location scheme for a multi-terminal transmission line using synchronized voltage measurements. IEEE Trans. Power Deliv. , 2 , 1325 - 1331
16. 16)
  - 22. Liu, C.W., Lin, T.C., Yang, J.Z.: ‘A fault location technique for two-terminal multisection compound transmission lines using synchronized phasor measurements’, IEEE Trans. Smart Grid, 2012, 3, (1), pp. 113–121 (doi: 10.1109/TSG.2011.2171198).
17. 17)
  - 4. Zhang, Z., Korovin, O., Mutnuri, S., Hamour, I., Voloh, I., Jiang, L.: ‘An innovative timestamp-based convolution integral method in synchrophasor estimation within digital relays’. 2011 IEEE Int. Conf. Advanced Power System Automation and Protection (APAP), Beijing, China, 16–20 October 2011.
18. 18)
  - K. Takagi , Y. Yomakoshi , M. Yamaura , R. Kondow , T. Matsushima . Development of a new type fault locator using the one terminal voltage and current data. IEEE Trans. Power Appar. Syst. , 2892 - 2898

Robust algorithm to estimate fault synchrophasor from fault-transient synchrophasor in phasor data concentrator

References

Related content