Fast discrimination of stable power swing with synchronous generator loss of excitation

Hamid Yaghobi

Fast discrimination of stable power swing with synchronous generator loss of excitation

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Author(s): Hamid Yaghobi ¹
- Affiliations: 1: Faculty of Electrical and Computer Engineering, Semnan University, Semnan, Iran
Source: Volume 10, Issue 7, 05 May 2016, p. 1682 – 1690
DOI: 10.1049/iet-gtd.2015.1045 , Print ISSN 1751-8687, Online ISSN 1751-8695

Received 28/08/2015, Accepted 16/11/2015, Revised 21/10/2015, Published 05/05/2016

Fast and accurate discrimination between stable power swing (SPS) and synchronous generator loss of excitation (LOE) has been a great concern for power engineers. Since there is no unbalance during SPS condition, detecting this phenomenon is still a challenge. LOE detection methods are prone to interpret an SPS as a LOE event. Over the last decade, several techniques have been developed for LOE protection that most of them are based on the impedance trajectory as it enters into the protective zone. Such methods may not be able to discriminate between SPS and LOE. Therefore, assigning a time delay is usually utilised to overcome the possible maloperation of the LOE relay. However, merely providing the intentional time delay to avoid maloperation in this condition is not a perfect solution. This study presents a fast detection approach for this condition. The combined proposed method is based on the derivatives of the machine's external variables (i.e. output reactive power and terminal voltage) and the variation of the fast Fourier transform coefficient of the three-phase active power available at the location of the relay. The main advantage of this method is its speed, security and sensitivity to distinguish between SPS and LOE.

References

1. 1)
  - 17. Ghorbani, A., Mozafari, B., Soleymani, S., et al: ‘Operation of synchronous generator LOE protection in the presence of shunt-FACTS ‘, Electr. Power Syst. Res., 2015, 119, pp. 178–186 (doi: 10.1016/j.epsr.2014.09.019).
2. 2)
  - 14. Yaghobi, H., Mortazavi, H., Ansari, K., et al: ‘A novel ﬂux-based method for synchronous generator loss of excitation protection’. Proc. of 25th Int. Power System Conf., Tehran, Iran, 2010, pp. 1–14.
3. 3)
  - 12. Yaghobi, H., Mortazavi, H.: ‘A novel method to prevent incorrect operation of synchronous generator loss of excitation relay during and after different external faults’, Int. Trans. Electr. Energy Syst. (ETEP), 2015, 25, (9), pp. 1717–1735 (doi: 10.1002/etep.1922).
4. 4)
  - 18. Ghorbani, A., Mozafari, B., Soleymani, S.: ‘A PMU-based LOE protection of synchronous generator in the presence of GIPFC’, IEEE Trans. Power Deliv., 2015, Published online in IEEE Online Library, doi: 10.1109/TPWRD.2015.2440314.
5. 5)
  - 11. Yaghobi, H., Mortazavi, H., Ansari, K., et al: ‘Study on application of flux linkage of synchronous generator for loss of excitation detection’, Int. Trans. Electr. Energy Syst., 2013, 23, pp. 802–817 (doi: 10.1002/etep.1626).
6. 6)
  - 2. North Electric Reliability Corporation (NERC): ‘Power plant and transmission system protection coordination’, Technical Reference Document, July 2010.
7. 7)
  - 11. Yaghobi, H.: ‘Impact of static synchronous compensator on flux-based synchronous generator loss of excitation protection’, IET Gener. Transm. Distrib., 2015, 9, (9), pp. 874–883.
8. 8)
  - 4. Mason, C.R.: ‘A new loss-of-excitation relay for synchronous generators’, AIEE Trans. III, Power Appar. Syst., 1949, 68, pp. 1240–1245.
9. 9)
  - 13. de Morais, A.P., Cardoso, G.Jr., Mariotto, L.: ‘An innovative loss-of-excitation protection based on the fuzzy’, IEEE Trans. Power Deliv., 2010, 25, (4), pp. 2197–2204 (doi: 10.1109/TPWRD.2010.2051462).
10. 10)
  - 26. IEEE working group on prime mover and energy supply models for system dynamic performance studies: ‘Hydraulic turbine and turbine control models for dynamic studies’, IEEE Trans. Power Syst., 1992, 7, (1), pp. 167–179 (doi: 10.1109/59.141700).
11. 11)
  - 20. Chothani, N., Bhalja, B., Parikh, U.: ‘New support vector machine-based digital relaying scheme for discrimination between power swing and fault’, IET Gener. Transm. Distrib., 2014, 8, (1), pp. 17–25 (doi: 10.1049/iet-gtd.2013.0020).
12. 12)
  - 19. Paudyal, S., Ramakrishna, G., Sachdev, M.S.: ‘Application of equal area criterion conditions in the time domain for out-of-step protection’, IEEE Trans. Power Deliv., 2010, 25, (2), pp. 600–609 (doi: 10.1109/TPWRD.2009.2032326).
13. 13)
  - 6. Berdy, J.: ‘Loss-of-excitation protection for synchronous generators’, AIEE Trans. I, Power Appar. Syst., 1975, 94, (5), pp. 1457–1463 (doi: 10.1109/T-PAS.1975.31987).
14. 14)
  - 1. IEEE Power System Relaying Committee Working Group D6: ‘Power swing and out-of-step considerations on transmission lines’, June 2005, Available at http://www.pespsrc.org/reports.
15. 15)
  - 27. IEEE Std. C37.102: ‘IEEE Guide for AC Generator Protection’, New York, 2006.
16. 16)
  - 21. So, K.H., Heo, J.Y., Aggarwal, R.K., et al: ‘Out-of-step detection algorithm using frequency deviation of voltage’, IET Gener. Transm. Distrib., 2007, 1, (1), pp. 119–126 (doi: 10.1049/iet-gtd:20050140).
17. 17)
  - 1. Mechraoui, A., Thomas, D.W.P.: ‘A new blocking principle with phase and earth fault detection during fast power swings for distance protection’, IEEE Trans. Power Deliv., 1995, 10, pp. 1242–1248 (doi: 10.1109/61.400902).
18. 18)
  - 5. Tremaine, R.L., Blackburn, J.L.: ‘Loss-of-ﬁeld protection for synchronous machines’, AIEE Trans. III, Power Appar. Syst., 1954, 73, (1), pp. 765–772.
19. 19)
  - 14. Sharaf, A.M., Lie, T.T.: ‘ANN based pattern classification of synchronous generator stability and loss of excitation’, IEEE Trans. Energy Convers., 1994, 9, (4), pp. 753–759 (doi: 10.1109/60.368331).
20. 20)
  - 8. Lin, X., Gao, Y., Liu, P.: ‘A novel scheme to identify symmetrical faults occurring during power swings’, IEEE Trans. Power Deliv., 2008, 23, pp. 73–78 (doi: 10.1109/TPWRD.2007.911154).
21. 21)
  - 12. Mahamedi, B., Zhu, J.G.: ‘A novel approach to detect symmetrical faults occurring during power swings by using frequency components of instantaneous three-phase active power’, IEEE Trans. Power Deliv., 2012, 27, pp. 1368–1376 (doi: 10.1109/TPWRD.2012.2200265).
22. 22)
  - 19. Amraee, T.: ‘Loss-of-field detection in synchronous generators using decision tree technique’, IET Gener. Transm. Distrib., IET, 2013, 7, (9) pp. 943–954 (doi: 10.1049/iet-gtd.2013.0138).
23. 23)
  - 12. Elsamahy, M., Faried, S.O., Sidhu, T.: ‘Impact of midpoint STATCOM on generator loss of excitation protection’, IEEE Trans. Power Deliv., 2014, 29, (2), pp. 724–732 (doi: 10.1109/TPWRD.2013.2281581).
24. 24)
  - 15. Amini, M., Davarpanah, M., Sanaye-Pasand, M.: ‘A novel approach to detect the synchronous generator loss of excitation’, IEEE Trans. Power Deliv., 2015, 30, (3), pp. 1429–1438 (doi: 10.1109/TPWRD.2014.2370763).
25. 25)
  - 25. IEEE Std. 421.5: ‘Recommended practice for excitation system models for power system stability studies’, 1992.
26. 26)
  - 16. Coelho, A.L.M., Carrer, C.E.B., Guerrero, C.A.V., et al: ‘Loss-of-excitation protection and underexcitation controls correlation for synchronous generators in a real time digital simulator’, IEEE Trans. Ind. Appl., 2015, 51, (5), pp. 3579–3590 (doi: 10.1109/TIA.2015.2424884).
27. 27)
  - 15. Pajuelo, E., Gokaraju, R., Sachdev, M.S.: ‘Identification of generator loss-of-excitation from power-swing conditions using a fast pattern classification method’, IET Gener. Transm. Distrib., 2013, 7, (1), pp. 24–36 (doi: 10.1049/iet-gtd.2012.0340).

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Fast discrimination of stable power swing with synchronous generator loss of excitation

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