Application of S-Transform for Fault Detection During Power Swing

(*) Corresponding author

Authors' affiliations

DOI's assignment:
the author of the article can submit here a request for assignment of a DOI number to this resource!
Cost of the service: euros 10,00 (for a DOI)


Distance relay is designed to block the tripping operation during a power swing. However, if a fault occurs during a power swing, it should be detected and unblocking function should be evoked to clear the fault as soon as possible. Fault detection during a power swing poses a challenging task. This paper presents an intelligent approach to detect fault during a power swing for correct distance relay operation based on S-Transform analysis on the active power at distance relay point. It is demonstrated that the proposed scheme is very fast and able to accurately discriminate the fault from power swing. To ascertain validity of the proposed scheme, simulations are carried out with the IEEE 9 and 14 bus test systems and its performance have been compared with the wavelet transform based power swing unblocking scheme.
Copyright © 2013 Praise Worthy Prize - All rights reserved.


Distance Protection; Power Swing; S-Transform; Symmetrical Fault, Unsymmetrical Fault

Full Text:



Noroozi, N., Khaki, B., Seifi, A., Chaotic oscillations damping in power system by finite time control theory, (2008) International Review of Electrical Engineering (IREE), 3 (6), pp. 1032-1038.

J. Holbach, New out of step blocking algorithm for detecting fast power swing frequencies, Power Systems Conf: Advanced Metering, Protection, Control, Communication, and Distributed Resources, March 14-17, 2006, Clemson, South Calorina.

L. Martuscello, E. Krizaukas, J. Holbach, L. Yuchen, Test of distance relay performance on stable and unstable power swings reported using simulated data of the August 14th 2003 system disturbances, Power Systems Conf: Advanced Metering, Protection, Control, Communication, and Distributed Resources, March 10-13, 2009, Clemson, South Calorina.

A. Saffarian, M. Sanaye-Pasand, Fast detector of symmetrical fault during power swing based on variation of active power, The International Conference on Electrical Engineering, July 6-10, 2008, Okinawa, Japan.

P. J. Moore, A. T. Johns, New method of power swing blocking for digital distance protection, IEEE Proceedings-Generation, Transmission and Distribution, vol. 143 n. 1, January 1996, pp. 19 – 26.

X. Lin, Y. Gao, P. Liu, A novel scheme to identify symmetrical faults occurring during power swings, IEEE Trans. on Power Delivery, vol. 23 n. 1, January 2008, pp 73 – 78.

B. Mahamedi, A very fast unblocking scheme for distance protection to detect symmetrical faults during power swing, 2010 9th International Power and Energy Conference, October 27-29, 2010, Singapore.

K. Seethalekshmi, S. N. Singh, S. C. Srivastava, SVM based power swing identification scheme for distance relays, 2010 IEEE Power and Energy Society General Meeting, July 25-29, 2010, Minneapolis, USA.

H. K. Zadeh, Z. Li, A novel power swing blocking scheme using adaptive neuro-fuzzy inference system, Electric Power Systems Research, vol. 78 n. 7, July 2008, pp. 1138 – 1146.

J. Faiz and S. Lotfifard, A novel wavelet-based algorithm for discrimination of internal faults from magnetizing inrush currents in power transformer, IEEE Trans. on Power Delivery, vol. 21 n. 4, October 2006, pp. 1989 – 1996.

S. M. Brahma, Distance relay with out-of-step blocking function using wavelet transform, IEEE Trans. on Power Delivery, vol. 22 n. 3, July 2007, pp. 1360 – 1366.

C. Pang and M. Kezunovic, Fast distance relay scheme for detecting symmetrical fault during power swing, IEEE Trans. on Power Delivery, vol. 25 n. 4, October 2010, pp. 2205 – 2212.

B. Mahamedi, A new power swing blocking function based on wavelet transform, 2nd International Conference on Electric Power and Energy Conversion System, November 15-17, 2011, Sharjah, United Arab States.

A. F. Abidin, A. Mohamed, H. Shareef, Adaptive distance protection to prevent false relay tripping during voltage collapse and power swing, Expert Systems with Applications: An International Journal, vol. 38 n. 12, November 2011, pp. 14969 – 14975.

Fengzhan Zhao, Power quality disturbances recognition using S-Transform, IEEE Trans. on Power Delivery, vol. 22 n. 2, April 2007, pp. 944 – 950.

Lee, C.-Y., Shen, Y.-X., Feature analysis of power quality disturbance in smart grid using S-transform and TT-transform, (2012) International Review of Electrical Engineering (IREE), 7 (2), pp. 4208-4220.

S. R. Samantaray, R. K. Dubey, L. N. Tripathy, B. C. Babu, Spectral energy function for fault detection during power swing, International Conference on Energy, Automation, and Signal (ICEAS), December 28-30, 2011, Bhubaneswar, India.

L. Xiangning, L. Zhengtian, K. Shuohao, G. Yan, Theoretical fundamentals and implementation of novel self-adaptive distance protection resistance to power swings, IEEE Trans. on Power Delivery, vol. 25 n. 3, July 2010, pp. 1372 – 1383.

A. Mecharaoui and D. W. P. Thomas, A new principle for high resistance earth fault detection during fast power swings for distance protection, IEEE Trans. Power Delivery, vol. 12 n. 4, October 1997, pp. 1452 – 1457.

Moravej, Z., Abdoos, A.A., Sanaye-Pasand, M., A new protection scheme for power transformers using time frequency analysis, (2011) International Review of Electrical Engineering (IREE), 6 (1), pp. 257-266.

Z. Zhou, X. Shen, D. Hou, S. Chen, “Analog simulator tests qualify distance relay designs to today’s stringent protection requirements”, 32nd Annual Western Protective Relay Conference, October 25-27, 2005, Spokane, WA.


  • There are currently no refbacks.

Please send any question about this web site to
Copyright © 2005-2024 Praise Worthy Prize