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[en] Comparing time-series is a frequent task in many scientific fields. In power systems, in particular,
it may be of interest to compare the outputs of a simplified and a detailed model, or to validate the output of a model with respect to a measured time response. The classical Euclidean distance, involving pairs of points of the two data series aligned in time, is not suited to the practical time evolutions met in power systems, which often involve variable time delays and jumps at discrete times. In this paper, an alternative measure of proximity, stemming from other scientific fields, is proposed for power system applications. It consists in warping the time axis to guarantee the best match between the two time-series, i.e. it maps points on two curves that are not aligned in time so as to minimize the sum of squared differences of their ordinates. Modifications and adaptations of the classical algorithm to better fit power system problems are discussed. The method is illustrated through three representative curve comparison problems. A multi-dimensional extension allowing system-wide measures of similarity is also proposed.
Disciplines :
Electrical & electronics engineering
Author, co-author :
Fabozzi, Davide ; Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Systèmes et modélisation
Van Cutsem, Thierry ; Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Systèmes et modélisation
Language :
English
Title :
Assessing the Proximity of Time Evolutions through Dynamic Time Warping
Publication date :
December 2011
Journal title :
IET Generation, Transmission and Distribution
ISSN :
1751-8687
eISSN :
1751-8695
Publisher :
Institution of Engineering & Technology
Volume :
5
Issue :
12
Pages :
1268-1276
Peer reviewed :
Peer Reviewed verified by ORBi
European Projects :
FP7 - 211407 - PEGASE - Pan European Grid Advanced Simulation and state Estimation
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Bibliography
Schwer, L.E.: 'Validation metrics for response histories: perspectives and case studies', Eng. Comput., 2007, 23, (4), p. 295-30910.1007/s00366-007-0070-1
Vintsyuk, T.K.: 'Speech discrimination by dynamic programming', Kibernetika (in Russian), 1968, 4, (1), p. 81-8810.1007/BF01074755
Sakoe, H., and Chiba, S.: 'Dynamic programming algorithm optimization for spoken word recognition', IEEE Trans. Acoust. Speech Signal Process., 1978, 26, (1), p. 43-4910.1109/TASSP.1978.1163055 0096-3518
Tormene, P., Giorgino, T., Quaglini, S., and Stefanelli, M.: 'Matching incomplete time series with dynamic time warping: an algorithm and an application to post-stroke rehabilitation', Artif. Intell. Med., 2009, 45, (1), p. 11-3410.1016/j.artmed.2008.11.007 0933-3657
Keogh, E.J., and Pazzani, M.J.: 'Derivative dynamic time warping', Proc. First SIAM Int. Conf. on Data Mining, Chicago, IL, USA, April 2001, p. 1-11
Efrat, A., Fan, Q., and Venkatasubramanian, S.: 'Curve matching, time warping, and light fields: new algorithms for computing similarity between curves', J. Math. Imaging Vis., 2007, 27, (3), p. 203-21610.1007/s10851-006-0647-0 0924-9907
Youssef, A.M., Abdel-Galil, T.K., El-Saadany, E.F., and Salama, M.M.A.: 'Disturbance classification utilizing dynamic time warping classifier', IEEE Trans. Power Deliv., 2004, 19, (1), p. 272-27810.1109/TPWRD.2003.820178 0885-8977
Kong, Y., and Liu, S.: 'Power system transient stability assessment based on geometric features of disturbed trajectory and dtw', Proc. Sixth Int. Conf. on Natural Computation, (ICNC 2010), Yantai, China, August 2010, p. 485-489
Vidal Ruiz, E., Casacuberta Nolla, F., and Rulot Segovia, H.: 'Is the DTW distance really a metric? An algorithm reducing the number of DTW comparisons in isolated word recognition', Speech Commun., 1985, 4, (4), p. 333-34410.1016/0167-6393(85)90058-5 0167-6393
Glavic, M., and Van Cutsem, T.: 'Wide-area detection of voltage instability from synchronized phasor measurements. Part II: simulation results', IEEE Trans. Power Syst., 2009, 24, (3), p. 1417-142510.1109/TPWRS.2009.2023272 0885-8950
Fabozzi, D., and Van Cutsem, T.: 'Simplified time-domain simulation of detailed long-term dynamic models', Proc. IEEE PES General Meeting, Calgary, AB, Canada, July 2009, pp. 1-8, available at http://ieeexplore.ieee.org, (doi 10.1109/PES.2009.5275463) and http://hdl.handle.net/2268/9524.
Fabozzi, D., Chieh, A.S., Panciatici, P., and Van Cutsem, T.: 'On simplified handling of state events in time-domain simulation', Accepted for presentation at the 17th Power System Computation Conf. (PSCC), Stockholm, Sweden, August 2011, pp. 1-9, available at http://hdl.handle.net/2268/91650.
Van Cutsem, T., and Vournas, C.: 'Voltage stability of electric power systems', Springer 1998)
http://www.fp7-pegase.eu/, accessed May 2011
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