DocumentCode :
2373555
Title :
Empirical orthogonal decomposition applied to transmission line protection
Author :
Aguilar, R.P. ; Pérez, F.E. ; Orduña, E.A. ; Castrillón, N.J.
Author_Institution :
Inst. de Energia Electr.,IEE, Univ. Nac. de San Juan, San Juan, Argentina
fYear :
2011
fDate :
19-21 Oct. 2011
Firstpage :
1
Lastpage :
7
Abstract :
In protective relaying, reducing the fault clearance time is always desired for ensuring transient stability and also for reducing damage on the equipment. With this purpose, protection schemes based on the analysis of off-nominal frequencies are being investigated. Most proposals on this field use sine-cosine decomposition techniques for spectral analysis of transient signals. However those techniques fail to provide simplified information since results spread in a wide frequency range. In this work, a representative sample of fault signals are used to find a small set of orthogonal functions which gives a better interpretation concerning fault generated transients. Results show that fault signals decomposed in terms of these orthogonal basis functions exhibit well-defined patterns, which can be used for recognizing the main features of fault events such as inception angle, fault type and fault location. 2 ms data windows are used, thus the methodology could be applied in high-speed protection schemes.
Keywords :
fault location; power transmission lines; power transmission protection; relay protection; spectral analysis; data windows; empirical orthogonal decomposition; fault clearance time reduction; fault generated transients; fault location; fault type; inception angle; off-nominal frequencies; orthogonal basis functions; orthogonal functions; protective relaying; sine-cosine decomposition techniques; spectral analysis; time 2 ms; transient signals; transmission line protection; Circuit faults; Fault location; Impedance; Matrix decomposition; Transient analysis; Vectors; Empirical orthogonal functions; PCA; Pattern recognition; Power system protection; Power system transients; Signal processing; Singular value decomposition;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Innovative Smart Grid Technologies (ISGT Latin America), 2011 IEEE PES Conference on
Conference_Location :
Medellin
Print_ISBN :
978-1-4577-1802-1
Type :
conf
DOI :
10.1109/ISGT-LA.2011.6083193
Filename :
6083193
Link To Document :
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