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B. Vahidi ; S. H. Hosseinian ;Journal of Applied Research and Technology 2013, 11 (1)

Author: M. Moghimi Haji

Source: http://www.redalyc.org/


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Journal of Applied Research and Technology ISSN: 1665-6423 jart@aleph.cinstrum.unam.mx Centro de Ciencias Aplicadas y Desarrollo Tecnológico México Moghimi Haji, M.; Vahidi, B.; Hosseinian, S.
H. Current Transformer Saturation Detection Using Gaussian Mixture Models Journal of Applied Research and Technology, vol.
11, núm.
1, febrero, 2013, pp.
79-87 Centro de Ciencias Aplicadas y Desarrollo Tecnológico Distrito Federal, México Available in: http:--www.redalyc.org-articulo.oa?id=47426212006 How to cite Complete issue More information about this article Journals homepage in redalyc.org Scientific Information System Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Non-profit academic project, developed under the open access initiative   Current Transformer Saturation Detection Using Gaussian Mixture Models M.
Moghimi Haji, B.
Vahidi*, S.
H.
Hosseinian Department of Electrical Engineering Amirkabir University of Technology Tehran, Iran *vahidi@aut.ac.ir ABSTRACT This paper presents a novel current transformer (CT) saturation detection approach based on Gaussian Mixture Models (GMMs).
High accuracy is the advantage of this method.
GMMs are trained with secondary current of CT.
The appropriate performance of the proposed method is tested by simulation of different fault conditions in PSCAD-EMTDC software.
The results show that the trained GMMs can successfully detect CT saturation with high accuracy. Keywords: CT saturation, GMM, protective relaying, transient analysis.   1.
Introduction Current transformer (CT) saturation distorts the secondary current and in consequence leads to operating delay or malfunction of protection relays (e.
g.
under reaching of over current relays, overestimation of fault loop impedance in distance relays) [1].
Therefore an appropriate saturation detection method is necessary to maintain the protection system reliability. A method for detecting CT saturation onset based on the abrupt change...





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