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Novel identification method of stator single phase-to-ground fault for cable-wound generators / Gao, Yan in IEEE transactions on energy conversion, Vol. 23 n°2 (Juin 2008) 

Public ISBD [article]  in IEEE transactions on energy conversion > Vol. 23 n°2 (Juin 2008) . - pp. 349 - 357 Titre : Novel identification method of stator single phase-to-ground fault for cable-wound generators Type de document : texte imprimé Auteurs : Gao, Yan, Auteur ; Xiangning Lin, Auteur ; Qing Tian, Auteur Année de publication : 2008 Article en page(s) : pp. 349 - 357 Note générale : Energy conversion Langues : Anglais (eng) Mots-clés : Electric  generators;  electrical  faults;  fault  diagnosis;  stators Résumé : A new criterion to detect the stator single phase-to-ground fault for Powerformer is proposed in this paper, which is based on the direction of zero-sequence compositive power flow. By virtue of the analysis of new fault characteristics of Powerformer and the comparison with conventional methods, a novel identification scheme is put forward. The proposed approach detects the ground fault by analyzing the power direction. Only zero-sequence current from the terminal of Powerformer and zero-sequence voltage from the busbar are used in this scheme. Combined with third-harmonic principle, it can provide a 100% coverage of fault detection for the stator windings of Powerformer. The effectiveness of this scheme is validated with the Matlab simulation results. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4505389&sortType%3Das [...] [article] Novel identification method of stator single phase-to-ground fault for cable-wound generators [texte imprimé] / Gao, Yan, Auteur ; Xiangning Lin, Auteur ; Qing Tian, Auteur . - 2008 . - pp. 349 - 357. Energy conversion Langues : Anglais (eng) in IEEE transactions on energy conversion > Vol. 23 n°2 (Juin 2008) . - pp. 349 - 357 Mots-clés : Electric  generators;  electrical  faults;  fault  diagnosis;  stators Résumé : A new criterion to detect the stator single phase-to-ground fault for Powerformer is proposed in this paper, which is based on the direction of zero-sequence compositive power flow. By virtue of the analysis of new fault characteristics of Powerformer and the comparison with conventional methods, a novel identification scheme is put forward. The proposed approach detects the ground fault by analyzing the power direction. Only zero-sequence current from the terminal of Powerformer and zero-sequence voltage from the busbar are used in this scheme. Combined with third-harmonic principle, it can provide a 100% coverage of fault detection for the stator windings of Powerformer. The effectiveness of this scheme is validated with the Matlab simulation results. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4505389&sortType%3Das [...]