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EMTP based simulation of a self-excited induction generator after its disconnection from the grid

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4 Author(s)
Ouhrouche, M.A. ; Dept. of Electr. Eng., Ecole Polytech. de Montreal, Canada ; Do, X.D. ; Le, Q.M. ; Chaine, R.

A study of the application of an induction generator (IG) in power systems is presented in this paper. The Electromagnetic Transients Program (EMTP) is used to investigate the self-excitation phenomenon and the dynamic behaviour of the induction generator, resulting from the grid disconnection. The results demonstrate that, if the amount of the external reactive power source is sufficient to ensure self-excitation of the induction generator, high and abnormal overvoltages occur which can be dangerous for the insulation integrity of the nonutility generator (NUG) equipment, the local load and, even worse, for the maintenance personnel

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Energy Conversion, IEEE Transactions on  (Volume:13 ,  Issue: 1 )