A method of detecting interturn short-circuits in the rotor winding by analyzing the magnetic field in the stator-to-rotor gap of a hydrogenerator is discussed. For the purpose of theoretical justification, the magnetic field is analyzed numerically using the finite-element method in the cases of presence and absence of short-circuited turns in the rotor winding. The numerical results are compared with experimental data for a 640 MW hydrogenerator.
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Translated from Élektricheskie Stantsii, No. 8, August 2015, pp. 58 – 62.
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Verkhovtsev, D.A., Gulai, S.A. Detection of Interturn Short-Circuits in the Rotor Winding of a Hydrogenerator. Power Technol Eng 49, 393–396 (2016). https://doi.org/10.1007/s10749-016-0635-5
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DOI: https://doi.org/10.1007/s10749-016-0635-5