In order to improve the signal to noise ratio for partial discharge (PD) detection using a resistance–temperature detector laid in the stator windings of a hydropower generator, the continuous wavelet transform (CWT) is applied as a kind of time‐frequency analysis. Relying on the combination of frequency resolution and time resolution using an applied power voltage phase angle distribution, PDs occurring in voids of stator windings are expected to be found within a mixed environment of strong noise and confusable noise. Furthermore, we found that the CWT may make it possible to calibrate the PD charge quantity in a band of a few tens of MHz under favorable conditions, where calibration is usually difficult for generator stator windings.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Partial Discharge Detection with High‐Frequency Band through Resistance–Temperature Sensor of Hydropower Generator Stator Windings



    Published in:

    Publication date :

    2016




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English



    Classification :

    BKL:    53.00 / 53.33 / 52.53 Kraftwerkstechnik / 53.31 / 52.53 / 53.33 Elektrische Maschinen und Antriebe / 53.00 Elektrotechnik: Allgemeines / 53.31 Elektrische Energieübertragung
    Local classification TIB:    770/5600/8000



    Motor-generator with multiple stator windings

    GIERAS JACEK F / ROZMAN GREGORY I | European Patent Office | 2019

    Free access



    Modeling of Induction Machines With Switched Stator Windings

    Scharfenstein, Daniel / Schuller, Stephan / Quabeck, Stefan et al. | IEEE | 2020


    Electric Machine With Stator Windings For Reduced Torque Ripple

    TANG CHUN / LIANG FENG / WU WEI et al. | European Patent Office | 2018

    Free access