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The evaluation of the insulation performances of the stator coil for the high power vertical synchronous hydro-generators by monitoring the level of partial discharges

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Abstract

The paper presents an evaluation procedure of the insulation performances of the stator coil of a 18 MW vertical synchronous hydro-generator by monitoring the level of partial discharge (PD). The evaluation was achieved after a 5 years’ period of operation with the purpose of establishing the maintenance works which are imposed having in view to bring the hydro-generator back to its initial performance parameters. By this method we create the possibility of highlighting some eventual degradations of the isolation, a fact which can contribute to the decrease of the service time, having negative repercussions on the safety during operation.

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Acknowledgements

The work has been funded by the Sectoral Operational Programme Human Resources Development 2007–2013 of the Ministry of European Funds through the Financial Agreement POSDRU/159/1.5/S/132395.

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Authors and Affiliations

  1. Eftimie Murgu University of Resita, Reşiţa, Romania

    Cornel Haţiegan, Ioan Padureanu, Marcel Romulus Jurcu & Mihaela Răduca

  2. Polytechnic University of Timisoara, Timişoara, Romania

    Marius Biriescu & Flaviu Dilertea

Authors
  1. Cornel Haţiegan
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  2. Ioan Padureanu
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  3. Marcel Romulus Jurcu
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  4. Marius Biriescu
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  5. Mihaela Răduca
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  6. Flaviu Dilertea
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Corresponding author

Correspondence to Cornel Haţiegan.

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Haţiegan, C., Padureanu, I., Jurcu, M.R. et al. The evaluation of the insulation performances of the stator coil for the high power vertical synchronous hydro-generators by monitoring the level of partial discharges. Electr Eng 99, 1013–1020 (2017). https://doi.org/10.1007/s00202-016-0471-5

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  • DOI: https://doi.org/10.1007/s00202-016-0471-5

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