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Coil Shorting Simulation in the Windings of a Triple-Phase Three-Winding Transformer

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Abstract

A mathematical model is proposed that allows simulating the currents in the transformer windings during turn shorting when the supply voltage is unbalanced in any load mode. The results of simulation of currents in windings and shorted coils depending on their number in the primary winding in the idle and load modes are presented. Verification of the adequacy of the model by comparing the results of calculation and experiment for the TT-6 transformer showed that the error in simulated currents when shorting a small number of turns does not exceed 10% and meets the requirements of relay protection.

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REFERENCES

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  2. Zasypkin, A.S., Releinaya zashchita transformatorov (Relay Protection of Electrical Converters), Moscow: Energoatomizdat, 1989.

  3. Novozhilov, A.N., Andreeva, O.A., Volikova, M.P., Gasparyan, A.G., and Novozhilov, T.A., Generation of the equation set for mathematical model of electrical machines and converters in operation conditions, Omsk. Nauchn. Vestn., 2006, no. 9 (46).

  4. Novozhilov, A.N., Kolesnikov, E.N., and Novozhilov, T.A., Simulation of currents in the windings of a three-phase three-winding transformer during inter-winding fault, Materialy XXII Mezhdunarodnoi nauchno-prakticheskoi konferentsii “Tekhnicheskie nauki: problemy i resheniya” (Proc. XXII Int. Sci.-Pract. Conf. “Technical Sciences: Problems and Solutions”), Moscow: Interkontakt, 2019, no. 4 (20).

  5. Ivanov-Smolenskii, A.V., Elektricheskie mashiny (Electrical Machines), Moscow: Energiya, 1980.

  6. Vishnevskii, A., Calculation of currents appearing in internal short circuits in converters, Izv. Vyssh. Uchebn. Zaved., Elektromekh., 1969, no. 5.

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Authors and Affiliations

  1. Toraighurov Pavlodar State University, Pavlodar, Kazakhstan

    A. N. Novozhilov & E. N. Kolesnikov

  2. Omsk State Technical University, Omsk, Russia

    T. A. Novozhilov

Authors
  1. A. N. Novozhilov
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  2. E. N. Kolesnikov
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  3. T. A. Novozhilov
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Corresponding author

Correspondence to A. N. Novozhilov.

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Translated by G. Dedkov

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Novozhilov, A.N., Kolesnikov, E.N. & Novozhilov, T.A. Coil Shorting Simulation in the Windings of a Triple-Phase Three-Winding Transformer. Russ. Electr. Engin. 91, 737–741 (2020). https://doi.org/10.3103/S1068371220120111

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  • DOI: https://doi.org/10.3103/S1068371220120111

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