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Improved Model of Thermal Rotor Protection Including Negative Sequence Protection

Author

Listed:
  • Davorin Burgund

    (Elektrogen d.o.o., 10000 Zagreb, Croatia)

  • Srete Nikolovski

    (Power Engineering Department, Faculty of Electrical Engineering, Computer Science and Information Technology, University of Osijek, 31000 Osijek, Croatia)

Abstract

The paper presents a new model of the thermal rotor protection 49R on synchronous generators with self-excitation with the influence of generator negative sequence protection 46I2. The purpose of the analysis is to solve the problem of simultaneous occurrence of rotor overload due to excitation current and rotor overload due to the inverse component of the stator current. The numerical protections are designed to operate independently of each other, and therefore the residual thermal capacity of the copper windings is not defined with higher precision. A mathematical model that integrates these two protections is given and described.

Suggested Citation

  • Davorin Burgund & Srete Nikolovski, 2022. "Improved Model of Thermal Rotor Protection Including Negative Sequence Protection," Energies, MDPI, vol. 15(7), pages 1-15, March.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:7:p:2391-:d:778893
    as

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