Abstract
Purpose In this paper, an electromechanical approach to study the turbine–generator shaft stability with and without dampers is made. The shaft is subjected to electrical disturbances created by series capacitors. The high power capacitors help the electric power system to improve the reactive power in high voltage transmission lines. Methods Finite element method is used to study the stability of the shaft under subsynchronous resonance when compared to the traditional methods like eigenvalue analysis, frequency scanning method and digital time simulation techniques. At the same time, it leads to subsynchronous resonance. Results Electromechanical stress in the rotating shaft arises when the resonance is created in the system. Maximum stress and strain of the shaft are calculated with other necessary parameters to prove the system instability. In order to maintain stability, dampers are installed at an optimum location. Conclusion Best location of installing damper is found using ANSYS 16.0 by modal analysis, harmonic and phase response analysis. The damper installed at the point reduces the stress caused by subsynchronous resonance and maintains the stability of the system.
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Acknowledgements
The authors are grateful to Department of Electrical and Electronics Engineering & Department of Mechanical engineering, School of engineering and technology, CHRIST (Deemed to be) University for providing the laboratory facilities. The authors acknowledge Department of Electrical and Electronics Engineering, Ghousia College of engineering Ramanagaram (Affiliated to Visvesvaraya Technological University), Karnataka, India.
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Manikandan, P., Khan, F.A. (2021). Rotor Dynamics of Turbine–Generator Shaft with Dampers During Subsynchronous Resonance Generated by Series Capacitors. In: Rao, J.S., Arun Kumar, V., Jana, S. (eds) Proceedings of the 6th National Symposium on Rotor Dynamics. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-15-5701-9_16
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DOI: https://doi.org/10.1007/978-981-15-5701-9_16
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