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- W2384259111 abstract "This paper describes an approach to identify torsional modal parameters using excitation-injection tests on turbine-generators,one of the key issues for mitigation of subsynchronous resonance.The identification process uses accurate detection of the modal frequencies based on controllable triggered torsional vibrations through the injection of modal signals into the excitation system.Then the torsional vibration amplitudes are caluculated using modal filtering and a modified discrete Fourier transform(DFT) algorithm with the modal damping identified using the least-squares method.After verification of the approach through digital simulations,the method was used to identify torsional vibration parameters in the four turbine-generators in the Shangdu Power Plant.The results demonstrate the advantages of this accurate,low cost approach using controllable modal excitation." @default.
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- W2384259111 date "2010-01-01" @default.
- W2384259111 modified "2023-09-26" @default.
- W2384259111 title "Identification of torsional modal parameters based on excitation-injection tests on turbine-generators" @default.
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