DOI: https://doi.org/10.15407/publishing2017.47.037

PARAMETER IDENTIFICATION METHOD OF THE TURBINE-GENERATOR SHAFT ELASTIC MODEL FOR TORSIONAL VIBRATIONS SIMULATION

Yu.V. Kuievda, S.M. Baluta
National University of Food Technologies,
Volodymyrska St., 68, Kyiv, 01601, Ukraine,
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The mathematical models of different dimensions with a finite number of degrees of freedom of a powerful turbine-generator shaft, which is used to calculate the torsional vibrations of the shaft train, were compared. The computational studies of transients during switching of the turbine-generator to parallel operation with the electrical system with no-load conditions using different mathematical models of the shaft train and comparison of torsional moments were performed. The method of parameter identification for the multi-mass model of the shaft line of the turbine set using an iterative conjugate gradient method and a heuristic genetic algorithm was developed. The performed computational studies have shown efficiency of the developed technique. References 12, figures 6.
Key words: turbine-generator, shaft, multiple-mass model, parameter identification, genetic algorithm, conjugate gradient method.

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