DOI: https://doi.org/10.15407/techned2017.01.052

THE ELECTROMAGNETIC VIBRATION DISTURBING FORCES IN TURBOGENERATOR WITH A GLANCE OF CURRENT ASYMMETRY OF STATOR WINDING

Authors
Yu.M. Vaskovskyi¹*, A.M. Melnyk²**
¹ – National Technical University of Ukraine « Kyiv Polytechnic Institute»,
pr. Peremohy, 37, Kyiv, 03056, Ukraine,
e-mail: Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript
² – Institute of Electrodynamics of the National Academy of Sciences of Ukraine,
Peremohy pr., 56, Kyiv, 03057, Ukraine,
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* ORCID ID : http://orcid.org/0000-0003-1262-0939
** ORCID ID : http://orcid.org/0000-0002-7492-3110

Abstract

Updated a mathematical model for calculating of electromagnetic vibration-disturbing forces of turbo-generator by the rotor eccentricity with the influence of the defect on the rotor currents of the stator winding. It is shown that in the simulation should take into account the eccentricity of the phase winding of current asymmetry hundred-torus. Determined that when a static array of eccentricity of the rotor surface induced eddy currents. Identify new diagnostic features eccentricity occurrence by analyzing the spectrum of vibration-disturbing forces harmonics of rotating frequency and multiples thereof. References 5, figures 5, table 1.

Key words: turbogenerator, circuit-field mathematical model, vibration-disturbing forces, eccentricity of rotor, diagnostic features.

Received:    29.09.2016
Accepted:    15.12.2016
Published:  19.01.2017

References

1. Vaskovskyi Yu.M., Melnyk A.M. The electromagnetic vibration disturbing forces of turbogenerator in maneuverable operating conditions. Tekhnichna Elektrodynamika.  2016.  No 2.  Pp. 35 – 41. (Ukr)
2. Vaskovskyi Yu.M., Melnyk A.M., Tytko O.I. Electromagnetic vibration disturbing forces at the eccentricity of rotor of turbogenerator. Electrical engineering &i Electromechanics. 2016.  No 4.  Pp. 16 – 21. (Ukr)
3. Haidenko Yu.A., Vishnevskyi T.S. Electromagnetic method of diagnostic of static eccentricity of synchronous generator. Hidroenerhetyka Ukrainy.  2011.  No 2.  Pp. 52–57. (Rus)
4. B.Ge, W.Guo, J.Guo, D.Zhang. Negative-sequence eddy current field calculation for the world’s first AP1000 nuclear half-speed generator. International Journal of Control and Automation.  2015.  Vol. 8.  No 6.  Pp. 177 – 186. DOI:  https://doi.org/10.14257/ijca.2015.8.6.18
5. M.Biet, A.Bijeire. Rotor faults diagnosis in synchronous generators using feature selection and nearest neighbors rule. Proc. IEEE Symposium on Diagnostics for Electrical Machines, Power Electronics and Drivers Conf.  2011.  Pp. 300 – 306. DOI:  https://doi.org/10.1109/DEMPED.2011.6063640

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