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The National Academy of Sciences of Ukraine

The Institute of Electrodynamics

About Institute



Kensytskyi O.H.
Institute of Electrodynamics of the National Academy of Sciences of Ukraine,
Peremohy, 56, Kyiv-57, 03680, Ukraine,
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The analysis of generating equipment reliability of electric power plants of Ukraine is made. Indices of reliability and the main most damaged elements and parts of hydro- and turbogenerators, also possible condition and constructive factors of damages beginnings are determined. With help methods of systems analysis, mathematical and physical simulation, also natural experiment are made researches of electromagnetic, heat and thermomechanical processes features in equipment at beginnings of various physical character defects. Researchers are made for wide diapason of working modes at the different design of separate elements and parts. The maximum heating take place in an end packet under-slot zone under the conditions of reactive power consumption is proved. As a result of experimental investigations is determined, the load level and hydrogen temperature at the end of gas-coolers have an influence on a vibration state both machines in general and its separate parts. Vibration have maximum at the active load less nominal value, especially under the conditions of reactive power consumption, and low temperature of refrigerant. The comparative analysis of vibration force in stator turbogenerator with 1000 MW power in two-polar and four-polar implementation is made. It is determined while crossing to conditions of reactive power consumption in a spectrum of vibration exciting force in a stator two-polar turbogenerator there is increase of double frequency component of electromagnetic oscillation (200 Hz). Comparison of effectiveness the design of stator core end zone of a turbogenerator is made. The expediency and efficiency of use the electromagnetic internal distributed tooth-slot design shields are proved. The technical solutions of optimization the design of elements and parts turbo- and hydrogenerators – the schemes of end zone cooling and the system of stator core pressing, devices of frontal part fastening, also ventilation of slits in stator core teeth in accordance with results of researches are developed and scientific substantiation. References 7, figures 12.
Key words: turbogenerator, hydrogenerator, reliability, unfailing, running to failure, models, physical processes.

1. Kensytskyi O.H., Fedorenko G.M. Reliability of the generating equipment and prospect of development of nuclear power in Ukraine. Problems of nuclear power plants’ safety and of Chernobyl. Scientific and technical collection. 2016. No 26. Pp. 69 – 74. (Ukr)
2. Kensytskyi O.H., Hvalin D.I., Kobzar K.O. The mathematical model of coupling calculation the electromagnetic field and heats of the end zone powerful turbogenerator. ENERGETIKA. Proceedings of CIS higher education institutions and power engineering associations. 2019. No 62 (1). Pp. 37 – 46. (Rus) DOI:
3. Kensytskyi O.H., Hvalin D.I. The end zone turbo generator electromagnetic field for changes the reactive load. Tekhnichna elektrodynamika. 2018. No 1. Pp. 62 – 68. (Ukr) DOI:
4. Kensytskyi O.H., Kramarskyi V.A., Kobzar K.O., Hvalin D.I. Heating of stator end zone of turbogenerator at different variants it structural implementation. East European Scientific Journal. 2018. 9 (37), part 1. Pp. 46 – 52. (Ukr) DOI:
5. Kuchynskyi K.A. Effect on circulation disorders distillate on thermomechanical stresses in isolation of the stator winding of the turbogenerator by power 800 MW. Tekhnichna elektrodynamika. 2014. No 1. Pp. 75 – 80. (Rus)
6. Kychynskyi K.A. The thermostressed state of isolation of the winding of the stator of the turbogenerator at various alternatives of its fastening in the end face of the core. Pratsi Instytutu Elektrodynamiky Natsionalnoi Akademii Nauk Ukrainy. 2016. No 43. Pp. 65 – 70. (Rus)
7. Vaskovskyi Yu.M., Melnyk A.M. Electromagnetic vibration disturbing forces of powerful two- and four-pole turbogenerators of nuclear power plants of Ukraine. Tekhnichna elektrodynamika. 2019. No 3. Pp. 60 – 66. (Ukr) DOI:

Received 17.05.2019