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DOI: https://doi.org/10.15407/techned2016.05.073

THE SWITCHING IN VOLTAGE TRANSFORMER

Journal Tekhnichna elektrodynamika
Publisher Institute of Electrodynamics National Academy of Science of Ukraine
ISSN 1607-7970 (print), 2218-1903 (online)
Issue № 5, 2016 (September/Oktober)
Pages 73 – 75

 

Authors
Yu.I.Tugay1, O.I.Ganus2, K.О.Starkov2
1 – Institute of Electrodynamics National Academy of Science of Ukraine,
pr. Peremohy, 56, Kyiv-57, 03680, Ukraine,
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2 – JSC "Kharkivoblenerho",
str. Plekhanov, 149, Kharkiv, 61037, Ukraine,
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Abstract

Instrument transformers are sources of information required for mode control systems, power distribution networks, including advanced Smart Grid. Therefore, to ensure reliable operation of this source is relevant theoretical and practical task. The aim of this study is to develop a mathematical model of nonlinear dynamic analysis of electromagnetic transients in transformers and voltage rating switching surges in the distribution networks. It differs from previous studies in which the cause of failure of the voltage transformer ferroresonance considered quasi-stationary processes. The analyses of the equations are describing the electromagnetic transients in voltage transformer equivalent circuit. Using the resulting model makes it possible to anticipate the occurrence of surge and choose the measures their prevention. References 6, figure 1.

 

Key words: distribution network, voltage transformer, overvoltage.

 

Received:    03.02.2016
Accepted:    27.07.2016
Published:  13.09.2016

 

References

1. Bessonov L.A. Transients in nonlinear electrical circuits with steel.  Moskva-Leningrad: Gosenergoizdat, 1951.  163 p. (Rus)
2. Hanus A.I., Starkov K.A. The mathematical model of the nonlinear inductance of the transformer voltage as a factor influen-cing the occurrence of ferroresonance processes. Visnyk KhNTUSH. Tekhnichni nauky.  2014.  Vol. 153.  P. 11–14. (Ukr)
3. Zhurakhivskyi A.V., Kens Yu.A., Yatseiko A.Ya., Masliak R.Ya. Protection of electrical networks 6-35 kV from ferroresonance processes. Tekhnichna Elektrodynamika.  2013.  No 5.  P. 70–76. (Ukr)
4. Nazarov V.V. About voltage transformers and insulation monitoring devices in networks of 6-35 kV. Enerhetyka i Elektryfikatsiia.  2000.  No 4.  P. 27–29. (Rus)
5. Ferraci P. Ferroresonance. Group Schneider. 1998.  No 190.  28 р.
6. Tugai Yu., Tugai I. A combined method for study of ferroresonance processes in voltage transformer.  2014 IEEE Int.Conf.on Intelligent Energy and Power Systems (IEPS – 2014): Proc. of the Int. Conf.  Pp. 71–73.

 

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