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Resonance Overvoltages in Primary Winding of a Station Service Voltage Transformer

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Abstract

The design of new types of transformer equipment, in particular, station service voltage transformers (SSVTs), requires a detailed consideration of all technical aspects and conditions of their application and their design features. One problem is to provide their resistance to effects associated with their interaction with the grid. During transient events in the network caused by the operation of switching equipment or short circuits, the transformers are affected by the oscillating voltage, which, under certain conditions, can cause resonance overvoltages inside their windings. The design of SSVTs differs from that of common power transformers, mostly because different types of windings are used, which determines the essential difference in the natural oscillation frequencies and the theoretical possibility of the development of resonance overvoltages under changed combinations of network parameters and switching conditions. In this paper, the problems of estimating the natural and dominating oscillation frequencies in SSVT windings and the voltages on the longitudinal insulation of SSVT windings under the resonance conditions are considered. The proposed approach is applicable not only to SSVTs, but also to other types of transformer equipment.

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ACKNOWLEDGMENTS

We are grateful to staff of Ramenskoe Electrotechnical Plant Energy K.N. Kondarev for the development and manufacture of the experimental specimen and Yu.A. Maiorov for help and support in the organization and performance of the experiments.

This work was supported by the Ministry of Education and Science of the Russian Federation, agreement UID RFMEFI57717X0243.

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Authors and Affiliations

  1. All-Russian Electrotechnical Institute, 111250, Moscow, Russia

    V. S. Larin

  2. National Research University Moscow Power Engineering Institute, 111250, Moscow, Russia

    D. A. Matveev, A. V. Zhuikov & M. A. Kubatkin

  3. Ramenskoe Electrotechnical Plant Energy, 140105, Ramenskoe, Moscow oblast, Russia

    I. I. Nikulov

Authors
  1. V. S. Larin
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  2. D. A. Matveev
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  3. A. V. Zhuikov
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  4. M. A. Kubatkin
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  5. I. I. Nikulov
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Corresponding author

Correspondence to V. S. Larin.

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Translated by E. Petrova

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Larin, V.S., Matveev, D.A., Zhuikov, A.V. et al. Resonance Overvoltages in Primary Winding of a Station Service Voltage Transformer. Russ. Electr. Engin. 89, 490–495 (2018). https://doi.org/10.3103/S1068371218080072

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  • DOI: https://doi.org/10.3103/S1068371218080072

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