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Acta Chemica Iasi

The Journal of "Alexandru Ioan Cuza" University from Iasi

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2067-2446
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Comparative study on field collected samples of aged silicon rubber composite coatings for high voltage insulators

I.V. Tudose
  • Center of Materials Technology and Photonics School of Applied Technology, Technological Educational Institute of Crete, 71004 Heraklion, Greece
  • “Al.I.Cuza” University of Iasi, 11 Bulevard Carol I, Iasi, 700506, Romania 5Hellenic Electricity Distribution Network Operator S.A. (HEDNO),Greece
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ M. Suchea
  • Corresponding author
  • Center of Materials Technology and Photonics School of Applied Technology, Technological Educational Institute of Crete, 71004 Heraklion, Greece
  • Electrical Engineering Department, Technological Educational Institute of Crete, Greece
  • “Al.I.Cuza” University of Iasi, 11 Bulevard Carol I, Iasi, 700506, Romania 5Hellenic Electricity Distribution Network Operator S.A. (HEDNO),Greece
  • Email
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ K. Siderakis
  • Center of Energy and Photovoltaic Systems (CEPS), School of Applied Technology, Technological Educational Institute of Crete, 71004 Heraklion, Greece
  • Electrical Engineering Department, Technological Educational Institute of Crete, Greece
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ E. Thalassinakis / E. Koudoumas
  • Center of Materials Technology and Photonics School of Applied Technology, Technological Educational Institute of Crete, 71004 Heraklion, Greece
  • Electrical Engineering Department, Technological Educational Institute of Crete, Greece
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
Published Online: 2013-12-31 | DOI: https://doi.org/10.2478/achi-2013-0009

Abstract

: Pollution of high voltage (HV) insulators is a phenomenon with a considerable impact to the performance of transmission and distribution electrical networks. The use of composite materials and especially Silicone Rubber proved to be an efficient improvement, capable of suppressing the problem and diminishing the flashover probability. As a result ceramic insulators in transmission lines are replaced by insulators with composite housing, either HTV Silicone Rubber or LSR. In the case of HV substations however, the replacement of insulators is rather difficult, due to the complexity of the equipment and the corresponding financial cost. In this case the application of RTV Silicone Rubber is an equivalent alternative. The ceramic insulators are covered with a 0.5 mm RTV SIR coating which provides the advantages of composite insulators on a ceramic substrate. After installation the possible material lifetime, which is determined by the service conditions and the material formulation, is of primary concern. In Crete, a large scale application exists and coatings that exceed a service period of 10 years are still in operation. The present study focuses on the structural and morphological characterization of field collected composite insulators of various ages so that the degradation degree can be correlated with their service.

Keywords: HV insulators; RTV SIR coatings; aging; characterization

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About the article

Published Online: 2013-12-31

Published in Print: 2013-12-01


Citation Information: Acta Chemica Iasi, Volume 21, Issue 2, Pages 93–106, ISSN (Online) 2067-2446, DOI: https://doi.org/10.2478/achi-2013-0009.

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