Changes of Insulation Properties of Photovoltaic Cables Caused by Ageing Treatment

Authors

  • Juraj Packa Slovak University of Technology Ilkovičova 3 Bratislava
  • Vladimir Kujan Slovak University of Technology Ilkovičova 3 Bratislava
  • Daniel Štrkula Slovak University of Technology Ilkovičova 3 Bratislava
  • Vladimír Šály Slovak University of Technology Ilkovičova 3 Bratislava
  • Milan Perný Slovak University of Technology Ilkovičova 3 Bratislava

DOI:

https://doi.org/10.14311/TEE.2017.1.006

Abstract

An important part of the photovoltaic power plants are cable systems. The dielectric properties of cables, reliability and durability depend on quality of production processes, operating conditions and degradation factors, as well. Expected lifetime of cable systems is more than 20-30 years in general. Their failure free operation and long-term stability of properties has a direct impact on the economic return of the investments. According to our experiences the tests in compliance with valid standards are not adequate to verify real life time during operation. Photovoltaic cables intended for use in outdoor applications for the connection between the solar panels and possible connection between panels and inverter were chosen for our experiments. The changes of insulation resistance and breakdown voltage caused by some degradation factors, mainly water, are presented. This research was inspired by real failure in operation.

Author Biographies

Juraj Packa, Slovak University of Technology Ilkovičova 3 Bratislava

Faculty of Electrical Engineering and Information Technology,

Institute of Power and Applied Electrical Engineering

Vladimir Kujan, Slovak University of Technology Ilkovičova 3 Bratislava

Faculty of Electrical Engineering and Information Technology,

Institute of Power and Applied Electrical Engineering

Daniel Štrkula, Slovak University of Technology Ilkovičova 3 Bratislava

Faculty of Electrical Engineering and Information Technology,

Institute of Power and Applied Electrical Engineering

Vladimír Šály, Slovak University of Technology Ilkovičova 3 Bratislava

Faculty of Electrical Engineering and Information Technology,

Institute of Power and Applied Electrical Engineering

Milan Perný, Slovak University of Technology Ilkovičova 3 Bratislava

Faculty of Electrical Engineering and Information Technology,

Institute of Power and Applied Electrical Engineering

References

J. Densley: Ageing mechanisms and diagnostics for power cables – An Overview. In: IEEE Electrical Insulation Magazine, Vol. 17, No. 1, 2001, pp. 14 – 21.

J. Packa, V.Kujan, D. Štrkula, V.Šály, M.Váry: The influence of selected degradation factors on the dielectric properties of cables for photovoltaic applications, Renewable Energy Sources 2016, Tatranské Matliare, Slovakia, May 31 - June 2, 2016, pp. 110-113

J. Packa, V. Šály: The Influence of water and humidity on the cable insulation electric characteristics for photovoltaic applications, Renewable Energy Sources 2013, Tatranské Matliare, Slovakia, May 21 23, 2013, pp. 443-446

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Published

2020-03-30

Issue

Vol. 6 No. 1 (2017)

Section

Articles