Temperature and Field Induced Variations of Electric Conductivities of HTV Silicone Rubbers Derived from Measured Currents and Surface Potential Decay Characteristics
Artikel i vetenskaplig tidskrift, 2020

The temperature and field dependencies of electric conductivities of two types of silicone rubber-based polymers intended for use in high voltage direct current applications are presented and discussed. The conductivities obtained with the standard method by measuring a current through the material sample placed between metallic electrodes in response to the applied voltage are compared with those deduced from the measured potential decay on pre-charged material surface in an open circuit configuration. The measurements were conducted in the range of the applied electric field strength (0.5–5) kV/mm and temperatures ranging from 22 °C to 70 °C. It is shown that the values of the conductivities obtained by the two methods are in agreement and their temperature dependences obey Arrhenius law yielding similar activation energies.

electric conductivity

silicone rubber

surface potential decay

activation energy

charging current

Författare

Shahid Alam

Chalmers, Elektroteknik, Högspänningsteknik

Yuriy Serdyuk

Chalmers, Elektroteknik, Elkraftteknik, Elnät och komponenter

Stanislaw Gubanski

Chalmers, Elektroteknik, Elkraftteknik, Elnät och komponenter

Energies

1996-1073 (ISSN)

Vol. 13 2982-2992

Styrkeområden

Energi

Ämneskategorier

Annan elektroteknik och elektronik

DOI

10.3390/en13112982

Mer information

Skapat

2020-06-10