Contribution of Gas Neutralization to the Potential Decay on Silicon Rubber Surfaces at Different Ambient Pressures
Paper in proceedings, 2014

Surface charging and charge decay on insulating polymers are inherent phenomena in HVDC insulation systems and knowledge about them is essential for proper insulation design, testing and co-ordination. In the present study, surface potential decay on silicone rubber samples is analyzed at different pressures of ambient air. For both polarities of pre-deposited surface charges, the intensity of gas neutralization and its contribution to the total charge/potential decay are examined by means of experimental measurements. The results of the study indicate that gas neutralization is efficient at high magnitudes of surface potentials and for materials with relatively low conductivity. Reduction of air pressure weakens the intensity of the background ionization in gas and leads to diminishing amount of free ions. Under these conditions, the contribution of gas neutralization to the total charge decay is reduced and the decay process is determined solely by properties of solid material (bulk and surface electric conductivities)

Author

Shahid Alam

Chalmers, Materials and Manufacturing Technology, High Voltage Engineering

Yuriy Serdyuk

Chalmers, Materials and Manufacturing Technology, High Voltage Engineering

Stanislaw Gubanski

Chalmers, Materials and Manufacturing Technology, High Voltage Engineering

ICHVE 2014 - 2014 International Conference on High Voltage Engineering and Application, Poznan, Poland, 8-11 September 2014

1-4, paper B-2-4-

Driving Forces

Sustainable development

Areas of Advance

Energy

Materials Science

Subject Categories

Other Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/ICHVE.2014.7035427

ISBN

978-1-4799-6613-4

More information

Created

10/7/2017