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Silicone rubber (SiR) has been an important material in cable accessories which are connected to the superconducting power system. Electrical tree is a serious electrical aging to SiR insulation and it will cause breakdown when reaches the ground. Addition of nanoparticles into SiR will improve the insulating properties compared with undoped material. However, the effect of temperature below 0 °C...
This paper presents the study of the relationship between magnetic field (MF) and growth mechanism of electrical tree in silicone rubber (SiR) under low temperature. Needle-plate electrode was employed in this paper to generate electrical tree, and silver needle was employed to avoid stress generated by the MF. Samples were applied pulse voltage of +12 kV. 0 and 400 mT magnetic field density was applied,...
Silicone rubber (SiR) has been an important material widely used in the cable accessories in cross-linked polyethylene (XLPE) cables. The electrical tree is a serious threat to SiR insulation and it will cause breakdown when reaches the ground. The high carrying capacity of superconducting cable makes the magnetic flux density up to hundreds of mT around the conductor. However, the effect of high...
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