S.S. Bamji
National Research Council
108 Papers
1.1K Citations
S.S. Bamji is an academic researcher from National Research Council. The author has contributed to research in topics: Space charge & Electrical treeing. The author has an hindex of 20, co-authored 108 publications.
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Papers
Degradation of polymeric insulation due to photoemission caused by high electric fields
TL;DR: In this paper, the mechanism of electrical tree initiation in polyethylene subjected at AC, DC, and half-rectified AC voltages was studied by an optical technique which is at least two orders of magnitude more sensitive than partial discharge detection.
120
Oxidation and Water Tree Formation in Service-Aged XLPE Cable Insulation
TL;DR: In this paper, the authors examined the insulation from six 5 kV power cables, which has been in service underground for 6 to 8 years, by infrared (IR) spectroscopy and oxidation induction time (OIT) analysis.
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Electric field calculations with the boundary element method
TL;DR: In this article, the boundary element method is used to calculate the electric field profiles at needle tips commonly used for electrical treeing tests, and field distributions are also obtained for polyethylene containing a space charge, at the needle tip, and compared with the values previously obtained by the finite difference method.
62
Polymer oxidation and water treeing
TL;DR: In this paper, micro-IR spectroscopy analysis has shown that tree growth rate is slower in nitrogen than in air, the actual difference being affected by the type of ionic solution used.
51
Space charge development and breakdown in XLPE under DC field
TL;DR: In this paper, the authors investigated the correlation between space charge accumulation and insulation failure in polyethylene-based materials subjected to a DC field of 50 kV/mm and found that a consistent surge in the amount of accumulated space charge shortly before insulation breakdown was observed in practically all samples.
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