Proceedings ArticleDOI
Carbon-polyethelene composites as bench marks for breakdown studies in windings
M.K. Ilampoornan,V. Rajitha,V. Jayashankar +2 more
- pp 467-470
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TLDR
In this paper, a consistent laboratory reproduction of waveforms during impulse tests with solid insulation materials has been a difficult task, and carbon polyethylene composites can serve as benchmarks for such studies.Abstract:
A consistent laboratory reproduction of waveforms during impulse tests with solid insulation materials has been a difficult task. Carbon polyethylene composites can serve as benchmarks for such studies. Experimental results on films and a practical voltage transformer (VT) are shown that can help develop signal analysis tools.read more
Citations
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Proceedings ArticleDOI
Location of breakdown in windings using concurrent UHF antenna and current responses
TL;DR: In this paper, the use of concurrent UHF antenna and winding currents was proposed to locate breakdown in dry-type transformers, and the work can be extended to identify partial discharge events in dry type transformers.
References
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Journal ArticleDOI
Impulse testing of power transformers - a model reference approach
TL;DR: In this article, an objective classification of faults that can occur during impulse tests on power transformers is proposed, including nonlinear elements, breakdown, and partial discharge events, and an analysis of a layer winding, in the time and frequency domains, with these faults shows that current assessment methods must be used with caution.
Journal ArticleDOI
Virtual Instrument for Lightning Impulse Tests
A. Palani,V. Jayashankar +1 more
TL;DR: In this paper, an objective formulation of the impulse analysis problem from a signal analysis viewpoint is proposed, where the winding response is quintessentially that of a deterministic network to a finite energy signal, with breakdown and partial discharge being inherently nonlinear events.
Journal ArticleDOI
Simulation of faults during impulse tests
TL;DR: In this article, experimental results on fault simulations during impulse tests across windings and other specifically designed networks are reported, both breakdown and partial discharge studies are conducted with digital acquisition of fault records.
Proceedings ArticleDOI
Dielectric breakdown of polyethylene-carbon black composites
TL;DR: In this paper, the dielectric breakdown strength of carbon black-polyethylene composites based on the percolation phenomena of the composites has been investigated in depth.