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.

V. Jayashankar

Building materials

Carbon carbon composites

Insulating materials

Signal analysis

signal processing

BENCH MARKS

POLYETHYLENE COMPOSITES

Solid insulations

VOLTAGE TRANSFORMERS

Insulation

IIT Madras is a public technical and research university located in Chennai, Tamil Nadu. Founded in 1959, it is recognised as an Institute of National Importance.

IIT Madras has been ranked as the top engineering institute in India for four years in a row by the National Institutional Ranking Framework of the MHRD

It currently offers undergraduate, postgraduate and research degrees across 16 disciplines in Engineering, Sciences, Humanities and Management. About 596 faculty belonging to science and engineering departments and centres of the Institute are engaged in teaching, research and industrial consultancy.

IIT Madras

Carbon-polyethelene composites as bench marks for breakdown studies in windings

Proceedings of the International Symposium on Electrical Insulating Materials

Changes in resonant frequencies of a winding can identify the location of breakdown during impulse tests. This is difficult with a uniform winding. We propose the use of concurrent UHF antenna and winding currents in order to locate breakdown. The work can be extended to identify partial discharge events in dry type transformers.

Location of breakdown in windings using concurrent UHF antenna and current responses

Journal	Proceedings of the International Symposium on Electrical Insulating Materials
Open Access	No