Incipient fault diagnosis of power transformers using optical spectro-photometric technique

Hussain K.; Subrata Karmakar

doi:10.1117/12.2181780

15 June 2015 Incipient fault diagnosis of power transformers using optical spectro-photometric technique

Hussain K., Subrata Karmakar

Proceedings Volume 9654, International Conference on Optics and Photonics 2015; 96540R (2015) https://doi.org/10.1117/12.2181780
Event: International Conference on Optics and Photonics 2015, 2015, Kolkata, India

Abstract

Power transformers are the vital equipment in the network of power generation, transmission and distribution. Mineral oil in oil-filled transformers plays very important role as far as electrical insulation for the winding and cooling of the transformer is concerned. As transformers are always under the influence of electrical and thermal stresses, incipient faults like partial discharge, sparking and arcing take place. As a result, mineral oil deteriorates there by premature failure of the transformer occurs causing huge losses in terms of revenue and assets. Therefore, the transformer health condition has to be monitored continuously. The Dissolved Gas Analysis (DGA) is being extensively used for this purpose, but it has some drawbacks like it needs carrier gas, regular instrument calibration, etc. To overcome these drawbacks, Ultraviolet (UV) -Visible and Fourier Transform Infrared (FTIR) Spectro-photometric techniques are used as diagnostic tools for investigating the degraded transformer oil affected by electrical, mechanical and thermal stresses. The technique has several advantages over the conventional DGA technique.

Citation Download Citation

Hussain K. and Subrata Karmakar "Incipient fault diagnosis of power transformers using optical spectro-photometric technique", Proc. SPIE 9654, International Conference on Optics and Photonics 2015, 96540R (15 June 2015); https://doi.org/10.1117/12.2181780

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