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Proceedings Paper

Optical sensor for monitoring of high voltage electric transformers
Author(s): Rahmat A. Shoureshi; Virdi Permana
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Paper Abstract

Abstract-Transformers are a vital part of transmission and distribution systems. Monitoring the transformers for problems before they occur can prevent faults that are costly to fix and result in a loss of service. Current systems can provide information about the state of a transformer, but are very expensive to implement. This paper outlines a new approach that is based using light absorbance to monitor the transformer oil. Oil is continually sampled from the transformer, and light is passed through the oil and tested for absorbance. Preliminary experiments demonstrated that a system based on one wavelength could determine the difference between an acceptable or unacceptable sample of oil. Samples of transformer oil were failed in controlled failure modes, which showed a general increase in absorbance during the experiment. Additional wavelengths can be measured, which provides more information about the state of the transformer and makes the system more versatile in determining fault types. All the equipment necessary for the prototype system is outlined, as well as a method for analyzing the data that the prototype can provide.

Paper Details

Date Published: 15 September 2005
PDF: 7 pages
Proc. SPIE 5907, Photonic Devices and Algorithms for Computing VII, 590704 (15 September 2005); doi: 10.1117/12.624106
Show Author Affiliations
Rahmat A. Shoureshi, Univ. of Denver (United States)
Virdi Permana, Univ. of Denver (United States)

Published in SPIE Proceedings Vol. 5907:
Photonic Devices and Algorithms for Computing VII
Khan M. Iftekharuddin; Abdul A. S. Awwal, Editor(s)

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