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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.49 [2011] >
IJPAP Vol.49(09) [September 2011] >
| Title: | Working model of optical fiber sensor for estimation of sludge in oil in electrical transformer |
| Authors: | Rao, T Venkateswara
Chakravarthy, V V S S S
Murthy, K Krishna |
| Keywords: | Oil sensor
Evanescent sensor
Sludge detector
Optical fiber sensor |
| Issue Date: | Sep-2011 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | A working model of
an optical fiber sensor for estimation of sludge in transformer oil is
presented based on evanescent field of absorption. The method proposed consists
of a multimode glass fiber of diameter 62.5/125 µm operated at 1100 nm
wavelength. The external jacket and cladding of the fiber are removed at different
points along the length of the fiber and along with the coils immersed in
transformer oil. The two ends of the fiber are taken out from the transformer;
one end of it is connected to a ANDO (1100 nm) power source while the other end
is connected to an optical power meter coupled with a relay and circuit
breaker. The method presented will be of great use for estimating the formation
of sludge in transformer surrounding the coils and thereby prevent its damage
due to formation of sludge. With little effort, the working of the system can
be made on-line and monitored from a central office. |
| Page(s): | 596-599 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.49(09) [September 2011]
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