DIAGNOSIS OF OLTC USING DGA AND STATIC WINDING RESISTANCE TEST
On Load Tap Changer (OLTC) failure occurs is due to the insulation degradation and contacts failure inside it. Other than that, contacts wear influences the OLTC performances. The worn contacts will cause hotspots in the OLTC tank and cause the insulating oil to degrade faster. As a result, thi...
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my.utem.eprints.67562015-05-28T03:44:53Z http://eprints.utem.edu.my/id/eprint/6756/ DIAGNOSIS OF OLTC USING DGA AND STATIC WINDING RESISTANCE TEST Ahmad Khiar, Mohd Shahril Md Thayoob, Yasmin Hanum Yang Ghazali, Young Zaidey Ab Ghani, Sharin Sutan Chairul, Imran TK Electrical engineering. Electronics Nuclear engineering On Load Tap Changer (OLTC) failure occurs is due to the insulation degradation and contacts failure inside it. Other than that, contacts wear influences the OLTC performances. The worn contacts will cause hotspots in the OLTC tank and cause the insulating oil to degrade faster. As a result, this will lead to the damage of complete transformer unit. Thus, the research work that has been carried out applied the Dissolved Gas Analysis (DGA) via latest Duval Triangle method during the diagnosis of OLTC rated at 33/11kV, 30MVA at the first stage to provide early indication of OLTC�s breakdown. The Static Winding Resistance Test is then applied at the second stage to figure out any increase of contact resistances for all phases. In addition, it is expected to have a relationship between both results. The results showed that it was proven that by performing DGA via latest Duval Triangle method, the early indication of OLTC�s breakdown can be obtained. Besides, this paper revealed that the Static Winding Resistance Test was capable to provide any sign of bad contacts in fixed condition as well as looses connections. 2012-04-04 Conference or Workshop Item PeerReviewed application/pdf en http://eprints.utem.edu.my/id/eprint/6756/1/ICEI_2012_Mohd_Shahril.pdf Ahmad Khiar, Mohd Shahril and Md Thayoob, Yasmin Hanum and Yang Ghazali, Young Zaidey and Ab Ghani, Sharin and Sutan Chairul, Imran (2012) DIAGNOSIS OF OLTC USING DGA AND STATIC WINDING RESISTANCE TEST. In: 3rd International Conference on Engineering and ICT (ICEI2012) , 4 – 5 April 2012, Melaka, Malaysia . |
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TK Electrical engineering. Electronics Nuclear engineering Ahmad Khiar, Mohd Shahril Md Thayoob, Yasmin Hanum Yang Ghazali, Young Zaidey Ab Ghani, Sharin Sutan Chairul, Imran DIAGNOSIS OF OLTC USING DGA AND STATIC WINDING RESISTANCE TEST |
description |
On Load Tap Changer (OLTC) failure occurs is
due to the insulation degradation and contacts failure inside
it. Other than that, contacts wear influences the OLTC
performances. The worn contacts will cause hotspots in the
OLTC tank and cause the insulating oil to degrade faster.
As a result, this will lead to the damage of complete
transformer unit. Thus, the research work that has been
carried out applied the Dissolved Gas Analysis (DGA) via
latest Duval Triangle method during the diagnosis of OLTC
rated at 33/11kV, 30MVA at the first stage to provide early
indication of OLTC�s breakdown. The Static Winding
Resistance Test is then applied at the second stage to figure
out any increase of contact resistances for all phases. In
addition, it is expected to have a relationship between both
results. The results showed that it was proven that by
performing DGA via latest Duval Triangle method, the
early indication of OLTC�s breakdown can be obtained.
Besides, this paper revealed that the Static Winding
Resistance Test was capable to provide any sign of bad
contacts in fixed condition as well as looses connections. |
format |
Conference or Workshop Item |
author |
Ahmad Khiar, Mohd Shahril Md Thayoob, Yasmin Hanum Yang Ghazali, Young Zaidey Ab Ghani, Sharin Sutan Chairul, Imran |
author_facet |
Ahmad Khiar, Mohd Shahril Md Thayoob, Yasmin Hanum Yang Ghazali, Young Zaidey Ab Ghani, Sharin Sutan Chairul, Imran |
author_sort |
Ahmad Khiar, Mohd Shahril |
title |
DIAGNOSIS OF OLTC USING DGA AND STATIC WINDING RESISTANCE
TEST |
title_short |
DIAGNOSIS OF OLTC USING DGA AND STATIC WINDING RESISTANCE
TEST |
title_full |
DIAGNOSIS OF OLTC USING DGA AND STATIC WINDING RESISTANCE
TEST |
title_fullStr |
DIAGNOSIS OF OLTC USING DGA AND STATIC WINDING RESISTANCE
TEST |
title_full_unstemmed |
DIAGNOSIS OF OLTC USING DGA AND STATIC WINDING RESISTANCE
TEST |
title_sort |
diagnosis of oltc using dga and static winding resistance
test |
publishDate |
2012 |
url |
http://eprints.utem.edu.my/id/eprint/6756/1/ICEI_2012_Mohd_Shahril.pdf http://eprints.utem.edu.my/id/eprint/6756/ |
_version_ |
1665905326333886464 |
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13.160551 |