Water content analysis effect on dielectric breakdown voltage in 500 kv transformer oil using coefficient correlation method

Auliq, Muhammad Aan (2019) Water content analysis effect on dielectric breakdown voltage in 500 kv transformer oil using coefficient correlation method. IOP Conference.

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Abstract

Transformer is a vital component in distributing electrical power. The use of transformer
oil which is continuously for a long time and not monitored can cause fatal damage to the
transformer. This condition triggered by high water content in the transformer oil which causes
breakdown voltage failure and electrical short circuit on the transformer. Therefore this study aims
to analyze the influence of water content and breakdown voltage on 500 kV transformer oil type
Kunlun Ki25x using the coefficient correlation method. The coefficient correlation method is
statistical analysis technique used to look for relationships between variables that are quantitative.
Two variables are said to be correlated if the changes in one variable will be followed by changes
in the other variables regularly in the same direction (positive correlation) or opposite direction
(negative correlation). For material testing and analysis data researcher using Megger OTS100AF
instrument. This experiment conduct in paiton 9 power plant East Java for 36 month. Based on
experimental data result researcher obtained a strong negative correlation value on the relationship
of water content and breakdown voltage with the coefficient R = -0.88 on the function y = 0.7692x
+ 85.733 and it has characteristic that the increase in water content (x) is inversely proportional to
increase the dielectric breakdown voltage (y). In addition, it is also known that the increase in
transformer oil temperature is directly proportional to the increase in water content with a positive
correlation of R = 0.92 at the function y = 0.4208x + 50.155. From the results above, it can be
concluded that the parameters of water content and temperature have an impact on the value of the
breakdown voltage and the performance of the transformer

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Item Type:	Peer Review
Subjects:	600 Technology and Applied Science
Divisions:	Faculty of Engineering > Department of Electrical Engineering (S1)
Depositing User:	Novan Agung | novanagung8@unmuhjember.ac.id
Date Deposited:	06 Nov 2020 01:22
Last Modified:	19 Apr 2021 03:24
URI:	http://repository.unmuhjember.ac.id/id/eprint/6901

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