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International Journal of Scientific and Engineering Research
ISSN Online 2229-5518
ISSN Print: 2229-5518 7    
Website: http://www.ijser.org
scirp IJSER >> Volume 3,Issue 7,July 2012
Predication of Life of Transformer insulation by developing Relationship between Degree of Polymerization and 2- Furfura
Full Text(PDF, )  PP.294-298  
Author(s)
Dipak Mehta, Prof. Hitesh Jariwala
KEYWORDS
— Insulation, Farun, Degree of polymerization, DGA, paper Insulation, ageing, transformer, electrical
ABSTRACT
Degradation of cellulosic materials can be identified by measuring dissolved carbon oxide gas content in oil, Degree Polymerization (DP) of paper and 2-Furfurol content in oil. Each method has some advantages and limitations. In case of dissolved carbon oxide gas analysis and furan content determination, sampling is easy but interpretation of result is not very reliable. On the other hand DP measurement of paper is reliable and accurate but it is not practical top draw paper sample from transformer in service. Therefore, attempts are being made to establish a reliable and good correlation among above parameters to get a simple and accurate result. This paper presents relation between DP and furan content. For given oil sample furan content first measured and using above relation DP value can be easily identified. Also this relationship is verified by with results of five no's field failed transformers.
References
[1] Condition Monitoring of Power transformer by analyzing Dissolved Gas analysis and Oil contamination test by Mr. Dipak Mehta Essar Oil Limited and Prof.H.R.jariwala SVNIT Surat- Journal of Information Knowledge and Research in Electrical EngineeringISSN-0975-6736 Volume-2 Issue-1.

[2] IS 335-1993, New Insulating Oil.

[3] IS 9335 ‘Cellulosic papers for electrical purposes: Specification for individual materials, general purposes electrical paper’.

[4] Assessing Remnant Life of Transformer Based on Furan Content in Transformer Oil and Degree of Polymerization of by Solid insulation Sanjay.G.Patki, Jaspal S. Wadhwa -Fifteenth National Power Systems Conference (NPSC) and IIT Bombay December- 2008.

[5] Introduction to the Half-Century Transformer by the Transformer Maintenance Institute, S.D. Myers Co., 2002.

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