JPEE  Vol.3 No.6 , June 2015
Hybrid Dissolved Gas-in-Oil Analysis Methods
Abstract: Dissolved gas analysis is the most widely used diagnostic test in power transformers. The aim of this paper is to introduce the dissolved gas analysis (DGA) methods able to diagnose the transformer conditions. The faults cause the transformer oil, pressboard, and other insulating materials to decompose and generate gases, some of which dissolve in the oil. The results of DGA must be accurate if faults are to be diagnosed reliably. There are different established methods used in industry for interpreting DGA results. We will compare the result of IEEE Key Gas Methods and Rogers’ Ratios. The transformer conditions are evaluated by the Key Gas Method with total combustible gas method (TCGM) and then verified by the Rogers’ Ratios. As result, the aging pattern and trend of the power transformer deterioration can be determined. The 30 sample data from IEEE with known faults and dissolved gas concentrations were used as the basis of comparison.
Cite this paper: Londo, L. , Bualoti, R. , Çelo, M. and Hobdari, N. (2015) Hybrid Dissolved Gas-in-Oil Analysis Methods. Journal of Power and Energy Engineering, 3, 10-19. doi: 10.4236/jpee.2015.36002.

[1]   Griffin, P.J. (1998) Criteria for the Interpretation of Data for Dissolved Gases in Oil from Transformers (A Review). Special Technical Publication 998, ASTM, Philadelphia, 89-107.

[2]   Suleiman, A.A., et al. (2012) Improving Accuracy of DGA Interpretation of Oil-Filled Power Transformers Needed for Effective Condition Monitoring. IEEE International Conference on Condition Monitoring and Diagnosis, Bali, 23-27 September 2012, 374-378.

[3]   Lewand, L.R. and Griffin, P.J. (2000) The Effective Use of Laboratory Analysis of Insulating Oil as a Maintenance Tool. Proceedings of the Sixty-Seventh Annual International Conference of Doble Clients, Watertown, 27-31 March 2000, Sec 5-8.

[4]   Pradhan, M.K. and Ramu, T.S. (2004) Criteria for Estimation of End of Life of Power and Station Transformers in Service, Electrical Insulation and Dielectric Phenomena, CEIDP. Annual Report Conference, Boulder, 17-20 October 2004, 220-223.

[5]   William H. Bartley, P.E. (2004) An Analysis of Transformer Failures. Part 2. Hartford Steam Boiler Inspection and Insurance Company.

[6]   Chen, Q.M. and Egan, D.M. (2006) A Bayesian Method for Transformer Life Estimation Using Perks’ Hazard Function. IEEE Transactions on Power Systems, 21, 1954-1965.

[7]   Ding, X.Q. and Cai, H. (2001) On-Line Transformer Winding’s Fault Monitoring and Condition Assessment. Proceedings of 2001 International Symposium on Electrical Insulating Materials (ISEIM 2001), Himeji, 19-22 November 2001, 801-804.

[8]   McGrail, T. and Wilson, A. (1997) On-Line Gas Sensors. IEE Colloquium on Condition Monitoring of Large Machines and Power Transformers, London, 19 June 1997, 1/1-1/4.

[9]   Sun, H.-C., Huang, Y.-C. and Huang, C.-M. (2012) A Review of Dissolved Gas Analysis in Power Transformers. Energy Procedia, 14, 1220-1225.

[10]   Stebbins, R.D., Kelly, J.J. and Myers, S.D. (1997) Power Transformer Fault Diagnosis. IEEE PES WM, Panel Session, New York, 6 February 1997, 463-468.

[11]   IEEE Standards C57.104-1991. IEEE Guide for the Interpretation of Gases Generated in Oil-Immersed Transformers, 1991.

[12]   IEC Standards 60599 (1999) Mineral Oil-Impregnated Electrical Equipment in Service—Guide to the Interpretation of Dissolved and Free Gases Analysis. Second Edition.

[13]   Franzén, A. and Karlsson, S. (2007) Failure Modes and Effects Analysis of Transformers. Technical Report TRITA-EE 2007:040, KTH School of Electrical Engineering.

[14]   Rogers, R.R. (1975) UK Experiences in the Interpretation of Incipient Faults in Power Transformers by Dissolved Gas-in-Oil Chromatography Analysis (A Progress Report). Minutes of Forty-Second International Conference of Doble Clients, Section 10-201

[15]   Rogers, R.R. (1978) IEEE and IEC Codes to Interpret Incipient Faults in Transformers, Using Gas in Oil Analysis. IEEE Transactions on Electrical Insulation, EI-13, 349-354.

[16]   IEEE Guide for the Interpretation of Gases Generated in Oil-Immersed Transformers—Redline. IEEE Std C57.104- 2008 (Revision of IEEE Std C57.104-1991)—Redline, pp. 1-45, 2009.

[17]   Abu-Siada, A. and Islam, S. (2012) A New Approach to Identify Power Transformer Criticality and Asset Management Decision Based on Dissolved Gas-in-Oil Analysis. IEEE Transactions on Dielectrics and Electrical Insulation, 19, 1007-1012.

[18]   Beykverdi, M., Faghihi, F. and Pour, A.M. (2014) A New Approach for Transformer Incipient Fault Diagnosis Based on Dissolved Gas Analysis (DGA). Nova Journal of Engineering and Applied Sciences, 3, 1-7.

[19]   Londo, L., Çelo, M. and Bualoti, R. (2015) Assessment of Transformer Condition Using the Improve Key Gas Methods. International Journal of Engineering Research & Technology (IJERT), 4, 48-55.