A Hybrid Diagnosis Approach on Transformer’s Insulating Oil

Ming-Jong Lin

Department of Electronic Engineering, Southern Taiwan University of Science and Technology, Tainan City, Taiwan.

DOI: 10.4236/eng.2015.74016                

Abstract

The immersed-oil power transformer is so vital equipment in power system that maintenance-engineers take more monitor from transformer’s insulating oil to diagnose what is condition of operation. Then the dissolved gas analysis (DGA) is known for an effective technique on detecting incipient faults in oil-immersed power transformers. In this paper, a practical method is presented which consists of the Roger & Dernenber Ratio Methods, the Linear SVM diagnosis, the Key Gas method and the Specification ANSI/IEEE C57.104 Standard. Thus, incipient faults in power immersed-oil transformers can be directly identified by a report’s form which is so easy understood that we can accurate of diagnosis transformer. The user only keys in the measured data of main gases such as H₂, CH₄, C₂H₂, C₂H₄, C₂H₆, and CO those gases were must decompose via ASTM-D3612. The diagnosis result was showed in texts. This paper was taken some data from Taiwan and Siemens Power Company to verify the program that was validation and accuracy of the transformer’s insulating oil diagnosis tool.

Keywords

Power Transformer Diagnosis, Dissolved Gas Analysis, Total Combustible Gases, ANSI/IEEE C57.104 Standard

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	IEEE (2012) C57.104—IEEE Guide for the Interpretation of Gases Generated in Oil—Immersed Transformers. Minutes of WG Meeting Nashville, Tennessee.
[2]	Mollman, A. and Pahlavanpour, B. (1999) New Guidelines for Interpretation of Dissolved Gas Analysis in Oil-Filled Transformers. Electra, CIGRE France, 186, 30-51.
[3]	IEC (1999) Guide to the Interpretation of Dissolved and Free Gasses Analysis. IEC Standard 60599, IEC Publ. 60599.
[4]	Singh, S. and Bandyopadhyay, M.N. (2010) Duval Triangle: A Noble Technique for DGA in Power Transformers. International Journal of Electrical and Power Engineering, 4, 193-197. http://dx.doi.org/10.3923/ijepe.2010.193.197
[5]	Electric Cooperative Research Council (2009) The Revised Guidelines of Power Transformers. Vol. 1, Heisei 21 Years.
[6]	Qi, Y.G., Ming, L.K., Sing, G.B., Sung, S.U. and Xia, S. (2012) Nan Cou E/S #4 ATr Overhaul Report. Taiwan Power Company Institute.
[7]	Atanasova-Höhlein, I. (2014) DGA-Method in the Past and for the Future. Siemens Company. https://www.energy.siemens.com/mx/pool/hq/services/power-transmission
[8]	Than, C.F., Qing, C.J. and Than, L.Y. (2012) Nan Cou E/S # 4 ATr Overhaul Report. Future Electric Co. Ltd.