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Dissolved Gas Analysis in transformer using Fuzzy Logic based on IEC Standard

International Journal of Electrical and Electronics Engineering
© 2017 by SSRG - IJEEE Journal
Volume 4 Issue 10
Year of Publication : 2017
Authors : K.C. Jane, P.D. Ugale, S. D. Hire
10.14445/23488379/IJEEE-V4I10P101
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How to Cite?

K.C. Jane, P.D. Ugale, S. D. Hire, "Dissolved Gas Analysis in transformer using Fuzzy Logic based on IEC Standard," SSRG International Journal of Electrical and Electronics Engineering, vol. 4,  no. 10, pp. 1-4, 2017. Crossref, https://doi.org/10.14445/23488379/IJEEE-V4I10P101

Abstract:

Dissolved Gas Analysis (DGA) [1-4] of insulation oil in an oil insulated transformer is one of the most useful techniques for the detection of the incipient faults. The various methods, such as Gas key method, Ratios method, Graphical representation method are well known to interpret DGA results. When multiple fault exists in a transformer, these methods sometimes fail to diagnose. IEC This paper proposes a Fuzzy Three Ratio Method; it is considered that the drawbacks of the above mention Methods lies in: when the ratio crosses the coding boundary, codes change sharply, but in reality the boundary should be fuzzied[7]. This paper first propose the fuzzy membership functions for codes "zero", "one", "two", then it transfer the conventional logic "AND" and "OR" used in IEC three-ratio method into fuzzy logic and finds the diagnosing steps of this method. MATLAB based scripts prove that the proposed method can overcome the drawbacks of the above mention Methods that cannot diagnose multi-fault and no matching codes for diagnosis. In this paper a Fuzzy Logic based approach which can diagnose multiple faults is presented.

Keywords:

Transformer, DGA, fuggy three ratio method.

References:

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[3] R. Naresh, Veena Sharma, and Manisha Vashisth, ―An Integrated Neural Fuzzy Approach for Fault Diagnosis of Transformers, IEEE transactions on power delivery, October 2008, vol. 23, no. 4, pp. 2017– 2024.
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[7] Kunjal Jane, Prof. S. A Borakhade , Electrical Engineering, P. R. Pote (Patil) COE, Amravati, India,”Dissolved Gas Analysis in Transformer using Three Gas Ratio Method and Fuzzy Logic based on IEC Standard, (SSRG-IJEEE) – volume 2 Issue 4 April 2015.