| Title |
A Failure Diagnosis Method of Oil-Filled Transformer Using Expert System Based on Duval Triangle Method and IEC 60599 |
| Authors |
이형진(Hyeong-Jin Lee) ; 윤광훈(Kwang-Hoon Yoon) ; 권동진(Dong-Jin Kweon) ; 김재철(Jae-Chul Kim) |
| DOI |
https://doi.org/10.5370/KIEE.2019.68.10.1189 |
| Keywords |
Transformer; IEC 60599; Duval Triangle Method(DTM); Failure Diagnosis; Expert System; Fuzzy Logic |
| Abstract |
DGA(Dissolved Gas Analysis) is a reliable method for detection of fault in oil-filled transformer. Among all the available techniques; IEC 60599 and DTM(Duval Triangle Method) is widely used. Most DGAs; including IEC 60599 and DTM; diagnose failure in the transformer through gas composition ratio. If the gas composition ratio is not calculated properly; the failure in the transformer can not be accurately diagnosed. Also; conventional techniques are difficult to consider the operating characteristics of the transformer. This paper proposes failure diagnosis technique of a transformer using expert system. The expert system was created from fuzzy logic based on IEC 60599 and DTM. The effectiveness of the expert system was verified by using MATLAB. |