Transformer Fault Diagnosis Method Using Dissolved Gas Analysis: IEC Three-Ratio Approach
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Various methods exist for transformer fault diagnosis using dissolved gas analysis in insulating oil, with the IEC Three-Ratio Method being the most widely adopted approach. This technique determines potential transformer faults by analyzing specific gas ratios obtained from dissolved gas measurements. When implementing the IEC Three-Ratio Method through MATLAB programming, the analysis process involves gas ratio calculations, threshold comparisons, and pattern recognition algorithms that ultimately generate a simplified fault diagnosis decision table. This decision table, created through systematic data processing and rule-based classification in MATLAB, enables engineers to accurately identify transformer fault conditions and implement appropriate maintenance strategies, thereby ensuring reliable transformer operation and preventing unexpected failures.
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