Application of Adaptive Neuro-Fuzzy Inference System for Transformer Fault Diagnosis
Abstract
Transformer is one of the key components in a power
system. It can experience thermal and electrical stresses during itsoperation. The mineral oil and the insulation paper used in transformer can undergo chemical changes under these stresses andgases are generated. These gases dissolve in mineral oil. Thegases dissolved in oil are extracted in the laboratory using gas chromatograph. The gas content and the type of gas can reveal the nature of fault present in the Transformer. Natures of faults considered in this study are partial discharges, discharges of low energy, discharges of high energy, and thermal faults. Based on the dissolved gases present in the transformer oil several diagnostic
methods such as Doernburg method, Roger’s ratio method etc are commonly used for fault diagnosis. In some cases, all these methods are not able to diagnose the fault. Hence, there is a need to develop new methods. In this paper an Adaptive Neuro-Fuzzy inference system is applied for diagnosis of transformer faults.
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