Determining Sensitive Test Configuration of Power Transformers for FRA Measurement Using New Approach in Finite Element Analysis
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Frequency response analysis is deemed as a suitable diagnostic method in identifying electrical and/or mechanical faults of power transformers that is extended recently. Sensitivity and accuracy of measured FRA is very effective in detecting faults that may not be investigated in power transformers comprehensively. In this paper, parameters that have influence on the sensitivity of power transformer are checked and the best conditions are obtained out of many analyses. The simulation is accomplished by using finite element method which is known as one of the most accurate types of simulation. Some novelties in analysis and solution type are used that has increased accuracy and decreased the time of simulation considerably.
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