Transformer winding deformation fault diagnosis method based on frequency sweep short circuit characteristics
A transformer winding and fault diagnosis technology, applied in the direction of electric/magnetic solid deformation measurement, electromagnetic measuring device, etc., can solve the lack of frequency sweep short-circuit impedance data analysis method, feature extraction method, lack of accurate judgment, and enhanced operability to quantify faults Diagnosis methods, difficult to apply and other problems, to achieve the effect of easy implementation, sensitive response and accurate judgment
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[0017] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0018] like figure 1 As shown, the present invention judges whether there is a hidden danger of deformation and fault in the winding according to the frequency-sweeping short-circuit impedance characteristics of the transformer winding. When the transformer winding is deformed, the impedance value of the winding at different frequencies will change. The transformer winding deformation fault diagnosis method based on frequency-sweeping short-circuit characteristics of the present invention is to obtain the difference degree curve according to the measured three-phase frequency-sweeping short-circuit impedance data, and compare it with the standard difference degree curve, if any one difference degree curve exceeds the standard difference If it exceeds the warning value curve of the standard difference degree curve, it is diagnosed that the winding may ...
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