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Method for diagnosing winding fault on transformer, comprises measurement of impedance over ranges of frequency and calculation of three correlation parameters and fourth transformer parameter
Method for diagnosing winding fault on transformer, comprises measurement of impedance over ranges of frequency and calculation of three correlation parameters and fourth transformer parameter
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机译：诊断变压器绕组故障的方法，包括测量整个频率范围内的阻抗并计算三个相关参数和第四个变压器参数
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摘要
The winding of impedance (ZT) is connected to ground and a system analyser (2) through equal cable impedances (Z1). Signals (S) are generated over three ranges of frequency to produce measured signals (R,T) and gains which are compared to those of a healthy winding. Three correlation parameters for the three ranges are produced and the relative variation of a fourth parameter chosen from transformer characteristics is determined
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