Transformer abnormality determination device, transformer abnormality determination method, and transformer abnormality determination program

摘要

PROBLEM TO BE SOLVED: To provide a transformer abnormality judging device capable of quantitatively judging abnormality in an electric circuit inside a transformer. The present disclosure discloses a waveform of an exciting current generated when one winding of a primary side and a secondary side is opened in a transformer and a power source is connected to the other winding of the primary side and the secondary side. , The measurement unit that acquires under the same conditions as the waveform that forms the reference waveform and the Mahalanobis distance of the acquired waveform with respect to the reference waveform are calculated, and if the calculated Mahalanobis distance exceeds a predetermined threshold, the An abnormality determination device for a transformer, comprising: a determination unit that determines that [Selection diagram] Figure 1