Transformer bushing air gap defect degree detection method, device and equipment and storage medium

Abstract

The invention discloses a transformer bushing air gap defect degree detection method and device, equipment and a storage medium. The method comprises the following steps: constructing an air gap simulation model of a transformer bushing according to acquired air gap basic data; performing electric field distribution simulation analysis according to the air gap simulation model, and calculating an electric field distortion rate; if the electric field distortion rate is greater than a distortion threshold value, calculating discharge power corresponding to each air gap through a preset three-capacitor equivalent model; calculating the ablation amount of air gap discharge through a preset heat conduction equation and a preset Arrhenius equation; and calculating the air gap defect degree grade of the transformer bushing according to the electric field distortion rate, the discharge power and the ablation amount to obtain a defect degree detection result. The technical problem that in the prior art, only whether an air gap exists or not can be judged, the dynamic development process of the air gap cannot be quantified, and consequently the air gap defect detection result lacks accuracy can be solved.

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