Abstract:Converter transformer inter‐tap short‐circuit faults in on‐load tap changers have occurred successively in recent years, resulting in severe accidents and enormous losses. Due to the lack of an effective model and credible arc‐in‐oil conductance parameters, related fault analysis has remained a challenge. This paper develops a bidirectional field–circuit coupling method for modelling inter‐tap faults, in which the electromagnetic field and electric circuit are directly coupled and simultaneously solved. After … Show more
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