Residual Flux Measurement of Single-phase Transformers based on Equivalent Resistance
Qingkun Wang,
Yuzhan Ren,
Youhua Wang
et al.
Abstract:Due to the presence of transformer residual flux, the magnetic flux of the core rapidly reaches saturation, thus causing an inrush current when the no-load transformer is directly connected to the grid, which affects the safe operation of the grid. Therefore, it is necessary to study the residual flux in the core to reduce the inrush current. However, the residual flux estimation has a large error. In this paper, a method is proposed to measure the residual flux of the transformer core by solving equivalent re… Show more
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