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Transformer electromagnetic design closely related to leakage magnetic field[1][2]. Increasing with the capacity of transformer, the rise of temperature will affect the normal operation of the transformer. This paper will use the existing commercial software and instrument to leakage magnetic field simulation, calculation of temperature rise and the corresponding experiment. In order to better optimize...
The saturation of a current transformer (CT) will cause severe distortion in the secondary current. Each fundamental cycle of the secondary current consists of two portions, the unsaturated portion and the saturation. This paper proposes a morphological scheme for the detection of the saturations and an embedding and optimization scheme for the removal of the exponential decaying DC offset and the...
This paper presents a novel method for current transformer (CT) saturation detection and compensation. In the method, CT saturation characteristics are represented by a partial nonlinear regression model. The parameters of this model can be estimated rapidly and accurately using both unsaturated and saturated sections of the waveform of a secondary fault current, even in a heavy saturation scenario,...
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