Abstract
The optimal functioning of the electric power industry can be ensured only if the important problem is successfully resolved by reliable measurement of electrical quantities, such as voltage, current, and power. In industry, a current transformer is often used as a current meter, which makes it possible to obtain an AC current measurement result with high accuracy. Structurally, the current transformer has a significant drawback, which is that the opening of the secondary measuring winding leads to an emergency. To solve this problem, you can apply the improved design of the current transformer squirrel-cage current transformer (in the form of a cylinder or ring). This article presents the results of two-dimensional modeling of the electromagnetic field of current transformers with a short-circuited coil, with cores made of different grades of amorphous iron in the ELCUT software package. In addition, the results of experimental studies of the improved design of the current transformer are presented. An analysis of the results allows us to conclude that the use of a core made of amorphous iron with a higher magnetic permeability will lead to economic benefits and make the measurement process more energy efficient.
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