DEVELOPMENT OF A MATHEMATICAL MODEL OF MAGNETIC FIELD DISTRIBUTION IN MAGNETIC CONDUCTORS OF A WIDE-RANGE CURRENT TRANSFORMER
Abstract
The article is devoted to the analysis of the distribution of the magnetic field in the magnetic conductors of a wide-range current transformer for the development of a mathematical model that can be used as the basis for calculating its static characteristics and error. The design, replacement circuits and design model of a current transformer are given. The relations of magnetic induction and tension from the coordinate of the position of the primary winding are obtained. It is shown that the conversion range can be adjusted depending on the different positions of the bus with current, as a result of changing the values of the magnetic resistance of the magnetic circuit. Formulas for determining current and angular errors are obtained. A quantitative assessment was made for various values of the input current.