Abstract
Saturable magnetic circuit is a common phenomenon in power system. It can lead to waveform distortion, coefficient of self-inductance decrease and measurement error increase. So establishing a mathematical model for saturable magnetic circuit and revealing the mathematical relationships in saturable phenomenon. It is helpful to reliable and safe operation of power system. This paper base on double expontential function fitting algorithm and simplex algorithm to establish the function relationship between relative permeability and magnetic field intensity. Applying for the model,we can obtain the waveform of magnetic flux in transformer core and transformer voltage waveform. The research has certain significance in the abstract and foreground in the application for the study of saturable phenomenon.
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