Two-dimensional finite element simulation method and system of leakage magnetic field of transformer

Abstract

The application discloses a two-dimensional finite element simulation method and system of a leakage magnetic field of a transformer. The method includes: acquiring each internal structure of the transformer, and establishing a three-dimensional finite element model of a leakage magnetic field of the transformer according to the internal structures; applying an exciting current to the model to obtain distribution and size of the leakage magnetic field of the transformer; establishing a two-dimensional finite element model of a leakage magnetic field of the transformer according to the internal structures; applying an exciting current to obtain distribution and size of the leakage magnetic field, which is in the two-dimensional finite element model, of the transformer; calculating distribution and size of a leakage magnetic field, which is of the three-dimensional model and corresponds to the two-dimensional model, of the transformer according to a position corresponding relationship of the three-dimensional model and the two-dimensional model; calculating a correction coefficient of the exciting current in the two-dimensional model; and compensating for the exciting current of the two-dimensional model according to the correction coefficient, and calculating and obtaining distribution and size of the leakage magnetic field, which is in a new two-dimensional model, of the transformer. The technical solution of the application can obtain the accurate distribution and size of the leakage magnetic field, which is in the two-dimensional finite element model, of the transformer while calculation and storage resources are saved.

Description

technical field [0001] The present application relates to the technical field of transformers, in particular to a two-dimensional finite element simulation method and system for transformer leakage magnetic fields. Background technique [0002] The transformer has an important function of changing the voltage in the power system, so its role is very important. And as the capacity of the power system gradually increases, the stability of the transformer winding and the degree of damage of the transformer have become the focus of research in related fields as the operating life of the main transformer increases. The transformer leakage magnetic field is an important basis for studying the working stability and damage degree of transformer windings. [0003] In the prior art, the transformer leakage magnetic field is usually simulated to detect the stability of the transformer winding and the damage degree of the transformer. With the continuous development of computer techno...

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Problems solved by technology

[0005] This application provides a two-dimensional finite element simulation method and system for transformer leakage magnetic field, so as to solve the

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