NDLI: Modeling and simulation of magnetizing inrush current of large power transformers

Content Provider	IEEE Xplore Digital Library
Author	Li Donoxia Wang Zanji Liu Xiucheng
Copyright Year	2001
Description	Author affiliation: Tsinghua Univ., Beijing, China (Li Donoxia)
Abstract	This paper presents a model for simulating magnetizing inrush current in large power transformer. The voltage and current distribution in the transformer winding under energisation conditions is formulated on the basis that the magnetic field can be considered as the composition of main flux in the iron core and leakage flux in the coil space. The calculation of the circuit parameters and the methods for solving the equations are also discussed. The simulation results for a single-phase, three-winding autotransformer and a three-phase, five-legged, three-winding transformer show the effect of energisation angle, the magnitude and the direction of the original residual magnetism on the inrush current. The difference of the B-H curves obtained from the measurements of the material of the iron core and the laminated iron core is also indicated. The proposed model is suitable to all kinds of structures of large power transformers.
Sponsorship	China Electrotech. Soc.(CES)
Starting Page	440
Ending Page	443
File Size	336153
Page Count	4
File Format	PDF
ISBN	7506251159
DOI	10.1109/ICEMS.2001.970706
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-08-18
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	International Academic Publishers/World Publishing Corporation
Subject Keyword	Surges Magnetic flux Power transformers Iron Transformer cores Magnetic cores Current distribution Windings Magnetic fields Coils
Content Type	Text
Resource Type	Article

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