Study on Low-Frequency Extrapolation Method for Calibration of High Current Transformers

Author

Changqing, Jiang ; Jianan, Cao

Author_Institution

Electr. Eng. Sch., Xi´´an Jiaotong Univ., Xi´´an, China

fYear

2011

fDate

19-20 Feb. 2011

Firstpage

1746

Lastpage

1749

Abstract

In consideration of Jiles-Atherton dynamic hysteresis model of iron core, the equivalent circuit of high current transformer with frequency effect is proposed. The low-frequency extrapolation method for on-site calibration of current transformer is obtained, that extrapolates the static hysteresis loop to the dynamic hysteresis loop by two fitted parameters from which the ratio error and phase error of current transformer are formulated. The simulation of dynamic hysteresis loop is also conducted.

Keywords

calibration; current transformers; equivalent circuits; extrapolation; hysteresis; transformer cores; Jiles-Atherton dynamic hysteresis model; equivalent circuit; high current transformer calibration; iron core; low-frequency extrapolation method; phase error; ratio error; static hysteresis loop; Computers; Distributed control; Monitoring; Jiles-Atherton dynamic hysteresis model; low-frequency extrapolation; on-site calibration; phase error; ratio error;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer Distributed Control and Intelligent Environmental Monitoring (CDCIEM), 2011 International Conference on

Conference_Location

Changsha

Print_ISBN

978-1-61284-278-3

Electronic_ISBN

978-0-7695-4350-5

Type

conf

DOI

10.1109/CDCIEM.2011.287

Filename

5748155