Title :
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
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;
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
DOI :
10.1109/CDCIEM.2011.287
