DocumentCode
721808
Title
On-line demagnetization method for an iron core CT
Author
Zheng, T. ; Hu, E. ; Yang, H. ; Zhao, R. ; Kang, Y. ; Terzija, V.
Author_Institution
Coll. of Electr. Eng., Zhejiang Univ., Hangzhou, China
fYear
2015
fDate
11-15 May 2015
Firstpage
1
Lastpage
1
Abstract
This paper proposes a demagnetization method for iron core current transformers (CT). A dc voltage source is used to charge an inductor, and the discharging effect of the charged inductor is used to demagnetize the remanent flux of the iron core CT. To verify the performance of the proposed method, the different core characteristics, level of remanent flux, and possible errors in all elements and measured core characteristics are analyzed with EMTP-RV simulator.
Keywords
current transformers; demagnetisation; remanence; transformer cores; EMTP-RV simulator; charged inductor; dc voltage source; discharging effect; iron core current transformers; on-line demagnetization; remanent flux; Current measurement; Current transformers; Demagnetization; Inductors; Iron; Measurement uncertainty; Transformer cores;
fLanguage
English
Publisher
ieee
Conference_Titel
Magnetics Conference (INTERMAG), 2015 IEEE
Conference_Location
Beijing
Print_ISBN
978-1-4799-7321-7
Type
conf
DOI
10.1109/INTMAG.2015.7157048
Filename
7157048
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