DocumentCode
1009989
Title
Onsite Calibration of a Current Transformer Using a Rogowski Coil
Author
Suomalainen, Esa-Pekka ; Hällström, Jari K.
Author_Institution
Helsinki Univ. of Technol. (MIKES-TKK), Espoo
Volume
58
Issue
4
fYear
2009
fDate
4/1/2009 12:00:00 AM
Firstpage
1054
Lastpage
1058
Abstract
This paper describes a reference current-measuring system for the onsite calibration of high-voltage current transformers. The reference current-measuring system consists of a Rogowski coil, a current shunt, two digitizing voltmeters, and a computer to control the voltmeters. The method of generation of the high current and the uncertainty of the calibration are discussed. The results of a calibration performed onsite on a 400-kV substation are presented. Uncertainties of 300 muA/A for ratio and 1 angular minute for phase displacement were achieved with this method onsite.
Keywords
calibration; coils; current transformers; electric current measurement; substations; Rogowski coil; current shunt; high-voltage current transformers; onsite calibration; phase displacement; reference current-measuring system; substation; voltage 400 kV; High current; Rogowski coil; high voltage; instrument current transformer (CT); onsite calibration;
fLanguage
English
Journal_Title
Instrumentation and Measurement, IEEE Transactions on
Publisher
ieee
ISSN
0018-9456
Type
jour
DOI
10.1109/TIM.2008.2007031
Filename
4689387
Link To Document