Procedure for the assessment of metrological characteristics of window-type current transformers in three-phase power systems

Author

Peretto, Lorenzo ; Tinarelli, Roberto

Author_Institution

Dept. of Electr., Electron. & Inf. Eng. “Guglielmo Marconi”, Univ. of Bologna, Bologna, Italy

fYear

2014

fDate

24-26 Sept. 2014

Firstpage

1

Lastpage

6

Abstract

Window-type current transformers are widely used in medium voltage switchboards for measuring the current flowing in the cables entering the board itself. Due to their operating principle, the accuracy of such kind of current transformers may vary depending on many factors, such as, for example, the position of the cable passing through the transformer with respect to the center of the window and the proximity of the other cables. In this paper a procedure for assessing the metrological characteristics of window-type current transformers is presented and discussed along with the results of experimental tests.

Keywords

current transformers; electric current measurement; power cables; power system measurement; cable position; cable proximity; current measurement; medium voltage switchboard; three-phase power system; window-type current transformers metrological characteristic assessment; Accuracy; Calibration; Conductors; Current measurement; Current transformers; Power cables; Sensors; calibration; uncertainty evaluation; window-type current transformer;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Measurements for Power Systems Proceedings (AMPS), 2014 IEEE International Workshop on

Conference_Location

Aachen

Type

conf

DOI

10.1109/AMPS.2014.6947700

Filename

6947700