Title :
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
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;
Conference_Titel :
Applied Measurements for Power Systems Proceedings (AMPS), 2014 IEEE International Workshop on
Conference_Location :
Aachen
DOI :
10.1109/AMPS.2014.6947700
