Title :
Design of a non-invasive current sensor for application on high voltage lines
Author :
Houtzager, Ernest ; Rietveld, Gert ; Dessens, J. ; Heemskerk, M. ; van den Brom, Helko E.
Author_Institution :
VSL, Delft, Netherlands
Abstract :
This paper describes the design and construction of an openable core current transformer (CT) to be used on high-voltage lines or busbars. The current sensor consists of a high current stage with a ratio of 400:1 and a low current stage with a ratio of 100:1. Both have a toroid core and are of the enhanced core type. The high current stage is cut in two halves to be able to connect without breaking the high voltage line. The overall accuracy is limited by the cut core of the high current stage. The accuracy is <; 10 μA/A and <; 5 μrad.
Keywords :
busbars; current transformers; electric current measurement; electric sensing devices; high-voltage techniques; power overhead lines; busbars; current transformer; high-voltage line; noninvasive current sensor design; toroid core; Accuracy; Current measurement; Current transformers; Permeability; Transformer cores; Voltage measurement; current transformer; high current; high voltage (HV); precision measurements; revenue metering; substation; traceability;
Conference_Titel :
Precision Electromagnetic Measurements (CPEM 2014), 2014 Conference on
Conference_Location :
Rio de Janeiro
Print_ISBN :
978-1-4799-5205-2
DOI :
10.1109/CPEM.2014.6898540
