Abstract

This paper gives results of the performance evaluation of noninvasive sensors that are used to estimate current by sensing the magnetic field produced surrounding the overhead power conductors in transmission and distribution of power generated by smart grids. The objective of the research is to replace the conventional instrument transformers to bring more ease of operation and maintenance in addition to save the space in the switchgear as well as substation. The experiment is performed in the laboratory on an alternating current. The sensors work on the principle of Giant Magnetoresistance (GMR) and Tunnel Magnetoresistance (TMR) effect.

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