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Proceedings Paper

Current transducers used in power line measurements
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Paper Abstract

There are many solutions used for current measurements in power lines. The study shows a transducer consisting of a ferromagnetic core, a beam placed in an air-gap and a sensor for optical readout. The beam is made of silicon with a thin 50%Ni50%Fe film. The material of the core is permalloy. A distribution of magnetic field depends on current supplying the power line. The beam is deflected due to magnetic field in the air-gap. A deflection of the beam is measured by the optical fibre sensor. Its advantage is simple design, high precision of processing, non-electric transmission, low costs and ability of a non-contact measurement. Comsol Multiphysics 4.4 and Magnetic Fields Module (mef) were used for modeling. An influence of magnetic circuit's materials and dimensions of the ferromagnetic core and the air-gap were tested in order to determine the most sufficient distribution of magnetic field in the air-gap. The study shows results of the modeling of the transducer compared to practical results for a similar construction scaled down to lower current values.

Paper Details

Date Published: 19 August 2014
PDF: 6 pages
Proc. SPIE 9291, 13th International Scientific Conference on Optical Sensors and Electronic Sensors, 92910I (19 August 2014); doi: 10.1117/12.2073032
Show Author Affiliations
Sz. Milcarz, Lodz Univ. of Technology (Poland)
J. Gołębiowski, Lodz Univ. of Technology (Poland)

Published in SPIE Proceedings Vol. 9291:
13th International Scientific Conference on Optical Sensors and Electronic Sensors
Jacek Golebiowski; Roman Gozdur, Editor(s)

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