Current transducers used in power line measurements

Sz. Milcarz; J. Gołębiowski

doi:10.1117/12.2073032

19 August 2014 Current transducers used in power line measurements

Sz. Milcarz, J. Gołębiowski

Proceedings Volume 9291, 13th International Scientific Conference on Optical Sensors and Electronic Sensors; 92910I (2014) https://doi.org/10.1117/12.2073032
Event: 13th International Scientific Conference on Optical Sensors and Electronic Sensors, 2014, Lodz, Poland

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.

Citation Download Citation

Sz. Milcarz and J. Gołębiowski "Current transducers used in power line measurements", Proc. SPIE 9291, 13th International Scientific Conference on Optical Sensors and Electronic Sensors, 92910I (19 August 2014); https://doi.org/10.1117/12.2073032

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