Discussion on a Device for Measuring 3-Phase Alternating Current at a Distance

 We have done a preliminary analysis on the possibility of building a system that could test the alternating current in three phases at a distance. We wanted to raise the difficulty and chose to accept the three-phase alternating current flowing through three wires. Furthermore, we decided to consider a metre that could calculate all three currents as time functions, so that such a metre could be safely mounted on the transmission line without cutting off the line current. This research provides a brief look at the theoretical context of such a device and draws some mathematical results relevant to the device's theory and structure. Our findings indicate that it is possible to construct such a device, given that the distances between the three current-carrying wires and the device's two sensors are reasonably accurately known. There are ways to calculate these distances, but these are not the subject of this paper.

Author(s) Details

Dr. Seppo Mäkinen
School of Technology, Vaasa University of Applied Sciences, Vaasa, Finland.

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