2017 Volume 137 Issue 1 Pages 58-64
The current sensor of the voltage-current sensor system proposed by us comprises two air-core sensing coils connected in series to each other with an opposite polarity. By doing so, it can measure the harmonics and power factor while removing the influence from power lines of other phases. When the sensors are surrounded by an iron case of a pole switch, EMF may be influenced. However, it has been confirmed that a large change is not observed with regard to measurement of harmonics, and the proposed sensors including a voltage sensor can be available without problem. Therefore it has been found out that the proposed sensor is able to perform power measurements in a state of being incorporated in the pole switch.
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The Journal of the Institute of Electrical Engineers of Japan
