Non-Contact Current Sensor Array For High Voltage Electric Power Lines

Abstract

A non-contact current sensor array for high voltage electric power lines provides analog suppression of magnetic coupling from neighboring conductors. In a three-phase example, the sensor array measures magnetic coupling proportional to the current in a selected phase conductor (e.g., Phase-A) of a three-phase power line, while suppressing magnetic coupling from the other phase conductors of the power line (e.g., Phase-B and Phase-C). The sensor array includes a primary sensor in transverse alignment with Phase-A, a first ancillary sensor in radial alignment with Phase-B, a second ancillary sensor in radial alignment with Phase-C. The primary sensor, first ancillary sensor, and second ancillary sensor are electrically connected in series with respective winding turns selected to substantially cancel out magnetic coupling from Phase-B and Phase-C in a current measurement by the sensor array.

Dependencies are inferred from the claim text.