Zero-current detector for high voltage DC transmission line

Details Zero-current detector for high voltage DC transmission line Zero-current detector for high voltage DC transmission line

1979-08-27

1981-07-21

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Magnetic saturation

324127, G01R 1502

Patent

active

042800935

ABSTRACT:
A saturable magnetic reactor is disposed about one of the current-carrying conductors in a DC power transmission line. A zero-current status for the transmission line is sensed by means of impedance changes in the reactor. A step-down transformer cascade electromagnetically couples the saturable reactor to impedance detection means, which means typically comprise an oscillator driven bridge circuit.

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