Optical Sensors for the Measurement of Electric Current and Voltage

摘要

Optical sensors for the measurement of electrical current and voltage have been developed for application in electric power systems. The current sensor, based on the Faraday effect in a monomode glass fiber, and the voltage sensor, based on the transverse Pockels effect in a crystal, are demonstrated in wide-band (10 MHz) interference-free measurements of pulsed currents and impulse voltages.