In this work, we present the design, laboratory tests, and the field trial results of a power-over-
fiber (PoF) low power instrument transformer (LPIT) for voltage and current measurements in …

We propose herein a novel optical sensing technology using liquid crystal based
transducers to measure simultaneously voltage and current from overhead power lines in …

Optical Current Transformers (OCTs) and Optical Voltage Transformers (OVTs) are an
alternative to the conventional transformers for protection and metering purposes with a …

Sensors based on polarization are suitable for application in power grids due to their
excellent characteristics, such as high electrical insulation, non-magnetic saturation, oil-free …

Como contribuição a digitalização das redes de energia elétrica este trabalho apresenta os
resultados da demonstração em campo de uma concepção inédita e inovadora do uso de …