Title :
Optoelectronic current transformer based on remotely powered GMR solid-state device
Author :
Ribeiro, A. B Lobo ; Matos, A.G. ; Salcedo, J.A.R.
Author_Institution :
Dept. Sci. & Technol., Fernando Pesssoa Univ., Porto, Portugal
Abstract :
An optoelectronic current transformer based on a remotely optical powered giant magnetic resistance (GMR) via an optical fiber link is demonstrated. Preliminary measurements of 1200 Arms nominal current at 50 Hz in high-voltage power line under 300 kV with accuracy of 1.2 Arms (±1% of the measured signal) are achieved. Relaying field tests of 310 Arms current signal at 50 Hz on a 150 kV high voltage power line are demonstrated
Keywords :
colossal magnetoresistance; current transformers; electric current measurement; fibre optic sensors; measurement by laser beam; optical fibres; optoelectronic devices; 100 m; 1200 A; 150 kV; 300 kV; 310 A; 50 Hz; current sensors; fiber optic sensors; high voltage power line; high-voltage power line; magnetic sensors; nominal current measurement; optical fiber link; optoelectronic current transformer; relaying field tests; remotely optical powered giant magnetic resistance; Current measurement; Current transformers; Electrical resistance measurement; Magnetic sensors; Optical fiber devices; Optical fiber sensors; Optical fibers; Optical sensors; Power measurement; Solid state circuits;
Conference_Titel :
Power Tech Proceedings, 2001 IEEE Porto
Conference_Location :
Porto
Print_ISBN :
0-7803-7139-9
DOI :
10.1109/PTC.2001.964770
