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

Volume

2

fYear

2001

fDate

2001

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 A_rms nominal current at 50 Hz in high-voltage power line under 300 kV with accuracy of 1.2 A_rms (±1% of the measured signal) are achieved. Relaying field tests of 310 A_rms 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;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Tech Proceedings, 2001 IEEE Porto

Conference_Location

Porto

Print_ISBN

0-7803-7139-9

Type

conf

DOI

10.1109/PTC.2001.964770

Filename

964770