DocumentCode
915131
Title
Optically powered hybrid current measurement system
Author
Holmes, Reid ; Jones, G.R.
Volume
29
Issue
12
fYear
1993
fDate
6/10/1993 12:00:00 AM
Firstpage
1049
Lastpage
1051
Abstract
An optically coupled and optically powered hybrid current measurement system for use in high voltage power systems is described. The transmitter, which uses pulse frequency modulation, is designed for minimum power operation of 2.5 mW. The signal to noise ratio is 54 dB corresponding to a resolution of 1 A. System accuracy is determined by the temperature sensitivity of the transmitter which is approximately 400 p.p.m. degrees C-1.
Keywords
electric current measurement; electric sensing devices; high-voltage techniques; optical fibres; optical receivers; power system measurement; pulse frequency modulation; transmitters; 2.5 mW; 54 dB; HV system application; PFM; SNR; high voltage power systems; hybrid current measurement system; line current; minimum power operation; optically coupled; optically powered; pulse frequency modulation; transmitter;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:19930700
Filename
220796
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