Title :
A clamp-on magneto-optical current transducer for power systems
Author :
Song, J. ; McLaren, P.G. ; Thomson, D.J. ; Middleton, R.L.
Author_Institution :
Dept. of Electr. & Comput. Eng., Manitoba Univ., Winnipeg, Man., Canada
Abstract :
A new type of Faraday effect-based magneto-optical current transducer (MOCT) has been developed. This paper presents the theoretical background, engineering design and test results of this clamp-on MOCT. The sensor consists of two separate clamp-on parts. This design avoids the need to break the current carrying circuit in order to have the conductor enclosed by the optical path while keeping the same measurement accuracy. A feedback scheme has been designed to stabilize the light source. The MOCT has two output stages, 1 kA, and 20 kA, so that it can provide current signals for both power system metering and relaying devices
Keywords :
Faraday effect; electric current measurement; magneto-optical sensors; power system measurement; power system relaying; 1 kA; 20 kA; Faraday effect; clamp-on magneto-optical current transducer; current carrying circuit; current signals; engineering design; feedback scheme; light source stabilisation; measurement accuracy; power system metering devices; power system relaying devices; test results; theoretical background; Circuit testing; Design engineering; Magnetic sensors; Magnetooptic effects; Optical design; Optical feedback; Power engineering and energy; Power system relaying; Power systems; Transducers;
Conference_Titel :
Electrical and Computer Engineering, 1996. Canadian Conference on
Conference_Location :
Calgary, Alta.
Print_ISBN :
0-7803-3143-5
DOI :
10.1109/CCECE.1996.548294
