Title :
A Faraday effect based 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; transducers; 1 kA; 20 kA; Faraday effect; clamp-on magneto-optical current transduce; engineering design; feedback scheme; light source stabilisation; power system metering; power system relaying; power systems; Circuit testing; Conductors; Design engineering; Faraday effect; Magnetic sensors; Magnetooptic effects; Optical design; Optical feedback; Power system relaying; Transducers;
Conference_Titel :
WESCANEX 95. Communications, Power, and Computing. Conference Proceedings., IEEE
Conference_Location :
Winnipeg, Man.
Print_ISBN :
0-7803-2725-X
DOI :
10.1109/WESCAN.1995.494050
