Title :
Electronic system for increasing the accuracy of in-service instrument-current transformers
Author_Institution :
Departamento de Ingenieria Electrica, Univ. de la Repeblica, Montevideo, Uruguay
Abstract :
An electronic compensator of ratio errors and phase-displacements is proposed for in-service transformers. Neither an auxiliary winding nor auxiliary core is needed; and large variations of the load connected to the secondary winding are permitted, as it is required by the standards.
Keywords :
current transformers; error compensation; instrument transformers; metering; power system measurement; compensating method; electronic compensator; external controlled source; in-service transformers; instrument current transformers; load conditions; magnetizing current; phase displacements; precision improvement; ratio errors; Costs; Current measurement; Current transformers; Frequency; Impedance; Instruments; Magnetic analysis; Power amplifiers; Saturation magnetization; Transformer cores;
Conference_Titel :
Precision Electromagnetic Measurements, 2002. Conference Digest 2002 Conference on
Conference_Location :
Ottawa, Ontario, Canada
Print_ISBN :
0-7803-7242-5
DOI :
10.1109/CPEM.2002.1034820
