Title :
Electronic compensation of voltage transformers
Author :
Slomovitz, Daniel
Author_Institution :
Usinas y Trasmisiones Electr. Lab., Montevideo, Uruguay
Abstract :
A method for compensating ratio errors and phase displacements of measuring voltage transformers by a simple electronic circuit is introduced. This electronic compensator keeps the primary winding isolated from the secondary winding, so that it can be applied to voltage transformers in any kind of use. It also works with large load power variations. With this compensation, smaller and cheaper transformers may fulfil the same accuracy and power output requirements as larger transformers.<>
Keywords :
error compensation; potential transformers; compensation; phase displacements; potential transformers; primary winding; ratio errors; secondary winding; voltage transformers; Equivalent circuits; Impedance; Measurement errors; Operational amplifiers; Size measurement; Transformer cores; Voltage control; Voltage measurement; Voltage transformers;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
