Compensation of Current Transformers

Author

Baccigalupi, A. ; Liccardo, A.

Author_Institution

Univ. di Napoli Federico II, Naples

fYear

2007

fDate

1-3 May 2007

Firstpage

1

Lastpage

6

Abstract

In the paper a method for the compensation of current transformer is proposed. The method is based on two main steps: (i) the realization of an equivalent short circuit so that the magnetizing current I₀ is not dependent from the burden resistance; (ii) a circuit generating a compensating voltage Vc which compensate the voltage drop across the longitudinal parameters of the transformer. Since the developed transducer is a non-conventional transformer with the secondary nominal current of 5 A, it is not possible to measure the phase and ratio error with a comparison method. At this aim, a technique for measuring the transformer error by means of a data acquisition system is also proposed in the paper.

Keywords

current transformers; current transformers compensation; data acquisition system; equivalent short circuit; magnetizing current; transformer error; voltage drop; Analog circuits; Circuit faults; Conductors; Current measurement; Current transformers; Energy measurement; Magnetic circuits; Magnetic cores; Magnetic flux; Transformer cores; Current Transformers; analog compensation; phase error; ratio error;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference Proceedings, 2007. IMTC 2007. IEEE

Conference_Location

Warsaw

ISSN

1091-5281

Print_ISBN

1-4244-0588-2

Type

conf

DOI

10.1109/IMTC.2007.378991

Filename

4258326