Open AccessCorrection of saturated current from measurement current transformer
Author(s) -
Ozgonenel Okan
Publication year - 2013
Publication title -
iet electric power applications
Language(s) - English
Resource type - Journals
ISSN - 1751-8679
DOI - 10.1049/iet-epa.2013.0105
Subject(s) - current transformer , current (fluid) , compensation (psychology) , transformer , electronic engineering , hysteresis , computer science , control theory (sociology) , topology (electrical circuits) , engineering , electrical engineering , voltage , physics , artificial intelligence , psychology , control (management) , quantum mechanics , psychoanalysis
The suggested study presents an easy and effective way to compensate for the distorted secondary current of measurement‐type current transformers (CTs). The suggested compensating algorithm is based on estimating the magnetising current from a Fröhlich hysteresis approach. The efficiency of the proposed technique was first proved using computer simulations. The prototype compensating device was then tested in a laboratory environment using a 5/1A, 10VA, C0,5 measurement‐type CT. The proposed compensation algorithm is dependent on CT burden and X/R ratio of the line where CT is connected. The outcomes of the study demonstrate that the technique is able to reconstruct the secondary current with an acceptable error and can be applied to any measurement‐type CT regardless of its size and winding topology.