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Published Article / I08/2008/I-021 ENY-ARTICLE-2008-203

CT saturation correction based on the estimated CT saturation time constant

Rebizant, W (Wroclaw University of Technology, Poland) ; Wiszniewski, A (Wroclaw University of Technology, Poland) ; Schiel, L (SIEMENS AG, PTD EA, Berlin, Germany)


Abstract: A new method for CT saturation correction is presented that is based on an on-line estimation of the CT magnetizing inductance. The approach adopted is based on numerical solution of the differential equation, which describes the saturated current transformer. The correction procedure proposed has been tested with EMTP-ATP signals proving to be an effective tool for primary current reconstruction.

Keyword(s): current transformer ; CT saturation correction ; CT time constant ; EMTP simulations
Note: The Institution of Engineering and Technology 9th International Conference on Developments in Power System Protection. DPSP 2008, Glasgow, UK, 17-20 March 2008. London : Institution of Engineering and Technology, [2008]. pp. 174-179

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Record created 2008-11-08, last modified 2008-11-08

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