Title :
CT Saturation Correction Based on the Estimated CT Saturation Time Constant
Author :
Rebizant, W. ; Wiszniewski, A. ; Schiel, Ludwig
Author_Institution :
Wroclaw Univ. of Technol., Warsaw
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.
Keywords :
current transformers; differential equations; inductance; CT saturation time constant; EMTP-ATP signal; current transformer saturation correction; differential equation; inductance magnetization; on-line estimation; Circuit faults; Current transformers; Fault currents; Inductance; Magnetic cores; Magnetic flux; Saturation magnetization;
Conference_Titel :
Developments in Power System Protection, 2008. DPSP 2008. IET 9th International Conference on
Conference_Location :
Glasgow
Print_ISBN :
978-0-86341-902-7
