Title :
Estimation of the primary current in a saturated transformer
Author :
Chen, K.W. ; Glad, S.T.
Author_Institution :
Dept. of Electr. Eng., Linkoping Univ., Sweden
Abstract :
It is pointed out that, when a current in a power system is measured using a transformer, the measurement can be distorted by transformer saturation. The authors examine two methods of estimating the primary current from the secondary in the presence of saturation. The first is based on an extended Kalman filter, while the second is based on an off-line Gauss-Newton method
Keywords :
Kalman filters; current transformers; electric current measurement; instrument transformers; iterative methods; power system measurement; extended Kalman filter; off-line Gauss-Newton method; power system; primary current estimation; saturated transformer; Circuit faults; Current measurement; Current transformers; Distortion measurement; Electric variables measurement; Gaussian processes; Least squares methods; Newton method; Nonlinear distortion; Power measurement; Power system measurements; Recursive estimation; Switches;
Conference_Titel :
Decision and Control, 1991., Proceedings of the 30th IEEE Conference on
Conference_Location :
Brighton
Print_ISBN :
0-7803-0450-0
DOI :
10.1109/CDC.1991.261872
