Current Transformer Saturation Detection By Wavelet Transform and Compensation By Newton’s Forward Interpolation
نویسندگان
چکیده
-Protective systems require a faithful reproduction of primary current on the Current Transformer (CT) secondary side. Saturation is a common problem in a steel core CT. Saturation problem causes dreadful effects in the protection systems. This paper presents a simple solution towards detection and compensation of current transformer saturation problems. This paper describes a method in which CT saturation is detected by Wavelet Transform (WT) based Multi-resolution Signal Decomposition (MSD) technique and the compensation of saturated signal is done by Newton’s Forward Interpolation. Various case studies are made and the results obtained are very encouraging. Keywords-Current transformer, Multi-resolution Signal Decomposition (MSD), Newton’s Forward Interpolation, Saturation, Wavelet Transform (WT)
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