Explore and realize the transformer protection principle based on wavelet transform
|Course||Proceedings of the|
|Keywords||Wavelet Transform Transformer protection Magnetizing inrush|
Wavelet Transform analysis methods developed rapidly in recent years , with the multi-scale analysis and time - frequency localization characteristics , especially suitable for the edge and peak mutations in signal processing and feature extraction . The wavelet transform is applied to the identification of magnetizing inrush current , are discussed in detail using wavelet transform to distinguish between magnetizing inrush and fault current , proposed two comparison applicable to practical engineering methods . Combined with the latest 32-bit MCU , DSP chips and real-time multitasking operating system , and put forward a set of state-of-the-art protection programs can achieve the rapid identification of the inrush current of the transformer differential protection action more quickly and reliably .