Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title Arc Detection Performance and Processing Speed Improvement of Discrete Wavelet Transform Algorithm for Photovoltaic Series Arc Fault Detector
Authors Chan-Gi Cho ; Jae-Beom Ahn ; Jin-Han Lee ; Ki-Duk Lee ; Jin Lee ; Hong-Jae Ryoo
DOI 10.6113/TKPE.2021.26.1.32
Page pp.32-37
ISSN 1229-2214
Keywords Photovoltaic system; DC series arc fault; DWT (Discrete Wavelet Transform); FFT (Fast Fourier Transform); AFD (Arc Fault Detector)
Abstract This study proposes a DC series arc fault detector using a frequency analysis method called the discrete wavelet transform (DWT), in which the processing speed of the DWT algorithm is improved effectively. The processing time can be shortened because of the time characteristic of the DWT result. The performance of the developed DC series arc fault detector for a large photovoltaic system is verified with various DC series arc generation conditions. Successful DC series arc detection and improved calculation time were both demonstrated through the measured actual arc experimental result.