A real-time power quality events recognition using variational mode decomposition and online-sequential extreme learning machine

In this paper, variational mode decomposition (VMD) and online-sequential extreme learning machine (OSELM) are integrated to detect and classify power quality events (PQEs) in real-time. Empirical Wavelet transform (EWT), empirical mode decomposition (EMD) and variational mode decomposition (VMD) are used to decompose the non-stationary power quality (PQ) signals into intrinsic mode functions (IMFs) or band-limited mode of oscillations. Four...