Complex networks Convolution Convolutional neural network Convolutional neural networks Electric loads Electrical disturbances Fourier transforms Frequency domain analysis Low voltages Machine learning Machine learning methods Multi-valued Multilayer neural network with multivalued neuron Multilayer neural networks Neurons On-machines Power quality Power-quality analysis Short time Fourier transforms Voltage waveforms convolutional neural networks electrical disturbances multilayer neural networks with multivalued neurons power quality short-time Fourier transform