With the rapid development of new electric load, the power quality of power supply system put forward higher requirements. For the problem of the multi-disturbance complex power quality signal, the paper presents a multi-disturbance complex power quality signal HHT detection method, using Hilbert-Huang transform (HHT) time-frequency analysis on the multi-disturbance complex power quality signal. This paper introduced the basic principle of HHT; put forward to use HHT method to achieve the complex power quality signal detection; analysed of the superiority of HHT in the complex power quality si...
