Development of power quality detection system based on HHT
Wanlu Sun · Power System Protection and Control · 2011
The development of power system disturbance signal detection device is the most important issue to detect and improve the power quality. Based on Hilbert-Huang Transform,a power quality detection system is developed. The hardware consists of signal conditioning circuit and data acquisition circuit, and realizes signal acquisition. The software is developed by Matlab’s GUIDE. It realizes data storage,HHT analysis and waveform display. The system contains two detections modes,namely the PSCAD/EMTDC simulation model detection mode and the measured data detection mode. The power quality data collected from the simulation model and data measured from the electrified railway are detected respectively. The results show that the system can detect the transient disturbance signal accurately,and analyze the harmonic components effectively.