A power quality monitoring system for real-time fault detection

This paper proposes an embedded system applied for power quality monitoring that captures waveform of fault signal on single phase or 3-phases system in real time and allows users to control and receive data from remote module via Ethernet networks by using TCP/IP protocol. The power quality monitoring system stored fault data in CSV (comma separated value) format into SD-CARD which are easy to analyze later by spread sheet program. The monitoring system uses the energy measurement integrated circuit (IC) ADE7758 with integrated power quality monitoring features, AL440B FIFO (first-in first-out) memory, LPC2368 microcontroller and ADUC7024 microcontroller. The monitoring system can detect sags, swell and interruptions in power lines and stored fault data when fault signals detected.