This paper has proposed a power quality monitoring system on the detection of power disturbance in real-time by using an embedded system. It can be controlled and monitored by its function via Ethernet network. This system has been developed to monitor and detect any disturbance signals in power lines. If any phase in the power lines has disturbance, the monitoring system will store the fault data into the chosen memory card. This developed system can allow users to control and receive data from the remote hardware via Ethernet network by using UDP and TCP/IP protocol. To transfer the disturbance file that has been stored in the memory card to PC, the embedded TFTP server is applied in this step. There are some advantages of using the developed application software: it can control the power quality monitoring hardware which being installed at the remote sites; can display the detected fault data in the waveform; and also can connect to the various number of the monitoring hardware.
Key words: Power quality, UDP, TCP/IP, TFTP, ethernet network.
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