A Study On On-line Monitoring System Of Power Quality

With the development of society, power quality is paid more and more attention. Power quality depends on power stations, transmission departments, power supply departments and electricity users. Power quality also influences their interests. The on-line monitoring of power quality has become an inexorable trend. We offer a design plan of the on-line monitoring system of power quality in order that electric power departments can master power quality timely and accurately and assess the power quality of power grid properly. The system is based on computer technology, virtual instrument technology and net communication technology. Net communication is supported by Modem and Ethernet and by integrating monitoring stations in the power grid, achieves on-line monitoring system of power quality and guarantees real-time and reliable transmission of data. The system is composed of data monitoring sub-system, communication sub-system and server sub-system. The system has been tested and applied in the power industry to monitor power quality.