A Power Quality Monitoring System over the Internet

Online power quality monitoring system is the development of the Internet as a vehicle for the use of electronic information and communication technologies to provide and support power quality monitoring when distance separates the different sites and data center. Current power quality monitoring applications are usually developed for remote power quality inspecting and analyzing. It is possible for engineers to diagnose the faults and evaluate power quality at the data center via Internet. In this paper, we developed a Internet-based power quality monitoring system, mainly including the following aspects: GPS technology to synchronize sampling data in the power quality meter, foundation of network platforms with Win2003 Server/IIS, application of power quality database using Microsoft SQL, site client software to collect, store and compress the power quality data from the power quality meters and investigator client software to analyze and calculate relevant power quality parameters. This system can provide assurance to power system security.