Rural Low Voltage Power Quality Monitoring System Design

Along with the rapid development of technology and national economy, the demands of electric energy largely increase, correspondingly the power quality becomes more and more important and close attention is increasingly paid to power quality by both electric industry and consumers.Firstly, introduce the meaning and contents of power quality, the reason of paying attentin to power quality, and analyze some problems of power quality. Discuss the necessity of power quality monitoring, as well as the present situation and the new trend of power quality monitoring.Secondly, investigate the feature of rural low voltage network and summarize the basic principle about selecting monitoring spots. Expand the power quality indexes and add a new index of dependable power supply into monitoring range. Find a PQM system which is suit to this paper after using for some references, as well as introduce it's hardware and data management.Thirdly, this thesis proposes a program of PQM distributed system applying to rural low voltag network, and introduce this system's hardware, data management, communication ways separately.Lastly, combining with actuality this thesis plan tow programs ,and prove the practicality and feasibility about this program.