Research On Real Time Monitoring System Of Power Quality Based On Wireless Data Acquisition And Transmission

With the continuous increase of the electricity consumption in the society,the requirement of the power quality is becoming higher and higher.Therefore,the real-time monitoring and on-line analysis of power quality has become an important work for the electric power supervision department.At present,in order to monitor the quality of electric power,the data of electronic power quality must be collected in the facilities site of electrical substation firstly and then fed into the existing electric power monitoring network through the traditional wired communication system.The disadvantage is that it is limited by the distributed configuration of existing electrical facilities,the investment is large and the maintenance cost is high.Therefore,it is necessary to develop a power quality monitoring system based on wireless data acquisition and relay transmission.In this thesis,the development of the electric power quality monitoring system is introduced and we analyzed the disadvantages of current power system in power quality online monitoring,that is the lack of real-time property,weak of information security,large investment,high maintenance costs and so on.The main content of this paper is to establish a remote wireless real-time data acquisition and transmission system for the electric power quality and proposed a wireless communication protocol as well as a real-time data relay cache manage method under the condition of coexisting of heterogeneous wireless network for electric power quality data.By employing the wireless digital radio,both the transmission of data and classification cache of data are realized which between the real-time acquisition terminal and the front-end terminal.The efficiency of the proposed system is verified by the experiments of electric power quality data acquisition and relay wireless transmission which are carried out by the State radio inspection center of Shenzhen and Shanghai electric power co.The experiment results show that,the remote wireless data acquisition and transmission system can realize the on-line monitoring and analysis of power quality data,...