Design And Implementation Of Power Parameters Monitoring And Transmission Systems

In the context of growth of market economy and the success of power grids, people have paid more attention on research of digital energy meter with high performance and requirement. The development of computer technology and wireless transmission technology has made it possible for normal energy meter transformed into multifuncional、high-accuracy、high reliable and portable monitor system with wireless transmission. Depending on the above, my paper has done the research of the monitor of electrical power parameters.The paper puts forward a new solution, a wireless monitor system for power parameters, based on study of the current demand and monitor technology of the power parameters. The combination of SOPC technology and the wireless transmission makes the design unique. With the technology of NiosII IP core design, the paper has made the requested processor and related peripheral circuit successfully, which can measure parameters and transport the results in real time, such as voltage、current、power、frequency、harmonic.At the very beginning of the paper, it’s the introduction of the background and the significance of the paper, and the related research at home and aboard. Then the paper shows the theory of the power parameters calculation and the SOPC technology.The design and realization of the software and the hardware for the system is the key of the paper. The hardware part is based on the FPGA technology, peripheral circuit and internal configuration circuit included. The FPGA peripheral circuit consists of signal conditioning and AD73360data acquisition circuit、CC2530wireless communication circuit、LCD liquid crystal display circuit、PCF8563RTC circuit、power circuit and so on. The design of internal configuration circuit has focused on AD73360data acquisition IP core、CC2530wireless communication IP core with DMA mode. The design of NiosII processor and other functional peripherals in SOPC Builder is also shown in the paper.The software consists of software system on lower computer and software program on upper computer. The main part of system on lower computer can be considered as four tasks:sampling data storage task、electric parameter measurement task、power parameter display task、power parameter data transmission task. The design of every task and the whole system work flow are shown in the paper. The program on upper computer is programmed in the Visual Studio2010, based on the serial communication technology. It can show the results in real time and control the transmission process.At last, it’s the test results and the comparative analysis to confirm the system high-accuracy and reliable. The following part after that are the summary of the design and the prospect.