The Remote Monitoring System Design Of Photovoltaic Power Station

The emergence of global energy crisis prompted countries start to development renewable energy actively. Countries increase investment in the solar research in recent years and it make solar photovoltaic power generation technology has been widely applied and rapidly development.1983 world photovoltaic module production of＄21.3 MW, mainly crystalline silicon solar battery, pv industry expose prototypes. In 1990, the energy into the computer and global warming, under pressure from renewable energy more attention, the global solar pv industry high-speed growth. To the 2004 world solar battery has already surpassed the 1200MW production. Meanwhile new technique appears to make solar cells from production cost greatly decreased, the world's 1950s 1785 dollars/tile, reduced to now 2-3 dollars/watts.Nowadays, the total installation capacity of the PV systems in the world has gone beyond 15GW. It is predicted that the growth rate will reach 42.2% and the installation capacity will transcend 20.2 GW in 2011.There are a lot of manage work that we have to do after so many PV systems established. On the one hand, the PV systems are designed to run without being supervised by the people; on the other hand, the PV systems always be established in the remote area, so it is very hard and difficult task to monitor and maintain them. If we can use the remote monitor and control technology in the PV system management, then the separated and widely distributed PV systems could be connected and real-time supervised. Therefore, it is very important to do some studying on the application of the remote monitor and control technology in PV systems.At the beginning of this paper, the significance of the photovoltaic and the present status of the PV industry at home and abroad are briefly introduced, as well as the development and application of the remote monitor and control technology. Then, the composition of the PV system and the application of the remote monitor and control technology in the PV system are expanded. At the same time, paper puts forward a remote monitoring system design of PV system, and in which the 485 bus will be used. The remote monitoring system is expatiated from two aspects, the hardware design and software design. In appendix part we give some reference programs. Finally, the designing work of the whole monitoring system was summarized and some further word was discussed:1) In the current system architecture, not to mention the acquisition of sunlight irradiation degrees, so will require further study of irradiance sunlight or acquisition method with acquisition related equipment use method, and on this basis to further improve the system architecture.2) Perfect PC communications software, including the increased the function of the lower level computer remote control command, increase the statistical analysis of historical data on functions, including the annual generation capacity, statistical and graphically, etc.), increase historical data backup function, increase error handling, and other functions, strive for PC software functions to be more perfect, use rise more agile and convenient, but also have higher reliability.3) With plenty of photovoltaic power station, construction and application to the same region were scattered photovoltaic power station centralized monitoring has become the hot current research, and hope in the finish on the basis of above two work to disperse photovoltaic power station centralized monitoring and management of more in-depth research, behind the further improvement of hardware and software to provide theoretical support.