Design And Implementation Of The Distributed Grid-connected Photovoltaic Power Generation Remote Monitoring And Control System

As the improving of human’s living standards,human beings require a better living environment and energy supply. Looking for new clean energy is imminent with the depletion of fossil fuels and increasingly serious environmental problems. The inexhaustible solar energy is considered to be one of the effective ways to solve the energy and environmental conflicts. Solar photovoltaic power generation has been the world’s attention and favor because it almost does not pollute the environment.China is the largest producer of solar photovoltaic modules,but we exported over 90 percent of the gross product, did less work of the photovoltaic power research and application. Resulting in a incomplete industrial chain. According to "The solar power development’twelfth five-year’plan" issued by the National Energy Administration, China will vigorously develop photovoltaic power generation during the "Twelfth Five-Year" period. Photovoltaic applications ushered in the "spring". With distributed generation and smart grid has become a hot topic, single large Grid operation mode has been unable to meet human’s requirements for power quality, it will become a trend that the grid working together with distributed power. Distributed photovoltaic system will become the main development direction of solar applications.It will bring impact and influence on the grid that large number of distributed photovoltaic systems connected to the grid. Developed countries has been in a leading position in distributed PV. Our country start late and the research and technology of the Distributed PV falls behind. Distributed PV system can not only work connect with the grid, but also to run independently of each other to avoid causing large area power outages. In order to study the impact of distributed PV systems on the grid, we build a set of distributed PV models in the Modern Physics Teaching Center Of Shanxi University. We have also designed a distributed grid-connected photovoltaic power generation remote monitoring and control system, based on microcontroller chip STC12C5A60S2 and power chip CS5463. Users can view the system status at different terminals, and remote control systems and grid connection status, clipping at peak load. The Bi-directional KWH Meter accurately measure bi-directional power,active power, reactive power, power factor, apparent power, harmonic active power, fundamental active power, fundamental reactive Power And other information. The system can be used as teaching instruments for teaching students the knowledge of PV and distributed power, at the same time, it records and provide the operate data for the smart grid research.