Study On The Control Strategy For Photovoltaic System Of Microgrid

With economic development and social progress,people's demand for electricity is growing.Over the past few decades,power supply depended on centralized power supply system.However,it is more and more difficult to meet the requirements for safety and reliability of power supply,because of its high running costs and difficulty.At the same time,power generation resulted in depletion of traditional fossil energy and triggered a series of environmental problems.Therefore,using of renewable energy to replace traditional fossil fuels is the main problem.Solar energy is clean and inexhaustible,and it is suitable to distributed generation.The microgrid is a kind of independent distributed generation network.It can overcome many disadvantages of photovoltaic power generation,such as randomness,volatility,and low-density.It can be constructed close to the local load,and long-distance high-voltage or high voltage transmission is not required in the microgrid system,which can reduce line losses,and save construction investment and operating costs.Therefore,the meaning of the research on micro-grid photovoltaic systems technology is significant.In this paper,the current development of the research on micro-grid and photovoltaic systems both at home and abroad were introduced.Then the paper introduced the structure and principle of photovoltaic systems.Later this paper analyzed the control method of maximum power point tracking.Finally,the simulation was carried out.