Overview Photovoltaic power station refers to a photovoltaic power generation system that uses solar energy and uses special materials such as crystalline silicon panels, inverters and other electronic components to connect to the grid and transmit electricity to the grid. Photovoltaic power station is a green power development energy project that is the most encouraged by the state. It can be divided into an independent power generation system with a battery and a grid-connected power generation system without a battery. Solar power generation is divided into photothermal power generation and photovoltaic power generation. At present, the commercialized solar energy refers to solar photovoltaic power generation. Photovoltaic power generation products are mainly used in three major aspects: one is to provide power for occasions without electricity; the other is solar daily electronic products, such as various solar chargers, solar street lights and solar lawn lamps; the third is grid-connected power generation, This has been widely implemented in developed countries. Principle Photovoltaic power generation is a technology that directly converts light energy into electrical energy by utilizing the photovoltaic effect of the semiconductor interface. The key element of this technology is the solar cell. After the solar cells are connected in series, they can be packaged and protected to form a large-area solar cell module, and then combined with power controllers and other components to form a photovoltaic power generation device. The solar photovoltaic module converts direct sunlight into direct current, and the photovoltaic strings are connected in parallel to the DC power distribution cabinet through the DC combiner box. into the AC power distribution cabinet, and directly into the user side through the AC power distribution cabinet. Advantage 1. High return on investment The output power is relatively small, and the return on investment is not low. Generally, the capacity of a single distributed photovoltaic power generation system project ranges from several kilowatts to several hundred kilowatts. The capacity of the photovoltaic power generation system has little influence on the power generation efficiency, so the impact on its economy is also small. That is to say, the investment rate of return of the small photovoltaic power generation system is not lower than that of the large photovoltaic power station. 2. Does not occupy land resources Distributed photovoltaic power generation basically does not occupy land resources, can make full use of the surface of the building, can generate electricity and supply power nearby, without or less use of transmission lines, reducing the cost of power transmission. Photovoltaic modules can also directly replace traditional wall and roof construction materials. 3. Outstanding environmental benefits The pollution is small, the environment is friendly, and the environmental protection benefits are outstanding. In the process of power generation, the distributed photovoltaic power generation system does not consume fuel, does not emit any substances including greenhouse gases, has no noise, and does not pollute the air and water. 4. Relieve electricity tension The distributed photovoltaic power generation system is connected to the distribution network, and the power generation and electricity coexist, and the power generation is in the peak period of the grid power supply, which can effectively play the role of peak leveling, reduce the expensive peak power supply load in the city, and alleviate the problem to a certain extent. Electricity shortage in local areas. 5. Flexible operation The distributed photovoltaic power generation system has an effective interface with smart grids and microgrids, and operates flexibly. Under appropriate conditions, it can also realize local off-grid power supply operation. Distributed photovoltaic power generation advocates the principle of nearby power generation, nearby grid connection, nearby conversion, and nearby use, which can not only effectively increase the power generation of photovoltaic power stations of the same scale, but also effectively solve the problem of power loss in boosting and long-distance transportation. Its high energy utilization rate and flexible construction methods will become the main direction of photovoltaic applications in my country. At present, the most widely used distributed photovoltaic power generation system is a photovoltaic power generation project built on the roofs of various buildings, agricultural facilities and family residences. The requirements for the application of these projects are that they must be connected to the public power grid, or together with the public power grid, to supply power to nearby users.