The advantage of solar photovoltaic power generation is that it is less restricted by geographical location because the sun shines on the earth; the photovoltaic system is also safe and reliable, noise-free, low-pollution, can generate electricity and supply power on site without consuming fuel and setting up transmission lines, and has a short construction period.
Classification of Solar Photovoltaic Power Generation System
Solar photovoltaic systems are divided into off-grid photovoltaic power generation systems, grid-connected photovoltaic power generation systems and distributed photovoltaic power generation systems:
1. Off-grid photovoltaic power generation system. It is mainly composed of solar cell modules, controllers, and batteries. If it is to supply power to AC loads, it is also necessary to configure an AC inverter.
2. The grid-connected photovoltaic power generation system is that the DC power generated by the solar module is converted into AC power that meets the requirements of the municipal power grid through a grid-connected inverter, and then directly connected to the public power grid. The grid-connected power generation system has centralized large-scale grid-connected power stations, which are generally national-level power stations. The main feature is that the generated energy is directly transmitted to the power grid, and the power grid is uniformly allocated to supply power to users. However, this type of power station has large investment, long construction period, and large land area, and has not yet developed much. Distributed small-scale grid-connected power generation systems, especially photovoltaic building integrated power generation systems, are the mainstream of grid-connected power generation due to their advantages such as small investment, fast construction, small footprint, and strong policy support.
3. Distributed photovoltaic power generation system, also known as distributed power generation or distributed energy supply, refers to a smaller photovoltaic power generation system configured at the user site or near the power consumption site to meet the needs of specific users, support the economic operation of the existing distribution network, or meet both requirements at the same time.