The classification of solar photovoltaic power generation system:
Current solar photovoltaic system can be divided into three categories, off-grid solar power storage systems, photovoltaic power generation system and the first two hybrid system.
A) off-grid solar power storage system. This is a common way of solar energy applications. At home and abroad has been used for several years. System is relatively simple and wide adaptability. Because of its larger size range of types of batteries and maintenance difficulties limit the scope of use.
B) grid-connected PV system, when the electricity load is high, solar power is low to buy electricity from the mains. While the load is small, or could ever use electricity when you can sell excess electricity mains. Under the premise of the grid in the back, the system eliminating the need for batteries, which expanded the scope and flexibility, and reduce the cost.
C) A, B two hybrid system, which is between between the two systems. The program has a strong adaptability, for example, according to peak power grid power tariffs to adjust its strategy. But the cost and operating costs than the high of the two programs
1, adequate cleanliness. (If using the battery program, to consider the handling of used batteries)
2, absolute security. (grid voltage is usually 220V or less)
3, relatively extensive.
4, the exact nature of long life and maintenance-free.
5, the initial practical.
6, the adequacy of resources and potential of the economy and so on.
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