Global solar will tell you from the solar power six metres of solar energy

General solar power systems are divided into off-grid ( Independent) System, interconnection system and mixed system, when a user choose to install solar photovoltaic power generation systems, you must first confirm the off-grid power generation or connected to the grid, the three functions are different, the system of

generally divided into off-grid solar power system ( Independent) System, grid system and mixed system. When a user choose to install solar photovoltaic power generation systems, they must first confirm that is the use of off-grid power generation or connected to the grid. The function of the three systems, system components and equipment, cost also is very different. But for the average person, they still don't know from the difference between network and Internet, and hybrid. First of all, it is also known as off-grid solar power system independent photovoltaic power generation system, independent of the power grid, run independently. It is mainly composed of solar panels, storage batteries, charge and discharge controller, inverter and other parts. Solar panels generate electricity directly into the battery and storage. When electrical need power supply, battery dc into 220 v alternating current by inverter, it is a repeated charge and discharge cycle. Due to the power system is not subject to regional restriction, widely used and can only be installed in a sunny place to use, very suitable for no power grid, a lonely island, fishing boat, such as outdoor breeding base in remote areas. , also can be used as a frequent power outages areas of emergency power generation equipment. This system must be equipped with battery, and 30 - of the cost of power generation systems 50%. In addition, the service life of the battery is commonly 3 - After 5 years, need to change, further increase the using cost. Economically, however, it is difficult to be widely promotion and use, thus not suitable for use in power convenient place. But for no power or often in areas of family, this is also very practical. In particular, the DC energy saving lamps can be simply used to solve the problem of power failure of lighting, very practical. Therefore, off-grid power generation system is specially designed for no power or often in place. Second, solar power system for grid interconnection means must be connected to the public grid, namely, solar photovoltaic power generation, family power and public power grid connection together, this is a must rely on the existing power grid operation of power systems. It is mainly composed of solar panels and inverter. Solar panels by 220 v ac inverter directly, for household appliances power supply. When the solar energy to produce electricity than household appliances use electricity, extra power is transmitted to the public grid. However, when the solar power can't meet the needs of household electrical appliances, it will be automatically added from the grid. The whole process is intelligent control, do not need to manually open or close. This system can greatly save the cost, because it can avoid using battery. In particular, the state grid has issued this year three new policy about solar energy and other new energy interconnection, make clear a regulation to allow free access to the power grid, surplus electricity can be sold to electric power company. From the perspective of long-term investment, in a few years to recover costs and profits are possible. So, if you want to save electricity and power supply convenient, you should choose grid solar photovoltaic power generation system, which is the mainstream of the current or future way. Grid, however, also has its disadvantages, namely when the public power is cut off, solar photovoltaic power generation can not run. Third, it is a hybrid solar photovoltaic power generation system between the above two methods of the system. Such as strong adaptability, can adjust the power according to the power grid peak valley price strategy. But its costs and operating costs are higher than the above two options.