Solar photovoltaic power stations are divided into off grid (independent) systems and grid connected systems. When users choose to install solar photovoltaic power stations, they must first confirm whether to use off grid solar photovoltaic systems or grid connected solar photovoltaic systems. The purposes of the two are different, the constituent equipment is different, and of course, the cost is also very different. Today, I mainly talk about the off grid solar power generation system.
Off grid solar photovoltaic power station, also known as independent photovoltaic power station, is a system that operates independently of the power grid. It is mainly composed of photovoltaic solar power panels, energy storage batteries, charge and discharge controllers, inverters and other components. The electricity generated by photovoltaic solar panels flows directly into the battery and is stored. When it is necessary to supply power to appliances, the DC current in the battery is converted into 220V AC through the inverter, which is a repeated cycle of charge and discharge process.
This kind of photovoltaic solar power station is widely used without geographical restrictions. It can be installed and used wherever there is sunlight. Therefore, it is very suitable for remote areas without power grids, isolated islands, fishing boats, outdoor breeding bases, etc. it can also be used as emergency power generation equipment in areas with frequent power outages.
Off grid photovoltaic solar power stations must be equipped with batteries, accounting for 30-50% of the cost of the power generation system. And the service life of the battery is generally 3-5 years, and then it has to be replaced, which increases the use cost. In terms of economy, it is difficult to promote and use in a wide range, so it is not suitable for use in places where electricity is convenient.
However, for families in areas without power grids or areas with frequent power outages, off grid solar power generation has strong practicality. In particular, in order to solve the lighting problem in case of power failure, DC energy-saving lamps can be used, which is very convenient. Therefore, in most cases, off grid photovoltaic solar energy is used in areas without power grids or areas with frequent power outages.
Post time: Nov-24-2022