2022-11-29
Photovoltaic power generation is different from traditional power, which is related to its output wattage and solar illuminate, with more uncontrollable factors. In order to improve the photovoltaic application capacity and reduce the waste, we can install the energy storage system for photovoltaic. In this way, the PV system could stored excess photovoltaic energy. The photovoltaic power station can solve the power supply imbalance problem in the PV system to meet the normal work if it is connected to the grid.
The battery is one of the most important compositions in the photovoltaic energy storage system. When customer chose the battery, they should consider the battery performance. Not only the voltage and capacity of the battery should be considered, but also the use environment of the battery, the charge and discharge current, the depth of discharge and so on.
According to the different application scenarios, the photovoltaic energy storage system can be divided into off-grid energy storage, hybrid energy storage and so on.
When it isn’t allowed to feed back the electricity to the grid or the electricity price is difference since local off-peak and peak, off-grid solar energy storage systems can provide the better solutions. When solar power generation is greater than the load demand, one part of photovoltaic energy will povide to the load, and the others energy will charge battery. On the contrary, when the solar power generation is less than the load demand, the battery will discharge and support the load power, to improve the power supply reliability.
As the hybrid energy storage system, one part of the photovoltaic power will be used by the load, and one part of the electricity will charge the battery, the others electricity will feed back to the grid under the permission of the national grid.
Each pattern of photovoltaic energy storage system has its own advantages, we ought to choose the right solution according to the actual situation.
