Pure off-grid energy storage
Operation mode: SUB, SBU and UTI three common operation modes
The electricity bill is particularly expensive in a certain place, so in order to save the electricity bill, the SBU (photovoltaic priority mode) is usually selected, which gives priority to the photovoltaic load; when the photovoltaic energy is insufficient, the battery discharge is enabled; when the battery energy is insufficient, the utility power is finally enabled.
If the mains power in a certain area is unstable, and the user needs to guarantee the battery backup time, the SUB mode is usually selected. The photovoltaic load is given priority and when the photovoltaic energy is insufficient, the utility power supplement is enabled. When the utility power is insufficient, we can use the battery charging.
In the season of insufficient light, UTI is generally aimed at scenes with weak photovoltaics.
During the day, the mains is loaded, and the photovoltaic energy only charges the battery. At the same time, you can set the time period when the mains price is lower to charge the battery. When the mains is short of power, the battery can be discharged to ensure energy supply.
Hybrid energy storage
The hybrid energy storage operation mode is different from pure off-grid energy storage. The most common mode is load priority, and the photovoltaic energy will give priority to the excess energy to charge the battery. When the photovoltaic energy is insufficient, the battery will be supplemented, and the mains will be used after the battery is low. In this mode, the photovoltaic system is given priority to achieve self-generation and self-use, and at the same time, electricity costs can be saved to the greatest extent.
The second mode is battery priority, that is, the photovoltaic energy will give priority to charging the battery with residual power, and when the photovoltaic energy is insufficient, the mains will be activated. Simply put, it is to ensure that the battery is fully charged first. This mode is mostly used in areas with unstable mains. They need to keep the battery charged all the time.
The last common mode is the mains mode, which is also the most different operating mode between hybrid energy storage and pure off-grid energy storage. It is the photovoltaic energy load priority, the surplus electricity is connected to the grid, and the battery is replenished last when the photovoltaic energy is insufficient. Mains power is enabled. This model can maximize the profit