The principles of industrial and commercial energy storage mainly include the following stages:
Charging stage: During periods of sufficient power supply or low electricity prices, the system converts electrical energy into chemical energy and stores it in the battery through charging equipment. This process uses the battery management system (BMS) to monitor the status of the battery in real time, including the state of charge (SOC), state of health (SOH) and temperature, to ensure that the battery works efficiently and safely.
Storage stage: The storage medium can be various types of batteries (such as lithium-ion batteries, lead-acid batteries, sodium-sulfur batteries, etc.), flywheels, compressed air energy storage, pumped storage, supercapacitors or thermal energy storage systems. These media maintain stable storage of electrical energy during the energy storage process, waiting for future use.
Discharging stage: During periods of peak power demand or high electricity prices, the system converts the stored chemical energy into electrical energy through discharge equipment and releases it to the grid. This process discharges to the load on the same bus through the AC bus.
Intelligent Management: The energy storage system is equipped with a battery management system (BMS) to monitor the battery status in real time and ensure that the battery works efficiently and safely. In addition, the advanced energy management system (EMS) is used to monitor, dispatch and optimize the energy storage system in real time to ensure that the system can achieve economic benefits while meeting power demand.