Replacement power through battery storage in case of power failure

In the main application, the battery storage system optimises the self-consumption of a mountain house with two PV systems. However, as power outages occur four to five times a month in this region due to trees falling on the overhead power lines supplying the power, a local three-phase backup power grid is set up by the INTILION | scalebloc storage system in the event of a grid failure. In this way, power interruptions are avoided.

In this project, an additive control of the battery storage system is used to constantly detect a possible grid failure. Should this occur, the customer’s grid is disconnected from the public grid and the INTILION | scalebloc subsequently sets up a three-phase backup power grid. The switching time from detection of the grid failure to disconnection and earthing to the complete establishment of the standby grid is only 13 seconds. When the grid returns, the system synchronises automatically and without interruption back to the public grid, switches to the main application and optimises the mountain house’s own consumption.

In addition to supplying the consumers with backup power, the battery storage regulates the existing PV systems using Frequency Shift Power Control (FSPC). This prevents overcharging of the system.

This project shows that a battery storage system will be an important component for rapid supply security in the future in the event of power outages.