View Status for UPS Participation as Distributed Energy Resource (DER)

A UPS system that includes a battery has the possibility to operate as a distributed energy resource (DER) by using energy from the battery instead of from the power grid to supply the load. An external system can request the UPS to transfer from double conversion operation to battery operation when a frequency drop is detected on the grid. This will reduce the load on the grid corresponding to the load on the UPS output and support to stabilize the power grid frequency. When the support duration is over, the external system will end the request and the UPS will transfer back to double conversion operation and ramp in the load to the power grid. The UPS system must be installed in an fast frequency reserve (FFR) setup to participate as DER. FFR is only available in limited power grids as per national rules.

DER participation conditions for the UPS:

• DER mode is enabled for the UPS.

• The input contact for Genset is supplying the UPS is not active/triggered.

• The battery is operable.

• The UPS operation mode is inverter operation or eConversion/ECO mode.

• The battery state of charge (SoC) is above the configured minimum level.

• The UPS output is not overloaded.

• The communication link with the external controller is active.

• A participation allowed command from the external controller is active.

• Input contact timeout has not occurred.