METHOD FOR OPERATING AN ENERGY SUPPLY SYSTEM, DEVICE FOR EXCHANGING ELECTRICAL POWER IN AN ENERGY SUPPLY SYSTEM, AND ENERGY SUPPLY SYSTEM

The disclosure relates to a method for operating an energy supply system, wherein a first and a second DC unit exchange power with an AC bus using a first and a second power converter. With transmission using a transformer, this power is combined and converted using a third power converter into a DC grid power of a DC grid and/or vice versa.