Patent ID: 9673620
Date: 2017-06-06
CPC Classifications: H02J

Claim:
1. An energy supply network comprising: a first coupling device, the first coupling device being configured to electrically couple the energy supply network to an external energy source; a first high voltage direct current, HVDC, segment, the first HVDC segment being coupled to the first coupling device; a second HVDC segment, the second HVDC segment being coupled to the first coupling device, wherein the first HVDC segment and the second HVDC segment are configured to supply electric energy to electric loads of different power levels, a voltage transforming device, the voltage transforming device being coupled between the first coupling device and the second HVDC segment, wherein the voltage transforming device comprises a transformer, the transformer comprising a primary winding coupled to the second HVDC segment and a secondary winding coupled to the first coupling device.