SUBSTATION BIPOLAR m-BRANCHED DC POWER TRANSMISSION LINE Russian patent published in 2016 - IPC H02M7/08 

FIELD: electricity.

SUBSTANCE: to network 1 2mn converter units 2 are connected. In each branch converting bridges are connected to network through transformer with electric shift of input voltages for 60/n (n>1) electric degrees, where n is number of half-circuit bridges (n>1). Half-circuits are broken by pairs, in each pair contains branches of different poles and one half-circuit transformers provide shift voltages at angle 30/n electric degrees relative to voltage transformers of second half-circuit, middle point of half-circuits is connected to grounding circuit via remote line. Transformers of any subsequent branch provide shift voltages at angle 30/mn electric degrees relative to voltage transformers of previous branch. Blocks contain switches 3, transformers 4, converting bridges 5.

EFFECT: reduction of noise and energy losses, higher reliability.

1 cl, 2 dwg