REVERSING TRANSMISSION OF DIRECT CURRENT THROUGH SUPERCONDUCTIVE CABLE LINE Russian patent published in 2015 - IPC H02J1/00 

FIELD: electricity.

SUBSTANCE: terminal converting substations (1) and (2) with control systems (3) and (4) are coupled by double-wire superconductive cable line (5). At the line ends there are direct voltage sensors (6) and (7). In the direct-current transmission circuit there is introduced unit (8) for comparing their readings and bidirectional switches (9) and (10) switched on between ends of the line (5) at substations (1) and (2). The unit (8) is coupled with galvanic isolation by its inputs to outputs of sensors (6) and (7), and by its output to inputs of control systems (3) and (4) of substations (1) and (2) and to control inputs of bidirectional switches (9) and (10).

EFFECT: reducing risk of damage for high-temperature superconductive cable line operating as a part of reversing direct current transmission system when high-temperature superconductive cable is out of superconductive state.

1 dwg