| 摘要 |
<p>A high power high voltage transmission system consists of three high voltage cables (12, 13, 14) which are suspended from a transmission tower (10) in insulated relationship with one another and with respect to the ground (11). Each of the cables are shown as gas-insulated cables having a central high voltage conductor (40, 41, 42) and an outer conductive housing (43, 44, 45) which is insulated from the central conductor (40, 41, 42). The line-to-line voltage of the central conductors (40, 42) of each of the high voltages cables (12, 13, 14) is 765 kV while the potential between the outer conductive housings (43, 44, 45) of each of the cables (12, 13, 14) is 345 kV. The total right of way and height of the support tower (10) is that needed for a conventional 345 kV transmission system even though the system is used to transmit 765 kV line-to-line voltage. </p> |
