Normally a powerline with 2 three-phase AC system looks like this
however in some cases one would build two lines each carrying one circuit ( 3 conductors).
But the 330 kV-powerline Donbass-Dnepr in Ukraine was built in a very unconventional matter: it consists of three paralell lines, whereby each pylon carries 2 conductors.
330 kV-Powerline Donbass-Dnepr. No pylon carries a whole three phase AC-system. On the line in the middle, one conductor of each system is installed.
Interestingly, this line, which was built in 1964 is under reconstruction. And what is the most estonishing thing, it is reconstructed in the old way.
What advantage may this type of line have? I see no, as if a pylon of the line in the middle is destroyed both circuits are affected, so there is no redundance. And the required right of way is larger than that required for a single line with 6 or 2 lines with 3 conductors.
Do you know other lines built in this way?
Linear Mode
