>>106269739
Those are for low tension lines, the large power lines are high tension lines, the wire is higher strength and does not easily cut.
I think though this tool would work if you modify it with a way to hang onto the wire and then introduce the blade to it in a controlled way. It will eventually cut enough that it snaps. But it might also destroy the drone because the snapping force will be huge and might pull a lot on the hanging bit.
Maybe with luck you can cut just deep enough it doesn't snap until the heat of the day and the wires grow a bit weaker or from heavier loads put on them