As a kid, one of my friends was flying a long-tailed mylar dragon kite and… well, you know what happened. The police came and said it even affected their station power a couple miles away! The arc buzzing sound was really loud, and the spark and...
At 200 ft you will not damage your electronics but it is risky! I have flown within them with no problems, until I touched the wire with the Drone..
200' is what the power companies consider safe, so I will go with that distance. PG&E recommends...
I did the same thing years ago with a Phantom 4 and the power line took out my GPS and the drone flew out of control for over half a mile before crashing to the ground in a cemetery.