High tension power lines are like magnets - they attract model aircraft. The field I learned to fly at had high tension lines just over 1/4 mile away so I was taught early on to keep away from them. I saw several guys who didn't heed that advise and provided lunch to those lines. But this was also in the days of AM and some guys where still flying reeds. Best bet is to just stay as far away from them as possible.

High tension lines will win the battle and war every time.

Hogflyer