i was operating my Mavic Pro today over railroad tracks trying to get a cool POV shot. I was in pretty close proximity to power lines and upon take off the aircraft continued to gain altitude, even with input from controller. I was able to regain control, and had issues with the aircraft yawing to the right following that. Trying to safely land was a whole other issue in itself. Has anyone experienced something like this? What’s a safe distance to operate away from the power lines to avoid interference?