As many hams have found, perhaps the best way of finding a noisy power pole is with a VHF AM radio. Since poles can create noise as far as 1 mile away, it means lots of walking. Even more if the noise is intermittent.
A Chinese Q900 is a transceiver with a receiver from 1 to 2000 MHz. About $650. It has a compass and GPS built in. So with appropriate software and a wideband antenna on the car, one could drive while recording signal strength and coordinates. Perhaps not only 130 MHz but possibly 300 MHz or more if it gives a better resolution. Then map the results and perhaps average across days.
Does such software exist or would it be easy to write it?
Ignacy NO9E