We don't have synonyms for power lines yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are power line, powerline and power dives.
(n) :
An electrical wire, cable or conduit, suspended in air by utility poles or transmission towers, or buried underground, used for the carrying of electricity either from a power source such as a generating station to a substation, or from a substation to a building such as a plant, commercial building or a home.
(n) :
An electrical wire, cable or conduit, suspended in air by utility poles or transmission towers, or buried underground, used for the carrying of electricity either from a power source such as a generating station to a substation, or from a substation to a building such as a plant, commercial building or a home.