OpenETran
Electric power system transient simulator
During the period from 1990 through 2002, EPRI funded the development of a Lightning Protection Design Workstation (LPDW), which was used by many utilities to assess the lightning performance of distribution lines. Since about 2002, this program has not been available. EPRI decided to release the simulation kernel of LPDW under an open-source license (GPL v3), so it may be incorporated into IEEE Flash and other projects.
OpenETran can presently simulate multi-conductor power lines...