Patent ID: 8558551

Claim:
A system for determining a location of a fault in a radial electric power delivery system with at least two branches, comprising: a first device in electrical communication with the radial electric power delivery system for obtaining power system voltage and current information therefrom and determining whether a fault condition exists thereon; and, a fault locator in communication with the first device, including: a receive module for receiving: an indication from the first device of a phase-to-phase fault condition on the radial electric power delivery system; and, radial electric power delivery system data including the voltage and current information or a value calculated therefrom from the first device; a fault location determination module for determining possible fault locations and creating a list of the possible fault locations using: the radial electric power delivery system data from the first device; physical parameters of the radial electric power delivery system; and, a calculated reactance to the fault calculated without using positive-sequence current.