CPC H02H 7/222 (2013.01) [H02H 1/0007 (2013.01)] | 15 Claims |
1. A fault detection and isolation system for detecting and isolating inverted-limited faults occurring on an electric power line extending downstream from an upstream inverter-limited power source, comprising a plurality of time-admittance switches spaced apart along the electric power line, configured to perform a method comprising:
storing a respective time-admittance function at each time-admittance switch, wherein the time-admittance functions define a cascade trip sequence for the time-admittance switches in a downstream-to-upstream direction;
detecting an inverter-limited fault at one or more of the time-admittance switches upstream from the fault, while not detecting the fault at one or more of the time-admittance switch downstream from the fault;
autonomously tripping a closest upstream time-admittance switch to the fault to isolate the fault on an upstream side of the fault without communication among the time-admittance switches.
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