Directional fault location and isolation system
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United States of America Patent
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Feb 25, 2014
Grant Date -
Mar 15, 2012
app pub date -
Sep 9, 2011
filing date -
Sep 10, 2010
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A directional fault location and isolation system for a three phase electric power circuit that identifies a faulted segment by determining the direction of the fault at multiple tap points in the electric power circuit. The directional fault controller, which may be a centralized controller or a number of peer-to-peer controllers located at the tap points, includes communication equipment for exchanging information with the monitoring equipment and the sectionalizing equipment at each sectionalizing control point, which includes the tap points and may also include the substations. The controller also includes processing equipment that determines the directionality of a fault on the power line at each current monitoring device, identifies a faulted line section by identifying a change in the directionality of the fault associated with the faulted line section, and operates one or more of the sectionalizing switches to isolate the faulted line section from the circuit.
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