Fault detection in electric power delivery systems using underreach, directional, and traveling wave elements
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United States of America Patent
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Aug 11, 2020
Grant Date -
May 25, 2017
app pub date -
Feb 2, 2017
filing date -
Sep 16, 2014
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Abstract
The present disclosure pertains to systems and methods for detecting faults in an electric power delivery system. In one embodiment, system may include a data acquisition subsystem configured to receive a plurality of representations of electrical conditions. The system may also include an incremental quantities subsystem configured to calculate an incremental current quantity and an incremental voltage quantity based on the plurality of representations. A fault detection subsystem may be configured to determine a fault type based on the incremental current quantity and the incremental voltage quantity, to select an applicable loop quantity, and to declare a fault based on the applicable loop quantity, the incremental voltage quantity, and the incremental current quantity. A protective action subsystem may implement a protective action based on the declaration of the fault.
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