Time Signal Manipulation Detection Using Remotely Managed Time
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United States of America
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Jan 16, 2020
app pub date -
Jul 12, 2019
filing date -
Jul 12, 2019
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Abstract
Systems and methods are provided for monitoring or protecting an electric power distribution system using protective devices that may rely on accurate time signals from a common time source. A first protective device may receive a first time signal deriving from the common time source and a second protective device may receive a second time signal deriving from the common time source. The first time signal and the second time signal may be compared; when a difference between them exceeds a defined threshold, time signal manipulation may be detected. The protective devices may modify their operation in response to or to account for the time signal manipulation.
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