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AssigneeSchweitzer Engineering Laboratories, Inc.
InventorsEric A. Sagen, Mark L. Zeller, Bogdan Z. Kasztenny
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This disclosure relates to systems and methods for verification of time sources. In various embodiments, one or more secondary time sources may be used to verify the accuracy of a primary time source prior to relying on a time signal created by the primary time source. In one embodiment, a first interface is configured to receive the primary time signal from a primary time source, and a second interface in communication with a secondary time source is configured to receive a secondary time signal. A time assessment subsystem is configured to determine an occurrence of a verification criteria. Upon the occurrence of the verification criteria, the system may compare the primary time signal and the secondary time signal to determine whether that the primary time signal is consistent with the secondary time signal. If the signal is consistent, the primary time source may be utilized by the system.
An intelligent electronic device (IED) operable to monitor electrical conditions in an electric power system and to utilize an external time source, the IED comprising:
A system configured to verify and utilize a primary time signal, the system comprising:
A method for verifying and utilizing a primary time signal, the method comprising:
Dependencies are inferred from the claim text.