COMMUNICATION OF ELECTRIC POWER SYSTEM SAMPLES WITHOUT EXTERNAL TIME REFERENCE
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United States of America Patent
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Apr 9, 2020
app pub date -
May 16, 2019
filing date -
Oct 8, 2018
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Disclosed herein is a system for time aligning electric power system measurements at an intelligent electronic device (IED) from signals from merging units where the merging unit does not require a common or external time source. Communications from merging units may arrive at different times due to differences in communication latency or other factor. The IED may associate digital samples from merging units with a local time domain of the IED based on the data acquisition, data processing, and data communication latency in communicating with the merging units.
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