Measurement Data Based Time Stamp Synchronization in Power Quality Data Post Processing

Pekka Koponen, Antti Hilden, Pertti Pakonen

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    1 Citation (Scopus)

    Abstract

    Often the accuracy or reliability of the time stamps of power quality data coming from different measurement locations is not adequate for certain analysis tasks. This paper studies improving the accuracy and reliability of the time stamps by utilizing the mutual correlations of the measured signals. Especially the electricity grid fundamental frequency estimated using a reliable and stable high performance adaptive method is almost the same everywhere in a synchronized power system. That enables accurate identification of clock time differences and drifts. The paper compares the results with the time stamps given by time managed local metered data preprocessing and concentrator servers. The results show that the identified time differences agree well with the time stamps given by the servers, but also reveals that the identified timing difference makes it possible to detect and correct the large timing errors that occasionally appeared in the time stamps added by the server.

    Original languageEnglish
    Title of host publication2021 IEEE Madrid PowerTech, PowerTech 2021 - Conference Proceedings
    PublisherIEEE Institute of Electrical and Electronic Engineers
    Number of pages6
    ISBN (Electronic)978-1-6654-3597-0
    DOIs
    Publication statusPublished - 28 Jun 2021
    MoE publication typeA4 Article in a conference publication
    Event2021 IEEE Madrid PowerTech, PowerTech 2021 - Madrid, Spain
    Duration: 28 Jun 20212 Jul 2021

    Conference

    Conference2021 IEEE Madrid PowerTech, PowerTech 2021
    Country/TerritorySpain
    CityMadrid
    Period28/06/212/07/21

    Keywords

    • Adaptive signal processing
    • Clock synchronization
    • Frequency measurement
    • Power quality

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