A Software-based Low-Jitter Servo Clock for Inexpensive Phasor Measurement Units

Pietro Tosato, David Macii, Daniele Fontanelli, Davide Brunelli, David Laverty

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)

Abstract

This paper presents the design and the implementation of a servo-clock (SC) for low-cost Phasor Measurement Units (PMUs). The SC relies on a classic Proportional Integral (PI) controller, which has been properly tuned to minimize the synchronization error due to the local oscillator triggering the on-board timer. The SC has been implemented into a PMU prototype developed within the OpenPMU project using a BeagleBone Black (BBB) board. The distinctive feature of the proposed solution is its ability to track an input Pulse-Per-Second (PPS) reference with good long-term stability and with no need for specific on-board synchronization circuitry. Indeed, the SC implementation relies only on one co-processor for real-time application and requires just an input PPS signal that could be distributed from a single substation clock.

Original languageEnglish
Title of host publicationISPCS 2018 - International IEEE Symposium on Precision Clock Synchronization for Measurement, Control, and Communication: Proceedings
PublisherIEEE Computer Society
ISBN (Electronic)9781538642627
DOIs
Publication statusPublished - 22 Nov 2018
Event12th International IEEE Symposium on Precision Clock Synchronization for Measurement, Control, and Communication, ISPCS 2018 - Geneva, Switzerland
Duration: 30 Sep 201805 Oct 2018

Publication series

NameIEEE International Symposium on Precision Clock Synchronization for Measurement, Control, and Communication, ISPCS
Volume2018-September
ISSN (Print)1949-0305
ISSN (Electronic)1949-0313

Conference

Conference12th International IEEE Symposium on Precision Clock Synchronization for Measurement, Control, and Communication, ISPCS 2018
CountrySwitzerland
CityGeneva
Period30/09/201805/10/2018

Keywords

  • Phasor Measurement Units
  • Servo clock
  • Smart grid
  • Syntonization
  • Time synchronization

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Control and Systems Engineering

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