Advanced multi-receiver position-information-aided vector tracking for robust GPS time transfer to PMUs

Yuting Ng, Grace Xingxin Gao

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

Abstract

Phasor Measurement Units (PMUs) provide time-synchronized, accurate and precise measurements of instantaneous voltages and currents at many locations across the electrical power system. The current state-of-the-art time transfer architecture for PMUs uses GPS time synchronization. The dependence on GPS for time synchronization introduces new vulnerabilities to a power system utilizing PMUs. Thus, in our prior work, we proposed and verified with experimental data the concept of using multi-receiver position-information-aided vector tracking (MRPIAVT) to provide accurate, robust and reliable GPS time transfer for PMUs [1]. The MRPIAVT architecture is improved upon in this paper, leading to Advanced MRPIAVT. Improvements include modification of the state estimation equations such that the state vector contains only the clock bias and clock drift states. Updated clock dependent process noise covariance matrix used in the Extended Kalman Filter (EKF). Increased pre-detection coherent integration timing. Hardware timing synchronization, additional sub-sample software timing synchronization and an increased sampling rate. We demonstrate with further experiments, the enhanced performance of Advanced MRPIAVT with respect to timing accuracy, jamming, multipath and data-level spoofing.

Original languageEnglish (US)
Title of host publication28th International Technical Meeting of the Satellite Division of the Institute of Navigation, ION GNSS 2015
PublisherInstitute of Navigation
Pages3443-3448
Number of pages6
ISBN (Electronic)9781510817258
StatePublished - Jan 1 2015
Event28th International Technical Meeting of the Satellite Division of the Institute of Navigation, ION GNSS 2015 - Tampa, United States
Duration: Sep 14 2015Sep 18 2015

Publication series

Name28th International Technical Meeting of the Satellite Division of the Institute of Navigation, ION GNSS 2015
Volume5

Other

Other28th International Technical Meeting of the Satellite Division of the Institute of Navigation, ION GNSS 2015
CountryUnited States
CityTampa
Period9/14/159/18/15

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Software

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  • Cite this

    Ng, Y., & Gao, G. X. (2015). Advanced multi-receiver position-information-aided vector tracking for robust GPS time transfer to PMUs. In 28th International Technical Meeting of the Satellite Division of the Institute of Navigation, ION GNSS 2015 (pp. 3443-3448). (28th International Technical Meeting of the Satellite Division of the Institute of Navigation, ION GNSS 2015; Vol. 5). Institute of Navigation.