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Title: GPS signal loss in the wide area monitoring system: Prevalence, impact, and solution

Abstract

The phasor measurement unit (PMUs), equipped with Global Positioning System (GPS) receivers for precise time synchronization, provides measurements of voltage and current phasors at different nodes of the wide area monitoring system. However, GPS receivers are likely to lose satellite signals due to various unpredictable factors. The prevalence of GPS signal loss (GSL) on PMUs is first investigated using real PMU data. The historical GSL events are extracted from a phasor data concentrator (PDC) and FNET/GridEye server. The correlation between GSL and time, spatial location, solar activity are explored via comprehensive statistical analysis. Furthermore, the impact of GSL on phasor measurement accuracy has been studied via experiments. Finally, several potential solutions to mitigate the impact of GSL on PMUs are discussed and compared.

Authors:
 [1];  [1]; ORCiD logo [1];  [1];  [1];  [1];  [2]
  1. Univ. of Tennessee, Knoxville, TN (United States)
  2. Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1399392
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Electric Power Systems Research
Additional Journal Information:
Journal Volume: 147; Journal Issue: C; Journal ID: ISSN 0378-7796
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; FNET/GridEye; GPS signal loss; Phasor data concentrators; Phasor measurement unit; Wide area monitoring system

Citation Formats

Yao, Wenxuan, Zhou, Dao, Zhan, Lingwei, Liu, Yong, Cui, Yi, You, Shutang, and Liu, Yilu. GPS signal loss in the wide area monitoring system: Prevalence, impact, and solution. United States: N. p., 2017. Web. doi:10.1016/j.epsr.2017.03.004.
Yao, Wenxuan, Zhou, Dao, Zhan, Lingwei, Liu, Yong, Cui, Yi, You, Shutang, & Liu, Yilu. GPS signal loss in the wide area monitoring system: Prevalence, impact, and solution. United States. doi:10.1016/j.epsr.2017.03.004.
Yao, Wenxuan, Zhou, Dao, Zhan, Lingwei, Liu, Yong, Cui, Yi, You, Shutang, and Liu, Yilu. Sun . "GPS signal loss in the wide area monitoring system: Prevalence, impact, and solution". United States. doi:10.1016/j.epsr.2017.03.004. https://www.osti.gov/servlets/purl/1399392.
@article{osti_1399392,
title = {GPS signal loss in the wide area monitoring system: Prevalence, impact, and solution},
author = {Yao, Wenxuan and Zhou, Dao and Zhan, Lingwei and Liu, Yong and Cui, Yi and You, Shutang and Liu, Yilu},
abstractNote = {The phasor measurement unit (PMUs), equipped with Global Positioning System (GPS) receivers for precise time synchronization, provides measurements of voltage and current phasors at different nodes of the wide area monitoring system. However, GPS receivers are likely to lose satellite signals due to various unpredictable factors. The prevalence of GPS signal loss (GSL) on PMUs is first investigated using real PMU data. The historical GSL events are extracted from a phasor data concentrator (PDC) and FNET/GridEye server. The correlation between GSL and time, spatial location, solar activity are explored via comprehensive statistical analysis. Furthermore, the impact of GSL on phasor measurement accuracy has been studied via experiments. Finally, several potential solutions to mitigate the impact of GSL on PMUs are discussed and compared.},
doi = {10.1016/j.epsr.2017.03.004},
journal = {Electric Power Systems Research},
number = C,
volume = 147,
place = {United States},
year = {Sun Mar 19 00:00:00 EDT 2017},
month = {Sun Mar 19 00:00:00 EDT 2017}
}

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