Precise Timing Based on Pulsar Observation for Grid Synchronization

Conference · Mon Feb 01 00:00:00 EST 2021

DOI:https://doi.org/10.1109/ISGT49243.2021.9372160· OSTI ID:1835209

Luo, Xiqian ^[1]; Yin, He ^[1]; Qiu, Wei ^[2]; Zhang, Liang ^[1]; Liu, Yilu ^[3]

---

1. University of Tennessee, Knoxville (UTK)
2. University of Tennessee (UT)
3. ORNL

While Global Positioning System signals are widely used as the synchronized timing Sources for wide-area measurement systems for power grid monitoring and control, they are vulnerable to failures and malicious attacks. To address this Problem, an alternative kind of timing sources, the millisecond pulsars, were proposed to serve the power grid as they are more precise and physically indestructible. Millisecond pulsars are a kind of neutron stars that emit radio pulse signals that have extremely stable periods of milliseconds. However, the observed pulse Signals from pulsars cannot be directly used for timing because of their low signal-to-noise ratio and the dispersion effects of interstellar medium. In this paper, the precise timing method based on pulsar observation data is proposed to interpret the pulsar observation data and therefrom to generate precise timing signal for the power grid synchronization. In our proposed method,. incoherent de-dispersion is used on the observation data to mitigate the effect of interstellar medium. dispersion. Then spectrum analysis and segment folding are used to precisely estimate the local pulsar period. Finally the standard pulse per second signal is generated from. the estimated pulsar period and its precision. is analyzed. Experiments with the observation data of the pulsar based timing signal can be more accurate compared to GPS timing signals.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1835209
• Resource Relation: Conference: 2021 IEEE Power and Energy Society Innovative Smart Grid Technologies Conference (ISGT) - Washington, District of Columbia, United States of America - 2/16/2021 10:00:00 AM-2/18/2021 10:00:00 AM
• Country of Publication: United States
• Language: English