IEEE 1588 Time Synchronization in Power Distribution System Applications: Timestamping and Accuracy Requirements

Khan, Maman Ahmad; Hayes, Barry

doi:10.1109/jsyst.2023.3269920

Cited by 2 publications

(2 citation statements)

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“…On electricity networks, the need for accurate and low latency time synchronisation is well established. A comprehensive study of timestamping requirements for distribution networks emphasises the importance of both accuracy and latency 2 . Applications which demand hardware timestamping, such as Fast Distributed Generation (DG) disconnection, state estimation and Islanding in Microgrids require time accuracies in the order of 1 μs and latencies of 1–50 ms.…”

Section: Introductionmentioning

confidence: 99%

A sub-μs accuracy GPS alternative using electrical transmission grids as precision timing networks

Robson,

Haddad

2024

Sci Rep

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It is widely recognised that over-reliance on GNSS (e.g GPS) for time synchronisation represents an acute threat to modern society, and a diversity of alternatives are required to mitigate the threat of an outage. This paper proposes a GNSS alternative using time dissemination over national scale transmission or distribution networks. The method utilises the same frequency bandwidth and coupling technology as established power line carrier technology in conjunction with modern chirp Spread Spectrum modulation. The basis of the method is the transmission of a time synchronised chirp from a central substation, coupled into the aerial modes of the transmission line. During GNSS operation, all substations can estimate the time of flight by correlating the received chirp with a time-synchronised local copy. During GNSS outage, time sychronisation to the central substation is maintained by correcting for the precalculated time of flight. It is shown that recent advances in chirp spread spectrum allow for a computationally efficient algorithm with the capacity to compute hundreds of thousand of chirp correlations every second, facilitating timing accuracy which satisfies the majority of smart grid applications. ATP-EMTP simulations of the method on large transmission networks demonstrate sub-μs timing accuracy even in the presence of low SNR and impulsive noise. An FPGA prototype demonstrates experimentally sub-μs accuracy for time dissemination over a distance of 700 m. Averaging over time is shown to facilitate satisfactory performance down to $$-20\,\hbox {dB}$$ - 20 dB , which could extend the range of the system to a national scale and a time dissemination network invulnerable to wireless spoofing and jamming attack vectors.

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Section: Introductionmentioning

confidence: 99%

A sub-μs accuracy GPS alternative using electrical transmission grids as precision timing networks

Robson,

Haddad

2024

Sci Rep

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“…The presented research investigates state-of-the-art solutions to enhance resourceconstrained RISC-V System-on-Chip (SoC) synchronization capabilities with high precision. In contemporary applications, accurate timing plays a pivotal role in ensuring the seamless operation and coordination of various systems, including, but not limited to Industrial Automation [7], Power Grid Management [8,9], and Transportation Systems.…”

Section: Introductionmentioning

confidence: 99%

A Survey on IEEE 1588 Implementation for RISC-V Low-Power Embedded Devices

Arteaga,

Muguira,

Jiménez

et al. 2024

Electronics

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IEEE 1588, also known as the Precision Time Protocol (PTP), is a standard protocol for clock synchronization in distributed systems. While it is not architecture-specific, implementing IEEE 1588 on Reduced Instruction Set Computer-V (RISC-V) low-power embedded devices demands considering the system requirements and available resources. This paper explores various approaches and techniques to achieve accurate time synchronization in such instruments. The analysis covers software and hardware implementations, discussing each method’s challenges, benefits, and trade-offs. By examining the state-of-the-art in this field, this paper provides valuable insights and guidance for researchers and engineers working on time-critical applications in RISC-V-based embedded systems, aiding in selecting the most-suitable stack for their designs.

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IEEE 1588 Time Synchronization in Power Distribution System Applications: Timestamping and Accuracy Requirements

Cited by 2 publications

References 44 publications

A sub-μs accuracy GPS alternative using electrical transmission grids as precision timing networks

A sub-μs accuracy GPS alternative using electrical transmission grids as precision timing networks

A Survey on IEEE 1588 Implementation for RISC-V Low-Power Embedded Devices

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