PTP‐based time synchronisation of smart meter data for state estimation in power distribution networks

Khan, Maman Ahmad; Hayes, Barry

doi:10.1049/iet-stg.2020.0034

Cited by 11 publications

(7 citation statements)

References 34 publications

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“…A detailed explanation of how this setup can be implemented in real scenarios is provided in the authors' other work where this PTP-based infrastructure can be used to synchronize a low cost PMU using the experimental setup shown in Fig. 5 of this article [33].…”

Section: Methodsmentioning

confidence: 99%

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

Khan

Hayes

2023

IEEE Systems Journal

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The monitoring and control of power distribution systems requires an accurate and stable time synchronization infrastructure. The major requirement for a time synchronization system is sharing a global time throughout the network. This article provides an overview of the synchronization techniques implemented in power distribution systems. The implementation of different techniques for time synchronization due to heterogeneous communication infrastructure creates various challenges in the system. Therefore, this article aims to propose a homogeneous, uniform approach for a network-based synchronization mechanism in or to implement multiple distribution system applications. For this purpose, the precision time protocol (PTP), IEEE 1588, is tested experimentally for various time criticality with an Ethernet-based communication network. The testbed uses single board computers to explore different criticality of the timestampings for IEEE 1588 (PTP) to determine how various applications need different type of timestamping depending upon the performance, cost, and accuracy requirements. These different levels of timestamping requirements for synchronization affect the performance of a range of nextgeneration distribution system applications. The proposed solution provides monitoring for each application using only a single time synchronization technique with an Ethernet-based network.

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Section: Methodsmentioning

confidence: 99%

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

Khan

Hayes

2023

IEEE Systems Journal

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“…(3) Learning process: The gateway executes the weight arrangement selection decision z k (i, t ), gets the reward r S k (i, t ) based on (27), and updates the empirical performance-related distribution parameter as…”

Section: Exp3 Based Small-timescale Weight Selection Optimizationmentioning

confidence: 99%

“…The time synchronization between ground clock source

C_n

(

n=N_1+N_2+1, \dots , N

) and gateway in the t ‐th slot of the i ‐th period is based on the precise time protocol (PTP) [27], which is shown in Figure 3. PTP complies with IEEE1588 protocol and uses hardware timestamps.…”

Section: System Modelmentioning

confidence: 99%

Multiple satellite and ground clock sources‐based high‐precision time synchronization and lossless switching for distribution power system

Liu,

Zhang,

Zhou

et al. 2023

IET Communications

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Precise energy management in distribution power system requires high‐precision time synchronization among large‐scale deployed devices. Multiple clock sources‐based time synchronization possesses advantages of reliability, high precision, and robustness, but still faces several challenges such as coupling between time synchronization error and delay, as well as different timescales between clock source and clock weight optimization. In this paper, a multi‐clock source time synchronization model is constructed and a problem is formulated to minimize the synchronization error and delay through jointly optimizing large‐timescale clock source selection and small‐timescale weight selection. A reinforcement learning‐based multi‐timescale multi‐clock source time synchronization algorithm named RL‐M2 is proposed to solve the formulated problem from a learning perspective. Besides, a lossless switching method is proposed to address the switching problem for multiple clock sources. Simulation results demonstrate the superior performance of RL‐M2 and the lossless switching method in time synchronization delay and error.

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“…This technique works by aligning the clocks in analog-to-digital converters (ADCs) with a universal time reference. Most often, this reference comes from Pulse Per Second (PPS) signals provided by Global Positioning Systems (GPS) (Pardo-Zamora et al, 2020), the IEEE 1588 Precision Time Protocol (PTP) (Ahmad Khan and Hayes, 2020), or the Network Time Protocol (NTP) (Park H. et al, 2021). Recently, synchronization signals from 5G networks have also been used (Xiao et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Phasor measurement method based on soft synchronized sampling with temporal pulse signal reference

Zhang,

Tang,

Liu

et al. 2023

Front. Energy Res.

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Introduction: Phasor measurement is crucial for the monitoring and management of power grids. Traditional hardware-based phasor measurement units (PMUs) are effective but often complex and expensive. This paper introduces a software-based phasor measurement method that utilizes soft synchronization with temporal pulse signals from GPS and mobile communication stations, offering a simpler and cost-effective alternative.Methods: The proposed method synchronizes the local oscillator with Pulse Per Second (PPS) signals from GPS and primary synchronization signals from mobile communication bases. Raw data affected by the local oscillator’s instability are transformed into calibrated data using B-Spline interpolation to emulate an ideal sampling rate. The calibrated data are then subjected to a Recursive Discrete Fourier Transform (RDFT) algorithm for synchronized phasor measurement.Results: The method’s performance was assessed in compliance with the C37.118.1 standard. Key performance indicators, such as frequency, phase, and Total Vector Error (TVE), were evaluated. The proposed software-based approach demonstrated high accuracy in synchronized phasor measurements.Discussion: The results confirm that the proposed method can serve as a highly accurate and simpler alternative to conventional hardware-based solutions. Its application promises to advance synchronized phasor measurement practices in power grid monitoring, enhancing reliability and reducing complexity and costs.

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PTP‐based time synchronisation of smart meter data for state estimation in power distribution networks

Cited by 11 publications

References 34 publications

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

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

Multiple satellite and ground clock sources‐based high‐precision time synchronization and lossless switching for distribution power system

Phasor measurement method based on soft synchronized sampling with temporal pulse signal reference

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