A novel scheme for wide-area time synchronization

2010 ◽  
Author(s):  
K. Fodero ◽  
C. Huntley ◽  
D. Whitehead ◽  
B. Kasztenny
Keyword(s):  
Time Synchronization ◽  
Wide Area

scholarly journals Synchronized Phasor Measurements with GPS Time Stamping using 64 Point DFT in PMU

2020 ◽  
Vol 9 (4) ◽  
pp. 2435-2440
Keyword(s):  
Power System ◽  
Time Synchronization ◽  
Electrical Energy ◽  
Wide Area ◽  
Monitoring And Control ◽  
Wide Area Monitoring ◽  
New Energy ◽  
Accurate Comparison ◽  
Area Monitoring ◽  
System Frequency

This paper describes about the time synchronization of different locations voltage or current signals for accurate comparison of signals on single phasor graph, all the measured phasors are synchronized with Global Positioning System (GPS) time stamping. Day to day power demand increases very rapidly, to meet the growing demand of electrical energy new energy resources are required and manage them efficiently. For efficient allocation of sources there should be a good monitoring and fast control system. For better monitoring and control of the system accurately it requires “Wide Area Monitoring” of power system. In the wide area monitoring system collection of data from the power system should be at a faster level. The collection of data from the power system at faster level is possible by using “Phasor Measurement Units(PMUs)”. PMU collects the data at faster rate rates like 50-60 samples for cycle, this information is send to local Phasor Data Concentrator (PDC). Local phasor data concentrator collects the data from different PMUs which are located in different areas. This PDC helps to take the necessary action on power system. For synchronization, pulse per second(PPS) is taken from GPS module. From this 1PPS, 3200 pulses is generated for high accuracy of 64 point DFT of 50Hz signal using microcontroller. System frequency is calculated by using time period between the two consecutive raising edges or falling edges of square wave. This is in synchronous with the input sinusoidal signal.

scholarly journals CoSiWiNeT: A Clock Synchronization Algorithm for Wide Area IIoT Network

2021 ◽  
Vol 11 (24) ◽  
pp. 11985
Author(s):  
Rahul Nandkumar Gore ◽  
Elena Lisova ◽  
Johan Åkerberg ◽  
Mats Björkman
Keyword(s):  
Failure Modes ◽  
Time Synchronization ◽  
Clock Synchronization ◽  
Packet Delay ◽  
Wide Area ◽  
Monitoring And Control ◽  
Performance Measurements ◽  
Public And Private ◽  
Hardware Failure ◽  
Delay Variations

Recent advances in the industrial internet of things (IIoT) and cyber–physical systems drive Industry 4.0 and have led to remote monitoring and control applications that require factories to be connected to remote sites over wide area networks (WAN). The adequate performance of remote applications depends on the use of a clock synchronization scheme. Packet delay variations adversely impact the clock synchronization performance. This impact is significant in WAN as it comprises wired and wireless segments belonging to public and private networks, and such heterogeneity results in inconsistent delays. Highly accurate, hardware–based time synchronization solutions, global positioning system (GPS), and precision time protocol (PTP) are not preferred in WAN due to cost, environmental effects, hardware failure modes, and reliability issues. As a software–based network time protocol (NTP) overcomes these challenges but lacks accuracy, the authors propose a software–based clock synchronization method, called CoSiWiNeT, based on the random sample consensus (RANSAC) algorithm that uses an iterative technique to estimate a correct offset from observed noisy data. To evaluate the algorithm’s performance, measurements captured in a WAN deployed within two cities were used in the simulation. The results show that the performance of the new algorithm matches well with NTP and state–of–the–art methods in good network conditions; however, it outperforms them in degrading network scenarios.

The Impact of Time Synchronization Deviation on the Performance of Synchrophasor Measurements and Wide Area Damping Control

2017 ◽  
Vol 8 (4) ◽  
pp. 1545-1552 ◽  
Author(s):  
Tianshu Bi ◽  
Jinrui Guo ◽  
Kai Xu ◽  
Li Zhang ◽  
Qixun Yang
Keyword(s):  
Time Synchronization ◽  
Wide Area ◽  
Damping Control ◽  
The Impact

scholarly journals A Method of Constructing Wide-Area Protection System Employing Time Synchronization and Broadband Communications

1999 ◽  
Vol 119 (8-9) ◽  
pp. 916-924 ◽  
Author(s):  
Yoshizumi Serizawa ◽  
Hiroshi Imamura ◽  
Nobuaki Sugaya ◽  
Masao Hori ◽  
Hideaki Sugiura ◽  
...  
Keyword(s):  
Time Synchronization ◽  
Protection System ◽  
Wide Area ◽  
Wide Area Protection ◽  
Broadband Communications

scholarly journals Time Synchronization in Wide Area Damping Control of Power Systems

2018 ◽  
Author(s):  
Felipe Wilches-Bernal ◽  
Brian J. Pierre ◽  
David A. Schoenwald ◽  
Ryan T. Elliott ◽  
Daniel J. Trudnowski
Keyword(s):  
Power Systems ◽  
Time Synchronization ◽  
Wide Area ◽  
Damping Control
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