Power line carrier practices and experiences

Höhn, Julia; Zipp, J.A.; Baumgartner, Emma; Burnett, R.O.; Drum, P.R.; Hemming, D.R.; Huddleston, J.D.; Ingleson, J.W.; Latham, J.R.; Nelson, Bob; Ohnesorge, R.W.; Pattman, A.H.; Sage, E.T.; Udren, Eric A.

doi:10.1109/61.400881

Cited by 8 publications

(3 citation statements)

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“…However, the challenge of propagation of a time dissemination signal over such large distances is a problem which needs to be resolved. A key tenet of the proposed scheme is the established practice of Power Line Carrier (PLC), which has been used commercially on Transmission Lines for several decades 11 – 13 . Modal theory - developed largely as a means to explain the propagation of power line carrier signals - reveals that several low attenuation aerial modes support long range communication on double circuit transmission lines 14 .…”

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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“…PLC is a popular method of communicating information between power line terminals as it is based on communicating the data signals and control signals by sending them on a modulated carrier on the power lines [23]. When comparing with other communication technologies, PLC has the advantages of low cost infrastructure because it does not require the installation of costly devices [2].…”

Section: The Communication Infrastructurementioning

confidence: 99%

“…It is estimated that only 8% of utility grids will utilize PLC in the future more than other types of communication technologies [23]. According to the estimated requirements of utility grids, GSM is a good option for implementing the communication infrastructure of the smart grids [15].…”

Section: The Communication Infrastructurementioning

confidence: 99%

A Comprehensive Study of Smart Grids

GhaziKhameesAli¹,

Ridha²

2014

IJCA

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In this paper, various aspects of smart grids are described. These aspects include the components of smart grids, the detailed functions of the smart energy meters within the smart grids and their effects on increasing the awareness, the advantages and disadvantages of smart grids, and the requirements of utilizing smart grids. To put some light on the difference between smart grids and traditional utility grids, some aspects of the traditional utility grids are covered in this paper as well. General TermsSmart energy metering system, smart grids.

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Pilot Protection Systems

2021

Power System Protection

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Power line carrier practices and experiences

Cited by 8 publications

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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 Comprehensive Study of Smart Grids

Pilot Protection Systems

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