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Evaluation of precision time synchronisation methods for substation applications

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dc.contributor.authorIngram, D.M.E.
dc.contributor.authorSchaub, P.
dc.contributor.authorCampbell, D.A.
dc.contributor.authorTaylor, R.R.
dc.contributor.conference2012 International IEEE Symposium on Precision Clock Synchronization for Measurement Control and Communication (ISPCS) (24 Sep 2012 - 28 Sep 2012 : San Francisco, US)
dc.date.issued2012
dc.description.abstractMany substation applications require accurate time-stamping. The performance of systems such as Network Time Protocol (NTP), IRIG-B and one pulse per second (1-PPS) have been sufficient to date. However, new applications, including IEC 61850-9-2 process bus and phasor measurement, require accuracy of one microsecond or better. Furthermore, process bus applications are taking time synchronisation out into high voltage switchyards where cable lengths may have an impact on timing accuracy. IEEE Std 1588, Precision Time Protocol (PTP), is the means preferred by the smart grid standardisation roadmaps (from both the IEC and US National Institute of Standards and Technology) of achieving this higher level of performance, and integrates well into Ethernet based substation automation systems. Significant benefits of PTP include automatic path length compensation, support for redundant time sources and the cabling efficiency of a shared network. This paper benchmarks the performance of established IRIG-B and 1-PPS synchronisation methods over a range of path lengths representative of a transmission substation. The performance of PTP using the same distribution system is then evaluated and compared to the existing methods to determine if the performance justifies the additional complexity. Experimental results show that a PTP timing system maintains the synchronising performance of 1-PPS and IRIG-B timing systems, when using the same fibre optic cables, and further meets the needs of process buses in large substations
dc.identifier.citation2012 International IEEE Symposium on Precision Clock Synchronization for Measurement Control and Communication (ISPCS) proceedings, 2012, pp.37-42
dc.identifier.doi10.1109/ISPCS.2012.6336630
dc.identifier.isbn9781457717147
dc.identifier.urihttps://hdl.handle.net/11541.2/124375
dc.language.isoen
dc.publisherIEEE
dc.publisher.placeUS
dc.relation.fundingBelden Solutions
dc.relation.fundingCisco Systems
dc.relation.fundingMeinberg Funkuhren
dc.rightsCopyright 2012 IEEE
dc.source.urihttps://doi.org/10.1109/ISPCS.2012.6336630
dc.subjectpower cables
dc.subjectsynchronization
dc.subjectsubstation
dc.subjectoptical pulses,
dc.subjectdelay
dc.subjectoptical transmitters,
dc.subjectoptical receivers
dc.titleEvaluation of precision time synchronisation methods for substation applications
dc.typeConference paper
pubs.publication-statusPublished
ror.mmsid9916112208501831

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