On the Use of IEEE 1588 in Existing IEC 61850-Based SASs: Current Behavior and Future Challenges

Dominicis, C. M. De; Ferrari, Paolo; Flammini, A.; Rinaldi, Stefano; Quarantelli, M.

doi:10.1109/tim.2011.2158159

Cited by 68 publications

(25 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…To assess the timing accuracy, the 1-PPS output from different timing devices are directly compared, as discussed previously in [2]- [3], [20]. However, instead of using an oscilloscope to measure the time difference, a Linux server with 22 peripheral 1-PPS input channels is employed as shown in Fig.…”

Section: Experiments Setup and Test Methodsmentioning

confidence: 99%

“…Following a link loss, RSTP ring topology, which is widely applied in substations, can restore communications within 50 to 2000 ms [3] [27]. In comparison, a PRP LAN or a HSR ring delivers seamless redundancy (0 s recovery time), but at present, these are not widely used in substations.…”

Section: H 1588 Synchronization During Communication Link Lossmentioning

confidence: 99%

“…(1-PPS) and/or the IRIG-B time code, via dedicated fibre optic cable [2]- [3]. Considering the significant number of IEDs requiring a time source and that a single fibre optic cable may only carry time information to one device, it is inevitable that dozens of distributed GPS receivers are deployed within a power substation [4].…”

Section: Introductionmentioning

confidence: 99%

“…The performance of the IEEE 1588 technology, in terms of 1588 device characteristics, were assessed in [16] and the impact of different data networks conditions analyzed in [3], [17]- [18]. When 1588 timing is needed within a harsh substation environment, it must be both reliable and sufficiently robust so that critical automation devices relying on synchronization will not mal-operate.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Design of a Time Synchronization System Based on GPS and IEEE 1588 for Transmission Substations

Guo

Crossley

2017

IEEE Trans. Power Delivery

View full text Add to dashboard Cite

 Abstract-Accurate timing is often required for the Intelligent Electronic Devices (IEDs) used in transmission substations. A common method of achieving this is direct connection of a device to a local GPS receiver and the use of its 1-PPS synchronizing signal and the IRIG-B coded message. However, concerns about GPS reliability are encouraging the use of timing systems less dependent on the direct use of local GPS receivers. IEEE 1588 protocol is a network based time synchronization technique designed to co-exist with IEC 61850 applications and deliver sub micro-second timing accuracy. Many utilities are now considering the adoption of IEEE 1588, but they need confidence in the reliability of this technology before it can be rolled out to real substations. Hence, comprehensive tests were undertaken on an IEEE 1588 timing system, to help gain insight into the limitations of the system. This paper presents a procedure to assess the performance of a timing system based on distributed GPS receivers and one based on a mixture of GPS receivers and IEEE 1588 devices. Test results indicate whichever system is selected, high quality devices and systems, with appropriate installation and engineering, are essential to satisfy the stringent ±1 µs accuracy requirements needed by critical IED applications.

show abstract

Section: Experiments Setup and Test Methodsmentioning

confidence: 99%

Section: H 1588 Synchronization During Communication Link Lossmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Design of a Time Synchronization System Based on GPS and IEEE 1588 for Transmission Substations

Guo

Crossley

2017

IEEE Trans. Power Delivery

View full text Add to dashboard Cite

show abstract

“…Authors in [8] integrated IEEE 1588 timing in a real substation automation system in Italy in 2011. In this system, the Ethernet switches did not support 1588 and the delay request-response mechanism had to be used instead of the Peer Delay Request-Response mechanism that is specified by the 1588 power profile.…”

Section: Previous Application and Research Of Ieee 1588mentioning

confidence: 99%

Time synchronization for transmission substations using GPS and IEEE 1588

Crossley

Guo

2016

CSEE JPES

View full text Add to dashboard Cite

Abstract-Time synchronization systems that utilize the global navigation satellite systems (GNSS) are widely used in the monitoring, control, and protection of transmission networks. They ensure that phasor measurement units (PMUs) can accurately monitor voltage phase angles, increase the accuracy of fault locators, enhance the capabilities of disturbance recorders, and allow differential feeder protection to use re-routable communication networks. However, concern about the reliability of GNSS receivers used in intelligent electronic devices (IEDs) have been reported; problems include mal-operations of differential protection, erroneous satellite timing/location messages, inappropriate installations, and blocking of satellite signals due to illegal use of GNSS jammers in vehicles.Utilities now require a timing system less dependent on the use of low cost GNSS receivers integrated into IEDs, but one that uses Grandmaster clocks, slave and transparent clocks, and an Ethernet communication network. The IEEE 1588-2008 synchronization protocol uses the Ethernet to disseminate a global time reference around a substation. A future substation will probably include duplicate 1588 grandmasters, each incorporating stable oscillators with GNSS and terrestrial receivers, in conjunction with a 1588 compliant Ethernet data network with slave and transparent clocks, and redundancy boxes for interfacing with IEDs.Although IEEE 1588 protocol is promising for future substation automation systems, its performance and impact has to be fully evaluated before it can be used in real substations. This paper describes how an IEEE 1588 time synchronization testbed is designed, constructed, and tested. Testing involves measuring the time offset when the Ethernet is heavily loaded with other traffic and the holdover capability of 1588 clocks. Additional delay introduced by IEEE 1588 traffic is also measured. As there is limited testing on GPS receivers within the power industry, this paper also uses the testbed to evaluate the steady state and transient behavior of GPS receivers. The results show a 1588 time synchronization system is accurate, secure, and ideally suited for protection and control applications, compared to a timing system merely based on GPS receivers. The information described in this paper should increase a utility's confidence in applying IEEE 1588 timing in a real substation.

show abstract

Network Synchronization: An introduction

Rinaldi¹,

Ferrari²,

Flammini³

et al. 2017

Wiley Encyclopedia of Electrical and Electronics Engineering

View full text Add to dashboard Cite

In distributed systems based on networks, the clock synchronization allows to coordinate and schedule actions between stations. In today's systems, the clock synchronization may be considered as a required feature that has to be delivered by the network technology. Even the widely used Ethernet and Internet Protocol (IP) networks were not designed with support for the high‐performance clock synchronization required by audio and video applications, industrial systems, measurement devices, and grid power systems monitoring. In this article, we give an introduction to clock synchronization protocols that can be used in networks where real‐time performance is demanded.

show abstract

On the Use of IEEE 1588 in Existing IEC 61850-Based SASs: Current Behavior and Future Challenges

Cited by 68 publications

References 14 publications

Design of a Time Synchronization System Based on GPS and IEEE 1588 for Transmission Substations

Design of a Time Synchronization System Based on GPS and IEEE 1588 for Transmission Substations

Time synchronization for transmission substations using GPS and IEEE 1588

Network Synchronization: An introduction

Contact Info

Product

Resources

About