Integration of existing IEC61850-based SAS within new high-availability architectures

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

doi:10.1109/amps.2010.5609513

Cited by 9 publications

(7 citation statements)

References 4 publications

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“…The availability of a network is the capability to be available for transferring information when required by the applications. The availability of a network can be obtained using redundant network topologies managed by dedicated protocols [10].  Time synchronization.…”

Section: Introductionmentioning

confidence: 99%

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Advanced networks for distributed measurement in substation automation systems

Ferrari

Flammini

Rinaldi

et al. 2013

2013 IEEE International Workshop on Applied Measurements for Power Systems (AMPS)

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The adoption of IEC 61850 in the deployment of Substation Automation System opens new scenarios to system design. The presence of a communication infrastructure connecting Intelligent Electronic Device (IED), sensors and protections may suggest the development of distribute measurement devices, where the sampling of the physical quantities and the elaboration of the sampled value could be performed by different physical devices. Nevertheless, such architecture is based on an ideal communication infrastructure, which can transfer the information among the distributed devices without affecting the measurement performance. On the contrary a real network infrastructure could suffer from several failure conditions, mainly to the harsh environment of substations where the installed network devices are not periodically replaced. In the following paper, the effects of network faults on a distributed measurement system in electrical substations are considered. The behavior of network infrastructure and the quality of the service offered in the case of the most common network failures has been analyzed using a simulation environment. The results demonstrate that the commonly adopted Rapid Spanning Tree Protocol (RSTP) is not suitable for the most demanding measurement applications due to the loss of measurement samples during the network reconfiguration time (up to 200 ms). On the contrary, more advanced redundancy protocols, like Parallel Redundancy Protocol (PRP), are able to satisfy also the most strict availability requirements, as suggested by the simulation results.

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Section: Introductionmentioning

confidence: 99%

“…Several solutions are available in literature to improve network availability. Nevertheless, two technologies are typically adopted in SAS [10] [14]: the Rapid Spanning Tree Protocol (RSTP) and the Parallel Redundancy Protocol (PRP). Therefore, the analysis presented in this paper is focused on these two protocols.…”

Section: Introductionmentioning

confidence: 99%

Advanced networks for distributed measurement in substation automation systems

Ferrari

Flammini

Rinaldi

et al. 2013

2013 IEEE International Workshop on Applied Measurements for Power Systems (AMPS)

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“…Any failure in an SAS may cause malfunctioning and data loss due to the disruption in data communication [1]. The application of highly available networks to mitigate the impact of failures on digital networks is a general point of interest [2], [3]. The fault-tolerant scheme introduced in [4] divides the entire network into several subnets to minimize data loss in the SAS.…”

Section: Introductionmentioning

confidence: 99%

“…Originally, HSR and PRP were introduced for SAS, but they may have B applications in other critical networking problems, as well [8]. Certain software, protocols, topologies and hardware are required to implement the highly available SAS [2]. The literature highlights the importance of reliability for minimizing data loss.…”

Section: Introductionmentioning

confidence: 99%

Online data loss in substation automation systems

Falahati

Vakilian

Yong

2015

2015 IEEE Power &Amp; Energy Society General Meeting

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The study presented in this paper investigated online data loss in a substation automation system (SAS) under network faults or failures. Online data loss refers to the amount of data that become inaccessible when a failure occurs in the SAS. It is a mathematical index related to the network's topology and architecture, and the calculation of which requires knowledge of the physical characteristics of SAS elements.The elements that record data were identified, and then the online data lost due to failures in those elements were determined. Also, as a case study, a typical SAS was examined under various states of failure, and the online data loss occurring under each scenarios was calculated.

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“…In a system with redundant grandmasters, the redundant grandmaster must be able to detect failure of the first grandmaster, and the ordinary clocks must be able to switch from one grandmaster to another without incurring in an unacceptable frequency or phase jumps. Fault tolerance is critical in telecom applications and many data acquisition applications, where safety and reliability are required (De Dominicis et al, 2010a).…”

Section: Clock Synchronization Over Packet-switched Wired Networkmentioning

confidence: 99%