Network Interactions and Performance of a Multifunction IEC 61850 Process Bus

New substation technology, such as nonconventional instrument transformers, and a need to reduce design and construction costs are driving the adoption of Ethernet-based digital process bus networks for high-voltage substations. Protection and control applications can share a process bus, making mor...

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Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 2013-12, Vol.60 (12), p.5933-5942
Main Authors: Ingram, D. M. E., Schaub, P., Taylor, R. R., Campbell, D. A.
Format: Article
Language:English
Subjects:
Buses (vehicles)
Digital
Ethernet
Ethernet networks
IEC 61850
IEC standards
industrial networks
IP networks
Network topology
Networks
Performance evaluation
process bus
Product introduction
protective relaying
Protocol (computers)
Protocols
smart grid
spanning tree
substation automation
Substations
Switching theory
Traffic engineering
Traffic flow
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Summary:New substation technology, such as nonconventional instrument transformers, and a need to reduce design and construction costs are driving the adoption of Ethernet-based digital process bus networks for high-voltage substations. Protection and control applications can share a process bus, making more efficient use of the network infrastructure. This paper classifies and defines performance requirements for the protocols used in a process bus on the basis of application. These include Generic Object Oriented Substation Event, Simple Network Management Protocol, and Sampled Values (SVs). A method, based on the Multiple Spanning Tree Protocol (MSTP) and virtual local area networks, is presented that separates management and monitoring traffic from the rest of the process bus. A quantitative investigation of the interaction between various protocols used in a process bus is described. These tests also validate the effectiveness of the MSTP-based traffic segregation method. While this paper focuses on a substation automation network, the results are applicable to other real-time industrial networks that implement multiple protocols. High-volume SV data and time-critical circuit breaker tripping commands do not interact on a full-duplex switched Ethernet network, even under very high network load conditions. This enables an efficient digital network to replace a large number of conventional analog connections between control rooms and high-voltage switchyards.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2012.2233701