LAN congestion scenario and performance evaluation

1 January 1999

conference paper
Published by Institute of Electrical and Electronics Engineers (IEEE)

Vol. 2, 919-924 vol.2
https://doi.org/10.1109/pesw.1999.747292

Abstract

An actual multi-fault event was examined to determine what messages from protective relays would be generated on a substation Ethernet LAN. The event was caused by a tornado collapsing a quad built tower, resulting in simultaneous faults on two 345 kV lines and two 138 kV lines. Various means of combining relaying messages were examined to potentially reduce the traffic. The issue of message simultaneity was simulated to determine its effect on potential message collisions and LAN performance. The performance of 10 and 100 MB shared and switched hub LANs was simulated at various message levels. The performance requirement was to deliver messages, application to application, in 4 milliseconds. The simulations showed that a 10 MB shared hub LAN met the requirement up to 15 messages. A 100 MB shared hub LAN and both 10 and 100 MB switched hub LANs met the 4 ms requirement up to 100 messages.

Keywords

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