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Energies 2017, 10(9), 1356; https://doi.org/10.3390/en10091356

A Combined Approach Effectively Enhancing Traffic Performance for HSR Protocol in Smart Grids

1
Department of Information and Communications Engineering, Myongji University, 116 Myongji-ro, Yongin, Gyeonggi 17058, Korea
2
Department of Electronic Engineering, Myongji University, 116 Myongji-ro, Yongin, Gyeonggi 17058, Korea
*
Author to whom correspondence should be addressed.
Received: 4 August 2017 / Revised: 21 August 2017 / Accepted: 5 September 2017 / Published: 8 September 2017
(This article belongs to the Special Issue Methods and Concepts for Designing and Validating Smart Grid Systems)
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Abstract

In this paper, we propose a very effectively filtering approach (EFA) to enhance network traffic performance for high-availability seamless redundancy (HSR) protocol in smart grids. The EFA combines a novel filtering technique for QuadBox rings (FQR) with two existing filtering techniques, including quick removing (QR) and port locking (PL), to effectively reduce redundant unicast traffic within HSR networks. The EFA filters unicast traffic for both unused terminal rings by using the PL technique and unused QuadBox rings based on the newly-proposed FQR technique. In addition, by using the QR technique, the EFA prevents the unicast frames from being duplicated and circulated in rings; the EFA thus significantly reduces redundant unicast traffic in HSR networks compared with the standard HSR protocol and existing traffic filtering techniques. The EFA also reduces control overhead compared with the filtering HSR traffic (FHT) technique. In this study, the performance of EFA was analyzed, evaluated, and compared to that of the standard HSR protocol and existing techniques, and various simulations were conducted to validate the performance analysis. The analytical and simulation results showed that for the sample networks, the proposed EFA reduced network unicast traffic by 80% compared with the standard HSR protocol and by 26–62% compared with existing techniques. The proposed EFA also reduced control overhead by up to 90% compared with the FHT, thus decreasing control overhead, freeing up network bandwidth, and improving network traffic performance. View Full-Text
Keywords: smart grids; substation automation system (SAS); high-availability seamless redundancy (HSR); seamless communications; traffic reduction technique smart grids; substation automation system (SAS); high-availability seamless redundancy (HSR); seamless communications; traffic reduction technique
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Tien, N.X.; Rhee, J.M.; Park, S.Y. A Combined Approach Effectively Enhancing Traffic Performance for HSR Protocol in Smart Grids. Energies 2017, 10, 1356.

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