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

Abstract

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.

Methods and Concepts for Designing and Validating Smart Grid Systems

“…This controller follows a new strategy for dynamically adjusting the power frequency characteristic based on the imbalance state. The authors in [5] were able to demonstrate through simulations that their proposed effective filtering approach (EFA), to improve network traffic performance for the high-availability seamless redundancy (HSR) protocol, reduces network unicast traffic by up to 80%. Simulation of an unbalanced 12.47-kV feeder with 12,780 households and 1000 electric vehicles (EV) under peak and auxiliary load conditions was conducted in [6] to analyse a three-phase loss allocation procedure for distribution networks.…”

Enhanced Effective Filtering Approach (eEFA) for Improving HSR Network Performance in Smart Grids

“…PL then locks the nondestination DANH rings to prevent the next frames from being forwarded to the DANH rings. From the second frame onward, EFA does not forward the unicast frame to nondestination DANH rings [13]. …”

“…In the latter, unicast frames are forwarded from a source to a destination through two separate paths that are pre-established between the source and the destination. Traffic filtering-based techniques can be classified into single-filtering techniques, including the quick removing (QR) technique [7], the traffic control (TC) technique [8], the port locking (PL) technique [9], and combined-filtering techniques, including the hybrid QR and PL approach (QRPL) [10], the enhanced port locking (EPL) technique [11], the filtering HSR traffic (FHT) technique [12], and the effectively filtering approach (EFA) [13]. Most of the filtering-based techniques (QR, TC, PL, QRPL, and EPL) do not solve all the HSR issues.…”

“…EFA is one of the most effective filtering techniques. EFA reduces redundant unicast traffic in HSR networks by solving all issues faced in HSR [13]. EFA uses the PL and FQR techniques for filtering unicast traffic for nondestination DANH rings and passive QuadBox rings, respectively.…”