RURT: A novel approach for removing the unnecessary redundant traffic in any HSR closed-loop network type

Nsaif, Saad Allawi; Rhee, Jong Myung

doi:10.1109/ictc.2013.6675540

Cited by 10 publications

(3 citation statements)

References 7 publications

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“…Note that, however, the VRing requires a static configuration, which needs the network administrator's intervention. Later, we also proposed a different approach, called removing the unnecessary redundant traffic (RURT), for any HSR closed-loop network type at an early stage [10]. For the sample network, the RURT approach shows up to a 50% reduction in network traffic under both failure-free and failure cases compared to the standard HSR protocol.…”

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confidence: 99%

DVP: A Novel High-Availability Seamless Redundancy (HSR) Protocol Traffic-Reduction Algorithm for a Substation Automation System Network

Nsaif

Rhee

2014

Energies

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The high-availability seamless redundancy (HSR) protocol, a potential candidate for substation automation system (SAS) networks, provides duplicated frame copies of each sent frame, with zero fault-recovery time. This means that even in the case of node or link failure, the destination node will receive at least one copy of the sent frame. Consequently, there is no network operation down time. However, the forwarding process of the QuadBox node in HSR is not smart and relies solely on duplication and random forwarding of all received frames. Thus, if a unicast frame is sent in any closed-loop network, the frame copies will be spread through most of all the links in both directions until they reach the destination node, which inevitably results in significant, unnecessary network traffic. In this paper, we present an algorithm called the dual virtual paths (DVP) algorithm to solve such an HSR excessive traffic issue. The idea behind our DVP algorithm is to establish automatic DVP between each HSR node and all the other nodes in the network, except for the QuadBox node. These virtual paths will be used for DVP unicast traffic transmission, rather than using the standard HSR transmission process. Therefore, the DVP algorithm results in less traffic, because there is no duplication or random forwarding, contrary to standard HSR. For the sample networks selected in this paper, the DVP algorithm shows more than a 70% reduction in network traffic and about an 80% reduction in the discarded traffic compared to the standard HSR protocol.Energies 2014, 7 1793

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confidence: 99%

DVP: A Novel High-Availability Seamless Redundancy (HSR) Protocol Traffic-Reduction Algorithm for a Substation Automation System Network

Nsaif

Rhee

2014

Energies

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“…The QR method is proposed for ringtype networks, while the VRing divides any closed-loop HSR into several VRings for traffic reduction. Secondly, they proposed an approach know as removing unnecessary redundant traffic (RURT) [13]. This removes these traffic type at an early stage instead of circulating it in the network.…”

Section: Copyright C 2016 the Institute Of Electronics Information Amentioning

confidence: 99%

Extended Dual Virtual Paths Algorithm Considering the Timing Requirements of IEC61850 Substation Message Types

Hong

Lim

Joe

2016

IEICE Trans. Inf. & Syst.

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SUMMARYThe high-availability seamless redundancy (HSR) protocol is a representative protocol that fulfills the reliability requirements of the IEC61850-based substation automation system (SAS). However, it has the drawback of creating unnecessary traffic in a network. To solve this problem, a dual virtual path (DVP) algorithm based on HSR was recently presented. Although this algorithm dramatically reduces network traffic, it does not consider the substation timing requirements of messages in an SAS. To reduce unnecessary network traffic in an HSR ring network, we introduced a novel packet transmission (NPT) algorithm in a previous work that considers IEC61850 message types. To further reduce unnecessary network traffic, we propose an extended dual virtual paths (EDVP) algorithm in this paper that considers the timing requirements of IEC61850 message types. We also include sending delay (SD), delay queue (DQ), and traffic flow latency (TFL) features in our proposal. The source node sends data frames without SDs on the primary paths, and it transmits the duplicate data frames with SDs on the secondary paths. Since the EDVP algorithm discards all of the delayed data frames in DQs when there is no link or node failure, unnecessary network traffic can be reduced. We demonstrate the principle of the EDVP algorithm and its performance in terms of network traffic compared to the standard HSR, NPT, and DVP algorithm using the OPNET network simulator. Throughout the simulation results, the EDVP algorithm shows better traffic performance than the other algorithms, while guaranteeing the timing requirements of IEC61850 message types. Most importantly, when the source node transmits heavy data traffic, the EDVP algorithm shows greater than 80% and 40% network traffic reduction compared to the HSR and DVP approaches, respectively. key words: IEC61850, high-availability seamless redundancy, timing requirements, dual virtual paths, extended dual virtual paths, sending delay, delay queue, traffic flow latency, traffic reduction

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“…The frame stacks carry Generic Object Oriented Substation Events (GOOSE) that delivers real time and mission critical messages to the IEDs when the stacks of the GOOSE arrive at IEDs. Hence, it is important to reduce the network traffic and bandwidth [5][6][7][8][9][10].…”

Section: High Performance Communication Redundancy In a Digital Substmentioning

confidence: 99%

High performance communication redundancy in a digital substation based on IEC 62439-3 with a station bus configuration

Kumar

Das

Islam

2015

2015 Australasian Universities Power Engineering Conference (AUPEC)

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Abstract-High speed communication is critical in a digital substation from protection, control and automation perspectives. Although International Electro-technical Commission (IEC) 61850 standard has proven to be a reliable guide for the substation automation and communication systems, yet it has few shortcomings in offering redundancies in the protection architecture, which has been addressed better in IEC 62439-3 standard encompassing Parallel Redundancy Protocol (PRP) and High-availability Seamless Redundancy (HSR). Due to single port failure, data losses and interoperability issues related to multivendor equipment, IEC working committee had to look beyond IEC 61850 standard. The enhanced features in a Doubly Attached Node components based on IEC 62439-3 provides redundancy in protection having two active frames circulating data packets in the ring. These frames send out copies in the ring and should one of the frame is lost, the other copy manages to reach the destination node via an alternate path, ensuring flawless data transfer at a significant faster speed using multi-vendor equipment and fault resilient circuits. The PRP and HSR topologies provides higher performance in a digitally protected substation and promise better future over the IEC 61850 standard due to its faster processing capabilities, increased availability and minimum delay in data packet transfer and wireless communication in the network. This paper exhibits the performance of PRP and HSR topologies focusing on the redundancy achievement within the network and at the end nodes of a station bus ring architecture, based on IEC 62439-3.

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RURT: A novel approach for removing the unnecessary redundant traffic in any HSR closed-loop network type

Cited by 10 publications

References 7 publications

DVP: A Novel High-Availability Seamless Redundancy (HSR) Protocol Traffic-Reduction Algorithm for a Substation Automation System Network

DVP: A Novel High-Availability Seamless Redundancy (HSR) Protocol Traffic-Reduction Algorithm for a Substation Automation System Network

Extended Dual Virtual Paths Algorithm Considering the Timing Requirements of IEC61850 Substation Message Types

High performance communication redundancy in a digital substation based on IEC 62439-3 with a station bus configuration

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