PRP Redundant Ethernet

PRP Redundant Ethernet

PRP Redundant Ethernet


Parallel Redundancy Protocol (PRP) and a field-installable redundant Ethernet board provide a higher level of network resilience for OrionLX units collecting critical data and controlling apparatus in electric utility substations. Scalable to any system size, the OrionLX PRP Redundant Ethernet solution is an addition to a suite of OrionLX features for redundancy: dual redundant power supplies, seamless primary/secondary IED management, SCADA comms failover and extensive field diagnostics.

About PRP

PRP is a standards-based international protocol (IEC 62439-3 Clause 4) that allows seamless Ethernet communication in the face of a single network disruption (such as a cable, driver, Ethernet controller failure or Ethernet switch failure). PRP is one of the two most commonly implemented Redundant Ethernet network protocols in substations, the other being High-Availability Seamless Ring (HSR).

PRP has ZERO packet drops when communication is disrupted, which is important for multicast / broadcast protocols where the receiver has no way to ask the sender to re-try if nothing is received. PRP operates independently of the protocol being transmitted (DNP3 TCP, Modbus TCP, 61850, etc.), has no time delay for switchover and recovery, requires no special configuration and does not rely on other higher layer protocols to operate. Networks can combine PRP IEDs and non-PRP IEDs.

In contrast to HSR Ethernet, PRP redundancy uses off-the-shelf switches, allows single Ethernet port devices to communicate (without redundancy), and is scalable to any system size without performance degradation.


Redundant Ethernet Board

PRP is implemented in the OrionLX in combination with a field-upgradeable dual Ethernet communications card (model number code PRPC). The unit must also be running with the OrionLX High Performance CPU.

  • TechTalk Summer 2017  

    Orion I/O Upgrade Assemblies for D20 I/O Modules
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    Split-Core CT Option in M872

    August 2, 2017

  • TechTalk Fall 2017  

    Bitronics Pole Top Power Monitor
    Orion Active-Standby Redundancy
    Orion I/O Update (new Model # Generator, and new video)
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    November 15, 2017

  • Orion Products Overview Brochure  

    The Orion Family of Substation Automation Platforms and I/O perform an expanding array of automation and security applications in electric utility substations, with minimal setup and maintenance. A single Orion can replace multiple legacy boxes in a substation, reducing hardware, design, wiring, and panel costs.

    December 6, 2017

  • NovaTech Orion I/O  

    NovaTech Orion I/O™ is an extension of the family of OrionLX™ Automation Platforms for substation automation and incorporates the same security features, software tools and “NCD” configuration as the OrionLX. It is a rack-mountable I/O assembly with four slots—A, B, C, and D—that can be filled with any combination of I/O cards: currently 16-Point Discrete Input Card,

    August 16, 2017

  • TechTalk Winter 2017  

    DistribuTECH 2017 Edition
    Orion I/O Advertisement Spotlight
    PRC-002 Compliance Literature

    January 10, 2017

  • TechTalk Fall 2016  

    Product Update: Configuration Backup Manager
    New Pre-Drawn Image Library
    Quickly Add Automation to an Older E/M Relay Substation
    IEC 61850: More Than Just a Protocol

    November 3, 2016

  • Additional Datasheets, Application Notes, Customer Success Stories and other documents in our documentation library

  • NovaTech Utility Systems and Services

    Almost half of NovaTech’s business is in Systems and Services including web page design, panel design, math and logic development, Orion configuration, and onsite installation and commissioning. Mark Matassa explains how our engineers can work with you to reduce project execution time at the 2016 DistribuTECH Conference and Exhibition in Orlando, Florida.

    March 18, 2016

  • 61850, PRP, and Merging

    Industry expert Bruce Muschlitz discusses the latest 61850 standards and applications, the components and performance of a PRP system, and the emerging role of Process Bus and Merging Units at the 2016 DistribuTECH Conference and Exhibition in Orlando, Florida.

    March 18, 2016

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