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.

    December 13, 2017 – December 14, 2017 Jeddah Hilton Hotel - Saudi Arabia

    Saudi Arabia Smart Grid Conference – Booth 56 – 58

    NovaTech will be represented at the Saudi Arabia Smart Grid Conference on Smart Grid and Renewable Energy (SASG 2017). The purpose of the event is to bring together researchers, designers, developers and practitioners interested in the advances and applications...

    January 23, 2018 – January 25, 2018 San Antonio, Texas

    DistribuTECH 2018 – Booth #2135

    NovaTech will exhibit at the 2018 DistribuTECH in San Antonio, Texas from January 23 - 25. Please come visit us in Booth #2135 to see our latest product offerings.

  • 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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