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.
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.
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,
Parallel Redundancy Protocol or “PRP” is a field-upgradeable Ethernet network resilience solution available on the OrionLX with the High Performance “CPX” CPU. With PRP, Ethernet messages are transmitted over two parallel network paths. If either network fails, the message still gets through without delay. PRP is also protocol independent making it an excellent choice for enhancing existing automation designs.
At DistribuTECH 2017, NovaTech is exhibiting the new Orion I/O™ for substations. It delivers NERC CIP-compliant security, the highest I/O density (up to 64 in 2 RU) and the lowest cost per point (under $20). Orion I/O is a member of the OrionLX™ family, which means the right combination of flexibility and ease-of-use.
Rep. Kevin Yoder (3rd Congressional District of Kansas) presented NovaTech a letter of recognition from and an American flag that flew over the Capitol. This award was in recognition of shipping over 20,000 American manufactured products worldwide.
With the rapid adoption of the IEC 61850 standard by many US-based utilities, Distributed Event Recorders are becoming easier to create. Bruce’s presentation explains why the application of fault recorders could…
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.
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.