Software implementation of two seamless redundant topologies in a digital protection system based on IEC 62439-3

Abstract

Abstract-Substations are the junctions of any transmission and distribution network in utilities. They carry bulk power to the customers using transmission network involving high voltage (HV) apparatus. Protection of HV equipment during a fault is the primary concern of an operator. Advancement in design and manufacturing of Intelligent Electronic Devices (IEDs) and IEC 61850 are finding increased application in utilities from automation and communication perspective, which addresses few shortcomings that couldn't be resolved in a conventional system. However there are few challenges in the digital scheme such as end to end delays in the packet transfer and interoperability of devices. Utilities are able to perceive these benefits by leveraging on IEC 62439-3 which has two important topologies i.e. Parallel Redundancy Protocol (PRP) and High-availability Seamless Redundancy (HSR). It offers seamless redundancy in digital protection network without compromising the availability and downtime cost. In this paper, an Optimized Network Engineering Tool (OPNET) is used to simulate and compare the performance of these topologies with respect to delay time.

Towards Latency Bypass and Scalability Maintain in Digital Substation Communication Domain with IEC 62439-3 Based Network Architecture

“…However, the findings did not support complementary modeling and simulations. S. Kumar et al [22] examined revenue for the typical 132/22 kV substation protection system from PRP and HSR implementation. Through simulation on the OPNET Modeler, the authors proved that while both protocols fulfilled the time limitation of the protection system in failure conditions, PRP had a slight advantage in latency performance.…”