In this paper, Moxa examine existing substation topologies and possible integral and scalable methods to achieve efficient redundancy with PRP (parallel redundancy protocol) and HSR (high-availability seamless redundancy). An optimized IEC 61850 PRP/HSR architecture should provide scalable integration for easy modification of functionalities and extension of the substation. Upgrading SANs (single attached nodes) and DANs (dual attached nodes) to a PRP/HSR network will require an efficient and cost effective solution in order to construct a seamless/bumpless communication infrastructure to ensure maximum system availability.
Some of the first power substations in the 1920’s were simple adaptations of devices used for monitoring and control of electrical systems. In today’s complex substation automation industry, network and system reliability is paramount in ensuring onsite safety and consumer quality of service. One solution to ensure highly - reliable system communication is to implement network redundancy without the impact from a single point of failure. In this article, we will examine existing substation topologies and possible integral and scalable methods to achieve efficient redundancy with PRP (parallel redundancy protocol) and HSR (high - availability seamless redundancy).
With IEC 61850-compliant devices specifically calibrated for PRP and HSR redundancy, seamless control and monitoring can be achieved by using a cost-effective hybrid network topology.