A Review Reliability and Availability Analysis of IEC 61850 Based Substation Communication Architectures

Abstract

Modern Ethernet technology's high-speed capabilities enable efficient data transfer, and its leadership in the LAN space further distinguishes Ethernet as an intriguing communication method. For important substation automation applications to operate successfully, communications must meet cost, performance, and reliability requirements technology for substation automation management. The IEC 61850 standard was published by the International Electro-Technical Commission (IEC) to provide interoperability among enterprise substation automation systems for communication networks within power substations. This standard specifies Ethernet-based communication systems for substation automation systems (SAS). With the aid of Ethernet switches, Ethernet offers versatility in terms of configuring different designs. On the other hand, before using appropriate Ethernet architectures for critical applications in substations, they must be assessed for availability and reliability. This study uses the reliability block diagram (RBD) approach to analyse the availability and reliability evaluation of practical Ethernet Cisco device topologies. With a typical transmission substation in mind, dependability block diagrams for intra-bay and inter-bay communications have been created. Additionally, the dependability and accessibility of the actual Ethernet topologies have been compared, and some recommendations have been derived from the findings. These recommendations include the following Index Terms: substation automation systems (SAS), availability, IEC 61850, smart electronic device (IED), and dependability.