Case Study: MPLS Teleprotection with Fiber & Microwave Backhaul

The need for fast and reliable communications is paramount for piloted teleprotection relaying schemes and there are challenges when implementing these channels while relying on statistical multiplexing. How do channels perform over a packet-based network with a mixture of fiber and wireless backhaul? What happens if transport links become overloaded, or microwave is the only option? These are design challenges for utilities to face with the understanding that unaccounted factors or mistakes on teleprotection circuits can create visible negative impacts on the reliability of the bulk electric system.

This case study offers a view into the architectural decisions and operational successes of teleprotection circuits deployed within a utility packet transport network. We explore how teleprotection transport over packet has matured from initial pilots to a standard deployment across the network. We address key decisions that shaped the architecture for deployment over fiber and wireless paths. We share deployment experiences that solidified and tested the approach's resilience. We share considerations for deploying new teleprotection channels and steps to streamline the process.