Optimizing Substation Communication: A Time-Sensitive Networking Approach for Addressing Real-time Transmission Demands

As substations become increasingly intelligent, a growing disparity arises between the surge in network traffic and the real-time transmission demands of critical communication services. Time-Sensitive Networking (TSN) offers the capability to shape, schedule, and synchronize data flows, thereby enhancing the transmission quality of time-critical services. We propose a TSN-based intelligent substation traffic scheduling scheme. The transmission delay boundary of substation messages under TSN is calculated based on network calculus theory. The Omnet++ network simulation platform is used for case analysis. Simulation results reveal that, with static configuration of gate control lists, this traffic scheduling approach ensures ultra-low latency and zero jitter for sampled value message transmissions, while concurrently ensuring real-time transmission for all other communication services.