Reliability Guarantee Mechanism and Flat Communication Protocol Structure for Power System Protection Communication Networks in Energy Internet

摘要

In order to satisfy requirements of safe and stable operations for complicated wide area power systems in Energy Internet, the concept of power system protection is proposed to fulfill high-accuracy, panoramic-awareness, multi-scene, whole-process and real-time intelligent decision for power systems. To support its function, communication network is essential. However, currently, protocol structure and reliability guarantee mechanism for power system protection communication network have not been determined. Aiming at this problem, combined with the advanced Software Defined Networks (SDN), this paper firstly proposes an evolved and flat protocol solutions for the communication network based on previous power system protection requirement. Then, reliability guarantee mechanism based on high dependability for this communication network is introduced, which includes service classification strategy, service control and service scheduling. To support above flat communication structure and reliability structure, a SDN-based flat scheduling analysis and test system is developed to verify its efficiency. Results show that the flat architecture reliability mechanism can satisfy system protection services well.