Analysis of Latency Characteristics of Wind Farm Communication Network Based on Time-Sensitive Networking

In view of complex factors such as wide range of data collection and many types of data, there are defects existing in the communication relying on traditional Ethernet such as mutual effects of multi information streams, bad instantaneity of data transmission and so on, thus the demand of realtime communication cannot be satisfied. To improve such situation, a communication network deployment scheme based on time-sensitive networking (TSN) was proposed. Firstly, combining with communication network for wind power system and its data the working principle of TSN technology was analyzed, and according to the principle of TSN a network calculus-based improved end-to-end propagation delay computing model was derived. Secondly, by means of calculating example, the influences of such parameters as door opening time and dispatching cycle, etc., on latency index were analyzed. Finally, the contrastive analysis on latency differences between TSN and traditional Ethernet were performed. Results of this research show that by means of rational configuration of parameters, TSN possesses the characteristics of predictability and low latency, thus it provides theoretical foundation for the deployment of high efficient wind farm communication network and optimal allocation of network resources.