Abstract
In order to keep pace with the development of IEC61850-based intelligent and digital power grid technology, a high-performance communication network must be configured in the process of electrified railway traction substation digitization to achieve the various functions of the substation automation system (SAS). First of all, the structure of communication network in a digital traction substation and the category of different data flow in it are analyzed in this paper. Secondly, the part of packet end-to-end delay (ETE Delay) is specifically discussed. In the last place, by using OPNET, a dynamic network modeling and simulating software, the networks both in substation level and process level is simulated and researched. The results show that the network built in this article can meet the real-time requirements of IEC61850.
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