Traffic flow calculation method for substation communication network

The efficient and reliable transmission of traffic flow in Substation Communication Network (SCN) is conducive to the safe and steady operation of Substation Automatic System. In order to calculate and analyze the SCN traffic flow efficiently, this paper proposes a traffic-flow distribution analytical model, where the transmission process of traffic flow in a branch is described as the mapping relationship between the input node and output node. Based on this mapping relationship, the transmission path of traffic flow and the topology structure of information communication network can be described. In addition, the fault event analytical model of communication network is presented to depict the possible fault scenarios in the traffic-flow transmission process. Furthermore, a stochastic network calculus theory is employed to construct the architecture of the end-to-end delay analysis of traffic-flow transmission, and is used to evaluate the traffic-flow transmission performance in SCN. In the scenarios, by comparing the related mathematical calculation which is developed by classical network performance analysis software OPNET (Optimized Network Engineering Tool) as well as the model and performance analytical method proposed in this paper, the rationality of the traffic-flow distribution analytical model is verified and the effectiveness of proposed performance analytical method is confirmed.