基于时间敏感网络的变电站通信网络低时延控制方法

Low Time Delay Control Method of Substation Communication Network Based on Time Sensitive Network

以降低变电站通信网络时延为目标,基于时间敏感网络设计了一种低时延控制方法。首先,在变电站通信网络的站控层和过程层中,利用时间敏感网络交换机组建时间敏感子网络,再将不同交换机终端辨识为多个线性参数模型。然后,利用模糊控制方法控制交换机同步时钟的误差,根据模糊C均值聚类方法确定低时延控制的模糊规则前件,利用时间敏感网络的参数辨识获取模糊规则后件。最后,依据模糊控制前件与后件,结合模糊控制与广义预测控制,实现时间敏感网络时延的反馈校正。实验结果表明,采用该方法控制变电站通信网络时延量后,网络通信最大时延被控制在100μs以内,最大时延抖动被控制在20μs以内,说明该方法有效实现了设计预期。

With the goal of reducing the delay of substation communication network,this paper designs a low delay control method based on time sensitive networks.Firstly,in the station control layer and process layer of the substation communication network,time sensitive network switches are used to construct time sensitive subnetworks,and different switch terminals are identified as multiple linear parameter models.Then,fuzzy control method is used to control the synchronization clock error of the switch,and fuzzy rule antecedents for low latency control are determined based on fuzzy C-means clustering method.Fuzzy rule antecedents are obtained through parameter identification of time sensitive networks.Finally,based on the pre and post components of fuzzy control,combined with fuzzy control and generalized predictive control,feedback correction of time sensitive network delay is achieved.The experimental results show that after using this method to control the delay of the substation communication network,the maximum delay of network communication is controlled within 100μs,and the maximum delay jitter is controlled within 20μs,indicating that this method effectively achieves the design expectations.