智能变电站过程层网络端到端时延计算方法研究

End-to-end delay calculation method in process-layer network of smart substation

针对智能变电站过程层网络端到端时延计算问题,阐述了过程层网络报文传输时延组成部分和网络演算理论,分析了报文的排队处理过程,推导出准确而简化的信息端到端传输时延计算公式,明确了交换机处理数据帧的过程,提出了智能变电站过程层网络端到端时延的计算方法,并通过实例对智能变电站进行了算例分析。分析结果表明,智能变电站过程层网络端到端时延计算方法的计算结果,与通过OPNET搭建该模型的仿真结果极其接近,验证了所提出计算方法的准确性。

Aiming at the problem of end - to - end delay calculation in the process - layer network ot smart suosta- tion, the component of process - layer network message transmission delay and the network calculus theory are ex- pounded, the queuing process of the message is analyzed, the accurate and simplified information end - to - end transmission delay calculation formula is deduced. In this way, the process of exchange dealing with the data frame is clarified, end - to - end delay calculation method in process - layer network of the smart substation, and a case study is analyzed on the smart substation through examples. The analysis results show that the calculation results of end - to - end delay calculation method in process - layer network of the smart substation are very close to the simu- lation results of the model built by 0PNET, and the accuracy of the proposed method is verified.