交换机流量限制技术及其在智能变电站的应用

Rate Limiting Technology of Switch and Its Application in Smart Substation

交换机具备的流量限制和风暴抑制功能,在智能变电站网络中具有重要的应用价值。在分析智能变电站网络结构、报文类型和流量特征基础上,论述了过程层网络化带来的问题和解决思路。介绍了现有交换机风暴抑制功能及其不足,提出了智能变电站网络流量限制应具备的功能。基于交换机数据处理流程,详细分析了基于内容感知处理器(CAP)的流量限制技术及其特点。通过搭建智能变电站三网合一网络仿真测试环境,验证了基于CAP的流量限制方案,并展望其在智能变电站的应用前景。

Switch supports rate and storm limiting functions,which have significant application value in the smart substation network.Based on an analysis of network structure,message types and the flow characteristics of the smart substation,problems brought about by the networked process layer and their solutions are discussed.The storm limiting function and its inadequacy are described,and the functional requirements for rate limiting of smart substation network are proposed.In accordance with the data processing flow chart of the switch,the rate limiting technology based on the content aware processor(CAP)and its features are analyzed in detail.The rate limiting solution based on CAP is verified through tests in the simulation environment of three-in-one net for smart substation.The prospects for application of the rate limiting solution in smart substation are discussed.