摘要
针对现阶段智能变电站实现通信冗余所存在的问题,简要分析IEC 62439-3标准提出的并行冗余协议(parallel redundancy protocol,PRP)和高可用性无缝环网(high-availability seamless redundancy,HSR)原理。由于PRP/HSR具有无缝切换的明显优势,提出基于Linux内核Netfilter框架的PRP/HSR冗余网络实现方案。在现阶段站控层组网过程中,单连接节点(single attached node,SAN)主要采用冗余盒接入网,该设计方案利用Netfilter框架的数据转发机制实现冗余,可避免使用冗余盒,以提高智能变电站通信网络组网的经济性和可靠性,为IEC 62439-3在智能变电站中的推广提供支持。
Aiming at solving the existing problem in the realization of communication redundancy by intelligent substation, this study briefly analyzes the principle of parallel redundancy protocol（PRP） and high-availability seamless redundancy（HSR） proposed by IEC 62439-3 standard. The research puts forward an implementation scheme of PRP/HSR redundancy network based on the Netfilter framework in Linux kernel due to the obvious advantages of seamless switching of PRP/HSR. At present, a single attached node access network mainly depends on redundancy boxes. In order to improve the reliability and economy of communication networking in intelligent substation, the design scheme in this research uses the data forwarding mechanism of the Netfilter framework to achieve redundancy and avoid using redundancy box in the process of building the station control layer network. It will provide support for the promotion of IEC 62439-3 in the intelligent substation.
出处
《智能电网》
2016年第2期213-216,共4页
Smart Grid
