摘要
针对智能变电站的通信网络冗余问题,分析IEC 62439-3中的并行冗余协议(parallel redundancy protocol,PRP)及高可用性无缝环网(high-availability seamless redundancy,HSR);根据两者相同的报文转发特点,提出在操作系统层面实现冗余协议的网桥方法;设计并实现Linux系统下网桥结构的PRP/HSR网络驱动方案。该方案在内核设计实现虚拟网桥及其虚拟端口;通过控制虚拟端口与物理端口之间的报文转发,实现报文的冗余处理。测试表明:该方法能实现PRP/HSR协议的零冗余恢复时间,经济有效地解决智能变电站站控层网络冗余问题,可提高网络通信的实时性和可靠性。
In allusion to the redundancy problem of intelligent substation network, the parallel redundancy protocol（PRP） and high-availability seamless ring（HSR） in IEC 62439-3 are mainly analyzed. According to their same packets forwarding feature, a bridge method of realizing redundancy protocol at operating system level is proposed, and the PRP/HSR network driver of the bridge structure in Linux system is designed and implemented. The network driver designs a virtual bridge and its virtual port, and processes redundancy packets by controlling the packet forwarding between the virtual port and the physical ports. The test of it shows that this method can realize zero redundancy recovery time of PRP/HSR protocol, and solve the redundancy problem of the station level network of intelligent substation more economically and effectively, and it can improve the real-time and reliability of the network communication.
出处
《智能电网》
2016年第6期582-586,共5页
Smart Grid
