数字化变电站动态组播测试研究

Dynamic multicast model and test in digital substation

分析了基于数字化变电站内交换机、监控主机、测控装置、保护装置、合并单元的IGMP Snooping和GMRP动态组播实际应用环境,描述了模型中各模块的功能,比较了两种动态组播模型的应用环境和优缺点。制作了基于WinPcap的动态组播软件测试包,向交换机发送模拟的IGMP Snooping和GMRP操作报文,可以对IGMP Snooping和GMRP两种协议进行测试,并且给出了各自的测试用例。测试结果对于提高数字化电力信息以太网络的安全可靠运行有重要参考意义。说明使用WinPcap来进行IGMP Snooping和GMRP报文收发可以较好地测试数字化变电站的动态组播性能。

This paper analyzed IGMP Snooping dynamic multicast model and GMRP dynamic multicast model based on switchs： the monitoring host computers, measuring and controlling devices, protection devices, merging units in digital substation, described the function of each module, and compared two dynamic multicast model application environment and the advantages and disadvantages. Dynamic multicast testing software was programmed based on WinPcap and some test cases were given. These experiments are important to improve the security and reliability of power information network in digital substation. This article illustrates dynamic multicast performance of digital substation can be test by sending and receiving ]GMP Snooping and GMRP message made by WinPcap.