一种换流站网络故障定位方法研究  

Research on a method of fault location for converter station

作　　者：张泰 李泳龙 ZHANG Tai;LI Yong-long(State Grid Sichuan Electric Power Research Institute,Chengdu 610000,China)

机构地区：[1]国网四川省电力公司电力科学研究院

出　　处：《电子设计工程》2019年第12期52-56,61,共6页Electronic Design Engineering

摘　　要：针对四川某±800kV换流站由于网络故障而频繁告警甚至导致双极闭锁这一问题,开展换流站网络架构调研和通信协议分析,介绍了换流站典型的三层网络系统架构,在网络压力测试的基础上,进一步提出了换流站内网络系统故障定位方法,通过在被测交换机设置镜像端口,利用网络数据包获取软件(wireshark、FIDDLER、Hping等)对数据包进行捕获,再过滤掉符合换流站通信协议的数据包进行分析,采用从两头(顶层和底层)到中间层的反推故障分析方法,层层分析并排除掉正常设备,最终定位故障点。Aiming at the frequent warning and even bipolar blocking of a converter station due to inner network system failure,the typical three-tier hierarchy of converter station is introduced,a network pressure test program is presented and a fault location method for network system is further proposed,.By using the wireshark software to capture and analyze the data packets,using the reverse network fault analysis method from the two ends(top and bottom)to the middle layer,it analyzes the transport protocol and packets layer-by-layer and exclude the normal devices,and finally locate the point of failure.

关 键 词：特高压直流换流站 网络压力测试 网络传输协议 数据包捕获 端口镜像 

分 类 号：TN914[电子电信—通信与信息系统]