摘要
星形GOOSE网可有效防止网络雪崩的发生,但在调试过程中该类型网络的某厂家智能终端却发出"网络风暴"告警,伴随着GOOSE网报文倍增现象。文章详细描述了该事件发生时GOOSE网的异常现象,介绍了故障的查找及排除过程。对该事件的形成原因进行了深入分析,网络管理系统不正当接入、设计图纸不完善、厂家智能设备对网络异常状态检测不准确、现场作业管理不严格等原因共同酿造了此次事件。最后,给出了整改方案,并从优化VLAN划分、制定运行检修规程等角度出发提出了防范措施。
Star GOOSE network can effectively prevent network avalanches, but a ＂network storm＂ alarm was sent by a certain intelligent terminal in this type of network during commissioning, with multiple GOOSE packets. The detailed abnormal phenomena are described when this GOOSE network event occurred, and the process of detection and elimination of the fault is introduced. The in-depth analysis restllts show that the main causes resulting in this event are illegal access of the network management system, imperfect design paper, inaccurate network anomaly detection of the intelligent equipment, and undemanding on-site operation management. Finally, an improvement scheme is given, and preventive measures are proposed from the perspectives of optimization of VLAN division, and the formulation of operation and maintenance specifications.
出处
《电力信息与通信技术》
2014年第2期120-124,共5页
Electric Power Information and Communication Technology
