广珠线电力SCADA系统故障分析处理及通信组网优化建议

Fault Analysis and Treatment of Electric Power SCADA System in Guangzhou-zhuhai Line and Optimization Proposal of Its Communication Network

广珠线电力SCADA系统采用了逐级汇聚的环形通道结构进行通信,任意一个站点产生环路都极易形成网络风暴,导致全线业务不通。在故障处理时,打开以太网板RMON性能开关,分析实时网络数据,即可发现存在大量广播包等异常数据;消除网络风暴应立即甩开所有用户站点(含环路站点),并硬复位以太网板断开环路。鉴于广珠线电力SCADA系统通信组网方式存在缺陷,提出了3种较为安全可靠、实用性强的优化方案。

The Guangzhou--Zhuhai line power SCADA system uses a funnel annular channel structure step by step to communicate, when any one site produces loop network, it is easily to form storm leading to all business blocked up. When handling the fault, we open the etheric RMON performance switch, analyze real-time network data and find that there are a large hum ber of abnormal data such as broadcast packets. In order to eliminate network storm , it should immediately cut off all user site （including loop site） and make a hard reset of the etheric halftone to disconnect loop. Given the Guangzhou--Zhuhai line power SCADA system deficiency in the communication network mode, the paper puts forward three kinds of comparatively safe and reli able, practical optimization scheme.