智能变电站MMS、GOOSE、SV三网合一通信过载隔离抑制策略

Overload isolation and control strategy of smart substation MMS, GOOSE, and SV three-in-one communication network

在新条件下充分利用现有设备,尽力降低成本基础上,提出了针对智能变电站MMS、GOOSE、SV三网合一通信过载致命性故障的隔离抑制策略。采用简化拓扑,二层动态协议(IEC62439、私有环网、环路检测、STP/RSTP/MSTP、GMRP、IGMP Snooping),静态配置(VLAN、组播、三层路由、策略路由、ACL),过载监测,过载处理结合应用提高网络可靠性,分析了组合VLAN、三层交换、策略路由的隔离拓扑,策略路由支持核心交换机的负载分担,简化了保护测控装置的通信设计和配置。发明了通信设备创新性过载监测阻断解决方法,改变了传统抑制单一手段。分析了动态协议和静态配置在三合一网络中不足和优点,根据智能变电站等级和可靠性要求选用不同隔离策略。通信设备监测到过载时,先自恢复处理,通过硬接线告警,本地记日志,同时MMS发送网络告警信息到监控主机。若不能自恢复则进行过载隔离,切割降低过载影响范围,管理员及时干预处理。

Making full use of existing equipment under the new conditions, and trying to reduce the cost, this paper proposes the isolation and control strategy for smart substation MMS, GOOSE, SV three-in-one communication network overload fatal fault. Combined with the use of the simplified topology, dynamic layer two protocol （IEC62439, PrivateLoop, LoopDetection, STP/RSTP/MSTP, GMRP, IGMPSnooping）, static configuration （VLAN, multicast, layer three routing, policy routing, ACL）, overload monitoring and overload control, the reliability of network is improved. The combined VLAN, layer three switching, policy routing isolated topology, policy routing support core switch load balance is analyzed, the communication design and configuration of measuring and protective device are simplified. The communication equipment innovation overload monitoring and blocking solution is developed, which changes the traditional single means of suppression. The problems and advantages of dynamic and static configuration in three in one network are analyzed, and according to the levels and reliability requirements of smart substation, the different isolation strategies are selected. If the overload is monitored by communication equipment, first overload self recovery treatment is made, and by using hard wiring alarm and local log, the alarm information is sent to the monitoring host via MMS network simutaneously. If self recovery is failed, overload isolation is adopted to try to reduce the influence range of overload, waitting for the timely treatment of administrator.