IP组播技术在监控系统中应用  

IP multicast and its application in SCADA system

作　　者：林长望[1] 林建泉[1] 李伟华[1] 余丹[1] 

机构地区：[1]西南交通大学电气工程学院,四川成都610031

出　　处：《电力自动化设备》2006年第2期73-75,79,共4页Electric Power Automation Equipment

摘　　要：目前,数据采集和监控SCADA(SupervisoryControlAndDataAcquisition)系统中的数据通信采用以太网技术的实时网络具有高带宽、低误码的特点,但是在通信量很大时会造成网络拥挤、延迟增大、数据丢失等现象,提出采用IP组播通信方式解决上述弊端。在介绍IP组播技术的基础上,论述了组播技术在SCADA系统中的通信方式,设计一个组播通信中间件,建立报文接收和重传机制,确保信息收发的实时性、可靠性。IP组播信息技术在SCADA系统通信中效果良好。The Ethernet-based real-time data communication metwork of SCADA（Supervisory Control And Data Acquisition）system possesses high band width and low error,but results in network congestion,communication delay and data loss when communication traffic is heavy. The IP muhicast communication mode is applied to avoid it. IP multicast technology is introduced and its communication mode in SCADA system is discussed. With a communication middleware designed, the message receiving and retransmitting mechanism is established to ensure the real-time and reliable communication. Practice shows its good perfotmance in SCADA system.

关 键 词：IP组播 SCADA 实时性 可靠性 

分 类 号：TM73[电气工程—电力系统及自动化] TN914[电子电信—通信与信息系统]