应用ATM网络实现电力系统远程实时监控

提出了电力系统实时决策系统中超远程强实时通信的设计与实现方法，在网络拓扑上采用星形的多智能客户机组／中央服务器群集模式；网络物理载体采用能够提供高带宽和极短时延的基于光放大技术的同步光纤网；在通信方式的选择上，采用基于无确认的方式并且能够提供良好的实时服务的兼容性的ATM技术，通过对可靠性和实时通信时延进行精确估算，表明采用此设计方式，可以满足电力系统实时决策和紧急控制对上千千米超远程通信的可靠性和实时性要求。

IMPLEMENTATION OF REMOTE REAL-TIME SUPERVISORY CONTROL WITH ATM NETWORKS

This paper proposes a novel solution to implementing real-time communication over a long distance in a real-time control and analysis system for power systems. It is shown that the topology of network should be based on star-connection and adopt Fat-Client/Server paradigm. The physical layer of communication networks should use SONET which can provide enough bandwidth. The technology of optical amplification should be adopted to eliminate communication bottleneck that occurs during the opto/electronic conversion in optical repeaters. To satisfy the QoS requirement, the Asynchronous Transfer Mode (ATM) switching technology, which can provide excellent real-time transmission service, should be chosen. After carefully estimating the possibility of data loss and calculating the delay of communication, it is concluded that by using this solution, the requirements for real-time characteristic and reliability can be met.