利用局域网延伸技术实现监控系统远程诊断

Long-rang diagnosis for supervisory control system over local network extending

针对常规Modems拨号对电力监控系统远程诊断由于受通信速率、通道干扰等因素影响往往只能实现简单的查看等功能,而难以真正实现系统的远程维护,提出利用局域网延伸技术实现远程诊断,分析了利用网络延伸技术的要点以及通信结构,并对实现过程中需要解决的网络延时、转换接口、通道介质等关键技术以及网络安全问题进行解释。以太网式远程诊断系统的应用,有效地提高了监控系统的维护水平,使得系统故障得以及时的处理,提高了处理故障的效率。

Routine power supervisory control system long-range diagnosis is achieved by the modems distance dialing, due to communications rate, channel interference factors ,it can only achieve some simple function and is difficult to accomplish the long-range maintenance really.This paper proposes to use local network extending technology to achieve long-range diagnosis, it analyzes the elements of using the extending technology and the communications structure, and explains the network delay, conversion interfaces, media access technology and the key issue of network security.The Ethernet long-range diagnosis system effectively enhances the level of system＇s maintenance, timely process system fault and improve the efficiency of the fault.