基于WLAN的变电站监控系统的研发

Research and development of substation monitoring system based on WLAN

无线局域网(WLAN)具有可靠性高、数据传输速率快、通信安全性好和移动性强的基本特点,是应用于难于布线、频繁变化、专门工程等场合的主要无线通信技术。在对比分析几种通信方式的基础上,构建了以无线局域网为主要通信载体的变电站监控系统。该系统遵循IEEE802.11规范,无线电波工作在2.4 GHz频段,采用DSSS直接序列扩频方式,同时局部应用了超宽带技术,从而保证了系统运行的可靠性。

Wireless local area network （WLAN） has many basic characteristics of high reliability, fast data transfer rate, safe communication and strong mobility. So it is main wireless communication technology used into the applications of hard wiring, frequent changes and specialized engineering. Based on the analysis of several kinds of communication modes, the substation monitoring system was built by using WLAN as the main communication carrier, following the IEEE802.11 standard. The radio waves worked at 2.4 GHz frequencies, adopting direct sequence spread spectrum method and applying the UWB technology in local. Thus it ensures the reliability running of the system.