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变电站自动化系统中嵌入式Web服务器的设计与实现
引用本文:金敏,周翔,徐田军,王传启.变电站自动化系统中嵌入式Web服务器的设计与实现[J].电力系统自动化,2002,26(18):65-69.
作者姓名:金敏  周翔  徐田军  王传启
作者单位:烟台东方电子信息产业股份有限公司,山东省烟台市,264000
摘    要:针对传统Web技术路线方案用于构造变电站自动化系统中Web服务器存在的困难,提出应用嵌入式技术开发变电站自动化系统中嵌入式Web服务器的基本思想。文中结合变电站监控系统产品开发实例,介绍了嵌入式Web服务器的功能,给出了系统基于3层B/S结构的瘦Web服务器体系结构,详细阐述了嵌入式Web服务器实现的一些关键技术,包括:采用自定义数据点标记使得网页设计与服务器程序分离,系统具有灵活性和可扩展性;提出数据点基于“点”和基于“面”的双重复用技术,满足嵌入式Web服务器的有限资源约束;集成嵌入式JavaApplet和JavaScript实现中间代理机制,解决了变电站自动化系统中大量数据点实时动态刷新的问题;采用PPP链路提供远程访问接入服务和发送电子邮件等。变电站自动化系统这种基于嵌入式Web服务器的远程监控维护方式可以有效降低系统监控运行维护成本、提高监控运行维护效率,具有很大的应用前景和推广价值。

关 键 词:嵌入式Web服务器    变电站自动化系统    自定义标记    数据点复用    嵌入式Java    PPP
收稿时间:1/1/1900 12:00:00 AM
修稿时间:1/1/1900 12:00:00 AM

DESIGN AND IMPLEMENTATION OF EMBEDDED WEB SERVER IN SUBSTATION AUTOMATION SYSTEM
Jin Min,Zhou Xiang,Xu Tianjun,Wang Chuanqi.DESIGN AND IMPLEMENTATION OF EMBEDDED WEB SERVER IN SUBSTATION AUTOMATION SYSTEM[J].Automation of Electric Power Systems,2002,26(18):65-69.
Authors:Jin Min  Zhou Xiang  Xu Tianjun  Wang Chuanqi
Abstract:Aimed at the difficulty of applying traditional Web technology to construct Web server in substation automation system, a new ideology of adopting embedded technology to develop embedded Web server in substation automation system is proposed. With an example of developing a substation automation system product, the function and architecture of embedded Web server are presented. The key realization technologies are described in detail, which include using custom tags to separate page designing from server programming for the flexibility and expandability of system, putting out the double reuse based on point and page to satisfy the constraint of limited resource in embedded Web server, integrating embedded JavaApplet and JavaScript to implement the broker for real time update of lots of data points in substation automation system, adopting point to point protocol (PPP) link to provide remote access service and E mail transmission etc. The remote monitor and control mode based on embedded Web server in substation automation system will decrease system running cost and improve maintaining efficiency, which has wide application prospect and popularization value.
Keywords:embedded Web server  substation automation system  custom tags  data  point reuse  embedded Java  point  to  point protocol
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