The Research And Development Of Grid Environment Monitoring System Based On WLAN

The work to monitor power grid environment is the important means to implemente the power grid environmental conservation. In order to monitor and control power grid environment's sensitive points located in different places efficiently , accurately and real-time dynamically, a grid environment monitoring system is needed which is stable, efficient, easy to expand, and has good processing ability, friendly interface.After studing the power grid monitoring system at home and abroad well, according to the actual needs of environmental monitoring, a solution about power grid enviroment monitoring system based on wireless LAN and ARM + Linux embedded operating system is proposed. The power grid environment monitoring terminal platform is builted by using high-powered ARM(S3C2440) chip and embedded Linux operating system. According to monitoring terminal's hardware platform, embedded Linux kernel 2.6.32.2 is cut and transplanted; the root filesystem yaffs is built; A/D driver, USB wireless LAN interface driver and other drivers are transplanted and developed. Monitoring terminal application is realized. The monitoring terminal gathers and processes power grid environment message by receiving orders from the monitoring center, and transmits the grid environment information to the remote monitoring center through wireless LAN..NET platform and SQL Server 2005 database are adopted to design the power grid environment monitoring center. In order to manage and control so many monitoring terminals, entrust technology, .net technology and Socket asynchronous communication technology are used. The power grid environment monitor center mainly includes monitoring information management module, network communication module, monitoring terminal management module, monitoring orders management module and real-time monitoring management module. It can realize large-scale network monitor, real-time draw the line chart of monitoring terminal and modify, inquiry, statistic power grid monitoring information.Tests show that the system has been slightly influenced by power grid environment and communicates smoothly and efficiently; the monitoring terminal can be conveniently cut and expanded according to actual needs; it is simpely and neatly to create power grid environment monitor node; the monitoring center has friendly interface and can well realize multi-point monitor for a good deal of terminals.