This paper is about the study on the debugging and maintenance of substation automation system the author analyzes and compares the present debugging interface of microprocessor - based protection relays through summarizing the debugging and maintenance of routine substation automation system ， indicates the advantage of software debugging interface based on the pc in allusion to the characteristics of the distributed substation automation system ， the author presents the design idea of programming the debugging software for the intelligent devices ， the monitoring station and the communication network based on the object - oriented programmable technology this method may simplify the workload of debugging and maintenance of substation automation system greatly ， shorten the time limit for building and debugging of substation automation system and improve the security and the stability of system ， therefore it is of great useful value 作者通过归纳总结常规变电站自动化系统的调试方法和维护手段，分析比较了现有的微机保护调试界面，指出了基于pc机的软件化调试界面的优越性。针对分层分布式变电站自动化系统的特点，提出了利用面向对象编程技术，编制间隔层智能装置和变电站层监控系统及通讯网络层报文监视的智能化调试软件的设计思想。该方法可大大简化变电站自动化系统的调试和维护工作量，进一步缩短变电站自动化系统的安装调试工期，提高系统运行的安全性与稳定性，具有很大的实用价值。
