变电站自动化系统中一种新智能测控装置设计

Design of an intelligent measurement-control device in the substation automation system

介绍了变电站自动化系统一种基于 80C196KB控制CPU设计的新型线路单元测控装置 .它能完成一条线路的遥测、遥信、遥控和遥脉功能 .模拟量测量采用基于快速傅里叶变换的交流采样算法 ,测量精度高 .与上位机的通信提供多种选择方式 ,人机交互采用点阵液晶显示及薄膜式键盘 ,开关量状态、脉冲量的采集以及控制输出都采用二次隔离技术 ,并采用了先进软件抗干扰技术 ,遥控操作可靠 .

Based on substation feeder monitoring unit the latest AC sampling algorithm with improved accuracy was adopted in the new generation of 80C196KB microprocessor. The utilizing of two CANBUS redundancy structure to communication with its host resulted in better reliability. Lattice liquid crystal display with filmy keyboard and menu display technique were used to fulfill man machine interface. Besides the traditional functions of telemetry, tele indication, tele control and tele pulse, two level isolation technique and various software anti jamming techniques were introduced to improve the quality of digital and pulse signal sampling as well as tele control.