交流采样的微机电量变送器及其自检技术  

AC Sample-Based Microcomputer Transducer of Electric Variables and Its Self-Test Technique

作　　者：曹孝宁[1] 龙可微[1] 陈小虎[1] 

机构地区：[1]南京师范大学电气与电子工程学院,江苏 南京 210042

出　　处：《电力自动化设备》2000年第6期23-26,共4页Electric Power Automation Equipment

摘　　要：介绍一种基于交流采样技术的新型微机电量变送器 ,并且针对其特点提出了对其自检的方法。该变送器采用了同步采样、高精度高速A/D等先进技术 ,可以测量 8条三相三线制或三相四线制电力线路 ,具有较高的测量精度和理想的性能。主要分析了该变送器的工作原理、硬件电路、软件设计、自检方法以及抗干扰措施等关键技术。A new type of microcomputer transducer of electric variables is introduced,which is based on AC samples.The self testing method of the transducer is presented according to its features.The advanced techniques are applied in it,such as synchronous sampling,high speed and high precision A/D converter.It can measure eight power lines in 3 phase 3 wire or 3 phase 4 wire mode,and it has higher measuring precision and powerful function.Its operation principles and key techniques in software and hardware design,self testing method and anti interference measures are described.

关 键 词：微机电量变送器 硬件 软件 自检 交流采样 

分 类 号：TM933[电气工程—电力电子与电力传动]