数字式测量仪表的干扰及防护  

The Disturbance and Protection for Digital Measurement

作　　者：曹颉[1] 卢欣[1] 孔昭兴[2] 杨光[1] 

机构地区：[1]天津市电力科学研究院,天津300040 [2]天津宝坻供电有限公司,天津301800

出　　处：《电测与仪表》2010年第A07期5-8,60,共5页Electrical Measurement & Instrumentation

摘　　要：数字式测量仪表广泛应用于工程测量、科学实验、电能电力、国防军工、计量检定等领域,在测量技术中发挥着重要的作用。本文针对数字式测量仪表的应用,分析了影响数字式测量仪表准确性的主要干扰源——串模干扰、共模干扰及其特性,以及抑制串模干扰、共模干扰的主要方法。同时根据数字仪表的实际应用情况提出了有效的防护手段。Digital measurements are widely used in engineering measurement, scientific experiment, electric power, national defense and measurement test, and play an important role in measure technology. According to the practical application, this paper analyzes the main factors producing disturbances to the digital measurements. Following that, both series and common mode disturbances and their characteristics are presented, also with the primary methods to restrain those disturbances. Finally, based upon the practical application of digital measurements, effective protecting measures are provided.

关 键 词：数字仪表 串模干扰 共模干扰 积分技术 滤波技术 浮地技术 

分 类 号：TM933[电气工程—电力电子与电力传动]