基于M/T法直流母线绝缘检测系统的研究  

Study on Online Insulation Detection for DC System Based on MT Technology

作　　者：张刚[1] 杜深慧[1] 王美华[2] 徐卫东 

机构地区：[1]河北科技大学电气信息学院,石家庄050054 [2]河北科技大学网络技术学院,石家庄050054 [3]石家庄通合电子有限公司,石家庄050016

出　　处：《电测与仪表》2006年第8期10-13,共4页Electrical Measurement & Instrumentation

摘　　要：对直流系统绝缘检测方法及其主要特点进行了综合分析,提出了基于压频变换技术和M/T算法的直流系统母线对地绝缘在线检测系统模型,并给出了软、硬件实现方案。该方法方便地实现了采样单元和处理单元的物理隔离,同时提高了系统的抗干扰能力和检测精度。实际运行表明基于该技术构建的直流母线绝缘检测系统运行稳定、可靠、精度较高。Detecting method and primary ground are analyzed. Online detection tween ground and DC system based on characteristics for DC system insulation to model for measuring insulating resistance beV/F technology and M/T arithmetic is presented and implemented. By transforming voltage signal to frequency, it implemented that sample signal and processing unit is insulated. The transforming enhanced system stability and anti-disturbing. Actual application shows that the system is steady, reliable and high accurate.

关 键 词：直流系统 绝缘检测 M/T算法 压频变换 

分 类 号：TM934.1[电气工程—电力电子与电力传动]