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.
出处
《电测与仪表》
北大核心
2006年第8期10-13,共4页
Electrical Measurement & Instrumentation
关键词
直流系统
绝缘检测
M/T算法
压频变换
DC system
insulation detection
M/T arithmetic
voltage to frequency con-version
