摘要
针对直流电源系统绝缘状况监测不全的问题,提出了基于组合桥的在线绝缘检测方法,以STM32微处理器为核心,设计了硬件构架和软件构架,研制了在线式绝缘监测装置,在满足系统接地和绝缘降低的绝缘状况监测的基础上,实现了交流窜入、直流互窜、电容测量、绝缘预警、母线对地电压补偿和装置自检等功能,现场运行表明了其可行性和有效性。
In accordance with the deficiency of insulation monitoring contents for DC power system, the method of the on-line insulation inspection is proposed based on combined bridge. With STM32 as the processing core, the hardware framework and the software framework are designed and the on-line insulation monitoring devices is developed. On the basis of satisfying the system grounding and the insulation dropping, the Multiple functions are realized, such as, AC injection, DC crosstalk, capacitance measurement, insulation early warning, DC bus to ground voltage compensation and devices self-checking. The practical application shows that this devices is accurate and reliable.
作者
尹强
王佰超
甘江华
刘建鹏
乔海强
Yin Qiang;Wang Baichao;Gan Jianghua;Liu Jianpeng;Qiao Haiqiang(XJ Power Co.,Ltd., State Grid Corporation of China, Xuchang 461000, China)
出处
《计算机测量与控制》
2019年第7期40-44,49,共6页
Computer Measurement &Control
基金
国家电网公司总部科技项目(5292C0170032)
关键词
直流系统
绝缘监测
STM32
组合桥
在线式
DC power system
insulation monitoring
STM32
combined bridge
on-line
