基于STM32的在线绝缘监测装置的设计

Research on the on-line insulation monitoring devices based on STM32

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。

Abstract:

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 much 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.