通信电源系统绝缘监察装置的研制

Development of insulation monitoring device for communication power supply system

介绍了通信高压直流系统中安装绝缘监察装置的必要性,针对现有绝缘检测方法,分析了其存在的缺点,提出了一种性能更为完善的监测方法,并着重介绍了其原理及应用方式。该方法能检测出直流母线、支路对称和非对称接地时的母线电压、接地电阻值,提高了直流系统的绝缘检测装置的可靠性和准确性。通过Multisim仿真和现场实验结果表明,该装置可以准确检测绝缘电阻值,查找出故障支路,给故障分析人员提供了极大的方便。最后本文对该装置的使用提出了一些建议。

This paper introduces the necessity of installing insulation monitoring device in high voltage DC （HVDC） system ,analysis the shortcomings of the current insulation detection methods ,proposed a perfect monitoring method , and emphatically introduces the principle and application of the method .This method can detect the bus voltage and the grounding resistance when bus or branch in the symmetrical grounding or not ,so the reliability and the accuracy are improved .The results of multisim simulation and experiments show that the device can detect the insulation resistance accurately ,and then find out the fault branch ,it is very convenient for fault analysis staff .Finally ,some suggestions are put forward for the use of the device .