Application Case Analysis of Online Monitoring System for Ring Main Unit Insulation Failure

This paper introduces the online monitoring system of ring main unit insulation failure, then explains the installation and practical application methods of the system, and analyzes the insulation failure detected by the online monitoring system. Finally, it is concluded that the insulation failure online monitoring system of ring main unit can monitor the internal insulation state of ring main unit timely through the analysis of the monitoring data. The online monitoring date conclud the characteristic gas concentration, temperature and humidity in the ring main unit. Once insulation failure occurs, the system could timely alarm and eliminate the major insulation accident in the early.