Multi-field Coupling Calculation of Room Temperature and Humidity of Switchgear Cables with Multiple Boundary Conditions

It is easy to produce condensation when switchgear is operated in humid environment for a long time, which will reduce the insulation performance of the equipment, seriously may cause discharge accidents, shorten the life of the equipment and even endanger the safety of personnel. Therefore, it is very important to study the distribution law of temperature and humidity of switchgear to prevent condensation. In this paper, the finite element software is used to simulate the temperature-fluid multi-field coupling in the switchgear cable room, and the distribution of air temperature, humidity and flow velocity in the cable room is obtained, and the time period and location of condensation are judged.