Analysis of Temperature Distribution Characteristics of Fuses under Different Arrangement of Ring Network Cabinet Based on Multi-Physical Field Coupling

The high voltage fuse in the ring cabinet works in a high current environment, and its heat dissipation performance is very important for maintaining its normal working performance. For this purpose, the heat dissipation process and differences in different arrangement of fuses under the natural convection condition are studied. First, based on the multi-physical field coupling software COMSOL, we established a three-dimensional simulation model, which is the direct coupling of the flow and temperature field of the fuse in a ring network cabinet under the condition of natural convection, and analyzed the flow and temperature field of the fuse under different layout. The results show that in the same working environment, with the increase of the angle between the fuse and the gravity direction from 0o to 90o, the overall temperature of the fuse will gradually decrease, and the temperature distribution inside the fuse also varies with the change of the angle. The research results are of great significance for analyzing the thermal faults of fuses and optimizing the heat dissipation arrangement of fuses.