Magnetic Field Safety Analysis of UAV Inspection in 220 kV Substation

Unmanned aerial vehicles (UAVs) demonstrate high practical value in substation inspections, addressing the limitations in vision and path restrictions encountered by robotic inspections. However, the UAV systems’ internal modules that are sensitive to electromagnetic fields and their related wireless signal links are susceptible to strong electromagnetic interference. This study employs Genie 4 UAV and Mavic 2 UAV to perform magnetic field simulation calculations and investigate the safety distance issue during close inspection and crossing inspection in 220 kV substation. The safety distance of UAVs is dependent on the load current. When the load current is 300 A, the safety distance for close inspection of Genie 4 UAV is 40 cm, and the safety distance for crossing inspection is 50 cm. For Mavic 2 UAV, the safety distance for close inspection is 40cm, and the safety distance for crossing inspection is 60 cm.