Abstract: Wildfires near transmission lines seriously threat the power grid security. When the wildfire near transmission lines occures, it should be put out immediately. In order to promote the disposal efficiency of wildfires, a stereoscopic control system was proposed, which can predict wildfire to deployment fire-fighting equipment in advance, detect the wildfire in time by the airborne monitoring device and fight the wildfire combining air and ground. The integrated device with wildfire monitoring, communication and fire extinguishing was designed, which can realize the rapid linkage of helicopter monitoring, emergency consultation and fire-fighting. Fire-fighting equipment was carried to inspect wildfires and extinguish the wildfires quickly. The system had extinguished more than 80 wildfires that endanger the safe operation of the power grid. The application shows that the helicopter fire extinguishing equipment can put out 100 km wildfire within 40 minutes.

Key words: fire fighting, transmission line, wildfire, coordinated helicopter, satellite and ground equipment prevention and control system