Using Memory Alloy Material to Solve the Problem of Ice-covered Sag of Overhead Ground Wire of Transmission Line

This paper analyzes the hazards of the ice-covered sag of the overhead ground wire of the transmission line, understands and grasps the causes of the excessive grounding sag of the high-voltage power line. To reduce the overhead ground wire ice sag, based on the conductor LGJ- 240/30 type, ground of GJ- 50 type ground of high voltage transmission lines ice sag problem as the research object, using shape memory alloy material temperature deformation characteristics has designed two kinds of overhead ground wire ice sag, using memory alloy temperature of phase transformation point of turning force on ground wire, make it keep safe distance between wires, and auxiliary deicing, automatically. The stress, sag, tension and gravity of the ground wire are calculated with the typical overhead ground wire design, and the memory alloy spring is selected. According to the design scheme, the simulation test is carried out and the feasibility of the design scheme is proved.