Abstract:According to the different types of power tower, this paper presents a new equivalent model of computing icing thickness, designs a conduct-icing monitor device, which based on transmission lines motion state recognition and angle sensors. The proposed method regards it as harmonic motion of simple pendulum, the angle sensors are able to measure accurate angles in a range of 15 degrees. The device adopts the solar cells and super-capacitors to provide energy sources, improving the utilization rate of solar energy with the Maximum Power Point Tracking (MPPT) technique, installed on the Guizhou power grid co-operation deicing base, 220kV, 500kV No.2 and No.3 tower during November 7th-12th 2018. The results show that the device can available and feasible for monitoring icing transmission line.