Lidar-based Safe Distance Analysis Method for Transmission Lines under Multiple Conditions

The current carrying capacity calibration of transmission lines plays an important role in guiding the rationalization of the capacity and safety of overhead transmission lines, and is extremely important for power dispatching and construction. This paper introduces a lidar-based safety distance analysis method for transmission lines under multiple conditions, taking the actual operating results of the ampacity check of the 220kV Yuntian line in the Yunfu area as an example. By comparing and analyzing the multi-case simulation data, artificial review data, and design data of the same transmission line under different meteorological and load conditions, the reasons for the error between the data are obtained. And the parameters of the module, the influence of load, meteorological value, and the error of the prediction result were studied. The problems in the actual ampacity check were pointed out. The reliability of the multi-case analysis based on the airborne lidar was verified.