Live simulation model and its modification for dynamic thermal line rating calculation

In view of the shortcomings of the existing calculation models for dynamic thermal line rating, Live Simulation Model (LSM) based on the conductor temperature model is proposed in this paper. Because there are many unknown parameters in engineering practice, the dynamic thermal line rating calculated by LSM has a large error. In this paper, the unknown parameters are added to LSM, and the unknown parameters are obtained by using intelligent optimization algorithm, so as to modify the physical parameters in the calculation model and ensure the accuracy of the dynamic thermal line rating. And the calculated results are 35.5% higher than the standard line rating, which means the improvements are obvious.