“…Foreign research focuses on the analysis of the influence of wind speed and sunshine intensity on the traction network load, and puts forward specific calculation formula for the influence of solar radiation heat absorption coefficient on the load, but the analysis of wind direction Angle and environmental temperature is not clear enough. [2] On the premise of geographical location and meteorological environment, the thermal load capacity determined under the maximum allowable temperature of the transmission wire of traction network can be used as the evaluation basis of the allowable current load of traction network, and it can be used as an important condition to ensure the stable operation of electric locomotive. Since the influence of geographical location and meteorological environment on the load capacity of traction network cannot be ignored, the control variable method can be used to simulate and compare the load capacity of transmission wire, which can verify the transmission capacity of the whole transmission network effectively, so that the dispatching of traffic and the design of traction network are more reasonable.…”