Icing prediction accuracy evaluation method and system

The invention belongs to the technical field of power transmission line icing prediction, and discloses an icing prediction accuracy evaluation method, which comprises the steps of determining an equivalent icing thickness and a tension value floating interval based on a power transmission line icing ratio; determining a theoretical tension value of the line based on the equivalent icing thickness; the predicted tension value is judged based on the theoretical tension value, the prediction result is evaluated, and the accuracy of the prediction result of the power transmission line icing prediction model can be visually judged. 本发明属于输电线路覆冰预测的技术领域，公开了一种覆冰预测准确性评价方法，包括基于输电线路覆冰比值，确定等值覆冰厚度及拉力值浮动区间；基于等值覆冰厚度，确定线路理论拉力值；基于理论拉力值判断预测拉力值，评价预测结果，有助于直观的判断输电线路覆冰预测模型预测结果的准确性。