WIND NOISE EVALUATION METHOD OF OVERHEAD TRANSMISSION LINE

PROBLEM TO BE SOLVED: To provide a wind noise evaluation method capable of accurately grasping increase/decrease of wire wind noises when an existing overhead transmission line is updated to a rebuilt overhead transmission line.SOLUTION: The wind noise evaluation method of an overhead transmission line includes steps of: preparing a prediction value of wire wind noises caused by an existing overhead transmission line at a site for evaluating the wire wind noises; calculating a prediction value of a wire wind noises caused by a rebuilt overhead transmission line at the site for evaluating the wire wind noises; calculating a finite difference between the prediction value of wire wind noises caused by the rebuilt overhead transmission line and the prediction value of wire wind noises caused by the existing overhead transmission line; and comparing the finite difference with a threshold value.SELECTED DRAWING: Figure 1 【課題】既設の架空送電線から建替の架空送電線に更新された場合の電線風音の増減を、正確に把握することができる風音評価方法を提供する。【解決手段】架空送電線の風音評価方法は、風音評価地点における既設の架空送電線による電線風音の予測値を準備する工程と、風音評価地点における建替の架空送電線による電線風音の予測値を算出する工程と、建替の架空送電線による電線風音の予測値の、既設の架空送電線による電線風音の予測値に対する差分を算出する工程と、差分を閾値と比較する工程と、を有する。【選択図】図１