自然風中において配電線機材に生じる不平衡張力のレインフロー法による評価

抄録

 This paper describes estimation of the unbalanced wire tension acting on the electric distribution apparatuses in natural wind by means of the rainflow method in order to conduct the fatigue damage design.
 The unbalanced wire tension was measured by field test at several sites. From statistical analysis results of the unbalanced wire tension calculated by means of the rainflow method, it is clarified that the amplitude and the frequency have a strong correlation with the wind speed. Furthermore, we specify a distribution model of the amplitude of the unbalanced wire tension.