基于耐张串等效悬链线形状下的特高压孤立档计算方法研究

Research of UHV Transmission Line Isolated Span Calculation Based on Tension String Being Equivalent to Catenary

随着电压等级的提高,耐张绝缘子串长度和重量显著增加,特别是特高压输电线路,耐张绝缘子串会对孤立档导线的应力、弧垂计算产生严重影响。基于电线力学的基本理论和计算公式,提出一种将耐张绝缘子串等效为悬链线的孤立档计算方法,对特高压输电线路孤立档导线的应力、弧垂设计给出建议。

With the increase of voltage level, the length and weight of tension insulator string increase significantly, especially UHV transmission line, tension insulator string may have a serious effect on conductor stress and sag calculation of isolated span. A new method based on basic theory and calculation formula of wire mechanics is proposed, which assumes that the tension insulator string is equivalent to catenary, and gives advice on the conductor stress and sag calculation of UHV transmission line isolated span.