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| 摘要: |
| 不平衡张力是危害输电线路安全稳定运行的重要因素之一。不平衡张力主要由不均匀覆冰造成。随着输电线路设计水平要求的不断提高,对杆塔所承受不平衡张力的计算分析成为线路设计中的重要环节。建立了不平衡张力的力学模型,分析了档距变化与电线应力间的数学关系,以及悬垂绝缘子串偏移和两侧导线应力间的数学关系。采用VB面向对象语言编程实现不平衡张力的求解。通过对具体实例的分析和计算,模拟计算出的结果和实际情况相符。 |
| 关键词: 不平衡张力,输电线路,杆塔 |
| DOI： |
| 分类号:TM744 TM752 |
| 基金项目: |
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| Analysis and calculation of transmission line unbalanced tensile force |
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LIU Qing-feng
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| Abstract: |
| Unbalanced tensile force,mainly caused by asymmetric icing,is one of the important factors impacting the safe running of transmission line.Along with the raise of transmission line design level,the analysis and calculation of unbalanced tensile force effecting on the tower becomes a necessary work.A mathematical model is built up.The mathematical relationships between span variation and line stress and between the offset of pendant insulator strained and line stresses of both sides are analyzed.The object-oriented development tool VB is adopted to calculate unbalanced tensile force.An instance is analyzed and calculated,and the simulated result accords with the fact. |
| Key words: unbalanced tensile force,transmission line,tower |
