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《Electric Power Automation Equipment》 2006-01
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Analysis and calculation of transmission line unbalanced tensile force

LIU Qing-feng(Hunan Electrical Power Design Institute,Changsha 410007,China)  
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.
【CateGory Index】: TM75
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