分裂导线短路时动态张力计算的对比研究  

A comparative study on dynamic tension calculation of bundle conductor in short circuit

作　　者：程壮 陈功 CHENG Zhuang;CHEN Gong(Changjiang Survey,Planning,Design and Research Co.Ltd.,Wuhan 430010,China)

机构地区：[1]长江勘测规划设计研究有限责任公司,湖北武汉430010

出　　处：《水利水电快报》2021年第6期59-62,共4页Express Water Resources & Hydropower Information

摘　　要：为研究国内外对于分裂导线短路时动态张力计算的差异,分别基于《电气一次手册》和IEC 60865标准,计算了分裂导线短路时的动态张力。对比了这两种方法之间输入条件和计算结果的差异,最终提出了关于影响分裂导线短路时动态张力计算的若干结论:IEC算法考虑了短路动态效应和导体受力的运动过程,引入了结构挂点常数,更接近实际情况,一次手册算法计算出的结果偏保守;两种算法的计算结果差异较大,但所得出动态张力与次档距关系的变化趋势是一致的。论文研究结果可供工程设计人员参考。In order to study the differences in dynamic tension calculation for bundle conductors in short circuit at home and abroad,based on the"Electrical Primary Manual"and IEC 60865 standard respectively,dynamic tension of the bundle conductor in short circuit under the different sub spans has been calculated for a case.From compar⁃ing the difference of considerations and results between the two methods,some conclusions were finally put forward.Due to the consideration of dynamic effect of short,introduction of elastic constant of structural hanging point in IEC calculation,its results are more conformation with practical condition,while the results calculated by Electrical Primary Manual is conservative in some degree.The calculated results by the two methods are larger in difference,but the variation trend of the dynamic tension and subspan is consistent.The research results can be used as a refer⁃ence for engineering designers.

关 键 词：分裂导线 短路 次档距 动态张力 临界接触 

分 类 号：TM75[电气工程—电力系统及自动化]