跳线风偏闪络原因分析及预防措施研究  

Research on Flashover Factors of Jumper Wires Caused by Windage Yaw and Its Preventive Measures

作　　者：朱映洁[1] 林方新[1] 

机构地区：[1]中国能源建设集团广东省电力设计研究院有限公司,广州510663

出　　处：《南方能源建设》2016年第2期77-81,87,共6页Southern Energy Construction

摘　　要：针对南方电网沿海强风区域易发生耐张塔跳线(串)风偏闪络的现象,从分析跳线(串)风偏跳闸的主要原因入手,参考数种国际主要输电线路设计标准有关突风率的取值规定,详解南方电网《输电线路防风设计技术规范》有关条文的规定由来,并剖析比较不同跳线方式对抑制跳线风偏闪络的作用。研究表明,适当提高跳线风压不均匀系数取值可改进跳线风偏计算模型对自然风的脉动特性考虑不足的问题,同时在沿海强风区域线路中推广采用刚性跳线可以显著抑制耐张塔风偏跳闸事故率。In consideration of tlie phenomenon that jumper flasliover is easy to occur in southern coastal aea of cle analyses the main reasons of flasliover , references the value of gust wind factor plains the origin of tlie relevant provisions of ＂Design specification for transmission line against tphoon＂ proclaimed by China Southern Power Grid,and it compaes different kinds of jumper string’s effects on inhibition of jumper flashover. The reseach shows that an appropriate increase in the span factor of jumper can improve the swing calculation model on insufficient wind turbulence chaacteristics,and to promote the use of rigid jumper can significantly inhibit the swing trip accident rate of tensiontower in the coastal aea of strong wind.

关 键 词：风偏闪络 突风率 风压不均匀系数 刚性跳线 

分 类 号：TM756.2[电气工程—电力系统及自动化]