摘要
通过有限元法计算了不同分裂导线、截面积、对地高度时分裂导线表面场强。计算结果表明采用分裂导线可以有效降低表面场强,从而达到抑制电晕放电的作用。借助皮克的导线电晕起始场强经验公式,得出750 kV输电线路采用6分裂导线比较合理。同理,适当改变导线截面和对地高度也可以降低导线表面场强。
In this paper,the electric field intensity on the surface of bundle conductors is calculated respectively by use of FEM method,considering the difference in the type of bundle conductors,sectional area and terrain clearance.The calculation results show that the bundle conductors can effectively reduce the surface electric field intensity,thus suppressing corona discharge.Through Peek′s experience formula on conductor corona onset electric field intensity,it is concluded that six-bundle conductor is more applicable to 750kV transmission line.Meanwhile,the appropriate adjustment of conductor sectional area and terrain clearance can also reduce the surface electric field intensity.
出处
《华东电力》
北大核心
2012年第12期2168-2172,共5页
East China Electric Power
关键词
750kV
电晕放电
分裂导线
表面场强
有限元法
750 kV
corona discharge
bundle conductor
surface electric field intensity
FEM
