基于ansys的地线支架覆冰失稳原因分析 analysis of causes for icing unstability of earth support based on ansys.pdfVIP

电气开关(2013．No．6) 71 文章编号：1004—289X(2013)06—0071—03 基于ANSYS的地线支架覆冰失稳原因分析 洪建平1，曹雷1，邓长征，王鸿2 宜昌443000) (1．湖南省电力公司常德检修公司，湖南常德415000；2．三峡大学，湖北 摘要：输电线路地线覆冰导致地线支架失稳垮塌，严重影响了我国电力系统安全稳定运行。基于有限元分析软 模型，对其在微气象区、最大覆冰工况下所发生的失稳情况进行了受力分析，并与现场调研情况对比，找出其失稳 垮塌原因一地线支架承受的压应力远远超过了其欧拉应力。 关键词：地线支架；覆冰；失稳；欧拉应力；ANSYS 中图分类号：TM71 文献标识码：B for Earth BasedonANSYS ofCauses of Analysis IcingUnstabifitySupport HONG Leil，DENG Jian-pin91，CAOChang-zhen92，WANGHon92 Service ofPower (1．ChangdeCompany Company，Changde415000，China；2．Sanxia 443000，China) wiresfrom causes tothe bracket even isaserious Abstract：The ground icing damageground yield，orcollapse，which the of linetowerof threattothe and ofChinag bracketJZ2 safetystabilityoperation powersystem．Takingground straight acertain500kVtransmissionlineforresearch establish armand ground alm，side upper object，thepaper support，cross arm themicro and coveredice the bracket model，in situation，and ground meteorologicalregionsuper analysisimpaired structure’SinnerforcetheANSYS withthefield discovers reasons一 paper instability by software．Comparedsurvey，the bracketwithstand stressisfarmorethanitsEulerstress． 一theground compressive Keywords：groundbracket；ice；instability；Eulerstress；ANSYS