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

作　　者：洪建平[1] 曹雷[1] 邓长征[2] 王鸿[2] 

机构地区：[1]湖南省电力公司常德检修公司,湖南常德415000 [2]三峡大学,湖北宜昌443000

出　　处：《电气开关》2013年第6期71-73,共3页Electric Switchgear

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。基于有限元分析软件ANSYS,以某条500kV输电线路JZ2型直线塔地线支架为研究对象,建立地线支架、中横担、边横担及上曲臂模型,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—地线支架承受的压应力远远超过了其欧拉应力。The ground wires from icing causes damage to the ground bracket yield, or even collapse, which is a serious threat to the safety and stability operation of China＇s power system. Taking the ground bracket of JZ2 straight line tower of a certain 500kV transmission line for research object, the paper establish ground support, cross arm, side arm and upper arm model, in the micro meteorological region and super covered ice situation, and analysis the impaired ground bracket structure＇s inner force by the ANSYS software. Compared with the field survey, the paper discovers instability reasons - -the ground bracket withstand compressive stress is far more than its Euler stress.

关 键 词：地线支架 覆冰 失稳 欧拉应力 ANSYS 

分 类 号：TM71[电气工程—电力系统及自动化]