输电线路档距组合对覆冰导线脱冰跳跃的影响  

Impact of Transmission Line Span Combination on Ice-shedding of Iced Conductor

作　　者：黄新波[1] 徐冠华[2] 肖渊[2] 朱永灿[3] 马龙涛 郑雁翎[4] 

机构地区：[1]西安工程大学电子信息学院,西安710048 [2]西安工程大学机电工程学院,西安710048 [3]西安电子科技大学机电工程学院,西安710071 [4]宝鸡文理学院,宝鸡721016

出　　处：《高电压技术》2015年第7期2356-2361,共6页High Voltage Engineering

基　　金：国家自然科学基金(51177115);教育部"新世纪优秀人才支持计划"(NCET-11-1043);陕西省重点科技创新团队计划(2014KCT-16);陕西省协同创新计划(2014XT-07);陕西省自然科学基础研究计划资助项目(2013JQ7034)~~

摘　　要：为明确输电线路塔线体系脱冰跳跃张力和幅值特性,揭示各项参数对脱冰不平衡张力和冰跳幅值的影响规律,利用ANSYS建立导线–绝缘子耦合有限元模型,针对档距组合下脱冰档位置和档距的变化,通过控制变量法,得到了档距组合对于塔线体系动态位移和不平衡张力的变化规律。结果表明:随着脱冰档档距的不断增加,其导线悬挂点处的纵向不平衡张力近似呈线性增加;随着非脱冰档档距的增加,中间档脱冰时,其导线悬挂点处的最大不平衡张力增幅不大;不论脱冰档还是非脱冰档变化,当档距较小时,其导线脱冰跳跃高度随档距的增加而增加,当档距增加到一定程度,其导线脱冰跳跃高度的变化趋于饱和。因此,线路档距组合对覆冰导线脱冰跳跃的影响显著。In order to further study tension and amplitude characteristics of ice-shedding tower-line system, and to reveal the influences of various parameters on unbalance tension and amplitude of ice-shedding, we established a conduc- tor-insulator coupled finite element model in ANSYS. In accordance with variations of the shedding span location and the span, we obtained the span combination law for the dynamic displacement and the unbalance tension of the tower-line system through the variables controlling method. Several conclusions can be drawn according to the simulation results as follows. The longitudinal unbalance tension conductor suspension point approximately increases with the shedding span linearly, while the maximum unbalance tension of the conductor suspension point rarely increases with the un-shedding span at ice-shedding of the middle span. Regardless of variations of the shedding span or un-shedding span, when the span is small, the ice-shedding height of the conductor increases with the span, moreover, when the span increases to a certain extent, the height variation of ice-shedding of the conductor tends to saturation. Therefore, the line span combination has a significant effect on the ice-shedding of iced conductor.

关 键 词：覆冰 脱冰 有限元 档距组合 不平衡张力 冰跳幅值 

分 类 号：TM752[电气工程—电力系统及自动化]