输电线路脱冰跳跃反应控制研究  

Investigation on Control of Jumping Induced by Transmission Line Ice-Shedding

作　　者：尹鹏[1] 李黎[1] 张行[1] 

机构地区：[1]华中科技大学土木工程与力学学院,武汉430074

出　　处：《电网与水力发电进展》2008年第3期3-7,共5页

基　　金：国家电网公司科技项目([2007]413)

摘　　要：输电线路的覆冰及其引起的各类冰害事故严重危害了电力系统的安全运行。以云南楚雄至广东穗东±800kV特高压直流输电工程背景,采用非线性时程分析法,计算分析了四种工况下的输电线路的脱冰跳跃问题,并采用四种双层粘弹铅芯阻尼器布置方案对其进行了控制研究。分析结果表明,输电线路的脱冰跳跃问题不容忽视,粘弹铅芯阻尼器对其具有较好的减震效果。Ice deposits on transmission lines are of great danger to the security of service of electrical power system. Based on the example of the Chuxiong Yunnan-Huidong Guangdong ±800 kV transmission line system, this paper investigates the effect of the jumping induced by the ice-shedding with four cases, and analyses the vibration controls under six installing eases of the lead viscoelastic dampers by using the nonlinear time history analysis method. The results indicates that the importance of taking into account the jumping of the transmission lines induced by the ice-shedding and the efficiency of the lead viscoelastic dampers on the control of virations.

关 键 词：输电线路 粘弹铅芯阻尼器 振动控制 覆冰 脱冰 

分 类 号：TU311.3[建筑科学—结构工程] TM753[电气工程—电力系统及自动化]