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我国电力系统的安全运行。以晋东南-南阳-荆门1000kV大跨越输电线路为工程背景,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,并采用六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。
That ice deposits on transmission lines is of great danger to the security of service of an electrical power system.Based on the example of Jindongnan-Nanyang-Jingmen 1000kV transmission lines system,jumping responses induced by ice-shedding in four cases are investigated,and the vibration controls in six installing cases of lead viscoelastic dampers using the nonlinear time history analysis method are studied.The results indicate that taking jumping of transmission lines induced by ice-shedding into account is very important and lead viscoelastic dampers possess better ability to suppress vibration.
出处
《振动与冲击》
EI
CSCD
北大核心
2008年第10期61-64,80,共5页
Journal of Vibration and Shock
基金
国家电网公司科技项目([2007]413)
关键词
输电线路
粘弹铅芯阻尼器
振动控制
覆冰
脱冰
transmission lines
lead viscoelastic damper
vibration control
icing
ice-shedding
