摘要
在实验室模拟孤立档单导线的脱冰振动现象,针对导线的整档脱冰和部分脱冰情形,通过改变导线的覆冰厚度、悬跨比、脱冰量和脱冰位置等,研究不同工况下脱冰导线内张力的变化规律。研究表明:随着覆冰厚度的增加、悬跨比的减小和脱冰量的增加都会增大导线的脱冰响应;与脱冰前导线静态张力相比,部分脱冰产生的动态张力可能超过此静态张力,而且脱冰位置越靠近导线端部,这种现象表现的越为明显。
The phenomenon of ice shedding from a single conductor between isolated span in laboratory is simulated,and the characters of tensile force in ice shedding conductor under several working conditions are researched by changing the thickness of iced conductor,the ratio of conductor sag and span,the quan-tity and location of shedding ice.The research shows that,with the increase of ice thickness,the decrease of the ratio of sag and span,or the increase of the shedding ice quantity,the amplitude of the response would increases;comparing with the conductor static tension when no ice is shedding,the dynamic tension is bigger when part of ice is shedding from conductor,and this phenomenon would become obviously when the location of shedding ice near the end of conductor.
出处
《振动．测试与诊断》
EI
CSCD
北大核心
2013年第5期892-896,917-918,共5页
Journal of Vibration,Measurement & Diagnosis
基金
中央高校基本科研业务费专项资助项目
关键词
输电线路
导线脱冰
脱冰振动
模拟实验
transmission lines
ice shedding from cable
vibration of ice shedding
simulated experi-ment
