摘要
针对钢芯铝绞线作为电力架空导线出现的断股、断线现象,采用对单钢线进行拉断力试验、对单铝线进行扭转卷绕试验的方法,对架空线路的钢芯铝绞线低温机械特性进行了研究。通过试验得出了低温下钢芯铝绞线拉断力和扭转特性等变化情况,并建议大跨越和山谷中的架空输电线路在低温气候条件下应加强运维措施。
Aiming at the broken strand and disconnection of ACSR as overhead power conductor which threatens safe operation of power transmission and transformation system, the author studies the cryogenic mechanical proper- ties of ACSR by testing the breaking force of single steel line and reverse winding of single aluminum conductor. Through the test, the author works out the change law of breaking force and reverse winding of cryogenic mechani- cal properties of ACSR, and advise to strengthen operation and maintenance measures for large-span overhead transmission line in valley under cryogenic conditions.
出处
《黑龙江电力》
CAS
2014年第6期518-520,共3页
Heilongjiang Electric Power
关键词
钢芯铝绞线
架空线路
低温特性
拉断力
ACSR
overhead transmission line
cryogenic properties
breaking force
