摘要
为了验证实际线路环境风速变化对架空线路的载流及温升的影响,模拟环境自然风力的影响,在实验室选择LGJ-240/40和LGJ-630/55两种典型规格的钢芯铝绞线进行了自然对流及垂直、平行风力下载流试验以及架空导线载流能力试验。试验结果表明:风速对架空导线温升及载流的影响呈现明显饱和效应;架空导线载流越大,风速对温升影响越明显。
In order to verify impact of ambient wind velocity change on Ampacity of overhead transmission lines and temperature rise and simulate the impact of natural wind force,two steel-core aluminum strand cables,LGJ-240/40 and LGJ-630/55 are chosen for ampacity experiment under circumstances of natural convection,vertical wind and horizontal wind,as well as experiment on overhead line ampacity.The experiment shows that there is evident saturation effect in impact of wind velocity on temperature rise and ampacity of overhead lines;the greater the ampacity of overhead lines is,the clearer the impact of wind velocity on temperature rise becomes.
出处
《广东电力》
2012年第3期20-25,共6页
Guangdong Electric Power
关键词
架空线路
载流
温升试验
风速
自然对流
热平衡
overhead line
ampacity
temperature rise experiment
wind velocity
natural convection
thermal stability
