全球能源互联网, 2023 针对使用广泛的500 kV架空输电线路，分别研究了在轻、中、重冰区，由断线及不均匀覆冰引起的导线张力对输电杆塔安全性和经济性的影响。研究表明：导线张力增加0～20%，若保持杆塔杆件规格不变，悬垂塔的超限杆件比例为0～51%，耐张塔的超限杆件比例为0～4%；若增大杆塔杆件规格以保证安全，悬垂塔的塔重增加0～28%，耐张塔的塔重增加0～5%；覆冰越厚，由断线引起的导线张力对杆塔影响越小，由不均匀覆冰引起的导线张力对杆塔影响越大；导线张力主要影响悬垂塔横担上、下平面交叉材、塔身主斜材等杆塔杆件。因此 ...
种芝艺 +6 more
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Guangtongxin yanjiu, 2017 为了实现每基杆塔的光纤定位,从而更精准地实时监测光纤架空地线复合缆的运行状态,提出了一种基于分布式光纤传感技术的杆塔光纤定位方法。通过对实时监测频移数据进行分析,并结合光纤架空地线复合缆自身结构和架设特点发现,在杆塔连接位置由于金具等的连接原因,使得光纤频移变化量较档距中间更小,因而可以从差异化出发识别杆塔的位置,实现输电线路杆塔精确定位。最后通过与线路资料进行对比,验证了定位方式的可行性。
黄良 +6 more
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Research on Lightning Performance and Protective Measures of ±800 kV UHVDC Power Transmission Line [PDF]
, 2023 [Introduction] Lightning strike is the primary cause of failures of ±800 kV UHVDC power transmission lines, and the lightning protection assessment of power transmission lines is critical to the safe and stable operation of the system.
Youjun GONG, Zhiwen HE, Ziwei YAN
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Power-Line Extraction Method for UAV Point Cloud Based on Region Growing Algorithm [PDF]
, 2023 [Introduction] Since the power line has the characteristics of long transmission distance and a complex spatial environment, the UAV LiDAR point cloud technology can completely and efficiently obtain the geometric information of the power line and its ...
Wei WU, Xingyi LI, Zhiyao ZHAO
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Application of Magnetic Coupling Resonance Wireless Power Transfer in Power System [PDF]
, 2022 Wireless power transfer (WPT) can transmit electric wirelessly. It performs better under some paticular circumstances compared with the traditonal transmission mode.
HE Hao +4 more
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Discharge characteristics and discharge simulation model of long air gaps containing a floating conductor [PDF]
, 2022 Long air gaps containing a floating conductor are common insulation types in power grids. During the transmission line live-line work, the process of lineman entering the transmission line air gap constitutes a live-line work combined air gap, which is a
Gao, Jiachen <1995>
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Comparative Analysis of Slenderness Ratio Calculation Methods of Cross Bracings for Towers Between China and EU Overhead Transmission Line Standards [PDF]
, 2023 [Introduction] This paper aims to effectively avoid the design quality problems caused by the difference between domestic and foreign engineering design specifications. The study makes comparative analysis of slenderness ratio of cross bracings for angle
Hongliang GUO +3 more
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Fast Analysis Method of Overhead Line Tree Barrier Based on Vectorized Power Line [PDF]
, 2023 [Introduction] With the continuous and rapid growth of the number of tree barrier inspections, visible light aerial photogrammetry has become the most important inspection method for hidden dangers of tree barriers in transmission lines of power supply ...
Junda HUANG, Rouna XU, Siyao TANG
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Research on lightning transient distribution characteristics of cable-stayed bridges [PDF]
, 2023 Bridges are usually located at the junction of land and water, where the surrounding area is open terrain, making them to be easily damaged by lightning strikes.
Dajun XU +4 more
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Translator-Author Cooperative Translation Mode Based on Information Theory [PDF]
, 2020 Cooperative translation has a long history, and many scholars have also made research on it. Cooperative translation modes can be categorized into four types according to the division of labor and cooperation methods of co-translators.
YANG, Liuxian, ZHAO, Yushan
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