Design of optical system for laser removal of foreign bodies in high voltage transmission line

doi:10.1117/12.2565342

CORC > 西安光学精密机械研究所 > 中国科学院西安光学精密机械研究所 > 光学定向与测量技术研究室

	Design of optical system for laser removal of foreign bodies in high voltage transmission line
	Cai, Yong 2; Xiao, Maosen 2; Liu, Yang 1; Liu, Aimin 2; Gao, Peng 2
	2020
会议日期	2019-12-03
会议地点	Beijing, China
关键词	Laser High Voltage Transmission Line Optical System
卷号	11455
DOI	10.1117/12.2565342
英文摘要	High-voltage and ultra-high-voltage transmission cables are exposed to natural environment all the year round. Plastic and other non-metallic foreign bodies are often overlapped on cables, towers, insulators and other power grid facility, which leads to poor insulation among high-voltage power cables, and becomes one of the major threats to the normal operation of power systems. As a new light source, laser has a good application prospect in the removal of non-metallic foreign bodies such as polymers because of its high energy, strong monochromatic and good coherence. The use of laser to remove non-metallic foreign bodies such as plastics winding on transmission lines has the advantages of fastness, high efficiency, safety, so it has been widely used in the removal of foreign bodies in high-voltage and ultra-high voltage power lines. In this paper, the mechanism of laser ablation is analyzed and the optical system of laser ablation unit is designed. According to the actual situation of laser ablation of polymer for transmission line, the diameter of laser spot at 10-180m is determined to be 32mm. In the consideration of the error factors, the imaging quality of the optical focusing unit for the designed optical system is simulated. At the same time, the far-field characteristics of the laser are simulated and studied. The results show that the range of RMS SPOT radius change is less than the diffraction limit radius by sensitivity analysis of laser ablation unit considering errors. The designed optical focusing unit has good imaging quality and meets the requirements. With the increase of laser transmission distance, the diameter of laser spot increases slightly. The maximum spot diameter at 180m is 29mm, which is less than the design value. The designed optical system can meet the needs for laser ablation of polymer and has good effect. © 2020 SPIE.
产权排序	1
会议录	Sixth Symposium on Novel Optoelectronic Detection Technology and Applications
会议录出版者	SPIE
语种	英语
ISSN号	0277786X;1996756X
ISBN号	9781510637047
内容类型	会议论文
源URL	[http://ir.opt.ac.cn/handle/181661/93703]
专题	西安光学精密机械研究所_光学定向与测量技术研究室
作者单位	1.State Grid Xi'an Electric Power Supply Company, Xi'an; 710054, China 2.Chinese Academy of Sciences, Xi'an Institute of Optics and Precision Mechanics, Xi'an; 710119, China;
推荐引用方式 GB/T 7714	Cai, Yong,Xiao, Maosen,Liu, Yang,et al. Design of optical system for laser removal of foreign bodies in high voltage transmission line[C]. 见:. Beijing, China. 2019-12-03.