Results 71 to 80 of about 4,968 (149)
Performance study on removal of NO in coal-fired flue gas via photothermal synergistic catalysis of H2O2 over copper-modified TiO2/carbon fiber film [PDF]
Flue gas emitted by coal-fired power plants contains a large amount of nitrogen oxides (NOx). Solar energy driven photocatalysis technology provides a novel approach of near-zero emission for flue gas denitrification, however the efficiency of single ...
Chongchong LENG +4 more
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Gaoya dianqi, 2019 通过观察辨识不同电压等级下输电线路中瓷质绝缘子的原始红外图像的特征,提出了一种基于决策树的劣化瓷质绝缘子的识别与判定的方法。在不同湿度温度下,传统的检测阈值变化较大,通过提取原始红外图像的数据,选取绝缘子串中单片绝缘子的钢帽温度、最大温度、钢帽瓷件温度差、绝缘子瓷件环境温度差、单片绝缘子的最大温升百分比及单片绝缘子温度方差这6个变量作为输入参数,以绝缘子绝缘程度的优劣作为输出,利用决策树,选择了最优检测阈值组合,建立了裂化绝缘子的智能检测模型。得出钢帽瓷件温度差及瓷件环境温度差为最优检测阈值组合这一结论,
付炜平 +5 more
doaj
No-Reference Low-Light Image Enhancement with Enhanced Feature Map [PDF]
Since low-light images are of poor quality and carry noise, resulting in insufficient contrast and brightness, unclear details in the image, and the problem of high cost of obtaining paired low-light image datasets, a no-reference low-light image ...
YUAN Heng, WANG Xiaoxue, ZHANG Shengchong
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, 2003 对卫星跟踪表层漂流浮标、卫星高度计和遥感SST图像资料的分析均发现,1996年3月前后在台湾岛东南、恒春半岛与兰屿之间有一个大型的气旋型黑潮锋面冷涡.该冷涡的水平尺度在纬向和经向分别可以达到70和100 km左右,并伴随有黑潮在兰屿附近相应的离岸蛇形.冷涡与常见的黑潮锋面涡不同,在兰屿一带呈准稳态滞留,时间达两个月以上.有证据表明,冷涡滞留期间,黑潮可能呈套状侵入南海,而且类似的涡旋在同一位置不时发生.对比此前墨西哥湾的相关研究,兰屿锋面涡应是美国佛罗里达半岛南端Tortugas涡的南海版本 ...
李立, 靖春生
core
Mining coal-rock interface nodal GPR rapid dynamic detection system and experimental research [PDF]
Coal-rock interface recognition technology is one of the key technologies for intelligent mining in coal mines. Based on high-frequency radar wave detection technology, high-precision detection of coal-rock interfaces can be achieved with mining, but ...
Lingzhou CHEN +4 more
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Research on Fault Diagnosis Method of Photovoltaic Arrays Based on Improved Grey Wolf Algorithm Optimized Extreme Learning Machine [PDF]
ObjectivesPhotovoltaic arrays operating under complex outdoor conditions encounter various fault types with varying degrees of severity. To accurately assess the working status of photovoltaic arrays, a fault diagnosis method based on an improved grey ...
HAN Maolin +4 more
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基于轻量级密集残差网络的输电线路绝缘子红外图像的超分辨率重建
Gaoya dianqi红外成像是检测输电线路绝缘子发热缺陷的一种有效方法，受采集设备和拍摄距离的影响，其分辨率较低，图像中绝缘子目标小，大量数据难以处理。针对红外图像分辨率低的问题，文章提出了一种基于轻量级密集残差网络（lightweight residual in residual dense block，LRRDB）的图像超分辨率重建算法（I-SRGAN），设计一种轻量级的密集残差网络，加深网络的深度以提取到更深层次的特征信息，通过深度可分离卷积减少网络参数量；为了克服网络深度过深存在的过拟合和“梯度爆炸”等问题 ...
吴田 +6 more
doaj
Gaoya dianqi, 2015 随着GIS设备应用日益广泛,其缺陷种类和数量随之增加,很多缺陷均能通过热分布状态反映出来。基于红外测温及热图像分析技术,文中介绍了GIS设备的两种热缺陷机理及表现形式,提出了相应的诊断依据,并通过实例分析了GIS设备内部和外部热缺陷的图像特征,总结出缺陷原因,对现场检测工作中如何区分缺陷类型及查找故障原因提供有效参考,从而为进一步提高设备状态检测水平,深化状态检修工作提供有力的技术支持。
陈仁刚, 冯新岩, 辜超, 林峰
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Dianci bileiqi, 2015 在机电负荷、污秽及环境温湿度等共存的长期环境影响下,盘形悬式瓷绝缘子瓷件内微孔将逐渐扩展,直至开裂受潮,机械强度和绝缘性能丧失,对电网安全稳定运行构成极大隐患。笔者对某电厂带电检测过程中发现的低（零）值瓷绝缘子在实验室中进行了验证实验研究,进一步分析了低（零）值绝缘子的热像特征及电晕特点,验证了红外热像检测低（零）值瓷绝缘子的有效性,紫外成像检测对低（零）值瓷绝缘子能起到一定的辅助检测作用,并提出了一些绝缘子红外图谱的有效分析方法,对电力系统的绝缘工作起到积极的指导意义。
郭磊 +4 more
doaj
Key method of digitization of power distribution panel with artificial intelligence identification for power communication network [PDF]
To enhance the operational management efficiency of the power communication network, artificial intelligence technology was utilized to develop a digitalization method for distribution panels within the communication power system.
CHEN Yitong +4 more
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