作者投稿
专家审稿
编辑办公
In-Situ Measurement and Research on Characteristic Spectra of Pantograph-Catenary Arcing in Metro
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摘要: 为更好地满足我国地铁轨道交通弓网系统动态及性能检测核心项目——弓网燃弧标准检测需求，提高检测的准确有效性，建立了基于光纤光谱仪的弓网燃弧光谱原位测试系统，用于实时测量地铁运行中瞬时不定期发生的弓网燃弧特征光谱。介绍了地铁弓网燃弧光谱原位测试系统的设计及其实验室波长准确性定标，并在此基础上开展了地铁运行现场实时试验。以北京地铁某路线的原位实时测试数据为例，结合列车运行监测参数，提取并分析其弓网燃弧特征光谱。数据结果表明，我国地铁弓网燃弧特征光谱区别于自然太阳光和普通照明光源的显著特征光谱在 220～225 nm，峰值波长在224.6 nm。研究结果对于解决目前国际国内标准与学术文章在光谱特征波长方面的分歧提供了实测数据依据，对我国地铁弓网燃弧监测系统的选型和研制以及标定，均具有重要指导意义。Abstract: To better meet the core content of dynamic and performance testing for subway and rail transit pantograph catenary system, that is pantograph-catenary arcing measurement, and to improve the accuracy and effectiveness of measurement, an in situ testing system for the arcing spectrum of the subway pantograph network based on a fiber optic spectrometer has been established for real-time measurement of instantaneous and irregular arcing characteristics spectrum of pantograph and catenary during subway operation. This paper introduces the design of an in situ testing system for the arcing spectrum of pantograph and catenary, as well as the calibration of wavelength accuracy in the laboratory. Based on this, real-time experiments were conducted on subway operation sites. Taking the in-situ measured data of a certain subway line in Beijing as an example, combined with train operation monitoring parameters, the spectral data of the arcing characteristics of the pantograph network were extracted and analyzed. The experimental results shown that the significant characteristic wavelengths of the subway arcing spectra which differ from natural sunlight and ordinary lighting sources are in the range of 220～225 nm with peak wavelength at 224.6 nm. The research results provide a practical basis for resolving the differences between international and domestic standards and academic papers in the spectral characteristic wavelength of subway pantograph-catenary arcing, and have important guiding significance for the selection, development, and calibration of China's subway pantograph and catenary arcing monitoring system.
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Key words:
- metrology /
- pantograph-catenary arcing /
- characteristic spectra /
- in-situ measurement /
- ultraviolet /
- peak wavelength
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图 1 地铁弓网燃弧光谱原位测试系统示意图
Figure 1. Schematic diagram of in-situ spectral testing system for subway pantograph-catenary arcing
图 2 列车运行过程中燃弧的可见（左）和红外（右）照片
Figure 2. Visible (left) and infrared (right) photos of arcing during train operation
图 3 试验过程中所用燃弧探测器的光谱响应度曲线
Figure 3. Spectral response curve of the arcing sensor used during the experiment
图 4 列车运行过程中实时采集的典型光谱曲线
Figure 4. Typical spectral curves collected in real-time during train operation
图 5 列车上行弓网燃弧时间监测数据
Figure 5. Monitoring data of arcing time of train’s upward pantograph network
图 6 列车下行弓网燃弧时间监测数据
Figure 6. Monitoring data of the arcing time of the train’s downward pantograph network
图 7 原位实测燃弧光谱与标准AM1.5G太阳光谱对比图
Figure 7. Comparison between the measured arc spectrum and the standard AM1.5G solar spectrum
表 1 现场实验用光谱仪测量值与标准谱线标准值之间的对比
Table 1. Comparison between the measured values of the spectrometers used in on-site experiments and the standard values of standard spectral lines
标准值/nm 1#光谱仪
测量值/nm2#光谱仪
测量值/nm1#光谱仪
偏差/nm2#光谱仪
偏差/nm253.6 253.4 253.4 −0.2 −0.2 312.6 313.2 313.2 0.6 0.6 404.6 404.6 404.6 0.0 0.0 435.8 435.9 435.9 0.1 0.1 546.1 546.0 546.0 −0.1 −0.1 579.1 578.0 578.0 −1.1 −1.1 
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