电工技术学报2016，Vol.31Issue(24)：62-70,9.
弓网电弧等离子体光谱特性实验
Experimental Investigation on Spectral Characteristics of Pantograph-Catenary Arc Plasma
摘要
Abstract
Pantograph-catenary arc plasma, with high temperature and high energy density, can severely threaten the electrical contact performance of pantograph-catenary system in high speed railway. In this paper, pantograph-catenary arc experiments were conducted based on arc simulative platform in laboratory. The characteristic of pantograph-catenary arc plasma was studied by spectral diagnosis method, and then the primary characteristic lines were recognized and classified. The excitation temperature, rotational temperature, vibrational temperature and electron density were also calculated, respectively. Meanwhile, the influence of input current on excitation temperature and electron density was analyzed. The results show that abundant copper, iron and CN B2∑+→X2∑+characteristic lines would occur due to the intense erosion effects of pantograph-catenary arc plasma on copper wire and metal impregnated strips. In addition, it is found that the excitation temperature of pantograph-catenary arc plasma increases with the increase of current based on Boltzmann plot. The rotational temperature and vibrational temperature reach up to 6 800K and 9 000K respectively when the current is 30A, according to the theoretical calculation with the spectral line of CN B2∑+→X2∑+. Furthermore, the broadening mechanism of characteristic lines was discussed, and by Cu I 521.82nm characteristic line the increasing tendency of electron density with the input current was analyzed.关键词
弓网电弧等离子体/发射光谱/激发温度/转动温度/振动温度Key words
Pantograph-catenary arc plasma/emission spectrum/excitation temperature/rotational temperature/vibration temperature分类
信息技术与安全科学引用本文复制引用
胡怡,魏文赋,雷栋,高国强,吴广宁..弓网电弧等离子体光谱特性实验[J].电工技术学报,2016,31(24):62-70,9.基金项目
国家自然科学基金资助项目（U1234202、51325704、51577158、51607147）。 （）
