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中文摘要：
针对我国电气化铁路高速、重载下弓网高温引起的弓网热侵蚀问题,提出一种针对弓网滑动电接触在双滑板电接触点下的稳态热模型,说明弓网滑板双点取流和单点取流的热流分布差别。首先从双滑板接触点角度分析弓网受流,依据稳态热平衡方程构建了电接触在双滑板电接触点下的稳态热模型,并给出了边界条件;然后通过非接触式红外热像检测进行了不同条件参数下的稳态双滑板接触点受流测温实验与模型对比;最后验证了该弓网电接触在双滑板电接触点下的稳态热模型可以计算不同弓网接触压力、不同车速、双滑板不同受流、不同距离等情况下的稳态温度分布,并证实了模型的可行性和有效性。
英文摘要：
Taking into consideration thermal erosion problems caused by the high temperature of pantograph and catenary which took a greater current under high speed and heavy haul railway, this paper presented a steady-state thermal model under electric contacts with double conducting slide plates in electric rail system, validating the difference of heat flow distribution between two electric contacts of slide plates and single electric contact. Firstly, the article analyzed the pantograph-catenary current collection from the perspective of double slide contacts and constructed the steady state thermal model for electric contacts under double slide electric contacts based on the thermal balance equation with boundary conditions. Secondly, some contactless infrared thermographic experimental tests were done to measure current collection temperatures at steady state double slide contacts under different parameters. Lastly, the mathematical model can be used to analyze the thermal behavior of electric contact system in steady-state conditions at different values of the electric current, contact force, distance between contacts in the pantograph-catenary system. The feasibility and effectiveness of the obtained mathematical modeling has been testified by comparing the experimental data.
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