城市轨道交通车辆段再生制动能量电阻吸收装置选型及散热分析
霍长龙
Selection and Heat Dissipation Analysis of Regenerative Braking Energy Absorption Device in Urban Rail Transit Depot
HUO Changlong
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作者信息:中铁第一勘察设计院集团有限公司， 710043， 西安
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Affiliation:China Railway First Survey and Design Institute Group Co., Ltd., 710043, Xi’an, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2024.03.023
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中图分类号/CLCN:U279.1
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栏目/Col:研究报告
摘要:
［目的］城市轨道交通车辆段再生制动能量电阻吸收装置散热量较大，为有效解决此类装置的散热问题，需对再生制动能量电阻吸收装置进行选型，并对其散热能力进行分析。［方法］通过推导得出的城市轨道交通车辆段再生制动能量的计算方法，以及车辆段内的列车运行工况，对再生制动能量电阻吸收装置的电阻值选取、选型及散热分析等方面进行了详细分析。［结果及结论］结合列车在车辆段内的实际运行工况，提出了车辆段再生制动能量电阻吸收装置中制动电阻的计算及选取方法。再生制动能量电阻吸收装置的散热量一般依据该装置峰值功率,并结合其间歇工作的特性进行估算，但该计算方法未考虑热电阻工况，其理论计算值与实际运行工况存在一定程度的偏差。提出了再生制动能量电阻吸收装置的散热功率估算方法，以及散热功率的校验方法，并提出了该装置布置方式的建议方案。
Abstracts:
［Objective］ The regenerative braking energy absorption resistance in urban rail transit depot has a large heat dissipation. In order to effectively solve the problem, it is necessary to select the right type of regenerative braking energy absorption resistance and analyze its heat dissipation capacity. ［Method］ Based on the deduced calculation method of regenerative braking energy and train operating conditions in the urban rail transit depot, three aspects of the resistance are analyzed in detail, i.e. resistance value selection, type selection and heat dissipation analysis. ［Result & Conclusion］ Based on the actual train operation conditions in the depot, the calculation and selection method of the braking resistance in the above energy absorption device is proposed. The heat dissipation of the resistance is generally estimated according to the peak power of the device and in view of the characteristics of its intermittent operation. However, as the thermal resistance working condition is not considered in the above-mentioned calculation method, there is a certain degree of deviation between the theoretical calculation value and the actual operation condition. The estimation and verification methods for the heat dissipation power of the device are put forward. Furthermore, a recommended scheme for the braking energy absorption device layout is proposed.
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