Abstract：Research purposes: The construction of the Datong-Xi'an High-speed Railway Line was designed with the speed of 350 km/h, and it will be operated with the speed of 250 km/h. It is proposed to accelerate the operation speed to 300 km/h. To determine the speed-up reconstruction plan, it is necessary to evaluate and verify the traction power supply capacity and equipment status of the existing power supply system. Combined with the growth demand of traction load, the tracking interval of 5 min and 4 min were used to study the voltage level of the traction network and the effective current of the contact system throughout the line. Through the analysis of the distribution of traction power supply facilities, the capacity of traction transformers and other equipment, the reinforcement plan of equipment was determined. The tension of the contact system was determined through pantograph simulation research, which further verified the adaptability of the overhead catenary system basic capacity and components and determined the reconstruction plan. Research conclusions: (1) Through simulation analysis of the traction power supply capacity and equipment of the existing power supply system, the distribution of existing power supply facilities meets the requirements for speed increase. Except the installation capacity of traction transformers in Xi'an North Traction Substation, which meets the requirements, the rest of the traction substations need to be upgraded for capacity expansion. (2) The layout plan distribution equipment of the traction substation remains unchanged, and the current transformers and wires that do not meet the capacity requirements need to be upgraded for capacity expansion. (3) The contact suspension wire type remains unchanged, and the rated tension of the main line is adjusted to 28.5 kN+21 kN, and some parts of the contact network are simultaneously upgraded. (4) The research results can provide reference and guidance for similar projects such as speed increase and quality improvement of high-speed railway traction power supply system.
苏勇. 大同至西安高速铁路提速方案研究[J].高速铁路技术,2022(4):120-124.Su Yong.Study on Speeding-up Reconstruction Option of Datong-Xi'an High-speed Railway[J]. High Speed Railway Technology, 2022(4):120-124.
[2]
谌建民. 既有高速铁路接触网提质达速关键技术研究[J].铁道建筑技术,2021(3):151-154.Chen Jianmin.Research on Key Technologies for Improving Quality and Reaching Speed of Existing High-speed Railway Catenary[J].Railway Construction Technology,2021(3):151-154.
[3]
TB 10621—2014,高速铁路设计规范[S].TB 10621—2014, Code for Design of High Speed Railway[S].
[4]
杨佳,鲁小兵,关金发.高速铁路接触网提速改造策略探讨[J].铁道工程学报,2022(2):85-89.Yang Jia, Lu Xiaobing, Guan Jinfa.Exploration on the Speed-upgrade Improvement Strategy of High-speed Railway Catenary[J]. Journal of Railway Engineering Society,2022(2):85-89.
[5]
TB 10009—2016,铁路电力牵引供电设计规范[S].TB 10009—2016, Design Code of Railway Electric Traction Feeding[S].
[6]
鲁小兵. 高速铁路接触线垂向不平顺影响下的双弓-网动态特性研究[J].电气化铁道,2019(6):39-45.Lu Xiaobing.The Influence to the Double Pantograph-catenary System Especially to the Rear Pantograph-catenary System Caused by the Vertical Uneveness of Contact Wire[J].Electric Railway,2019(6):39-45.
[7]
关金发,吴积钦.受电弓与接触网动态仿真模型建立及其确认[J].铁道科学与工程学报,2017(11):2444-2451.Guan Jinfa,Wu Jiqin.Building and Confirmation for Dynamic Simulation Model of Pantograph and Catenary[J].Journal of Railway Science and Engineering,2017(11):2444-2451.
2024, Vol. 41 
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