Volume 23 Issue 3
Jun.  2023
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ZHOU Hong-yi, LIU Zhi-gang, XIONG Jia-ming, XU Zhao, DENG Yun-chuan. Arc distribution in pantograph-catenary contact based on double-pantograph current collection dynamics[J]. Journal of Traffic and Transportation Engineering, 2023, 23(3): 77-87. doi: 10.19818/j.cnki.1671-1637.2023.03.005
Citation: ZHOU Hong-yi, LIU Zhi-gang, XIONG Jia-ming, XU Zhao, DENG Yun-chuan. Arc distribution in pantograph-catenary contact based on double-pantograph current collection dynamics[J]. Journal of Traffic and Transportation Engineering, 2023, 23(3): 77-87. doi: 10.19818/j.cnki.1671-1637.2023.03.005
shu

Arc distribution in pantograph-catenary contact based on double-pantograph current collection dynamics

doi: 10.19818/j.cnki.1671-1637.2023.03.005
  • 1.

    School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, China

  • 2.

    China Railway Eryuan Engineering Group Co., Ltd., Chengdu 610031, Sichuan, China

Funds:

National Nature Science Foundation of China U1734202

Science and Technology Plan Project of Sichuan Province 2021JDRC0008

Research Project of China Railway Eryuan Engineering Group Co., Ltd. KYY2020132(20-22)

More Information
    Abstract
  • In view of the arc problem during double-pantograph current collection, the microstructure of the pantograph-catenary contact surface was analyzed based on the classical electrical contact theory, and the mechanism of arc occurrence in the pantograph-catenary contact state was discussed. The probability algorithm of arc occurrence in the pantograph-catenary contact was proposed, and the dynamics model of the double-pantograph coupling system was analyzed by considering the fluctuation and propagation laws of the catenary under the double-pantograph current collection. A finite element model of the catenary and a multi-body dynamics model of the pantograph were established to obtain the contact forces on the leading and trailing pantographs under different static lifting forces of trailing pantograph. According to the contact arc probability algorithm and the obtained contact forces, the probabilities of contact arc occurrence on the leading and trailing pantographs under multiple working conditions were calculated, the distribution law of the contact arc under the corresponding contact force was analyzed, and the measures to reduce the probability of contact arc occurrence were proposed. Research results show that the contact arc occurrence probability on the leading pantograph is much smaller than that on the trailing pantograph, its average value is only 32% of the latter average value. The change of static lifting force of the trailing pantograph has little impact on the contact arc occurrence probability on the leading pantograph. The contact arc occurrence probability on the leading pantograph fluctuates between 1.5×10-3 and 5.0×10-3 under four working conditions, and there is no obvious change rule. The contact arc occurrence probability on the tailing pantograph decreases as the static lifting force of the tailing pantograph increases. The average contact arc occurrence probability on the trailing pantograph reduces by 42% as the lifting force increases from 55 N to 85 N. There is no obvious law of contact arc occurrence on the leading pantograph with the distribution of contact force, and the higher static lifting force of the tailing pantograph makes the distribution more uniform. The distribution of the contact arc occurrence probability on the tailing pantograph decreases with the increase of the contact force, and the probability mainly distributes in the low-value range of the contact force. Controlling the contact force within the range of 70-80 N and greater than 170 N can effectively suppress the arc occurrence on the leading pantograph, and controlling the contact pressure more than 70 N can effectively suppress the arc occurrence on the trailing pantograph.

     

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