Research on dynamic characteristics of pantograph arc under cross wind
The pantograph arc has become an important factor restricting the further development of high-speed trains. Therefore, in-depth research on the characteristics of pantograph arc is of great significance for further analyzing the damage characteristics of pantograph-catenary system and exploring the...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Department of Electric Drive for Locomotives
2022-07-01
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| Series: | 机车电传动 |
| Subjects: | |
| Online Access: | http://edl.csrzic.com/thesisDetails#10.13890/j.issn.1000-128X.2022.04.022 |
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| Summary: | The pantograph arc has become an important factor restricting the further development of high-speed trains. Therefore, in-depth research on the characteristics of pantograph arc is of great significance for further analyzing the damage characteristics of pantograph-catenary system and exploring the control method of pantograph arc. Combined with the actual wear of the contact wire and the pantograph strip, a two-dimensional dynamic analysis model of the pantograph arc under cross wind was established, the change rule of dynamic characteristics of the pantograph arc under the action of wind was studied. The results show that under the action of external wind, the arc column bends, pulls up, and is accompanied by the phenomenon of arc root jumping; the pantograph strip wears an obvious low wind speed zone. When the arc root is located in this low wind speed zone, the arc root displacement is slow and the arc heat accumulates, which will further aggravate the damage of the pantograph strip wear area; there is a low wind speed area on the right arc surface of the normal contact wire, where the arc root moves slowly, and the heat accumulates, causing damage to the contact wire; when there is wear on the contact wire, that is, the curvature of the bottom is reduced, the arc root of the surface moves faster. The wear of the contact wire and the surface of the pantograph strip will affect the flow field distribution in the arc area, and ultimately lead to differences in the arc root displacement distance and movement speed. |
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| ISSN: | 1000-128X |