Mathematical Model of Contact Resistance in Pantograph-Catenary System Considering Rough Surface Characteristics

Wang, Zhiyong; Zhou, Qi; Guo, Fengyi; Tang, Aixia; Wanga, Xili; Chen, Xi

doi:10.1109/tte.2021.3095120

Cited by 10 publications

(8 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Ra value not only reflects the change of surface roughness of friction pairs, but also contains important information related to pantograph-catenary current collection characteristics. As shown in FIGURE 2: Ra is the average arithmetic deviation from the contour curve to the least square centerline within the sampling length l , which can be calculated by formula (1). Its unit is μm.…”

Section: Roughness Parameter and Pantograph-catenary Current Collecti...mentioning

confidence: 99%

“…Ⅴ. CONCLUSION (1) The change of surface roughness of friction pairs in sliding electrical contact will affect the current collection characteristics of pantograph-catenary systems. The experimental results have shown that, with the increase of roughness Ra, the pantograph-catenary contact resistance first decreases and then increases, showing an approximate "V" shape change trend.…”

Section: Establish a Comprehensive Evaluation Equation And Obtain The...mentioning

confidence: 99%

“…In terms of macro experiments, many scholars have deeply discussed the evolution law of contact resistance, and have carried out a large number of experiments under conditions with different traction current, sliding speed and contact pressure. The relationship between dynamic contact resistance and these three conditions [1] has been clarified by establishing the corresponding mathematical model [2] . The experimental results show that increasing the contact pressure, reducing the sliding speed and contact current can appropriately reduce the contact resistance and improve the pantograph-catenary current collection quality [3] .…”

Section: ⅰ Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Impact of Surface Roughness on Pantograph-Catenary Current Collection Quality

et al. 2022

Self Cite

View full text Add to dashboard Cite

In the pantograph-catenary system, the change of the surface roughness of pantograph sliding plate directly affects the current collection quality of electric locomotive. In this paper, a large number of current-carrying friction experiments have been carried out on the self-developed high-performance sliding electric contact experimental machine, and the effects of the surface roughness of the sliding friction pair on important performance parameters have been studied, including pantograph-catenary contact resistance (Rj), current carrying efficiency (η), current collection stability (δ) and the friction coefficient (µ). Further, the current conduction mechanism is revealed by the microscopic approach. In order to quantitatively reveal the effect of roughness on each evaluation index of current collecting performance, the paper formulates the functional relationship between Ra (arithmetic mean height of contour) and Rj, η, δ, µ by nonlinear fitting. On this basis, a comprehensive evaluation equation is established by the entropy weight method, and then the optimal Ra value is derived for the best pantograph-catenary current collecting performance. The experimental results show that with the increase of the surface roughness Ra of the sliding plate, Rj decreases first and then increases, while η increases first and then decreases, δ increases monotonically, and µ gradually increases. The optimal pantograph-catenary current collection condition can be achieved by reconciliation of these indices. The research results of this paper provide a theoretical basis for improving the current collection quality of pantograph-catenary systems, and is useful for material selection or new type design of pantograph sliding plates.

show abstract

Section: Roughness Parameter and Pantograph-catenary Current Collecti...mentioning

confidence: 99%

Section: Establish a Comprehensive Evaluation Equation And Obtain The...mentioning

confidence: 99%

Section: ⅰ Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Impact of Surface Roughness on Pantograph-Catenary Current Collection Quality

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…During the train operation, the upper surface of the pantograph sliding plate directly contacts the catenary conductor. Under the action of internal lifting force, the pantograph will change the height of the sliding plate according to the change of the catenary conductor height, so as to ensure good pantograph catenary contact [4]. At the same time, in order to ensure that the catenary conductor will not be separated from the pantograph sliding plate and increase the service life of the pantograph sliding plate, it is required that there is a certain distance between the contact line and the center of the train pantograph carbon sliding plate, which is called the "zigzag" value in the straight line section and the pull-out value in the curve section.…”

Section: Introductionmentioning

confidence: 99%

Pantograph Catenary Performance Detection of Energy High-Speed Train Based on Machine Vision

Wang¹,

Li²,

Tan³

et al. 2022

Mathematical Problems in Engineering

View full text Add to dashboard Cite

With the rapid development of high-speed rail in China, addressing the issue of safety assurance during the operation of the train is very important. A very important part of a train’s power supply system is the pantograph and catenary system, which consists of a pantograph and a catenary. Failure of the pantograph-catenary system can cause significant damage to the normal operation of the train. The dynamic performance of the pantograph-catheter system must be detected in real time during the operation of the train. This paper is based on the study and analysis of pantograph-catheter dynamic performance parameters and developed a system for real-time detection of pantograph-catheter dynamic performance parameters based on a car visual system. The results are as follows: based on this detection method, the visual error is low and the accuracy is high. The machine-based directional height detection module developed in this paper has a good detection effect and high test accuracy; the arcing detection module designed in this paper can effectively detect the arcing and store the arcing pictures and can display the duration of single arcing and the arcing rate of the section in real-time. The practical application effect is good. The results show that the focal length of the camera lens is 16 mm, and the error of the machine vision system is low. The system designed in this paper may make a great contribution to the operation condition monitoring and fault diagnosis of the pantograph-catenary system of a high-speed train in the future.

show abstract

“…One research group [17] reduced wear by covering copper slip-ring surface with molybdenum disulphide. Another research group [18] established a contact resistance model of the pantograph-catenary system considering the contact surface roughness. Literature [19,20] studied sliding electrical contact from contact resistance and friction factor.…”

Section: Introductionmentioning

confidence: 99%

Carbon brush wear calculation in marine environment based on temperature field analysis

Shaokui

Cheng

2022

IET Renewable Power Gen

View full text Add to dashboard Cite

In the marine environment, the working environment of the doubly fed wind generator carbon brush and slip-ring system is complicated, salt spray deposits and seawater erosion affect the temperature field and contact surface friction factor leading to carbon brush wear increase and shortened replacement cycle. The three-dimensional temperature field simulation model of the carbon brush and slip-ring system is established. The main factors affecting the carbon brush and slip-ring system temperature field are sliding velocity, load current, ambient temperature, contact surface condition and contact pressure applied to the brush. Wear capacity of carbon brushes is affected by contact surface temperature. An experimental platform combined with the salt spray test machine was built to carry out the contact current, contact pressure, salt spray concentration and experimental temperature experiment. The improved Coulomb-viscous friction force model was used for the wear prediction model. The sliding velocity, contact pressure, contact current, experimental temperature and salt spray concentration were introduced into the model. The experimental verification has shown that the prediction model can effectively predict the carbon brush wearing capacity under different conditions. This model can be applied to formulating the carbon brush wear amount and replacement cycle in the marine environment reducing operation and maintenance costs.

show abstract

Mathematical Model of Contact Resistance in Pantograph-Catenary System Considering Rough Surface Characteristics

Cited by 10 publications

References 16 publications

Impact of Surface Roughness on Pantograph-Catenary Current Collection Quality

Impact of Surface Roughness on Pantograph-Catenary Current Collection Quality

Pantograph Catenary Performance Detection of Energy High-Speed Train Based on Machine Vision

Carbon brush wear calculation in marine environment based on temperature field analysis

Contact Info

Product

Resources

About