Blar i NTNU Open på forfatter "Liu, Zhigang"
-
Assessment of the Current Collection Quality of Pantograph-Catenary with Contact Line Height Variability in Electric Railways
Song, Yang; Duan, Fuchuan; Wu, Fanping; Liu, Zhigang; Gao, Shibin (Peer reviewed; Journal article, 2021)The numerical tools are widely used to facilitate the design of the railway catenary. Only radical results are obtained as the current assessment is generally performed without any practical errors. In this paper, the most ... -
A Comparative Study on the Wind Deflection of Railway Overhead Contact Line Based on Empirical Formula and Finite Element Approach
Chu, Wenping; Song, Yang; Liu, Zhigang (Journal article; Peer reviewed, 2021) -
Contact Wire Irregularity Stochastics and Effect on High-speed Railway Pantograph-Catenary Interactions
Song, Yang; Liu, Zhigang; Rønnquist, Anders; Nåvik, Petter Juell; Liu, Zhendong (Peer reviewed; Journal article, 2020)In high-speed rail operations, contact wire irregularity (CWI) in a catenary is a common disturbance to the pantograph-catenary interaction performance, which directly affects the quality of current collection. To describe ... -
Development of steady arm damper for electrified railway overhead contact line with double pantographs based on numerical and experimental analysis
Chu, Wenping; Song, Yang; Duan, Fuchuan; Liu, Zhigang (Peer reviewed; Journal article, 2021)To improve the carrying capacity, double pantographs are normally used to collect the electric current from the catenary. The mechanical wave excited by the leading pantograph affects the contact of the trailing pantograph ... -
Dynamic Performance of High-Speed Railway Overhead Contact Line Interacting With Pantograph Considering Local Dropper Defect
Song, Yang; Liu, Zhigang; Lu, Xiaobing (Peer reviewed; Journal article, 2020)The local dropper defect is the most common fault in the early service stage of the overhead contact line (OCL) system. The plastic deformation and loose of a dropper may cause the variation of the contact line height, ... -
Effective Measures to Improve Current Collection Quality for Double Pantographs and Catenary Based on Wave Propagation Analysis
Xu, Zhao; Song, Yang; Liu, Zhigang (Peer reviewed; Journal article, 2020)The pantograph installed on the train roof is responsible for collecting the electrical energy via the sliding contact with the catenary constructed along the railroad. To enhance the carrying capacity of the high-speed ... -
An Investigation on the Current Collection Quality of Railway Pantograph-catenary Systems with Contact Wire Wear Degradations
Song, Yang; Wang, Hongrui; Liu, Zhigang (Peer reviewed; Journal article, 2021)In railway pantograph-catenary systems, the contact surfaces undergo wear in long-term operations, directly affecting interaction performance and potentially deteriorating the current collection quality. The effect of ... -
A methodology to study high-speed pantograph-catenary interaction with realistic contact wire irregularities
Song, Yang; Antunes, Pedro; Joao, Pombo; Liu, Zhigang (Peer reviewed; Journal article, 2020)In high-speed rail operations, the irregularity of the overhead system is a typical disturbance that affects the pantograph-catenary interaction performance. The existing methods, which treat the contact wire irregularities ... -
A siamese network-based non-contact measurement method for railway catenary uplift trained in a free vibration test
Duan, Fuchuan; Liu, Zhigang; Zhai, Donghai; Rønnquist, Nils Erik Anders (Peer reviewed; Journal article, 2020)The vibration of the catenary that is initiated by the passing pantograph has a direct influence on the pantograph–catenary contact performance. Monitoring the dynamic uplift of the catenary can help inspectors to evaluate ... -
A spatial coupling model to study dynamic performance of pantograph-catenary with vehicle-track excitation
Song, Yang; Wang, Zhiwei; Liu, Zhigang; Wang, Ruichen (Peer reviewed; Journal article, 2021)In the high-speed railway industry, the pantograph-catenary system is responsible to provide continuous electric energy for the high-speed train. The pantograph-catenary system suffers multiple impacts from the complex ... -
Study on electric spark discharge between pantograph and catenary in electrified railway
Zhou, Hongyi; Duan, Fuchuan; Liu, Zhigang; Chen, Long; Song, Yang; Zhang, Yexin (Peer reviewed; Journal article, 2022)The electric spark caused by pantograph-catenary (PC) electrical contact failure happens frequently, it is a kind of arcing phenomenon which can severely affect the current collection of PC. The theoretical analysis and ... -
Validation and Analysis on Numerical Response of Super-High-Speed Railway Pantograph-Catenary Interaction Based on Experimental Test
Jia, Yang; Song, Yang; Lu, Xiaobing; Duan, Fuchuan; Liu, Zhigang; Chen, Ke (Peer reviewed; Journal article, 2021)The numerical tools can be used to facilitate the design of the railway pantograph-catenary system. The validation of the current numerical results is mostly performed at a speed slower than 350 km/h. This paper aims at ... -
Vibration Measurement and Wave Reflection Analysis in an Electrified Railway Catenary Based on Analytical Methods
Duan, Fuchuan; Liu, Zhigang; Song, Yang; Derosa, Stefano; Rønnquist, Anders; Zhai, Donghai (Peer reviewed; Journal article, 2021)The wave propagation property of the catenary directly affects the pantograph–catenary interaction performance. Specifically, wave reflection and transmission occurring at waveguide discontinuities, particularly at dropper ...