Impact of overhead line irregularity on current collection and diagnostics based on the measurement of pantograph dynamics

IEEE Trans. Instrum. Meas.

Wang

Dollevoet

et al. 2016

. Ensemble EMD-based automatic extraction of the catenary structure wavelength from the pantograph-catenary contact corce. IEEE Transactions on Instrumentation and Measurement, 65(10), 2272-2283. https://doi.org/10.1109/TIM.2016.2579360 Important note To cite this publication, please use the final published version (if applicable). Please check the document version above. CopyrightOther than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons. Takedown policyPlease contact us and provide details if you believe this document breaches copyrights. We will remove access to the work immediately and investigate your claim.

Section: Introductionmentioning

confidence: 99%

Ensemble EMD-Based Automatic Extraction of the Catenary Structure Wavelength From the Pantograph–Catenary Contact Force

IEEE Trans. Instrum. Meas.

Wang

Dollevoet

et al. 2016

“…Collina et al [125] analyzed the influences of contact wire irregularity on the current collection based on in situ measurements combining with simulation results. The pantograph vertical acceleration is employed to reflect and diagnose the state of contact wire irregularity.…”

Section: Static State Evaluation Of Catenary Systemmentioning

confidence: 99%

Advances of research on high-speed railway catenary

Song

et al. 2017

J. Mod. Transport.

The interaction between the catenary and pantograph is one of the most crucial factors that determine the train operation in high-speed railway. The bad state of catenary is able to directly influence the power supply safety of traction power system. In this paper, four aspects on the catenary research of high-speed railway are reviewed in detail, namely the solution methods for catenary equilibrium state, the dynamic modeling methods of catenary, non-contact detection methods of catenary, and the static and dynamic evaluation methods of catenary. In addition, their recent advances are described. For the low solution accuracy of the initial equilibrium state of catenary, the structure finding method with multi-objective constraint and nonlinear finite element procedure are introduced to solve the problem. For the catenary's dynamic modeling, considering the influence of environmental wind on the catenary, environmental wind simulations and wind tunnel tests are used to obtain the aerodynamic coefficients and build the wind field along the catenary for analysis of its wind vibration characteristics. In order to improve the detection accuracy of non-contact detection for the catenary, the deep learning theory and real-time detection algorithms should be adopted in the future. In view of the lack of dynamic assessment method for the catenary, the modern spectrum evaluation, timefrequency analysis, big data technology and their combinations will be the important means for future catenary evaluation.Keywords High-speed railway Á Modeling of catenary Á Simulation of catenary Á Detection of catenary Á Evaluation of catenary

“…Basic parameters of the adopted sensors are described in Table I, where FS denotes the sensor full scale and g is the gravitational acceleration. The results of contact force are corrected as required by (1).…”

Section: Data Measurement and Pre-processingmentioning

confidence: 99%

“…In most of the electrified railways, vehicles receive traction current through the sliding contact between pantograph and catenary above the roof. Due to the intrinsic characteristics of the pantograph-catenary system and various environmental disturbances [1], the contact force between pantograph and catenary fluctuates during operation and determines the current collection quality. Therefore, even expensive, a reliable health condition monitoring technology for the pantograph-catenary system often adopts the contact force as the key measurement parameter to assess the dynamic interaction and eventually the current collection quality [2].…”

Section: Introductionmentioning

confidence: 99%

Identification of the catenary structure wavelength using pantograph head acceleration measurements

Wang

2017 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)

Núñez

et al. 2017

For the condition monitoring of railway catenaries, the potential utilization of pantograph head (pan-head) vertical acceleration instead of pantograph-catenary contact force is discussed in this paper. In order to establish a baseline of the pan-head acceleration before it can be used for health condition monitoring, one of the essential frequency components, namely the catenary structure wavelength (CSW) is studied. Based on insitu measurements and feature analysis of the pan-head acceleration signal, an adaptive signal filtering approach is proposed to realize the identification of the CSWs. Preliminary results suggest that the CSWs contained in the pan-head acceleration can be reliably identified by the proposed filtering approach.