Monitoring of overhead contact line based on contact force

Harada, Shinji; Kusumi, Shunichi

doi:10.1049/ic:20060067

Cited by 7 publications

(6 citation statements)

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“…To ensure the seamless collection of power, pantographs must maintain good contact with Overhead Line under all running conditions. The unstable current collection condition on the overhead line caused by contact force fluctuation has been studied in [6]. This study confirms that the contact force amplitude has a correlation with conditions of the height profile of contact wires and the contact wire mechanical faults.…”

Section: Pantograph Loadssupporting

confidence: 60%

Online monitoring of essential components helps urban transport management and increases the safety of rail transport

Daadbin¹,

Rosinski²,

Smurthwaite³

2012

WIT Transactions on the Built Environment

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Complex modern transport systems need to be reliable and operated at high efficiency with the cost of breakdowns kept at a minimum. The well known strategy for maintaining the operation of any integrated system is to choose the appropriate parameters to be monitored continuously. Then, any fault or deviation from the normal operation condition would be detected and the necessary action could be taken to avoid any disruption to the operation and avoid any accident with devastating consequences.This paper looks at monitoring of parameters for essential components in rail transport such as axle vibration and pantograph load, and gives the detail of the systems used in monitoring their operation. The continuously measured data such as torque on the main gearbox shaft or load/acceleration on the pantograph enables diagnosis of potential issues within such systems on routinely operating trains. Variations from the expected values can be detected early and corrected to avoid compromising passenger safety from a more severe failure in the future.The paper discusses the system designed for monitoring the transmitted torque and bending moments in the rail vehicle axle as a mean for identification of any abnormal loading.Pantograph failures due to complex interactions between the overhead line (OHL) and pantograph structure cause significant problems to railway industry worldwide.This paper also describes the design, development and test results from the first fully proven Pantograph Monitoring System which is now deployed on routinely operating trains in the UK.

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Section: Pantograph Loadssupporting

confidence: 60%

Online monitoring of essential components helps urban transport management and increases the safety of rail transport

Daadbin¹,

Rosinski²,

Smurthwaite³

2012

WIT Transactions on the Built Environment

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“…It provides valuable information by quantifying the contact forces at different kilometric points along the railway line. Monitoring the evolution of this contact force can serve as an indicator of contact anomalies and potential issues [ 37 ]. It is worth noting that changes in force can be attributed to both the pantograph and the OCL, and using multiple instrumented pantographs can help detect and analyse these changes effectively.…”

Section: Discussionmentioning

confidence: 99%

A Non-Intrusive Monitoring System on Train Pantographs for the Maintenance of Overhead Contact Lines

Rodríguez-Arana,

Ciáurriz,

Gil-Negrete

et al. 2023

Sensors

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The condition monitoring of an overhead contact line (OCL) is investigated by developing an innovative monitoring system for a pantograph on an electrical multiple unit of a regional line. Kinematic and dynamic modelling of the pantograph is conducted to support the designed monitoring system. The modelling is proved through rigorous test-rig experiments, while the proposed methodology is then validated through extensive field tests. The field tests serve a dual purpose: First, to validate the monitoring system using benchmark measurements of the tCat® trolley, and second, to assess the reproducibility of measurements in a realistic case. This paper presents the OCL monitoring system developed in the framework of the H2020 project SIA. The accuracy of our results is not far from that of other commercial systems, with just 12 mm of absolute error in the height measurement. Therefore, they provide reliable information about trends in various key performance indicators (KPIs) that facilitates the early detection of failures and the diagnosis of anomalies. The results highlight the importance of model calibration and validation in enabling novel health monitoring capabilities for the pantograph. By continuously monitoring the parameters and tracking their degradation trends, our approach allows for optimized scheduling of maintenance tasks for the OCL.

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“…This is because the stiffness of contact wire changes periodically based on the contact wire height [7]. It can also be seen in in-situ measurement data [8] that the pantograph height actually follows the static contact wire height. Fig.…”

Section: The Csw In Pan-head Accelerationmentioning

confidence: 92%

Identification of the catenary structure wavelength using pantograph head acceleration measurements

Wang

Liu

Núñez

et al. 2017

2017 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)

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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.

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Monitoring of overhead contact line based on contact force

Cited by 7 publications

References 0 publications

Online monitoring of essential components helps urban transport management and increases the safety of rail transport

Online monitoring of essential components helps urban transport management and increases the safety of rail transport

A Non-Intrusive Monitoring System on Train Pantographs for the Maintenance of Overhead Contact Lines

Identification of the catenary structure wavelength using pantograph head acceleration measurements

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