Contact wire wear measurement and data management

2006 ◽  
Author(s):  
A.W.C. Shing ◽  
G. Pascoschi
Keyword(s):  
Data Management ◽  
Contact Wire ◽  
Wear Measurement ◽  
Wire Wear

scholarly journals Analysis of the evolvement of contact wire wear irregularity in railway catenary based on historical data

2017 ◽  
Vol 56 (8) ◽  
pp. 1207-1232 ◽  
Author(s):  
Hongrui Wang ◽  
Alfredo Núñez ◽  
Zhigang Liu ◽  
Yang Song ◽  
Fuchuan Duan ◽  
...  
Keyword(s):  
Historical Data ◽  
Contact Wire ◽  
Wire Wear

scholarly journals Effect of Temperature Change and Contact-wire Wear on Current Collection Performance

2016 ◽  
Vol 57 (3) ◽  
pp. 199-206
Author(s):  
Mizuki TSUNEMOTO ◽  
Masatoshi SHIMIZU ◽  
Hiroyuki SAITO ◽  
Hiroshi KAJIYAMA
Keyword(s):  
Temperature Change ◽  
Effect Of Temperature ◽  
Contact Wire ◽  
Current Collection ◽  
Wire Wear

510 Prediction Model of Contact Wire Wear based on Commercial Lines Data

2010 ◽  
Vol 2010 (0) ◽  
pp. _510-1_-_510-6_
Author(s):  
Takayuki USUDA ◽  
Mitsuru IKEDA ◽  
Yoshitaka YAMASHITA ◽  
Masataka AKAGI ◽  
Chikara YAMASHITA ◽  
...  
Keyword(s):  
Prediction Model ◽  
Contact Wire ◽  
Wire Wear

Improved Overhead Contact System Operation With Inclined Pendulum Suspension

2018 ◽  
Author(s):  
Paul F. White ◽  
Daria S. Keo ◽  
Gerti Kola
Keyword(s):  
Current Collector ◽  
The United States ◽  
Upward Movement ◽  
Suspension Point ◽  
Current Collectors ◽  
Contact Wire ◽  
The Wire ◽  
Wire Wear ◽  
Single Contact ◽  
Pendulum Suspension

Overhead Contact Systems for electric transit vehicles utilize catenary or single contact wire suspended from cantilevers, bracket arms or span wires. For single contact wire, inclined pendulum suspension provides optimal performance for pantograph or trolley pole current collectors, though it is under-utilized in the United States. Typical suspension for single contact wire consists of direct suspension hangers or stitch suspension with steady arms where stagger is achieved by pulling off the contact wire with the hanger (direct suspension) or steady arms (stitch suspension). This results in the full weight of the contact wire in the span length being supported by the stitch or line insulator. This rigid point of attachment results in a heavy, stiff suspension leading to current collector bouncing, arcing and premature contact wire wear as the upward movement of the wire is restricted and a hard spot is created. It also results in excessive sag at elevated temperatures and contributes to an increased angle at the support span approach. Inclined pendulums can be utilized in constant tension systems or variable tensioned systems where they impart a semi-constant tensioning into the line and keep the wire tension relatively stable over a particular temperature range. The expansion/contraction of the contact wire is taken up in the inclination of the pendulums where they rise or fall so that the tension and sag in the contact wire remains relatively consistent. In addition, they provide less resistance to uplift of the current collectors at the suspension point so that rising of the contact wire occurs as the collector approaches and passes under it. The vertical angle of the contact wire approaching the span support is kept to minimum levels and collector performance during hot weather conditions tends to remain trouble free. Further, the energy wave set up in the wire from the moving collector is not grossly reflected at the suspension point as with direct suspension thus allowing the collector to pass through smoothly without bounce or loss of continuous contact. This paper describes the benefits of inclined pendulums in constant and variable tensioned systems such as creating a semi-constant tensioning effect, preventing current collector bounce and premature contact wire wear at the supports by reducing the uplift resistance on current collectors. It also provides the least visual obtrusiveness of all the suspension systems. In addition, this paper will present the associated costs of the inclined pendulum suspensions.

Contact wire wear on electric railroads

1929 ◽  
Vol 48 (10) ◽  
pp. 756-759 ◽  
Author(s):  
I. T. Landhy
Keyword(s):  
Contact Wire ◽  
Wire Wear

scholarly journals Features of Contact Wire Wear and Measures for Local Wear on Simple Catenary with Copper-Steel Contact Wire

2007 ◽  
Vol 48 (2) ◽  
pp. 83-88 ◽  
Author(s):  
Mizuki TSUNEMOTO ◽  
Satoshi HARADA ◽  
Masatoshi SHIMIZU
Keyword(s):  
Contact Wire ◽  
Wire Wear
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