Contact Wire Irregularity Stochastics and Effect on High-Speed Railway Pantograph-Catenary Interactions

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Sökning: L773:0018 9456 OR L773:1557 9662 > (2020-2024) > Contact Wire Irregu...

Song, Yang (författare)

Contact Wire Irregularity Stochastics and Effect on High-Speed Railway Pantograph-Catenary Interactions

Artikel/kapitelEngelska2020

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IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC,2020
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LIBRIS-ID:oai:DiVA.org:kth-283898
https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-283898URI
https://doi.org/10.1109/TIM.2020.2987457DOI

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Språk:engelska
Sammanfattning på:engelska

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QC 20201201
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 the pointwise stochastics of CWI, the power spectral density (PSD) function for CWI is proposed, and its effect on the pantograph-catenary interaction is investigated. First, a preprocessing procedure is proposed to eliminate the redundant information in the measured irregularities based on the ensemble empirical mode decomposition (EEMD). Then, the upper envelope of the irregularity, which contains all the information regarding the dropper positions on the contact wire, is extracted. A form of the PSD function is suggested for contact wire irregularities. A methodology is proposed to include the effect of random irregularities in the assessment of the interaction performance of a pantograph-catenary. A developed target configuration under dead load (TCUD) method is used to calculate the initial configuration of the catenary, in which the dropper points on the contact wire are placed on their exact positions. Finally, the effect of the random contact wire irregularities on the contact force is investigated through 500 numerical simulations at each operating speed. The present results indicate that random irregularities have a direct impact on the pantograph-catenary contact, including an increment in the dispersion of the contact force statistics. The stochastic analysis shows that over 70% of the results with irregularities are worse than the ideal result without irregularities.

Ämnesord och genrebeteckningar

TEKNIK OCH TEKNOLOGIER Maskinteknik Farkostteknik hsv//swe
ENGINEERING AND TECHNOLOGY Mechanical Engineering Vehicle Engineering hsv//eng
Wires
Rail transportation
Measurement errors
Gravity
Frequency measurement
Electronic mail
Contact force
contact wire irregularity (CWI)
current collection quality
high-speed railway
pantograph-catenary interaction
power spectral density (PSD)
probability analysis

Biuppslag (personer, institutioner, konferenser, titlar ...)

Liu, Zhigang (författare)
Rönnquist, Anders (författare)
Navik, Petter (författare)
Liu, Zhendong,1983-KTH,Spårfordon(Swepub:kth)u1xztwij (författare)
KTHSpårfordon (creator_code:org_t)

Sammanhörande titlar

Ingår i:IEEE Transactions on Instrumentation and Measurement: IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC69:10, s. 8196-82060018-94561557-9662

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Av författaren/redakt...: Song, Yang; Liu, Zhigang; Rönnquist, Ander ...; Navik, Petter; Liu, Zhendong, 1 ...

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TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Maskinteknik; och Farkostteknik

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Av lärosätet: Kungliga Tekniska Högskolan

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