Powerlines, overhead lines, pantograph - Revision history

Novia at 08:58, 11 February 2022

2022-02-11T08:58:37Z

← Older revision		Revision as of 11:58, 11 February 2022
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	<ref>Niklas Kandelin: Icing Factors Affecting Railway Traffic Master of Science Thesis Tampere University Master’s Degree Programme, Materials Science October 2021</ref> <ref>Kloow, L. (2011). High-speed train operation in winter climate. KTH Railway Group Publication 1106.</ref> <ref>Lei Guo et al. (2016) ‘Thermal field analysis of icing contact line under the effect of pantograph-catenary system arc’, in 2016 IEEE International Conference on Power System Technology (POWERCON). [Online]. 2016 IEEE. pp. 1–6.</ref> <ref>Farzaneh, M. (2008) Atmospheric Icing of Power Networks. 1st ed. 2008. [Online]. Dordrecht: Springer Netherlands.</ref> <ref>Akagawa, S. et al. (2017) Frost Heaving in Ballast Railway Tracks. Procedia engineering. [Online] 189547–553.</ref>		<ref>Niklas Kandelin: Icing Factors Affecting Railway Traffic Master of Science Thesis Tampere University Master’s Degree Programme, Materials Science October 2021</ref> <ref>Kloow, L. (2011). High-speed train operation in winter climate. KTH Railway Group Publication 1106.</ref> <ref>Lei Guo et al. (2016) ‘Thermal field analysis of icing contact line under the effect of pantograph-catenary system arc’, in 2016 IEEE International Conference on Power System Technology (POWERCON). [Online]. 2016 IEEE. pp. 1–6.</ref> <ref>Farzaneh, M. (2008) Atmospheric Icing of Power Networks. 1st ed. 2008. [Online]. Dordrecht: Springer Netherlands.</ref> <ref>Akagawa, S. et al. (2017) Frost Heaving in Ballast Railway Tracks. Procedia engineering. [Online] 189547–553.</ref>

			== References ==

Novia at 09:25, 5 January 2022

2022-01-05T09:25:24Z

← Older revision		Revision as of 12:25, 5 January 2022
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	These parts are vulnerable to cold weather, because they are out in the open with very little protection against the weather. The pantograph can accumulate snow easier than the power line alone because the pantograph is a more solid structure. Pantograph is also cooled at high speed because of the air flow around it works like strong wind.		These parts are vulnerable to cold weather, because they are out in the open with very little protection against the weather. The pantograph can accumulate snow easier than the power line alone because the pantograph is a more solid structure. Pantograph is also cooled at high speed because of the air flow around it works like strong wind.

	Power lines also become stiffer at low temperatures, and accreted ice can cause '''arc formation'''. A stiffer line is easier to break, and arcing can cause problems with electricity conduction. While snow is not directly a problem for the powerlines, as the snow accretion is minimal on the line itself, snow can still cause for example tree branches to fall on the powerline. However, the vicinity of the track is usually kept free of trees partly for this reason.		Power lines also become stiffer at low temperatures, and accreted ice can cause '''arc formation'''. A stiffer line is easier to break, and arcing can cause problems with electricity conduction. While snow is not directly a problem for the powerlines, as the snow accretion is minimal on the line itself, snow can still cause for example tree branches to fall on the powerline. However, the vicinity of the track is usually kept free of trees partly for this reason.

			More on this topic: [[Icing on powerlines]]



	<ref>Niklas Kandelin: Icing Factors Affecting Railway Traffic Master of Science Thesis Tampere University Master’s Degree Programme, Materials Science October 2021</ref> <ref>Kloow, L. (2011). High-speed train operation in winter climate. KTH Railway Group Publication 1106.</ref> <ref>Lei Guo et al. (2016) ‘Thermal field analysis of icing contact line under the effect of pantograph-catenary system arc’, in 2016 IEEE International Conference on Power System Technology (POWERCON). [Online]. 2016 IEEE. pp. 1–6.</ref> <ref>Farzaneh, M. (2008) Atmospheric Icing of Power Networks. 1st ed. 2008. [Online]. Dordrecht: Springer Netherlands.</ref> <ref>Akagawa, S. et al. (2017) Frost Heaving in Ballast Railway Tracks. Procedia engineering. [Online] 189547–553.</ref>		<ref>Niklas Kandelin: Icing Factors Affecting Railway Traffic Master of Science Thesis Tampere University Master’s Degree Programme, Materials Science October 2021</ref> <ref>Kloow, L. (2011). High-speed train operation in winter climate. KTH Railway Group Publication 1106.</ref> <ref>Lei Guo et al. (2016) ‘Thermal field analysis of icing contact line under the effect of pantograph-catenary system arc’, in 2016 IEEE International Conference on Power System Technology (POWERCON). [Online]. 2016 IEEE. pp. 1–6.</ref> <ref>Farzaneh, M. (2008) Atmospheric Icing of Power Networks. 1st ed. 2008. [Online]. Dordrecht: Springer Netherlands.</ref> <ref>Akagawa, S. et al. (2017) Frost Heaving in Ballast Railway Tracks. Procedia engineering. [Online] 189547–553.</ref>

Novia at 12:24, 2 January 2022

2022-01-02T12:24:15Z

← Older revision		Revision as of 15:24, 2 January 2022
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	'''Power lines and overhead lines over the railway track, pantograph.'''		'''Power lines and overhead lines over the railway track, pantograph.'''
	[[File:Overhead.jpg\|thumb\|326x326px\|Frost covered overhead wires and a de-icing car.<ref>~~Niklas Kandelin:~~ Icing ~~Factors Affecting~~ Railway ~~Traffic Master of Science Thesis Tampere University Master’s Degree Programme~~, ~~Materials Science October 2021~~</ref>]]		[[File:Overhead.jpg\|thumb\|326x326px\|Frost covered overhead wires and a de-icing car.<ref>He-yun, L. et al. (2012). Icing and Anti-Icing of Railway Contact Wires. Reliability and Safety in Railway, InTech.</ref>]]
	The overhead lines are stationary and the pantograph is the structure on the roof of the train, that connects the power line with the train.		The overhead lines are stationary and the pantograph is the structure on the roof of the train, that connects the power line with the train.

Novia: Created page with "'''Power lines and overhead lines over the railway track, pantograph.''' File:Overhead.jpg|thumb|326x326px|Frost covered overhead wires and a de-icing car.Niklas Kande..."

2022-01-02T12:22:11Z

Created page with "'''Power lines and overhead lines over the railway track, pantograph.''' File:Overhead.jpg|thumb|326x326px|Frost covered overhead wires and a de-icing car.<ref>Niklas Kande..."

New page

'''Power lines and overhead lines over the railway track, pantograph.'''
[[File:Overhead.jpg|thumb|326x326px|Frost covered overhead wires and a de-icing car.<ref>Niklas Kandelin: Icing Factors Affecting Railway Traffic Master of Science Thesis Tampere University Master’s Degree Programme, Materials Science October 2021</ref>]]
The overhead lines are stationary and the pantograph is the structure on the roof of the train, that connects the power line with the train.

These parts are vulnerable to cold weather, because they are out in the open with very little protection against the weather. The pantograph can accumulate snow easier than the power line alone because the pantograph is a more solid structure. Pantograph is also cooled at high speed because of the air flow around it works like strong wind.

Power lines also become stiffer at low temperatures, and accreted ice can cause '''arc formation'''. A stiffer line is easier to break, and arcing can cause problems with electricity conduction. While snow is not directly a problem for the powerlines, as the snow accretion is minimal on the line itself, snow can still cause for example tree branches to fall on the powerline. However, the vicinity of the track is usually kept free of trees partly for this reason.

<ref>Niklas Kandelin: Icing Factors Affecting Railway Traffic Master of Science Thesis Tampere University Master’s Degree Programme, Materials Science October 2021</ref> <ref>Kloow, L. (2011). High-speed train operation in winter climate. KTH Railway Group Publication 1106.</ref> <ref>Lei Guo et al. (2016) ‘Thermal field analysis of icing contact line under the effect of pantograph-catenary system arc’, in 2016 IEEE International Conference on Power System Technology (POWERCON). [Online]. 2016 IEEE. pp. 1–6.</ref> <ref>Farzaneh, M. (2008) Atmospheric Icing of Power Networks. 1st ed. 2008. [Online]. Dordrecht: Springer Netherlands.</ref> <ref>Akagawa, S. et al. (2017) Frost Heaving in Ballast Railway Tracks. Procedia engineering. [Online] 189547–553.</ref>