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DC Component From Pantograph Arcing in AC Traction System—Influencing Parameters, Impact, and Mitigation Techniques
- Source :
- IEEE Transactions on Electromagnetic Compatibility. 53:18-27
- Publication Year :
- 2011
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2011.
-
Abstract
- Pantograph arcing in ac traction system generates transients, and causes asymmetries and distortion in supply voltage and current waveforms. These asymmetric voltage and current lead to a net dc component and harmonics that propagate within the traction power and signalling system and cause electromagnetic interference. This problem is enhanced during winter because of the layer of ice/snow on the overhead contact wire. The sliding contact becomes poor and a visible arc moves along with the pantograph. In this paper, it is shown how different parameters like traction current, line speed, power factor, and supply voltage influence the arcing, its characteristics, and the dc components. It is shown that the dc current component increases with increasing train speed and traction current, and reduces at a lower power factor. It is also discussed how the presence of an ice layer influences the arcing and the dc components. It is found that running the trains below the normal operating power factors is an effective choice to mitigate this problem. The findings presented in this paper could be beneficial to estimate the probable limit of the dc component at the planning stage so that proper precautions can be taken at the design stage itself.
- Subjects :
- Engineering
business.industry
Direct current
Electrical engineering
Power factor
Condensed Matter Physics
Atomic and Molecular Physics, and Optics
Automotive engineering
law.invention
Traction power network
law
Harmonics
Power electronics
Electrical network
Pantograph
Electrical and Electronic Engineering
business
DC bias
Subjects
Details
- ISSN :
- 1558187X and 00189375
- Volume :
- 53
- Database :
- OpenAIRE
- Journal :
- IEEE Transactions on Electromagnetic Compatibility
- Accession number :
- edsair.doi...........9ff57ddb4ed01942a025a0b43dd5e3ef
- Full Text :
- https://doi.org/10.1109/temc.2010.2045159