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IMPLEMENTATION OF AN ACTIVE REGENERATION UNIT IN A TRACTION SUBSTATION
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| Author(s) |
Will DE JAGER, Marnix HUIZER, Ernst VAN DER POLS |
| Abstract |
This paper describes the practical implementation of an Active Regeneration Unit (ARU) at twolocations of the metro network in Rotterdam. Surplus braking energy that cannot be used by othervehicles is supplied back into the public grid. Optimal locations for the regeneration units aredetermined by simulations based on the complete infrastructure, the vehicles characteristics and theoperational timetable. The amount of regenerated energy is very dependent on the location. Locationswith an average density of traffic seem to offer the most potential for energy regeneration. Thesimulations show that up to 19\% of the energy normally used over a daily timetable can beregenerated. With increased converter power values of up to 23\% can be achieved.The regeneration range is limited to a voltage range between the zero-load voltage of the transformer-rectifier and the regeneration voltage limit. Regeneration is further limited by the voltage drop over thecontact line and the return path. Therefore, an increase of the regeneration limit is proposed.Several further implementation issues are discussed. These include: the space required for the ARU;the electrical connection to the rectifier; and the protection philosophy to protect the ARU fromexternal disturbances whilst ensuring the maximum availability of the infrastructure. As the ARU willbe connected to the existing installation in the substation, it is important to verify the influence fromARU generated transients and harmonics on the existing installation in a simulation of the completesystem. |
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| Filename: | 0564-epe2014-full-18073717.pdf |
| Filesize: | 1.025 MB |
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| Type |
Members Only |
| Date |
Last modified 2015-06-08 by System |
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