NDLI: Optimizing the train power system in Zagreb

Content Provider	IEEE Xplore Digital Library
Author	Capuder, T. Lugaric, L. Brekalo-Strbic, J. Krajcar, S.
Copyright Year	2009
Description	Author affiliation: Power systems department, Faculty of electrical engineering and computing University of Zagreb, Croatia (Capuder, T.; Lugaric, L.; Brekalo-Strbic, J.; Krajcar, S.)
Abstract	To modernize it's rolling stock and increase quality of the municipal public transport service, city of Zagreb, through its public transport company (ZET) made an investment into 140 new NT2200 trains. These trains incorporate asynchronous motors and AC/DC converters, as the tram electrical system is supplied by 660 V DC power. Coincidentally, the occurance of outages in the network increased 60%. This problem doesn't just present financial losses for the public transport company, but also decreases quality of service. In a project study, conducted by the Faculty of electrical engineering and computing, the entire physical and electrical network was modeled and dynamically simulated to discover voltage drops, power losses and peak currents, which have so far been unknown on a system-level. It has been determined that the existing power supply facilities are sufficient to fulfill demands of the existing transportations trains, however with multiple changes to the distribution cables and section separators to enable continuous system operation. Using an optimization procedure, new connecting places for supply lines and cables were determined. The results were also checked by a steady-state model. With projected reinforcements, voltage drops and currents are reduced, and thus the protection devices can be set to lower breaking currents. As a result of electrical network performance indicators improvements, the company will save over 6 million EUR annually.
Starting Page	41
Ending Page	45
File Size	835858
Page Count	5
File Format	PDF
ISBN	9781424426003
DOI	10.1109/VPPC.2009.5289872
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-09-07
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Power systems Voltage Cables Cities and towns Investments AC motors DC motors DC-DC power converters Quality of service Electrical engineering Neplan DC train network tramway network optimization Railsim
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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