Electrical Modelling of a DC Railway System with Multiple Trains
Electrical modelling of rail tracks with multiple running trains is complex due to the difficulties in solving the power flow. The train positions, speed and acceleration are constantly varying resulting in a nonlinear system. In this work, a method is proposed for modelling DC electric railways to...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-11-01
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| Series: | Energies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1073/11/11/3211 |
| _version_ | 1817989030347800576 |
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| author | Hammad Alnuman Daniel Gladwin Martin Foster |
| author_facet | Hammad Alnuman Daniel Gladwin Martin Foster |
| author_sort | Hammad Alnuman |
| collection | DOAJ |
| description | Electrical modelling of rail tracks with multiple running trains is complex due to the difficulties in solving the power flow. The train positions, speed and acceleration are constantly varying resulting in a nonlinear system. In this work, a method is proposed for modelling DC electric railways to support power flow analysis of a simulated metro train service. The method exploits the MathWorks simulation tool Simscape, using it to model the mechanical and electrical characteristics of the rail track system. The model can be simulated to provide voltages at any position in the track and additionally, the voltages seen by any train. The model includes regenerative braking on trains, this is demonstrated to cause overvoltage in the feeding line if it is higher than the power demand of the other trains at that time. Braking resistors are used to protect the network from overvoltage by burning the excess energy. Through the implementation of Energy Storage Systems (ESSs), it will be possible to improve the energy efficiency and remove timetabling restrictions of electric railways by effectively controlling the rail track voltage. The paper proposes several methods to validate the model. |
| first_indexed | 2024-04-14T00:42:05Z |
| format | Article |
| id | doaj.art-15be883ecc3848d6ad669fd85a535e9e |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-14T00:42:05Z |
| publishDate | 2018-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-15be883ecc3848d6ad669fd85a535e9e2022-12-22T02:22:09ZengMDPI AGEnergies1996-10732018-11-011111321110.3390/en11113211en11113211Electrical Modelling of a DC Railway System with Multiple TrainsHammad Alnuman0Daniel Gladwin1Martin Foster2Department of Electronic and Electrical Engineering, University of Sheffield, Sheffield S10 2TN, UKDepartment of Electronic and Electrical Engineering, University of Sheffield, Sheffield S10 2TN, UKDepartment of Electronic and Electrical Engineering, University of Sheffield, Sheffield S10 2TN, UKElectrical modelling of rail tracks with multiple running trains is complex due to the difficulties in solving the power flow. The train positions, speed and acceleration are constantly varying resulting in a nonlinear system. In this work, a method is proposed for modelling DC electric railways to support power flow analysis of a simulated metro train service. The method exploits the MathWorks simulation tool Simscape, using it to model the mechanical and electrical characteristics of the rail track system. The model can be simulated to provide voltages at any position in the track and additionally, the voltages seen by any train. The model includes regenerative braking on trains, this is demonstrated to cause overvoltage in the feeding line if it is higher than the power demand of the other trains at that time. Braking resistors are used to protect the network from overvoltage by burning the excess energy. Through the implementation of Energy Storage Systems (ESSs), it will be possible to improve the energy efficiency and remove timetabling restrictions of electric railways by effectively controlling the rail track voltage. The paper proposes several methods to validate the model.https://www.mdpi.com/1996-1073/11/11/3211braking resistorselectric railwaysenergy storage systemregenerative brakingrail track |
| spellingShingle | Hammad Alnuman Daniel Gladwin Martin Foster Electrical Modelling of a DC Railway System with Multiple Trains Energies braking resistors electric railways energy storage system regenerative braking rail track |
| title | Electrical Modelling of a DC Railway System with Multiple Trains |
| title_full | Electrical Modelling of a DC Railway System with Multiple Trains |
| title_fullStr | Electrical Modelling of a DC Railway System with Multiple Trains |
| title_full_unstemmed | Electrical Modelling of a DC Railway System with Multiple Trains |
| title_short | Electrical Modelling of a DC Railway System with Multiple Trains |
| title_sort | electrical modelling of a dc railway system with multiple trains |
| topic | braking resistors electric railways energy storage system regenerative braking rail track |
| url | https://www.mdpi.com/1996-1073/11/11/3211 |
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