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New Reactive Power Compensation Strategies for Railway Infrastructure Capacity Increasing

Author

Listed:
  • Vítor A. Morais

    (Department of Electrical and Computers Engineering, University of Porto, 4200-465 Porto, Portugal)

  • João L. Afonso

    (Centro ALGORITMI, University of Minho, 4800-058 Guimarães, Portugal)

  • Adriano S. Carvalho

    (Department of Electrical and Computers Engineering, University of Porto, 4200-465 Porto, Portugal)

  • António P. Martins

    (Department of Electrical and Computers Engineering, University of Porto, 4200-465 Porto, Portugal)

Abstract

In AC railway electrification systems, the impact of reactive power flow in the feeding voltage magnitude is one aspect contributing to the quality of supply degradation. Specifically, this issue results in limitations in the infrastructure capacity, either in the maximum number of trains and in maximum train power. In this paper, two reactive power compensation strategies are presented and compared, in terms of the theoretical railway infrastructure capacity. The first strategy considers a static VAR compensator, located in the neutral zone and compensating the substation reactive power, achieving a maximum capacity increase up to 50% without depending on each train active power. The second strategy adapts each train reactive power, achieving also a capacity increase around 50%, only with an increase of the train apparent power below 10%. With a smart metering infrastructure, the implementation of such compensation strategy is viable, satisfying the requirements of real-time knowledge of the railway electrification system state. Specifically, the usage of droop curves to adapt in real time the compensation scheme can bring the operation closer to optimality. Thus, the quality of supply and the infrastructure capacity can be increased with a mobile reactive power compensation scheme, based on a smart metering framework.

Suggested Citation

  • Vítor A. Morais & João L. Afonso & Adriano S. Carvalho & António P. Martins, 2020. "New Reactive Power Compensation Strategies for Railway Infrastructure Capacity Increasing," Energies, MDPI, vol. 13(17), pages 1-25, August.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:17:p:4379-:d:403700
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    References listed on IDEAS

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    1. Mohamed Tanta & José Gabriel Pinto & Vitor Monteiro & Antonio P. Martins & Adriano S. Carvalho & Joao L. Afonso, 2020. "Topologies and Operation Modes of Rail Power Conditioners in AC Traction Grids: Review and Comprehensive Comparison," Energies, MDPI, vol. 13(9), pages 1-30, May.
    2. Abril, M. & Barber, F. & Ingolotti, L. & Salido, M.A. & Tormos, P. & Lova, A., 2008. "An assessment of railway capacity," Transportation Research Part E: Logistics and Transportation Review, Elsevier, vol. 44(5), pages 774-806, September.
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    Cited by:

    1. Andrea Mariscotti & Leonardo Sandrolini, 2021. "Detection of Harmonic Overvoltage and Resonance in AC Railways Using Measured Pantograph Electrical Quantities," Energies, MDPI, vol. 14(18), pages 1-22, September.
    2. Zbigniew Olczykowski & Jacek Kozyra, 2022. "Propagation of Disturbances Generated by DC Electric Traction," Energies, MDPI, vol. 15(18), pages 1-22, September.
    3. Mohamed Tanta & Jose Cunha & Luis A. M. Barros & Vitor Monteiro & José Gabriel Oliveira Pinto & Antonio P. Martins & Joao L. Afonso, 2021. "Experimental Validation of a Reduced-Scale Rail Power Conditioner Based on Modular Multilevel Converter for AC Railway Power Grids," Energies, MDPI, vol. 14(2), pages 1-27, January.
    4. Hamed Jafari Kaleybar & Morris Brenna & Federica Foiadelli & Seyed Saeed Fazel & Dario Zaninelli, 2020. "Power Quality Phenomena in Electric Railway Power Supply Systems: An Exhaustive Framework and Classification," Energies, MDPI, vol. 13(24), pages 1-35, December.
    5. Joao L. Afonso & Luiz A. Lisboa Cardoso & Delfim Pedrosa & Tiago J. C. Sousa & Luis Machado & Mohamed Tanta & Vitor Monteiro, 2020. "A Review on Power Electronics Technologies for Electric Mobility," Energies, MDPI, vol. 13(23), pages 1-61, December.

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