The generation structure in the European power systems is continuously changing towards an increasing share of non-synchronous energy sources. This leads to significant challenges in maintaining frequency stability due to declining system inertia. In this study, a novel concept of demand response very fast active power control (DR VFAPC) capability using in a direct way the braking energy in electric trainsets being in motion is presented. In order to assess the potential to ensure DR VFAPC capability by freight railway carriers and examine the impact of such service on frequency dynamics, a simplified mathematical model of Polish power system representing the frequency regulation process has been developed. The impact of basic characteristics of the freight train transport, as well as the selected power system parameters on the DR VFAPC operation, has been studied. In conclusion, current technical constraints of implementing the presented idea and future works have been discussed.

References

1. 1)
  - 16. Philippe, J., Pagnier, L.: ‘Optimal placement of inertia and primary control in high voltage power grids’. 2019 53rd Annual Conf. on Information Sciences and Systems (CISS), Baltimore, MD, USA, March 2019, pp. 1–6.
2. 2)
  - 3. ENTSO-E.: ‘Frequency stability evaluation criteria for the synchronous zone of continental Europe’, ENTSO-E, 2016.
3. 3)
  - 30. Gómez-Expósito, A., Mauricio, J.M., Maza-Ortega, J.M.: ‘VSC-based MVDC railway electrification system’, IEEE Trans. Power Deliv., 2013, 29, (1), pp. 422–431.
4. 4)
  - 22. Kpoto, K., Sharma, A. M., Sharma, A.: ‘Effect of energy storage system (ESS) in low inertia power system with high renewable energy sources’. 2019 Fifth Int. Conf. on Electrical Energy Systems (ICEES), Chennai India, February 2019, pp. 1–7.
5. 5)
  - 2. Kundur, P., Balu, N.J., Lauby, M.G.: ‘Power system stability and control’ (McGraw-Hill, New York, 1994).
6. 6)
  - 10. ‘Commission regulation (EU) 2016/631 of 14 April 2016 establishing a network code on requirements for grid connection of generators’, Official Journal of the European Union, 27.4.2016.
7. 7)
  - 18. Atia, A., Milanović, J.V., Mancarella, P.: ‘Effect of inertia heterogeneity on frequency dynamics of low-inertia power systems’, IET Gener. Transm. Distrib., 2019, 13, (14), pp. 2951–2958.
8. 8)
  - 9. Eriksson, R., Modig, N., Elkington, K.: ‘Synthetic inertia versus fast frequency response: a definition’, IET Renew. Power Gener., 2017, 12, (5), pp. 507–514.
9. 9)
  - 27. Brenna, M., Foiadelli, F., Zaninelli, D.: ‘DC railway electrification systems’, in ‘Electrical railway transportation systems’ (IEEE Press Series on Power Engineering, United States, 2018), pp. 99–176).
10. 10)
  - 24. ‘Report on rail transport market operations in 2018’, Office of Rail Transport in Poland, Warsaw, 2019.
11. 11)
  - 29. Galaï-Dol, L., De Bernardinis, A., Nassiopoulos, A., et al: ‘On the use of train braking energy regarding the electrical consumption optimization in railway station’, Transp. Res. Procedia, 2016, 14, pp. 655–664.
12. 12)
  - 23. ‘Instruction on manoeuvres technique’, PKP PLK S.A., Warsaw, 2012.
13. 13)
  - 17. Badesa, L., Teng, F., Strbac, G.: ‘Simultaneous scheduling of multiple frequency services in stochastic unit commitment’, IEEE Trans. Power Syst., 2019, 34, (5), pp. 3858–3868.
14. 14)
  - 7. Gonzalez-Longatt, F.: ‘Impact of synthetic inertia from wind power on the protection/control schemes of future power systems: simulation study’. 11th IET Int. Conf. on Developments in Power Systems Protection (DPSP 2012), Birmingham, UK, April 2012, pp. 1–6.
15. 15)
  - 19. Fernández-Guillamón, A., Vigueras-Rodríguez, A., Molina-García, A.: ‘Analysis of power system inertia estimation in high wind power plant integration scenarios’, IET Renew. Power Gener., 2019, 13, (15), pp. 2807–2816.
16. 16)
  - 14. Kroposki, B, Johnson, B., Zhang, Y., et al: ‘Achieving a 100% renewable grid: operating electric power systems with extremely high levels of variable renewable energy’, IEEE Power Energy Mag., 2017, 15, (2), pp. 61–73.
17. 17)
  - 20. Markovic, U., Chu, Z., Aristidou, P., et al: ‘LQR-based adaptive virtual synchronous machine for power systems with high inverter penetration’, IEEE Trans. Sustain. Energy, 2018, 10, (3), pp. 1501–1512.
18. 18)
  - 6. Gloe, A., Jauch, C., Craciun, B., et al: ‘Continuous provision of synthetic inertia with wind turbines: implications for the wind turbine and for the grid’, IET Renew. Power Gener., 2019, 13, (5), pp. 668–675.
19. 19)
  - 28. Réchard, G., Gouttefangeas, R.: ‘Recovering energy from train braking for traction and grid use’, Energy Proc., 2017, 143, pp. 61–66.
20. 20)
  - 21. Seo, G.-S., Colombino, M., Subotic, I., et al: ‘Dispatchable virtual oscillator control for decentralized inverter-dominated power systems: analysis and experiments’. Applied Power Electronics Conf. and Exposition (APEC) 2019, Anaheim, CA, USA, March 2019, pp. 561–566.
21. 21)
  - 4. Denis, G., Prevost, T., Debry, M.-S., et al: ‘The migrate project: the challenges of operating a transmission grid with only inverter-based generation. A grid-forming control improvement with transient currentlimiting control’, IET Renew. Power Gener., 2017, 12, (5), pp. 523–529.
22. 22)
  - 11. ‘Commission regulation (EU) 2016/1447 of 26 August 2016 establishing a network code on requirements for grid connection of high voltage direct current systems and direct current-connected power park modules’, Official Journal of the European Union, 8.9.2016.
23. 23)
  - 25. Ogunsola, A., Mariscotti, A.: ‘Railway traction systems’. Electromagnetic Compatibility in Railways, (LNCS, 168), 2013.
24. 24)
  - 15. Milano, F., Dörfler, F., Hug, G., et al: ‘Foundations and challenges of low-inertia systems’. 2018 Power Systems Computation Conf. (PSCC), Dublin Ireland, June 2018, pp. 1–25.
25. 25)
  - 13. Heard, B.P., Brook, B.W., Wigley, T., et al: ‘Burden of proof: a comprehensive review of the feasibility of 100% renewable electricity systems’, Renew. Sust. Energy Rev., 2017, 76, pp. 1122–1133.
26. 26)
  - 12. ‘Commission regulation (EU) 2016/1388 of 17 August 2016 establishing a network code on demand connection’, Official Journal of the European Union, 18.8.2016.
27. 27)
  - 31. ‘OpenModelica’, https://openmodelica.org/, (Accessed 12 December 2019).
28. 28)
  - 5. Johnson, K.E., Pao, L. Y., Balas, M. J., et al: ‘Control of variable-speed wind turbines: standard and adaptive techniques for maximizing energy capture’, Trans. Control Syst. Technol., 2006, 26, pp. 70–81.
29. 29)
  - 1. Machowski, J., Bialek, J.W., Bumby, J.: ‘Power system dynamics: stability and control’ (John Wiley & Sons, United States, 2011).
30. 30)
  - 26. Szeląg, A., Maciołek, T.: ‘A 3 kV DC electric traction system modernisation for increased speed and trains power demand – problems of analysis and synthesis’, Electr. Rev., 2013, 89, pp. 21–28.
31. 31)
  - 8. Tielens, P., Van Hertem, D.: ‘The relevance of inertia in power systems’, Renew. Sust. Energy Rev., 2016, 55, pp. 999–1009.

Electric freight trains as distributed energy resources supporting frequency stability in power systems

References

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