AVERAGED MODEL OF DCMGS WITH PV ARRAYS FOR TRACTION SUBSTATION IN HEAVY RAIL SYSTEMS
DOI:
https://doi.org/10.55766/sujst-2023-06-e02497Keywords:
Averaged model, DC micro-grid, DQ method, GSSA method, heavy rail systemsAbstract
This paper presents the mathematical model of DCMGs with PV arrays for traction substation in heavy rail systems. The considered power system consists of many power converters in which the dynamic model is time-varying due to the switching actions inside the power converters. The time-varying model is not useable for the system analysis and design. Hence, this paper describes the way how to derive the time-invariant model using the combination between DQ and GSSA methods. The simulation results using the SimPowerSystem® block set on MATLAB are used to validate the proposed model. The results show that the proposed model can provide the accurate transient and steady-state responses. Moreover, simulations using the proposed model can reduce the simulation time by 72% in comparison with the exact topological model of MATLAB. The resulting averaged models are also very useful for studies of dynamic behavior of complex power systemsReferences
Abdelsalam, A.K., Massoud, A.M., Ahmed, S., and Enjeti, P.N. (2011). High-performance adaptive perturb and observe mppt technique for photovoltaic-based microgrids. IEEE Transactions on Power Electronics, 26(4):1010-1021. https://doi.org/10.1109/TPEL.2011.2106221
Areerak, K.N., Bozhko, S., Asher, G.M., and Thomas, D. (2008). DQ-transformation approach for modelling and stability analysis of ac-dc power system with controlled pwm rectifier and constant power loads. In: 2008 13th International Power Electronics and Motion Control Conference, Poznan, Poland, 2008, p. 2049-2054. https://doi.org/10.1109/EPEPEMC.2008.4635567
Boukenoui, R., Bradai, R., Mellit, A., Ghanes, M., and Salhi, H. (2015). Comparative analysis of P&O, modified hill climbing-FLC, and adaptive P&O-FLC MPPTs for microgrid standalone PV system. In: 2015 International Conference on Renewable Energy Research and Applications (ICRERA), Palermo, Italy, 2015, p. 1095- 1099. https://doi.org/10.1109/ICRERA.2015.7418579
Cespedes, M., Xing, L., and Sun, J. (2011). Constant-power load system stabilization by passive damping. IEEE Transactions on Power Electronics, 26(7):1832-1836. https://doi.org/10.1109/TPEL.2011.2151880
Emadi, A. (2001). Modelling and analysis of multi-converter DC power electronic systems using the generalized state space averaging method. IECON'01. 27th Annual Conference of the IEEE Industrial Electronics Society, (Cat. No.37243), Denver, CO, USA, 2001, 2:1001-1007. https://doi.org/ 10.1109/IECON.2001.975908
Hong, Y., Shuai, Z., Cheng, H., Tu, C., Li, Y., and Shen, Z.J. (2019). Stability analysis of low-frequency oscillation in train-network system using rlc circuit model. IEEE Transactions on Transportation Electrification, 5(2):502- 514. https://doi.org/10.1109/TTE.2019.2905983
Izadian, A., Pourtaherian, A., and Motahari, S. (2012). Basic model and governing equation of solar cells used in power and control applications. In: 2012 IEEE Energy Conversion Congress and Exposition (ECCE), Raleigh, NC, USA, p. 1483-1488. https://doi.org/10.1109/ECCE. 2012.6342639
Kingmaneerat, A., Kulworawanichpong, T., and Ratniyomchai, T. (2023). Traction power substation outage and reliability evaluation for a DC mass rapid transit system. GMSARN International Journal, 17(4):421-428.
Kumar, M., Srivastava, S.C., Singh, S.N., and Ramamoorty, M. (2015). Development of a control strategy for interconnection of islanded direct current microgrids. IET Renewable Power Generation, 9(3):284-296. https://doi.org/10.1049/iet-rpg.2013.0375
Mingpruk, N., Mongkoldee, K., Homjan, J., and Panpean, C. (2023). Utilisation of solar rooftops for energy reduction: a case study for airport rail link. In: 2023 International Electrical Engineering Congress (iEECON), Krabi, Thailand, p. 193-197. https://doi.org/10.1109/ iEECON56657.2023.10127021
Ngamkong, P., Kochcha, P., Areerak, K., Sujitjorn, S., and Areerak, K. (2012). Applications of the generalized state-space averaging method to modelling of DC-DC power converters. Mathematical and Computer Modelling of Dynamical Systems, 18(3):243-260. https://doi.org/ 10.1080/13873954.2011.635377
O'Rourke, C.J., Qasim, M.M., Overlin, M.R., and Kirtley, J.L. (2019). A geometric interpretation of reference frames and transformations: dq0, clarke, and park. IEEE Transactions on Energy Conversion, 34(4):2070-2083. https://doi.org/ 10.1109/TEC.2019.2941175
Pakdeeto, J., Areerak, K., and Areerak, K. (2017). Large-signal model of DC micro-grid systems feeding a constant power load. In: 2017 International Electrical Engineering Congress (iEECON), Pattaya, Thailand, p. 21-24. https://doi.org/10.1109/IEECON.2017.8075724
Pakdeeto, J., Areerak, K., Bozhko, S., and Areerak, K. (2021). Stabilization of DC microgrid systems using the loop-cancellation technique. IEEE Journal of Emerging and Selected Topics in Power Electronics, 9(3):2652-2663. https://doi.org/10.1109/JESTPE.2021.3053349
Phosung, R., Areerak, K., Sopapirm, T., and Areerak, K. (2021). Design and optimization of instability mitigation for AC-DC feeder systems with constant power loads using artificial intelligence techniques. IEEE Transactions on Power Electronics, 37(5):5385-5397. https://doi.org/ 10.1109/TPEL.2021.3136354
Rivetta, C., Williamson, G.A., and Emadi, A. (2005). Constant power loads and negative impedance instability in sea and undersea vehicles: statement of the problem and comprehensive large-signal solution. In: IEEE Electric Ship Technologies Symposium, Philadelphia, PA, USA, p. 313-320. https://doi.org/10.1109/ESTS.2005.1524694
