Abstract
Microgrid concept helps to provide reliable electric power by integrating distributed generators based on renewable energy into the power system network. Grid-connected and autonomous modes of operation of microgrids and power electronic converter-based distributed generators make the microgrids to operate in a highly flexible manner. Since many of the microgrids are dominated by converter-based generators as against the rotating synchronous generators, they have a lower amount of rotating inertia. This causes poor transient frequency response in microgrids. Virtual inertia can be provided to microgrids by virtual synchronous machine-based control of converters. In this method, the converter emulates the behaviour of a synchronous machine and provides virtual inertia with the help of the electrical energy storage. Swing equation is used to derive the equivalent power to be delivered by the inverter to the grid. Simulation of the virtual synchronous machine with the grid-connected inverter was carried out in MATLAB/Simulink platform, and the results indicate the satisfactory operation of the proposed control strategy. An experiment on the laboratory scale model of the grid-connected inverter with virtual synchronous machine control strategy was carried out. The control algorithm was implemented in OPAL-RT real-time simulator. The performance of the virtual synchronous machine is compared with droop control, and the difference in performance with the two schemes is analysed.
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References
P. Tielens, D. Van Hertem, The relevance of inertia in power systems. Renew. Sustain. Energy Rev. 55, 999–1009 (2016)
H.P. Beck, R. Hesse, Virtual synchronous machine, in 9th International Conference on Electrical Power Quality and Utilisation, EPQU (2007), pp. 1–6
J. Driesen, K. Visscher, Virtual synchronous generators, in IEEE Power and Energy Society 2008 General Meeting: Conversion and Delivery of Electrical Energy in the 21st Century, PES (2008), pp. 1–3
Q.C. Zhong, G. Weiss, Synchronverters: inverters that mimic synchronous generators. IEEE Trans. Ind. Electron. 58(4), 1259–1267 (2011)
Q.C. Zhong, P.L. Nguyen, Z. Ma, W. Sheng, Self-synchronized synchronverters: inverters without a dedicated synchronization unit. IEEE Trans. Power Electron. 29(2), 617–630 (2014)
S. D’Arco, J.A. Suul, O.B. Fosso, A Virtual Synchronous Machine implementation for distributed control of power converters in SmartGrids. Electr. Power Syst. Res. 122, 180–197 (2015)
T.V. Kumar, V. Thomas, S. Kumaravel, S. Ashok, Performance of virtual synchronous machine in autonomous mode of operation, in 5th International Conference on Renewable Energy: Generation and Applications (ICREGA) (2018), pp. 310–314
B.K. Poolla, S. Bolognani, F. Dorfle, Optimal placement of virtual inertia in power grids. IEEE Trans. Autom. Control 62(12), 6209–6220 (2017)
J. Liu, Y. Miura, T. Ise, Comparison of dynamic characteristics between virtual synchronous generator and droop control in inverter-based distributed generators. IEEE Trans. Power Electron. 31(5), 3600–3611 (2016)
N. Soni, S. Doolla, M.C. Chandorkar, Improvement of transient response in microgrids using virtual inertia. IEEE Trans. Power Deliv. 28(3), 1830–1838 (2013)
J. Alipoor, Y. Miura, T. Ise, Power system stabilization using virtual synchronous generator with alternating moment of inertia. IEEE J. Emerg. Sel. Top. Power Electron. 3(2), 451–458 (2015)
H. Wu, X. Ruan, D. Yang, X. Chen, W. Zhao, Z. Lv, Q.C. Zhong, Small-signal modeling and parameters design for virtual synchronous generators. IEEE Trans. Ind. Electron. 63(7), 4292–4303 (2016)
Y. Hirase, K. Abe, K. Sugimoto, K. Sakimoto, H. Bevrani, T. Ise, A novel control approach for virtual synchronous generators to suppress frequency and voltage fluctuations in microgrids. Appl. Energy 210, 699–710 (2017)
O. Mo, S. D’Arco, J.A. Suul, Evaluation of virtual synchronous machines with dynamic or quasi-stationary machine models. IEEE Trans. Ind. Electron. 64(7), 5952–5962 (2017)
T. Zheng, L. Chen, Y. Guo, S. Mei, Comprehensive control strategy of virtual synchronous generator under unbalanced voltage conditions. IET Gener. Transm. Distrib. 12(7), 1621–1630 (2018)
J. Liu, Y. Miura, H. Bevrani, T. Ise, Enhanced virtual synchronous generator control for parallel inverters in microgrids. IEEE Trans. Smart Grid 8(5), 2268–2277 (2017)
D. Li, Q. Zhu, S. Lin, X.Y. Bian, A self-adaptive inertia and damping combination control of VSG to support frequency stability. IEEE Trans. Energy Convers. 32(1), 397–398 (2017)
D. Chen, Y. Xu, A.Q. Huang, Integration of DC microgrids as virtual synchronous machines into the AC grid. Ind. Electron. IEEE Trans. 64(9), 7455–7466 (2017)
J. Liu, M.J. Hossain, J. Lu, F.H.M. Rafi, H. Li, A hybrid AC/DC microgrid control system based on a virtual synchronous generator for smooth transient performances. Electr. Power Syst. Res. 162, 169–182 (2018)
S. Mishra, D. Pullaguram, S. Achary Buragappu, D. Ramasubramanian, Single-phase synchronverter for a grid-connected roof top photovoltaic system. IET Renew. Power Gener. 10(8), 1187–1194 (2016)
H. Alrajhi Alsiraji, R. El-Shatshat, Comprehensive assessment of virtual synchronous machine based voltage source converter controllers. IET Gener. Transm. Distrib. 11(7), 1762–1769 (2017)
B.C. Parikshith, V. John, Higher order output filter design for grid connected power converters, in Fifteenth Natl. Power Syst. Conf. (NPSC) (2008), pp. 614–619
D.E. Olivares, A. Mehrizi-Sani, A.H. Etemadi, C.A. Canizares, R. Iravani, M. Kazerani, A.H. Hajimiragha, O. Gomis-Bellmunt, M. Saeedifard, R. Palma-Behnke, G.A. Jimenez-Estevez, N.D. Hatziargyriou, Trends in microgrid control. IEEE Trans. Smart Grid 5(4), 1905–1919 (2014)
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Kumaravel, S., Thomas, V., O’Donnel, T. et al. Transient Frequency Response Improvement in Microgrid Using Virtual Synchronous Machine. J. Inst. Eng. India Ser. B 100, 371–377 (2019). https://doi.org/10.1007/s40031-019-00380-5
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DOI: https://doi.org/10.1007/s40031-019-00380-5