Authors

Arjan van der Schaft, Tjerk Stegink

Abstract

Increasing integration of renewable energy sources in the power grid leads to a complete re-thinking of its operation. This necessitates the consideration of new modeling and analysis approaches, which can serve as natural starting points for robust and scalable control and design strategies. In this ‘vision’ paper we will highlight two topics within the broad area of power networks: the modeling and analysis of the synchronous generator, and the modeling and analysis of power networks using the swing equation as an approximate model for the generator. In both cases we will discuss a port-Hamiltonian formulation, which reflects the underlying physics of power flow and energy storage. Although the port-Hamiltonian model of the synchronous generator reveals a clear structure it still poses fundamental challenges for its non-zero steady state stability analysis. It is shown how the swing equation can be directly deduced from the power balance of the port-Hamiltonian model of the synchronous generator. Under the phasor assumption, this leads to a port-Hamiltonian model of power networks of generators, which enables a straightforward stability analysis and provides a starting point for control.

Keywords

Synchronous generator; Port-Hamiltonian system; Stability; Shifted passivity; Swing equation; Networks

Citation

BibTeX

@article{van_der_Schaft_2016,
  title={{Perspectives in modeling for control of power networks}},
  volume={41},
  ISSN={1367-5788},
  DOI={10.1016/j.arcontrol.2016.04.017},
  journal={Annual Reviews in Control},
  publisher={Elsevier BV},
  author={van der Schaft, Arjan and Stegink, Tjerk},
  year={2016},
  pages={119--132}
}

Download the bib file

References

  • Caliskan, S. Y. & Tabuada, P. Compositional Transient Stability Analysis of Multimachine Power Networks. IEEE Transactions on Control of Network Systems vol. 1 4–14 (2014) – 10.1109/tcns.2014.2304868
  • Caliskan, Uses and abuses of the swing equation model. (2015)
  • De Persis, (2015)
  • Dorfler, F. & Bullo, F. Kron Reduction of Graphs With Applications to Electrical Networks. IEEE Transactions on Circuits and Systems I: Regular Papers vol. 60 150–163 (2013) – 10.1109/tcsi.2012.2215780
  • Dorfler, F., Simpson-Porco, J. W. & Bullo, F. Breaking the Hierarchy: Distributed Control and Economic Optimality in Microgrids. IEEE Transactions on Control of Network Systems vol. 3 241–253 (2016) – 10.1109/tcns.2015.2459391
  • DUAN, G.-R. & PATTON, R. J. A Note on Hurwitz Stability of Matrices. Automatica vol. 34 509–511 (1998) – 10.1016/s0005-1098(97)00217-3
  • Fiaz, S., Zonetti, D., Ortega, R., Scherpen, J. M. A. & van der Schaft, A. J. A port-Hamiltonian approach to power network modeling and analysis. European Journal of Control vol. 19 477–485 (2013)10.1016/j.ejcon.2013.09.002
  • Galaz, Transient stabilization of power systems via total energy shaping: a comparative simulation study with the classical scheme. (2002)
  • Irving, (2004)
  • Kundur, (1993)
  • Machowski, (2008)
  • Maschke, B., Ortega, R. & Van Der Schaft, A. J. Energy-based Lyapunov functions for forced Hamiltonian systems with dissipation. IEEE Transactions on Automatic Control vol. 45 1498–1502 (2000) – 10.1109/9.871758
  • Natarajan, Almost global asymptotic stability of a constant field current synchronous machine connected to an infinite bus. (2014)
  • Natarajan, A method for proving the global stability of a synchronous generator connected to an infinite bus. (2014)
  • Pai, (1989)
  • Sauer, (1998)
  • Schiffer, (2015)
  • Schiffer, Voltage stability and reactive power sharing in inverter-based microgrids with consensus-based distributed voltage control. (2015)
  • Simpson-Porco, J. W., Dörfler, F. & Bullo, F. Synchronization and power sharing for droop-controlled inverters in islanded microgrids. Automatica vol. 49 2603–2611 (2013) – 10.1016/j.automatica.2013.05.018
  • Simpson-Porco, Voltage stabilization in microgrids via quadratic droop control. (2013)
  • Stegink, A port-Hamiltonian approach to optimal frequency regulation in power grids. (2015)
  • Stegink, (2015)
  • Trip, S., Bürger, M. & De Persis, C. An internal model approach to (optimal) frequency regulation in power grids with time-varying voltages. Automatica vol. 64 240–253 (2016) – 10.1016/j.automatica.2015.11.021
  • van der Schaft, (1996)
  • van der Schaft, A. Characterization and partial synthesis of the behavior of resistive circuits at their terminals. Systems & Control Letters vol. 59 423–428 (2010) – 10.1016/j.sysconle.2010.05.005
  • van der Schaft, (2014)
  • van der Schaft, A. J. & Maschke, B. M. Port-Hamiltonian Systems on Graphs. SIAM Journal on Control and Optimization vol. 51 906–937 (2013)10.1137/110840091
  • van der Schaft, The hamiltonian formulation of energy conserving physical systems with external ports. International Journal of Electronics and Communications (1995)
  • van der Schaft, A., Rao, S. & Jayawardhana, B. On the Mathematical Structure of Balanced Chemical Reaction Networks Governed by Mass Action Kinetics. SIAM Journal on Applied Mathematics vol. 73 953–973 (2013) – 10.1137/11085431x
  • Willems, Reflections on power theories for poly-phase nonsinusoidal voltages and currents. (2010)