Authors

Walter Julian Gil-Gonzalez, Alejandro Garces, Olav Bjarte Fosso, Andres Escobar-Mejia

Abstract

This paper proposes an interconnection and damping assignment passivity-based control (IDA-PBC) for multimachine power systems including hydro-turbine governing systems (HTGS) with surge tank. The main objective is to stabilize the rotor speed and regulate the terminal voltage of each synchronous machine in a power system. The proposed control is decentralized, thus avoiding challenges of communication between generators. Passivity theory is used since the open-loop of the HTGS presents a port-Hamiltonian structure. IDA-PBC allows a control law that maintains the passive structure in closed-loop, guaranteeing its asymptotic stability using Lyapunov’s theory. The dynamics of each HTGS are described by an eleventh-order model, which can be reduced to a tenth-order. The proposed control is tested in a 12-bus test system and compared to a standard control, which considers a voltage regulator and exciter based on the IEEE type ST1A excitation system model and power system stabilizer IEEE-PSS1A. The governing system based on a PID control with static and transient droop is also employed. Additionally, the proposed controller is compared to a sliding mode controller. Time-domain simulations demonstrate the robustness and appropriate performance of the proposed decentralized control under different large disturbances.

Citation

  • Journal: IEEE Transactions on Power Systems
  • Year: 2020
  • Volume: 35
  • Issue: 3
  • Pages: 2002–2011
  • Publisher: Institute of Electrical and Electronics Engineers (IEEE)
  • DOI: 10.1109/tpwrs.2019.2948360

BibTeX

@article{Gil_Gonzalez_2020,
  title={{Passivity-Based Control of Power Systems Considering Hydro-Turbine With Surge Tank}},
  volume={35},
  ISSN={1558-0679},
  DOI={10.1109/tpwrs.2019.2948360},
  number={3},
  journal={IEEE Transactions on Power Systems},
  publisher={Institute of Electrical and Electronics Engineers (IEEE)},
  author={Gil-Gonzalez, Walter Julian and Garces, Alejandro and Fosso, Olav Bjarte and Escobar-Mejia, Andres},
  year={2020},
  pages={2002--2011}
}

Download the bib file

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