Journal
CONTROL ENGINEERING PRACTICE
Volume 83, Issue -, Pages 141-150Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.conengprac.2018.10.018
Keywords
Optimal power flow; Port-Hamiltonian systems; Gradient method; DC networks; Cyclic networks
Funding
- internal project PROSNI-2018
- Mexican PRODEP project [UDG-PTC-1319]
- Government of Spain through the Agenda Estatal de Investigacion Project [DPI2017-85404-P]
- Generalitat de Catalunya, Spain [2017 SGR 872]
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In this paper an algorithm for solving the Optimal Power Flow problem for multi-terminal DC networks based on the gradient method is proposed. The aim is seeking the optimal point subject to voltage, current and power constraints. The algorithm is described by a continuous-time port-Hamiltonian model, and the inequality constrains are included by the use of barrier functions. The dynamics of the algorithm is studied and stability conditions are obtained. Finally, the method is used for the offshore wind integration grid in the North Sea and the interconnection with the network dynamics is tested by means of numerical simulations.
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