#6578. Security constrained OPF for AC/DC systems with power rescheduling by power plants and VSC stations

December 2026publication date
Proposal available till 05-06-2025
4 total number of authors per manuscript0 $

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Journal’s subject area:
Electrical and Electronic Engineering;
Control and Systems Engineering;
Energy Engineering and Power Technology;
Renewable Energy, Sustainability and the Environment;
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Abstract:
This paper describes a novel modelling framework for security constrained optimal power flows (SCOPF) aimed at multi-terminal VSC-based AC/DC systems, where power rescheduling by power plants and converters is considered by means of voltage/power droop controls. The optimisation method is based on a linear programming model where generation cost curves and AC/DC power losses are included by piecewise linear functions. The formulation accommodates arbitrary network models with numerous VSC-connected AC grids. This leads to a suitable modelling flexibility for corrective SCOPF analysis of practical AC/DC grids formed by VSC-based transmission grids. The proposed SCOPF formulation enables efficient contingency analysis involving the disconnection of AC branches, DC lines, power plants, and VSC units. This is confirmed using an AC/DC grid with four VSC-connected AC systems.
Keywords:
AC/DC systems; HVDC links; Linear programming; Power rescheduling; Security constrained OPF; VSC units

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