AUTHOR=Chen Yuwei , Li Hongke , Chen Qing , Xie Rui , Wang Xiaohe 

TITLE=A Convex–Concave Procedure-Based Method for Optimal Power Flow of Offshore Wind Farms

JOURNAL=Frontiers in Energy Research

VOLUME=Volume 10 - 2022

YEAR=2022

URL=https://www.frontiersin.org/journals/energy-research/articles/10.3389/fenrg.2022.963062

DOI=10.3389/fenrg.2022.963062

ISSN=2296-598X

ABSTRACT=In recent years, offshore wind farms have boomed all over the world. It is essential to manage  the energy dispatch of the offshore wind power systems to reduce transmission losses. This paper
proposes an optimization method for optimal power flow of offshore wind power systems based
on convex-concave procedure. Firstly, the nonlinear variables in the power flow constraints of the
offshore wind power system are relaxed with newly-defined variables. Secondly, the non-convex
constraints are reconstructed according to the variables’ characteristics, so that the optimization
satisfies all constraints at the same time. Meanwhile, by applying the Taylor series expansion, the
relaxation variables’ gaps are changed dynamically, the convex relaxation is tightened to ensure the
effectiveness of the proposed method. Finally, the feasibility of the relaxation and the optimized
solution is verified by the simulation to realize the power optimization in the real offshore wind system.