Convex-Optimization-Based Power-Flow Calculation Method for Offshore Wind Systems

Yuwei Chen (), Haifeng Qi, Hongke Li, Han Xu, Qiang Yang and Qing Chen
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Yuwei Chen: PowerChina Huadong Engineering Corporation Limited, Hangzhou 311122, China
Haifeng Qi: PowerChina Huadong Engineering Corporation Limited, Hangzhou 311122, China
Hongke Li: PowerChina Huadong Engineering Corporation Limited, Hangzhou 311122, China
Han Xu: PowerChina Huadong Engineering Corporation Limited, Hangzhou 311122, China
Qiang Yang: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
Qing Chen: PowerChina Huadong Engineering Corporation Limited, Hangzhou 311122, China

Energies, 2022, vol. 15, issue 20, 1-13

Abstract: Offshore wind farms have boomed worldwide due to the sustainability of wind power and ocean resources. Power grid companies should consider the wind power consumption problem with more power generated. Power-flow calculation is the most fundamental tool in energy management. This paper proposes the convex-relaxation-based method for offshore wind farms’ power flow. In this method, the traditional equations’ problem solving is transferred into standard convex optimization, which can be solved efficiently with unique optimum. Second-order cone relaxations are imposed to describe the quadratic relationship. The exactness of the relaxation is guaranteed with the special definition of the objective function.The superiority of the proposed method is tested on the case study, for which a computational efficiency improvement is shown. Moreover, the reliability of the power-flow results is verified within the precision tolerance.

Keywords: convex optimization; power flow; wind farms; exact convex relaxations (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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