基于拓扑冗余度评估的大型海上风电场集电系统优化

Optimization of Power Collector System for Large-scale Offshore Wind Farm Based on Topological Redundancy Assessment

深远海风电场环境恶劣,集电系统成本高昂,拓扑规划的经济性、可靠性矛盾尤其突出。文中根据深远海风电场的特殊性以及集电系统对可靠性的更高需求,提出集电系统拓扑结构的冗余度定义,建立基于集电系统拓扑冗余度的多目标优化模型,将经济性、可靠性这对矛盾的变量进行最优规划。案例分析以一个大型海上风电场为例,基于拓扑冗余度评估,从全寿命周期成本的角度对其集电系统拓扑结构进行优化。结果表明,拓扑冗余度最优的结构虽然初始成本略高于放射形结构,运行8年后的全寿命周期成本优势明显,可以满足深远海风电场集电系统的工程实际需求。

Because of the bad environment of wind farms in the far-reaching sea,the cost of power collector system is high.The contradiction between economy and reliability of the power collector system planning is particularly prominent.According to the particularity of the wind farm in the far-reaching sea and the demand of the power collector system on higher reliability,this paper proposes the definition of topological redundancy of the power collector system and develops a multi-objective optimization model based on the topological redundancy.Thus,the contradictory variables of economy and reliability are optimized.Taking a large-scale offshore wind farm as an example,based on the topological redundancy assessment,the topology of its power collector system is optimized from the perspective of life cycle cost.The results show that,although the initial cost of the optimal redundancy topology is slightly higher than that of the radial structure,the advantage of life cycle cost after 8 years of operation is obvious,which can meet the actual engineering requirements of the power collector system for the wind farm in the far-reaching sea.