Double-sided ring topology has been widely applied in collector system planning for large-scale offshore wind farms (OWF), owing to its high reliability against cable faults. For collector systems with multiple substations, the conventional topology designs isolate the operation of substations, which requires high transformer capacity within each substation to satisfy the redundancy need. This paper first investigates the economic and reliability benefits of multi-substation incorporation (CSI), and then proposes a new double-sided ring topology with CSI for large-scale OWF collector systems. It encourages the transformer capacity sharing among multiple substations to improve the economic efficiency of collector system and in the meantime preserve the reliability advantage of ring topology. To achieve the optimal topology design, Fuzzy C-means (FCM) clustering method is adopted to locate substations and allocate turbines, and the Two-Phase Clark and Wright's saving algorithm is modified and applied to optimize the cable connection for the proposed topology so as to minimize the overall collector system cost. The proposed topology is tested and compared with traditional isolated topologies on two benchmark collector systems. The test results verify that the proposed the highest economic efficiency while maintaining the collector system reliability.

中文翻译：

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考虑跨变电站合并的大型海上风电场的收集器系统拓扑

双面环形拓扑由于其对电缆故障的高可靠性而被广泛应用于大型海上风电场（OWF）的收集器系统规划中。对于具有多个变电站的收集器系统，常规拓扑设计将变电站的运行隔离开来，这需要每个变电站内具有高变压器容量才能满足冗余需求。本文首先研究了多变电站合并（CSI）的经济性和可靠性优势，然后提出了一种用于大规模OWF收集器系统的带有CSI的新型双面环形拓扑。它鼓励在多个变电站之间共享变压器容量，以提高收集器系统的经济效率，同时保留环形拓扑的可靠性优势。为了实现最佳的拓扑设计，采用模糊C均值（FCM）聚类方法来定位变电站和分配涡轮机，并且修改并应用了两相Clark和Wright的节能算法来优化建议拓扑的电缆连接，从而最大程度地降低了集热器系统的总体成本。测试了所提议的拓扑，并与两个基准收集器系统上的传统隔离拓扑进行了比较。测试结果验证了所提出的最高经济效率，同时保持了集热器系统的可靠性。测试了所提议的拓扑，并与两个基准收集器系统上的传统隔离拓扑进行了比较。测试结果验证了所提出的最高经济效率，同时保持了集热器系统的可靠性。测试了所提议的拓扑，并与两个基准收集器系统上的传统隔离拓扑进行了比较。测试结果验证了所提出的最高经济效率，同时保持了集热器系统的可靠性。