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Article

Reliability and Economic Evaluation of Offshore Wind Power DC Collection Systems

1
School of Electrical Engineering, Zhengzhou University, Zhengzhou 450001, China
2
School of Engineering, Cardiff University, Cardiff CF24 3AA, UK
*
Author to whom correspondence should be addressed.
Academic Editor: Francesco Castellani
Energies 2021, 14(10), 2922; https://doi.org/10.3390/en14102922
Received: 16 April 2021 / Revised: 12 May 2021 / Accepted: 14 May 2021 / Published: 18 May 2021
(This article belongs to the Special Issue Innovative HVDC and MVDC Connection Schemes for Offshore Wind Farms)
One key directive to realize the global transition towards net-zero emission goals is to integrate more renewable energy resources into the generation mix. Due to higher and more consistent wind speeds, offshore wind farms (OWFs) have the potential to generate more energy at a steadier rate than their onshore counterpart. However, at the collection system level, all the OWFs use alternating current (AC) technology at present. Nonetheless, with an increasing capacity of the single wind turbine (WT) and larger distances to the shore, the use of direct current (DC) technology at the collection system level is beneficial. To select a suitable DC collection system topology, this paper proposes a comprehensive analytical reliability evaluation method, based on the Universal Generating Function technique, together with associated economic factors. Four candidates DC collection system options were evaluated with different WT capacities for a 400 MW OWF. The availability indices such as Generation Ratio Availability and Expected Energy Not Supplied were used to assess their reliability levels. The results show that the radial topology with a single platform DC/DC converter is more reliable and economical than the other candidate options. View Full-Text
Keywords: DC collection system; economic; offshore wind power; reliability; universal generating function DC collection system; economic; offshore wind power; reliability; universal generating function
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MDPI and ACS Style

Sun, R.; Abeynayake, G.; Liang, J.; Wang, K. Reliability and Economic Evaluation of Offshore Wind Power DC Collection Systems. Energies 2021, 14, 2922. https://doi.org/10.3390/en14102922

AMA Style

Sun R, Abeynayake G, Liang J, Wang K. Reliability and Economic Evaluation of Offshore Wind Power DC Collection Systems. Energies. 2021; 14(10):2922. https://doi.org/10.3390/en14102922

Chicago/Turabian Style

Sun, Ruijuan, Gayan Abeynayake, Jun Liang, and Kewen Wang. 2021. "Reliability and Economic Evaluation of Offshore Wind Power DC Collection Systems" Energies 14, no. 10: 2922. https://doi.org/10.3390/en14102922

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