全寿命周期成本法下混合直流输电系统的经济效益评估
肖浩然，冯明，陈映竹，黄重钢，陆佳宝
(成都工业学院 自动化与电气工程学院，四川 成都 611730)
摘 要 ：随着混合直流输电技术的进一步发展，其经济性评估研究不足成为亟待解决的问题。运用全寿命周期成本法 (LCCA)，系统性评估了该技术在远海风电场并网中的经济性。分析了混合直流输电的技术优势，构建全寿命周期成本模型并确定关键经济指标计算方法，并以一个400 MW远海风电场为例进 一步验证了混合直流输电的经济性。结果表明，混合直流输电技术较柔性直流输电技术，其初始建设成本、 运维成本分别降低了6.26%、2.96%，净现值提升了12.68%，平准化电力成本降低了9.27%，投资回报率 提升了12.53%；同时通过敏感性分析探讨了关键参数对经济性的影响，以期为我国海上风电发展提供参考。
关键词 ： 混合直流输电 ；海上风电 ；全寿命周期成本 ；经济效益评估
中图分类号 ：TF224.5 ；TM721.1 文献标识码 ：A 文章编号 ：1007-3175(2025)11-0021-07
Economic Benefit Assessment of Hybrid HVDC Transmission Systems Under the Life-Cycle Cost Approach
XIAO Hao-ran, FENG Ming, CHEN Ying-zhu, HUANG Chong-gang, LU Jia-bao
（School of Automation and Electrical Engineering , Chengdu Technological University, Chengdu 611730, China）
Abstract: With the further development of Hybrid HVDC transmission technology, the issue of insufficient research on its economic evaluation has become an urgent problem to be addressed. This paper systematically evaluates the economic viability of this technology in the grid integration of offshore wind farms by employing the life-cycle cost analysis (LCCA). This paper analyzes the advantages of Hybrid HVDC transmission technology, constructs a life-cycle cost model and determines the calculation methods for key economic indicators. Then,taking a 400 MW offshore wind farm as an example, the economic viability of hybrid direct current transmission was further verified. The results show that compared with the flexible DC transmission technology, the initial construction cost and operation and maintenance cost of the hybrid DC transmission technology are reduced by 6.26% and 2.96% respectively, the net present value is increased by 12.68%, the levelized power cost is reduced by 9.27%, and the return on investment is increased by 12.53%. Meanwhile, the influence of key parameters on the economy was discussed through sensitivity analysis, with the aim of providing a reference for the development of offshore wind power in China.
Key words: hybrid HVDC transmission; offshore wind power; life-cycle cost; economic benefit assessment
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