基于平准化度电成本的海上风电分频输电系统经济性分析

Economic analysis of fractional frequency transmission system for offshore wind farm based on levelized cost of electricity

在海上风电大规模、中远化的新发展趋势下,对分频输电系统与其他输电系统的经济性进行了对比分析。基于分频输电系统全生命周期,建立了综合考虑初始资源投入、运行损耗、日常维护、废置处理和应缴税金的分频输电系统平准化度电成本经济性评估模型。以某海上风电场为例,分析了分频输电的经济区间和多场景下经济性变化趋势,结果表明:对于500 MW海上风电场,其经济区间在80~250 km,经济区间较为稳定且在多场景下经济性均优于传统输电系统。

In the context of large-scale and medium-and-long distance offshore wind power development,a comprehensive economic comparison has been made between fractional frequency transmission system(FFTS)and other transmission systems.An economic evaluation model based on the levelized cost of electricity(LCOE)for the FFTS system.This model takes into account the lifecycle,initial resource investment,operational losses,routine maintenance,decommissioning costs,and tax liabilities.By using an offshore wind farm as a case study,the paper analyzes the economic intervals of the FFTS and economic variability under various scenarios.The findings reveal that,for a 500 MW offshore wind farm,the economic interval extends from 80 to 250 kilometers;moreover,this range exhibits a notable degree of stability and demonstrates superior economic viability in contrast to traditional transmission systems across multiple scenarios.