该研究给出互补性的新定义,提出基于量值偏差的新型互补性评价方法。定义瞬时互补性和区间互补性,分别用于表征两个变量的实时和整体互补状态;在区间互补性上,进一步区分了单纯互补区间与真互补区间,以突出区间的互补特征。该方法构建相对偏差比和总体偏差减小率两种量化指标,探讨指标的数值关系和范围,并验证该指标相对于现有其他指标的优势和有效性。最后,将该文所提方法用于风光协同系统中的多种场景：分析风光装机配比对量值偏差互补性的影响,并据此确定最佳装机方案,验证其更优的供电可靠性和供需协调性;讨论电力调度部门不同的输电计划曲线制定方式对系统量值偏差互补性的影响;面向量值偏差互补性的提升优化风光出力,并分析验证其降低灵活性需求的有效性。
Abstract
This study provides a new definition of complementarity and proposes a novel complementarity evaluation method based on quantitative deviation. Instantaneous complementarity and interval complementarity are defined to characterize, respectively, the real-time and overall complementary states of two variables. For interval complementarity, pure complementary intervals and true complementary intervals are further distinguished to highlight the complementary characteristics of the interval. The method establishes two quantitative indexes, namely the relative deviation ratio and the overall deviation reduction rate, examines their numerical relationships and value ranges, and verifies the advantages and effectiveness of these indexes compared with existing indexes. Finally, the proposed method is applied to multiple scenarios in wind-solar hybrid systems. Specifically, the influence of wind-solar installed-capacity ratios on quantitative deviation complementarity is analyzed, and the optimal installed-capacity configuration is determined accordingly. The results demonstrate improved power supply reliability and enhanced supply-demand coordination. The study also discusses the effects of different transmission scheduling curve formulation methods adopted by power dispatching departments on the quantitative deviation complementarity of the system. Furthermore, wind and solar power outputs are optimized to enhance quantitative deviation complementarity, and the effectiveness of this optimization in reducing flexibility requirements is analyzed and validated.
关键词
太阳能 /
风电 /
协同系统 /
互补性 /
量值偏差
Key words
solar energy /
wind power /
hybrid systems /
complementarity /
quantitative deviation
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