QUANTITATIVE DEVIATION COMPLEMENTARITY AND ITS APPLICATION IN WIND-SOLAR HYBRID SYSTEMS

Liu Tianze; Zhu Yongqiang; Zhou Jiaxin; Fan Yingqi

doi:10.19912/j.0254-0096.tynxb.2025-0307

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (7) : 641-652. DOI: 10.19912/j.0254-0096.tynxb.2025-0307

QUANTITATIVE DEVIATION COMPLEMENTARITY AND ITS APPLICATION IN WIND-SOLAR HYBRID SYSTEMS

Liu Tianze, Zhu Yongqiang, Zhou Jiaxin, Fan Yingqi

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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.

Key words

solar energy / wind power / hybrid systems / complementarity / quantitative deviation

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Liu Tianze, Zhu Yongqiang, Zhou Jiaxin, Fan Yingqi. QUANTITATIVE DEVIATION COMPLEMENTARITY AND ITS APPLICATION IN WIND-SOLAR HYBRID SYSTEMS[J]. Acta Energiae Solaris Sinica. 2026, 47(7): 641-652 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0307

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