OPTIMAL SCHEDULING OF ACTIVE POWER FOR WIND FARMS BASED ON STATE EVALUATION OF WIND TURBINES UNDER POWER-LIMIT MODE

Wei Shangshang; Ying Xiarong; Gao Yansong; Wang Wei; Xu Chang; Huo Zhihong

doi:10.19912/j.0254-0096.tynxb.2024-0259

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Acta Energiae Solaris Sinica ›› 2024, Vol. 45 ›› Issue (11) : 506-516. DOI: 10.19912/j.0254-0096.tynxb.2024-0259

OPTIMAL SCHEDULING OF ACTIVE POWER FOR WIND FARMS BASED ON STATE EVALUATION OF WIND TURBINES UNDER POWER-LIMIT MODE

Wei Shangshang, Ying Xiarong, Gao Yansong, Wang Wei, Xu Chang, Huo Zhihong

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Abstract

In view of the power-limit operation mode of wind farms, an optimal scheduling method of active power for wind farms based on state evaluation of wind turbines is proposed to achieve optimization control of wind farms with lower computational complexity. Firstly, various indicators in the comprehensive evaluation system of wind turbines are defined, and the deterioration degree of power increase/decrease for the turbines is calculated using the fuzzy entropy method for ranking. Subsequently, the turbines are classified in detail according to their generating states, and the power regulation capabilities of each turbine are determined. Then, based on the classification and ranking of wind turbines, optimal scheduling of active power for a wind farm is implemented. Finally, the proposed optimal scheduling method is simulated and tested based on historical data from a specific wind farm. The results show that the proposed method can achieve high accuracy for power command tracking under different power-limit degrees of wind farms . Meanwhile, the power scheduling based on the comprehensive deterioration degree of turbines can effectively reduce the variation of power fluctuation and load fatigue of turbines, as well as the overall power fluctuation of wind farms.

Key words

wind farm / power control / scheduling algorithms / fuzzy entropy method / comprehensive rating / turbine status classification / load fatigue

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Wei Shangshang, Ying Xiarong, Gao Yansong, Wang Wei, Xu Chang, Huo Zhihong. OPTIMAL SCHEDULING OF ACTIVE POWER FOR WIND FARMS BASED ON STATE EVALUATION OF WIND TURBINES UNDER POWER-LIMIT MODE[J]. Acta Energiae Solaris Sinica. 2024, 45(11): 506-516 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0259

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