ENVIRONMENTAL ECONOMIC DISPATCH OPTIMIZATION OF THERMAL POWER UNITS AT DIFFERENT PEAK-LOAD REGULATION DEPTHS

Yu Xin; Wang Delin; Sun Chao; Niu Jingyao; Xie Peng; Guo Liangjie

doi:10.19912/j.0254-0096.tynxb.2022-0258

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (6) : 152-160. DOI: 10.19912/j.0254-0096.tynxb.2022-0258

ENVIRONMENTAL ECONOMIC DISPATCH OPTIMIZATION OF THERMAL POWER UNITS AT DIFFERENT PEAK-LOAD REGULATION DEPTHS

Yu Xin, Wang Delin, Sun Chao, Niu Jingyao, Xie Peng, Guo Liangjie

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Abstract

Under the background of carbon neutrality and emission peak, in order to achieve the aim of peak-load regulation of power grid to satisfy the demands of more accommodation capacity to new energy and energy conservation and emission reduction of traditional thermal power, this paper puts forward an environmental economic dispatch model of thermal power units at different peak-load regulation depths in large-scale wind power connected to grid with energy-storage system, analyzes the peak-load regulation capacity of thermal power units and the changes of characteristics of coal consumption and CO₂ emission at different peak-load regulation depths, proposes a penalty factor at different peak-load regulation depths to transform multi-objective environmental economic dispatch into single-objective optimization,and establishes an improved gray wolf optimization to solve the model. Compared with the original gray wolf optimization and the particle swarm optimization, the improved gray wolf optimization has better optimization performance. The results show that the cost of coal consumption and CO₂ emission decline with the adding of peak-load regulation depth in RPR and DPR, and the CO₂ emission increases with the adding of peak-load regulation depth in DPRO. Energy-storage system can play the role of decreasing peak load and increasing valley load, greatly reducing the rate of wind curtailment and the total cost of the system.

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environmental economic dispatch / carbon dioxide / coal combustion / peak-load regulation / load distribution / improved gray wolf optimization

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Yu Xin, Wang Delin, Sun Chao, Niu Jingyao, Xie Peng, Guo Liangjie. ENVIRONMENTAL ECONOMIC DISPATCH OPTIMIZATION OF THERMAL POWER UNITS AT DIFFERENT PEAK-LOAD REGULATION DEPTHS[J]. Acta Energiae Solaris Sinica. 2023, 44(6): 152-160 https://doi.org/10.19912/j.0254-0096.tynxb.2022-0258

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