中国电机工程学报2025，Vol.45Issue(z1)：189-201,13.DOI:10.13334/j.0258-8013.pcsee.250620
风-光-火-储系统电力电量平衡机理及优化调度研究
Study on Power Balance Mechanism and Optimal Dispatching of Wind-PV-thermal-storage System
摘要
Abstract
With the accelerated construction of new power systems,the wind-PV-thermal-storage system has gained increasing attention due to its excellent regulating capability and potential for renewable energy integration.In such system,flexible coal-fired units coordinated with energy storage systems serve as dispatchable resources,effectively enhancing system stability and operational independence.To address the challenge of electricity curtailment and purchase under high renewable penetration,this study takes the wind-PV-thermal-storage system as the research object,constructs the power balance equations of the power system to deeply analyze its electricity balance mechanism.The research specifically investigates the thermal-storage coupled output characteristics,revealing the underlying causes of electricity curtailment and electricity purchase.On this basis,based on this,an innovative"Coal-fired Power Regulation"optimal dispatching strategy is proposed,with a comprehensive evaluation index(F)developed to quantify the optimization effects.Moreover,the study conducts example calculations and validations.The results show that,compared to the scenario without the proposed strategy,annual electricity purchase and curtailment are reduced by 52.8%and 35.0%.By adjusting the thermal power output and optimizing the joint dispatch of thermal and storage units,the proposed strategy effectively resolves both static and dynamic mismatches between system flexibility and demand,thereby achieving an optimized dispatching outcome that significantly reduces both electricity curtailment and electricity purchase.This study can provide theoretical support and practical guidance for optimal dispatching of wind-PV-thermal-storage systems.关键词
风-光-火-储系统/优化调度/火-储耦合出力特性/弃电/购电Key words
wind-PV-thermal-storage system/optimal dispatching/thermal-storage coupled output characteristics/electricity curtailment/electricity purchase分类
动力与电气工程引用本文复制引用
田紫芊,杜忠明,刘闯,段丽平,江凯军,王庆华,刘吉臻..风-光-火-储系统电力电量平衡机理及优化调度研究[J].中国电机工程学报,2025,45(z1):189-201,13.基金项目
怀柔实验室项目(ZD2022001A). Program of Beijing Huairou Laboratory(ZD2022001A). （ZD2022001A）
