中国电机工程学报2025，Vol.45Issue(13)：5044-5060,中插9,18.DOI:10.13334/j.0258-8013.pcsee.232790
梯级水能循环模式下多能系统互补运行研究:以龙羊峡—拉西瓦基地为例
Complementary Operation of Multi-energy System Considering Cascade Hydropower Recycling:A Case of the Longyangxia-Laxiwa Base
摘要
Abstract
There have been new changes in the upper reaches of the Yellow River,such as the large-scale installed capacity of new energy and the recycling of cascade hydropower.Taking the Longyangxia-Laxiwa system as an example,this paper establishes a multi-objective optimization model for short-term complementary operation of a hydro-PV-wind-storage multi-energy system,with the objective of maximizing power generation and system stability.The Pareto-set solutions,optimal power supply areal accumulation graph of the multi-energy system as well as the optimized fore-bay water level and discharge of conventional hydropower and reversible pumped-storage unit are provided under different scenarios such as different combinations of power supplies,installed capacities,seasons,and weather conditions.The results show that with the improvement of stability of the multi-energy system,the power generation is decreased,and the abandonment rate of new energy is increased.The reversible unit uses the abandoned solar and wind power to pump water and discharge water to generate power,which has the dual role of energy storage and peak regulation.In contrast,the conventional hydropower expansion only has the role of peak regulation.Therefore,the reversible unit outperforms the conventional hydropower expansion in terms of total power generation,system stability,and new energy utilization.With the increasing installed capacities of wind and PV,it is necessary to further increase the installed capacity of reversible unit,but it is also faced with the increased fluctuation of water level and discharge,which has a certain impact on the safe and stable operation of the project.Under the same season and weather scenario,system power generation grows significantly with installed capacity while conventional hydropower remains stable.Reversible units operate in pumping mode during daytime PV generation and switch to power generation at night.关键词
多能互补/短期调度/多目标优化/常规水电扩机/可逆式机组/龙羊峡—拉西瓦系统Key words
multi-energy complementary operation/short-term scheduling/multi-objective optimization/conventional hydropower expansion/reversible pumped-storage unit/Longyangxia-Laxiwa system分类
建筑与水利引用本文复制引用
曹炯玮,李想,魏加华,高洁,吴睿妍..梯级水能循环模式下多能系统互补运行研究:以龙羊峡—拉西瓦基地为例[J].中国电机工程学报,2025,45(13):5044-5060,中插9,18.基金项目
国家自然科学基金项目(U2243232,U2243239) （U2243232,U2243239）
国家重点研发计划项目(2023YFC3206701) （2023YFC3206701）
三江源生态与高原农牧业国家重点实验室(青海大学)开放基金项目(2023-KF-02). Project Supported by National Natural Science Foundation of China(U2243232,U2243239) （青海大学）
National Key R&D Program of China(2023YFC3206701) （2023YFC3206701）
The Open Project of State Key Laboratory of Plateau Ecology and Agriculture(Qinghai University)(2023-KF-02). （Qinghai University）
