Multi-Objective Short-Term Optimal Dispatching of Cascade Hydro–Wind–Solar–Thermal Hybrid Generation System with Pumped Storage Hydropower

Aiming to mitigate the impact of power fluctuation caused by large-scale renewable energy integration, coupled with a high rate of wind and solar power abandonment, the multi-objective optimal dispatching of a cascade hydro–wind–solar–thermal hybrid generation system with pumped storage hydropower (...

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Bibliographic Details
Published inEnergies (Basel) Vol. 17; no. 1; p. 98
Main Authors Li, Jie, Shi, Linjun, Fu, Hao
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.01.2024
Subjects
Alternative energy sources
Analysis
cascade hydropower
Decision making
Electricity distribution
Energy consumption
Energy storage
Green technology
hybrid generation system
Hydroelectric power
optimal dispatching
Power plants
pumped storage
Renewable resources
Scheduling
Solar energy
Systems stability
Wind power
China
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Summary:Aiming to mitigate the impact of power fluctuation caused by large-scale renewable energy integration, coupled with a high rate of wind and solar power abandonment, the multi-objective optimal dispatching of a cascade hydro–wind–solar–thermal hybrid generation system with pumped storage hydropower (PSH) is proposed in this paper. Based on the proposed system, the scheduling operation strategy takes into account the complex restrictions of cascade hydropower as well as the flexibility of the PSH. According to various scenarios, the NSGA-II approach is adopted to address the optimization problem, minimizing the system’s residual load variation and operation cost. The Pareto solution sets are contrasted and evaluated, applying the TOPSIS with CRITIC weighting. Additionally, the scheduling output of thermal power, cascade hydropower, and PSH is given in terms of different scenarios. The results demonstrate that the allocation of PSH to a hybrid energy system can significantly reduce the operation cost and the fluctuation in the residual load.
ISSN:1996-1073
1996-1073
DOI:10.3390/en17010098