Development of a hybrid Pumped-storage Hydropower–photovoltaic complementary system and analysis of its complementarity characteristics
- 1Sichuan Water Conservancy Vocational College
- 2Sichuan Electric Power Transmission and Transformation Construction Co., Ltd
- 3Key Laboratory of Fluid and Power Machinery (Xihua University), Ministry of Education
Abstract
To enhance power system regulation capability and photovoltaic (PV) energy accommodation under high penetration of renewable energy, a hybrid complementary system composed of conventional hydropower units, reversible pumped-storage units, and a photovoltaic power plant is developed in this study. Based on mathematical models of conventional hydropower operation, pumped-storage operation, and photovoltaic power generation, the operating characteristics and energy conversion mechanisms of each subsystem are systematically analyzed. Taking the Chunchangba hybrid pumped-storage hydropower station in Sichuan Province and a representative photovoltaic power plant as case studies, long-term historical operating data are employed to evaluate interannual variations, intra-annual distributions, and typical daily output characteristics of both stations, and to verify the complementarity of hydro–photovoltaic power outputs. The results indicate that the proposed hybrid pumped-storage hydro–photovoltaic complementary system effectively mitigates the randomness and volatility of photovoltaic intraday output, smooths the photovoltaic power output profile, and reduces the adverse impacts of grid connection on the power system. Moreover, the two power sources exhibit pronounced anti-seasonal complementarity between dry and wet periods, which contributes to suppressing photovoltaic output fluctuations and improving overall system operational stability. Therefore, the hybrid hydropower station and the selected photovoltaic power plant demonstrate strong complementarity in both intra-annual natural conditions and power output distributions. The findings provide practical engineering references for the construction of hybrid hydro–photovoltaic complementary systems and the optimal configuration of photovoltaic capacity.
Related
- Patterns and Outcomes of Occupational Injuries in Emergency Departments at Nigerian Hydropower Plant Hospitals: A Retrospective Study
- Development and validation of a nomogram for predicting anastomotic leakage after esophagectomy: integrating baseline characteristics and early postoperative biomarkers.
- Development of a database for investigating characteristics and quality of published clinical trials in chronic obstructive pulmonary disease: design, implementation, and application
- Target Specific Conformational Flexibility and Electrostatic Complementarity Modulate LTNF10 Peptide Binding to Phospholipase A2 Variants from Snake Venoms
- Can maternal characteristics improve due date prediction without ultrasound? Development and internal validation of a machine-learning prediction model in 600 000 pregnancies in Sweden
BibTeX
@article{mei2026development,
title = {{Development of a hybrid Pumped-storage Hydropower–photovoltaic complementary system and analysis of its complementarity characteristics}},
author = {Yongzhi Mei and Xiong Zhang and Yingyuan Ma and Guangtai Shi and Haigang Wen and Yuqing Zhang},
journal = {Scientific Reports},
year = {2026},
month = jul,
doi = {10.1038/s41598-026-58283-7},
url = {https://doi.org/10.1038/s41598-026-58283-7},
note = {CC BY},
}
RIS
TY - JOUR
TI - Development of a hybrid Pumped-storage Hydropower–photovoltaic complementary system and analysis of its complementarity characteristics
AU - Yongzhi Mei
AU - Xiong Zhang
AU - Yingyuan Ma
AU - Guangtai Shi
AU - Haigang Wen
AU - Yuqing Zhang
PY - 2026
DA - 2026/07/01
JO - Scientific Reports
DO - 10.1038/s41598-026-58283-7
UR - https://doi.org/10.1038/s41598-026-58283-7
AB - To enhance power system regulation capability and photovoltaic (PV) energy accommodation under high penetration of renewable energy, a hybrid complementary system composed of conventional hydropower units, reversible pumped-storage units, and a photovoltaic power plant is developed in this study. Based on mathematical models of conventional hydropower operation, pumped-storage operation, and photovoltaic power generation, the operating characteristics and energy conversion mechanisms of each subsystem are systematically analyzed. Taking the Chunchangba hybrid pumped-storage hydropower station in Sichuan Province and a representative photovoltaic power plant as case studies, long-term historical operating data are employed to evaluate interannual variations, intra-annual distributions, and typical daily output characteristics of both stations, and to verify the complementarity of hydro–photovoltaic power outputs. The results indicate that the proposed hybrid pumped-storage hydro–photovoltaic complementary system effectively mitigates the randomness and volatility of photovoltaic intraday output, smooths the photovoltaic power output profile, and reduces the adverse impacts of grid connection on the power system. Moreover, the two power sources exhibit pronounced anti-seasonal complementarity between dry and wet periods, which contributes to suppressing photovoltaic output fluctuations and improving overall system operational stability. Therefore, the hybrid hydropower station and the selected photovoltaic power plant demonstrate strong complementarity in both intra-annual natural conditions and power output distributions. The findings provide practical engineering references for the construction of hybrid hydro–photovoltaic complementary systems and the optimal configuration of photovoltaic capacity.
SN - 2045-2322
ER -