Estimating Hydropower Generation Flexibilities of a Hybrid Hydro–Wind Power System: From the Perspective of Multi-Time Scales

Xiaokun Man, Hongyan Song and Huanhuan Li ()
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Xiaokun Man: State Grid Shandong Electric Power Construction Company, Jinan 250000, China
Hongyan Song: Zhuhai Xujizhi Power Automation Co., Ltd., Zhuhai 519000, China
Huanhuan Li: School of Water and Environment, Chang’an University, Xi’an 710054, China

Energies, 2023, vol. 16, issue 13, 1-17

Abstract: The increasing penetration of wind energy in electric power systems leads to a great demand for flexible resources to regulate power fluctuations. This paper focuses on investigating the impacts of the operational flexibility of hydropower generation systems on reducing wind curtailment and load shedding in a hybrid hydro–wind power system. Considering timescale variabilities of wind power, the upward and downward regulation capabilities of hydro flexibility under sub-hour and hour dispatch scales are estimated. Based on developed flexible indicators, the ultimate access ratio of wind power penetration into the power system is obtained by using the estimated probability of insufficient regulation reserves. All these analyses are carried out under the wet and dry periods to better understand their differences with the hydro flexibility. The method and obtained results provide important guidance for the stable and high-efficiency operation of hybrid power systems.

Keywords: renewable energy; hydropower; wind power; coordinated optimal operation; flexibility (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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