Power Generation Impact of Hybrid Pumped Storage Units in Small Hydropower Transformation on Hydro-photovoltaic Complementary Systems
In response to the problem of insufficient regulation capacity of small hydropower in the construction process of New Power System,this research proposes an optimized scheduling method for the complementary operation of cascade small hydropower and photovoltaic,and realizes the impact assessment of the hybrid pumped storage unit transformation of small hydropower on the hydro-photovoltaic complementary system,which can guide the multi-energy complementary operation of hydro-photovoltaic-pumped storage.Firstly,with the objective function of maximizing the system's power generation and minimizing the fluctuation of the total system output during the calculation period,a joint scheduling model for cascade hydro-photovoltaic-pumped storage complementary power stations for small hydropower is proposed;Secondly,the basic idea for solving the joint scheduling model of hydro-photovoltaic-pumped storage complementary power stations is proposed,and an improved Progressive Optimization Algorithm is adopted for model solving and calculation;Finally,based on the Xiaojinchuan Basin,a tributary of the Dadu River in Sichuan Province,a case study was conducted to analyze the power generation impact of pumped storage units on the hydro-photovoltaic complementary system by comparing the results of cascade hydro-photovoltaic-pumped storage complementary scheduling with those of cascade hydro-photovoltaic complementary scheduling.The research results indicate that through the calculation of cascade hydro-photovoltaic-pumped storage complementary scheduling and cascade hydro photovoltaic complementary scheduling,the impact of pumped storage units on the power generation of hydro-photovoltaic-pumped storage complementary systems can be evaluated.The research results of this research have certain reference value and ideas for the planning,construction,scheduling and operation of hydro-wind-photovoltaic-pumped storage clean energy bases.
cascade small hydropowerpumped storage unitshydro-photovoltaic complementary systemXiaojinchuan Basin
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