Regulation capability of small cascade hydropower stations for photovoltaic generation,Journal of Renewable and Sustainable Energy

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Regulation capability of small cascade hydropower stations for photovoltaic generation
Journal of Renewable and Sustainable Energy ( IF 2.5 ) Pub Date : 2020-09-01 , DOI: 10.1063/5.0010831
Yanmei Zhu ₁ , Shijun Chen ₁ , Guangwen Ma ₁ , Weibin Huang ₁ , Xiaoyan Han ₂ , Lijie Ding ₂

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The stochasticity of photovoltaic (PV) generation output makes it necessary to smooth the output using other flexible power sources to realize the scale development of PV power. Small cascade hydropower stations (SCHSs) are also widely distributed in space, like PV generation. Therefore, it is proposed to utilize the regulation capability of SCHSs to complement PV generation. Targeting the maximization of the utilization rate of outgoing lines (utilization rate for short) of the system, the minimization of the curtailment rate, and the maximization of the minimum output within a time frame, a model for exploring the capability of SCHSs for regulating PV generation was established and solved by a hierarchical optimization method. By taking two small hydropower stations (the Mupo and Yangjiawan stations) on the Fabian River with a total installed capacity of 105 MW and the surrounding PV power source in China's Sichuan Province as examples, it was found that SCHSs can regulate a certain level of PV generation through the combined operation of cascade reservoirs and reduce the fluctuations and stochasticity of the PV generation output. The results have far-reaching significance on the large-scale development of PV generation.

更新日期：2020-09-01

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