Research & Prospect of Cascade Hydro-photovoltaic-pumped Storage Hybrid Power Generation Technology

Development of renewable energy has become a key strategic measure for energy development in countries around the world. The technology of cascade hydro-photovoltaic-pumped storage hybrid power generation closely combines small cascade hydropower, photovoltaic(PV) power and pumped storage power generation, and realizes complementary optimization of these renewable resources. Taking the cascade hydro-photovoltaic-pumped storage combines power generation technology as the research object, this paper summarizes its research status in recent years, and discusses the prospects of three key technologies of multi-time-scale planning of hydro-photovoltaic-pumped storage power generation which adapts to complex dynamic and static operating conditions, dynamic safe operation interval analysis and cluster control of cascade hydro-photovoltaic hybrid system and intelligent dispatching and optimal control of cascade hydro-photovoltaic-pumped storage hybrid power station with consideration taken on stochastic behaviors. This paper aims to, suggesting research approaches for the research and relevant works on the technology development of cascade hydro-photovoltaic-pumped storage hybrid power generation.