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Operation Optimization of Concentrating Solar Power-Wind-Photovoltaic Combined Power Generation System

As a novel utilization of solar energy, Concentrating Solar Power(CSP) can maintain the system inertia and stable output through the conversion of solar, heat storage and electricity generation, which can alleviate the development bottleneck of high energy curtailment rate that the current renewable energy base faced with. In this context, the combined generation of CSP-wind-photovoltaic will become an important development direction. In this paper, the electric heater is introduced into the CSP plant to realize the reuse of energy curtailment of wind and photovoltaic. On this basis, the operation optimization model of the CSP-wind-photovoltaic combined power generation system considering the energy curtailment and the life of the CSP plant is established. Next, the model is linearized as a mixed integer linear programming problem. Then, case study demonstrates the effectiveness of the proposed model. Results show that the operation mode of the CSP plant varies during a day and the electric heater is of great significance in reducing the energy curtailment.