Abstract
Integrating solar power into the power grid is significant for the rapid acceleration of energy transition. As a result, it is urgent to make appropriate operational strategies for grid-connected photovoltaic battery systems (GCPBS). At present, a variety of energy management strategies have been proposed, while the influence of battery degradation and energy flow distribution hasn’t been considered, which also makes a huge difference to grid-connected photovoltaic-battery system operation. Therefore, a novel energy management strategy is proposed in this paper to provide optimal energy utilization. Moreover, a case study using data from California is utilized to investigate the performance of the proposed method, where a widely used operation strategy is utilized to be compared. Results prove that the proposed method can control flexibly energy flow to achieve the minimum cost of GCPBS operation with reasonable battery charging and discharging process, and the battery is charged at tough prices and discharged at high prices, where coupling effects of all hours and price are considered and the battery is fully utilized.
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