Battery sizing and rule-based operation of grid-connected photovoltaic-battery system: A case study in Sweden. (1st February 2017)

• Record Type: Journal Article
• Authors: Zhang, Yang; Lundblad, Anders; Campana, Pietro Elia; Benavente, F.; Yan, Jinyue
• Is Part Of: Energy conversion and management. Volume 133(2017)
• Page Start: 249
• Page End: 263
• Publication Date: 2017-02-01
• Subjects: Photovoltaic -- Battery -- Operation strategy -- Optimization -- Genetic algorithm; Direct energy conversion -- Periodicals; Energy storage -- Periodicals; Energy transfer -- Periodicals; Énergie -- Conversion directe -- Périodiques; Direct energy conversion; Periodicals; 621.3105
• DOI: 10.1016/j.enconman.2016.11.060
• Languages: English
• ISSNs: 0196-8904

Abstract

Highlights: Battery sizing and rule-based operation are achieved concurrently. Hybrid operation strategy that combines different strategies is proposed. Three operation strategies are compared through multi-objective optimization. High Net Present Value and Self Sufficiency Ratio are achieved at the same time. Abstract: The optimal components design for grid-connected photovoltaic-battery systems should be determined with consideration of system operation. This study proposes a method to simultaneously optimize the battery capacity and rule-based operation strategy. The investigated photovoltaic-battery system is modeled using single diode photovoltaic model and Improved Shepherd battery model. Three rule-based operation strategies—including the conventional operation strategy, the dynamic price load shifting strategy, and the hybrid operation strategy—are designed and evaluated. The rule-based operation strategies introduce different operation parameters to run the system operation. multi-objective Genetic Algorithm is employed to optimize the decisional variables, including battery capacity and operation parameters, towards maximizing the system's Self Sufficiency Ratio and Net Present Value. The results indicate that employing battery with the conventional operation strategy is not profitable, although it increases Self Sufficiency Ratio. The dynamic price load shifting strategy has similar performance with the conventional operation strategy because the electricity price variation is not large enough. The proposed hybrid operation strategy outperforms other investigated strategies. When the battery capacity is lower than 72 kW h, Self Sufficiency Ratio and Net Present Value increase simultaneously with the battery capacity.