Control strategy The purpose of the control strategy proposed in this paper is to satisfy the stable operation of the system by controlling the action model of the photovoltaic and energy storage systems. The control strategy can allocate the operation modes of photovoltaic system and energy storage system according to the actual situation.
Establish a capacity optimization configuration model of the PV energy storage system. Design the control strategy of the energy storage system, including timing judgment and operation mode selection. The characteristics and economics of various PV panels and energy storage batteries are compared.
Regarding the control strategy of the photovoltaic and energy storage hybrid system, the existing researches are mainly aimed at the control of the energy storage system, and the factors considered mainly include extending the life of the energy storage and reducing the system cost.
Battery energy storage is the important component in the off-grid solar PV system. Due to load and PV output variations, battery energy storage is going to have frequent charging and discharging. So the type of battery used in a PV system is not the same as in an automobile application.
Specifically, the energy storage power is 11.18 kW, the energy storage capacity is 13.01 kWh, the installed photovoltaic power is 2789.3 kW, the annual photovoltaic power generation hours are 2552.3 h, and the daily electricity purchase cost of the PV-storage combined system is 11.77 $. 3.3.2. Analysis of the influence of income type on economy
According to the capacity configuration model in Section 2.2, Photovoltaic penetration and the energy storage configuration are nonlinear. Considering the charging power and other effects, if you use mathematical methods such as enumeration, the calculation is complicated and the efficiency is extremely low.
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