Abstract
AbstractIn order to improve the utilization coefficient and reliability of photovoltaic (PV) power generation system and reduce the abandonment of light, the PV power generation system needs to be equipped with a certain capacity of energy storage device, to form a PV-energy storage system. This paper studies the overall coordination control strategy of the PV-energy storage system, of which is connected to the low-voltage distribution network. On the one hand, the energy storage device coordinates the balance between photovoltaic output and load power, and provides stable active power support for low-voltage distribution network. On the other hand, through the reasonable control strategy of the grid-connected inverter, the grid-connected point voltage control of the low-voltage distribution network can be realized, and the voltage quality of the distribution network of the optical storage system can be improved. Finally, the effectiveness of the proposed optical-storage-inverse coordination control strategy is verified by simulation.KeywordsPV-energy storage systemDistribution power systemCoordinated controlLocal voltage control
Published Version
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