Layered Coordination Control of Grid-Connected Photo‍voltaic System With Hybrid Energy Storage

doi:10.3969/j.issn.1008-0198.2026.02.014

Abstract

Abstract: In order to achieve grid connection of the PV system according to the scheduling plan and configure mixed energy storage to regulate the online electrical energy, a hierarchical coordinated control strategy for the system is proposed based on the division of the battery and supercapacitor SOC areas. firstly, system level regulation makes timely adjustments to the grid connected dispatch power, providing reference values for matching PV and grid connected power for hybrid energy storage systems. Hybrid energy storage regulation allocates smooth power reference values for hybrid energy storage systems to achieve reasonable charge-discharge of batteries and supercapacitors. Then, a mathematical model of inverter is analyzed and control method is designed. finally, the effectiveness and feasibility of the proposed hierarchical coordinated control strategy are verified through system simulation, and the PV system is able to operate stably and grid friendly under different SOC.

Key words: grid-connected PV, hybrid energy storage, layered coordination control, SOC, operational control

CLC Number:

TM615

Li fan, HUANG Kaiming. Layered Coordination Control of Grid-Connected Photo‍voltaic System With Hybrid Energy Storage[J]. Hunan Electric Power, 2026, 46(2): 109-114.

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