Grid-Connected/Islanded Switching Control Strategy for Photovoltaic Storage Hybrid Inverters Based on Modified Chimpanzee Optimization Algorithm  

作　　者：Chao Zhou Narisu Wang Fuyin Ni Wenchao Zhang 

机构地区：[1]School of Electrical and Information Engineering,Jiangsu University of Technology,Changzhou,213001,China [2]Jiangsu Key Laboratory of Power Transmission&Distribution Equipment Technology,Jiangsu University of Technology,Changzhou,213001,China

出　　处：《Energy Engineering》2025年第1期265-284,共20页能源工程（英文）

基　　金：received funding from the Postgraduate Research&Practice Innovation Program of Jiangsu Province(SJCX23_1633);2023 University Student Innovation and Entrepreneurship Training Program(202311463009Z);Changzhou Science and Technology Support Project(CE20235045);Open Project of Jiangsu Key Laboratory of Power Transmission&Distribution Equipment Technology(2021JSSPD12).

摘　　要：Uneven power distribution,transient voltage,and frequency deviations are observed in the photovoltaic storage hybrid inverter during the switching between grid-connected and island modes.In response to these issues,this paper proposes a grid-connected/island switching control strategy for photovoltaic storage hybrid inverters based on the modified chimpanzee optimization algorithm.The proposed strategy incorporates coupling compensation and power differentiation elements based on the traditional droop control.Then,it combines the angular frequency and voltage amplitude adjustments provided by the phase-locked loop-free pre-synchronization control strategy.Precise pre-synchronization is achieved by regulating the virtual current to zero and aligning the photovoltaic storage hybrid inverter with the grid voltage.Additionally,two novel operators,learning and emotional behaviors are introduced to enhance the optimization precision of the chimpanzee algorithm.These operators ensure high-precision and high-reliability optimization of the droop control parameters for photovoltaic storage hybrid inverters.A Simulink model was constructed for simulation analysis,which validated the optimized control strategy’s ability to evenly distribute power under load transients.This strategy effectively mitigated transient voltage and current surges during mode transitions.Consequently,seamless and efficient switching between gridconnected and island modes was achieved for the photovoltaic storage hybrid inverter.The enhanced energy utilization efficiency,in turn,offers robust technical support for grid stability.

关 键 词：Photovoltaic storage hybrid inverters modified chimpanzee optimization algorithm droop control seamless switching 

分 类 号：TM615[电气工程—电力系统及自动化]