WANG Jingyue,ZHU Di,LIU Chuang,et al.Topology and Control Strategy of Soft Open Point Integrated with Photovoltaic and Energy Storage for Medium-voltage Grid Connection[J].Automation of Electric Power Systems,2026,50(1):51-60.
WANG Jingyue,ZHU Di,LIU Chuang,et al.Topology and Control Strategy of Soft Open Point Integrated with Photovoltaic and Energy Storage for Medium-voltage Grid Connection[J].Automation of Electric Power Systems,2026,50(1):51-60. DOI: 10.7500/AEPS20241225001.
Topology and Control Strategy of Soft Open Point Integrated with Photovoltaic and Energy Storage for Medium-voltage Grid Connection
Aiming at the flexible interconnection among renewable energy grid-connected nodes in medium-voltage distribution networks
a soft open point (SOP) integrated with photovoltaic and energy storage for medium-voltage grid connection is proposed. This SOP has the capability to efficiently aggregate photovoltaic and energy storage resources and to improve the uneven distribution of power flow in distribution networks. Firstly
the topological structure of the photovoltaic-battery-hybrid cascaded SOP (PVBH-SOP) is proposed and the topology and modulation strategy of its single-stage isolated cascaded sub-modules are presented. Secondly
an average circuit model of the PVBH-SOP is established to analyze the control principle of its power flow. Then
three operation modes of the PVBH-SOP are described
along with their corresponding control strategies. Finally
a 10 kV/2 MW simulation platform for the PVBH-SOP system is established in MATLAB/Simulink to verify the effectiveness of the proposed PVBH-SOP topology and control strategy.
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