Aiming at the issues of insufficient carrying capacity,limited flexibility,and weak source-networkload-storage coordination capability in distribution networks under the background of high-proportion new energy integr...Aiming at the issues of insufficient carrying capacity,limited flexibility,and weak source-networkload-storage coordination capability in distribution networks under the background of high-proportion new energy integration.This study proposes a bi-level optimization model for ADN integrating hybrid wind-solar-hydrogenstorage systems.First,an electro-hydrogen coupling system framework is constructed,including models for electrolytic hydrogen production,hydrogen storage,and fuel cells.Meanwhile,typical scenarios of wind-solar joint output are developed using Copula functions to characterize the variability of renewable energy generation.Second,a bi-level optimization model for ADN with electrolytic hydrogen production and storage systems is established:the upper layer employs a multi-objective differential evolution algorithm to solve the optimal siting and sizing problem,aiming to minimize life-cycle costs;the lower layer formulates a coordinated operation optimization model that incorporates contribution degree functions,Voltage Distribution Equilibrium Metric(VDEM),and the renewable energy consumption and absorption rate to ensure real-time synergistic optimization of power flow and voltage stability.Finally,simulations based on the IEEE 33-bus system demonstrate that the proposed method reduces the system's energy curtailment costs by 34.6%and increases the renewable energy accommodation rate to 99.27%.This study verifies the effectiveness of electrolytic hydrogen production and storage systems as flexible loads in enhancing the hosting capacity of distribution networks,significantly improving grid operational flexibility,and source-network-load-storage coordination.These findings provide a technical pathway for the synergistic planning of high-renewable-penetration power systems,highlighting the critical role of electro-hydrogen coupling in balancing economic efficiency and technical reliability in modern ADN.展开更多
基金the Innovation Project for Young Science and Technology Talents in Lanzhou City(2023-QN-121)NationalNatural Science Foundation of China(No.52467008)Key Talent Project of Gansu Provincial Department of Science and Technology(2025RCXM044).
文摘Aiming at the issues of insufficient carrying capacity,limited flexibility,and weak source-networkload-storage coordination capability in distribution networks under the background of high-proportion new energy integration.This study proposes a bi-level optimization model for ADN integrating hybrid wind-solar-hydrogenstorage systems.First,an electro-hydrogen coupling system framework is constructed,including models for electrolytic hydrogen production,hydrogen storage,and fuel cells.Meanwhile,typical scenarios of wind-solar joint output are developed using Copula functions to characterize the variability of renewable energy generation.Second,a bi-level optimization model for ADN with electrolytic hydrogen production and storage systems is established:the upper layer employs a multi-objective differential evolution algorithm to solve the optimal siting and sizing problem,aiming to minimize life-cycle costs;the lower layer formulates a coordinated operation optimization model that incorporates contribution degree functions,Voltage Distribution Equilibrium Metric(VDEM),and the renewable energy consumption and absorption rate to ensure real-time synergistic optimization of power flow and voltage stability.Finally,simulations based on the IEEE 33-bus system demonstrate that the proposed method reduces the system's energy curtailment costs by 34.6%and increases the renewable energy accommodation rate to 99.27%.This study verifies the effectiveness of electrolytic hydrogen production and storage systems as flexible loads in enhancing the hosting capacity of distribution networks,significantly improving grid operational flexibility,and source-network-load-storage coordination.These findings provide a technical pathway for the synergistic planning of high-renewable-penetration power systems,highlighting the critical role of electro-hydrogen coupling in balancing economic efficiency and technical reliability in modern ADN.
