电力系统自动化2024，Vol.48Issue(13)：19-29,11.DOI:10.7500/AEPS20240108007
考虑制氢效率优化的氢-储-风直流微网功率协调控制
Power Coordinated Control for DC Microgrid with Hydrogen-Storage-Wind Power Considering Hydrogen Production Efficiency Optimization
摘要
Abstract
Hydrogen production from renewable energy,such as wind power,is an effective technical means to improve the accommodation capability for renewable energy.A power coordinated control method for DC microgrid with hydrogen-storage-wind power considering optimized operation requirements of hydrogen production efficiency is proposed,which can adapt to the wind power and load power fluctuations and ensure the efficient operation of the hydrogen production electrolyzer.According to the optimized operation area of the hydrogen production electrolyzer and the range of DC bus voltage fluctuations,the DC microgrid is divided into normal operation modes(i.e.,optimized operation of hydrogen production electrolyzer)and extreme operation modes(i.e.,non-optimized operation of hydrogen production electrolyzer).In the normal operation modes,the operation point of the electrolyzer is maintained within the optimized operation area through the self-adaptive droop control of the electrolyzer and the variable coefficient droop control with a virtual capacitor of the battery energy storage to ensure the efficient and safe operation of the electrolyzer.In the extreme operation modes,the voltage safety of the DC microgrid is assured through flexible switching control strategies of hydrogen and storage.The proposed coordinated control method can not only rapidly suppress the DC bus voltage fluctuations caused by the wind power and load power fluctuations,but also maintain the hydrogen production efficiency at a high level.Finally,the effectiveness and superiority of the proposed method are verified through simulation cases of PSCAD/EMTDC.关键词
风电/制氢/直流微网/优化运行区间/效率优化/功率协调控制Key words
wind power/hydrogen production/DC microgrid/optimized operation area/efficiency optimization/power coordinated control引用本文复制引用
尹德强,姚良忠,程帆,徐箭,吴鸣,翟冬阳..考虑制氢效率优化的氢-储-风直流微网功率协调控制[J].电力系统自动化,2024,48(13):19-29,11.基金项目
国家自然科学基金委员会-国家电网公司智能电网联合基金资助项目(U2166206). This work is supported by National Natural Science Foundation of China-State Grid Joint Fund for Smart Grid(No.U2166206). （U2166206）
