By collecting and organizing historical data and typical model characteristics,hydrogen energy storage system(HESS)-based power-to-gas(P2G)and gas-to-power systems are developed using Simulink.The energy transfer mech...By collecting and organizing historical data and typical model characteristics,hydrogen energy storage system(HESS)-based power-to-gas(P2G)and gas-to-power systems are developed using Simulink.The energy transfer mechanisms and numerical modeling methods of the proposed systems are studied in detail.The proposed integrated HESS model covers the following system components:alkaline electrolyzer(AE),highpressure hydrogen storage tank with compressor(CM&H_(2) tank),and proton-exchange membrane fuel cell(PEMFC)stack.The unit models in the HESS are established based on typical U-I curves and equivalent circuit models,which are used to analyze the operating characteristics and charging/discharging behaviors of a typical AE,an ideal CM&H_(2) tank,and a PEMFC stack.The validities of these models are simulated and verified in the MicroGrid system,which is equipped with a wind power generation system,a photovoltaic power generation system,and an auxiliary battery energy storage system(BESS)unit.Simulation results in MATLAB/Simulink show that electrolyzer stack,fuel cell stack and system integration model can operate in different cases.By testing the simulation results of the HESS under different working conditions,the hydrogen production flow,stack voltage,state of charge(SOC)of the BESS,state of hydrogen pressure(SOHP)of the HESS,and HESS energy flow paths are analyzed.The simulation results are consistent with expectations,showing that the integrated HESS model can effectively absorb wind and photovoltaic power.As the wind and photovoltaic power generations increase,the HESS current increases,thereby increasing the amount of hydrogen production to absorb the surplus power.The results show that the HESS responds faster than the traditional BESS in the microgrid,providing a solid theoretical foundation for later wind-photovoltaic-HESS-BESS integration.展开更多
氢电混动汽车(fuel-cell hybrid electric vehicles,FCHEV)的出现克服了电动汽车充电缓慢、续航焦虑的问题,而且其灵活多样的用能方式有利于缓解电力系统调峰压力,能够促进能源–交通系统深度融合与绿色低碳转型,助力我国早日达成“30&#...氢电混动汽车(fuel-cell hybrid electric vehicles,FCHEV)的出现克服了电动汽车充电缓慢、续航焦虑的问题,而且其灵活多样的用能方式有利于缓解电力系统调峰压力,能够促进能源–交通系统深度融合与绿色低碳转型,助力我国早日达成“30×60双碳目标”。该文建立了FCHEV等效里程模型,将里程作为衡量其充电加氢状态的指标;并建立了考虑电碳耦合的能源交通融合系统优化调度模型,使得机组运行成本和环境成本最低。基于我国某省实际数据分析了电-碳市场下FCHEV的接入对提高电力系统灵活性和推动碳减排的积极作用,挖掘了氢电混动载运技术创造的产业价值,研究了大力发展新能源对碳减排的积极影响,并根据研究结果提出了促进碳市场环境下能源–交通系统发展的建议。展开更多
基金supported by the State Grid Jiangxi Electric Power Co.,Ltd.(No.52182020008K)Beijing Millions of Talents Funding Project(No.2020A30).
文摘By collecting and organizing historical data and typical model characteristics,hydrogen energy storage system(HESS)-based power-to-gas(P2G)and gas-to-power systems are developed using Simulink.The energy transfer mechanisms and numerical modeling methods of the proposed systems are studied in detail.The proposed integrated HESS model covers the following system components:alkaline electrolyzer(AE),highpressure hydrogen storage tank with compressor(CM&H_(2) tank),and proton-exchange membrane fuel cell(PEMFC)stack.The unit models in the HESS are established based on typical U-I curves and equivalent circuit models,which are used to analyze the operating characteristics and charging/discharging behaviors of a typical AE,an ideal CM&H_(2) tank,and a PEMFC stack.The validities of these models are simulated and verified in the MicroGrid system,which is equipped with a wind power generation system,a photovoltaic power generation system,and an auxiliary battery energy storage system(BESS)unit.Simulation results in MATLAB/Simulink show that electrolyzer stack,fuel cell stack and system integration model can operate in different cases.By testing the simulation results of the HESS under different working conditions,the hydrogen production flow,stack voltage,state of charge(SOC)of the BESS,state of hydrogen pressure(SOHP)of the HESS,and HESS energy flow paths are analyzed.The simulation results are consistent with expectations,showing that the integrated HESS model can effectively absorb wind and photovoltaic power.As the wind and photovoltaic power generations increase,the HESS current increases,thereby increasing the amount of hydrogen production to absorb the surplus power.The results show that the HESS responds faster than the traditional BESS in the microgrid,providing a solid theoretical foundation for later wind-photovoltaic-HESS-BESS integration.
文摘氢电混动汽车(fuel-cell hybrid electric vehicles,FCHEV)的出现克服了电动汽车充电缓慢、续航焦虑的问题,而且其灵活多样的用能方式有利于缓解电力系统调峰压力,能够促进能源–交通系统深度融合与绿色低碳转型,助力我国早日达成“30×60双碳目标”。该文建立了FCHEV等效里程模型,将里程作为衡量其充电加氢状态的指标;并建立了考虑电碳耦合的能源交通融合系统优化调度模型,使得机组运行成本和环境成本最低。基于我国某省实际数据分析了电-碳市场下FCHEV的接入对提高电力系统灵活性和推动碳减排的积极作用,挖掘了氢电混动载运技术创造的产业价值,研究了大力发展新能源对碳减排的积极影响,并根据研究结果提出了促进碳市场环境下能源–交通系统发展的建议。
