风氢耦合系统能量管理策略研究
ENERGY MANAGEMENT STRATEGY OF WIND POWER COUPLED WITH HYDROGEN SYSTEM
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摘要: 针对风力机出力的波动性和并网弃风问题,采用风力机/电解槽/燃料电池/超级电容的风氢耦合发电系统及其能量管理控制策略。针对风氢耦合发电系统的12种运行模式,提出一种能量管理控制策略,确保在各个控制单元的作用下,能量协调流动于各个子单元间。能量管理控制策略不仅使风氢耦合发电系统出力可控,而且平抑了直流母线电压波动,平滑了上网功率。通过Matlab/Simulink软件进行仿真研究,验证了风氢耦合发电系统的能量管理控制策略的有效性,提高了风电消纳能力。Abstract: Aiming at the problem of wind power generation caused by wind power fluctuation and curtailment,the wind-hydrogen coupling system with the energy management system consisting of wind driven generator,electrolytic cells,fuel cells and supercapacitor is adopted to improve the quality of wind power. Based on the 12 operation modes of the wind-hydrogen coupling system,a kind of energy management is proposed to coordinate the flow of energy between the sub-units of hybrid system under control units. Not only does the management make controllable power out of wind-hydrogen coupling system,but also stabilize the DC bus voltage fluctuation and smooth the integration of wind power. The results of Matlab/Simulink verify the effectiveness of the cooperative control strategy of wind-hydrogen coupling system,and improve the capacity of wind power utilization.