摘要
微电网多目标优化控制问题通常采用非线性高维微分方程组描述,难以用现有数学方法求得满意解.为了解决该问题,提出基于混成控制理论的求解方法,建立一个Stateflow模型,根据输入数据、运行状态控制目标做出判断,调度微网中各微电源,实现微电网安全、稳定、经济运行的多目标趋优控制.针对一个具体直流微电网,论述了各微电源的调度运行策略,给出了相关事件的定义,设计了其事件驱动控制系统,并在MATLAB/Simulink/Stateflow环境下进行了仿真.仿真结果表明该模型能够根据给定数值的燃料电池运行成本、蓄电池端电压、功率缺额输出符合理论分析的控制信号.
The multi-objective optimal control problem of micro-grid is usually described by high dimensional nonlinear differential equations,which cannot be solved satisfactorily by current mathematics method.Hybrid control method is proposed to achieve multi-objective optimal control of micro-grid.A Stateflow model was estabilished,which can output control quantity according to the input data and the control objects,schedule various micro power supply in the micro-grid and achieve the multi-objective optimal control of the micro-grid.In a case of a specific DC micro-grid,the dispatching strategy of micro sources in the micro-grid was discussed,the related events were defined and the event-driven control system was designed.Finally,simulation by MATLAB/Simulink/Stateflow shows that with given values of fuel cell operation cost,battery voltage and power shortage,this model can output control signals in agreement with theoretical analysis.
出处
《西南交通大学学报》
EI
CSCD
北大核心
2013年第5期885-891,共7页
Journal of Southwest Jiaotong University
基金
国家自然科学基金资助项目(51177138)
四川省科技计划项目(国际合作计划)(2012HH0007)
关键词
混成系统
微电网
趋优控制
光伏电池
燃料电池
hybrid systems
micro-grid
optimal control
photoelectrical cells
fuel cells
