中文摘要：

为了对比分析不同运行调度模式对微网经济运行的影响，在考虑微源同时提供有功和无功功率的基础上．提出了计及制热收益的热电联产型微网系统经济运行优化模型。以一个包含风、光、储、微型燃气轮机、燃料电池以及热电负荷的具体微网为例．提出了不同运行调度模式下的经济调度策略，运用改进遗传算法优化了考虑实时电价的并网运行方式下各微源的有功和无功出力。并对比分析了微网与外网交互功率的约束以及不同运行调度模式对经济调度的影响。仿真结果表明微网可与外网自由双向交换功率的模式更具有经济优势．验证了所提模型、策略和算法的有效性．

英文摘要：

To analyze the impact of dispatch mode on microgrid economic operation,an optimization model of economic operation considering heating income is presented for CHP microgrid system providing both active and reactive powers. An economic dispatch strategy is presented for a typical microgrid consisting of wind turbine,photovoltaic generation,storage battery,micro gas-turbine,fuel cell,heating load and electric load under different dispatch modes. The improved genetic algorithm is used to optimize the active and reactive outputs of micro sources in grid-connection mode considering the spot price. The constraint of power exchange between microgrid and external power network is studied and the impact of dispatch mode on microgrid economic dispatch is analyzed. Simulative results show that,the dispatch mode which allows the free power exchange between microgrid and external power network is more economical. The validity of the proposed model,dispatch strategy and algorithm is proved.