文章以含有蓄电池、光伏、风机以及负荷的微电网为研究对象，在考虑蓄电池充放电约束、微电网与电网功率交换约束等条件下，建立了以负荷平均供电单价最小为目标的日前优化调度模型。并利用改进交叉算子的遗传算法进行求解。以某典型微电网为例进行建模与求解，得到了微电网日前优化调度方案，实现了微电网的经济稳定运行(Taking the micro-grid with storage battery, photovoltaic, fan and load as the research object, considering the battery charging and discharging constraints, power exchange constraints between micro-grid and power grid, a daily optimal dispatching model with the objective of minimizing the average unit price of power supply is established. The improved crossover operator is used to solve the genetic algorithm. Taking a typical micro-grid as an example, the day-ahead optimal dispatching scheme of micro-grid is obtained, and the economic and stable operation of micro-grid is realized.)