热电联供型微网经济负荷分配研究

Combined Heat and Power Economic Dispatch of Micro-Grids in Isolated Mode

针对孤岛运行模式下的微网经济运行问题,本文对基于孤岛运行模式的热电联供型微网经济负荷分配问题进行研究,并在孤岛运行模式下,建立了含有微电源、储能装置和热电负荷的微网系统经济负荷分配数学模型,采用改进粒子群优化算法对模型进行求解,优化各微源的出力。仿真结果表明,与基本的粒子群方法相比较,采用改进的粒子群方法可以节省发电成本665.01美元,节省环境成本29.79美元,总共节省694.8美元。该算法能有效减少微网系统的综合成本,为工程实际应用提供了理论基础。

In order to solve the economic operation of the micro-grids in isolated mode,this paper studies the economical dispatch of the micro-grids which combined heat and power（CHP） in the isolated mode.A model of economic operated CHP micro-grids system which consists of micro-power,energy storage,heating and electric loads is established.An improved particle swarm optimization（PSO） algorithm is applied to obtain the optimal output of each micro-source for the model.Simulation results show that,compared with the basic PSO,the total cost used improved PSO could be reduced by $ 694.8 including generation cost of $ 665.01 and environment cost of $ 29.79.The cost of micro-grid system could be reduced with this method,and it provides a theoretical basis for the practical application of engineering.