含电热联合系统的微电网运行优化

Optimization on Microgrid With Combined Heat and Power System

在当前能源互联网迅速发展及电热联系日渐紧密的环境下,提出基于电热联合调度的区域并网型微电网运行优化模型。综合网内储能特性、分时电价、电热负荷与分布式电源的时序特征,以包含风机、光伏电池、热电联产系统、电锅炉、燃料电池和储能系统的并网型微电网为例,采用Cplex优化软件求得调度周期内各微电源最佳出力及总运行成本,并与两种常见电热调度方式进行比较。仿真算例表明:联合调度模型能实现电热统一协调调度并降低微电网运行成本。该模型可为电热之间能源互联及规划运营提供参考。

Along with the rapid development of energy internet and the closer relationship between power and heat,this paper proposed the combined heat and power dispatch model for regional grid-connected microgrid. Taking into consideration energy storage,time-of-use（TOU） electricity price and timing sequence characteristics of different types of load and distributed generators,a microgrid consisting of a wind turbine,a photovoltaic,a combined heat and power system,an electric boiler,a fuel cell and an energy storage system was selected. The optimization method based on the Cplex software was employed to obtain the optimal costs and operation modes of the microsources in the scheduling period,and then compared the model with two traditional methods of scheduling. The simulation results indicat that the proposed model could balance the power and heat output and decrease the operation costs. This model can serve as references for the development of energy internet and power and heat scheduling.