面向用户冷、热、电负荷需求的多能源系统耦合运行优化策略

Multi-energy System Coupling Operation Optimization Strategy Considering User-oriented Load Demand of Cooling,Heating and Power

建立了由风能和太阳能作为驱动能源的冷热电联产多能互补系统(DCERs CCHP),包含发电、冷热电联产(CCHP)和辅助供热三个子系统,将该系统与以天然气作为驱动能源的冷热电联产系统(NG CCHP)相对比,建立了能源绩效、环境绩效和经济绩效三个维度评估体系,并以能效最高、成本最小和环境效益最大为目标,构建调度策略优化模型,进行实例仿真。结果表明,与传统的NG CCHP相比,DCERs CCHP具有更好的能源绩效、经济绩效和环境绩效;与其他单目标优化模式相比,综合优化模式下的系统运行效果最佳;NG占比增加将降低项目盈利能力,风电、光伏设备成本降低将提升项目的盈利能力。

This paper established a multi-energy complementary system driven by distributed clean energy resources(DCERs CCHP).This system consists of three sub-systems,which are power generation subsystem,combined cooling heating and power subsystem(CCHP)and auxiliary heating subsystem.A CCHP driven by natural gas(NG CCHP)was selected as the comparison object.Three dimension evaluation systems were established,which are energy performance,environmental performance and economic performance,and the scheduling optimization model was constructed with the goal of energy efficiency,minimum cost and maximum environmental benefit.Compared with the traditional NG CCHP,the simulation results show that the DCERs CCHP has better energy performance,economic performance and environmental performance;Compared with other single-objective optimization models,the system has better operation effect under the integrated optimization mode;The increase of the proportion of NG will reduce the profitability of the project,and the reduction of the cost of wind power and photovoltaic equipment will increase the profitability of the project.