工厂是供能结构复杂的典型能源系统,生产过程中存在多能流耦合,优化空间大,是多能源系统的重点发展区域.同时,工厂中含大量的能源设备,各种能源设备的全生命周期成本会对工厂的用能策略产生较大影响.为此,文章针对同时考虑光伏、风机、储能、冰蓄冷空调、中央空调等多种能源设备的工厂多能微网模型,提出了一种考虑设备全生命周期成本的工厂多能微网经济调度策略.在考虑设备全生命周期成本的基础上,以工厂整体的运行费用最低为目标,建立工厂日前经济优化调度模型,并采用混合整数线性规划方法进行求解.算例结果表明,所提的优化策略使得多种能源进行协同互补,减小了能源转换和存储时的能量损耗,提升了能源利用效率.同时,在价格信号的激励下,充分发挥了需求侧设备的调节潜力,促进了可再生能源的消纳和电网的削峰填谷,并优化了能源消费结构.由于将设备的全生命周期成本考虑在内,在工程实际中具有更好的推广价值.%Plant is a typical energy system with complex energy supply structure,there are many energy flow coupling in production process,and the optimization space is large,which is the key development area of multi-energy system.Meanwhile,there are a large number of energy equipments in plant,whose life cycle cost has a great impact on the energy strategy of plant.Therefore,aiming at the multi-energy microgrid model of the plant with considering photovoltaic,wind,energy storage,ice storage,central air-conditioning and other energy equipment,this paper presents a plant economy scheduling strategy considering full life cycle cost of equipment.With considering the whole life cycle cost of equipment,we construct a day-ahead economic dispatch model of plant with the lowest plant operating costs as the goal,and use the mixed integer linear programming method to solve the model.Numerical results show that the proposed optimization strategy enables multiple energy sources to complement each other,reduces energy consumption during energy conversion and storage and improves energy utilization efficiency.Meanwhile,under the stimulation of the price signal,the adjustment potential of the demand side equipment has been fully brought into play;renewable energy consumption and power grid peak are promoted;energy consumption structure has been optimized.Because the total life cycle cost of the equipment is considered,it has better generalization value in engineering practice.
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