垃圾能源利用与城市多能源系统协同优化模型

The Optimal Model Based on Waste Resourceful and Urban Multi-Energy System Collaborative

随着城市级多能源系统的快速发展和城市垃圾处理设施供能规模的不断扩大,考虑垃圾处理过程的多种能源供能协调优化,并将其与城市多能源系统协同优化进行综合考虑,是提高城市垃圾处理能力和资源化利用水平及综合能源利用效率的重要途径之一。该文将垃圾处理系统等效为一个以垃圾为输入的供能系统,建立城市垃圾能源化利用供能系统(WRESS)、城市多能源系统和城市多源储能系统三者协同优化模型。首先,研究一定时间尺度内可用于供能的城市垃圾产量、最大允许堆存量与其对应的供能种类和供能特性之间的关系,建立垃圾能源化利用供能优化模型;其次,针对垃圾能源化利用可调节特性与多能源系统、多能源储能系统自身协调能力间关系,建立以运行和调节成本最小为目标的城市垃圾能源化利用与多能源系统协同优化模型;最后,以中国某城市实际垃圾处理与多能源运行数据为基础,通过三个场景仿真验证所提模型的有效性。仿真结果表明,该模型在提高城市垃圾处理能力的同时,能够有效降低多能源系统运行成本,并提升系统调节能力。

With the promotion of urban multi-energy system and the expansion of energy supply scale of waste disposal facilities. Considering the coordinated optimization of waste resourceful with urban multi-energy system, which is one of the important ways to improve waste disposal capacity and resource utilization level and the comprehensive energy supply efficiency. The waste disposal system is equivalent to a waste resourceful energy supply system(WRESS) in this paper, and a collaborative optimization model between multi-energy system and multi-energy storage system and waste resourceful energy supply system is established. Firstly, a waste resourceful energy supply model is established by the research of the relationship between the refuse output, the maximum permitted stock, the corresponding energy supply types and characteristics in a certain time scale. Then, in allusion to the relationship between the regulation characteristics of waste resourceful energy and the coordination of multi-energy system and multi-energy storage system, a collaborative optimization model with the lowest total operation and regulation cost of multi-energy system and waste resourceful energy supply system is established. Finally, based on the actual waste disposal and multi energy operation data of a city in China,through three different scenarios of the numerical example to verify the effectiveness of the proposed model.The optimal simulation results show that the model can improve the waste disposal ability, meanwhile it can also reduce the operation cost of multi energy system and enhance the system regulation.