别墅群冷热电三联供系统配置与性能评价的研究

发布时间：2018-06-13 15:32

本文选题：别墅群 + 冷热电三联供　；参考：《华中科技大学》2013年硕士论文

【摘要】：能源供应日益紧张的今天，提高能源利用率是人们非常关注的问题，冷热电三联供是当前一种发展前景很好的技术，本文对别墅群采用冷热电三联供系统进行了探讨。试图分析别墅群规模对冷热电三联供系统性能的影响，找出适合别墅群采用三联供系统的临界规模。冷热电三联供系统组成很复杂，配置形式多样。根据别墅群内用户特点和能量“梯级利用原则”选择三联供的配置形式。以满足别墅群内用户全部冷热负荷和部分电负荷为目的。本课题对比了两种不同的配置形式，最终确定了内燃机与烟气直燃机的组合形式。然后利用模拟得到别墅群的冷热逐时负荷和常规的计算方法得到的电负荷和生活热水负荷，为三联供系统设备选型。通过对确定配置形式的三联供系统的节能性和经济性分析，，得到了别墅群适合采用三联供系统的规模下限。然后再对发电效率、市电价格、天然气价格等参数进行分析，得出使本课题别墅群三联供系统节能、经济运行的参数范围。对参数进行敏感分析时发现，市电价格对别墅群三联供系统经济性的影响尤为显著。三联供系统年运行时间对系统经济性也有较大的影响，分析年运行时间对三联供系统影响能为运行优化提供依据。三联供系统在保证能源供应稳定性方面具有良好的效果，三联供系统不仅能减少电网在用电高峰时的压力，还能在电力供应出现故障时充当应急能源的作用。本课题的研究方法和成果可以推广到类似用户的三联供系统，为规划设计阶段提供帮助。
[Abstract]:Nowadays, when energy supply is increasingly tight, people pay close attention to improving energy utilization efficiency, and cold, heat and electricity triple power supply is a promising technology at present. This paper discusses the use of cold, heat and electricity triple power supply system in villa group. This paper attempts to analyze the influence of villa group size on the performance of the system, and to find out the critical scale suitable for the villa group to adopt the triple power supply system. The composition of the system is very complex and the configuration is various. According to the characteristics of the users in the villa group and the "cascade utilization principle" of energy, the configuration form of triple supply is selected. In order to meet the villa group all the cold and hot load and part of the electricity load for the purpose. In this paper, two different configurations are compared, and the combination of internal combustion engine and flue gas direct gas turbine is determined. Then, the electricity load and domestic hot water load of villa group are obtained by simulation, which are used to select the equipment of the triple supply system. Based on the analysis of energy saving and economy of the triple supply system with fixed configuration form, the lower limit of the scale of the villa group suitable for the use of the triple supply system is obtained. Then the parameters such as power generation efficiency, electricity price, natural gas price and so on are analyzed, and the parameter range of energy saving and economic operation of the triple supply system of this subject villa group is obtained. The sensitivity analysis of the parameters shows that the effect of the price of electricity on the economy of the triple supply system of the villa group is particularly significant. The annual operation time of the triple-supply system also has a great influence on the system economy, and the analysis of the influence of the annual running time on the triple-supply system can provide the basis for the operation optimization. Triple supply system has a good effect in ensuring the stability of energy supply. It can not only reduce the pressure of power supply peak, but also act as an emergency energy in the event of power supply failure. The research methods and results of this paper can be extended to the similar user-like triple supply system, which can be helpful to the planning and design stage.
【学位授予单位】：华中科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU8

【参考文献】