多能源互补的分布式冷热电联供系统的优化运行研究

发布时间：2018-03-24 23:19

本文选题：分布式冷热电联供系统　切入点：太阳能　出处：《华北电力大学(北京)》2016年硕士论文

【摘要】：近年来随着社会的发展,能源短缺与环境污染的问题日趋严重。在可持续发展战略与低碳经济的大背景下,分布式冷热电联供系统以其能源梯级利用的优点成为了当今世界第二代能源系统发展的重要方向之一,在世界范围内受到广泛的关注。本文设计了一种以太阳能光伏并网发电系统为辅助供能系统的具有多能源互补特点的分布式冷热电联供系统。以提升可再生能源的利用率与提高系统的综合性能为出发点,对冷热电联供系统的系统结构、评价指标、运行模式、容量配置等问题进行了研究。所做的主要工作如下：(1)将太阳能光伏并网发电系统与典型的天然气冷热电联供系统进行集成,研究了集成系统内部能量的传递关系并建立了系统基于能量平衡的静态模型。(2)建立了一次能源节约率、二氧化碳相对减排率与年度化费用降低率的单项评价指标,并据此建立了综合性能评价指标。(3)结合光伏系统输出的变化对分布式冷热电联供系统的运行模式进行分析,并依据建立的综合性能评价指标对系统的运行模式进行优化。(4)通过算例分析将基于优化运行模式的分布式冷热电联供系统的性能与分供系统相比较,研究外部环境变化与光伏系统容量变化对系统性能的影响。
[Abstract]:In recent years, with the development of society, energy shortage and environmental pollution have become a serious problem. In the background of the strategy of sustainable development and low carbon economy, distributed CCHP system with the advantages of energy cascade utilization has become an important direction of development in the world. The second generation energy system, received wide attention in the world. We designed the auxiliary power supply system with multi energy complementary characteristics of distributed combined cooling heating and power cogeneration system based on solar photovoltaic power generation system is a kind of renewable energy. By using the lifting rate and improve the comprehensive performance of the system as a starting point, the system structure, the CCHP system of thermal evaluation index, operation mode capacity allocation, and so on. The main work is as follows: (1) the solar photovoltaic power generation system with typical natural gas CCHP system Integrated transfer relationship of the internal energy integration system and established the system static model based on energy balance. (2) to establish an energy saving rate, carbon dioxide emission reduction rate and relative annual cost reduction rate of the individual evaluation index, and set up a comprehensive evaluation index. (3) analyze the operation according to the change of PV system output mode of cogeneration system for distributed energy, and on the basis of comprehensive performance evaluation index to establish the operation mode of system optimization. (4) performance through numerical analysis will be distributed combined cooling heating and power optimization operation mode based on combined supply system and supply system, study the influence of external environmental change and photovoltaic system capacity on the performance of the system.

【学位授予单位】：华北电力大学(北京)
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TM61;TU83

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