含CCHP的微网经济运行优化研究

发布时间：2018-02-26 12:36

本文关键词： CCHP 微网经济运行容量配置优化　出处：《华南理工大学》2014年硕士论文　论文类型：学位论文

【摘要】：冷热电联产系统（简称CCHP）具有能源利用效率高，保护环境，节约能源、减少排放等优点，可满足用户冷热电多种形式能源需求的特点。随着智能电网技术的应用推广，微网为新能源的接入提供了有效的承载，微网技术为分布式CCHP提供了灵活的运行平台，可以实现冷热电负荷之间灵活匹配，提高整体系统的经济和社会效益。微网的运行优化是微网运行管理的重要内容，它直接影响了微网运行的经济性、可靠性和对可再生能源的利用率。本文针对CCHP、微网的系统结构以及运行优化等开展了下述研究工作。（1）本文首先总结了国内外关于微网以及CCHP的发展及研究现状，对国内外CCHP系统和微网的优化研究进行全面的总结。通过分析研究微网的供能结构的基础上，，建立了风力发电机、光伏电池、微型燃气轮机、蓄电池以及余热处理装置等数学模型。（2）针对基于微型燃气轮机的CCHP系统，建立了以成本最小为目标的经济优化模型，在算例中分析了冷热电负荷比例、燃料价格、剩余电力上网政策、电价等对系统经济性的影响。结果表明CCHP系统的经济节能效果好，并发现合理的电价、燃料价格、热电负荷比以及上网政策是提高CCHP系统经济性的有效手段之一。（3）针对包含CCHP的微网系统提出了含CCHP的微网系统的经济运行优化模型，研究了发电能耗成本、运行维护成本、折旧成本、启停成本、联网成本以及环境治理成本最小下各个机组单元出力，采用以遗传优化算法为求解算法，通过算例仿真探讨了夏季、冬季、春秋三种季节典型负荷下，含CCHP的微网系统的运行优化结果，仿真结果验证了所提出的模型的合理性，以及含CCHP的微网系统的高效经济、环保性能。（4）针对CCHP系统的容量配置优化问题提出了CCHP系统容量配置优化模型，并通过算例介绍了CCHP系统的容量配置方法，并同时对CCHP系统的投资决策进行了简单地财务分析。最后探讨了CCHP系统发展的制约发展因素以及建议。为未来CCHP系统的发展提供更多的支持。
[Abstract]:CCHPs have the advantages of high energy utilization efficiency, environmental protection, energy saving and emission reduction, and can meet the needs of users in various forms of energy demand. With the application of smart grid technology, Microgrid provides an effective load bearing for new energy access, and microgrid technology provides a flexible operating platform for distributed CCHP, which can realize flexible matching between thermal and cold loads. To improve the economic and social benefits of the whole system, the operation optimization of microgrid is an important part of microgrid operation management, which directly affects the economy, reliability and utilization of renewable energy of microgrid operation. In this paper, the following research work is carried out on CCHP, microgrid system structure and operation optimization. Firstly, this paper summarizes the development and research status of microgrid and CCHP at home and abroad, and summarizes the optimization research of CCHP system and microgrid at home and abroad. Based on the analysis and study of the energy supply structure of microgrid, the wind turbine is established. Photovoltaic cells, micro gas turbines, batteries and waste heat treatment devices and other mathematical models. In view of the CCHP system based on micro gas turbine, an economic optimization model with the aim of minimum cost is established, and the cooling and heating load ratio, fuel price and residual power network policy are analyzed in an example. The results show that the CCHP system has a good economic and energy saving effect, and it is found that reasonable electricity price, fuel price, thermoelectric load ratio and access policy are one of the effective means to improve the economy of CCHP system. In this paper, the economic operation optimization model of microgrid system with CCHP is proposed for the microgrid system including CCHP. The energy cost, maintenance cost, depreciation cost, start and stop cost of power generation are studied. Taking genetic optimization algorithm as the solution algorithm, the paper discusses the typical load in summer, winter, spring and autumn through example simulation under the minimum network cost and environmental control cost. The simulation results show the rationality of the proposed model and the high efficiency, economy and environmental protection performance of the microgrid system with CCHP. 4) aiming at the problem of capacity configuration optimization of CCHP system, an optimization model of CCHP system capacity configuration is put forward, and the method of capacity configuration of CCHP system is introduced by an example. At the same time, the paper makes a simple financial analysis on the investment decision of CCHP system. Finally, it discusses the restricting factors and suggestions of the development of CCHP system, and provides more support for the development of CCHP system in the future.
【学位授予单位】：华南理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM732

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