基于TRNSYS的分布式能源系统运行模拟及优化分析

发布时间：2018-01-24 07:11

本文关键词： 分布式能源系统运行模拟优化分析 TRNSYS　出处：《上海电力学院》2017年硕士论文　论文类型：学位论文

【摘要】：分布式能源系统是集节能、经济、环保、可靠等诸多优势于一体的新型供能模式,在我国有着广泛发展前景。如何对分布式能源系统进行运行模拟及其合理有效评价,是发展分布式能源面临的重大问题。本文根据上海市典型年气候参数,结合建筑设计规范及建筑物使用规律,利用e QUEST软件对办公楼、宾馆和住宅三种建筑进行了全年逐时负荷模拟;并针对住宅和办公楼、住宅和宾馆组成的两类混合建筑,分析了其负荷特性。在负荷模拟的基础上,以满足逐时冷热电负荷为边界条件,基于TRNSYS软件,分别建立了分布式能源系统“以热定电”和“以电定热”两种运行模式的模拟框架,针对不同类型建筑进行模拟分析。根据模拟分析结果,可得出以下结论:(1)在现行价格机制和分布式能源“并网上网”运营模式下,针对单一建筑和混合建筑,无论采用“以热定电”还是“以电定热”运行模式,分布式能源系统的经济性、节能性和环境性都要优于热电分供系统;而且“以热定电”模式的经济性、节能性和环境性均优于“以电定热”模式。(2)无论采用“以热定电”还是“以电定热”运行模式,混合建筑分布式能源系统的经济性优势明显;在“以电定热”运行模式下,其节能性有一定优势。(3)在“以热定电”运行模式下,分布式能源系统节能性与热电比成正比,经济性随着上网电价的提高、用气价格的降低而不断提升。以宾馆建筑为例,热电比小于1.13时,才能体现分布式能源系统的节能性;上网电价大于0.46元/k Wh、分布式能源用气价格低于3.21元/m3时,建设和运营分布式能源系统才有现实意义。
[Abstract]:Distributed energy system is a new energy supply mode which integrates many advantages, such as energy saving, economy, environmental protection, reliability and so on. There is a broad development prospect in China. How to simulate the operation of distributed energy system and how to evaluate it reasonably and effectively is an important problem in the development of distributed energy. This paper is based on the typical annual climate parameters of Shanghai. Combined with building design code and building usage rule, the hourly load simulation of office building, guesthouse and residential building is carried out by using e QUEST software. The load characteristics of two kinds of mixed buildings composed of residential building and office building, residential building and guesthouse are analyzed. On the basis of load simulation, the boundary condition is to satisfy the hourly cooling and heating load. Based on the TRNSYS software, the simulation framework of the distributed energy system is established, which is based on the two operation modes of "heating by heating" and "heating by electricity". According to the results of simulation analysis, we can draw the following conclusions: 1) under the current price mechanism and distributed energy "connected to the Internet" operation mode. For single building and mixed building, the economy, energy saving and environmental property of distributed energy system are superior to those of thermal power distribution system, regardless of the operation mode of "heat and electricity fixed" or "electric heating". Moreover, the economy, energy saving and environmental property of the mode of "fixing electricity by heat" are better than that of mode of "fixing electricity by electricity" or "fixing heat by electricity" whether it adopts the operation mode of "fixing electricity by heat" or "fixing heat by electricity". The economic advantages of distributed energy system in hybrid buildings are obvious. Under the operation mode of "fixed heat by electricity", its energy-saving property has a certain advantage. Under the operation mode of "fixing power by heat", the energy saving performance of distributed energy system is directly proportional to the ratio of heat and power, and the economy is increasing with the increase of electricity price on the Internet. Taking hotel buildings as an example, the ratio of heat to power is less than 1.13, which can reflect the energy saving of distributed energy system. Only when the electricity price is greater than 0.46 yuan / k / what and the gas price of distributed energy is less than 3.21 yuan / m3, will it be of practical significance to build and operate the distributed energy system.
【学位授予单位】：上海电力学院
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU85;TK01

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