本文選題：分布式能源系統(tǒng)　切入點：動態(tài)負荷　出處：《太原理工大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：分布式能源系統(tǒng)在解決能源危機以及環(huán)境問題上有著突出的貢獻。由于分布式能源是以能量梯級利用為設(shè)計準則的,因此分布式能源系統(tǒng)能夠充分利用一次能源。隨著全球經(jīng)濟社會的不斷發(fā)展,分布式能源系統(tǒng)的研究也必將越來越受重視。但是由于系統(tǒng)冷、熱、電出力與用戶側(cè)冷、熱、電負荷需求在匹配上仍存在著問題,因此有時設(shè)計出來的分布式能源系統(tǒng)的經(jīng)濟效益達不到預(yù)期的效果。這一問題的存在使得許多投資者望而止步,并嚴重影響到分布式能源系統(tǒng)的發(fā)展及普及。另一方面,分布式能源系統(tǒng)配置方案多樣。在幾種配置方案都能夠滿足負荷需求時,哪種配置方案更加地經(jīng)濟性也同樣困擾著投資者。本文就是針對這些問題展開研究的：在負荷匹配問題上,本文將選擇蓄能裝置作為系統(tǒng)負荷匹配的調(diào)節(jié)手段,并對帶蓄能裝置聯(lián)供系統(tǒng)的運行策略進行優(yōu)化研究；在方案的選擇上,本文將對基于燃氣內(nèi)燃機聯(lián)供方案、基于燃氣輪機聯(lián)供方案、基于燃氣內(nèi)燃機帶蓄能裝置聯(lián)供方案、基于燃氣輪機帶蓄能裝置聯(lián)供方案這四種方案進行比較分析。 (1)文章對常見的幾種冷熱電聯(lián)供系統(tǒng)的配置方案進行了總結(jié),并對各個方案的原理及優(yōu)缺點進行了詳細的闡述。然后對系統(tǒng)中涉及到的主要設(shè)備進行了數(shù)學(xué)建模,同時針對蓄能裝置的性能進行了建模。 (2)選擇了建筑負荷模擬軟件DesT,對太原地區(qū)某多功能辦公樓進行了全年逐時冷熱電負荷的模擬計算。根據(jù)建筑的負荷分布特點建立了四種聯(lián)供方案。然后通過以電定熱的思路確定了各聯(lián)供方案設(shè)備的容量。接下來根據(jù)各設(shè)備的數(shù)學(xué)模型建立起了以典型日運行費用最小為目標函數(shù)的聯(lián)供系統(tǒng)運行優(yōu)化模型,并選擇了線性規(guī)劃法和動態(tài)規(guī)劃法作為模型求解的優(yōu)化算法。根據(jù)優(yōu)化結(jié)果可以看出：基于燃氣內(nèi)燃機帶蓄能裝置的聯(lián)供系統(tǒng)其運行成本最低,而基于燃氣輪機不帶蓄能裝置的聯(lián)供系統(tǒng)其運行費用最高。 (3)為了全面的評價各方案的經(jīng)濟性,本文選擇了凈現(xiàn)值、凈現(xiàn)值率及投資回收期等經(jīng)濟性指標對各方案進行了評價。從結(jié)果上顯示：由于蓄能裝置起到轉(zhuǎn)移負荷的作用,使得帶蓄能裝置的聯(lián)供系統(tǒng)可以選擇較小容量的電動壓縮機組,這樣使系統(tǒng)的初投資有所減小。同時根據(jù)計算結(jié)果可以看到在建立的四個方案中,基于燃氣內(nèi)燃機帶蓄能裝置的冷熱電聯(lián)供系統(tǒng)的經(jīng)濟性最好。
[Abstract]:Distributed energy systems play an important role in solving energy crisis and environmental problems. With the development of global economy and society, the research of distributed energy system will be paid more and more attention. There are still problems in matching electricity demand, so sometimes the economic benefits of the distributed energy systems that are designed are not as good as expected. On the other hand, the configuration of distributed energy system is diverse. When several configuration schemes can meet the load demand, Which configuration scheme is more economical is also perplexing investors. This paper focuses on these problems: in the load matching problem, this paper will choose the energy storage device as the adjusting method of system load matching. In the selection of the scheme, this paper will be based on the gas combustion engine co-supply scheme, based on the gas turbine joint supply scheme, based on the gas internal combustion engine belt energy storage system joint supply scheme. The four schemes are compared and analyzed based on the combined supply scheme of gas turbine with accumulator. In this paper, several common configuration schemes of combined cooling and heating power supply system are summarized, and the principles, advantages and disadvantages of each scheme are described in detail. Then the mathematical modeling of the main equipment involved in the system is carried out. At the same time, the performance of the storage device is modeled. 2) selected the building load simulation software DesT to simulate the hourly cooling and thermal power load of a multifunctional office building in Taiyuan area. According to the load distribution characteristics of the building, four combined power supply schemes were established. According to the mathematical model of each equipment, the optimal operation model of the joint supply system is established, which takes the minimum operation cost of a typical day as the objective function. The linear programming method and the dynamic programming method are selected as the optimization algorithms to solve the model. According to the optimization results, it can be seen that the running cost of the combined power supply system based on the gas internal combustion engine with energy storage device is the lowest. The combined supply system based on gas turbine without energy storage device has the highest operating cost. 3) in order to evaluate the economy of each scheme comprehensively, the economic indexes such as net present value (NPV), net present value rate (NPV) and investment recovery period are selected to evaluate the schemes. The results show that the storage unit plays a role in transferring the load. The combined power supply system with energy storage device can select a small capacity electric compressor unit, so that the initial investment of the system is reduced. At the same time, according to the calculation results, we can see that in the four schemes established, The combined cooling and heat supply system based on gas combustion engine with energy storage device is the best.
【學(xué)位授予單位】：太原理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TU83

【引證文獻】

相關(guān)期刊論文 前1條

1 曾鳴;彭麗霖;孫靜惠;劉偉;武賡;;兼容需求側(cè)可調(diào)控資源的分布式能源系統(tǒng)經(jīng)濟優(yōu)化運行及其求解算法[J];電網(wǎng)技術(shù);2016年06期

相關(guān)碩士學(xué)位論文 前2條

1 杜月華;我國分布式能源投資模式及成本效益分析研究[D];華北電力大學(xué)(北京);2016年

2 王文森;生物質(zhì)氣冷熱電聯(lián)供系統(tǒng)設(shè)計與優(yōu)化控制[D];山東大學(xué);2015年

，

本文編號：1581088