本文關(guān)鍵詞：南方地區(qū)分布式供能系統(tǒng)優(yōu)化配置與綜合評價研究　出處：《中國科學(xué)院研究生院（工程熱物理研究所）》2013年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 分布式聯(lián)供系統(tǒng) 優(yōu)化配置 優(yōu)化運行 不確定性評價 蓄能裝置

【摘要】：我國南方地區(qū)能源消費巨大、環(huán)境形勢嚴峻,分布式供能技術(shù)對南方地區(qū)合理用能、節(jié)能減排具有重要價值。本文以系統(tǒng)優(yōu)化配置模型為基礎(chǔ),針對南方地區(qū)五種典型建筑物,開展了基于小燃機、微燃機和內(nèi)燃機的分布式熱電冷聯(lián)供系統(tǒng)的優(yōu)化配置與綜合評價研究。論文主要工作如下： (1)建立了燃氣輪機、燃氣內(nèi)燃機、吸收式制冷機、余熱／燃氣鍋爐、電壓縮式制冷機和蓄能裝置等分布式供能系統(tǒng)主要設(shè)備的熱力、經(jīng)濟、排放數(shù)學(xué)模型,給出了經(jīng)濟、能源利用率、環(huán)境影響和調(diào)峰性能等系統(tǒng)綜合評價指標(biāo)。在所建的熱力模型中,各主要設(shè)備考慮了部分負荷率的影響及最大、最小出力的限制,燃氣輪機還考慮環(huán)境溫度的影響,為對分布式供能系統(tǒng)進行準確分析和評價奠定了基礎(chǔ)。 (2)基于超結(jié)構(gòu)建模方法,構(gòu)建了一種可實現(xiàn)系統(tǒng)結(jié)構(gòu)、離散設(shè)備臺數(shù)和容量、運行規(guī)律同步優(yōu)化的分布式聯(lián)供系統(tǒng)優(yōu)化配置模型。通過將非線性約束條件等價線性化處理,有效解決了規(guī)模龐大的混合整數(shù)非線性規(guī)劃問題的求解難題。此優(yōu)化配置模型為分布式供能系統(tǒng)的選型優(yōu)化和綜合評價提供了一個有效手段。 (3)在南方地區(qū)氣候特點及能源價格體系下,針對辦公樓、商場、居民住宅、酒店和醫(yī)院五種典型建筑物,進行了基于小燃機、微燃機和內(nèi)燃機的分布式供能系統(tǒng)優(yōu)化配置與綜合評價研究。結(jié)果表明,除居民住宅外,其它四種建筑物均適合應(yīng)用分布式供能技術(shù),其中酒店和醫(yī)院最為適宜。對于三種主機,內(nèi)燃機系統(tǒng)的經(jīng)濟性要優(yōu)于燃氣輪機系統(tǒng)；兩種燃氣輪機系統(tǒng)各有特點,其中小燃機合適的功率范圍在4～5MW。 (4)運用單因素敏感性分析方法,分別考察了能源價格、多余電力上網(wǎng)政策以及主機價格對系統(tǒng)優(yōu)化配置及其性能的影響。運用蒙特卡羅模擬方法,綜合研究了多種不確定性因素的影響。結(jié)果表明,影響系統(tǒng)經(jīng)濟性的最重要因素為天然氣價和電負荷,南方地區(qū)天然氣價格較高,會阻礙分布式供能系統(tǒng)的發(fā)展；多余電力上網(wǎng)政策會對系統(tǒng)性能產(chǎn)生一定的影響,但并非關(guān)鍵影響因素；主機價格的降低可有效縮短回收期。 本文形成的數(shù)據(jù)、結(jié)果和結(jié)論可為分布式供能技術(shù)在南方地區(qū)的應(yīng)用和發(fā)展提供一定的參考。
[Abstract]:The energy consumption in southern China is huge and the environmental situation is severe. Distributed energy supply technology is of great value to the rational use of energy, energy saving and emission reduction in southern China. This paper is based on the system optimal allocation model. For five typical buildings in southern China, the optimal configuration and comprehensive evaluation of distributed heat, electricity and cooling systems based on small gas turbine, micro gas engine and internal combustion engine are studied. The main work of this paper is as follows: The main equipments of the distributed energy supply system, such as gas turbine, gas combustion engine, absorption refrigerator, waste heat / gas boiler, electric compression refrigerator and energy storage device, are established. The comprehensive evaluation indexes of economy, energy efficiency, environmental impact and peak-shaving performance are given. In the thermodynamic model, the influence of partial load rate and the maximum load rate are taken into account in the thermal model. The limitation of the minimum output force and the consideration of the influence of environmental temperature on the gas turbine have laid a foundation for the accurate analysis and evaluation of the distributed energy supply system. Based on the superstructure modeling method, a realizable system structure, discrete equipment number and capacity is constructed. The optimal configuration model of distributed co-supply system based on synchronous optimization of operation law. The nonlinear constraint condition is linearized by equivalent method. The problem of solving the large scale mixed integer nonlinear programming problem is effectively solved, and this optimal configuration model provides an effective means for the selection, optimization and comprehensive evaluation of distributed energy supply systems. Under the climate characteristics and energy price system in the southern region, five typical buildings, such as office building, shopping mall, residential building, hotel and hospital, are based on small gas turbine. The research on the optimal configuration and comprehensive evaluation of distributed energy supply system for micro gas turbine and internal combustion engine. The results show that the other four kinds of buildings are suitable for the application of distributed energy supply technology except residential buildings. For the three main engines, the economy of internal combustion engine system is better than that of gas turbine system. The two gas turbine systems have their own characteristics, in which the suitable power range of small gas turbine is 4 ~ 5 MW. 4) the effects of energy price, redundant power policy and host price on the optimal configuration and performance of the system are investigated by using the single factor sensitivity analysis method, and the Monte Carlo simulation method is used. The results show that the most important factors affecting the system economy are gas price and electricity load, and the natural gas price is higher in southern region. It will hinder the development of distributed energy supply system; Redundant power access policy will have a certain impact on the performance of the system, but not a key factor; The reduction of mainframe price can effectively shorten the payback period. The data, results and conclusions obtained in this paper can provide some references for the application and development of distributed energy supply technology in southern China.
【學(xué)位授予單位】：中國科學(xué)院研究生院（工程熱物理研究所）
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TU8

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