本文選題：冷熱電聯(lián)供　切入點(diǎn)：目標(biāo)函數(shù)　出處：《上海電力學(xué)院》2017年碩士論文

【摘要】：作為越來越受到關(guān)注的天然氣冷熱電聯(lián)供(Combined Cooling,Heating and Power,CCHP)系統(tǒng),不需要進(jìn)行大電網(wǎng)遠(yuǎn)距離高壓或者超高壓線路建設(shè),大大降低了線損,并且非常明顯地節(jié)省了輸配電建設(shè)的投資費(fèi)用。另外,隨著社會(huì)的發(fā)展,加上近幾年霧霾天氣的嚴(yán)重影響,人們對(duì)環(huán)境保護(hù)的意識(shí)也逐漸增強(qiáng),作為清潔能源的天然氣資源越來越得到能源產(chǎn)業(yè)的青睞。對(duì)天然氣CCHP系統(tǒng)進(jìn)行運(yùn)行優(yōu)化研究,實(shí)現(xiàn)能源供應(yīng)與用戶負(fù)荷之間的協(xié)調(diào)匹配,是目前研究的熱點(diǎn)問題。本文對(duì)能源站改造前后的能源供應(yīng)系統(tǒng)做了詳細(xì)分析,并對(duì)改造后系統(tǒng)的燃?xì)廨啓C(jī)、余熱鍋爐、蒸汽輪機(jī)、輔助鍋爐、吸收式制冷機(jī)和電制冷機(jī)建立了數(shù)學(xué)模型,從而使燃?xì)?蒸汽聯(lián)合循環(huán)供能系統(tǒng)的運(yùn)行優(yōu)化結(jié)果更加準(zhǔn)確。分別以運(yùn)行總成本最低作為單目標(biāo)函數(shù),以能源節(jié)約率和二氧化碳減排率綜合指標(biāo)最大作為多目標(biāo)函數(shù)進(jìn)行優(yōu)化。優(yōu)化模型的求解問題為典型的混合型整數(shù)非線性規(guī)劃(Mixed-Integer Nonlinear Programming,MINLP)問題。運(yùn)用LINGO軟件進(jìn)行模型求解,利用MATLAB軟件對(duì)優(yōu)化結(jié)果進(jìn)行分析對(duì)比。對(duì)比發(fā)現(xiàn),若以運(yùn)行總成本最低為目標(biāo)函數(shù),電價(jià)起到主導(dǎo)性作用,“峰-谷”時(shí)段分布對(duì)運(yùn)行優(yōu)化的結(jié)果起著重要作用。若以能源節(jié)約率和二氧化碳減排率為多目標(biāo)函數(shù)進(jìn)行優(yōu)化,則優(yōu)先使用能源站本身機(jī)組進(jìn)行產(chǎn)能,如果產(chǎn)能不夠,則再從電網(wǎng)端引入電量。另外,天然氣CCHP能源系統(tǒng)對(duì)節(jié)能環(huán)保起到非常明顯的積極作用。本文建立了全面的評(píng)價(jià)指標(biāo)體系,分別從經(jīng)濟(jì)性、環(huán)保性、節(jié)能性、技術(shù)先進(jìn)性、可靠性和安全性等六個(gè)方面進(jìn)行了綜合評(píng)價(jià),使得評(píng)價(jià)結(jié)果更加全面綜合,優(yōu)化了其他學(xué)者在評(píng)價(jià)體系方面只重視經(jīng)濟(jì)性的不足。使用一種新的1-9標(biāo)度方法確定評(píng)價(jià)指標(biāo)元素的權(quán)重值,并結(jié)合專家打分法、層次分析法、半梯形模糊隸屬度法,建立了CCHP系統(tǒng)模糊評(píng)價(jià)模型,既考慮了專家的主觀意見,又綜合了CCHP系統(tǒng)運(yùn)行的實(shí)際指標(biāo)參數(shù)。把主觀意見與客觀數(shù)據(jù)進(jìn)行了有效的結(jié)合,使得評(píng)價(jià)結(jié)果更加科學(xué)合理,改變傳統(tǒng)評(píng)價(jià)方法的主觀性太強(qiáng)的缺點(diǎn)。最后結(jié)合實(shí)際應(yīng)用,進(jìn)行案例分析。
[Abstract]:Natural gas cooling heating as more and more attention for the (Combined Cooling, Heating and Power, CCHP) system, without the need for large power grid or long-distance high-voltage EHV transmission line construction, greatly reducing the power loss, and greatly saves the investment cost of power transmission and distribution construction. In addition, with the development of society, and in recent years, the haze weather seriously affecting the people's awareness of environmental protection has gradually increased, as natural gas resources and clean energy is the energy industry's favor. Operation optimization research on natural gas CCHP system, realize the coordination between energy supply and load matching, is a hot research topic in this paper. A detailed analysis of the energy supply system of energy station before and after the modification, and the gas turbine, the reformed system of waste heat boiler, steam turbine, auxiliary boiler, absorption refrigeration machine and electric system The cooler has established the mathematical model, so that the optimization results of gas steam combined cycle power supply system more accurate. Respectively to the total cost of operation as the lowest single objective function, the energy saving rate and the rate of carbon dioxide emission reduction index as the multi-objective function optimization problem. To solve the optimization model for mixed integer nonlinear programming the typical (Mixed-Integer Nonlinear Programming, MINLP). The model was solved by using the LINGO software, using MATLAB software to analyze the optimization results. By comparison, the lowest total cost in terms of operation as the objective function, price plays an important role, "peak valley" time distribution plays an important role in the operation of the optimization results. In terms of energy saving rate and carbon dioxide emission reduction rate for multi objective optimization function, the priority use of energy station itself unit capacity, such as fruit production Can not, then from the power grid is introduced into electricity. In addition, the energy system of natural gas CCHP positive effect is very obvious in energy-saving and environmental protection. This paper established a comprehensive evaluation index system, respectively, from the economic, environmental protection, energy saving, advanced technology, six aspects of reliability and safety for the comprehensive the evaluation, which makes the evaluation results more comprehensive optimization of other scholars only lack of economic importance in the evaluation system. Using a new 1-9 scale method to determine the weight of evaluation index values, combined with expert scoring method, AHP, semi trapezoid fuzzy membership method, established the fuzzy evaluation system CCHP the model, which considers the subjective views of experts, and comprehensive practical parameters of CCHP system. The subjective and objective data were effectively combined, which makes the evaluation results more scientific and reasonable, change the pass The shortcomings of the subjective evaluation method are too subjective. Finally, the case analysis is carried out in combination with the practical application.

【學(xué)位授予單位】：上海電力學(xué)院
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TM61;TU83;TU996

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本文編號(hào)：1715904