【摘要】：隨著我國能源結(jié)構(gòu)的不斷調(diào)整，清潔能源——天然氣的合理利用以及分布式能源的發(fā)展也越來越重要。微網(wǎng)冷熱電聯(lián)供是一種分布式能源聯(lián)合應(yīng)用方式，目前在國內(nèi)正處于試點實施階段，尚有很多問題需要進行理論研究和實施驗證。 論文選取華北某地區(qū)的一座商業(yè)建筑為研究對象，對其建立微網(wǎng)冷熱電聯(lián)供系統(tǒng)的模型，并進行相關(guān)優(yōu)化研究，，目的在于提高微網(wǎng)系統(tǒng)的能源利用率，降低污染物的排放，為微網(wǎng)冷熱電聯(lián)供系統(tǒng)的實施提供參考。首先，運用相關(guān)軟件對所選建筑實例進行了全年的冷熱電負(fù)荷預(yù)測，建立了微網(wǎng)聯(lián)供系統(tǒng)主要設(shè)備的數(shù)學(xué)模型，進而優(yōu)化得出了聯(lián)供系統(tǒng)的主要配置的容量。其次，針對聯(lián)供系統(tǒng)運行中發(fā)電量及余熱量有余的情況，將儲能系統(tǒng)引入到聯(lián)供系統(tǒng)中實現(xiàn)進一步的系統(tǒng)優(yōu)化，通過算例優(yōu)化計算得出，儲能系統(tǒng)和冰蓄冷空調(diào)的引入都能提高系統(tǒng)運行的經(jīng)濟性。此外，儲能系統(tǒng)的引入不僅能夠提高系統(tǒng)運行調(diào)節(jié)的靈活性和節(jié)能性，還有利于優(yōu)化系統(tǒng)配置和運行策略。最后，分析討論了能源價格與微網(wǎng)聯(lián)供系統(tǒng)的經(jīng)濟性之間的關(guān)系，結(jié)果表明，微網(wǎng)冷熱電聯(lián)供是否經(jīng)濟可行，很大程度上取決于當(dāng)?shù)啬茉磧r格。此外，微網(wǎng)內(nèi)分布式發(fā)電組成結(jié)構(gòu)也會影響聯(lián)供系統(tǒng)的運行和經(jīng)濟性。
[Abstract]:With the continuous adjustment of energy structure in China, the rational utilization of clean energy-natural gas and the development of distributed energy are becoming more and more important. Micro-grid combined cooling and heat supply is a kind of distributed energy combined application mode. At present, it is in the stage of pilot implementation in our country, and there are still many problems to be studied and verified in theory and practice. In this paper, a commercial building in a certain area of North China is selected as the research object, the model of the micro-grid combined cooling and heat supply system is established, and the related optimization research is carried out. The purpose of this paper is to improve the energy efficiency of the micro-grid system and reduce the emission of pollutants. It provides a reference for the implementation of the microgrid combined cooling and heat supply system. First of all, by using the relevant software to forecast the cooling and heat power load of the selected building, the mathematical model of the main equipment of the microgrid power supply system is established, and the capacity of the main configuration of the joint supply system is obtained. Secondly, the energy storage system is introduced into the co-supply system to realize further system optimization in view of the surplus of generating electricity and surplus heat in the operation of the co-supply system. The introduction of energy storage system and ice storage air conditioning system can improve the economy of system operation. In addition, the introduction of energy storage system can not only improve the flexibility and energy saving of system operation regulation, but also help to optimize the system configuration and operation strategy. Finally, the relationship between the energy price and the economy of the microgrid power supply system is analyzed and discussed. The results show that the economic feasibility of the micro-grid combined cooling and heat supply depends on the local energy price to a great extent. In addition, the distributed generation structure in the microgrid will also affect the operation and economy of the co-supply system.
【學(xué)位授予單位】：華北電力大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TU83

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