微型燃?xì)廨啓C(jī)冷熱電聯(lián)供系統(tǒng)集成優(yōu)化與動(dòng)態(tài)運(yùn)行規(guī)律研究
發(fā)布時(shí)間：2018-06-25 09:43
本文選題：MGT-CCHP系統(tǒng) + 可調(diào)回?zé)?/strong>��； 參考：《東南大學(xué)》2015年博士論文
【摘要】：分布式能源系統(tǒng)集節(jié)能、環(huán)保和高安全等優(yōu)勢(shì)于一身,是緩解能源危機(jī),減少環(huán)境污染和溫室氣體排放,實(shí)現(xiàn)可持續(xù)發(fā)展戰(zhàn)略的有效途徑。作為分布式能源系統(tǒng)的重要發(fā)展方向,微型燃?xì)廨啓C(jī)冷熱電聯(lián)供系統(tǒng)(簡(jiǎn)稱MGT-CCHP系統(tǒng))是提供清潔、可靠、高質(zhì)量、多用途的小型分布式能源的最佳方式之一。國(guó)內(nèi)外對(duì)MGT-CCHP系統(tǒng)集成前后的靜態(tài)性能已有較為深入的研究,但對(duì)部分設(shè)備及集成后系統(tǒng)的動(dòng)態(tài)機(jī)理、控制規(guī)律和優(yōu)化特性仍缺乏足夠認(rèn)識(shí),以至于在MGT-CCHP系統(tǒng)的規(guī)劃、設(shè)計(jì)和運(yùn)行等方面均遇到一定的困難。本文通過建立MGT-CCHP系統(tǒng)的動(dòng)態(tài)特性模擬、協(xié)調(diào)控制和集成優(yōu)化環(huán)境,運(yùn)用數(shù)值模擬方法,對(duì)MGT-CCHP系統(tǒng)的動(dòng)態(tài)機(jī)理、控制規(guī)律和優(yōu)化特性進(jìn)行了系統(tǒng)深入的研究。論文針對(duì)MGT-CCHP系統(tǒng)配置優(yōu)化中模型精度和求解便捷難以兼顧的問題,提出了基于設(shè)備3E變工況模型的MGT-CCHP系統(tǒng)集成特性建模方法,建立了能同時(shí)反映系統(tǒng)能耗、經(jīng)濟(jì)和污染物排放變工況特性的MGT-CCHP系統(tǒng)配置優(yōu)化模型,提高了配置優(yōu)化結(jié)果的準(zhǔn)確性和精度；將配置優(yōu)化的求解問題分解為可行方案的篩選和運(yùn)行策略的優(yōu)化問題,從結(jié)構(gòu)形式和負(fù)荷匹配兩個(gè)層面提出了適用的預(yù)定篩選策略,避免了配置組合量爆炸式增長(zhǎng),同時(shí)提高了可行方案質(zhì)量；提出等微增運(yùn)行優(yōu)化法,使得多設(shè)備多負(fù)荷耦合下的MGT-CCHP系統(tǒng)負(fù)荷調(diào)度優(yōu)化問題求解更為便捷。論文提出了模塊化、通用化、分區(qū)集總和機(jī)理為主的建模思路,突破了MGT-CCHP系統(tǒng)設(shè)備形式和組合形式的限制,兼顧模型通用性和精度要求,首次建立了反映可調(diào)回?zé)崾組GT-CCHP單元型和多元型集成系統(tǒng)動(dòng)態(tài)運(yùn)行規(guī)律的數(shù)學(xué)模型；基于Matlab/Simulink平臺(tái),提出了分布參數(shù)環(huán)節(jié)、微分方程左右均含微分項(xiàng)的環(huán)節(jié)以及微分方程組和代數(shù)方程組強(qiáng)耦合環(huán)節(jié)等復(fù)雜模型的預(yù)處理和求解思路,實(shí)現(xiàn)了MGT-CCHP系統(tǒng)的二次建模；建立了MGT-CCHP各設(shè)備及單元型和多元型集成系統(tǒng)的動(dòng)態(tài)數(shù)值仿真和調(diào)試環(huán)境,為MGT-CCHP系統(tǒng)動(dòng)態(tài)特性和機(jī)理研究提供了重要平臺(tái)。論文以80kW可調(diào)回?zé)崾轿⑿腿細(xì)廨啓C(jī)和425kW溴化鋰雙效吸收式制冷機(jī)組成的MGT-CCHP系統(tǒng)為例,進(jìn)行了靜態(tài)設(shè)計(jì)和動(dòng)態(tài)數(shù)值模擬研究。通過仿真實(shí)驗(yàn),定量和定性深入分析了各集成設(shè)備及單元型和多元型MGT-CCHP系統(tǒng)的動(dòng)態(tài)響應(yīng)特性,揭示了MGT-CCHP系統(tǒng)主要參數(shù)的變化規(guī)律及各參數(shù)間的動(dòng)態(tài)耦合關(guān)系。論文提出了MGT-CCHP系統(tǒng)動(dòng)態(tài)機(jī)理模型的簡(jiǎn)化方法,建立了適用于控制的冷熱電聯(lián)供傳遞函數(shù)模型,為配置結(jié)構(gòu)靈活、設(shè)計(jì)參數(shù)多樣的MGT-CCHP系統(tǒng)的控制建模提供了重要參考；研究了單元型和多元結(jié)構(gòu)型可調(diào)回?zé)崾組GT-CCHP系統(tǒng)的協(xié)調(diào)控制問題,提出了以微型燃?xì)廨啓C(jī)排煙溫度為關(guān)鍵狀態(tài)量的分解補(bǔ)償策略,基于多變量頻域設(shè)計(jì)方法實(shí)現(xiàn)了MGT-CCHP單元機(jī)組的冷熱電協(xié)調(diào)控制；以母管煙氣能量輸入輸出平衡為中心,設(shè)計(jì)了多元結(jié)構(gòu)型MGT-CCHP系統(tǒng)的閉環(huán)控制系統(tǒng),實(shí)現(xiàn)了微型燃?xì)廨啓C(jī)群和溴化鋰制冷機(jī)群的協(xié)調(diào)運(yùn)行。論文創(chuàng)新性地運(yùn)用混合邏輯建模方法建立了適用于無(wú)蓄能并網(wǎng)MGT-CCHP系統(tǒng)運(yùn)行優(yōu)化的通用線性矩陣模型,該模型合理反映了多設(shè)備集成和多負(fù)荷產(chǎn)供的復(fù)雜耦合特性,能夠在考慮系統(tǒng)運(yùn)行負(fù)荷限和設(shè)備間啟停邏輯的條件下,研究基于負(fù)荷主次策略和指標(biāo)最優(yōu)策略組合下的系統(tǒng)運(yùn)行特性；通過優(yōu)化算例,分析了該模型的性能及聯(lián)供機(jī)組在經(jīng)濟(jì)目標(biāo)驅(qū)動(dòng)下跟蹤負(fù)荷需求的運(yùn)行特性,并研究了經(jīng)濟(jì)、能效、環(huán)保以及三者綜合最優(yōu)運(yùn)行策略下MGT-CCHP系統(tǒng)的優(yōu)化運(yùn)行規(guī)律。
[Abstract]:The distributed energy system has the advantages of energy saving, environmental protection and high safety. It is an effective way to alleviate the energy crisis, reduce the environmental pollution and greenhouse gas emission, and realize the sustainable development strategy. As an important development direction of the distributed energy system, the micro gas turbine cooling and power supply system (MGT-CCHP system) provides cleaning, It is one of the best ways of reliable, high quality and multi-purpose small distributed energy. The static performance of MGT-CCHP system has been deeply studied at home and abroad. However, the dynamic mechanism, control law and optimization characteristics of some equipment and the integrated system are still lacking enough to understand the design and design of the MGT-CCHP system. The dynamic characteristic simulation of the MGT-CCHP system, the coordinated control and the integrated optimization environment are established in this paper. The dynamic mechanism, the control law and the optimization characteristics of the MGT-CCHP system are systematically studied by using the numerical simulation method. The paper aims at the model precision of the configuration optimization of the MGT-CCHP system. In order to solve the problem that is convenient and difficult to solve, a modeling method of MGT-CCHP system integration characteristics based on 3E variable condition model is proposed. A MGT-CCHP system configuration optimization model, which can simultaneously reflect the energy consumption of the system, and the characteristics of the economic and pollutant discharge conditions, is established, which improves the accuracy and accuracy of the configuration optimization results; and the configuration optimization is optimized. The solving problem is decomposed into the selection of the feasible scheme and the optimization of the running strategy. From the two levels of structure form and load matching, a suitable predefined selection strategy is proposed, which avoids the explosive growth of the configuration combination and improves the quality of the feasible scheme, and the same micro increment operation optimization method is proposed, which makes the MGT- of multi load and multi load coupling. The CCHP system is more convenient to solve the problem of load scheduling optimization. This paper puts forward the modeling idea of modularization, generality and the total mechanism of zoning set, which breaks through the restrictions on the form and combination of the MGT-CCHP system, and takes into account the generality and precision requirements of the model. It is the first time to establish a reportable MGT-CCHP unit and a multivariate integration. The mathematical model of the dynamic running law of the system; based on the Matlab/Simulink platform, the pre processing and solving ideas of the complex models, such as distributed parameter links, differential equations with differential equations and differential equations and strong coupling links of algebraic equations, are proposed, and the two modeling of the MGT-CCHP system is realized, and MGT-CCHP is established. The dynamic numerical simulation and debugging environment of the equipment and unit type and multi type integrated system provide an important platform for the study of the dynamic characteristics and mechanism of the MGT-CCHP system. The thesis takes 80kW as an example to adjust the MGT-CCHP system composed of a thermal micro gas turbine and a 425kW LiBr double effect absorption chiller, and carries out static design and dynamic numerical values. Simulation study. Through the simulation experiment, the dynamic response characteristics of the integrated equipment and the unit type and multi type MGT-CCHP system are analyzed quantitatively and qualitatively, and the changes of the main parameters of the MGT-CCHP system and the dynamic coupling relationship between the parameters are revealed. The simplified method of the dynamic mechanism model of the MGT-CCHP system is put forward, and the suitable method is set up. The cold and heat transfer function model used for control is an important reference for the control modeling of MGT-CCHP system with flexible configuration and various design parameters, and the coordination control problem of the unit type and multi structure reportable thermal MGT-CCHP system is studied, and the key state of the exhaust temperature of a micro gas turbine is put forward. The solution compensation strategy is based on the multi variable frequency domain design method to realize the cold and heat coordination control of the MGT-CCHP unit. The closed loop control system of the multi structure MGT-CCHP system is designed with the balance of the input and output of the flue gas energy input and output as the center. The coordinated operation of the micro gas turbine group and the lithium bromide refrigerating machine group is realized. The paper is innovative. The hybrid logic modeling method is used to establish a general linear matrix model suitable for the operation optimization of the MGT-CCHP system without energy storage. The model reflects the complex coupling characteristics of multi device integration and multi load production, and can study the main and secondary policy based on the load limit of the system and the starting and stopping logic between the equipment. The operation characteristics of the system under the combination of the optimal strategy and the optimal strategy are briefly analyzed. The performance of the model and the running characteristics of the tracking load demand driven by the combined supply unit under the economic target are analyzed by the optimization example. The optimal running rules of the MGT-CCHP system under the economy, energy efficiency, environmental protection and the integrated optimal operation strategy of the three parties are studied.
【學(xué)位授予單位】：東南大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2015
【分類號(hào)】：TU83;TM61
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本文編號(hào)：2065491
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