發(fā)布時(shí)間：2018-07-01 20:45

  本文選題：海水抽水蓄能系統(tǒng) + 風(fēng)能發(fā)電系統(tǒng)��； 參考：《中國(guó)科學(xué)院大學(xué)(中國(guó)科學(xué)院工程熱物理研究所)》2017年碩士論文

【摘要】：電力儲(chǔ)能技術(shù)是建設(shè)清潔低碳、安全高效能源體系的重要支撐技術(shù)之一,其中,抽水蓄能(PHES)具有技術(shù)成熟、效率高、容量大、儲(chǔ)能周期長(zhǎng)等優(yōu)點(diǎn),是目前應(yīng)用最廣泛的電力儲(chǔ)能技術(shù)。海水抽水蓄能是利用海水作為工作介質(zhì)的新型抽水蓄能技術(shù),其利用海洋作為低位水庫(kù),水源充足、水位變化小,減少了系統(tǒng)土建工程費(fèi)用,同時(shí)解決了傳統(tǒng)抽水蓄能系統(tǒng)對(duì)淡水資源的依賴(lài)問(wèn)題,對(duì)于臨海和淡水資源缺乏的島國(guó)和城市具有廣闊的發(fā)展前景。目前國(guó)外對(duì)海水抽水蓄能系統(tǒng)特性及其與可再生能源發(fā)電系統(tǒng)相耦合的特性研究較少,國(guó)內(nèi)對(duì)海水抽水蓄能系統(tǒng)的研究基本處于空白狀態(tài),《水電發(fā)展"十三五"規(guī)劃》將"研究試點(diǎn)海水抽水蓄能"納入重點(diǎn)任務(wù),要求加強(qiáng)關(guān)鍵技術(shù)的研究,填補(bǔ)我國(guó)該項(xiàng)工程的空白。因此,本文開(kāi)展了海水抽水蓄能系統(tǒng)水力特性及其與風(fēng)力發(fā)電、太陽(yáng)能光伏發(fā)電耦合特性與優(yōu)化研究。1、構(gòu)建了傳統(tǒng)海水抽水蓄能系統(tǒng)和利用海底壓力的新型海水抽水蓄能系統(tǒng)的能量轉(zhuǎn)換模型,并利用MATLAB軟件對(duì)系統(tǒng)進(jìn)行了水力特性研究,揭示了在恒定負(fù)荷和變負(fù)荷兩種情況下,導(dǎo)葉開(kāi)度、水泵水輪機(jī)轉(zhuǎn)速和水頭等參數(shù)對(duì)系統(tǒng)性能的影響及其變化規(guī)律。2、構(gòu)建了風(fēng)/光/海水抽水蓄能混合系統(tǒng)的能量轉(zhuǎn)換模型,利用MATLAB軟件對(duì)混合系統(tǒng)進(jìn)行了耦合特性研究,揭示了系統(tǒng)規(guī)模對(duì)失電率、資源浪費(fèi)率和度電成本的影響及其變化規(guī)律。3、提出了風(fēng)/光/海水抽水蓄能混合系統(tǒng)單目標(biāo)(度電成本或資源過(guò)剩率)和多目標(biāo)(度電成本和資源過(guò)剩率、度電成本和失電率)優(yōu)化方法,建立了優(yōu)化分析模型,并針對(duì)典型案例進(jìn)行了單目標(biāo)和多目標(biāo)優(yōu)化分析,獲得了混合系統(tǒng)的單目標(biāo)優(yōu)化最優(yōu)解及多目標(biāo)優(yōu)化解集(Pareto解集)。4、在以度電成本為目標(biāo)函數(shù)的單目標(biāo)優(yōu)化的基礎(chǔ)上,對(duì)風(fēng)/光/海水抽水蓄能混合系統(tǒng)進(jìn)行了敏感性分析,揭示了各可變因素(用電負(fù)荷、風(fēng)速、太陽(yáng)輻射強(qiáng)度、風(fēng)力發(fā)電成本等)對(duì)混合系統(tǒng)度電成本的影響及其變化規(guī)律。
[Abstract]:Power energy storage technology is one of the important supporting technologies for building clean, low carbon, safe and efficient energy system. Among them, pumped storage (PHES) has the advantages of mature technology, high efficiency, large capacity, long energy storage period, etc. Is the most widely used power energy storage technology. Seawater pumped storage is a new type of pumped energy storage technology, which uses seawater as working medium. It uses the ocean as a low level reservoir, which has sufficient water source and little change of water level, thus reducing the cost of civil engineering of the system. At the same time, the dependence of the traditional pumped storage system on the freshwater resources is solved, which has a broad development prospect for the island countries and cities lacking of the coastal and fresh water resources. At present, there are few researches on the characteristics of seawater pumped storage system and its coupling with renewable energy generation system. The domestic research on seawater pumped storage system is basically blank. "the 13th Five-Year Plan for Hydropower Development" includes "Research pilot seawater pumped Storage" as a key task, which requires strengthening the research of key technologies. Fill in the blank of this project in our country. Therefore, the hydraulic characteristics of seawater pumped storage system and its relationship with wind power generation are carried out in this paper. The coupling characteristics and optimization of solar photovoltaic power generation are studied. 1. The energy conversion model of traditional seawater pumped storage system and a new seawater pumped storage system using seabed pressure is constructed, and the hydraulic characteristics of the system are studied by using MATLAB software. Under the condition of constant load and variable load, the influence of parameters such as guide vane opening, speed of pump turbine and head on system performance and its variation rule are revealed. The energy conversion model of wind / light / seawater pumped-storage system is constructed. The coupling characteristics of the hybrid system are studied by using MATLAB software, and it is revealed that the scale of the system has a positive effect on the power loss rate. The influence of resource wastage rate and power cost and its variation rule. 3. The single target (power cost or resource surplus rate) and multi-objective (power cost and resource surplus rate) of hybrid wind / light / seawater pumped storage system are proposed. Based on the optimization method of power cost and power loss rate, the optimization analysis model is established, and the single-objective and multi-objective optimization analysis is carried out for typical cases. The single objective optimal solution and Pareto solution set (Pareto solution set) of hybrid system are obtained. On the basis of single objective optimization based on the cost of degree of electricity, the sensitivity of hybrid wind / optical / seawater pumped storage system is analyzed. The influence of variable factors (power load, wind speed, solar radiation intensity, wind power cost, etc.) on the cost of the hybrid system is revealed.
【學(xué)位授予單位】：中國(guó)科學(xué)院大學(xué)(中國(guó)科學(xué)院工程熱物理研究所)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TV743;TV734

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