分布式光伏發(fā)電系統(tǒng)優(yōu)化設計
發(fā)布時間：2018-08-20 09:32
【摘要】：如今,隨著經(jīng)濟的快速增長,能源的巨大消耗和環(huán)境保護是世界各國都要面對的重大課題,潔凈能源的開發(fā)和利用已經(jīng)成為能源發(fā)展的大趨勢。太陽能作為清潔能源的一種,因其無窮無盡、源源不斷,無疑成為可持續(xù)發(fā)展戰(zhàn)略的完美清潔能源之一。分布式光伏電站以靠近用戶的特點,既能滿足我國東部地區(qū)快速增長的電力需求又能解決偏遠地區(qū)集中供電難的問題,因此推廣和使用分布式光伏電站擁有很好的經(jīng)濟和環(huán)保價值。本文以邢臺市的一個160.16kWp光伏車棚項目為例,對系統(tǒng)方案進行了設計、優(yōu)化和模擬驗證,對項目的可行性進行了評價,具體工作如下:(1)在大氣質(zhì)量一般的地區(qū)Meteonom7的輻射量數(shù)據(jù)比NASA的輻射數(shù)據(jù)更接近地面觀測值,由Meteonom7軟件查得邢臺地區(qū)的年總輻射量為1374kWh/m2·a,屬于太陽能資源豐富地帶,且當?shù)鼐哂羞m宜的氣象條件,綜合分析認為項目所在地適合建設光伏電站。(2)本光伏車棚主要由太陽能電池組件、組串式逆變器和交流并網(wǎng)設備組成;結合組件類型、規(guī)格和市場情況,本項目選用260Wp多晶硅雙玻組件;對比分析了集中式和組串式逆變設計方式,雖然組串式逆變方案初投資略高,但是發(fā)電量較多,故選用33kW的組串式逆變器。(3)跟蹤式系統(tǒng)能顯著提高發(fā)電量,但占地面積和初投資均較多,綜合對比認為固定安裝的陣列運行方式更適合本光伏車棚;為了減少計算量,本文開發(fā)了陣列間距的計算程序;在邢臺地區(qū),陣列朝南安裝時,經(jīng)計算最佳傾角為33度。增大傾角能夠提高組件的利用率但土地利用率卻降低,經(jīng)對比分析認為陣列朝南布置時的“經(jīng)濟傾角”為20度。為了簡化施工和排水,確定了車棚朝向為正東,傾角為5度;經(jīng)計算,以22塊組件為一串,分為5路和6路兩種形式接入逆變器都無MPPT(最大功率點跟蹤)損失,確定了系統(tǒng)的電氣主接線方案。(4)經(jīng)PVsyst光伏系統(tǒng)設計軟件模擬計算,本光伏車棚年均發(fā)電量是16.98萬千瓦時,30年總發(fā)電量為509.54萬千瓦時,系統(tǒng)綜合發(fā)電效率為87%,具有可觀的節(jié)約能源減少排放效果;項目初投資為120萬元,根據(jù)上網(wǎng)模式的不同,成本回收期在6.5~8年之間,年收益率為12.015%,自用比例越高投資回收期越短,收益越高,本光伏車棚項目具有可行性。
[Abstract]:Nowadays, with the rapid growth of economy, the huge consumption of energy and environmental protection is a major issue that all countries in the world have to face. The development and utilization of clean energy has become a major trend of energy development. As a kind of clean energy, solar energy has become one of the perfect clean energy for sustainable development strategy. The distributed photovoltaic power plants are close to the users, which can not only meet the rapid growth of power demand in the eastern part of China, but also solve the problem of the difficulty of centralized power supply in remote areas. Therefore, the promotion and use of distributed photovoltaic power plants have good economic and environmental value. Taking a 160.16kWp photovoltaic vehicle shed project in Xingtai as an example, this paper designs, optimizes and simulates the system scheme, and evaluates the feasibility of the project. The specific work is as follows: (1) the radiation data of Meteonom7 is closer to the ground observation value than the radiation data of NASA in the area of general atmospheric quality. The total annual radiation amount in Xingtai area is found by Meteonom7 software to be 1374kWh/m2 a, which belongs to the rich area of solar energy resources. And the local weather conditions, comprehensive analysis that the site of the project is suitable for the construction of photovoltaic power plants. (2) the photovoltaic vehicle shed is mainly composed of solar cell modules, series inverter and AC grid-connected equipment, combined with the type of components, Specification and market situation, this project chooses 260Wp polycrystalline silicon double glass assembly, contrasts and analyzes the centralized and the group series inverter design method, although the group string inverter scheme initial investment is slightly higher, but the electricity generation is more, Therefore, the 33kW series inverter is selected. (3) the tracking system can significantly increase the power generation, but the area and the initial investment are both large. It is considered that the fixed array operation mode is more suitable for the photovoltaic shed, and in order to reduce the calculation amount, it is considered that the fixed array operation mode is more suitable for the photovoltaic shed. In this paper, the calculation program of array spacing is developed, and the optimum inclination angle is 33 degrees when the array is installed south in Xingtai area. Increasing the inclination angle can increase the utilization ratio of the module but decrease the land utilization ratio. The economic inclination angle of the array is 20 degrees when the array is arranged southward. In order to simplify the construction and drainage, it is determined that the vehicle shed faces to the east and the inclination angle is 5 degrees. By calculation, 22 modules are taken as a string, which are divided into 5 channels and 6 ways of access inverters without MPPT loss. The main electrical connection scheme of the system is determined. (4) through the simulation calculation of PVsyst photovoltaic system design software, the average annual capacity of the photovoltaic shed is 169800 kilowatt-hours, and the total power generation in 30 years is 5.0954 million kilowatt-hours. The comprehensive power generation efficiency of the system is 87, which has considerable energy saving and emission reduction effect. The initial investment of the project is 1.2 million yuan. According to the different Internet access modes, the cost recovery period is between 6.5 and 8 years, and the annual return rate is 12.015. The higher the ratio of self-use is, the shorter the investment payback period is. The higher the revenue, the photovoltaic shed project is feasible.
【學位授予單位】：天津商業(yè)大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TM615
本文編號：2193155
[Abstract]:Nowadays, with the rapid growth of economy, the huge consumption of energy and environmental protection is a major issue that all countries in the world have to face. The development and utilization of clean energy has become a major trend of energy development. As a kind of clean energy, solar energy has become one of the perfect clean energy for sustainable development strategy. The distributed photovoltaic power plants are close to the users, which can not only meet the rapid growth of power demand in the eastern part of China, but also solve the problem of the difficulty of centralized power supply in remote areas. Therefore, the promotion and use of distributed photovoltaic power plants have good economic and environmental value. Taking a 160.16kWp photovoltaic vehicle shed project in Xingtai as an example, this paper designs, optimizes and simulates the system scheme, and evaluates the feasibility of the project. The specific work is as follows: (1) the radiation data of Meteonom7 is closer to the ground observation value than the radiation data of NASA in the area of general atmospheric quality. The total annual radiation amount in Xingtai area is found by Meteonom7 software to be 1374kWh/m2 a, which belongs to the rich area of solar energy resources. And the local weather conditions, comprehensive analysis that the site of the project is suitable for the construction of photovoltaic power plants. (2) the photovoltaic vehicle shed is mainly composed of solar cell modules, series inverter and AC grid-connected equipment, combined with the type of components, Specification and market situation, this project chooses 260Wp polycrystalline silicon double glass assembly, contrasts and analyzes the centralized and the group series inverter design method, although the group string inverter scheme initial investment is slightly higher, but the electricity generation is more, Therefore, the 33kW series inverter is selected. (3) the tracking system can significantly increase the power generation, but the area and the initial investment are both large. It is considered that the fixed array operation mode is more suitable for the photovoltaic shed, and in order to reduce the calculation amount, it is considered that the fixed array operation mode is more suitable for the photovoltaic shed. In this paper, the calculation program of array spacing is developed, and the optimum inclination angle is 33 degrees when the array is installed south in Xingtai area. Increasing the inclination angle can increase the utilization ratio of the module but decrease the land utilization ratio. The economic inclination angle of the array is 20 degrees when the array is arranged southward. In order to simplify the construction and drainage, it is determined that the vehicle shed faces to the east and the inclination angle is 5 degrees. By calculation, 22 modules are taken as a string, which are divided into 5 channels and 6 ways of access inverters without MPPT loss. The main electrical connection scheme of the system is determined. (4) through the simulation calculation of PVsyst photovoltaic system design software, the average annual capacity of the photovoltaic shed is 169800 kilowatt-hours, and the total power generation in 30 years is 5.0954 million kilowatt-hours. The comprehensive power generation efficiency of the system is 87, which has considerable energy saving and emission reduction effect. The initial investment of the project is 1.2 million yuan. According to the different Internet access modes, the cost recovery period is between 6.5 and 8 years, and the annual return rate is 12.015. The higher the ratio of self-use is, the shorter the investment payback period is. The higher the revenue, the photovoltaic shed project is feasible.
【學位授予單位】：天津商業(yè)大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TM615
【參考文獻】
相關期刊論文 前10條
1 潘慧;;大型光伏電站中集中式逆變器與組串式逆變器的選擇[J];上海節(jié)能;2017年01期
2 江華;;國內(nèi)外光伏產(chǎn)業(yè)發(fā)展現(xiàn)狀與趨勢[J];太陽能;2016年12期
3 楊晉南;;論光伏發(fā)電在節(jié)能減排方面的優(yōu)勢[J];城市建設理論研究(電子版);2016年33期
4 康慨;;光伏電站設計中的關鍵問題 系統(tǒng)優(yōu)化設計[J];電氣應用;2016年21期
5 沈金榮;惠杰;倪瑩;陳星鶯;;環(huán)境因素對光伏發(fā)電量綜合回歸分析[J];可再生能源;2016年07期
6 周健;馬永龍;陳茂蘭;林偉;王禮偉;陳挺;;地面光伏電站逆變器選型分析及優(yōu)化配置[J];能源與環(huán)境;2016年03期
7 王曄;;光伏支架的設計選型及經(jīng)濟性分析[J];建筑技術開發(fā);2016年05期
8 李英姿;李智;;光伏發(fā)電項目太陽能輻射量數(shù)據(jù)對比與選用[J];建筑電氣;2016年04期
9 包婧文;;光伏產(chǎn)業(yè):回顧2015 展望2016[J];太陽能;2016年02期
10 趙林;韓曉亮;侯俊強;鄔超慧;王中正;;光伏電站組件選型分析[J];太陽能;2015年12期
相關博士學位論文 前1條
1 周潘兵;光伏硅晶材料的熱改性研究[D];南昌大學;2012年
相關碩士學位論文 前3條
1 吳露露;影響光伏系統(tǒng)高效利用太陽能的因素實驗研究[D];內(nèi)蒙古工業(yè)大學;2014年
2 王瑤;單晶硅太陽能電池生產(chǎn)工藝的研究[D];湖南大學;2010年
3 張亞璽;太陽能光伏發(fā)電系統(tǒng)結構布置改進及發(fā)電性能研究[D];東南大學;2015年
，本文編號：2193155
本文鏈接：http://sikaile.net/kejilunwen/dianlidianqilunwen/2193155.html
最近更新
教材專著
