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分布式光伏發(fā)電在冬暖式大棚的應(yīng)用

發(fā)布時(shí)間:2018-06-02 00:53

  本文選題:冬暖式蔬菜大棚 + 太陽能 ; 參考:《山東大學(xué)》2014年碩士論文


【摘要】:隨著人類社會(huì)經(jīng)濟(jì)的快速發(fā)展,能源短缺和環(huán)境污染成為當(dāng)今世界面臨的兩大挑戰(zhàn)。太陽能資源豐富,分布廣泛,開發(fā)利用前景廣闊。太陽能發(fā)電作為太陽能利用的重要方式,已經(jīng)得到世界各國的普遍關(guān)注[1]。在目前的技術(shù)條件下,太陽能的利用主要有兩個(gè)方面,一是直接利用太陽光的熱能,冬暖式蔬菜大棚就是直接利用太陽光的熱能的簡單形式;二是利用半導(dǎo)體材料的光伏效應(yīng)發(fā)電。本文主要討論對(duì)這兩種太陽能利用方式的結(jié)合使用。 冬暖式蔬菜大棚是我國北方特別是山東地區(qū)得到廣泛應(yīng)用的蔬菜種植技術(shù)。利用泥土、空心磚等保溫性能較好的建筑材料建造圍墻,利用塑料薄膜作為透光、保溫、保濕、阻風(fēng)的材料,充分利用冬季太陽輻射的熱能,在冬季寒冷天氣等惡劣環(huán)境下,在塑料大棚造成的封閉空間內(nèi),充分吸收利用太陽光的熱能,提高大棚內(nèi)的溫度,防止外界的冰雪、低溫等對(duì)蔬菜造成的損害,為大棚內(nèi)的蔬菜植物提供良好的生長環(huán)境。 分布式太陽能光伏發(fā)電產(chǎn)生電能的原理是將特定的半導(dǎo)體材料制成太陽能光伏電池,利用光伏電池的光生伏打效應(yīng),將太陽能直接轉(zhuǎn)換為直流電能,然后通過必要的轉(zhuǎn)換,成為適合不同的電力負(fù)荷要求的電源[2,,3]。根據(jù)太陽能光伏發(fā)電系統(tǒng)的規(guī)模及實(shí)際條件,可以配置蓄電池作為電能儲(chǔ)存、電力供應(yīng)平衡及短時(shí)負(fù)荷變化的緩沖,也可以通過光伏逆變器將太陽能光伏組件發(fā)出的直流電轉(zhuǎn)換為交流電,并通過變壓器進(jìn)行電壓變換,將太陽能光伏發(fā)電系統(tǒng)并入電網(wǎng)。 將冬暖式蔬菜大棚和分布式光伏發(fā)電這兩種得到廣泛應(yīng)用的太陽能利用方式結(jié)合起來,可以充分利用冬暖式蔬菜大棚區(qū)域的剩余空間,在保證蔬菜生產(chǎn)的同時(shí),利用大棚區(qū)空閑外部空間太陽能進(jìn)行發(fā)電,從而更加合理高效的利用土地,發(fā)揮綜合效益。這種方式能夠充分發(fā)揮空間優(yōu)勢(shì),形成更加完整合理的太陽能利用方案,符合我國的能源發(fā)展戰(zhàn)略,符合山東省能源產(chǎn)業(yè)政策。山東省作為冬暖式大棚大量推廣使用的蔬菜生產(chǎn)地,這種利用模式具有很大的發(fā)展空間。
[Abstract]:With the rapid development of human society and economy, energy shortage and environmental pollution have become two major challenges facing the world. The solar energy resources are abundant, the distribution is widespread, the development and utilization prospect is broad. As an important way of solar energy utilization, solar power generation has been paid more and more attention all over the world. Under the present technical conditions, the utilization of solar energy mainly has two aspects: one is the direct use of the heat energy of the sun, and the winter warm vegetable greenhouse is the simple form of the direct utilization of the heat energy of the sunlight; The second is to make use of the photovoltaic effect of semiconductor materials to generate electricity. This paper mainly discusses the combination of these two solar energy utilization methods. Winter warm vegetable greenhouse is a widely used vegetable planting technology in northern China, especially in Shandong province. Building walls with better insulation properties such as soil, hollow bricks, etc., using plastic film as materials for light transmission, heat preservation, moisture preservation and wind resistance, and making full use of the heat energy emitted by the sun in winter, in harsh conditions such as cold winter weather, etc. In the closed space caused by plastic shed, the heat energy of sunlight is absorbed fully, the temperature in the greenhouse is raised, the damage caused by the outside ice and snow, the low temperature and so on is prevented, and the good growing environment is provided for the vegetable plants in the greenhouse. The principle of distributed solar photovoltaic generation is to make solar photovoltaic cells from specific semiconductor materials, and convert solar energy directly into direct current energy by using photovoltaic effect of photovoltaic cells, and then convert solar energy directly into direct current energy through necessary conversion. Become a power source for different load requirements [2 / 3]. According to the scale and actual conditions of solar photovoltaic power generation system, batteries can be configured as buffers for energy storage, power supply balance and short-term load variation. The direct current generated by solar photovoltaic module can also be converted into alternating current by photovoltaic inverter, and the solar photovoltaic system can be integrated into the power grid by voltage conversion of transformer. The combination of winter warm vegetable greenhouse and distributed photovoltaic power generation can make full use of the remaining space in winter warm vegetable greenhouse area, and ensure the production of vegetables at the same time. In order to utilize land reasonably and efficiently, solar energy can be used to generate electricity by using solar energy in the spare outer space in the greenhouse area, so as to bring into full play the comprehensive benefit. This way can give full play to the space advantage, form a more complete and reasonable solar energy utilization plan, accord with the energy development strategy of our country, and accord with the energy industry policy of Shandong Province. Shandong Province, as a widely used vegetable production place in winter warm greenhouse, has great development space.
【學(xué)位授予單位】:山東大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2014
【分類號(hào)】:S625;TM615

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