壓縮空氣蓄能—聯(lián)合循環(huán)系統(tǒng)性能分析及優(yōu)化
發(fā)布時(shí)間：2018-11-13 13:36
【摘要】：二十世紀(jì)七十年代以來(lái),兩大問(wèn)題逐漸成為全世界能源行業(yè)的焦點(diǎn)。一是能源短缺危機(jī)愈加嚴(yán)重,人們迫切需要尋求提高能源利用效率的方法；二是電網(wǎng)調(diào)峰問(wèn)題日益突出,電力系統(tǒng)的安全性無(wú)法得到保障。隨著氣候變化和全球變暖的問(wèn)題日益加劇,加之油價(jià)上漲的現(xiàn)狀和政府的支持,可再生能源的發(fā)展和商業(yè)化成為大勢(shì)所趨。使用大規(guī)模儲(chǔ)能技術(shù),能夠有效解決風(fēng)能和太陽(yáng)能存在的不穩(wěn)定、間歇性強(qiáng)的問(wèn)題,對(duì)于可再生能源入網(wǎng)意義重大。 壓縮空氣蓄能(CAES)系統(tǒng)是一種新型大規(guī)模儲(chǔ)能系統(tǒng),可用于電站快速持續(xù)調(diào)峰,同時(shí)也是解決風(fēng)能等可再生能源不穩(wěn)定性的一種重要手段。文本以德國(guó)Huntorf電站CAES系統(tǒng)為基礎(chǔ)案例,利用Aspen Plus軟件對(duì)其進(jìn)行了流程模擬,并分析了該電站CAES系統(tǒng)效率較低的原因。在此基礎(chǔ)上,提出了兩種CAES改進(jìn)系統(tǒng),即引入了回?zé)嵫b置以及引入吸收式制冷裝置。改進(jìn)系統(tǒng)分別從壓縮階段和發(fā)電階段對(duì)原CAES系統(tǒng)進(jìn)行廢棄能量的再利用,有效提高了系統(tǒng)效率,降低了能量的損耗。 此外,本文還提出了一種“壓縮空氣蓄能-聯(lián)合循環(huán)”的新系統(tǒng)。該系統(tǒng)在第一代CAES系統(tǒng)的基礎(chǔ)上,利用余熱鍋爐將CAES與蒸汽輪機(jī)循環(huán)相結(jié)合,形成一個(gè)全新的聯(lián)合循環(huán)系統(tǒng)。論文基于案例研究,對(duì)新系統(tǒng)進(jìn)行了流程模擬和熱力學(xué)分析。結(jié)果表明：相比于無(wú)聯(lián)合循環(huán)的典型第一代CAES系統(tǒng),新系統(tǒng)有效利用了燃?xì)馔钙降母邷嘏艢?系統(tǒng)電耗與熱耗分別降低了0.13kWh/kWh和0.34kWh/kWh,系統(tǒng)效率提高了10個(gè)百分點(diǎn)；此外,新系統(tǒng)還利用壓縮空氣階段產(chǎn)生的間冷熱,保持汽輪機(jī)處于熱備用狀態(tài),大幅提高了整個(gè)系統(tǒng)的靈活性。論文研究為如何提高CAES系統(tǒng)效率提供了新的途徑,在CAES與其他發(fā)電方式相結(jié)合方面給出了新的思路。
[Abstract]:Since the 1970 s, two major problems have gradually become the focus of the world energy industry. First, the crisis of energy shortage is becoming more serious, people urgently need to find ways to improve the efficiency of energy use; second, the problem of peak-shaving is becoming more and more prominent, and the security of power system cannot be guaranteed. With the increasing problem of climate change and global warming, as well as the current situation of rising oil prices and government support, the development and commercialization of renewable energy has become a general trend. The use of large-scale energy storage technology can effectively solve the unstable and intermittent problem of wind and solar energy, which is of great significance for renewable energy access to the network. Compressed air energy storage (CAES) system is a new type of large-scale energy storage system, which can be used to rapidly and continuously adjust the peak of power plants, and is also an important means to solve the instability of renewable energy such as wind energy. This paper takes the CAES system of Huntorf power station in Germany as a case, simulates its flow by using Aspen Plus software, and analyzes the reasons for the low efficiency of CAES system in this power station. On the basis of this, two kinds of improved CAES systems are put forward, that is, the regenerative device and the absorption refrigeration system are introduced. The improved system reuses the waste energy of the original CAES system from the compression stage and the generation stage respectively, which effectively improves the system efficiency and reduces the energy loss. In addition, a new system of compressed air energy storage combined cycle is proposed. On the basis of the first generation CAES system, the CAES and steam turbine cycle are combined with the waste heat boiler to form a new combined cycle system. Based on the case study, the flow simulation and thermodynamic analysis of the new system are carried out. The results show that compared with the typical first-generation CAES system without combined cycle, the new system effectively utilizes the high temperature exhaust of the gas turbine, and the power consumption and heat consumption of the system are reduced by 0.13kWh/kWh and 0.34 KW / kWh. respectively. System efficiency increased by 10 percentage points; In addition, the new system makes use of the interspace heat and cold produced by the compressed air stage to keep the steam turbine in a hot standby state, which greatly improves the flexibility of the whole system. This paper provides a new way to improve the efficiency of CAES system and gives a new way to combine CAES with other power generation methods.
【學(xué)位授予單位】：華北電力大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM611.3
本文編號(hào)：2329269
[Abstract]:Since the 1970 s, two major problems have gradually become the focus of the world energy industry. First, the crisis of energy shortage is becoming more serious, people urgently need to find ways to improve the efficiency of energy use; second, the problem of peak-shaving is becoming more and more prominent, and the security of power system cannot be guaranteed. With the increasing problem of climate change and global warming, as well as the current situation of rising oil prices and government support, the development and commercialization of renewable energy has become a general trend. The use of large-scale energy storage technology can effectively solve the unstable and intermittent problem of wind and solar energy, which is of great significance for renewable energy access to the network. Compressed air energy storage (CAES) system is a new type of large-scale energy storage system, which can be used to rapidly and continuously adjust the peak of power plants, and is also an important means to solve the instability of renewable energy such as wind energy. This paper takes the CAES system of Huntorf power station in Germany as a case, simulates its flow by using Aspen Plus software, and analyzes the reasons for the low efficiency of CAES system in this power station. On the basis of this, two kinds of improved CAES systems are put forward, that is, the regenerative device and the absorption refrigeration system are introduced. The improved system reuses the waste energy of the original CAES system from the compression stage and the generation stage respectively, which effectively improves the system efficiency and reduces the energy loss. In addition, a new system of compressed air energy storage combined cycle is proposed. On the basis of the first generation CAES system, the CAES and steam turbine cycle are combined with the waste heat boiler to form a new combined cycle system. Based on the case study, the flow simulation and thermodynamic analysis of the new system are carried out. The results show that compared with the typical first-generation CAES system without combined cycle, the new system effectively utilizes the high temperature exhaust of the gas turbine, and the power consumption and heat consumption of the system are reduced by 0.13kWh/kWh and 0.34 KW / kWh. respectively. System efficiency increased by 10 percentage points; In addition, the new system makes use of the interspace heat and cold produced by the compressed air stage to keep the steam turbine in a hot standby state, which greatly improves the flexibility of the whole system. This paper provides a new way to improve the efficiency of CAES system and gives a new way to combine CAES with other power generation methods.
【學(xué)位授予單位】：華北電力大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM611.3
【參考文獻(xiàn)】
相關(guān)期刊論文 前3條
1 陳海生;;壓縮空氣儲(chǔ)能技術(shù)的特點(diǎn)與發(fā)展趨勢(shì)[J];高科技與產(chǎn)業(yè)化;2011年06期
2 陶芒;;壓縮空氣蓄能電站的比較優(yōu)勢(shì)和市場(chǎng)前景[J];今日科技;2006年11期
3 徐玉杰;陳海生;劉佳;譚春青;;風(fēng)光互補(bǔ)的壓縮空氣儲(chǔ)能與發(fā)電一體化系統(tǒng)特性分析[J];中國(guó)電機(jī)工程學(xué)報(bào);2012年20期
，本文編號(hào)：2329269
本文鏈接：http://sikaile.net/kejilunwen/dianlilw/2329269.html
最近更新
教材專著
