風(fēng)氫耦合系統(tǒng)容量配比及能量管理策略研究
本文選題:風(fēng)氫耦合系統(tǒng) + 區(qū)間擬合; 參考:《東北電力大學(xué)》2017年碩士論文
【摘要】:風(fēng)電作為目前開發(fā)和應(yīng)用較為廣泛的可再生能源之一,其發(fā)展速度較為迅速。風(fēng)電富集地區(qū)由于電網(wǎng)建設(shè)水平和風(fēng)電不確定性等因素的影響,使風(fēng)電消納問題日益突出,棄風(fēng)問題也越來越嚴(yán)重,利用風(fēng)電制氫是消納風(fēng)電和利用棄風(fēng)的有效途徑之一。本文在分析風(fēng)氫耦合系統(tǒng)結(jié)構(gòu)和各部分運(yùn)行特性基礎(chǔ)上,建立系統(tǒng)各單元等效數(shù)學(xué)模型,通過對(duì)風(fēng)電富集地區(qū)風(fēng)電場(chǎng)和風(fēng)電場(chǎng)群年棄風(fēng)電力的統(tǒng)計(jì)分析,運(yùn)用區(qū)間擬合方法構(gòu)建了反映棄風(fēng)電力不確定性的制氫系統(tǒng)最優(yōu)容量配置模型,并采用多屬性決策方法制定電解槽配置方案;分析電解槽電耗量、氫氣市場(chǎng)價(jià)格以及棄風(fēng)利用率和風(fēng)電機(jī)組年利用小時(shí)數(shù)對(duì)容量配置的影響,分別以裝機(jī)容量為30MW風(fēng)電場(chǎng)和100MW風(fēng)電場(chǎng)群為例進(jìn)行對(duì)比分析,驗(yàn)證了所提模型和方法的有效性。在風(fēng)氫耦合系統(tǒng)的能量管理方面,針對(duì)風(fēng)氫耦合系統(tǒng)運(yùn)行特點(diǎn),借鑒能源中心(Energy Hub,EH)建模方法,構(gòu)建了資源中心(Resource Hub,RH)模型,從不同時(shí)間尺度優(yōu)化系統(tǒng)能量管理。在日前時(shí)間尺度下,以風(fēng)氫耦合系統(tǒng)運(yùn)行經(jīng)濟(jì)性最優(yōu)為目標(biāo),考慮風(fēng)電功率的不確定性、供氫需求及氫儲(chǔ)等約束,構(gòu)建風(fēng)氫耦合系統(tǒng)日前調(diào)度的線性規(guī)劃模型;在實(shí)時(shí)時(shí)間尺度下,建立以電解槽開關(guān)操作和運(yùn)行狀態(tài)為變量的0-1整數(shù)規(guī)劃模型,配合超級(jí)電容器實(shí)現(xiàn)平抑風(fēng)電功率波動(dòng),以30MW風(fēng)電場(chǎng)為例驗(yàn)證了所提方法的有效性。通過對(duì)風(fēng)電富集地區(qū)風(fēng)電場(chǎng)配置制氫系統(tǒng)最優(yōu)容量的計(jì)算分析,制氫系統(tǒng)容量配置具有明顯的規(guī)模效應(yīng),即棄風(fēng)量越大制氫系統(tǒng)消納風(fēng)電的效果越明顯,其經(jīng)濟(jì)效益和環(huán)境效益越高。運(yùn)用日前調(diào)度優(yōu)化模型,可在滿足風(fēng)氫耦合系統(tǒng)供氫需求的前提下,通過合理安排燃料電池出力使其在一定程度降低風(fēng)電場(chǎng)并網(wǎng)功率的不確定性;在實(shí)時(shí)時(shí)間尺度下,通過優(yōu)化電解槽開關(guān)操作和超級(jí)電容器充放電功率,在滿足電解槽開關(guān)動(dòng)作次數(shù)和運(yùn)行時(shí)間的前提下,實(shí)現(xiàn)了對(duì)實(shí)時(shí)時(shí)間尺度下風(fēng)電功率波動(dòng)的平抑。
[Abstract]:Wind power, as one of the most widely used renewable energy sources, is developing rapidly. Due to the influence of factors such as power grid construction level and wind power uncertainty, the problem of wind power absorption is increasingly prominent and the problem of wind rejection is becoming more and more serious in the area of wind power enrichment. The use of wind power to produce hydrogen is one of the effective ways to absorb wind power and make use of abandoned wind. Based on the analysis of the structure of the wind and hydrogen coupling system and the operation characteristics of each part, the equivalent mathematical model of each unit of the system is established, and the statistical analysis of the wind farm and wind farm group in the area of wind power enrichment is carried out. The optimal capacity allocation model of hydrogen production system reflecting the uncertainty of abandoned wind power is constructed by using interval fitting method, and the configuration scheme of electrolytic cell is established by using multi-attribute decision method, and the power consumption of electrolytic cell is analyzed. The effects of the market price of hydrogen, the utilization ratio of abandoned wind and the number of hours of annual utilization of wind turbine on capacity allocation are compared and analyzed respectively, taking the installed capacity of 30 MW wind farm and 100 MW wind farm as examples, the validity of the proposed model and method is verified. In the aspect of energy management of air-hydrogen coupling system, according to the operational characteristics of air-hydrogen coupling system, a Resource Center Resource Hub-RH (RH) model is constructed to optimize the energy management of the system at different time scales, based on the energy center energy Hub-EH modeling method. Under the pre-day time scale, the linear programming model of the air-hydrogen coupling system pre-day scheduling is constructed by considering the uncertainty of wind power, the demand for hydrogen supply and the constraints of hydrogen storage, aiming at the optimal operation economy of the air-hydrogen coupling system. In the real-time scale, a 0-1 integer programming model based on the switching operation and operating state of the electrolytic cell is established, and the wind power fluctuation is suppressed by supercapacitors. The effectiveness of the proposed method is verified by an example of a 30MW wind farm. Through the calculation and analysis of the optimal capacity of the wind farm configuration hydrogen production system in the area of wind power enrichment, the capacity configuration of the hydrogen production system has obvious scale effect, that is, the larger the abandoned air volume, the more obvious the wind power absorption effect of the hydrogen production system is. Its economic benefit and environmental benefit are higher. By using the pre-day scheduling optimization model, under the premise of satisfying the demand for hydrogen supply in the air-hydrogen coupling system, it can reduce the uncertainty of the grid power of the wind farm to a certain extent by reasonably arranging the output of the fuel cell, and in the real-time scale, By optimizing the switching operation of the electrolytic cell and the charging and discharging power of the supercapacitor, the fluctuation of the wind power under the real-time scale can be controlled under the premise of satisfying the operation times and the running time of the electrolytic cell switch.
【學(xué)位授予單位】:東北電力大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2017
【分類號(hào)】:TM614;TM73
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