發(fā)布時間：2018-06-05 06:00

  本文選題：超臨界機組 + 熱經(jīng)濟性��； 參考：《華北電力大學》2014年碩士論文

【摘要】：在國家提出“節(jié)能減排”政策和頒布新修訂的GB13223-2011《火電廠大氣污染物排放標準》這一排放標準異常嚴格的背景下,在現(xiàn)有相當高效的超臨界發(fā)電機組能耗和排放水平上,結合電網(wǎng)的負荷變化和電廠熱力設備的實際運行狀況,找出其中節(jié)能降耗潛力較大的部分進行全面深入的分析研究,得到機組熱經(jīng)濟性最優(yōu)的運行方式和運行參數(shù)基準值,從而達到節(jié)能的目的,并從另一方面也為減少污染物排放量和滿足新的污染物排放標準做出一份貢獻。本文以目前已成為國內火力發(fā)電主力的600MW超臨界凝汽式濕冷機組為目標電廠,在充分研究汽輪機側的熱力系統(tǒng)變工況特性基礎上,建立其變工況的物理模型和數(shù)學模型,以汽輪機負荷、大氣條件為原始變量計算得出熱力系統(tǒng)在機組變工況時某一工況的重要熱力參數(shù)。將已知的熱力參數(shù)代入汽輪發(fā)電機組特定的熱耗率計算模型,利用MATLAB的優(yōu)化程序,計算出在汽輪機不同運行方式下,汽輪發(fā)電機組特定熱耗率最低時的最優(yōu)運行參數(shù),經(jīng)過對理論上無限多個的工況點進行比較,得出某一工況下機組最佳的運行方式和運行參數(shù),然后通過曲線擬合,得到在不同的汽輪機負荷和典型季節(jié)的大氣參數(shù)條件下汽輪機發(fā)電機組的最優(yōu)運行方式。
[Abstract]:Under the background of the "energy saving and emission reduction" policy proposed by the state and the promulgation of the newly revised GB13223-2011 Emission Standard for Atmospheric pollutants in Thermal Power plants, under the background of unusually strict emission standards, the energy consumption and emission level of the existing supercritical generating units are quite efficient. Combined with the load change of the power network and the actual operation condition of the thermal equipment in the power plant, we find out the part with great potential for energy saving and consumption reduction for comprehensive and in-depth analysis and study, and obtain the optimal operation mode and the operating parameter reference value of the unit thermal economy. In order to achieve the purpose of energy conservation, and on the other hand, to reduce the emissions of pollutants and meet the new emission standards of pollutants to make a contribution. In this paper, the 600MW supercritical condensing type wet cooling unit, which has become the main force of domestic thermal power generation at present, is taken as the target power plant. On the basis of fully studying the characteristics of the thermodynamic system on the steam turbine side, the physical and mathematical models of the variable working condition are established. Taking turbine load and atmospheric condition as original variables, the important thermodynamic parameters of the thermodynamic system under a certain working condition are obtained. The known thermodynamic parameters are substituted into the specific heat consumption rate calculation model of the turbine generator set, and the optimal operating parameters of the turbine generator set with the lowest specific heat consumption rate under different operation modes of the turbine are calculated by using the optimization program of MATLAB. Through the comparison of infinite number of operating points in theory, the optimal operation mode and operating parameters of the unit under a certain working condition are obtained, and then the curve fitting is carried out. The optimal operation mode of steam turbine generator is obtained under the conditions of different turbine loads and atmospheric parameters of typical seasons.
【學位授予單位】：華北電力大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM621

【參考文獻】

相關期刊論文 前10條

1 徐傳海;;表面式凝汽器的分區(qū)計算[J];電站輔機;2005年04期

2 楊軍虎，，侯yN華;火電廠鍋爐給水泵優(yōu)化運行的數(shù)學模型[J];甘肅工業(yè)大學學報;1999年02期

3 趙偉光;陳顯輝;羅碧星;;國產(chǎn)超(超)臨界汽輪機的發(fā)展及經(jīng)濟性評估[J];東北電力技術;2012年04期

4 陳國年,鐘史明;電廠熱力系統(tǒng)矩陣計算法[J];汽輪機技術;1991年05期

5 胡洪華;驅動給水泵用汽輪機效率的測量方法[J];汽輪機技術;2003年02期

6 徐躍芹,屠珊,黃文江,李慧君;火電廠自然通風冷卻塔性能研究[J];汽輪機技術;2005年05期

7 范鑫;秦建明;付晨鵬;李明;;超臨界600MW汽輪機滑壓優(yōu)化運行的試驗研究[J];汽輪機技術;2011年02期

8 李慧君;高麗莎;;火力發(fā)電廠加熱器端差應達值的確定[J];汽輪機技術;2012年02期

9 嚴俊杰,李秀云,劉繼平,邢秦安,陳國慧,林萬超;抽汽壓損運行標準值定量方法研究[J];熱力發(fā)電;2000年02期

10 胡冰,張仲民,武永運,張安祥,于會群,莊水祥,張建軍,杜智武;應用BP神經(jīng)網(wǎng)絡確定汽輪機組滑壓運行的最優(yōu)初壓[J];熱力發(fā)電;2003年07期

相關博士學位論文 前1條

1 趙寧;汽輪機變工況下流量與壓比關系及熱力參數(shù)應達值研究[D];華北電力大學（河北）;2008年

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