太阳能辅助燃煤发电系统经济性分析
|
摘要
以某670 MW超临界火电机组在100%THA下的设计参数为基准,针对槽式太阳能集热场与燃煤机组回热系统三种方案进行了经济性分析,并比较了拉萨、银川和北京的太阳辐射强度及集热场导热油出口温度对太阳能发电成本的影响。结果表明:随着导热油出口温度的增加,太阳能发电成本先增大后减小;三种方案均提高了机组的输出功率及热经济性,太阳能集热场与1号高压加热器并联方案的发电成本最低、经济性最好、实用性最强。
Based on the design parameters of a 670 MW supercritical coal-fired power unit under 100%THA operating condition,an economic analysis was conducted on three schemes for the connection between solar collector and heat recovery system of the coal-fired power unit,while the factors influencing the levelized energy cost(LEC)of solar power generation were comparatively analyzed,such as the solar radiation intensity in Lhasa,Yinchuan and Beijing,as well as the outlet temperature of heat transfer oil in the solar collector,etc.Results show that the LEC increases firstly and then decreases with the rise of outlet temperature of heat transfer oil;besides,all the three schemes can improve the power output and thermal economy of the unit,among which,the scheme of solar collector in parallel connection with No.1 high pressure heater is the most economical and practicable one,due to its lowest LEC.
Based on the design parameters of a 670 MW supercritical coal-fired power unit under 100%THA operating condition,an economic analysis was conducted on three schemes for the connection between solar collector and heat recovery system of the coal-fired power unit,while the factors influencing the levelized energy cost(LEC)of solar power generation were comparatively analyzed,such as the solar radiation intensity in Lhasa,Yinchuan and Beijing,as well as the outlet temperature of heat transfer oil in the solar collector,etc.Results show that the LEC increases firstly and then decreases with the rise of outlet temperature of heat transfer oil;besides,all the three schemes can improve the power output and thermal economy of the unit,among which,the scheme of solar collector in parallel connection with No.1 high pressure heater is the most economical and practicable one,due to its lowest LEC.
引文
[1]李爱军.我国燃煤发电技术进步的节能减排效果分析[J].能源技术经济,2010,22(11):44-48,57.
[2]崔映红,杨勇平,张明智.太阳能煤炭互补的发电系统与互补方式[J].中国电机工程学报,2008,28(5):102-107.
[3]ZOSCHAK R J,WU S F.Studies of the direct input of solar energy to a fossil-fueled central station steam power plant[J].Solar Energy,1975,17(5):297-305.
[4]YANG Y P,CUI Y H,HOU H J,et al.Research on solar aided coal-fired power generation system and performance analysis[J].Science in China Series E:Technological Sciences,2008,51(8):1211-1221.
[5]HU E,YANG Y P,NISHIMURA A,et al.Solar thermal aided power generation[J].Applied Energy,2010,87(9):2881-2885.
[6]YAN Q,YANG Y P,NISHIMURA A,et al.Multi-point and multi-level solar integration into a conventional coal-fired power plant[J].Energy&Fuels,2010,24(7):3733-3738.
[7]YANG Y P,YAN Q,ZHAI R R,et al.An efficient way to use medium-or-low temperature solar heat for power generation-integration into conventional power plant[J].Applied Thermal Engineering,2011,31(2-3):157-162.
[8]HOU H J,YANG Y P,HU E,et al.Evaluation of solar aided biomass power generation systems with parabolic trough field[J].Science China Technological Sciences,2011,54(6):1455-1461.
[9]侯宏娟,王梦娇,杨勇平.太阳能辅助燃煤发电系统性能的方法分析[J].中国电机工程学报,2015,35(1):119-125.
[10]LI Y H,WANG X P.Theoretical calculation and economic assessment of the integrated solar combined cycle power plants[J].International Journal of Green Energy,2015,12(3):192-197.
[11]NEZAMMAHALLEH H,FARHADI F,TANHAEMAMI M.Conceptual design and techno-economic assessment of integrated solar combined cycle system with DSG technology[J].Solar Energy,2010,84(9):1696-1705.
[12]章熙民,任泽霈,梅飞鸣.传热学[M].北京:中国建筑工业出版社,2007:295.
[13]付立,樊雪,侯宏娟,等.槽式太阳能辅助燃煤发电系统热性能研究[J].动力工程学报,2016,36(8):645-650.
[14]HE Y L,XIAO J,CHENG Z D,et al.A MCRT and FVM coupled simulation method for energy conversion process in parabolic trough solar collector[J].Renewable Energy,2011,36(3):976-985.
[15]朱芳,邴旖旎,王军,等.槽式太阳能与火电机组联合系统的经济性分析[J].太阳能学报,2017,38(1):287-292.
[16]杨勇平,崔映红,侯宏娟,等.太阳能辅助燃煤一体化热发电系统研究与经济性分析[J].中国科学E辑(技术科学),2009,39(4):673-679.
[17]毛剑.太阳能辅助燃煤机组发电系统性能研究及技术经济评价[D].北京:华北电力大学,2015.
[2]崔映红,杨勇平,张明智.太阳能煤炭互补的发电系统与互补方式[J].中国电机工程学报,2008,28(5):102-107.
[3]ZOSCHAK R J,WU S F.Studies of the direct input of solar energy to a fossil-fueled central station steam power plant[J].Solar Energy,1975,17(5):297-305.
[4]YANG Y P,CUI Y H,HOU H J,et al.Research on solar aided coal-fired power generation system and performance analysis[J].Science in China Series E:Technological Sciences,2008,51(8):1211-1221.
[5]HU E,YANG Y P,NISHIMURA A,et al.Solar thermal aided power generation[J].Applied Energy,2010,87(9):2881-2885.
[6]YAN Q,YANG Y P,NISHIMURA A,et al.Multi-point and multi-level solar integration into a conventional coal-fired power plant[J].Energy&Fuels,2010,24(7):3733-3738.
[7]YANG Y P,YAN Q,ZHAI R R,et al.An efficient way to use medium-or-low temperature solar heat for power generation-integration into conventional power plant[J].Applied Thermal Engineering,2011,31(2-3):157-162.
[8]HOU H J,YANG Y P,HU E,et al.Evaluation of solar aided biomass power generation systems with parabolic trough field[J].Science China Technological Sciences,2011,54(6):1455-1461.
[9]侯宏娟,王梦娇,杨勇平.太阳能辅助燃煤发电系统性能的方法分析[J].中国电机工程学报,2015,35(1):119-125.
[10]LI Y H,WANG X P.Theoretical calculation and economic assessment of the integrated solar combined cycle power plants[J].International Journal of Green Energy,2015,12(3):192-197.
[11]NEZAMMAHALLEH H,FARHADI F,TANHAEMAMI M.Conceptual design and techno-economic assessment of integrated solar combined cycle system with DSG technology[J].Solar Energy,2010,84(9):1696-1705.
[12]章熙民,任泽霈,梅飞鸣.传热学[M].北京:中国建筑工业出版社,2007:295.
[13]付立,樊雪,侯宏娟,等.槽式太阳能辅助燃煤发电系统热性能研究[J].动力工程学报,2016,36(8):645-650.
[14]HE Y L,XIAO J,CHENG Z D,et al.A MCRT and FVM coupled simulation method for energy conversion process in parabolic trough solar collector[J].Renewable Energy,2011,36(3):976-985.
[15]朱芳,邴旖旎,王军,等.槽式太阳能与火电机组联合系统的经济性分析[J].太阳能学报,2017,38(1):287-292.
[16]杨勇平,崔映红,侯宏娟,等.太阳能辅助燃煤一体化热发电系统研究与经济性分析[J].中国科学E辑(技术科学),2009,39(4):673-679.
[17]毛剑.太阳能辅助燃煤机组发电系统性能研究及技术经济评价[D].北京:华北电力大学,2015.