太阳能与燃气-蒸汽联合循环发电系统优化
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摘要
针对华能南山电厂菲涅尔式太阳能与燃气-蒸汽联合循环发电(ISCC)系统中,太阳能集热场产生的过热蒸汽引入汽轮机低压段做功所导致的能量损失问题,提出了在太阳能集热场设置蓄热系统,以保证集热场出口过热蒸汽参数的稳定,并将过热蒸汽引入汽轮机的中压段做功。分析结果表明:与原始系统相比,ISCC改进系统太阳能发电功率提高了0.189 MW,光电转换效率提高了7%,系统热效率提高了0.15%,系统等效节气量提高了39.69m3/h,系统热力性能明显提高。
Integrated solar combined cycle(ISCC)is the integration of solar energy and gas-steam combined cycle power generation.It is an effective way of solar thermal utilization.The integration scheme of Huaneng ISCC experiment platform at Hainan Nanshan is injecting the heat generated by Fresnel solar collector field to the low pressure segment of turbine for power generation.This paper presents an improved ISCC integration scheme,which is injecting the heat generated by solar collector field to the medium pressure segment of turbine and setting thermal storage system to ensure the stability of the collector field output.The results show that,the improved integration scheme can effectively enhance the solar energy output by 0.189 MW,the solar-electric conversion efficiency by 0.15%,and the equivalent natural gas savings by39.69m3/h.The system economy is dramatically improved.
Integrated solar combined cycle(ISCC)is the integration of solar energy and gas-steam combined cycle power generation.It is an effective way of solar thermal utilization.The integration scheme of Huaneng ISCC experiment platform at Hainan Nanshan is injecting the heat generated by Fresnel solar collector field to the low pressure segment of turbine for power generation.This paper presents an improved ISCC integration scheme,which is injecting the heat generated by solar collector field to the medium pressure segment of turbine and setting thermal storage system to ensure the stability of the collector field output.The results show that,the improved integration scheme can effectively enhance the solar energy output by 0.189 MW,the solar-electric conversion efficiency by 0.15%,and the equivalent natural gas savings by39.69m3/h.The system economy is dramatically improved.
引文
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[2]张传强,洪慧,金红光.聚光式太阳能热发电技术发展状况[J].热力发电,2010,39(12):5-9.ZHANG Chuanqiang,HONG Hui,JIN Hongguang.Development situation of power generation technology using heat of light-concentrating solar energy[J].Thermal Power Generation,2010,39(12):5-9.
[3]郑建涛,裴杰.我国聚光型太阳能热发电技术发展现状[J].热力发电,2011,40(2):8-9.Zheng Jiantao,Pei Jie.Status quo of developing power generation technology by using heat of light-concentrating solar energy in China[J].Thermal Power Generation,2011,40(2):8-9.
[4]曹传钊,郑建涛,刘明义,等.塔式太阳能热发电技术的发展[J].可再生能源,2013,31(12):21-25.CAO Chuanzhao,ZHENG Jiantao,LIU Mingyi,et al.The development of solar power tower technology[J].Renewable Energy Resource,2013,31(12):21-25.
[5]李启明,郑建涛,徐海卫,等.线性菲涅尔式太阳能热发电技术发展概况[J].太阳能,2012(7):43-47.LI Qiming,ZHENG Jiantao,XU Haiwei,et al.Development of linear Fresnel solar thermal electricity[J].Solar Energy,2012(7):43-47.
[6]MORIN G,DERSCH J,PLATZER W,et al.Comparison of linear Fresnel and parabolic trough collector power plants[J].Solar Energy,2012,86(1):1-12.
[7]HU E,YANG Y,NISHIMURA A,et al.Solar thermal aided power generation[J].Applied Energy,2010,87(9):2881-2885.
[8]崔映红,陈娟,杨阳,等.太阳能辅助燃煤热发电系统性能研究[J].中国电机工程学报,2009,29(23):92-98.CUI Yinghong,CHEN Juan,YANG Yang,et al.Performance research on solar aided coal-fired electricity generation system[J].Proceedings of the CSEE,2009,29(23):92-98.
[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.HOU Hongjuan,WANG Mengjiao,YANG Yongping.Exergy evaluation of solar aided coal-fired power generation system[J].Proceedings of the CSEE,2015,35(1):119-125.
[10]BEHAR O,KHELLAF A,MOHAMMEDI K,et al.Areview of integrated solar combined cycle system(ISCCS)with a parabolic trough technology[J].Renewable and Sustainable Energy Reviews,2014,39:223-250.
[11]林汝谋,韩巍,金红光,等.太阳能互补的联合循环(ISCC)发电系统[J].燃气轮机技术,2013,26(2):1-15.LIN Rumou,HAN Wei,JIN Hongguang,et al.The integrated solar combined cycle power generation system[J].Gas Turbine Technology,2013,26(2):1-15.
[12]李元媛,袁晶,杨勇平.太阳能燃气联合循环系统集成优化研究[J].工程热物理学报,2014,35(12):2348-2352.LI Yuanyuan,YUAN Jing,YANG Yongping.Optimization study for integrated solar combined cycle system[J].Journal of Engineering Thermophysics,2014,35(12):2348-2352.
[13]郑建涛,徐越,许世森.太阳能-燃气联合循环发电技术[J].热力发电,2014,43(8):24-28.ZHENG Jiantao,XU Yue,XU Shisen.An overview of integrated solar combined cycle technology[J].Thermal Power Generation,2014,43(8):24-28.
[14]刘冠杰,左钧,郑建涛,等.菲涅尔式太阳能集热系统性能研究[J].热力发电,2014,43(1):66-68.LIU Guanjie,ZUO Jun,ZHENG Jiantao,et al.Performance study on linear Fresnel solar thermal system[J].Thermal Power Generation,2014,43(1):66-68.
[15]朱勇.太阳能辅助燃煤系统性能评价与运行模式研究[D].北京:华北电力大学,2013:33.ZHU Yong.research of performance evaluation and operating mode on solar aided coal-fired power generation system[D].Beijing:North China Electric Power University,2013:33.