多能耦合的冷热电联供系统策略分析和优化设计
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摘要
建立了光伏、光热和天然气耦合利用的冷热电联供系统,研究了系统运行策略、燃气轮机控制策略和太阳能利用策略对系统总体性能的影响规律,并综合考虑经济性、节能性、环保性的系统性能评价指标,优化了系统容量配置和运行参数。研究表明:系统在热跟随、燃气轮机变负荷运行、太阳能光伏光热一体化利用条件下总体性能最优;特定用户负荷下,系统存在最优设备容量和电制冷比,在热跟随模式下最优开关系数值比较小,避免了频繁启停。
Energy conservation and environmental friendliness. Multi-energy coupling CCHP system is the efficient path to utilize the renewable energy. Based on the coupling utilization of solar energy and natural gas,multi-energy coupling CCHP system was developed. The system economy,environmental protection and energy saving are the goals of the system optimization and design. The key devices' capacities and operating parameters were optimized. And the operation strategy,control strategy of the gas turbine,and the utilization strategy of solar energy were analyzed. The results showed that the performance of the system was the best when the system operation following the thermal loads( FTL),the gas turbine working in variable load operation and the photovoltaic/thermal solar technologies were applied. In a specific user load,there were optimal capacity and electric chiller ratio. The optimal switching coefficient was small with the operation following the thermal loads. In that condition,the frequent stops and starts of gas turbine could be avoided.
Energy conservation and environmental friendliness. Multi-energy coupling CCHP system is the efficient path to utilize the renewable energy. Based on the coupling utilization of solar energy and natural gas,multi-energy coupling CCHP system was developed. The system economy,environmental protection and energy saving are the goals of the system optimization and design. The key devices' capacities and operating parameters were optimized. And the operation strategy,control strategy of the gas turbine,and the utilization strategy of solar energy were analyzed. The results showed that the performance of the system was the best when the system operation following the thermal loads( FTL),the gas turbine working in variable load operation and the photovoltaic/thermal solar technologies were applied. In a specific user load,there were optimal capacity and electric chiller ratio. The optimal switching coefficient was small with the operation following the thermal loads. In that condition,the frequent stops and starts of gas turbine could be avoided.
引文
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[2]明梦君,张涛,王锐,等.混合可再生能源系统多目标优化综述[J].中国电机工程学报,2018(10):9.MING Meng-jun,ZHANG Tao,WANG Rui,et al.Review of multiobjective optimization for hybrid renewable energy system[J].Proceedings of CSEE,2018(10):9.
[3]WANG J,LU Y,YANG Y,et al.Thermodynamic performance analysis and optimization of a solar-assisted combined cooling,heating and power system[J].Energy,2016,115:49-59.
[4]GüRLICH D,DALIBARD A,EICKER U.Photovoltaic-thermal hybrid collector performance for direct trigeneration in a European building retrofit case study[J].Energy and Buildings,2017,152:701-717.
[5]熊焰,吴杰康,王强,等.风光气储互补发电的冷热电联供优化协调模型及求解方法[J].中国电机工程学报,2015,35(14):3616-3625.XIONG Yan,WU Jie-kang,WANG Qiang,et al.An optimization coordination model and solution for combined cooling heating and electric power system with complimentary generation of wind,PV,gas and energy storage[J].Proceedings of the CSEE,2015,35(14):3616-3625.
[6]WANG J,YANG Y.Energy,exergy and environmental analysis of a hybrid combined cooling heating and power system utilizing biomass and solar energy[J].Energy Conversion and Management,2016,124:566-577.
[7]MOALEMAN A,KASAEIAN A,ARAMESH M,et al.Simulation of the performance of a solar concentrating photovoltaic-thermal collector,applied in a combined cooling heating and power generation system[J].Energy Conversion and Management,2018,160:191-208.
[8]王江江,杨颖.基于太阳能利用的天然气冷热电联供系统热力性能研究[J].热能动力工程,2017,32(5):111-117.WANG Jiang-jiang,YANG Ying.Thermodynamic performance analysis of a combined cooling heating and power system driven by natural gas and based on solar energy[J].Journal of Engineering for Thermal Energy and Power,2017,32(5):111-117.
[9]陈跃华.基于智能方法的熔融碳酸盐燃料电池/微型燃气轮机联合发电系统的建模与控制研究[D].上海:上海交通大学,2006.CHEN Yue-hua.Modeling and control of a combined molten carbonate fuel cell/micro gas turbine power generation system based on an intelligent approach[D].Shanghai:Shanghai Jiaotong University,2006.
[10]WANG W,CAI R,ZHANG N.General characteristics of single shaft microturbine set at variable speed operation and its optimization[J].Applied Thermal Engineering,2004,24(13):1851-1863.
[11]吴红斌,王东旭,刘星月.太阳能冷热电联供系统的策略评估和优化配置[J].电力系统自动化,2015,39(21):46-51.WU Hong-bin,WANG Dong-xu,LIU Xing-yue.Strategies evaluation and optimal allocation of combined cooling heating and power system with solar[J].Automation of Electric Power System,2015,39(21):46-51.
[12]YOUSEFI H,GHODUSINEJAD M H,KASAEIAN A.Multi-objective optimal component sizing of a hybrid ICE+PV/T driven CCHP microgrid[J].Applied Thermal Engineering,2017,122:126-138.
[13]荆有印,白鹤,张建良.太阳能冷热电联供系统的多目标优化设计与运行策略分析[J].中国电机工程学报,2012(20):82-87.JING You-yin,BAI He,ZHANG Jian-liang.Multi-objective optimization design and operation strategy analysis of a solar combined cooling heating and power system[J].Proceeding of the CSEE,2012(20):82-87.
[14]JOSHI S S,DHOBLE A S.Photovoltaic-Thermal systems(PVT):Technology review and future trends[J].Renewable and Sustainable Energy Reviews,2018,92:848-882.
[15]RAMOS A,CHATZOPOULOU M A,GUARRACINO I,et al.Hybrid photovoltaic-thermal solar systems for combined heating,cooling and power provision in the urban environment[J].Energy Conversion and Management,2017,150:838-850.
[16]高威,王玉璋,翁一武.微型燃机冷热电三联供系统优化设计[J].科学技术与工程,2014(9):54-58.GAO Wei,WANG Yu-zhang,WENG Yi-wu.Optimization design of micro-turbine CCHP systems[J].Science Technology and Engineering,2014(9):54-58.
[17]WANG J,ZHAI Z J,JING Y,et al.Optimization design of BCHPsystem to maximize to save energy and reduce environmental impact[J].Energy,2010,35(8):3388-3398.