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基于SIMULNK的单轴重型燃气轮机建模与仿真研究 总被引:1,自引:0,他引:1
通过面向对象的模块化建模方法,在MATLAB/SIMULINK软件中建立了燃气轮机部件模块库,并进行了燃气轮机系统变工况仿真研究。为了提高仿真精度,本文采用变比热容的计算方法,并考虑气体组分的变化对整个系统模型的影响,建立了一种考虑容积惯性和转动惯性的、非线性的单轴重型燃气轮机实时动态仿真模型。仿真结果表明,该模型设计合理、结构清晰,可应用于重型燃气轮机控制系统的研制和测试,并具有很好的通用性和扩展性。 相似文献
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用模块化建模的思想建立了注蒸汽燃气轮机系统的动态模型,考虑了对燃气轮机系统影响较大的转动惯性、容积惯性及蒸汽发生系统的热惯性,各部件模型具有较好的通用性.利用MATLAB软件对注蒸汽燃气轮机进行了性能仿真,系统运行特性表明,由于蒸汽的注入,燃气轮机的效率有较大提高,燃气温度大幅度降低,对延长燃机涡轮的使用寿命及抑制舰船的红外辐射是十分有利的. 相似文献
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利用MATALB软件对注蒸汽燃气轮机工况间的过渡过程进行仿真计算。在建模过程中采用了模块化建模的思想,考虑了对燃气轮机系统影响较大的转动惯性、容积惯性及蒸汽发生系统的热惯性,模型具有较好的通用性。研究注蒸汽燃气轮机在加速(减速)过渡过程的供油规律,分析了3种不同供油规律对燃机系统的影响,得到了较适合的供油规律,能够为燃气轮机控制系统的设计和优化提供一定参考。 相似文献
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采用模块化建模方法建立了燃气轮机系统仿真模型,定量分析了冷却抽气对压气机转速、排烟温度、排烟流量和发电量的影响,分析结果表明冷却抽气对排烟温度的影响最小,对排烟流量和压气机转速的影响较大,对发电量仿真结果的影响最大。针对不同仿真目标,给出了燃气轮机冷却抽气模型选择方案。 相似文献
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燃-燃联合动力装置(COGAG)以其功率密度大、机动性好等优势,在船舶动力领域展现了很好的发展前景。对燃-燃联合动力装置的部件进行了模块化建模,为提高模型的计算效率和收敛性,对传统的牛顿拉普森(Newton Rapson)迭代法进行改进,建立了COGAG稳态模型。利用四阶龙格库塔法建立动态模型,在python仿真环境下对建模方法进行了仿真验证。仿真结果表明:提出的基于改进牛顿法的燃-燃联合动力装置的建模方法可以实现系统的稳态和动态运行过程,提高了模型稳态计算的收敛速度,为联合动力装置的响应特性研究和控制器的设计提供了模型基础。 相似文献
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带中间冷却和回热的燃气轮机动态性能的研究 总被引:2,自引:0,他引:2
对某舰用燃气轮机进行了中间冷却和回热(ICR)的改造设计,采用按比例缩小压气机的方法,使改造设计后的燃气轮机各部件性能达到了良好的匹配.依照模块化建模的原理,建立了换热器等部件模块,在此基础上,在EASY 5仿真平台上搭建了ICR燃气轮机的系统模型,并对其进行了稳态和动态的仿真试验计算.结论认为,舰用燃气轮机改造为ICR燃气轮机,需要重新设计压气机以平衡由于中间冷却器造成的高压压气机入口折合流量降低的影响;ICR燃气轮机具有较高的效率和良好的变工况性能.图5表1参5 相似文献
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本文编制了问冷循环燃气轮机热力循环计算软件,在已知热力循环计算条件和热力循环过程参数下,用户可以用该软件计算得到间冷循环燃气轮机的总体性能参数,并做了海水温度变化、机上中间冷却器间冷度变化、机外中间冷却器间冷度变化、乙二醇水溶液流量变化、大气温度变化对问冷循环燃气轮机的影响分析,在此基础上,运用改进的粒子群优化算法又分别编制了以循环效率最优为目标、以输出功率最优为目标及两者最优为目标的优化软件,并得到了达到优化目标时所应取得热力循环过程参数值,从而为实际间冷循环燃气轮机设计、运行和性能优化提供技术参考。 相似文献
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基于一种新的优化方法的水平轴风力机风轮设计软件 总被引:2,自引:0,他引:2
提出了一种用于水平轴风机风轮设计的软件。该软件的主要目的是为风力机设计者提供一种灵活的集成设计环境,其核心是一个水平轴风机的气动优化过程。该过程基于一种改进的叶素理论,它采用一个有限叶片的旋涡系,因此叶片数量的影响被考虑进行并可得到更精确的气动力。 相似文献
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Design characteristics and performance of a pressurized solid oxide fuel cell (SOFC) hybrid system using a fixed gas turbine (GT) design are analyzed. The gas turbine is assumed to exist prior to the hybrid system design and all the other components such as the SOFC module and auxiliary parts are assumed to be newly designed for the hybrid system. The off-design operation of the GT is modeled by the performance characteristics of the compressor and the turbine. In the SOFC module, internal reforming with anode gas recirculation is adopted. Variations of both the hybrid system performance and operating condition of the gas turbine with the design temperature of the SOFC were investigated. Special focus is directed on the shift of the gas turbine operating points from the original points. It is found that pressure loss at the fuel cell module and other components, located between the compressor and the turbine, shifts the operating point. This results in a decrease of the turbine inlet temperature at each compressor operating condition relative to the original temperature for the GT only system. Thus, it is difficult to obtain the original GT power. Two cell voltage cases and various degrees of temperature difference at the cell are considered and their influences on the system design characteristics and performance are comparatively analyzed. 相似文献
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为了满足多学科、多层次的船用燃气轮机仿真分析需求,运用分布式集成仿真和多软件协同仿真的方法,对燃气轮机总体性能集成仿真平台进行设计研究。使用C#语言在.Net平台上对仿真平台应用层进行开发,以商用仿真软件与Sql Server数据库为支撑层,使用web服务协议和改进的多软件协同仿真接口作为通讯层以及由服务器、计算节点和网络设备组成的设备层,这四个层次组成了平台的体系结构。基于MVC(Model View Controller)框架和B/S(Browser/Server)架构,设计了平台的运行框架。平台能够实现网络环境下的燃气轮机高效率高精度的性能分析。通过间冷燃气轮机装置在发电负载下变工况分布式集成仿真方案,初步验证了平台体系框架的合理性和有效性。 相似文献
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Solar gas turbine systems: Design, cost and perspectives 总被引:2,自引:0,他引:2
Peter Schwarzbzl Reiner Buck Chemi Sugarmen Arik Ring Ma Jesús Marcos Crespo Peter Altwegg Juan Enrile 《Solar Energy》2006,80(10):1231-1240
The combination of high solar shares with high conversion efficiencies is one of the major advantages of solar gas turbine systems compared to other solar-fossil hybrid power plants. Pressurized air receivers are used in solar tower plants to heat the compressed air in the gas turbine to temperatures up to 1000 °C. Therefore solar shares in the design case of 40% up to 90% can be realized and annual solar shares up to 30% can be achieved in base load. Using modern gas turbine systems in recuperation or combined cycle mode leads to conversion efficiencies of the solar heat from around 40% up to more than 50%. This is an important step towards cost reduction of solar thermal power. Together with the advantages of hybrid power plants—variable solar share, fully dispatchable power, 24 h operation without storage—solar gas turbine systems are expected to have a high potential for market introduction in the mid term view.In this paper the design and performance assessment of several prototype plants in the power levels of 1 MW, 5 MW and 15 MW are presented. Advanced software tools are used for design optimization and performance prediction of the solar tower gas turbine power plants. Detailed cost assumptions for the solarized gas turbine, the solar tower plant and further equipment as well as for operation and maintenance are presented. Intensive performance and economic analysis of the prototype plants for different locations and capacity factors are shown. The cost reduction potential through automation and remote operation is revealed. 相似文献
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《Energy》2004,29(8):1183-1205
This paper presents the engineering design and theoretical exergetic analyses of the plant for combustion gas turbine based power generation systems. Exergy analysis is performed based on the first and second laws of thermodynamics for power generation systems. The results show the exergy analyses for a steam cycle system predict the plant efficiency more precisely. The plant efficiency for partial load operation is lower than full load operation. Increasing the pinch points will decrease the combined cycle plant efficiency. The engineering design is based on inlet air-cooling and natural gas preheating for increasing the net power output and efficiency. To evaluate the energy utilization, one combined cycle unit and one cogeneration system, consisting of gas turbine generators, heat recovery steam generators, one steam turbine generator with steam extracted for process have been analyzed. The analytical results are used for engineering design and component selection. 相似文献
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