This article expounds the advantages and three schemes of applying combined cycle to the modernized retrofit of old thermal power plants. Through analyzing and comparing technical economics of these three schemes, it ...This article expounds the advantages and three schemes of applying combined cycle to the modernized retrofit of old thermal power plants. Through analyzing and comparing technical economics of these three schemes, it is concluded that to use feedwater heating and heat recovery steam generator (HRSG) is suitable for the units with unit capacity below 100 MW, while to use exhaust gas reburning is suitable for units with unit capacity of 125 MW, 200 MW and above.展开更多
为了弥补国内对燃气-蒸汽联合循环电厂(Combined Cycle Power Plant,CCPP)中机组动态模型研究的不足,解决常用的电力系统仿真软件不提供CCPP仿真模型的问题,针对国内9F级重型CCPP机组所具有的不补燃余热锅炉、单轴型结构、滑压运行等特...为了弥补国内对燃气-蒸汽联合循环电厂(Combined Cycle Power Plant,CCPP)中机组动态模型研究的不足,解决常用的电力系统仿真软件不提供CCPP仿真模型的问题,针对国内9F级重型CCPP机组所具有的不补燃余热锅炉、单轴型结构、滑压运行等特点,研究并建立了CCPP机组的实时数字仿真模型。首先在Matlab/Simulink环境下建立了非实时数字仿真模型,然后将其转换为C语言代码,并利用CBuilder工具将其封装为可以实时运行的仿真模型。最后,在RTDS上对模型进行了仿真测试,并与现场实测结果进行了对比验证。仿真结果表明,所建立的CCPP机组模型在计算效率和模型精确性等方面均能满足电力系统的实时仿真要求。展开更多
文摘This article expounds the advantages and three schemes of applying combined cycle to the modernized retrofit of old thermal power plants. Through analyzing and comparing technical economics of these three schemes, it is concluded that to use feedwater heating and heat recovery steam generator (HRSG) is suitable for the units with unit capacity below 100 MW, while to use exhaust gas reburning is suitable for units with unit capacity of 125 MW, 200 MW and above.
文摘为了弥补国内对燃气-蒸汽联合循环电厂(Combined Cycle Power Plant,CCPP)中机组动态模型研究的不足,解决常用的电力系统仿真软件不提供CCPP仿真模型的问题,针对国内9F级重型CCPP机组所具有的不补燃余热锅炉、单轴型结构、滑压运行等特点,研究并建立了CCPP机组的实时数字仿真模型。首先在Matlab/Simulink环境下建立了非实时数字仿真模型,然后将其转换为C语言代码,并利用CBuilder工具将其封装为可以实时运行的仿真模型。最后,在RTDS上对模型进行了仿真测试,并与现场实测结果进行了对比验证。仿真结果表明,所建立的CCPP机组模型在计算效率和模型精确性等方面均能满足电力系统的实时仿真要求。
