共查询到19条相似文献,搜索用时 187 毫秒
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供热机组热经济性分析通用软件的开发 总被引:2,自引:0,他引:2
利用模块化建模思想,基于“循环函数法”分析和计算原理,对热力系统典型加热单元和辅助汽水循环形式进行更为全面划分,建立热力系统模块数据库,结合热电联产机组选型的工程实际,开发了界面友好,使用方便,组态灵活,可扩展性强的供热机组热经济性分析通用软件。该软件对热电机组的选型、设计及优化具有较高的工程实用价值。 相似文献
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根据MC(MasterCycle)系统的框架结构,设计了基于MC的1000MW、700℃超超临界燃煤发电机组热力系统,确定了相关的热力参数,同时设计了基于常规热力系统结构的对比系统.将这2个热力系统划分为锅炉、汽轮机、发电机、凝汽器和管道共5个单元,采用炯分析法计算了各单元的炯损、焖损系数和焖效率指标.结果表明:采用MC系统机组的热经济性比常规热力系统机组的热经济性高,主要体现在MC系统机组中汽轮机系统的热经济性较高,尤其是MC系统机组中汽轮机系统的中压缸、第3~6级加热器具有更高的热经济性. 相似文献
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核电机组二回路热力系统是核电站热经济性的集中体现,对核电机组二回路热力系统进行热力性能计算与分析是核电机组设计和运行中的重要课题。以某典型AP1000机组为例,基于Eclipse开发平台,运用Java语言开发出AP1000核电机组二回路主要设备及系统的离线性能计算与分析软件。通过该软件不仅能够快速直接地完成案例机组在设计工况和变工况下详细的热力计算分析,还可对机组主要热力参数变化时各项性能指标的变化进行快速计算;同时还可建立案例机组的性能档案列表与参数变化图。 相似文献
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针对热力系统中单个设备加热器的热经济性影响的规律和影响因素进行分析.以引进型600MW机组的热力系统为例确定其数量的大小,为正确、合理组成热系统的设备,指导设备的正确运行和维护提供理论依据,使热系统设备的作用和效果得以充分发挥,其潜力获得有效利用. 相似文献
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火电机组热力系统通用计算软件包 总被引:2,自引:0,他引:2
目前火电机组的热力系统日趋复杂,为提高机组运行经济性所必须的热力系统热系统性分析计算亦趋于繁复,传统的人工分析计算已经不能满足实际工程需要。鉴于此,作者设计了开发了“火电机组热力系统通用计算软件包”,使用结果表明:该软件包具有的准确性和满意的计算速度,组态方式较灵活,操作简单明了特点,基本上达到了预期的设计目标。 相似文献
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300MW火电机组热经济性实时模型的研究 总被引:1,自引:0,他引:1
以300MW火电机组热力系统为研究对象,根据系统特点,在循环函数的基础上结合等效焓降方法,采用模块化建模思想,建立了火电机组热经济性分析的实时模型。经过实例验证:该模型不仅很好地运用于机组热经济性实时分析,而且对于机组改造和设计的定性分析具有一定的指导意义。 相似文献
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The development stages in the output control of distributed generation (DG) for network power flow management are illustrated. The first stage requires an assessment of the location of thermally vulnerable components within the distribution network. This is achieved through the offline calculation of thermal vulnerability factors that relate component power flow sensitivity factors to component thermal limits. This directly informs Stage 2 - the installation of meteorological stations and component temperature monitoring equipment for network thermal characterisation. In Stage 3, steady-state component rating models are populated with real-time environmental information from the meteorological stations to generate component real-time thermal ratings. In Stage 4, the power flow sensitivity factors calculated in Stage 1 are embedded within a network power flow management system which, together with the component real-time thermal ratings calculated in Stage 3, is used to control the power output of DG schemes. 相似文献
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王云茂 《电网与水力发电进展》2008,24(3):18-21
为了便于变电站综合自动化系统检验,研制了基于虚拟仪器技术的变电站综合自动化系统测试仪。该仪器主要由人机接口模块、主控模块和功率源模块组成。人机接口软件利用LabVIEW虚拟仪器编程语言作为开发平台,主控模块采用TI公司的TMS320LF2407为主处理器,功率源模块采用美国模拟器件公司的新一代高性能600MHz处理器Blackfin533,每周波拟合的波形点数高达30000点,波形保真度高,几乎无谐波分量,输出无需低通滤波器,从而具有很好的暂态特性、相频特性、幅频特性。该仪器功能齐全,集成度高,利用一台仪器就能实现变电站综合自动化系统的同期功能测试、遥测精度校验以及系统性能指标测试等功能。 相似文献
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Solid oxide fuel cell (SOFC) stacks are at the core of complex and efficient energy conversion systems for distributed power generation. Such systems are currently in various stages of development. These power plants of the future feature complicated configurations, because the fuel cell demands for a complex balance of plant. Moreover, proposed SOFC-based systems for stationary applications are often connected to additional components and subsystems, such as a gasifier with its gas-cleaning section, a gas turbine, and a heat recovery system for thermal cogeneration or additional power production. For the simplest SOFC configurations, and more so for complex integrated systems, the dynamic operation of the power plant is challenging, especially because the fluctuating electrical load of distributed energy systems demand for reliable transient operation. Issues related to dynamic operation must be studied in the early design stage and simulation results can be used to optimize the system configuration, taking into account transient behavior. This paper presents the development and the validation of a non-linear dynamic lumped-parameters model of a SOFC stack suitable for integration into models of complex power plants. Particular emphasis is placed on the systematic approach to model development. The model is implemented using the open-source Modelica language, which allows for a high degree of flexibility and modularity, the main features of the model herein presented. The SOFC stack model will be incorporated into ThermoPower, a freely distributed library of reusable software components for the modeling of thermo-hydraulic processes and power plants. 相似文献