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A DYNAMIC MODEL OF THE TURBINE CYCLE OF A POWER PLANT FOR STARTUP (SIMULATION).

机译:电厂启动(仿真)汽轮机动态模型。

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摘要

A dynamic model of the turbine cycle of a power plant is developed for the study of power plant startup. The model scope is limited to the turbine and feedwater heating systems. Detailed models of heat exchangers are developed that include the effects of energy and mass storage, heat transfer, flooding, incondensable gases and reverse flows. A detailed steam turbine model computes turbine flows based on steam properties and characterized turbine losses. The model is validated with power plant data from startup to fully loaded conditions. Analysis is performed using the model to determine the steady state effects of bypassing feedwater heaters and the transient effects of closing the turbine extractions.; Model validation indicates that the model predicts feedwater heater operation within 10% throughout the load range. The model predicts turbine flows to within 2% at high load levels and 20% at zero load (startup). Steady state analysis indicates that the effects of bypassing individual feedwater heaters are small. Transient analysis indicates that turbine power increases quickly (about 4%) when a high pressure extraction is suddenly closed.
机译:开发了电厂涡轮机循环的动态模型,用于研究电厂启动。模型范围仅限于涡轮机和给水加热系统。开发了详细的热交换器模型,其中包括能量和质量存储,传热,溢流,不凝性气体和逆流的影响。详细的蒸汽轮机模型可根据蒸汽特性和特征化的涡轮机损耗来计算涡轮机流量。使用从启动到满负荷条件的电厂数据对模型进行验证。使用该模型进行分析,以确定旁路给水加热器的稳态影响和关闭涡轮机抽气的瞬时影响。模型验证表明,该模型预测整个负载范围内给水加热器的运行在10%以内。该模型预测,在高负载水平下,涡轮流量将在2%以内,在零负载(启动)下,涡轮流量将在20%以内。稳态分析表明,绕过单个给水加热器的影响很小。瞬态分析表明,当高压抽气突然关闭时,涡轮机功率会迅速增加(约4%)。

著录项

  • 作者

    DOBBINS, KELVIN LEE.;

  • 作者单位

    The University of Texas at Austin.;

  • 授予单位 The University of Texas at Austin.;
  • 学科 Engineering Mechanical.
  • 学位 Ph.D.
  • 年度 1985
  • 页码 600 p.
  • 总页数 600
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 机械、仪表工业;
  • 关键词

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