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首页> 外文会议>ASME Power Conference 2005: Includes Papers from the 2005 International Conference on Power Engineering(ICOPE) pt.A >THE LOW LOAD CHARACTERISTIC AND ENERGY-SAVING OPTIMIZING CONTROL OF LARGE CAPACITY POWER PLANT
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THE LOW LOAD CHARACTERISTIC AND ENERGY-SAVING OPTIMIZING CONTROL OF LARGE CAPACITY POWER PLANT

机译：大型电厂的低负荷特性及节能优化控制

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摘要

The variable load operation of the large capacity power plant and the variable working condition calculation of thermodynamic system are important subject for research in thermodynamic engineering field all the time. When the current operation point of the power plant is far away from the rated mode, it is very important to analyze the thermo-economy of thermodynamic system and offer appropriate operation guidance in engineering practices. Based on the steam turbine's variable working condition theory, this paper reveals the inherent characteristic of power plant under off-design condition. From the viewpoint of systematic engineering, according with thermodynamic system topological structure and system thermodynamic properties, the state model of thermo-economy has been studied and set up. Combining the optimization theory and the analytic equation of the heat consumption rate, the optimum operational main steam pressure setpoint has been offered to advanced control strategy. Thus the further intellectual optimum control can be put into practice, and the unit can meet the demand for safe and economical operation within the wider range of load.
机译：大容量电厂的变负荷运行和热力系统的变工况计算一直是热力工程领域研究的重要课题。当电厂的当前运行点远离额定模式时，分析热力系统的热经济性并为工程实践提供适当的运行指导非常重要。基于汽轮机可变工况理论，揭示了非设计工况下电厂的固有特性。从系统工程的角度，根据热力学系统的拓扑结构和系统热力学性质，研究并建立了热经济状态模型。结合优化理论和热耗率解析方程，将最佳运行主蒸汽压力设定值提供给高级控制策略。因此，进一步的智能优化控制可以付诸实践，并且该单元可以在更宽的负载范围内满足安全经济运行的需求。

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