Nian-su Hu

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The on-line optimal control of operation is difficult to achieve with routine optimization methods because of the nonlinear thermal system and the changing frequently conditions in start-up, stop and load change of the large-scale thermal power plant. Based on the research of three typical evolution optimization methods which are evolution strategies,(More)
X-ray photoelectron spectroscopy was used to investigate the characteristics and evolution of sulfur (S) in mixtures of bituminous coal and sewage sludge (SS) and their chars during isothermal combustion. Five groups of mixtures with SS content of 0%, 10%, 20%, 30% and 100%, were examined at different burn-off ratios (beta) of 0, 30%, 50%, 70% and 100%. The(More)
Take a domestically-made imported 600MW subcritical steam turbine unit as an example to carry on the research on steam governing performance of the regulation valve, get the bending stress ratio of the 1st stage blades and turbine’s imbalance steam force by calculating, and then confirm the operating safety of the unit under different steam governing(More)
Using different governing modes in the process of large steam turbine load variations will make the thermal characteristic and force of unit get complicated, especially affect the thermal characteristic and force change of the control stage notability the most. This article researched the governing mode problems of the domestic-type 600MW steam turbine,(More)
In order to optimize the performance of the steam turbine unit performance monitoring system, improve the reliability, stability and accuracy of the system, a new idea to establish target value surface and coal consumption growth surface in different load is presented. Take an imported supercritical steam turbine unit, which capacity is 600MW, as an example(More)
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