Thermal Strength of Steam Turbine Shut-Off and Control Valves Body

Шульженко, Н. Г.; Kolyadyuk, A. S.

doi:10.1007/s11223-022-00355-w

Strength Mater

2021

DOI: 10.1007/s11223-022-00355-w

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Thermal Strength of Steam Turbine Shut-Off and Control Valves Body

Н. Г. Шульженко

A. S. Kolyadyuk²

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2023

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Multi-Objective Optimization of Economy, Safety and Emissions for the Startup Scheduling of a Steam Turbine

Chen

et al. 2023

Journal of Engineering for Gas Turbines and Power

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With the rapid development of renewable energy, traditional power generation such as combined cycle set needs to start-up or change load quickly to balance the variability brought by renewable resources. In the combined cycle set, the start-up of steam turbine has a great influence on the whole set, and it's necessary to ensure safety, shorten the start-up time and reduce pollutant emissions. These optimization objectives are interrelated and have complex contradiction, which is the difficulty for multi-objective optimization. Costs function consisting of start-up costs, fatigue life damage costs, pollutant emissions costs and revenue gained from electricity is proposed to balance the contradiction more objectively. Finite Exhaustive Method combining thermal-structural finite element calculation and multi-objective optimization is proposed for multi-objective start-up process optimization, and its results are compared with those of minimum start-up time and minimum fatigue life damage optimization. It can automatically search for a unique global optimal solution for engineering practice, rather than solution sets obtained by Pareto Optimality, which is beneficial for application in different combined cycle steam turbines and start-up process. Multi-objective optimization scheduling shortens start-up time from 105 to 93 minutes, reduces maximum stress from 493MPa to 440MPa, and reduces costs function by 66.6%. The comparison with the multi-objective optimization results of the Response Surface Method proves the reliability and validity of this method. The practical inspection results prove that the optimal scheduling is safe and effective.

show abstract

Multi-Objective Optimization of Economy, Safety and Emissions for the Startup Scheduling of a Steam Turbine

Chen

et al. 2023

Journal of Engineering for Gas Turbines and Power

View full text Add to dashboard Cite

show abstract

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Thermal Strength of Steam Turbine Shut-Off and Control Valves Body

Cited by 1 publication

References 4 publications

Multi-Objective Optimization of Economy, Safety and Emissions for the Startup Scheduling of a Steam Turbine

Multi-Objective Optimization of Economy, Safety and Emissions for the Startup Scheduling of a Steam Turbine

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