TY - JOUR N2 - An important operational task for thermal turbines during run-up and run-down is to keep the stresses in the structural elements at a right level. This applies not only to their instantaneous values, but also to the impact of them on the engine lifetime. The turbine shaft is a particularly important element. The distribution of stresses depends on geometric characteristics of the shaft and its specific locations. This means a groove manufactured for fixing the rotor blades. The extreme stresses in this place occur during the start-up and the shaft heating to normal operating temperature. The process needs optimisation. Optimization tasks are multidisciplinary issues and can be carried out using different methods. In recent years, particular attention in optimisation has been paid to the use of artificial intelligence methods. Among them, a special role is assigned to genetic algorithms. The paper presents a genetic algorithm method to optimise the steam turbine shaft heating process during its start-up phase. The presented optimization task of this algorithm is to carry out the process of the shaft heating as soon as possible at the conditions of not exceeding the stresses at critical locations at any heating phase. L1 - http://www.czasopisma.pan.pl/Content/118785/PDF/art12.pdf L2 - http://www.czasopisma.pan.pl/Content/118785 PY - 2020 IS - No 4 EP - 268 DO - 10.24425/ather.2020.135863 KW - Genetic algorithms KW - Steam turbines KW - Admissible stress KW - Turbine run-up A1 - Dominiczak, Krzysztof A1 - Drosińska-Komor, Marta A1 - Rzadkowski, Romuald A1 - Głuch, Jerzy PB - The Committee of Thermodynamics and Combustion of the Polish Academy of Sciences and The Institute of Fluid-Flow Machinery Polish Academy of Sciences VL - vol. 41 DA - 2020.12.30 T1 - Optimisation of turbine shaft heating process under steam turbine run-up conditions SP - 255 UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/118785 T2 - Archives of Thermodynamics ER -