Steam turbine power plant and method for activating steam turbine power plant

• Main Authors: Yashiki, Tatsuro, Suzuki, Fumiyuki, Yoshida, Takuya, Katagiri, Yukinori, Yamanaka, Kazunori, Yoshida, Yasuhiro, Kim, Eunkyeong, Nomura, Kenichiro, Kawata, Miyuki, Iyanaga, Norihiro
• Format: Patent
• Language: English; French; German
• Published: 06.06.2018
• Subjects: ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDEDFOR ELSEWHERE; BLASTING; CHECKING-DEVICES; ENGINE PLANTS IN GENERAL; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES; GENERATING RANDOM NUMBERS; HEATING; INDEXING SCHEME FOR ASPECTS RELATING TONON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES ORJET-PROPULSION PLANTS; INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUSSUBCLASSES OF CLASSES F01-F04; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; METHODS OF STEAM GENERATION; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES; PHYSICS; REGISTERING OR INDICATING THE WORKING OF MACHINES; STEAM ACCUMULATORS; STEAM BOILERS; STEAM ENGINE PLANTS; STEAM ENGINES; STEAM GENERATION; TIME OR ATTENDANCE REGISTERS; VOTING OR LOTTERY APPARATUS; WEAPONS

Providing a steam turbine power plant 100; 101; 102 that can be safely activated at a high speed while maintaining thermal stress at a level equal to or lower than a limit in consideration of operational results of the plant, and a method for activating the steam turbine power plant 100; 101; 102. The steam turbine power plant includes a life consumption amount calculator 22 configured to calculate life consumption amounts of a turbine rotor based on a value measured by a measurer 11, 12, 13 a life consumption amount storage device 23, a thermal stress limit update timing determining device 24 configured to determine a time when thermal stress limits are updated, an accumulated life consumption amount calculator 25 configured to calculate accumulated life consumption amounts 51 of the turbine rotor when the thermal stress limits are updated, a planned life consumption amount setting device 26 configured to set planned life consumption amounts 52; 55 of the turbine rotor based on the accumulated life consumption amounts 51 of the turbine rotor, a thermal stress limit calculator 27 configured to calculate and update the thermal stress limits based on the planned life consumption amounts 52; 55 of the turbine rotor, and a plant command value calculator 28 configured to calculate a plant command value based on the thermal stress limits.