Turbine Control System Based on Prediction of Rotor Thermal Stress

Matsumoto, Tadahiko; Satô,; Kato, Ryu; Eki,; Hisano,; Fukushima,

doi:10.1109/mper.1982.5519734

Cited by 2 publications

(4 citation statements)

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“…Thermal stress modelling is important due to the number of start-ups and shut-downs that can be expected during the life of a plant. Discussion of the thermal stress calculations has been described in references [9] to [11].…”

Section: Thermal Stress and Its Compressive And Tensile Strainsmentioning

confidence: 99%

“…Following recent changes in UK policies, particularly privatization of the power generation and supply industry, CCPP is taking a primary role and is replacing traditional coal-fuelled power plants [11]. As CCPP becomes more established, the role played by the older fossil-®red plant will depend greatly on how they can compete in terms of e ciency and operational exibility.…”

Section: Operational Aspects Of Ccpp Start-upmentioning

confidence: 99%

“…The model thus plays a crucial role within the control strategy. The developed model, which is based on that used in reference [11], is essentially an autoregressive model relating shaft temperature as input and stress at the rotor surface as output. The model is derived as follows: it is necessary for the model to accommodate the load and variation in temperature, noting that, during the start-up phase, the load is either held constant or increased.…”

Section: Model-based Supervisory Controlmentioning

confidence: 99%

“…Fig 11. Illustration of the membership functions on the universe of discourse for thermal stress and thermal stress rate…”

mentioning

confidence: 99%

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A fuzzy logic approach to accommodate thermal stress and improve the start-up phase in combined cycle power plants

Boulos

Burnham

2002

Proceedings of the Institution of Mechanical Engineers, Part B:

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Use of combined cycle power generation plant has increased dramatically over the last decade. A supervisory control approach based on a dynamic model is developed, which makes use of proportional-integral-derivative (PID), fuzzy logic and fuzzy PID schemes. The aim is to minimize the steam turbine plant start-up time, without violating maximum thermal stress limits. An existing start-up schedule provides the benchmark by which the performance of candidate controllers is assessed. Improvements regarding possible reduced start-up times and satisfaction of maximum thermal stress restrictions have been realized using the proposed control scheme.

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Section: Thermal Stress and Its Compressive And Tensile Strainsmentioning

confidence: 99%

Section: Operational Aspects Of Ccpp Start-upmentioning

confidence: 99%

Section: Model-based Supervisory Controlmentioning

confidence: 99%

“…Fig 11. Illustration of the membership functions on the universe of discourse for thermal stress and thermal stress rate…”

mentioning

confidence: 99%

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