Anticipative turbine control

Details Anticipative turbine control Anticipative turbine control

1975-02-13

1980-01-01

Rubinson, Gene Z.

Prime-mover dynamo plants

Electric control

Engine control

60646, 415 17, F01D 1902

Patent

active

041818407

ABSTRACT:
Present speed and present steam temperature are utilized in accordance with a mathematical model to evaluate present steam to turbine heat transfer and turbine heat propagation quantities, and present turbine rotor and casing surface and volume average temperatures. The model is corrected for inaccuracy based on comparison of calculated rotor to casing differential expansion with measured values, and is exercised once more with anticipated speed and steam temperature quantities to develop anticipated rotor to casing differential expansion and anticipated rotor stress. These quantities are compared with various predetermined limits to determine whether the present and anticipated speed and acceleration are within allowable limits.

REFERENCES:
patent: 3446224 (1969-05-01), Zwicky, Jr.
patent: 3928972 (1975-12-01), Osborne
patent: 3934128 (1976-01-01), Uram
patent: 4053746 (1977-10-01), Braytenbah et al.

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