Steam turbine control system and method

Details Steam turbine control system and method Steam turbine control system and method

F - Mech Eng,Light,Heat,Weapons

01

K

341/12, 341/38.1

F01K 7/16 (2006.01) F01D 19/00 (2006.01) G05D 7/06 (2006.01)

Patent

CA 1071735

STEAM TURBINE CONTROL SYSTEM AND METHOD Abstract of the Disclosure In a steam turbine-generator with provision for determining a load demand signal in accordance with a load reference signal, the valve opening for each admission mode (full-arc and partial-arc) is determined in accordance with the load demand signal. Provision is made for adjusting the ratio between the valve openings under the two admission modes in accordance with a load change, the ratio of steam flow under each admission mode being controlled in accordance with the load change so as to minimize the thermal stresses and reduce the turbine load changing time.

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