| 摘要 |
A control device of a steam turbine of a combined cycle plant includes an acquisition module (13), for acquiring measures of operative quantities (Q HP1 , Q HP2 , P HP ) of a combined cycle plant (1) including a steam turbine (5) and a first and second steam feeding systems (100, 101). The device further includes a plurality of calculation modules (47-56, 47'-56'), configured for determining, according to corresponding control modes: a pressure set point (P HPCV ) for a high-pressure inlet valve (25); a pressure set point (P IPCV ) for an intermediate-pressure inlet valve (30) of the steam turbine (5); and pressure set points (P HPBP1 , P HPBP2 , P IPBP1 , P IPBP2 ) for high-pressure bypass valves (28a, 28b) and intermediate-pressure bypass valves (33a, 33b). Furthermore, a supervisor module (45) is configured to detect an operating condition of the plant (1) on the basis of operative quantities (Q HP1 , Q HP2 , P HP ) acquired by the acquisition module (13) and selectively activate one of the calculation modules (47-56, 47'-56') in response to the detected operating condition. |
