| 摘要 |
<p>A control device of a steam turbine of a combined cycle plant includes an acquisition module (13), for acquiring measures of operative quantities (QHP1, QHP2, PHP) 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 (PHPCV) for a high-pressure inlet valve (25); a pressure set point (PIPCV) for an intermediate-pressure inlet valve (30) of the steam turbine (5); and pressure set points (PHPBP1, PHPBP2, PIPBP1, PIPBP2) 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 (QHP1, QHP2, PHP) 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.
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