| 摘要 |
<p>The method involves operating at least one steam turbine actuating valve on a restricted basis along a working steam supply line to at least one pressure stage of the steam turbine (8) so as to provide a steady-state steam turbine reserve power (20). The steam turbine actuating valve is changed to a less restricted state if a network frequency decreases so as to require network frequency support. The method involves operating at least one steam turbine actuating valve on a restricted basis along a working steam supply line to at least one pressure stage e.g. high-pressure stage (1), of the steam turbine (8) so as to provide a steady-state steam turbine reserve power (20). The steam turbine actuating valve is changed to a less restricted state if a network frequency decreases so as to require network frequency support. The method further involves detecting a frequency discrepancy between an actual frequency and a frequency nominal value (15), such that the actual frequency is dependent on a rotation speed (14) of at least one shaft (5) connected to the gas turbine (7), determining a primary regulation nominal power (22) based on the frequency discrepancy, determining a power discrepancy between the primary regulation nominal power and a calculated primary regulation gas turbine actual power (43) emitted from the gas turbine, determining a primary regulation steam turbine nominal power (19) based on the power discrepancy, and positioning one of the steam turbine actuating valves such that a steam turbine actual power emitted from the steam turbine corresponds to the primary regulation steam turbine nominal power.</p> |
