| 摘要 |
PURPOSE:To enable to perform a safe operation of a composite generating plant, by a method wherein, in a subject plant provided with a gas turbine and a steam turbine, a regulating valve of a steam turbine is controlled by means of a steam pressure deviation, deviation of the number of revolutions, and a load limit signal. CONSTITUTION:A composite generating plant is provided with a gas turbine and a steam turbine. Based on a pressure set value 22 and an actual steam pressure 21, an operating signal 26 for a bypass valve is computed. A regulating valve operating signal 27 is selected from 3 factors of a regulating valve control signal 38 by deviation of the number of revolutions and a load limit signal 36 in addition to a steam pressure deviation 26. This enables to hold a steam pressure in a stabilizing manner, and permits the steady and safe operation of the composite generating plant. |
