| 摘要 |
PROBLEM TO BE SOLVED: To operate a steam turbine at the maximum operating point by always supplying the available maximum steam flow to the steam turbine. SOLUTION: Means 51-53 are arranged which measure steam flow extracted from each stage of a steam turbine middle stage, a set value of a steam turbine inlet steam flow is corrected based on the total value of a correction value by the linear function of the total value of the steam flow and the set value of the steam turbine inlet steam flow, and steam turbine inlet steam flow control means is controlled according to deviation between the corrected set value and the actually measured value of the steam turbine inlet steam flow.
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