CONTROLLING APPARATUS AND STARTING METHOD
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United States of America Patent
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Jul 2, 2015
app pub date -
Dec 18, 2014
filing date -
Dec 26, 2013
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Abstract
According to one embodiment, a controlling apparatus is a controlling apparatus for a combined cycle power-generating plant having a plurality of power-generating plants, each of the power-generating plants comprising: a power generator; a gas turbine that is connected with the power generator; and an heat recovering steam generator that recovers heat of exhaust gas from the gas turbine and generates steam from an incorporated drum. The controlling apparatus comprises a controlling unit that controls the turbine bypass regulating valve. The controlling unit closes the turbine bypass regulating valve in accordance with a predetermined time-dependent change, before the controlling valve is in a full open state. The controlling unit controls the turbine bypass regulating valve based on a pressure of the drum of the power-generating plant subsequently started, when the controlling valve is in the full open state.
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