Mitsubishi Heavy Industries Limited

Hiroyuki Iba

Masumi Nomura

Kozo Toyama

Tomo Kawakami

An object of the present invention is to provide a gas turbine control device which is capable of performing correction on the basis of a fuel composition of fuel gas to be supplied to a gas turbine, and is capable of changing an amount of correction in response to variation with time of the gas turbine. To attain this, a frequency analyzing unitperforms a frequency analysis of combustion oscillation of a combustor and splits a result of the analysis into respective frequency bands. Then, a state grasping unitchecks an operating state of the gas turbine on the basis of the result of the analysis of the combustion oscillation and process value of the gas turbine, and corrects the checked operating state on the basis of a fuel composition or a heat capacity of fuel gas measured by a fuel characteristic measuring unit. A countermeasure determining unitconducts a countermeasure for controlling an operating action of the gas turbine on the basis of the operating state thus checked.

Gas turbine control device and gas turbine system

A gas turbine control apparatus, etc. are provided by which combustion fluctuation, even if arising in plural frequency bands, can be effectively suppressed. If the combustion fluctuation arises in plural frequency bands, corresponding to a predetermined priority order, adjustment is done so that the combustion fluctuation of the frequency band of a high priority order is suppressed. If the gas turbine state changes after the adjustment, this is reflected on a data base. If no sufficient data is stored yet in the data basefor any the reason, such as immediately after installation of the gas turbine, correction is made using data of countermeasures based on data of another same type gas turbine contained in a basic data base 31 and data of countermeasures based on experiences of skilled adjusting operators contained in a knowledge data base. Also, in a stabilized operation, operation condition may be varied so that an optimal operation condition is automatically searched.

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Takasago, Japan

Hiroyuki Iba