Turbine mechanical output computation device and gas turbine control device equipped therewith
AssigneeMitsubishi Heavy Industries, Ltd.
InventorFuminori Fujii
Life of this patent
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Abstract
A turbine mechanical output computation device computes a gas turbine mechanical output P from the following equation P = Pe + J × g × ( 2 π 60 ) 2 × N × ⅆ N ⅆ t where Pe represents a generator effective power measured by a generator effective power wattmeter, N represents the rotational speed of a gas turbine measured by a gas turbine tachometer, J represents the moment of inertia of the gas turbine, and g represents gravitational acceleration. A combustion air amount controller controls the amount of combustion air based on the gas turbine mechanical output P.
Claims2
A turbine mechanical output computation device for computing a mechanical output of a turbine for rotationally driving a generator,
- said turbine mechanical output computation device being adapted to compute said mechanical output of said turbine from the following equation
- P
- =
- Pe
- +
- J
- ×
- g
- ×
- (
- 2
-
- π
- 60
- )
- 2
- ×
- N
- ×
- ⅆ
- N
- ⅆ
- t
- where Pe represents an output of said generator measured by generator output measuring means, N represents a rotational speed of said turbine measured by turbine rotational speed measuring means, J represents a moment of inertia of said turbine, g represents gravitational acceleration, and dN/dt is a differential of the rotational speed of said turbine.
A gas turbine control device, comprising:
- a turbine mechanical output computation device for computing a mechanical output of a turbine for rotationally driving a generator;
- fuel amount control means for controlling an amount of fuel, which is supplied to a combustor, based on a set load value and said generator output measured by said generator output measuring means;
- and
- combustion air amount control means for controlling an amount of combustion air, which is supplied to said combustor, based on a gas turbine mechanical output computed by said turbine mechanical output computation device;
- wherein
- said turbine mechanical output computation device being adapted to compute said mechanical output of said turbine from the following equation
- P
- =
- Pe
- +
- J
- ×
- g
- ×
- (
- 2
-
- π
- 60
- )
- 2
- ×
- N
- ×
- ⅆ
- N
- ⅆ
- t
- where Pe represents an output of said generator measured by generator output measuring means, N represents a rotational speed of said turbine measured by turbine rotational speed measuring means, J represents a moment of inertia of said turbine, g represents gravitational acceleration. and dN/dt is a differential of the rotational speed of said turbine.
Dependencies are inferred from the claim text.