JPH10309099A - Combined cycle power plant controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To avoid the increase of the number of starts of a predetermined gas turbine. SOLUTION: A combined cycle power plant controller 6a is provided with an entrance temperature measuring means 7 by which the temperatures of the turbine entrances of a plurality of bas turbines are measured, a memory means 8a in which the hysteresises of the turbine entrance temperatures of a plurality of the gas turbines are stored, a deterioration index calculating means 30a by which the indices of the hydsteresises of the turbine entrance temperatures of a plurality of the gas turbines are calculated to obtain the deterioration indices of a plurality of the gas turbines, an integral means 31 by which the integral values of the deterioration indices of a plurality of the gas turbines are obtained, a start priority judging means 32 by which the start priorities of a plurality of the gas turbines in accordance with the integral values of the deterioration indices of a plurality of the gas turbines, and a start appointing means 33 by which a gas turbine to be started is appointed among a plurality of the gas turbines in accordance with the start priorities of a plurality of the gas turbines.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combined cycle power plant control device for controlling start-up of a plurality of gas turbines provided in a combined cycle power plant which is a thermal power plant.

[0002]

2. Description of the Related Art One form of a power plant is a combined cycle power plant. A combined cycle power plant mainly includes at least one gas turbine, at least one steam turbine, and at least one generator that receives rotational power from the gas turbine or the steam turbine. In a single-shaft combined cycle power plant, one gas turbine, one steam turbine, and a generator are coaxially connected.

[0003] Generally, a gas turbine can have a shorter start-up time than a steam turbine. therefore,
In a combined cycle power plant including a plurality of gas turbines, the output amount is adjusted by starting and stopping the gas turbine in order to respond to a load request signal designating the output amount input from the central power supply command center.

That is, a combined cycle power plant equipped with a plurality of gas turbines starts a stopped gas turbine when the total output of the operating gas turbine is insufficient when a load request signal is input. If it is too large, the operating gas turbine is shut down.

[0005] When starting a gas turbine, the order of the gas turbines to be started out of a plurality of gas turbines has not been determined in the past. They are activated in a fixed order based on the numbers and alphabets assigned.

FIG. 13 is a conceptual diagram showing an example of a conventional gas turbine start-up operation. FIG. 13 illustrates a combined cycle power plant including a steam turbine (not shown) and a generator (not shown) coaxially with each of the first to fourth shaft gas turbines 11 to 14 as an example.

First to fourth axis controllers 21 to 24
When the start command is input, the first to fourth shaft gas turbines 11 to 14 are started, and when the stop command is input, the first to fourth shaft gas turbines 11 to 14 are stopped, respectively.

The first to fourth axis controllers 21 to 24 are provided with alphabets A to D, respectively. When newly starting the stopped gas turbines 11 to 14, the starting is performed in the alphabetical order. Let it.

The first to fourth shaft gas turbines 11 to 1
4 compresses the gas by the compressor 3. Further, the combustor 4 burns the fuel, and gives thermal energy generated by the combustion to the compressed gas. Then, the compressed gas to which the thermal energy has been applied causes the turbine 5 to rotate.

FIG. 14 is a diagram showing an example of the relationship between the daily output curve of a combined cycle power plant and the start timing of a plurality of gas turbines. In the following description, a case will be described in which the combined cycle power plant includes n gas turbines 11 to 1n.

In FIG. 14, total output amounts GT _{1 to} GT
_n is the number of activated gas turbines 11 to 1n, respectively.
The figure shows the total output amount in the case of n to n units. Further, times t _{1 to} t _n indicate times at which _{one to n} gas turbines 11 to 1 _n are to be started, respectively.

[0012] The combined cycle power plant, than the output curve L1, such that the total output quantity GT ₁ ~GT _n Gas turbine 11~1n increases shall ensure the start number of the gas turbine 11~1n .

[0013] That is, in the two operation of the gas turbine 11, to insufficient power generation capacity at time t ₃ after any single time t of the remaining n-2 units of the gas turbine 13~1n Need to start in ₃ . Similarly, in the operation of the three gas turbines 11 to 13 at time t ₄
To insufficient power generation capacity in the subsequent, it is necessary to activate the single one of the remaining n-3 units of the gas turbine 14~1n at time t _4.

As described above, in the combined cycle power plant, any one of the stopped gas turbines 11 to 1n is set so as to satisfy the output required for the power plant after the time t _{1 to} t _n. , And a total of 1 to n gas turbines 11 to 1n must be activated.

However, if the starting order of the n gas turbines 11 to 1n is fixed as in the prior art, n
Of the gas turbines 11 to 1n, the number of startups of only the predetermined gas turbines 11 to 1n may become extremely large.

[0016]

As described above, in the conventional combined cycle power plant, since the starting order of a plurality of gas turbines is fixedly determined, the number of times of starting only a predetermined gas turbine is limited. There is an extreme increase, and the deterioration state of each gas turbine may be biased, which causes a problem that the operation of the entire combined cycle power plant becomes inappropriate.

The present invention has been made in view of the above circumstances, and by equalizing the starting states of a plurality of gas turbines, the deterioration states of the plurality of gas turbines are equalized, and the combined cycle power plant has An object of the present invention is to provide a combined cycle power plant control device capable of appropriately operating.

[0018]

In order to achieve the above object, an invention according to claim 1 includes a plurality of gas turbines, at least one steam turbine, a plurality of gas turbines, and at least one gas turbine. A combined cycle power plant control device comprising at least one generator that receives rotational power from the steam turbine of the steam turbine, inlet temperature measuring means for measuring the temperature of the turbine inlet in a plurality of gas turbines, Storage means for storing a history of the turbine inlet temperatures of the plurality of gas turbines measured by the inlet temperature measuring means; and a plurality of exponentially calculated histories of the turbine inlet temperatures of the plurality of gas turbines stored in the storage means. Index calculation means for obtaining a deterioration index indicating the state of deterioration of the two gas turbines, and a composite index obtained by the deterioration index calculation means. Means for determining the integral value of the deterioration index of the gas turbines, and the starting priority for determining the starting priority of the plurality of gas turbines from the integrated values of the deterioration indexes of the gas turbines obtained by the integrating means Determining means, and starting specifying means for specifying a gas turbine to be started in accordance with a load request amount from a plurality of gas turbines according to the starting priority of the plurality of gas turbines determined by the starting priority determining means. And a combined cycle power plant control device comprising:

Therefore, in the combined cycle power plant control apparatus according to the first aspect of the present invention,
Deterioration index calculating means calculates the deterioration index of the plurality of gas turbines by calculating the index of the history of the turbine inlet temperatures of the plurality of gas turbines measured by the inlet temperature measuring means,
The integrating means integrates the deterioration indices of the plurality of gas turbines, and the startup priority determining means determines the starting priorities of the plurality of gas turbines based on the integrated values of the deterioration indices of the plurality of gas turbines. Therefore, it is possible to prevent an increase in the number of startups of only a predetermined gas turbine.

Therefore, the combined cycle power plant can be operated properly, and the life of a machine such as a gas turbine can be made uniform. Next, claim 2
In the combined cycle power plant control apparatus according to claim 1, the turbine inlet temperature of the plurality of gas turbines is differentiated by measuring the inlet temperature of the plurality of gas turbines by the inlet temperature measuring means. Differentiating means for determining the temperature change rate, absolute value calculating means for determining the absolute value of the temperature change rate of the turbine inlet temperature of the plurality of gas turbines determined by the differentiating means, and the plurality of gas turbines determined by the deterioration index calculating means Adding means for correcting the deterioration index of a plurality of gas turbines by adding the absolute value of the temperature change rate of the turbine inlet temperature of each gas turbine obtained by the absolute value calculating means to the deterioration index of the gas turbine. It is a combined cycle power plant control device.

Therefore, in the combined cycle power plant control apparatus according to the second aspect of the present invention,
The absolute value of the temperature change rate of each gas turbine is corrected by adding the absolute value of the temperature change rate of each gas turbine to the deterioration index of the plurality of gas turbines calculated by the deterioration index calculating means. Thus, the startup priority determination means determines the startup priority of the plurality of gas turbines, so that it is possible to further prevent an increase in the number of startups of only a predetermined gas turbine.

Therefore, the combined cycle power plant can be operated more appropriately, and the life of a machine such as a gas turbine can be made more uniform. next,
The invention corresponding to claim 3 includes a plurality of gas turbines,
A control device for a combined cycle power plant comprising at least one steam turbine, at least one gas turbine, and at least one generator receiving rotational power from the at least one steam turbine, comprising: A counter for counting the number of times the gas turbine is started and stopped, storage means for storing a history of the number of times the gas turbine is started and stopped counted by the counter, and a plurality of gases stored by the storage means Degradation index calculating means for calculating a deterioration index indicating the state of deterioration of a plurality of gas turbines by calculating the index of the history of the number of times of turbine start / stop, and deterioration indexes of the plurality of gas turbines calculated by the deterioration index calculating means Means for calculating an integral value of the gas turbine, and integration of the deterioration indexes of the plurality of gas turbines determined by the integrating means From, from the plurality of gas turbines, according to the start priority determining means for determining the start priority of the plurality of gas turbines and the start priority of the plurality of gas turbines determined by the start priority determining means And a start-up designating means for designating a gas turbine to be started up in accordance with a required load amount.

Therefore, in the combined cycle power plant control apparatus according to the third aspect of the present invention,
From the history of the number of start / stop times of the plurality of gas turbines counted by the counter, the start-up priority determining means determines the start-up priority of the plurality of gas turbines through the same operation as in claim 1 described above. Claim 1 because the degree is determined.
The same effect as in the case of can be obtained.

Next, a fourth aspect of the present invention provides a plurality of gas turbines, at least one steam turbine,
A control device for a combined cycle power plant comprising a plurality of gas turbines and at least one generator for receiving rotational power from at least one steam turbine, the control device comprising: A counter that counts the number of times, a timer that measures the time required to start and stop multiple gas turbines, and a
The number of start / stop times obtained by dividing the number of stop times by the time required for starting / stopping each gas turbine measured by the timer /
Division means for obtaining a time value, storage means for storing a history of the number of times of start / stop of a plurality of gas turbines / time value obtained by the division means, and start / stop of a plurality of gas turbines stored by the storage means A deterioration index calculating means for calculating a deterioration index indicating a state of deterioration of a plurality of gas turbines by calculating a history of the number of times / time value by an index, and integrating the deterioration indexes of the plurality of gas turbines calculated by the deterioration index calculating means Integrating means for obtaining the value, and from the integrated values of the deterioration indexes of the plurality of gas turbines obtained by the integrating means,
Starting priority determining means for determining the starting priority of the plurality of gas turbines, and a load from among the plurality of gas turbines according to the starting priorities of the plurality of gas turbines determined by the starting priority determining means. A combined cycle power plant control device comprising: a start designation unit that designates a gas turbine to be started according to a required amount.

Therefore, in the combined cycle power plant control apparatus according to the invention corresponding to claim 4,
The history of the number of times of start / stop / time value obtained by dividing the number of times of start / stop of a plurality of gas turbines counted by the counter by the time required for start / stop of each gas turbine measured by the timer is described above. Since the startup priority determination means determines the startup priority of the plurality of gas turbines through the same operation as in the case of the third aspect, the same effect as in the case of the third aspect can be obtained.

Next, the invention corresponding to claim 5 includes a plurality of gas turbines, at least one steam turbine,
A control device for a combined cycle power plant including a plurality of gas turbines and at least one generator for receiving rotational power from at least one steam turbine, wherein the control device is provided for each of the plurality of gas turbines. Random number generating means for generating a random number, starting priority determining means for determining a starting priority of a plurality of gas turbines by a random number given by the random number generating means, and a plurality of the plurality of gas turbines determined by the starting priority determining means According to the startup priority of the gas turbine, from among multiple gas turbines,
A combined cycle power plant control device comprising: a start designating unit that designates a gas turbine to be started according to a load request amount.

Therefore, in the combined cycle power plant control apparatus according to the invention corresponding to claim 5,
Since the starting priority of the plurality of gas turbines is determined based on the random numbers generated by the random number generating means, it is possible to prevent an increase in the number of starts of only a predetermined gas turbine.

Therefore, the combined cycle power plant can be operated properly, and the life of a machine such as a gas turbine can be made uniform. Next, claim 6
The present invention comprises a plurality of gas turbines, at least one steam turbine, and at least one generator that receives rotational power from the plurality of gas turbines and at least one steam turbine. A control device for a combined cycle power plant, comprising: a power generation amount measuring means for measuring a power generation amount generated by rotating power of a plurality of gas turbines; and a power generation amount of the plurality of gas turbines measured by the power generation amount measuring means. Means for storing a history of power generation of the plurality of gas turbines stored in the storage means, and a deterioration index calculating means for calculating a deterioration index indicating a state of deterioration of the plurality of gas turbines by performing an index calculation. And integrating means for calculating an integrated value of the deterioration index of the plurality of gas turbines obtained by the deterioration index calculating means,
Starting priority determining means for determining the starting priority of the plurality of gas turbines from the integrated values of the deterioration indexes of the plurality of gas turbines obtained by the integrating means, and the plurality of the plurality of gas turbines determined by the starting priority determining means. A combined cycle power plant control apparatus comprising: a start designation unit that designates, from a plurality of gas turbines, a gas turbine to be started according to a load request amount according to a start priority of the gas turbine.

Therefore, in the combined cycle power plant control device according to the invention according to claim 6,
From the history of the power generation amounts of the plurality of gas turbines measured by the power generation amount measurement means, the activation priority determination means performs the activation of the plurality of gas turbines through the same operation as in the case of claim 1 described above. Since the priority is determined, the same effect as that of the first aspect can be obtained.

According to a seventh aspect of the present invention, there is provided the combined cycle power plant control apparatus according to the sixth aspect, wherein a gas turbine speed counter for counting the speeds of the plurality of gas turbines, and a gas turbine speed. Differentiating means for differentiating the rotation speeds of the plurality of gas turbines counted by the counter to obtain the rotation speed change rates of the plurality of gas turbines, and calculating the rotation speed change rates of the plurality of gas turbines obtained by the differentiation means. The absolute value calculating means for obtaining the absolute value and the deterioration index of the plurality of gas turbines obtained by the deterioration index calculating means are added with the absolute value of the rate of change of the rotation speed of each gas turbine obtained by the absolute value calculating means. Combined cycle power plant control apparatus, comprising: an adder for correcting deterioration indexes of a plurality of gas turbines. A.

Therefore, in the combined cycle power plant control apparatus according to the present invention,
The absolute value of the rate of change in the number of rotations of each gas turbine is added to the deterioration index of the plurality of gas turbines obtained by the deterioration index calculation means to correct the deterioration index, and integrated from the corrected deterioration index of the plurality of gas turbines. Since the startup priority determination means determines the startup priority of the plurality of gas turbines via the means, it is possible to further prevent an increase in the number of startups of only a predetermined gas turbine.

Therefore, the combined cycle power plant can be operated more appropriately, and the life of a machine such as a gas turbine can be made more uniform. next,
The invention corresponding to claim 8 includes a plurality of gas turbines,
A control device for a combined cycle power plant comprising at least one steam turbine, at least one gas turbine, and at least one generator receiving rotational power from the at least one steam turbine, comprising: Fuel input amount measuring means for measuring the amount of fuel input to the combustor of the gas turbine, storage means for storing the history of the fuel input amounts of the plurality of gas turbines measured by the fuel input amount measuring means, and storage means Index calculation means for calculating the index of the fuel input amounts of the plurality of gas turbines stored by the index calculation unit to obtain a deterioration index indicating the state of deterioration of the plurality of gas turbines, and the deterioration index calculation means. Integrating means for obtaining an integrated value of the deterioration index of the plurality of gas turbines; and a deterioration index of the plurality of gas turbines obtained by the integrating means. Starting priority determining means for determining the starting priority of the plurality of gas turbines from the integrated value of the plurality of gas turbines, and a plurality of gas turbines according to the starting priority of the plurality of gas turbines determined by the starting priority determining means. And a start-designating means for designating a gas turbine to be started according to a load request amount.

Therefore, in the combined cycle power plant control apparatus according to the present invention,
From the history of the fuel input amounts of the plurality of gas turbines measured by the fuel input amount measuring means, the start priority determining means determines the plurality of gas turbines through the same operation as in the case of the above-mentioned claim 1. Is determined, the same effect as that of the first aspect can be obtained.

Next, the invention corresponding to claim 9 includes a plurality of gas turbines, at least one steam turbine,
A control device for a combined cycle power plant comprising a plurality of gas turbines and at least one generator for receiving rotational power from at least one steam turbine, wherein the control device controls a combustion of the fuel in the plurality of gas turbines. and NO _x emission measuring means for measuring emissions generated NO _x, storage means for storing a history of the NO _x emissions of a plurality of gas turbine measured by NO _x emission amount measuring means, the storage means A deterioration index calculating means for calculating a deterioration index indicating a state of deterioration of the plurality of gas turbines by performing an index calculation on the stored histories of the plurality of gas turbines; and a plurality of gas turbines determined by the deterioration index calculating means. Integrating means for obtaining an integrated value of the deterioration index of
Starting priority determining means for determining the starting priority of the plurality of gas turbines from the integrated values of the deterioration indexes of the plurality of gas turbines obtained by the integrating means, and the plurality of the plurality of gas turbines determined by the starting priority determining means. A combined cycle power plant control apparatus comprising: a start designation unit that designates, from a plurality of gas turbines, a gas turbine to be started according to a load request amount according to a start priority of the gas turbine.

Therefore, in the combined cycle power plant control device according to the ninth aspect of the present invention,
From the NO _x emissions history of a plurality of gas turbine measured by NO _x emission measuring means, through the same operation as in claim 1 mentioned above, start the priority determining means is a plurality Since the starting priority of the gas turbine is determined, the same effect as that of the first aspect can be obtained.

Finally, a tenth aspect of the present invention relates to a plurality of gas turbines, at least one steam turbine, and at least one gas turbine that receives rotational power from the plurality of gas turbines and at least one steam turbine. An exhaust gas temperature measuring means for measuring the temperature of exhaust gas generated by combustion of fuel in a plurality of gas turbines, the control device of a combined cycle power plant comprising: Compressor outlet pressure measuring means for measuring the pressure of the compressed gas at the outlet, exhaust gas temperatures in a plurality of gas turbines measured by the exhaust gas temperature measuring means, and a plurality of compressors measured by the compressor outlet pressure measuring means Predicted inlet inlet temperature of multiple gas turbines from the outlet gas pressure of the turbine Calculation means, storage means for storing a history of predicted temperatures at the turbine inlets of the plurality of gas turbines determined by the predicted inlet temperature calculation means, and prediction of turbine inlets of the plurality of gas turbines stored by the storage means Deterioration index calculating means for calculating a deterioration index indicating the state of deterioration of a plurality of gas turbines by calculating the index of the temperature history, and obtaining an integrated value of the deterioration indexes of the plurality of gas turbines obtained by the deterioration index calculating means. Integrating means, starting priority determining means for determining the starting priority of the plurality of gas turbines from the integrated values of the deterioration indexes of the plurality of gas turbines obtained by the integrating means, and starting priority determining means. From the multiple gas turbines according to the startup priority of the multiple gas turbines,
A combined cycle power plant control device comprising: a start designating unit that designates a gas turbine to be started according to a load request amount.

Accordingly, in the combined cycle power plant control apparatus according to the tenth aspect of the present invention, the exhaust gas temperature in a plurality of gas turbines measured by the exhaust gas temperature measuring means and the compressor outlet pressure measuring means are measured. From the history of the predicted temperatures at the turbine inlets of the plurality of gas turbines obtained from the outlet gas pressures of the plurality of compressors, the start priority determining means through the same operation as in the case of claim 1 described above. Determines the startup priority of a plurality of gas turbines, so that the same effect as in claim 1 can be obtained.

[0038]

Embodiments of the present invention will be described below in detail with reference to the drawings. (First Embodiment) FIG. 1 is a block diagram showing an example of an arrangement state of a gas turbine startup control device in a combined cycle power plant according to the present embodiment.

Here, four gas turbines 11 to 11 are used.
14 is shown as an example, and the same parts as those in FIG. 13 are denoted by the same reference numerals, and the description thereof will be omitted.

The gas turbine start control device 6a receives a load request signal from a central power supply command center (not shown) and controls the first to fourth shaft gas turbines 11 so as to realize a sufficient output amount as a combined cycle power plant. -14 are controlled and monitored.

The gas turbine start control device 6a outputs a start command to the first to fourth axis controllers 21 to 24. FIG. 2 is a block diagram illustrating a configuration example of the gas turbine startup control device 6a according to the present embodiment.

The temperature sensor 7 measures the temperature at the inlet of the turbine 5 in the first to fourth shaft gas turbines 11 to 14 and outputs the measurement result to the storage device 8a. The storage device 8a stores the measured first to fourth shaft gas turbines 11 to 11
The temperature of the turbine 5 inlet at 14 is input, and the history of the temperature of the turbine 5 inlet is stored.

The arithmetic unit 30a inputs the history of the temperature at the inlet of the turbine 5 in the first to fourth shaft gas turbines 11 to 14 stored in the storage device 8a, and outputs the first to fourth shaft gas turbines 11 A deterioration index indicating the degree of deterioration of each of Nos. To 14 is obtained.

The deterioration indexes of the first to fourth shaft gas turbines 11 to 14 have an exponential relationship with the temperature at the inlet of the turbine 5 in each of the gas turbines 11 to 14, as shown in FIG. .

Therefore, the computing unit 30a calculates the deterioration index by exponentially calculating the temperature at the inlet of the turbine 5 for each of the first to fourth shaft gas turbines 11 to 14 and outputs the deterioration index to the integrator 31. The integrator 31 integrates the inputted deterioration indexes of the first to fourth shaft gas turbines 11 to 14, and calculates the first to fourth shaft gas turbines.
The integrated value of the deterioration index for each of the shaft gas turbines 11 to 14 is output to the priority determination circuit 32.

The priority determination circuit 32 determines whether the input first axis
Based on the integrated value of the deterioration index for each of the fourth shaft gas turbines 11 to 14, it is determined that the smaller the integrated value is, the higher the startup priority is, and the determination result of the startup priority is output to the startup specifying device 33. .

The start designating device 33 receives a load request signal from the central power supply command center, receives a start priority determination result from the priority determination circuit 32, and starts the start priority so as to satisfy the requested output amount. The start commands are output to the first to fourth axis controllers 21 to 24 in descending order of degree.

That is, the start-up specifying device 33 starts up any one of the stopped first to fourth shaft gas turbines 11 to 14 in order to satisfy the requested output amount.
First axis to fourth axis controller 21 having the highest start priority
To 24 are output.

The operation of the gas turbine activation control device 6a configured as described above will be described. First, the first to fourth shaft gas turbines 1 measured by the temperature sensor 7
The storage device 8a stores the temperature at the inlet of the turbine 5 at 1 to 14
To create a history.

Next, the first axis to the first axis stored in the storage device 8a
The history of the temperature at the inlet of the turbine 5 in each of the fourth shaft gas turbines 11 to 14 is calculated as an index by the calculator 30a to obtain a deterioration index.

Next, the deterioration index is integrated by the integrator 31, and the priority determination circuit 32 assigns a higher startup priority to the gas turbines 11 to 14 having a smaller integrated value of the deterioration index. Here, when the combined cycle power plant receives a load request signal from the central power supply command center, the load request signal is input to the activation designation device 33 of the gas turbine activation control device 6a.

The start-up designation device 33 controls the first to fourth-axis controllers 21 to 24 connected to the first to fourth-axis gas turbines 11 to 14 having a high start priority so as to satisfy the required output amount. Output a start command to

As described above, in the gas turbine activation control device 6a according to the present embodiment, the history of the temperature at the inlet of the turbine 5 in the first to fourth shaft gas turbines 11 to 14 stored in the storage device 8a. , The computing unit 30a and the integrator 31 determine the integrated value of the deterioration index, and determine that the smaller the integrated value of the deterioration index obtained by the priority determination circuit 32 is, the higher the activation priority is. Are the first to fourth shaft gas turbines 11 to 11 having a high starting priority.
1st to 4th axis controller 21 connected to 14
To 24 are output.

Therefore, since the starting priority of the first to fourth shaft gas turbines 11 to 14 is determined, it is possible to prevent an increase in the number of times only the predetermined gas turbines 11 to 14 are started.

Therefore, the combined cycle power plant can be operated properly, and the gas turbines 11 to 11 can be operated properly.
The life of the machine such as 14 can be made uniform. In the gas turbine start-up control device 6a in the combined cycle power plant according to the present embodiment, a description will be given of an example in which the gas turbine startup control device 6a is connected to four gas turbines 11 to 14 via four controllers 21 to 24. However, the present invention is not limited to this, and similar effects can be obtained by similar operations for various types of combined cycle power plants including a plurality of gas turbines 11 to 11n.

In the gas turbine start-up control device 6a according to the present embodiment, the stopped gas turbine 11
When the gas turbines 11 to 14 are started, the gas turbines 11 to 14 having a high start priority are started. By stopping the operation from the turbines 11 to 14, the operation of the entire combined cycle power plant can be more appropriately performed, and the life of the machines such as the gas turbines 11 to 14 can be made more uniform.

Further, the gas turbine startup control device 6a according to the present embodiment can be applied not only to a combined cycle power plant but also to other types of power plants. (Second Embodiment) The arrangement state of the gas turbine activation control device according to the present embodiment is the same as the arrangement state of the gas turbine activation control device 6a according to the first embodiment shown in FIG. Here, the description is omitted.

That is, the gas turbine start-up control device according to the present embodiment includes first to fourth axis controllers 21 to 21.
24, the first to fourth axis controllers 21 to 24 start the first to fourth axis gas turbines 11 to 14 when the first to fourth axis controllers 21 to 24 input the start instruction.

FIG. 4 is a block diagram showing a configuration example of a gas turbine startup control device in a combined cycle power plant according to the present embodiment. The same parts as those in FIG. Omitted or
Or, it will be briefly described, and only different portions will be described in detail here.

That is, the gas turbine activation control device 6b according to the present embodiment includes an adder 34b between the calculator 30a and the integrator 31 of the gas turbine activation control device 6a according to the first embodiment. , First to fourth axis gas turbine 1 measured by temperature sensor 7
A differentiator 35b for inputting the temperature of the inlet of the turbine 5 in 1 to 14 and an absolute value calculator 36b between the differentiator 35b and the adder 34b are provided.

The differentiator 35b inputs the temperature at the inlet of the turbine 5 in the first to fourth shaft gas turbines 11 to 14 measured by the temperature sensor 7, and inputs the first to fourth shaft gas turbines 11 to 14. , The temperature change rate of the temperature at the inlet of the turbine 5 is obtained and output to the absolute value calculator 36b.

The absolute value calculator 36b obtains the absolute value of the temperature change rate at the inlet of the turbine 5 in the first to fourth axis gas turbines 11 to 14, and outputs it to the adder 34b. The adder 34b receives the deterioration index from the calculator 30a and the absolute value of the temperature change rate at the inlet of the turbine 5 from the absolute value calculator 36b.

The input absolute value of the temperature change rate at the inlet of the turbine 5 affects the deterioration index. Therefore, adder 3
4b, the first axis to the fourth axis are used to correct this deterioration index.
The absolute value of the temperature change rate at the inlet of the turbine 5 in the shaft gas turbines 11 to 14 is calculated based on the first to fourth shaft gas turbines 11 to 11.
14 is added to the deterioration index.

Then, the adder 34b outputs the corrected deterioration index to the integrator 31. The operation of the gas turbine startup control device 6b configured as described above will be described.

First, the temperature at the inlet of the turbine 5 in the first to fourth shaft gas turbines 11 to 14 measured by the temperature sensor 7 is stored in the storage device 8a to create a history. Next, the history stored in the storage device 8a is
An index operation is performed using 0a to obtain a deterioration index.

At the same time, the temperature at the inlet of the turbine 5 of the first to fourth shaft gas turbines 11 to 14 measured by the temperature sensor 7 is differentiated by the differentiator 35b to obtain a temperature change rate, and an absolute value calculation is performed. The absolute value of the temperature change rate is obtained by the heater 36b.

Next, the absolute value of the temperature change rate is added to the deterioration index by the adder 34b to correct the deterioration index. Next, the corrected deterioration index is integrated by the integrator 31, and the priority determination circuit 32 determines whether the gas turbine 1 having a small integrated value of the deterioration index
A higher startup priority is assigned to 1 to 14.

The start designating device 33 controls the first to fourth axis controllers 21 to 24 connected to the first to fourth axis gas turbines 11 to 14 having high start priority so as to satisfy the required output amount. Output a start command to

As described above, in the gas turbine startup control device 6b according to the present embodiment, the startup priority is determined based on the deterioration index corrected using the absolute value of the temperature change rate at the inlet of the turbine 5. Therefore, the start priorities of the first to fourth shaft gas turbines 11 to 14 can be determined with higher accuracy than the gas turbine start control device 6a according to the first embodiment, and the predetermined gas turbines 11 to 14 can be determined. It is possible to further prevent the number of activations of only 14 from increasing.

Therefore, the combined cycle power plant can be operated more appropriately, and the gas turbine 1
The life of the machines such as 1 to 14 can be made more uniform. The gas turbine start-up control device 6b in the combined cycle power plant according to the present embodiment is variously modified within the scope not departing from the gist, similarly to the gas turbine start-up control device 6a according to the first embodiment. it can.

(Third Embodiment) The arrangement of the gas turbine start control device according to the present embodiment is the same as the gas turbine start control device 6a according to the first embodiment shown in FIG.
Since the arrangement state is the same as that described above, the description is omitted here.

That is, the gas turbine start-up control device according to the present embodiment includes the first to fourth axis controllers 21 to 21.
24, the first to fourth axis controllers 21 to 24 start the first to fourth axis gas turbines 11 to 14 when the first to fourth axis controllers 21 to 24 input the start instruction.

FIG. 5 is a block diagram showing a configuration example of a gas turbine start-up control device in the combined cycle power plant according to the present embodiment. The same parts as those in FIG. Omitted or
Or, it will be briefly described, and only different portions will be described in detail here.

That is, in the gas turbine startup control device 6c according to the present embodiment, the temperature sensor 7 of the gas turbine startup control device 6a according to the first embodiment is mainly used.
And a start / stop counter 37 is provided.

The start / stop counter 37 includes the first axis to the fourth axis.
The number of start / stop of each of the shaft gas turbines 11 to 14 is counted and output to the storage device 8c. Here, the start / stop counter 37 determines that, for example, the number of revolutions of the first to fourth shaft gas turbines 11 to 14 is from 10% or less of the rating to 98% or more, and the load is 25% or more of the rating. In this case, it is determined that the first to fourth shaft gas turbines 11 to 14 have been started, one count is added, and the load is reduced by 10%.
When the number of rotations becomes 95% or more to 10% or less, the first to fourth shaft gas turbines 11 to 14 are determined to be stopped, and one count is added.

The storage device 8c has a start / stop counter 37.
1st to 4th axis gas turbines 11 to 14 counted in
, The number of times that the first to fourth axis controllers 21 to 24 have input the start command and the stop command are stored as a history.

The arithmetic unit 30c inputs the history stored in the storage device 8c, and outputs the first to fourth shaft gas turbines 11
-14 are determined. The deterioration index of each of the first to fourth shaft gas turbines 11 to 14 is the first
There is an exponential relationship with the number of times that the shaft to fourth shaft gas turbines 11 to 14 are started and stopped.

Therefore, the computing unit 30 c calculates the number of times of starting and stopping for each of the first to fourth shaft gas turbines 11 to 14 to obtain a deterioration index, and outputs the deterioration index to the integrator 31. The operation of the gas turbine activation control device 6c configured as described above will be described.

First, the number of start / stop of each of the first to fourth shaft gas turbines 11 to 14 measured by the start / stop counter 37 is stored in the storage device 8c to create a history.

Next, the history stored in the storage device 8c is
An arithmetic operation is performed by an arithmetic unit 30c to obtain a deterioration index, and the integrator 3
The deterioration index is integrated by 1, and the priority determination circuit 32 assigns a higher startup priority to the gas turbines 11 to 14 having a smaller integrated value of the deterioration index.

Then, the start specifying device 33 outputs a start command to the first to fourth axis controllers 21 to 24 connected to the first to fourth axis gas turbines 11 to 14 having a high start priority.

As described above, in the gas turbine startup control device 6c according to the present embodiment, the history of the number of times of starting / stopping the first to fourth shaft gas turbines 11 to 14 stored in the storage device 8c is provided. , The computing unit 30c and the integrator 31 determine the integral value of the deterioration index, and determine that the smaller the integrated value of the deterioration index determined by the priority determination circuit 32, the higher the activation priority. Outputs a start command to the first to fourth shaft controllers 21 to 24 connected to the first to fourth shaft gas turbines 11 to 14 having the higher start priority.

Therefore, in order to determine the starting priority of the first to fourth shaft gas turbines 11 to 14, it is possible to prevent the number of startups of only the predetermined gas turbines 11 to 14 from increasing and to operate the combined cycle power plant. Can be performed appropriately, and the life of machines such as the gas turbines 11 to 14 can be made uniform.

The gas turbine activation control device 6c in the combined cycle power plant according to the present embodiment is variously modified within the scope of the gist, similarly to the gas turbine activation control device 6a according to the first embodiment. Can be implemented.

(Fourth Embodiment) The arrangement of the gas turbine start control device according to the present embodiment is the same as the gas turbine start control device 6a according to the first embodiment shown in FIG.
Since the arrangement state is the same as that described above, the description is omitted here.

That is, the gas turbine start-up control device according to the present embodiment includes first to fourth axis controllers 21 to 21.
24, the first to fourth axis controllers 21 to 24 start the first to fourth axis gas turbines 11 to 14 when the first to fourth axis controllers 21 to 24 input the start instruction.

FIG. 6 is a block diagram showing a configuration example of a gas turbine activation control device in a combined cycle power plant according to the present embodiment, and the same parts as those in FIG. Omitted or
Or, it will be briefly described, and only different portions will be described in detail here.

That is, in the gas turbine activation control device 6d according to the present embodiment, mainly, the storage device 8c of the gas turbine activation control device 6c according to the third embodiment.
And a storage device 8d, and the start / stop counter 3
A divider 39 is provided between the storage device 7 and the storage device 8d, and a timer 40 is provided in a stage preceding the divider 39.

The timer 40 measures the time required for the first to fourth shaft gas turbines 11 to 14 to start and stop, that is, the time required from the start to the rating and from the rating to the stop.

The divider 39 controls the first to fourth shaft gas turbines 11 to 1 measured by the start / stop counter 37.
4 and the time required for the start / stop of the first to fourth shaft gas turbines 11 to 14 measured by the timer 20 are input, and the first to fourth shaft gas turbines are input. A value obtained by dividing the number of times of start / stop of each of the gas turbines 11 to 14 by the time required for the start / stop of each of the gas turbines 11 to 14 (hereinafter referred to as “number of times of start / stop / time value”) is obtained, The obtained start / stop count / time value of the first to fourth shaft gas turbines 11 to 14 is stored in the storage device 8.
Output to d.

The storage device 8d stores the first data obtained by the divider 39.
The start / stop count / time value of the shaft to fourth shaft gas turbines 11 to 14 is stored as a history. The computing unit 30d inputs the history stored in the storage device 8d, and obtains the respective deterioration indexes of the first to fourth shaft gas turbines 11 to 14.

The deterioration indexes of the first to fourth shaft gas turbines 11 to 14 have an exponential relationship with the number of times of starting / stopping / time value of each gas turbine 11 to 14. Therefore, the arithmetic unit 30d is configured to control the first to fourth shaft gas turbines 1.
An index calculation is performed on the number of times of start / stop / time value for each of 1 to 14 to obtain a deterioration index, which is output to the integrator 31.

The operation of the gas turbine activation control device 6d configured as described above will be described. First, the number of start / stop of the first to fourth shaft gas turbines 11 to 14 measured by the start / stop counter 37 and the timer 4
From the time required for starting and stopping each of the gas turbines 11 to 14 measured by 0, the divider 39 calculates the number of times of starting / stopping / time value of each of the gas turbines 11 to 14, and this gas turbine 11 to 14 Is stored in the storage device 8d to create a history.

Next, the history stored in the storage device 8d is
An exponent is calculated by the calculator 30d to obtain a deterioration index. next,
The integrator 31 integrates the deterioration index, and the priority determination circuit 32 determines the gas turbines 11 to 1 having a small integrated value of the deterioration index.
A higher startup priority is assigned to about four.

Then, the start specifying device 33 outputs a start command to the first to fourth axis controllers 21 to 24 connected to the first to fourth axis gas turbines 11 to 14 having a high start priority.

As described above, in the gas turbine startup control device 6d according to the present embodiment, the number of times of start / stop / time value of the first to fourth shaft gas turbines 11 to 14 stored in the storage device 8d is determined. Based on the history, arithmetic unit 30d
And the integrator 31 calculates the integral value of the deterioration index. The priority determination circuit 32 determines that the smaller the integrated value of the deterioration index is, the higher the activation priority is. A start command is output to the first to fourth axis controllers 21 to 24 connected to the first to fourth axis gas turbines 11 to 14.

Therefore, in order to determine the starting priority of the first to fourth shaft gas turbines 11 to 14, it is possible to prevent the number of times of starting only the predetermined gas turbines 11 to 14 from increasing, and to operate the combined cycle power plant. Can be performed appropriately, and the life of machines such as the gas turbines 11 to 14 can be made uniform.

The gas turbine activation control device 6d in the combined cycle power plant according to the present embodiment is variously modified within the scope of the gist, similarly to the gas turbine activation control device 6a according to the first embodiment. Can be implemented.

(Fifth Embodiment) The arrangement of the gas turbine start control device according to the present embodiment is the same as the gas turbine start control device 6a according to the first embodiment shown in FIG.
Since the arrangement state is the same as that described above, the description is omitted here.

That is, the gas turbine start-up control device according to the present embodiment includes first to fourth axis controllers 21 to 21.
24, the first to fourth axis controllers 21 to 24 start the first to fourth axis gas turbines 11 to 14 when the first to fourth axis controllers 21 to 24 input the start instruction.

FIG. 6 is a block diagram showing a configuration example of a gas turbine startup control device in a combined cycle power plant according to the present embodiment. The same parts as those in FIG. Omitted or
Or, it will be briefly described, and only different portions will be described in detail here.

That is, the gas turbine activation control device 6e according to the present embodiment includes a random number generator 41, a priority determination circuit 32, and an activation designation device 33.

The random number generator 41 generates a random number in a specified range and outputs it to the priority determination circuit 32. The priority determination circuit 32 outputs the random number input from the random number generator 41 to the first
Attached to the shaft to fourth shaft gas turbines 11 to 14, for example, it is determined that the higher the random number, the higher the gas turbines 11 to 14 are, the higher the start priority is, and the determination result of the start priority is output to the start specifying device 33. I do.

The operation of the gas turbine start-up control device 6e configured as described above will be described. First, a random number is generated by a random number generator 41, and a priority determination circuit 32 assigns this random number to the first to fourth axis gas turbines 11 to 14. It is determined that the higher the turbines 11 to 14, the higher the activation priority.

Then, the start specifying device 33 outputs a start command to the first to fourth axis controllers 21 to 24 connected to the first to fourth shaft gas turbines 11 to 14 having the higher start priority.

As described above, the gas turbine startup control device 6e according to the present embodiment uses the random numbers to determine the startup priority of the first to fourth shaft gas turbines 11 to 14 indefinitely. It is possible to prevent the number of startups of only the predetermined gas turbines 11 to 14 from increasing, to appropriately operate the combined cycle power plant, and to make the life of the machines such as the gas turbines 11 to 14 uniform. .

The gas turbine start-up control device 6e in the combined cycle power plant according to the present embodiment has various modifications within the scope not departing from the gist, similarly to the gas turbine start-up control device 6a according to the first embodiment. Can be implemented.

(Sixth Embodiment) The arrangement of the gas turbine start control device according to the present embodiment is the same as the gas turbine start control device 6a according to the first embodiment shown in FIG.
Since the arrangement state is the same as that described above, the description is omitted here.

That is, the gas turbine start-up control device according to the present embodiment includes the first to fourth axis controllers 21 to 21.
24, the first to fourth axis controllers 21 to 24 start the first to fourth axis gas turbines 11 to 14 when the first to fourth axis controllers 21 to 24 input the start instruction.

FIG. 8 is a block diagram showing a configuration example of a gas turbine start-up control device in the combined cycle power plant according to the present embodiment. The same parts as those in FIG. Omitted or
Or, it will be briefly described, and only different portions will be described in detail here.

That is, the gas turbine start-up control device 6f according to the present embodiment mainly includes a power generation amount sensor 42 instead of the temperature sensor 7 of the gas turbine start-up control device according to the first embodiment. Has become.

The power generation amount sensor 42 measures the power generation amounts of the first to fourth shaft gas turbines 11 to 14 and outputs the measurement result to the storage device 8f. The storage device 8f stores a history of power generation amounts of the first to fourth shaft gas turbines 11 to 14 measured by the power generation amount sensor 42.

The computing unit 30f inputs the history of the power generation amounts of the first to fourth shaft gas turbines 11 to 14 stored in the storage device 8f, and outputs the first to fourth shaft gas turbines 11 to 14.
4 is obtained.

The deterioration index for each of the first to fourth shaft gas turbines 11 to 14 has an exponential relationship with the power generation amount of each of the gas turbines 11 to 14. Therefore, the calculator 30 f calculates the power generation amount of each of the first to fourth shaft gas turbines 11 to 14 to obtain a deterioration index, and outputs the deterioration index to the integrator 31.

The operation of the gas turbine activation control device 6f configured as described above will be described. First, the power generation amounts of the first to fourth shaft gas turbines 11 to 14 measured by the power generation amount sensor 42 are stored in the storage device 8f to create a history.

Next, the history stored in the storage device 8f is
An arithmetic operation is performed by the arithmetic unit 30f to obtain a deterioration index. next,
The integrator 31 integrates the deterioration indices of the first to fourth shaft gas turbines 11 to 14, and the priority determination circuit 32 assigns a higher startup priority to the gas turbines 11 to 14 having smaller integrated values of the deterioration indices.

Then, the start specifying device 33 outputs a start command to the first to fourth axis controllers 21 to 24 connected to the first to fourth axis gas turbines 11 to 14 having a high start priority.

As described above, in the gas turbine activation control device 6f according to the present embodiment, based on the history of the power generation amounts of the first to fourth shaft gas turbines 11 to 14 stored in the storage device 8f. , Arithmetic unit 30f and integrator 31
Calculates the integral value of the deterioration index, and determines that the smaller the integrated value of the deterioration index obtained by the priority determination circuit 32 is, the higher the activation priority is. The first connected to the four-shaft gas turbines 11 to 14
A start command is output to the axis to fourth axis controllers 21 to 24.

Therefore, in order to determine the starting priority of the first to fourth shaft gas turbines 11 to 14, it is possible to prevent the number of times of starting only the predetermined gas turbines 11 to 14 from increasing, and to operate the combined cycle power plant. Can be performed appropriately, and the life of machines such as the gas turbines 11 to 14 can be made uniform.

The gas turbine activation control device 6f in the combined cycle power plant according to the present embodiment has various modifications within the scope of the gist, similarly to the gas turbine activation control device 6a according to the first embodiment. Can be implemented.

(Seventh Embodiment) The arrangement of the gas turbine start control device according to the present embodiment is the same as the gas turbine start control device 6a according to the first embodiment shown in FIG.
Since the arrangement state is the same as that described above, the description is omitted here.

That is, the gas turbine start-up control device according to the present embodiment includes the first to fourth axis controllers 21 to 21.
24, the first to fourth axis controllers 21 to 24 start the first to fourth axis gas turbines 11 to 14 when the first to fourth axis controllers 21 to 24 input the start instruction.

FIG. 9 is a block diagram showing a configuration example of a gas turbine activation control device in the combined cycle power plant according to the present embodiment. The same parts as those in FIG. Omitted or
Or, it will be briefly described, and only different portions will be described in detail here.

That is, in the gas turbine activation control device 6g according to the present embodiment, mainly, the calculator 30f of the gas turbine activation control device 6f according to the sixth embodiment.
, An adder 34g is provided between the calculator 30g and the integrator 31, and a rotation speed counter 43 is provided to the adder 34g via a differentiator 35g and an absolute value calculator 36g. It has a connected configuration.

The rotation speed counter 43 counts the rotation speeds of the first to fourth shaft gas turbines 11 to 14,
The gas turbine rotation speeds of the shaft to fourth shaft gas turbines 11 to 14 are output to a differentiator 35g.

The differentiator 35g is configured to control the first to fourth shaft gas turbines 11 to 14 measured by the rotation speed counter 43.
, The rate of change of the gas turbine speed is determined from this gas turbine speed, and output to the absolute value calculator 36g.

The absolute value calculator 36g determines the absolute value of the rate of change of the gas turbine speed of the first to fourth shaft gas turbines 11 to 14 and outputs the absolute value to the adder 34g. Adder 34g
From the arithmetic unit 30g to the first to fourth shaft gas turbines 11
-14, and the absolute value of the rate of change in the gas turbine speed of the first to fourth shaft gas turbines 11 to 14 is input from the absolute value calculator 36g.

First to Fourth Axis Gas Turbine 1
The absolute value of the gas turbine rotational speed change rate of 1 to 14 affects the deterioration index. Therefore, the adder 34g adds the absolute value of each gas turbine rotational speed change rate to the deterioration indexes of the first to fourth shaft gas turbines 11 to 14 in order to correct the deterioration index.

Then, the adder 34g outputs the corrected deterioration index to the integrator 31. The operation of the gas turbine activation control device 6g configured as described above will be described.

First, the power generation amounts of the first to fourth shaft gas turbines 11 to 14 measured by the power generation amount sensor 42 are stored in the storage device 8g to create a history. Next, the history stored in the storage device 8g is subjected to an exponent calculation by the calculator 30g to obtain a deterioration index.

At the same time, the rotation speed counter 43
1st to 4th shaft gas turbines 11 to 11 measured by
The gas turbine rotational speed is differentiated by a differentiator 35g to obtain a gas turbine rotational speed change rate, and an absolute value calculator 36g is used to obtain an absolute value of the gas turbine rotational speed change rate.

Next, the first to fourth shaft gas turbines 11 to 11
The deterioration index is corrected by adding the absolute value of each gas turbine rotational speed change rate to the deterioration index of No. 14. Next, the corrected degradation index is integrated by the integrator 31, and the priority determination circuit 32 assigns a higher startup priority to the gas turbines 11 to 14 having smaller integration values of the degradation index.

Then, the start specifying device 14 outputs a start command to the first to fourth axis controllers 21 to 24 connected to the first to fourth axis gas turbines 11 to 14 having a high start priority.

As described above, in the gas turbine startup control device 6g according to the present embodiment, the startup priority is determined based on the deterioration index corrected using the absolute value of the rate of change in the rotation speed of the gas turbine. Therefore, the starting priorities of the first to fourth shaft gas turbines 11 to 14 can be determined with higher accuracy than the gas turbine start control device 6f according to the sixth embodiment, and the predetermined gas turbines 11 to 14 can be determined. It is possible to further prevent an increase in the number of times of activation of only one.

Therefore, the combined cycle power plant can be operated more appropriately, and the gas turbine 1
The life of the machines such as 1 to 14 can be made more uniform. The gas turbine activation control device 6g in the combined cycle power plant according to the present embodiment is variously modified without departing from the gist, similarly to the gas turbine activation control device 6a according to the first embodiment. it can.

(Eighth Embodiment) The arrangement of the gas turbine start controller according to the present embodiment is the same as the gas turbine start controller 6a according to the first embodiment shown in FIG.
Since the arrangement state is the same as that described above, the description is omitted here.

That is, the gas turbine start-up control device according to the present embodiment includes first to fourth axis controllers 21 to 21.
24, the first to fourth axis controllers 21 to 24 start the first to fourth axis gas turbines 11 to 14 when the first to fourth axis controllers 21 to 24 input the start instruction.

FIG. 10 is a block diagram showing a configuration example of a gas turbine start-up control device in the combined cycle power plant according to the present embodiment. The same parts as those in FIG. It is omitted or briefly described, and only different portions will be described in detail here.

That is, in the gas turbine activation control device 6h according to the present embodiment, the temperature sensor 7 of the gas turbine activation control device 6a according to the first embodiment is mainly used.
And a fuel input amount sensor 44 is provided instead.

The fuel input sensor 44 measures the fuel input to the combustor 4 of each of the first to fourth shaft gas turbines 11 to 14 and outputs the measurement result to the storage device 8h. The storage device 8h stores the fuel input amounts of the first to fourth shaft gas turbines 11 to 14 measured by the fuel input amount sensor 44 as a history.

The computing unit 30h inputs the history stored in the storage device 8h, and outputs the first to fourth shaft gas turbines 11h.
-14 are determined. The deterioration indexes of the first to fourth shaft gas turbines 11 to 14 have an exponential relationship with the fuel input amounts of the gas turbines 11 to 14.

Accordingly, the computing unit 30h calculates the fuel injection amount for each of the first to fourth shaft gas turbines 11 to 14 to obtain a deterioration index, and outputs the deterioration index to the integrator 31. The operation of the gas turbine activation control device 6h configured as described above will be described.

First, the fuel input amounts of the first to fourth shaft gas turbines 11 to 14 measured by the fuel input amount sensor 44 are stored in the storage device 8h to create a history. next,
An arithmetic operation is performed on the history stored in the storage device 8h by the arithmetic unit 30h to obtain a deterioration index.

Next, the deterioration index is integrated by the integrator 31, and the priority determination circuit 32 assigns a higher startup priority to the gas turbines 11 to 14 having a smaller integrated value of the deterioration index. Then, the start designating device 33 is connected to the first shaft to the fourth shaft gas turbines 11 to 14 having the highest start priority.
A start command is output to the fourth axis controllers 21 to 24.

As described above, in the gas turbine activation control device 6h according to the present embodiment, the history of the fuel input amounts of the first to fourth shaft gas turbines 11 to 14 stored in the storage device 8h is used. Then, the computing unit 30h and the integrator 31 determine the integrated value of the deterioration index, and the smaller the integrated value of the deterioration index determined by the priority determination circuit 32, the higher the activation priority is determined. A start command is output to the first to fourth axis controllers 21 to 24 connected to the first to fourth axis gas turbines 11 to 14 having a high start priority.

Therefore, in order to determine the starting priority of the first to fourth shaft gas turbines 11 to 14, it is possible to prevent the number of startups of only the predetermined gas turbines 11 to 14 from increasing, and to operate the combined cycle power plant. Can be performed appropriately, and the life of machines such as the gas turbines 11 to 14 can be made uniform.

The gas turbine start-up control device 6h in the combined cycle power plant according to the present embodiment is variously modified without departing from the gist thereof, similarly to the gas turbine start-up control device 6a according to the first embodiment. Can be implemented.

(Ninth Embodiment) The arrangement of the gas turbine start control device according to the present embodiment is the same as the gas turbine start control device 6a according to the first embodiment shown in FIG.
Since the arrangement state is the same as that described above, the description is omitted here.

That is, the gas turbine start-up control device according to the present embodiment includes first to fourth axis controllers 21 to 21.
24, the first to fourth axis controllers 21 to 24 start the first to fourth axis gas turbines 11 to 14 when the first to fourth axis controllers 21 to 24 input the start instruction.

FIG. 11 is a block diagram showing a configuration example of a gas turbine start-up control device in the combined cycle power plant according to the present embodiment. The same parts as those in FIG. It is omitted or briefly described, and only different portions will be described in detail here.

That is, in the gas turbine activation control device 6i according to the present embodiment, mainly, the temperature sensor 7 of the gas turbine activation control device 6a according to the first embodiment is mainly used.
In place of the NO _x emission amount sensor 45.

The NO _x emission amount sensor 45 includes a first axis to a fourth axis.
Emissions of the NO _x produced by the combustion of the fuel in the axial gas turbine 11 to 14 were measured, and outputs the measurement result in the storage device 8i.

The storage device 8i stores the NO _x emission amount sensor 45.
1st to 4th shaft gas turbines 11 to 11 measured by
Storing NO _x emissions of 14 as a history. Arithmetic unit 30
For i, the history stored in the storage device 8i is input, and the respective deterioration indexes of the first to fourth shaft gas turbines 11 to 14 are obtained.

The deterioration indexes of the first to fourth shaft gas turbines 11 to 14 have an exponential relationship with the NO _x emissions of the gas turbines 11 to 14. Therefore, the arithmetic unit 30i is configured to control the first to fourth shaft gas turbines 11 to 14.
NO _x emissions to the exponent operation seeking deterioration index, and outputs to the integrator 31 for each.

The operation of the gas turbine activation control device 6i configured as described above will be described. First, a history storing NO _x emissions of the first shaft to the fourth shaft gas turbine 11 to 14 as measured by the NO _x emissions sensor 45 in the storage device 8i.

Next, the history stored in the storage device 8i is
An arithmetic operation is performed by the arithmetic unit 30i to obtain a deterioration index. next,
The integrator 31 integrates the deterioration indices of the first to fourth shaft gas turbines 11 to 14, and the priority determination circuit 32 assigns a higher startup priority to the gas turbines 11 to 14 having smaller integrated values of the deterioration indices.

Then, the start specifying device 33 outputs a start command to the first to fourth axis controllers 21 to 24 connected to the first to fourth axis gas turbines 11 to 14 having a high start priority.

[0158] As described above, in the gas turbine starting control device 6i according to the present embodiment, the NO _x emissions history of the first shaft to the fourth shaft gas turbine 11 to 14 stored in the storage device 8i The computing unit 30i and the integrator 31 determine the integrated value of the deterioration index based on the
It is determined that the smaller the integral value of the deterioration index obtained is, the higher the start priority is, and the start specifying device 33 is connected to the first to fourth shaft gas turbines 11 to 14 having the high start priority. A start command is output to the first to fourth axis controllers 21 to 24.

Therefore, in order to determine the starting priority of the first to fourth shaft gas turbines 11 to 14, it is possible to prevent the number of startups of only the predetermined gas turbines 11 to 14 from increasing and to operate the combined cycle power plant. Can be performed appropriately, and the life of machines such as the gas turbines 11 to 14 can be made uniform.

The gas turbine start-up control device 6i in the combined cycle power plant according to the present embodiment is variously modified without departing from the gist thereof, similarly to the gas turbine start-up control device 6a according to the first embodiment. Can be implemented.

(Tenth Embodiment) The arrangement of the gas turbine start control device according to the present embodiment is the same as the gas turbine start control device 6 according to the first embodiment shown in FIG.
Since this is the same as the arrangement state of a, the description is omitted here.

That is, the gas turbine start-up control device according to the present embodiment includes the first to fourth axis controllers 21 to 21.
24, the first to fourth axis controllers 21 to 24 start the first to fourth axis gas turbines 11 to 14 when the first to fourth axis controllers 21 to 24 input the start instruction.

FIG. 12 is a block diagram showing a configuration example of a gas turbine activation control device in a combined cycle power plant according to the present embodiment. The same parts as those in FIG. It is omitted or briefly described, and only different portions will be described in detail here.

That is, in the gas turbine start-up control device 6j according to the present embodiment, a gas turbine exhaust gas temperature sensor 4 is mainly used instead of the start / stop counter 37 of the gas turbine start-up control device 6d according to the fifth embodiment.
6, a compressor outlet pressure sensor 47 in place of the timer 40, and a turbine inlet temperature calculator 48 in place of the divider 39.

The gas turbine exhaust gas temperature sensor 46 measures the temperature of the exhaust gas generated by the combustion of the fuel in the first to fourth shaft gas turbines 11 to 14, and outputs the measurement result to the turbine inlet temperature calculator 48. .

The compressor outlet pressure sensor 47 is provided at the compressed gas outlet of the compressor 3 and measures the pressure of the compressed gas at the outlet of the compressor 3 (hereinafter referred to as “compressor outlet pressure”). Is output to the turbine inlet temperature calculator 48.

The turbine inlet temperature calculator 48 calculates the exhaust gas temperature of each of the first to fourth shaft gas turbines 11 to 14 inputted from the gas turbine exhaust gas temperature sensor 46 and the gas turbine inputted from the compressor outlet pressure sensor 47. 11-14
A predicted temperature at the inlet of the turbine 5 is determined from the compressor outlet pressure for each compressor.

Here, a method for obtaining the turbine inlet temperature from the gas turbine exhaust gas temperature and the compressor outlet pressure will be described. Assuming that the pressure of the gas is P and the volume is V, the adiabatic (pretrope) change is expressed by equation (1) with k = about 1.33.

P · V ^k = constant (1) k: about 1.33 Further, the relationship between the gas pressure P, the volume V, and the absolute temperature T is expressed by the equation (2) from Boyle-Charles' law. Is done.

(PV) / T = constant (2) Here, equation (3) is obtained by raising both sides of equation (2) to the k-th power. (P ^k · V ^k ) / T ^k = constant (3) Further, the left side of equation (1) is divided by the left side of equation (3), and the right side of (1) is similarly divided by the right side of equation (3). By erasing V, equation (4) is obtained.

T ^k / P ^(k−1) = constant (4) The equation (4) obtained in this way gives the turbine inlet temperature T
i, the compressor outlet pressure Pc, and the gas turbine exhaust gas temperature Te, the gas pressure P at the gas turbine outlet
a By substituting the atmospheric pressure, equation (5) is obtained.

[0172] ^{Ti k / Pc (k-1} ) = Te k / Pa (k-1) ... (5) Ti: turbine inlet temperature Te: the gas turbine exhaust gas temperature Pc: compressor outlet pressure Pa: Gas turbine outlet pressure ( Therefore, the equation (5) obtained in this manner is modified and solved for the turbine inlet temperature Ti, so that the turbine inlet temperature Te and the compressor outlet pressure Pc are used to determine the turbine inlet temperature. Equation (6) for obtaining the temperature Ti is obtained.

Ti = Te · (Pc / Pa) ^{((k−1) / k)} (6) That is, the turbine inlet temperature calculator 48 obtains the predicted temperature at the inlet of the turbine 5 according to the equation (6) and stores it. Device 8j
Output to

The storage device 8j stores, as a history, the predicted temperatures at the turbine 5 inlet of the first to fourth gas turbines 11 to 14 obtained by the turbine inlet temperature calculator 48. Arithmetic unit 3
0j inputs the history stored in the storage device 8j,
The deterioration index of each of the first to fourth shaft gas turbines 11 to 14 is obtained.

As described in the first embodiment, the deterioration index of the first to fourth shaft gas turbines 11 to 14 is determined by the temperature at the inlet of the turbine 5 of each gas turbine 11 to 14. And has an exponential relationship.

Therefore, for each of the first to fourth shaft gas turbines 11 to 14, the calculator 30j calculates the deterioration index by calculating the exponential temperature of the predicted temperature at the inlet of the turbine 5 obtained by the equation (6). 12 is output.

The operation of the gas turbine activation control device 6j configured as described above will be described. First, the first to fourth shafts of the gas turbines 11 to 14 measured by the gas turbine exhaust gas temperature sensor 46, and the first to fourth shafts measured by the compressor outlet pressure sensor 27. From the compressor outlet pressure Pc of the gas turbine generators 11 to 14, the turbine inlet temperature calculator 4
8 is a first to fourth shaft gas turbine 11 according to equation (6).
Of the turbine 5 inlet of each of the gas turbines 11 to 14 is calculated.
i is stored in the storage device 8j to create a history.

Next, the history stored in the storage device 8j is
An arithmetic operation is performed by an arithmetic unit 30j to obtain a deterioration index. next,
The integrator 31 integrates the deterioration index, and the priority determination circuit 32 determines the gas turbines 11 to 1 having a small integrated value of the deterioration index.
A higher startup priority is assigned to about four.

Then, the start specifying device 33 outputs a start command to the first to fourth axis controllers 21 to 24 connected to the first to fourth axis gas turbines 11 to 14 having a high start priority.

As described above, in the gas turbine start-up control device 6j according to the present embodiment, the predicted temperature Ti at the inlet of the turbine 5 determined by the equation (6) from the gas turbine exhaust gas temperature Te and the compressor outlet pressure Pc. And the integrator 31 determine the integral value of the degradation index based on the history of the above, and determine that the smaller the integral value of the degradation index determined by the priority determination circuit 32 is, the higher the activation priority is, and specify the activation. The device 33 outputs a start command to the first to fourth axis controllers 21 to 24 connected to the first to fourth axis gas turbines 11 to 14 having the higher start priority.

Therefore, in order to determine the starting priority of the first to fourth shaft gas turbines 11 to 14, it is possible to prevent an increase in the number of starts of only the predetermined gas turbines 11 to 14, and to operate the combined cycle power plant. Can be performed appropriately, and the life of machines such as the gas turbines 11 to 14 can be made uniform.

The gas turbine activation control device 6j in the combined cycle power plant according to the present embodiment is variously modified in the same manner as the gas turbine activation control device 6a according to the first embodiment without departing from the gist thereof. Can be implemented.

[0183]

As described above, in the combined cycle power plant control apparatus according to the present invention, the deterioration index calculating means includes a plurality of gas turbines based on the history of values indicating the usage states of the plurality of gas turbines. The index of the history of the deterioration is obtained by calculating the index of the deterioration, the integration means obtains the integrated value of the deterioration index of the plurality of gas turbines,
The starting priority determining means determines the starting priority of the plurality of gas turbines from the integrated value of the deterioration index of the plurality of gas turbines, and the starting designating means determines the starting priority of the plurality of gas turbines according to the starting priority of the plurality of gas turbines. Of the gas turbines to be started in accordance with the required load amount.

Further, in the combined cycle power plant control apparatus according to another invention, the random number generating means generates a random number assigned to a plurality of gas turbines, and the startup priority determining means is assigned to the plurality of gas turbines. The starting priority of the plurality of gas turbines is determined by a random number, and the start designating means starts the gas to be started according to the load request amount from the plurality of gas turbines according to the starting priority of the plurality of gas turbines. Specify the turbine.

As described above, when the combined cycle power plant control apparatus according to the present invention is applied, since the starting priority of a plurality of gas turbines is determined, it is possible to prevent an increase in the number of starting of only a predetermined gas turbine. it can. Therefore, the combined cycle power plant can be operated properly, and the life of a machine such as a gas turbine can be made uniform.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an example of an arrangement state of a gas turbine startup control device in a combined cycle power plant according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration example of a gas turbine startup control device according to the embodiment.

FIG. 3 is a diagram showing a relationship between a deterioration index of the gas turbine and a temperature at a gas turbine inlet.

FIG. 4 is a block diagram showing a configuration example of a gas turbine startup control device in a combined cycle power plant according to a second embodiment of the present invention.

FIG. 5 is a block diagram showing a configuration example of a gas turbine startup control device in a combined cycle power plant according to a third embodiment of the present invention.

FIG. 6 is a block diagram showing a configuration example of a gas turbine activation control device in a combined cycle power plant according to a fourth embodiment of the present invention.

FIG. 7 is a block diagram showing a configuration example of a gas turbine startup control device in a combined cycle power plant according to a fifth embodiment of the present invention.

FIG. 8 is a block diagram showing a configuration example of a gas turbine startup control device in a combined cycle power plant according to a sixth embodiment of the present invention.

FIG. 9 is a block diagram showing a configuration example of a gas turbine startup control device in a combined cycle power plant according to a seventh embodiment of the present invention.

FIG. 10 is a block diagram showing a configuration example of a gas turbine startup control device in a combined cycle power plant according to an eighth embodiment of the present invention.

FIG. 11 is a block diagram showing a configuration example of a gas turbine startup control device in a combined cycle power plant according to a ninth embodiment of the present invention.

FIG. 12 is a block diagram showing a configuration example of a gas turbine startup control device in a combined cycle power plant according to a tenth embodiment of the present invention.

FIG. 13 is a conceptual diagram showing an example of a conventional gas turbine startup operation.

FIG. 14 is a diagram showing an example of a relationship between a daily output curve of a combined cycle power plant and start timings of a plurality of gas turbines.

[Explanation of symbols]

11 to 14 Gas turbines 21 to 24 Controller 3 Compressor 4 Combustor 5 Turbine 6a to 6j Gas turbine start-up controller 7 Temperature sensors 8a, 8c, 8d, 8f to 8j Storage devices 30a, 30c , 30d, 30f to 30j arithmetic unit 31 integrator 32 priority determination circuit 33 start-up specifying device 34b, 34g adder 35b, 35g differential unit 36b, 36g absolute value arithmetic unit 37 start-stop counter 39 ... divider 40 ... timer 41 ... random number generator 42 ... power generation amount sensor 43 ... rotation counter 44 ... fuel input amount sensors 45 ... NO _x emissions sensor 46 ... gas turbine exhaust gas temperature sensor 47 ... compressor outlet pressure sensor 48 … Temperature inlet temperature calculator

──────────────────────────────────────────────────続 き Continued on front page (51) Int.Cl. ⁶ Identification code FI F02C 9/00 F02C 9/00 A

Claims (10)

[Claims] 1. A vehicle comprising: a plurality of gas turbines; at least one steam turbine; and at least one generator for receiving rotational power from the plurality of gas turbines and the at least one steam turbine. A control apparatus for a combined cycle power plant, comprising: inlet temperature measuring means for measuring a temperature of a turbine inlet in the plurality of gas turbines; and a turbine inlet temperature of the plurality of gas turbines measured by the inlet temperature measuring means. Storage means for storing the history of the plurality of gas turbines stored in the storage means, and calculating the deterioration index indicating the state of deterioration of the plurality of gas turbines by performing an index calculation of the history of the turbine inlet temperatures of the plurality of gas turbines. Index calculating means, and integrated values of deterioration indexes of the plurality of gas turbines obtained by the deterioration index calculating means Integrating means for obtaining, starting priority determining means for determining starting priority of the plurality of gas turbines from an integrated value of the deterioration index of the plurality of gas turbines obtained by the integrating means, and starting priority determining Starting designation means for designating a gas turbine to be started in accordance with a load request amount from the plurality of gas turbines according to the starting priority of the plurality of gas turbines determined by the means. A combined cycle power plant control device. 2. The combined cycle power plant control device according to claim 1, wherein a turbine inlet temperature of the plurality of gas turbines measured by the inlet temperature measuring means is differentiated to obtain a turbine inlet temperature of the plurality of gas turbines. Differentiating means for calculating the rate of change in temperature of the gas turbine; absolute value calculating means for calculating the absolute value of the temperature change rate of the turbine inlet temperatures of the plurality of gas turbines obtained by the differentiating means; Addition of correcting the deterioration index of the plurality of gas turbines by adding the absolute value of the temperature change rate of the turbine inlet temperature of each gas turbine obtained by the absolute value calculating means to the deterioration index of the plurality of gas turbines. And a means for controlling a combined cycle power plant. 3. A gas turbine comprising: a plurality of gas turbines; at least one steam turbine; and at least one generator for receiving rotational power from the plurality of gas turbines and the at least one steam turbine. A control device for a combined cycle power plant, comprising: a counter for counting the number of start / stop of the plurality of gas turbines; and a history of the number of start / stop of the plurality of gas turbines counted by the counter. And a deterioration index calculating means for calculating an index of the history of the number of start / stop times of the plurality of gas turbines stored by the storage means to obtain a deterioration index indicating a state of deterioration of the plurality of gas turbines. And an integrating means for calculating an integrated value of the deterioration index of the plurality of gas turbines obtained by the deterioration index calculating means. Starting priority determining means for determining the starting priority of the plurality of gas turbines from the integrated values of the deterioration indexes of the plurality of gas turbines obtained by the integrating means; and determining by the starting priority determining means. Starting designation means for designating, from the plurality of gas turbines, a gas turbine to be started in accordance with a load request amount, in accordance with the determined starting priority of the plurality of gas turbines. Combined cycle power plant control device. 4. A gas turbine comprising: a plurality of gas turbines; at least one steam turbine; and at least one generator for receiving rotational power from the plurality of gas turbines and the at least one steam turbine. A control device for a combined cycle power plant, comprising: a counter for counting the number of times of starting and stopping the plurality of gas turbines; and a timer for measuring a time required for starting and stopping the plurality of gas turbines, Division means for calculating a start / stop count / time value by dividing the start / stop count of the plurality of gas turbines counted by the counter by the time required for start / stop of each gas turbine measured by the timer; A storage device for storing a history of the number of times of start / stop of a plurality of gas turbines / time value obtained by the dividing means. A deterioration index calculating means for calculating an index of the history of the number of times of start / stop / time value of the plurality of gas turbines stored by the storage means to obtain a deterioration index indicating a state of deterioration of the plurality of gas turbines; Integrating means for calculating an integrated value of the deterioration index of the plurality of gas turbines obtained by the deterioration index calculating means; and integrating the plurality of gas turbines from the integrated values of the deterioration indexes of the plurality of gas turbines obtained by the integrating means. Starting priority determining means for determining the starting priority of the gas turbine, and a load from the plurality of gas turbines according to the starting priorities of the plurality of gas turbines determined by the starting priority determining means. Start-up designating means for designating a gas turbine to be started in accordance with a required amount; Apparatus. 5. A gas turbine comprising: a plurality of gas turbines; at least one steam turbine; and at least one generator for receiving rotational power from the plurality of gas turbines and the at least one steam turbine. A control device for a combined cycle power plant, comprising: a random number generation unit configured to generate a random number assigned to each of the plurality of gas turbines; and a random number assigned by the random number generation unit. Starting priority determining means for determining a starting priority; and, according to a load request amount, from among the plurality of gas turbines, according to a starting priority of the plurality of gas turbines determined by the starting priority determining means. And a start-up designating means for designating a gas turbine to be started. Runt control device. 6. A gas turbine comprising: a plurality of gas turbines; at least one steam turbine; and at least one generator for receiving rotational power from the plurality of gas turbines and the at least one steam turbine. A control device for a combined cycle power plant, comprising: a power generation amount measurement unit configured to measure a power generation amount generated by rotational power of the plurality of gas turbines; and a plurality of gas turbines measured by the power generation amount measurement unit. Storage means for storing a history of the power generation amount of the plurality of gas turbines, an index calculation is performed on the history of the power generation amounts of the plurality of gas turbines stored by the storage means, and a deterioration index indicating the state of deterioration of the plurality of gas turbines is calculated. A deterioration index calculating means to be obtained; and a product for calculating an integrated value of deterioration indexes of the plurality of gas turbines obtained by the deterioration index calculating means. Means, a starting priority determining means for determining a starting priority of the plurality of gas turbines from an integrated value of the deterioration indexes of the plurality of gas turbines obtained by the integrating means, and a starting priority determining means. Starting specification means for specifying a gas turbine to be started according to a load request amount from the plurality of gas turbines according to the determined starting priorities of the plurality of gas turbines. Combined cycle power plant control equipment. 7. The combined cycle power plant control device according to claim 6, wherein a gas turbine speed counter for counting the number of revolutions of the plurality of gas turbines, and a plurality of gas turbines counted by the gas turbine speed counter. Differentiating means for differentiating the rotation speed of the gas turbine to obtain the rotation rate change rate of the plurality of gas turbines, and absolute value for obtaining the absolute value of the rotation rate change rate of the plurality of gas turbines obtained by the differentiation means Calculating means for adding the absolute value of the rate of change of the number of revolutions of each gas turbine obtained by the absolute value calculating means to the deterioration index of the plurality of gas turbines obtained by the deterioration index calculating means, Adding means for correcting a deterioration index of one of the gas turbines. The plant control system. 8. A gas turbine comprising: a plurality of gas turbines; at least one steam turbine; and at least one generator for receiving rotational power from the plurality of gas turbines and the at least one steam turbine. A control device for a combined cycle power plant, comprising: a fuel input amount measuring unit configured to measure an amount of fuel input to a combustor of the plurality of gas turbines; and a plurality of gases measured by the fuel input amount measuring unit. Storage means for storing a history of the amount of fuel injected into the turbine; and an index calculation of the history of the amount of fuel injected into the plurality of gas turbines stored by the storage means to indicate a state of deterioration of the plurality of gas turbines. A deterioration index calculating means for obtaining a deterioration index, and calculating an integrated value of the deterioration indexes of the plurality of gas turbines obtained by the deterioration index calculating means. Integrating means; starting priority determining means for determining the starting priority of the plurality of gas turbines from an integrated value of the deterioration index of the plurality of gas turbines obtained by the integrating means; and the starting priority determining means Starting designation means for designating, from the plurality of gas turbines, a gas turbine to be started according to a load request amount, according to the starting priorities of the plurality of gas turbines determined by the above. Combined cycle power plant control device. 9. A gas turbine comprising: a plurality of gas turbines; at least one steam turbine; and at least one generator for receiving rotational power from the plurality of gas turbines and the at least one steam turbine. a control apparatus of a combined cycle power plant comprising: a NO _x emission measuring means for measuring the emission of the NO _x generated by the combustion of the fuel in said plurality of gas turbines, by the NO _x emission measuring means Storage means for storing a history of measured NO _x emissions of the plurality of gas turbines; and an index calculation of the histories of the plurality of gas turbines stored by the storage means, thereby deteriorating the plurality of gas turbines. A deterioration index calculating means for obtaining a deterioration index indicating a state of the gas turbine; and a plurality of gas turbines obtained by the deterioration index calculating means. Integrating means for obtaining an integral value of the gasification index; and starting priority determining means for determining the starting priority of the plurality of gas turbines from the integrated values of the deterioration indexes of the plurality of gas turbines obtained by the integrating means. Starting designation means for designating a gas turbine to be started according to a load request amount, from among the plurality of gas turbines, according to the starting priority of the plurality of gas turbines determined by the starting priority determination means; A combined cycle power plant control device comprising: 10. A gas turbine comprising: a plurality of gas turbines; at least one steam turbine; and at least one generator for receiving rotational power from the plurality of gas turbines and the at least one steam turbine. An exhaust gas temperature measuring means for measuring a temperature of exhaust gas generated by combustion of the fuel in the plurality of gas turbines, and the compressed gas at an outlet of the plurality of compressors. Compressor outlet pressure measuring means for measuring the pressure of exhaust gas, exhaust gas temperatures in a plurality of gas turbines measured by the exhaust gas temperature measuring means, and outlets of the plurality of compressors measured by the compressor outlet pressure measuring means Inlet prediction for obtaining a predicted temperature at the turbine inlet in the plurality of gas turbines from the gas pressure Temperature calculating means, storing means for storing a history of predicted temperatures at the turbine inlets of the plurality of gas turbines determined by the predicted inlet temperature calculating means, and turbines of the plurality of gas turbines stored by the storing means A deterioration index calculating means for calculating a deterioration index indicating a state of deterioration of the plurality of gas turbines by calculating an index of a history of the predicted temperature at the inlet; and a deterioration index of the plurality of gas turbines calculated by the deterioration index calculating means. Integrating means for obtaining an integral value of; a starting priority determining means for determining a starting priority of the plurality of gas turbines from an integrated value of the deterioration index of the plurality of gas turbines obtained by the integrating means; According to the startup priority of the plurality of gas turbines determined by the startup priority determination means, From combined cycle power plant controller for a start designating means for designating a gas turbine to activate in response to load demand, characterized by comprising a.