JP3951652B2 - Gas turbine power generation equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a gas turbine power generation facility to which a regenerative reheat cycle is applied and an operation method thereof.
[0002]
[Prior art]
In a gas turbine power generation facility that uses a gas turbine to drive a generator, as one means for improving power generation efficiency without increasing the turbine inlet temperature, the gas turbine power generation facility includes a first turbine and a generator for driving a compressor. A configuration in which the second turbine for driving is provided on different rotating shafts can be mentioned. As an example in which such a configuration is actually applied, for example, IGTI, Global Gas Turbine News, Volume 39, Number 1 (1999), pages 4 to 8 (IGTI, Global Gas Turbine News , Volume 39, No. 1 (1999), PP 4-8).
[0003]
In the gas turbine power generation facility having such a configuration, since misfire leads to immediate stoppage of power generation, a fuel that can ensure the combustion stability of liquefied natural gas, city gas, etc. relatively easily is used. In addition, a variable transmission provided between the second turbine used for driving the generator and the generator keeps the number of revolutions of the generator constant and matches the output frequency with the customer.
[0004]
[Problems to be solved by the invention]
One means for further improving the power generation efficiency of the gas turbine power generation facility related to the conventional technology described above is to increase the turbine inlet temperature. However, when the turbine inlet temperature is made higher, heat resistance of the material used for the turbine and cooling of the turbine blades are required, and there is also a problem that the NOx concentration in the exhaust gas increases.
[0005]
In addition, in a gas turbine power generation facility related to the prior art, if a misfire occurs, power generation is immediately stopped, so coal gasification gas, residual oil reforming gas, wood dry distillation gas, etc., which are relatively difficult to ensure combustion stability, etc. It is very difficult to drive using low-calorie gas.
[0006]
An object of the present invention is to provide a gas turbine power generation facility that can improve the power generation efficiency without increasing the temperature at the turbine inlet, and can cope with the increased use of fuel.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, a gas turbine power generation facility according to the present invention includes a compressor that compresses air, a first combustor that combusts air compressed by the compressor and a first fuel, and the first combustor. A compressor first turbine that expands combustion gas generated in one combustor to extract rotational power, a first generator that is provided on the same shaft as the first turbine and is driven by the first turbine to generate power; Provided on a rotating shaft different from that of the first turbine, the exhaust gas of the first turbine is expanded to extract rotational power, and between the second turbine, the exhaust from the second turbine, and the discharge air from the compressor A regenerative heat exchanger for exchanging heat with the second turbine, the second generator provided on the same axis as the second turbine and driven by the second turbine to generate electric power, and the power generation frequency generated by the first generator And the second In a gas turbine power generation facility including an inverter that matches each power generation frequency generated by an electric machine with a system, between the first turbine and the second turbine, exhaust gas and second fuel of the first turbine And a second combustor for burning the fuel.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a gas turbine power generation facility according to the present invention will be described in detail with reference to FIG.
[0009]
FIG. 1 shows a system configuration of an embodiment of a gas turbine power generation facility according to the present invention. This gas turbine power generation facility is a two-shaft regenerative gas turbine in which a temperature of 600 ° C. or higher is set between the first turbine 3 and the second turbine 5 having a maximum turbine inlet gas temperature of 900 to 1050 ° C. The second combustor 4 that combusts the held exhaust gas of the first turbine 3 and the second fuel 23 is provided. Each component device and its operation in the gas turbine power generation facility of this embodiment will be described.
[0010]
After the air 21 sucked from the outside is compressed by the compressor 1, heat is recovered from the exhaust from the second turbine 5 in the regenerative heat exchanger 11 and is preheated and led to the first combustor 2.
[0011]
In the first combustor 2, the air compressed by the compressor 1 is mixed and combusted with the first fuel 22 to become high-temperature combustion gas, and flows into the first turbine 3 at a temperature of 900 to 1050 ° C. at the maximum.
[0012]
The first turbine 3 adiabatically expands the combustion gas flowing in from the first combustor 2 to extract the energy of the combustion gas as rotational power, and drives the compressor 1 and the first generator 6. Here, the compressor 1, the first generator 6, and the first turbine 3 are provided on the first rotating shaft 31.
[0013]
The second combustor 4 mixes and burns the exhaust from the first turbine 3 maintaining a temperature of 600 ° C. or higher and the second fuel 23 to generate high-temperature combustion gas, and drives the second generator 10. Supply to the second turbine 5. Here, the second combustor 4 does not necessarily have the same specifications as the first combustor 2.
[0014]
The second turbine 5 does not necessarily have the same specifications as the first turbine 3 except for the maximum inlet temperature, and rotates the combustion gas energy by adiabatically expanding the combustion gas flowing in from the second combustor 4. The second generator 10 is driven by taking it out as power. Here, the 2nd generator 10 and the 2nd turbine 5 are provided on the 2nd rotating shaft 32 different from the 1st rotating shaft 31 in which the compressor 1, the 1st generator 6, and the 1st turbine 3 were provided. ing.
[0015]
The exhaust from the second turbine 5 is recovered by heat in the regenerative heat exchanger 11 by heat exchange with the discharge air from the compressor 1 and then discharged outside the facility.
[0016]
The following two methods can be applied as a method of starting this gas turbine power generation facility.
[0017]
As a first method, compressed air is sent to the first turbine 3 to drive the first turbine 3, and when the rotational speed of the first rotating shaft 31 becomes equal to or higher than the self-supporting rotational speed, the first combustor 2 is driven. The first fuel 22 is supplied to and ignited.
[0018]
As a second method, the first generator 6 is used as a motor for starting the gas turbine power generation facility. That is, the compressor 1 and the first turbine 3 are driven by the first generator 6 that is a motor, and the first fuel is supplied to the first combustor 2 when the rotational speed of the first rotating shaft 31 becomes equal to or higher than the self-supporting rotational speed. 22 is supplied to ignite. When this starting method is adopted, the first generator 6 is used as a generator while the gas turbine power generation facility is generating power.
[0019]
Further, the operation of causing the output power of the gas turbine power generation facility to follow the load fluctuation of the demand destination is performed by changing the outputs of the first turbine 3 and the second turbine 5. The method of matching the frequency of output power with the customer is broadly divided into the following two methods.
[0020]
As a first method, the rotational speed change of the first rotating shaft 31 provided with the first turbine 3 and the first generator 6 and the second rotating shaft 32 provided with the second turbine 5 and the second generator 10 is changed. When allowing, the frequency of the electric power generated by the first generator 6 and the second generator 10 also changes, but by providing the inverter 7, the generated frequency is always matched with the demand destination. Further, a variable transmission may be provided instead of the inverter 7 to control the frequency of the generated power.
[0021]
As a second method, the rotational speed change of the first rotating shaft 31 provided with the first turbine 3 and the first generator 6 and the second rotating shaft 32 provided with the second turbine 5 and the second generator 10 is changed. If not allowed, the first turbine 3 and the second turbine 5 are controlled by controlling the magnetic field current of the first generator 6 and the second generator 10 or by controlling the rectifier output DC voltage input to the inverter 7. A constant rotation is performed by changing the load of the power source, and the power generation frequency is always matched with the customer.
[0022]
Next, another embodiment of the present invention will be described with reference to FIG.
[0023]
The gas turbine power generation facility shown in FIG. 2 has a two-split configuration of the compressor 1 in the gas turbine power generation facility shown in FIG. 1, and after compressing the air 21 sucked from the outside by the front compressor 8, the rear compressor 9, the latter compressor 9 compresses to a higher pressure and leads to the first combustor 2.
[0024]
Here, the front stage compressor 8, the second generator 10, and the second turbine 5 are provided on the second rotating shaft 32, and the rear stage compressor 9, the first generator 6, and the first turbine 3 perform the first rotation. It is provided on the shaft 31. Further, the pre-stage compressor 8 does not necessarily have the same specifications as the post-stage compressor 9.
[0025]
The following two methods can be broadly applied as methods for starting the gas turbine power generation facility.
[0026]
As a first method, compressed air is sent to the first turbine 3 to drive the first turbine 3, and the rotational speed of the first rotating shaft 31 provided with the first turbine 3 becomes equal to or higher than the self-supporting rotational speed. At that time, the first fuel 22 is supplied to the first combustor 2 to ignite.
[0027]
As a second method, the first generator 6 and the second generator 10 are used as motors for starting the gas turbine power generation facility. That is, the second generator 10 that is a motor causes the front compressor 8 and the second turbine 5 to be simultaneously driven by the first generator 6 that is a motor to drive the rear compressor 9 and the first turbine 3, thereby When the rotational speed of 31 becomes equal to or higher than the self-supporting rotational speed, the first fuel 22 is supplied to the first combustor 2 to ignite. When this starting method is adopted, the first generator 6 and the second generator 10 are used as generators while the gas turbine power generation facility is generating power.
[0028]
Further, the operation of causing the output power of the gas turbine power generation facility to follow the load fluctuation of the demand destination is performed by changing the outputs of the first turbine 3 and the second turbine 5. As a method for matching the frequency of the output power with the customer at this time, the same method as that of the above-described embodiment can be applied, and therefore it will not be described again here.
[0029]
Further, in the gas turbine power generation facility according to the present embodiment, especially when the compressor 1 has a two-part configuration, the gas turbine power generation according to the present embodiment is adopted by adopting a system configuration that incorporates means for humidifying the intake air. It is possible to further improve the power generation efficiency of the facility and increase the power generation output.
[0030]
An embodiment to which a system configuration incorporating a means for humidifying intake air is applied to a gas turbine power generation facility according to the present invention will be described with reference to FIG.
[0031]
In the present embodiment shown in FIG. 3, the compressor 1 of the gas turbine power generation facility has a two-part configuration, and the first stage compression is included in the system configuration in which a means for humidifying and cooling the air sucked into the first stage compressor 8 is provided. The intake path portion from the inlet portion of the machine 8 to the inlet portion of the regenerative heat exchanger 11 through the rear compressor 9 is shown.
[0032]
In the present embodiment, the compressor 1 is divided into two parts in the intake passage portion of the gas turbine power generation facility, the intake sprayer 12 is provided in the air suction portion of the front stage compressor 8, and water 24 is sprayed and sucked into the front stage compressor 8. By performing humidification / cooling of the air, it is possible to reduce the compressor inlet temperature and increase the air flow rate. Here, the front-stage compressor 8 and the rear-stage compressor 9 may be provided on the same rotation shaft, but may be provided on different rotation shafts similarly to the configuration of the gas turbine power generation facility shown in FIG. Further, in this case, the compressor 1 does not necessarily have a two-part configuration of the front-stage compressor 8 and the rear-stage compressor 9, and may have a configuration similar to the compressor in the gas turbine power generation facility shown in FIG.
[0033]
Next, another embodiment to which a system configuration incorporating a means for humidifying intake air is applied will be described with reference to FIG.
[0034]
FIG. 4 shows a system configuration in which the compressor 1 is divided into two parts and a means for humidifying and cooling the intake air compressed by the front-stage compressor 8 is provided. An intake path portion to the inlet portion of the regenerative heat exchanger 11 is shown.
[0035]
In the present embodiment, the compressor 1 is divided into two parts in the intake passage portion, and an intermediate sprayer 13 is provided between the front-stage compressor 8 and the rear-stage compressor 9 to spray water 24 and compressed by the front-stage compressor 8. By performing humidification / cooling of the intake air, it is possible to suppress a rise in the temperature of the intake air as the rear compressor 9 compresses the intake air to a higher pressure, and to reduce the compression power at the high pressure portion. Here, the front-stage compressor 8 and the rear-stage compressor 9 may be provided on the same rotation shaft, but may be provided on different rotation shafts similarly to the configuration of the gas turbine power generation facility shown in FIG.
[0036]
Next, another embodiment to which a system configuration incorporating a means for humidifying intake air is applied to the gas turbine power generation facility according to the present invention will be described with reference to FIG.
[0037]
FIG. 5 shows a system configuration in which the compressor 1 of the gas turbine power generation facility according to the present invention has a two-part configuration and is provided with a means for humidifying and cooling the intake air compressed by the rear-stage compressor 9. 4 shows an intake path portion from the inlet portion to the inlet portion of the regenerative heat exchanger 11 through the rear compressor 9.
[0038]
In the intake passage portion of the gas turbine power generation facility according to the present invention, the compressor 1 is divided into two parts, the humidifier 14 is provided at the discharge portion of the rear stage compressor 9, and water 24 is sprayed, and compressed by the rear stage compressor 9. By performing humidification / cooling of the intake air, the temperature of the intake air flowing into the regenerative heat exchanger 11 can be lowered, the amount of heat exchange in the regenerative heat exchanger 11 can be increased, and the power generation efficiency can be further improved. . Here, the front-stage compressor 8 and the rear-stage compressor 9 may be provided on the same rotation shaft, but may be provided on different rotation shafts similarly to the configuration of the gas turbine power generation facility shown in FIG. In this case, the compressor 1 does not necessarily have a two-split configuration of the front-stage compressor 8 and the rear-stage compressor 9, and may have the same configuration as the compressor in the gas turbine power generation facility shown in FIG.
[0039]
In the present embodiment, the system configuration incorporating the means for humidifying the intake air can be realized by changing the intake path portion as shown in FIG. 3, FIG. 4 and FIG. The means for humidifying each intake air shown in FIG. 3, FIG. 4 and FIG. 5 may be used independently, but the intake sprayer 12, the intermediate sprayer 13, the humidifier 14, the intake sprayer 12 and the intermediate The sprayer 13, the intermediate sprayer 13 and the humidifier 14, and the intake sprayer 12 and the humidifier 14 may be used in combination.
[0040]
Next, from the case where the configuration of the gas turbine power generation facility according to the present invention shown in FIG. 1 is adopted, and from IGTI, Global Gas Turbine News, Volume 39, Number 1 (1999), page 4. When the configuration of the gas turbine power generation facility related to the prior art introduced in Page 8 (IGTI, Global Gas Turbine News, Volume 39, No. 1 (1999), PP 4-8) is adopted, the heat balance calculation is performed. FIG. 6 shows the result of comparison between the gas turbine power generation facility according to the present invention and the gas turbine power generation facility according to the related art with respect to the power generation output and power generation efficiency obtained by calculation.
[0041]
In the heat balance calculation here, the gas turbine power generation facility of this embodiment and the gas turbine power generation facility related to the conventional technology are compared under the same conditions. IGTI, Global Gas Turbine News, Volume 39 (IGTI) Global Gas Turbine News, Volume 39, Number 1 (1999), pages 4 to 8 , No. 1 (1999), PP 4-8), the gas turbine power generation facility related to the prior art has a configuration in which the variable transmission is replaced with an inverter without an exhaust heat recovery device. Also, air flow rate, outside air temperature, outside air pressure, compressor efficiency, compression ratio, regenerative heat exchanger temperature efficiency, combustor combustion efficiency, turbine efficiency and expansion ratio of the first and second turbines, generator efficiency, inverter The efficiency was all the same, the turbine inlet temperature of the first turbine and the second turbine were both 910 ° C., and the first turbine exhaust gas temperature was 729 ° C. In order to simplify the calculation, the specific heat of the working fluid and fuel kerosene was constant and the pressure loss was ignored.
[0042]
According to this calculation result, when the gas turbine power generation facility of this embodiment is compared with the gas turbine power generation facility related to the prior art, the power generation output is increased by 18% and the power generation efficiency is improved by 29%.
[0043]
This is because, in the gas turbine power generation facility of this embodiment, the exhaust gas temperature from the first turbine is high, so that a relatively small amount of fuel is required to burn the exhaust gas from the first turbine again. Another reason is that the amount of regenerated heat exchange increases because the heat energy applied by the second combustor is recovered by the regenerative heat exchanger.
[0044]
Next, the operation method of the gas turbine power generation facility of the present embodiment described above will be described below.
[0045]
As an embodiment of a method for operating a gas turbine power generation facility, there is an operation method as described below.
[0046]
In the gas turbine power generation facility of the present embodiment, the first fuel 22 used in the first combustor 2 is a fuel capable of ensuring combustion stability, such as natural gas or oil, in order to avoid power generation from being stopped due to misfire or the like. Is used. The exhaust gas of the first turbine 3 having an inlet gas temperature of 900 to 1050 ° C. has a temperature of 600 ° C. or higher, has a low oxygen concentration, contains a large amount of inert gas such as carbon dioxide and water vapor, and has low NOx combustion. It is in a state where stability can be secured relatively easily. Furthermore, if the second combustor 4 misfires, the output power from the first generator 6 can be secured at least, so that the power generation is not stopped. Therefore, for example, it is possible to employ an operation method in which low-calorie gas such as coal gasification gas, residual oil reformed gas, and wood dry distillation gas is used as the second fuel 23. However, if misfire occurs in the second combustor 4, the power generation output will be reduced in addition to the power generation efficiency. For example, it is used in conjunction with the grid, and the power shortage of the power generation output for the required load power is purchased from the grid. Demand is limited as much as possible.
[0047]
Here, in order to ensure combustion stability in the second combustor 4 more easily, an auxiliary compressor 15 that sucks air from outside and compresses it as in the configuration of the gas turbine power generation facility shown in FIG. The air compressed by the auxiliary compressor 15 may be supplied to the second combustor 4 together with the exhaust from the first turbine 3 on the shaft on which the one turbine 3 and the second generator 10 are provided. As the intake air 25 of the auxiliary compressor 15, contaminated air containing a volatile organic compound such as toluene or benzene may be used instead of outside air.
[0048]
As another embodiment of the method of operating the gas turbine power generation facility according to the present invention, there is an operation method as described below.
[0049]
When the output power of the gas turbine power generation facility according to the present embodiment is operated following the load fluctuation of the demand destination, the flow rate of the fuel 22 used in the first combustor 2 is constant and is used in the second combustor 4. By adjusting the flow rate of the second fuel 23, the output of the second turbine 5 is adjusted, and the output power of the gas turbine power generation equipment itself is changed. That is, the minimum load of the demand destination is satisfied with the first generator 6, and the output power of the second generator 10 is added to the output power of the first generator 6 in accordance with the increase of the demand load. The output power of the gas turbine power generation facility itself is changed.
[0050]
As described above, in the gas turbine power generation facility of the present embodiment, the exhaust gas of the first turbine is between the first turbine and the second turbine, both having a maximum turbine inlet gas temperature of 900 to 1050 ° C. Power generation efficiency without increasing the turbine inlet temperature from 900 to 1050 ° C. by providing a second combustor that mixes and burns with fuel and raises the temperature of the second turbine inlet gas to 900 to 1050 ° C. Can be improved.
[0051]
In addition, the exhaust gas and fuel of the first turbine having a low oxygen concentration and having a temperature of 600 ° C. or higher are interposed between the first turbine and the second turbine having the highest turbine inlet gas temperature of 900 to 1050 ° C. Coal gasification gas, residual oil reforming gas, and wood dry distillation gas, which are relatively difficult to ensure combustion stability, with a system configuration that includes a second combustor that does not cause misfire to immediately stop power generation. Low calorie gas such as can be used as fuel.
[0052]
In addition, in a gas turbine power generation facility using a regenerative gas turbine having a two-shaft configuration, the heat energy added by the second combustor is recovered by the regenerative heat exchanger to increase the regenerative heat exchange amount, thereby increasing the turbine inlet temperature. The power generation efficiency can be improved without increasing the temperature.
[0053]
Therefore, according to the present embodiment, the power generation efficiency can be improved without increasing the turbine inlet temperature from 900 to 1050 ° C.
[0054]
【The invention's effect】
According to the present invention, it is possible to improve the power generation efficiency without increasing the turbine inlet temperature, and to provide a gas turbine power generation facility that can cope with the diversification of fuel.
[Brief description of the drawings]
FIG. 1 is a system configuration example of a regenerative reheat gas turbine power generation facility according to an embodiment of the present invention.
FIG. 2 is a system configuration example of a regenerative reheat gas turbine power generation facility including a two-part compressor according to another embodiment of the present invention.
FIG. 3 is a configuration example of an intake path portion of a regenerative reheat gas turbine power generation facility equipped with an intake sprayer according to another embodiment of the present invention.
FIG. 4 is a configuration example of an intake path portion in the case where an intermediate sprayer is provided in a regenerative reheat type gas turbine power generation facility including a two-split compressor according to another embodiment of the present invention.
FIG. 5 is a configuration example of an intake path portion of a regenerative reheat gas turbine power generation facility including a humidifier according to another embodiment of the present invention.
FIG. 6 is a comparison of power generation output and power generation efficiency of a gas turbine power generation facility according to another embodiment of the present invention and a gas turbine power generation facility related to the prior art.
FIG. 7 is a system configuration example of a regenerative reheat gas turbine power generation facility including an auxiliary compressor according to another embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Compressor, 2 ... 1st combustor, 3 ... 1st turbine, 4 ... 2nd combustor, 5 ... 2nd turbine, 6 ... 1st generator, 7 ... Inverter, 8 ... Pre-stage compressor, 9 ... Subsequent compressor, 10 ... second generator, 11 ... regenerative heat exchanger, 12 ... intake sprayer, 13 ... intermediate sprayer, 14 ... humidifier, 15 ... auxiliary compressor, 21 ... air, 22,23 ... fuel, 24 ... water, 25 ... auxiliary compressor intake, 31 ... first rotating shaft, 32 ... second rotating shaft.

Claims (8)

A compressor that compresses air; a first combustor that combusts air compressed by the compressor and a first fuel; and a combustion gas generated in the first combustor is expanded to extract rotational power and compress the air A first turbine that drives the machine , a first generator that is provided on the same shaft as the first turbine and that is driven by the first turbine to generate power, and a rotary shaft that is different from the first turbine, A second turbine for expanding the exhaust gas of the first turbine to extract rotational power; a regenerative heat exchanger for exchanging heat between the exhaust from the second turbine and the discharge air from the compressor; a second generator intends rows generator is driven by the second turbine provided with the turbine on the same axis as, the power frequency that is generated by said first generator, for generating a frequency that is generated by the second generator Each one with the system In the gas turbine power generation facility including the inverter to be operated, a second combustor for combusting the exhaust gas of the first turbine and the second fuel is provided between the first turbine and the second turbine. Gas turbine power generation equipment. A front stage compressor that sucks and compresses air from the outside, a rear stage compressor that is provided on a rotating shaft different from the front stage compressor and further compresses the discharge air of the front stage compressor, and is compressed by the rear stage compressor A first combustor that combusts air and first fuel, a first turbine that expands combustion gas generated in the first combustor to extract rotational power and drives the rear-stage compressor, and is the same as the first turbine a first generator intends rows generator driven by the first turbine is provided on the shaft, remove the rotational power by expanding the exhaust gas in the first turbine is provided on a different axis of rotation from said first turbine A second turbine that drives the front stage compressor, a regenerative heat exchanger that exchanges heat between the exhaust from the second turbine and the discharge air from the rear stage compressor, and the same axis as the second turbine Provided in the second tab A second generator intends rows generator driven by bottles, comprising a generator frequency that is generated, the inverter to match the line of each of the power generation frequency that is generated by the second generator by the first generator A gas turbine power generation facility comprising a second combustor for combusting exhaust gas and second fuel of the first turbine between the first turbine and the second turbine. . A compressor that compresses air; a first combustor that combusts air compressed by the compressor and a first fuel; and the compressor that expands the combustion gas generated in the first combustor to extract rotational power, and the compressor a first turbine to the highest turbine inlet gas temperature driving to 900 to 1050 ° C. and a first generator intends rows generator driven by the first turbine provided in said first turbine on the same axis as, 600 A second combustor that combusts the exhaust gas of the first turbine and the second fuel maintained at a temperature equal to or higher than ° C., and a combustion that is provided on a rotating shaft different from the first turbine and that is generated by the second combustor. Gas is expanded to extract rotational power, and heat exchange is performed between the second turbine having a maximum turbine inlet gas temperature of 900 to 1050 ° C., and the exhaust from the second turbine and the discharge air from the compressor. With regenerative heat exchanger A second generator intends rows generator is driven by the second turbine disposed in the second turbine and the same axis, and generating a frequency that is generated by the first generator, which is generated by the second generator In a gas turbine power generation facility provided with an inverter that matches each power generation frequency with the system, the second turbine and the second generator are provided on the same shaft, and suck in the air containing outside air or volatile organic compounds. A gas turbine power generation facility comprising an auxiliary compressor for compressing and supplying to the second combustor.   3. The gas turbine power generation facility according to claim 1, wherein water is sprayed at the compressor inlet or the front-stage compressor inlet, and the intake air to the compressor or the front-stage compressor is humidified and cooled. A gas turbine power generation facility characterized by comprising:   3. The gas turbine power generation facility according to claim 2, wherein water is sprayed between the front-stage compressor and the rear-stage compressor, and means for humidifying and cooling the air compressed by the front-stage compressor is provided. Gas turbine power generation equipment.   3. The gas turbine power generation facility according to claim 1, wherein water is sprayed at the compressor discharge unit or the second-stage compressor discharge unit, and the air compressed by the compressor or the second-stage compressor is humidified. A gas turbine power generation facility characterized in that means for cooling is provided.   The gas turbine power generation facility according to any one of claims 1 to 3, wherein the first fuel burned in the first combustor is a fuel having a higher calorie than the second fuel burned in the second combustor. Gas turbine power generation facility characterized by A compressor that compresses air; a first combustor that combusts air compressed by the compressor and a first fuel; and the compressor that expands the combustion gas generated in the first combustor to extract rotational power, and the compressor a first turbine to the highest turbine inlet gas temperature driving to 900 to 1050 ° C. and a first generator intends rows generator driven by the first turbine provided in said first turbine on the same axis as, 600 A second combustor that combusts the exhaust gas of the first turbine and the second fuel maintained at a temperature equal to or higher than ° C., and a combustion that is provided on a rotating shaft different from the first turbine and that is generated by the second combustor. Gas is expanded to extract rotational power, and heat exchange is performed between the second turbine having a maximum turbine inlet gas temperature of 900 to 1050 ° C., and the exhaust from the second turbine and the discharge air from the compressor. With regenerative heat exchanger A second generator intends rows generator is driven by the second turbine disposed in the second turbine and the same axis, and generating a frequency that is generated by the first generator, which is generated by the second generator In a method for operating a gas turbine power generation facility including an inverter that matches each power generation frequency with a system, a fuel flow rate used in the first combustor is constant, and a fuel flow rate used in the second combustor is adjusted. The operation method of the gas turbine power generation equipment characterized by changing the power generation output of said 1st generator and said 2nd generator by this.

Images