JP2002138854A - Service charging method and device for gas turbine with intake cooling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize the profitable operation of power generation facilities by reducing the burden of a power generation supplier on initial investment cost for the gas turbine power generation facilities using an intake cooling device for producing an increase in output power. SOLUTION: In a gas turbine power generation plant where the intake cooling device 6 for spraying water droplets into intake facilities 4 guiding intake air to a compressor in the gas turbine power generation plant owned by the power generation supplier is installed by a service supplier so that an increase in output power can be produced by the operation of the intake cooling device, a service rate is calculated corresponding to an increase in output power of the gas turbine due to the operation of the intake cooling device in accordance with operation data for the gas turbine and the intake cooling device and charged to the power generation supplier. The power generation supplier who pays the service rate can utilize the intake cooling device for producing an increase in output power of the gas turbine.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for processing usage fees of a gas turbine power plant.

[0002]

2. Description of the Related Art A power plant using a gas turbine as a power source has a problem that the output decreases because the air density decreases when the temperature in summer is high. As an additional facility for compensating for this decrease in output, there is, for example, an intake air cooling device disclosed in Japanese Patent No. 2877098 or the like, which sprays droplets onto the compressor intake air to lower the intake air temperature. This intake cooling device is generally installed at an own expense by a power generation company that owns a power generation plant.

[0003]

However, the installation of this intake cooling system for increasing the output increases the initial investment cost and increases the burden on the power generation company operating the power generation plant.

An object of the present invention is to realize an economical operation of a power generation facility by reducing the initial investment cost of a power generation company by a gas turbine power generation facility using an intake cooling device for increasing output. .

[0005]

SUMMARY OF THE INVENTION According to the present invention, a service provider installs an intake cooling device for spraying water droplets into an intake facility for guiding intake air to a compressor of a gas turbine power plant owned by a power generator. In a gas turbine power plant in which the output is increased by operating the intake cooling device, the usage fee corresponding to the increase in the output of the gas turbine due to the operation of the intake cooling device based on the operation data of the gas turbine and the intake cooling device. Is calculated, and the calculated usage fee is charged to a power generation company as a billing fee, so that the intake cooling device can be used.

Further, the present invention provides an intake cooling device for spraying water droplets in an intake facility for guiding intake air to a compressor of a gas turbine power plant owned by a power generation company, and operating the intake cooling device to operate the gas cooling device. In a gas turbine power plant configured to increase the output of a turbine, a storage device for storing an operation state of the gas turbine and the intake air cooling device is provided, and a data processing device for calculating based on data in the storage device is provided. A usage fee corresponding to an increase in the output of the gas turbine by operating the intake cooling device by the device is calculated, and the usage fee is provided to a power generation company as a billing fee.

[0007]

Embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of a gas turbine power generation system provided with an intake air cooling device showing the concept of an embodiment of the present invention. Power generation facility 1 including general gas turbine
Includes a gas turbine 2, a generator 3, an intake facility 4, and a control device 5 for controlling these as main equipment. The gas turbine 2 includes a compressor 2a for compressing intake air, a combustor 2c for injecting combustion into compressed air led from the compressor 2a to burn it, and a turbine 2b driven by combustion gas generated in the combustor 2c. Consists of

An intake equipment 4 for introducing intake air to the compressor 2a of the gas turbine 2 includes an intake humidification cooling type intake cooling device 6
Is added. There are various types of intake air cooling devices. In this example, an intake humidification cooling type intake device in which fine water droplets having a particle diameter of about 1 to 50 μm are sprayed into an intake equipment 4 disclosed in Japanese Patent No. 2877098. The cooling device 6 will be described as an example. The intake cooling device 6 guides water from a water tank 6c through a pipe having a control valve 6b,
It is configured to spray fine water droplets from a into the intake air of the compressor 2a. Some of the water droplets sprayed into the intake equipment 4 by the intake cooling device 6 evaporate in the intake equipment 4 to increase the density of the intake air by lowering the intake air temperature of the intake air introduced into the compressor 2a. It flows into the compressor 2a. Further, the unevaporated water droplets are pressurized in the compressor and evaporate, lowering the outlet temperature of the compressor 2a. Compressor 2
The water droplet evaporated in a becomes the working fluid of the turbine 2b.
These synergistic effects act to increase the output of the gas turbine 2.

[0010] Generally, the air-intake cooling device 6 is installed and managed by a power generation company that owns the power generation equipment 1 at its own expense, but in the embodiment of the present invention, it is different from the power generation company. The service provider installs and manages the air conditioner, lends the intake air cooling device 6 to the power generation company, the service business operator charges the power generation company for the usage fee, and if necessary, the air intake cooling device 6 fails. In such a case, the compensation paid for this will be paid to the power generation company.

The service provider installs a data management system 7 for billing the use of the intake air cooling device 6 and / or paying a compensation. The data management system 7 includes a data processing device 8 and a storage device 9 configured using a computer. The data processing device 8 includes an output increase amount calculation processing unit 8a and a usage charge calculation processing unit 8b.

Data processing device 8 of data management system 7
Is a communication line 10 from a control device 5 that operates the gas turbine 2 and the intake air cooling device 6 installed in the power generation facility 1.
The operation data of the gas turbine 2 and the intake air cooling device 6 is received through the storage device 9 and stored in the storage device 9 as an operation record. Then, based on the accumulated operation record data, the data processing device 8 causes the output increase amount calculation processing unit 8a to output an output that is an increase in the output of the generator 3 of the gas turbine 2 due to the operation of the intake cooling device 6. The amount of increase is calculated, and the usage fee calculation unit 8b calculates a usage fee corresponding to the output increase amount charged by the service provider to the power generation company. Further, the usage fee calculation unit 8b calculates a compensation paid to the power generation company when the intake air cooling device 6 breaks down, as necessary, based on the operation record data. Then, the data processing device 8 transmits the calculated usage fee and compensation money to the display device 11, which is an output device under the power generation company, and displays it to notify the power generation company.
The data processing device 8 may be installed on the power generation company side, and the data of the usage fee and the compensation may be changed to be transmitted to the service company. Further, the usage fee and the compensation money can be transmitted in a document printed using a printer.

The power generation company and the service company conclude a use contract prior to the installation of the intake cooling device 6 in the gas turbine power generation device. In this usage contract, in order to calculate the above usage fee, the relationship between the usage fee and the output increase (effect) due to the use of the intake air cooling device 6 is clarified. In addition, this use contract includes an intake cooling device 6 as necessary.
The content of compensation paid by the service provider to the power generator when the power supply fails may be included. The storage device 9 also stores, in addition to the operation data, a charge calculation program and a compensation calculation program, a calculation formula (constant) thereof, and a charge and compensation calculated. .

FIG. 2 is a flowchart showing a procedure for carrying out the present invention. Step 001 of setting up the equipment import data management system
An intake cooling device 6 having a water tank 6c, a control valve 6b, and a spray nozzle 6a for spraying water droplets of 50 μm is added to an intake facility 4 for guiding intake air to a compressor 2a of a gas turbine 2 owned by a power generation company. The control unit 5 is provided with a functional means for transmitting operation data for calculating the usage fee and the compensation fee, and delivering the data to the power generation company. In addition, a data management system 7 is installed. Step 002 of equipment / equipment → operation / operation data transmission The power generation company operates the gas turbine power generation plant, which is the power generation equipment 1, using the intake cooling device 6, and the control device 5 sequentially performs the intake cooling device and the gas supply. The operation data including the output of the turbine 2 is transmitted to the data management system 7 of the service provider. Step 003 of the calculation of the amount of increase in power The service provider uses the data management system 7 to
And operation data of the intake air cooling device 6 and the storage device 9
And accumulates it as operation record data. Then, based on the operation record data accumulated in the output increase calculation processing unit 8a of the data processing device 8, the output increase amount of the gas turbine 2 due to the operation of the intake air cooling device 6 is calculated. calculate. Step 004 of the calculation of the usage fee and the compensation money The service provider uses the gas charge calculation unit 8b of the data management system 7 based on the data of the output increase calculated by the output increase calculation processing unit 8a. The usage fee corresponding to the amount of increase in the output of the turbine 2 and, if necessary, the compensation paid when the intake air cooling device 6 breaks down are calculated. Step 005 of usage fee billing and compensation payment notification The service provider generates, from the data processing device 8 of the data management system 7, the usage fee and compensation calculated by the usage fee calculation unit 8b of the data processing device 8. A transmission fee is sent to the business operator, and a notice of payment of a compensation when the intake air cooling device 6 breaks down is sent.
Step 006 of payment of usage fee and receipt of compensation money The power generation company pays the usage fee to the service company based on the request for the usage fee, and also receives the compensation money from the service company when the intake cooling device 6 breaks down. I do. Usage fee receipt,
Compensation Payment Step 007 The service provider receives the usage fee from the power generation company based on the usage fee request, and pays the power generation company a compensation fee in the event that the intake cooling device 6 breaks down.

Here, a method of calculating the amount of increase in the output of the gas turbine 2 as the power generation facility 1 by operation using the intake air cooling device 6 will be described with reference to FIGS.

The degree of the effect of increasing the output of the gas turbine 2 by the intake cooling device 6 depends on the atmospheric temperature and atmospheric humidity. This is because a mechanism of increasing the output is that a part of water droplets having a particle size of about 1 to 50 μm sprayed from the intake air cooling device 6 installed in the intake equipment 4 for guiding the intake air to the compressor 2a flows into the compressor 2a. The effect of evaporating water to cool the intake air, and of the sprayed water droplets,
a, which is compressed in the compressor 2a, rises in temperature, and the effect of cooling the outlet air temperature of the compressor 2a due to evaporation of the water droplets contributes to an increase in the output of the gas turbine 2. Are different. Since the effect of evaporating water droplets sprayed before the intake air is introduced into the gas turbine compressor 2a and cooling the intake air greatly contributes to the increase in the output of the gas turbine 2, in weather conditions with low humidity, The water sprayed from the intake air cooling device 6 during the intake of the compressor 2a evaporates before flowing into the gas turbine compressor 2a. As a result, a relatively large increase in gas turbine output is obtained. Will be done.

In order to calculate the amount of increase in the output of the gas turbine 2 based on the operation of the intake air cooling device 6, the control device 5 in the power generation facility 1 controls the power generation output of the gas turbine 2, the atmospheric temperature, the atmospheric humidity, and the atmospheric air. Pressure and intake cooling device 6
, The amount of water sprayed from is detected and transmitted as operation data to the data management system 7 via the communication line 10, and the data management system 7 stores such operation data in the storage device 9 and accumulates it. I do. Then, the output increase calculation processing unit 8a in the data processing device 8 of the data management system 7 performs the output increase calculation of the gas turbine 2 at a predetermined time as described above, and the usage fee corresponding to the output increase is calculated. Alternatively, a compensation for failure or the like is calculated, the gas turbine 2 is notified to the power generation company, and the cost is charged.

FIG. 3 is a flow chart showing a method for calculating the amount of increase in the output of the gas turbine based on weather conditions and the amount of water sprayed by the intake air cooling device 6. Step 0 shown in FIG.
02 to 003.

In FIG. 3, in step 011 operation data is obtained from the storage device. (1) In addition to the power generation output, data of weather conditions (2) atmospheric temperature, (3) atmospheric humidity, and the amount of water sprayed from the intake cooling device 6 (4) are read from the storage device 9 to read operating data. get.

In step 012, the output increase characteristic is calculated.

Based on the atmospheric temperature and atmospheric humidity data obtained from the storage device 9, the output increase characteristics of the gas turbine with respect to the amount of water spray under the atmospheric conditions are calculated. This output increase characteristic is calculated not only at standard humidity / standard temperature, but also at a plurality of cases at low humidity / high temperature and at high humidity / low temperature.

In step 013, the output increase amount is calculated.

The power increase amount of the gas turbine which increases based on the water spray amount data read from the storage device 9 is calculated and obtained from the power increase characteristic calculated in step 012.

FIG. 4 is a flowchart showing a processing method for calculating an increase in the output of the gas turbine based on the measured data of the output of the gas turbine 2 according to another embodiment different from FIG. Output increase can be calculated.

In step 211, operation data is obtained from the storage device.

The operation data before the intake cooling device 6 is operated in a state (T1) in which the gas turbine 2 as the power generation equipment 1 has entered the rated operation (1) power generation output, (2) atmospheric temperature, (3) The atmospheric pressure is obtained from the storage device 9.

In step 022, the standard state converted output before the water spraying apparatus is started is calculated.

A standard converted output W1 'when the gas turbine is operated before using the intake cooling device 6 is calculated. The power generation equipment 1 using the gas turbine 2 as a power source has a characteristic that the power generation output increases as the atmospheric temperature is lower and the atmospheric pressure is higher. The power generation output obtained from step 9 is corrected to values converted into atmospheric pressure and atmospheric temperature, which are standard atmospheric conditions. In this embodiment, the reference atmospheric conditions are an atmospheric temperature of 15 ° C. and an atmospheric pressure of 1013 hPa.

Standard converted output W1 '= actual side output W1.times.atmospheric pressure correction coefficient .alpha.1.times.atmospheric temperature correction coefficient .beta.1 In step 023, a standard state converted output during operation of the water spray apparatus is calculated.

The standard converted output W2 'when the gas turbine is operated using the intake air cooling device 6 (T2) is similarly calculated.

Standard converted output W2 '= actually measured output W2 × atmospheric pressure correction coefficient α2 × atmospheric temperature correction coefficient β2 In step 024, the amount of increase due to the operation of the water spray device is calculated.

The standard converted outputs W1 'and W2' are compared, and the difference (W2'-W1 ') is calculated as the output increase amount ΔW. These relationships are shown in the right part of FIG. During the water spray device driver T ₂ hours, shows that the output increases.

Output increase amount ΔW = standard converted output W2'-standard converted output W1 'FIG. 5 shows still another embodiment, and shows a processing method for calculating the output increase amount based on the planned output and the actually measured output data. It is a flowchart.

At step 031, operation data is obtained from the storage device. That is, data of (1) power generation output, (2) atmospheric temperature, and (3) atmospheric pressure, which are operation data, are acquired from the storage device 9.

In step 032, a plan output is calculated.

The planned output W1 is calculated in consideration of the atmospheric temperature. The planned output W1 is a calculated power output obtained when the gas turbine 2 is operated without using the intake cooling device 6, and is calculated based on design specifications.

In step 033, the output increase amount is calculated.

The difference (W2−W1) between the actually measured power generation output W2 of the gas turbine 2 and the planned output W1 is calculated, and this difference is set as the output increase ΔW.

FIG. 6 shows still another embodiment, in which the amount of increase in the output of the gas turbine by the intake air cooling device 6 is calculated based on the planned output and the actually measured output data. It is a flowchart which shows the modification of a processing method. The power generation output characteristics of the power generation equipment 1 as the gas turbine 2 deteriorate with time. Therefore, it is desirable to calculate the planned output in consideration of the aging degradation characteristics. This modification employs a method of calculating a planned output in consideration of the aging of the power generation equipment.

At step 041, operation data is obtained from the storage device. That is, data of (1) power generation output, (2) atmospheric temperature, and (3) atmospheric pressure, which are operation data, are acquired from the storage device 9.

In step 042, a plan output is calculated.

The planned output W1 is calculated in consideration of the atmospheric temperature. The planned output W1 is a calculated power output obtained when the gas turbine 2 is operated without using the intake cooling device 6, and is calculated based on design specifications.

In step 043, a planned output is calculated in consideration of the deterioration over time.

A corrected planned output W1 'is calculated by correcting the planned output W1 with the aging deterioration characteristic based on the operation time.

Corrected planned output W 1 ′ = planned output W 1 × output correction coefficient γ In step 044, the amount of output increase is calculated.

The difference (W2−W1 ′) between the actually measured power generation output W2 of the gas turbine 2 and the corrected planned output W1 ′ is calculated,
This difference is referred to as an output increase amount ΔW.

Output increase ΔW = actual output W2−planned output W1 ′ FIG. 7 shows a method of calculating the usage charge of the intake cooling device 6 which is charged to the power generation company by the service provider, and the power generation when the intake cooling device 6 breaks down. It shows the method of calculating the compensation paid to the business operator. In FIG. 7, the usage charge calculation unit 8b calculates a charge by multiplying the gas turbine output increase amount calculated as described above by a predetermined charge conversion coefficient and a commission contracted in advance, and then calculates the intake cooling system. The amount obtained by subtracting the price of the water for spraying used in step 6 shall be the amount charged. If the cooling operation cannot be performed due to the failure of the intake air cooling device 6 or the power generation facility 1 is stopped and the operation is suspended, the compensation amount is calculated by multiplying a predetermined commission contracted in advance during the suspension period.

[0048]

According to the present invention, the power generation company can reduce the cost of the intake cooling device from the initial investment of the gas turbine power generation equipment in order to increase the output by installing the intake cooling device. At the time of power generation operation of the turbine, efficient power generation output operation using the intake air cooling device can be performed. In addition, since it is sufficient to pay a usage fee corresponding to an increase in output due to an increase in power generation efficiency, economical operation of power generation equipment can be achieved.

[Brief description of the drawings]

FIG. 1 is a block diagram of a gas turbine power generation system including an intake air cooling device showing a concept of an embodiment of the present invention.

FIG. 2 is a flowchart showing a procedure for implementing the present invention shown in FIG.

3 is a flowchart illustrating a method of calculating an output increase amount based on weather conditions and a water spray amount, which is one embodiment executed by the data processing device of the present invention illustrated in FIG. 2;

FIG. 4 is a flowchart illustrating a processing method for calculating an output increase amount based on actual output data, which is another embodiment executed by the data processing apparatus according to the present invention illustrated in FIG. 2;

FIG. 5 is a flowchart illustrating a processing method for calculating an output increase amount based on a planned output and actual output data, which is another embodiment executed by the data processing apparatus according to the present invention illustrated in FIG. 2;

FIG. 6 is a flowchart showing a modification of the processing method for calculating the output increase amount based on the planned output and the actual output data, which is another embodiment executed by the data processing apparatus of the present invention shown in FIG. 2;

7 is a diagram showing a usage fee calculation method and a compensation money calculation method charged by the service provider shown in FIG. 2 to the power generation provider.

[Description of Signs] 1 ... power generation equipment, 2 ... gas turbine, 3 ... power generator, 4 ... intake equipment, 5 ... control device, 6 ... intake cooling device, 7 ... data management system, 8 ... data processing device, 8a ... Output increase amount calculation processing unit, 8b: usage charge calculation unit, 9: storage device, 1
0: communication line, 11: display device.

Claims (6)

[Claims] 1. A service company installs an intake cooling device that sprays water droplets into an intake facility that guides intake air to a compressor of a gas turbine power plant owned by a power generation company. In a gas turbine power plant that increases the output of the turbine, from operation data of the gas turbine and the intake air cooling device,
A gas equipped with an intake cooling device, wherein a usage fee corresponding to an increase in the output of the gas turbine due to the operation of the intake cooling device is calculated, and the calculated usage fee is charged to a power generation company as a billing fee. How to bill for turbine usage. 2. The method according to claim 1, wherein the amount of increase in the output of the gas turbine is calculated based on weather conditions and the operating state of the intake cooling device. . 3. The method according to claim 1, wherein the amount of increase in the output of the gas turbine is calculated based on actually measured output data. 4. The method according to claim 1, wherein the amount of increase in the output of the gas turbine is calculated based on a difference between a planned output and an actually measured output. 5. The usage fee of a gas turbine having an intake air cooling device according to claim 4, wherein the calculation of the amount of increase in the output of the gas turbine is performed in consideration of deterioration according to the operation time of the gas turbine. Billing method. 6. An intake cooling device for spraying water droplets in an intake facility for guiding intake air to a compressor of a gas turbine power plant owned by a power generation company, and operating the intake cooling device to reduce the output of the gas turbine. In the gas turbine power plant to be increased, a storage device that stores operation data of the gas turbine and the intake air cooling device, and a data processing device that calculates based on data of the storage device is provided, and the data processing device A gas equipped with an intake cooling device, wherein a usage fee corresponding to an increase in the output of a gas turbine by operating the intake cooling device is calculated, and the usage fee is provided to a power generation company as a billing fee. Turbine usage billing device.