WO2012042655A1 - ガスタービンシステム、ガスタービンシステムの制御装置及びガスタービンシステムの制御方法 - Google Patents
ガスタービンシステム、ガスタービンシステムの制御装置及びガスタービンシステムの制御方法 Download PDFInfo
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- WO2012042655A1 WO2012042655A1 PCT/JP2010/067182 JP2010067182W WO2012042655A1 WO 2012042655 A1 WO2012042655 A1 WO 2012042655A1 JP 2010067182 W JP2010067182 W JP 2010067182W WO 2012042655 A1 WO2012042655 A1 WO 2012042655A1
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- hot water
- pressure hot
- spray
- gas turbine
- compressor
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G6/00—Devices for producing mechanical power from solar energy
- F03G6/02—Devices for producing mechanical power from solar energy using a single state working fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K21/00—Steam engine plants not otherwise provided for
- F01K21/04—Steam engine plants not otherwise provided for using mixtures of steam and gas; Plants generating or heating steam by bringing water or steam into direct contact with hot gas
- F01K21/045—Introducing gas and steam separately into the motor, e.g. admission to a single rotor through separate nozzles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K21/00—Steam engine plants not otherwise provided for
- F01K21/04—Steam engine plants not otherwise provided for using mixtures of steam and gas; Plants generating or heating steam by bringing water or steam into direct contact with hot gas
- F01K21/047—Steam engine plants not otherwise provided for using mixtures of steam and gas; Plants generating or heating steam by bringing water or steam into direct contact with hot gas having at least one combustion gas turbine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
- F02C3/20—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products
- F02C3/30—Adding water, steam or other fluids for influencing combustion, e.g. to obtain cleaner exhaust gases
- F02C3/305—Increasing the power, speed, torque or efficiency of a gas turbine or the thrust of a turbojet engine by injecting or adding water, steam or other fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
- F02C6/18—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use using the waste heat of gas-turbine plants outside the plants themselves, e.g. gas-turbine power heat plants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/12—Cooling of plants
- F02C7/14—Cooling of plants of fluids in the plant, e.g. lubricant or fuel
- F02C7/141—Cooling of plants of fluids in the plant, e.g. lubricant or fuel of working fluid
- F02C7/143—Cooling of plants of fluids in the plant, e.g. lubricant or fuel of working fluid before or between the compressor stages
- F02C7/1435—Cooling of plants of fluids in the plant, e.g. lubricant or fuel of working fluid before or between the compressor stages by water injection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G6/00—Devices for producing mechanical power from solar energy
- F03G6/06—Devices for producing mechanical power from solar energy with solar energy concentrating means
- F03G6/064—Devices for producing mechanical power from solar energy with solar energy concentrating means having a gas turbine cycle, i.e. compressor and gas turbine combination
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S20/00—Solar heat collectors specially adapted for particular uses or environments
- F24S20/20—Solar heat collectors for receiving concentrated solar energy, e.g. receivers for solar power plants
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
Definitions
- the present invention relates to a gas turbine system using solar thermal energy for a gas turbine, a control device for the gas turbine system, and a control method for the gas turbine system.
- Patent Documents 2 and 3 there are techniques described in Patent Documents 2 and 3, for example.
- the technologies described in Patent Documents 2 and 3 are gas turbine systems of a HAT (Humid Air Turbine) cycle, which is a kind of regeneration cycle, and a rear end of a compressor outlet in the regeneration cycle in the cycle.
- HAT Human Air Turbine
- It includes a cooler, a humidifier that humidifies the compressed air at the outlet of the compressor, a heat exchanger that heats water supplied to the humidifier, and the like. And the technique of spraying the high pressure warm water produced
- the solar power generation system described above requires a heat collecting device for collecting solar heat, which is a heat source of steam.
- a heat collection method a trough type that collects heat by collecting sunlight on a heat collection tube installed in front of a curved mirror, or a tower type that collects sunlight reflected by a number of plane mirrors called heliostats on a tower.
- a large-scale heat collector reflecting mirror
- high-pressure hot water into the intake duct. That is, for example, by utilizing the fact that about 70 to 80% of the heat quantity of high-pressure hot water at 150 to 200 ° C. is vaporization latent heat, the hot water is boiled under reduced pressure from the high-pressure state to the atmospheric pressure state. In this case, the boiling of the high-pressure hot water under reduced pressure facilitates the formation of fine droplets and can quickly vaporize inside the compressor.
- fossil fuel is used to generate high-pressure hot water, carbon dioxide will increase.
- a compressor that compresses air
- a combustor that supplies air compressed by the compressor and burns fuel
- a gas turbine that is driven by the combustion gas generated in the combustor, and collects solar heat.
- a gas turbine system that includes a heat collecting device that generates high-pressure hot water and includes a spray device that sprays high-pressure hot water generated by the heat collecting device onto the air taken into the compressor is conceivable.
- Such a configuration provides a gas turbine system using solar thermal energy that significantly reduces the size of the heat collector, for example, the number of collector mirrors, and greatly reduces the site area required to install the heat collector. it can.
- An object of the present invention is to provide a gas turbine system and a gas turbine system that can respond to the demand for increased output even when high-pressure hot water generated using solar thermal energy cannot be used according to the operating state of the gas turbine system. It is an object to provide a control device and a control method of a gas turbine system.
- the invention according to claim 1 includes a compressor that compresses and discharges intake air, a combustor in which air and fuel discharged from the compressor are mixed and burned, and a combustor
- a gas turbine system including a gas turbine driven by combustion gas
- high-pressure hot water is generated by a heat collector using solar thermal energy, and the high-pressure hot water is sprayed from the spray nozzle into the air sucked into the compressor
- the invention according to claim 3 is a compressor that compresses and discharges the intake air, a combustor in which air and fuel discharged from the compressor are mixed and burned, and a combustor
- a gas turbine driven by combustion gas a high-pressure hot water spray system that generates high-pressure hot water by a heat collector using solar thermal energy, and sprays the high-pressure hot water from the spray nozzle into the air sucked into the compressor
- a control device for controlling the operation of the gas turbine system in a gas turbine system comprising: a normal temperature water spray system for spraying normal temperature water from a spray nozzle into the air sucked into the compressor;
- High pressure hot water production rate acquisition means for measuring the production rate of the high pressure hot water obtained by the heat collecting device, and at least a high pressure hot water spray using solar heat based on the current production rate of the high pressure hot water obtained by the high pressure hot water production rate acquisition means
- Spray control mode determining means for determining switching between a high-pressure hot water spray mode for spraying high-pressure hot
- the invention according to claim 7 includes a compressor that compresses and discharges intake air, a combustor in which air and fuel discharged from the compressor are mixed and burned, and a combustor A gas turbine driven by combustion gas, and a spray device installed in an intake chamber upstream of the compressor and spraying water onto the air supplied to the compressor to lower the temperature of the air supplied to the compressor And a solar-powered high-pressure hot water supply pipe including a heat collecting device that generates high-pressure hot water heated to a temperature higher than the temperature of air supplied to the compressor using solar heat.
- a control method in a gas turbine system comprising at least a normal temperature water supply pipe for supplying normal temperature water to a spraying device
- the gas turbine system includes a control device that controls the operation of the gas turbine system, and the control device acquires the high-pressure hot water generation rate acquisition unit that measures the generation rate of the high-pressure hot water generated by the heat collector and the high-pressure hot water generation rate acquisition unit.
- the high-pressure hot water spray mode that supplies high-pressure hot water from the solar-powered high-pressure hot water supply pipe to the spraying device based on the current high-pressure hot water production rate, and the normal temperature that supplies the normal-temperature water from the normal-temperature water supply system to the spraying device
- Spray control mode determining means for determining switching between water spray modes
- the spray control mode determining means generates high-pressure hot water that can be sprayed at a required spray rate in the intake air of the compressor based on the current high-pressure hot water generation rate acquired by the high-pressure hot water generation rate acquisition means by the heat collector.
- the high pressure hot water spray mode is determined.
- the room temperature water spray is determined. The mode is determined.
- the spray system enables switching to a room temperature water spray mode in which room temperature water is sprayed onto the intake air of the compression device.
- the gas turbine system can be controlled so as to be able to flexibly cope with the demand for increasing the turbine output.
- the invention according to claim 9 includes a compressor that compresses and discharges intake air, a combustor in which air and fuel discharged from the compressor are mixed and burned, and a combustor
- a gas turbine system driven by combustion gas installed in an intake chamber upstream of the compressor, spraying water on the air supplied to the compressor, and supplying the compressor Apparatus for lowering the temperature of the generated air, and a heat collecting apparatus for generating high-pressure hot water in which water supplied to the spraying apparatus is heated to a temperature higher than the temperature of air supplied to the compressor using solar heat
- a The spraying device has a plurality of spray mother pipes for spraying high-pressure hot water or normal temperature water from the spray nozzle into the intake chamber in the direction of intake air in the intake chamber, and is controlled by the control device so that the high pressure hot water or normal temperature water is supplied to the spray mother pipe.
- the control device controls the supply of high-pressure hot water and room-temperature water by controlling the flow rates of the solar-powered high-pressure hot water supply pipe, the storage high-pressure hot water supply pipe, and the room-temperature water supply pipe.
- the switching means is controlled in accordance with the supply amount, and switching setting of high-pressure hot water and normal temperature water to be supplied to the spray mother pipes at each stage of the spray mother pipe is performed.
- spraying is caused by the low generation rate of high-pressure hot water generated by the heat collector or the low amount of high-pressure hot water stored in the heat storage tank. Even if the high-pressure hot water sprayed from the device to the compressor intake is insufficient for the required high-pressure hot water spray rate, the high-pressure hot water is sprayed by the spray mother pipe and the spray different from the spray mother pipe for spraying the high-pressure hot water Normal temperature water can be sprayed from the mother tube. As a result, it is possible to provide a gas turbine system that can be operated to use as much as possible high-pressure hot water generated flexibly by solar heat. Moreover, it can reduce that the loss accompanying heat dissipation generate
- the invention according to claim 10 is the control device for the gas turbine system according to claim 9, wherein the high-pressure hot water production rate is obtained by measuring the production rate of the high-pressure hot water produced by the heat collecting device.
- Means high-pressure hot water storage amount acquisition means for acquiring the amount of high-pressure hot water stored in the heat storage tank, and how many stages of spray mother pipes to spray high-pressure hot water from among the plurality of stages of spray mother pipes, High-pressure hot water spraying stage number setting means, and supply amount setting means for setting each supply amount of high-pressure hot water and normal temperature water to the spraying device,
- the high-temperature water spray stage number setting means is based on at least the current high-pressure hot water generation rate acquired by the high-pressure hot water generation rate acquisition means and the high-pressure hot water storage amount acquired by the high-pressure hot water storage amount acquisition means.
- the number of stages of the spray mother pipe that can be sprayed over a preset time is calculated to determine the spray mother pipe for spraying the high-pressure hot water, and the supply amount setting means is in accordance with the calculated number of stages of the spray mother pipe.
- the supply amount of high-pressure hot water supplied to the spraying device and the supply amount of room-temperature water are set.
- the high-temperature water spray stage number setting means includes at least the current high-pressure hot water production rate acquired by the high-pressure hot water production rate acquisition means and the high-pressure hot water storage amount acquisition means. Based on the stored amount of high-pressure hot water, calculate the number of stages of the spray mother pipe that can spray high-pressure hot water over a preset time, determine the spray mother pipe to spray high-pressure hot water, and set the supply amount The means sets the supply amount of high-pressure hot water and the supply amount of normal temperature water supplied to the spraying device according to the calculated number of stages of the spray mother pipe.
- the invention according to claim 12 is the control method by the control device in the gas turbine system according to claim 10, wherein the control device further includes weather information acquisition means for acquiring the predicted weather information.
- the high-pressure hot water spray stage number setting means estimates the future high-pressure hot water generation rate from the weather information acquired by the weather information acquisition means and the current high-pressure hot water generation rate acquired by the high-pressure hot water generation rate acquisition means. Based on the calculated high-pressure hot water production rate and the high-pressure hot water storage amount acquired by the high-pressure hot water storage amount acquisition means, the number of stages of the spray mother pipe that can spray high-pressure hot water over a preset time is calculated.
- the high-pressure hot water spray stage number setting means is based on the estimated high-pressure hot water generation rate and the high-pressure hot water storage amount acquired by the high-pressure hot water storage amount acquisition means. Calculating the number of stages of the spray mother pipe that can spray the high-pressure hot water over a preset time to determine the spray mother pipe to spray the high-pressure hot water, and the supply amount setting means calculates the number of stages of the computed spray mother pipe. The supply amount of the high-pressure hot water supplied to the spraying device and the supply amount of room-temperature water are set according to the above.
- FIG. 1 is a configuration diagram of a gas turbine system according to a first embodiment of the present invention. It is a functional block block diagram of the control apparatus of the gas turbine system of 1st Embodiment.
- (A) is explanatory drawing of the data map which sets the spray rate of the high-pressure hot water with respect to the output target value MWD at the time of high-pressure hot water use
- (b) is the spray rate of normal-temperature water with respect to the output target value MWD at the time of normal-temperature water use. It is explanatory drawing of the data map to set.
- FIG. 6 is a flowchart continued from FIG. 5. It is explanatory drawing of the control logic of the flow regulating valve 24B, 29, 43.
- FIG. 1 is a configuration diagram of a gas turbine system according to a first embodiment of the present invention.
- the gas turbine system 500A of the present embodiment mainly includes a gas turbine device 100A, a heat collector 200 that collects solar heat to generate high-pressure hot water, and high-pressure hot water generated by the heat collector 200.
- a louver 6a is provided on the inlet side of the intake duct 6, for example, and a filter 6b for removing dust is disposed.
- the intake duct 6 is further provided with spray nozzles 32B for spraying normal temperature water onto the intake air 5 on the downstream side (compressor 1 side) of the filter 6b, for example, in a lattice shape, and normal temperature water is supplied to each spray nozzle 32B.
- the spray mother pipe 31B to be supplied and the spray nozzles 32A for spraying high-pressure hot water, which will be described later in the intake air 5, are arranged downstream of the spray nozzles 32B (on the compressor 1 side), for example, in a lattice shape.
- a spray mother pipe 31A for supplying high-pressure hot water is disposed in the spraying apparatus 300A.
- the intake duct 6 of FIG. 1 is shown in a partial cross-sectional view to display the spray mother pipe 31A, the spray nozzle 32A, the spray mother pipe 31B, and the spray nozzle 32B.
- a filter 6b or a silencer not shown
- Compressor 1, combustor 3, gas turbine 2 The intake air 5 under atmospheric conditions is sucked into the compressor 1 through the intake duct 6 and pressurized by the compressor 1, and then flows into the combustor 3 as compressed air 7.
- the fuel 8 supplied through the compressed air 7 and the flow rate adjusting valve 61 is mixed and burned, and a high-temperature combustion gas 9 is generated.
- the combustion gas 9 flows into the gas turbine 2 and rotationally drives the gas turbine 2.
- the generator 4 connected to the gas turbine 2 via a shaft is rotationally driven by the gas turbine 2 to generate power.
- the combustion gas 9 that has driven the gas turbine 2 is discharged from the gas turbine 2 as combustion exhaust gas 10.
- the compressor 1 is rotationally driven by a drive shaft 11 of the gas turbine 2.
- Thermal collector 200 and high-pressure hot water spray system using solar heat Next, the structure of the heat collecting apparatus 200 using solar thermal energy and a solar heat utilization high-pressure hot water spray system is demonstrated.
- the water in the water tank 20 storing normal temperature water is supplied to the pump 22A through the pipe 21A, pressurized by the pump 22A, and sent to the heat collecting pipe 27 in the order of the pipe 23A, the flow rate adjusting valve 24A, and the pipe 25A. Is done.
- the solar collector 27 is irradiated with sunlight of the sun S collected by the light collector 26.
- the water supplied into the heat collecting tube 27 is heated by the heat of sunlight condensed and irradiated by the light collecting plate 26 to become high-pressure hot water.
- the high-pressure hot water in the heat collecting pipe 27 is pumped in the order of the pipe 28, the flow rate adjusting valve 29, and the pipe 30A, and finally supplied to the spray mother pipe 31A.
- the light collecting plate 26 and the heat collecting tube 27 constitute the heat collecting device 200.
- a curved mirror is disposed as the light collecting plate 26 along the heat collecting tube 27.
- a configuration in which a disk-shaped heat collecting tube 27 is arranged at the parabolic focus is conceivable.
- the heat collecting apparatus 200 only one unit is representatively shown as the heat collecting apparatus 200, but normally, a plurality of units are installed so that the heat collecting pipes 27 are connected in series or in parallel, and are generated there.
- the high-pressure hot water is configured to join the pipe 28.
- a single unit is also possible.
- the pipe 28 branches to a pipe 45 with a flow rate adjusting valve 41 interposed on the way to the flow rate adjusting valve 29 and is connected to the heat storage tank 40.
- a flow rate adjusting valve 41 interposed on the way to the flow rate adjusting valve 29 and is connected to the heat storage tank 40.
- the pipe 46, the pump 42, the pipe 47, the flow rate adjusting valve 43, the spray mother pipe 31A, and the spray nozzle 32A constitute the “solar heat-use high-pressure hot water spray system” described in the claims.
- the pipe 21A, the pump 22A, the pipe 23A, the flow rate adjusting valve 24A, the pipe 25A, the heat collecting pipe 27, the pipe 28, the flow rate adjusting valve 29, and the pipe 30A constitute the “solar heat utilization high-pressure hot water supply pipe” described in the claims.
- the pump 42, the flow rate adjusting valve 43, and the pipes 46 and 47 constitute the “heat storage tank high-pressure hot water supply system” described in the claims.
- the pipe 45, the flow rate adjustment valve 41, the heat storage tank 40, the pipe 46, the pump 42, the pipe 47, and the flow rate adjustment valve 43 constitute a “stored high-pressure hot water supply pipe” described in the claims.
- the water in the water tank 20 is supplied to the pump 22B through the pipe 21B, pressurized by the pump 22B, and sent in the order of the pipe 23B, the flow rate adjusting valve 24B, and the pipe 30B to the spray mother pipe 31B. Finally supplied.
- the water tank 20, the pipes 21B and 23B, the pump 22B, the pipe 30B, the flow rate adjusting valve 24B, the spray mother pipe 31B, and the spray nozzle 32B constitute the “room temperature water spray system” described in the claims. .
- the water tank 20 is provided with a water level sensor 151, and the water level signal is transmitted to the control device 400A, and is a water supply valve that is opened and closed by a signal from the control device 400A so as to be maintained in an appropriate water level range. Normal temperature water is supplied through a certain on-off valve 19.
- the gas turbine system 500A is provided with various measurement sensors.
- the gas turbine system 500A measures the temperature, pressure, and flow rate of the fluid and the amount of power generated by the generator 4, and sends the measured signal to the control device 400A. , 22B, 42 are controlled, and the opening degree of the flow rate adjusting valves 19, 24A, 24B, 29, 43, 61 is adjusted.
- a typical measurement sensor is illustrated in FIG.
- a temperature sensor 141A for measuring the temperature of hot water heated by solar thermal energy and a pressure sensor 141B for measuring the pressure of hot water are provided on the outlet side connected to the pipe 28 of the typical heat collecting tube 27 of the heat collecting apparatus 200. ing.
- a light amount sensor 142 for measuring the amount of irradiation of the sun S is provided in the vicinity of the heat collecting apparatus 200, and the generation rate of the high-pressure hot water in the heat collecting apparatus 200 is calculated by a heat collecting amount calculating unit 427 described later on the control device 400A. It is possible.
- a flow rate sensor 144A and a pressure sensor 144B with a built-in temperature sensor are provided on the upstream side of the junction point of the piping 30A with the piping 47, and the flow rate sensor 144A generates a mass flow rate signal whose density is corrected by temperature from the measured volume flow rate.
- the pressure sensor 144B transmits the measured pressure signal to the control device 400A.
- the heat storage tank 40 is provided with a water level sensor 145A, a temperature sensor 145B, and a pressure sensor 145C, and a water level signal, a temperature signal, and a pressure signal from each are transmitted to the control device 400A.
- a flow rate sensor 147A and a pressure sensor 147B with a built-in temperature sensor are provided on the downstream side of the flow rate adjustment valve 43 of the pipe 47.
- the flow rate sensor 147A generates a mass flow rate signal whose density is corrected by temperature from the measured volume flow rate, or
- the pressure sensor 147B transmits the measured pressure signal to the control device 400A.
- a flow rate sensor 152A, a pressure sensor 152B, and a temperature sensor 152C with a built-in temperature sensor are provided in the pipe 30B on the downstream side of the flow rate adjustment valve 24B.
- the flow rate sensor 152A is a mass flow rate whose density is corrected by temperature from the measured volume flow rate.
- the pressure sensor 152B transmits the signal to the control device 400A, and the temperature sensor 152C transmits the measured temperature signal to the control device 400A.
- a temperature sensor 143A, an atmospheric pressure sensor 143B, and a humidity sensor 143C for measuring the temperature, pressure, and humidity of the intake air 5 under atmospheric conditions are provided on the inlet side of the intake duct 6, and each measurement signal is transmitted from the control device 400A. Is done.
- the temperature sensor 143A, the atmospheric pressure sensor 143B, and the humidity sensor 143C are provided outside the intake duct 6, but actually, in a place where the sunlight or rainwater does not hit the downstream side of the louver 6a. Of course, it is installed upstream of the spraying device 300A.
- the temperature sensor 143A has a high air temperature in summer and the like.
- the inlet temperature of the compressor 1 remains at atmospheric conditions, the air density is reduced and the intake air flow rate of the compressor 1 is reduced. Since the output that can be extracted to the outside decreases with the decrease in the output of the gas turbine 2 by the reduced amount, in order to complement the decrease in the output of the gas turbine 2 due to the increase in the atmospheric temperature, high-pressure hot water or room temperature water is supplied from the spray device 300A to the intake duct 6 By spraying inside, it is used for the control which reduces the air temperature of the inlet of the compressor 1 by the effect of latent heat of vaporization.
- an output sensor 171 for detecting the amount of power generation is provided, and the amount of power generation is transmitted to the control device.
- the gas turbine device 100A is provided with a pressure sensor 172A, a temperature sensor 172B, and a flow rate sensor 172C for measuring the pressure, temperature, and volume flow rate of the fuel 8 supplied to the combustor 3, respectively.
- a volume flow signal is transmitted to the controller 400A. These signals are used for opening degree feedback control of the flow rate adjusting valve 61 in the control logic for controlling the mass flow rate of the fuel supplied to the combustor 3 by the flow rate adjusting valve 61.
- the pump and the tank of the fuel supply system are omitted.
- the piping on the outlet side of the compressor 1 is provided with, for example, a temperature sensor 173A, a pressure sensor 173B, and a flow rate sensor 173C that measure the temperature, pressure, and flow rate of the compressed air pressurized by the compressor 1, respectively.
- a temperature sensor 174A and a pressure sensor 174B for measuring the temperature of the combustion exhaust gas and the back pressure of the gas turbine 2 are provided, and the temperature signal and the pressure signal are transmitted to the control device 400A. Yes.
- These signals are used, for example, for operation monitoring and efficiency monitoring of the gas turbine apparatus 100A.
- a measurement sensor is further installed in the gas turbine apparatus 100A and the operation of the gas turbine apparatus 100A is monitored.
- sensors for detecting the rotational speeds and on / off states of the pumps 22A, 22B, 42 are provided, and the flow rate adjusting valves 24A, 24B, 29, 41, 43, 61 are opened.
- a valve opening sensor for detecting the degree is also provided, and each signal is input to the control device 400A.
- FIG. 2 is a functional block configuration diagram of the control device of the gas turbine system of the first embodiment.
- the control device 400A includes a control device main body 400a and a console 400b.
- the control device 400A is, for example, a process computer, and the console 400b includes a display device and an input device.
- the display device is a liquid crystal display device, for example, and the input device is composed of, for example, a mouse and a keyboard.
- the control device main body 400a includes, for example, an input interface 401A, an input / output interface 401B, an output interface 401C, a CPU 402, an unillustrated ROM, RAM, hard disk storage device, and the like, and a program (not shown) stored in the hard disk storage device. And the data are read out and executed by the CPU 402, thereby realizing each functional configuration described later.
- the input interface 401A includes the various sensors 141A, 141B, 142, 143A, 143B, 143C, 144A, 144B, 145A, 145B, 145C, 147A, 147B, 151, 152A, 152B, 171, 172A, 172B, 172C, Measurement signals from 173A, 173B, 173C, 174A, and 174B (sensor symbols are omitted in FIG. 2) are input. Further, weather information (hereinafter also referred to as “weather forecast information”) from the weather information receiving apparatus 410, in particular, information on predicted atmospheric temperature change and predicted sunshine amount change is input to the input interface 401A.
- weather information hereinafter also referred to as “weather forecast information”
- weather forecast information information on predicted atmospheric temperature change and predicted sunshine amount change is input to the input interface 401A.
- the output target value MWD received by the power supply command receiving device 411 is input to the input interface 401A.
- the meteorological information receiving device 410 and the power feeding command receiving device 411 communicate with the transmission source by, for example, wireless communication or the Internet line.
- the input / output interface 401B receives an instruction from the input device of the console 400b and outputs a display output of the console 400b to the display device.
- the output interface 401C outputs an opening / closing control signal to the opening / closing valve 19 which is an on / off valve, outputs an opening degree control signal to the flow rate adjusting valves 24A, 29, 41, 43, 24B, 61, and the pump 22A, The start, stop, and rotation speed control signals to 22B and 42 are output.
- the functional configuration realized by the CPU 402 mainly includes a target output setting unit 420, a control mode switching unit (spray control mode determination unit) 421, and a heat collection amount calculation unit (high pressure hot water generation rate acquisition unit). 427, a plant monitoring unit 428, a high-pressure hot water use control unit 430A, a normal temperature water use control unit 440A, and a fuel injection control unit 450 are included.
- the target output setting unit 420 receives the output target value MWD received by the power supply command receiving device 411, and updates and sets the output target value MWD from time to time.
- the updated output target value MWD is input to the control mode switching unit 421.
- the target output setting unit 420 also has a function of changing the setting of the output target value MWD according to an input instruction from the console 400b.
- an increase command for the output target value MWD is received from the console 400b, the request command is received and a new output target value MWD is output to the control mode switching unit 421.
- the heat collection amount calculation unit 427 calculates the generation rate of high-pressure hot water in the heat collection device 200 based on the sensor signal from the light quantity sensor 142, and controls the control mode switching unit 421, the plant monitoring unit 428, and the high-pressure hot water use control unit 430A. To enter. Incidentally, it is assumed that the high-pressure hot water generated by solar energy in the heat collecting apparatus 200 is controlled, for example, so that the rotational speed of the pump 22A and the opening of the flow rate adjusting valve 24A are generated in the range of 150 to 200 ° C. It is considered that high-pressure hot water of 150 to 200 ° C. is supplied to the spray mother pipe 31A of the spray device 300A. Therefore, for simplification of control, the high-pressure hot water production rate GWH is converted into a high-pressure hot water production rate of 150 ° C. here.
- the control mode switching unit 421 includes a high pressure hot water supply available time estimation unit 423 and a control mode determination unit 425. A required signal among the sensor signals input to the input interface 401A is input to the control mode switching unit 421. The signals used specifically will be described in the description of the flowcharts of FIGS.
- the spray rate Q WHe (t) required for high-pressure hot water is estimated and calculated for changes in the atmospheric temperature T Aire (t) of the weather forecast information.
- the generation rate G WHe (t) is estimated, and it is checked whether the time during which the relationship represented by the following expression (1) is maintained exceeds the preset time TSH or the following expression (2) is satisfied To do. Then, the result is output to the control mode determination unit 425.
- G WHe (t) ⁇ Q WHe (t) (1)
- control mode determination unit 425 sprays the high-pressure hot water with the spray device 300A (control mode A (see FIG. 4). If not, normal temperature water is sprayed by the spray device 300A (control mode B (see FIG. 4)), and the control mode A is set to the high pressure hot water use control unit 430A and the normal temperature water use control unit 440A. Then, control in control mode B is executed. Details of the control mode A and the control mode B will be described later in the description of FIG.
- the high pressure hot water use control unit 430A controls the operation of the pumps 22A and 42 in accordance with sub modes A1, A2 and A3 described later as shown in FIG.
- the opening control of the flow rate adjusting valves 24A, 29, 41, 43 is performed, and the high-pressure hot water according to the signal of the atmospheric temperature T Air from the temperature sensor 143A (see FIG. 1) and the output target value MWD is mainly used.
- the spray rate QWH is controlled using the data map 430a.
- the high pressure hot water control unit 430 controls the operation of the pump 22A in the sub mode B1 described later as shown in FIG.
- the opening control of the regulating valves 24A and 41 is performed.
- a signal indicating whether or not to spray high-pressure hot water from the control mode determination unit 425 and a high-pressure hot water generation rate signal from the heat collection amount calculation unit 427 are input to the high-pressure hot water use control unit 430A.
- a sensor value is input via the input interface 401A.
- FIG. 3A is an explanatory diagram of a data map for setting the spray rate of high-pressure hot water relative to the output target value MWD when using high-pressure hot water.
- the horizontal axis indicates the target output value MWD (unit: MW), and the vertical axis indicates the high-pressure hot water spray rate Q WH (unit: kg / sec).
- the data map 430a in addition to the atmospheric temperature TAir as a parameter, for example, using atmospheric humidity, air pressure, high-pressure hot water temperature T WH. Atmospheric humidity in this parameter, the measurement signal is used from the humidity sensor 143C (see FIG. 1), the high-pressure hot water temperature T WH, supplied to the high-pressure hot water spray apparatus 300A (see FIG.
- the temperature measured by the temperature sensor 141A (see FIG. 1) is used, and when the high-pressure hot water from the heat storage tank 40 (see FIG. 1) is supplied to the spraying device 300A, the temperature sensor 145B (see FIG. 1). ) Is used.
- the spray rate QWH of the high-pressure hot water increases as the atmospheric temperature T Air increases.
- control mode B In the mode (control mode B) in which the normal temperature water is sprayed by the spray device 300A (control mode B), the normal temperature water use control unit 440A controls the operation of the pump 22B according to the sub mode B1 described later as shown in FIG. At the same time, the degree of opening of the flow rate adjusting valve 24B is controlled, and the control of the spray rate Q WC of room temperature water according to the signal of the atmospheric temperature T Air from the temperature sensor 143A and the output target value MWD is mainly performed using the data map 440a. Do it.
- the room temperature water use control unit 440 ⁇ / b> A has sensor values from the sensors 143 ⁇ / b> A, 143 ⁇ / b> B, 143 ⁇ / b> C, 152 ⁇ / b> A, 152 ⁇ / b> B, 152 ⁇ / b> C in addition to the output target value MWD from the target output setting unit 420. It is input via the input interface 401A.
- FIG. 3B is an explanatory diagram of a data map for setting the spray rate of normal-pressure hot water with respect to the output target value MWD when normal temperature water is used.
- the horizontal axis represents the output target value MWD (unit: MW), and the vertical axis represents the spray rate Q WC (unit: kg / sec) of room temperature water.
- This data map 440a uses, for example, atmospheric humidity, atmospheric pressure, and normal temperature water temperature TWC in addition to the atmospheric temperature T Air as parameters. Atmospheric humidity in this parameter, the measurement signal from the humidity sensor 143C is used as the cold water temperature T WC, temperature sensor 152C (see FIG. 1) is used. As can be seen from this data map 440a, the spray rate QWC of normal temperature water increases as the atmospheric temperature T Air increases.
- the fuel injection control unit 450 sets the target fuel injection rate based on the sensor signals from the temperature sensor 173A, the pressure sensor 173B, the flow rate sensor 173C, the output target value MWD, and the power generation output from the output sensor 171 to set the fuel.
- the injection rate Gf is feedback controlled.
- the control of the target fuel injection rate by the fuel injection control unit 450 is not limited to this control method, and may be a method of controlling based on the output target value MWD and sensor signals from other measurement sensors. good.
- the plant monitoring unit 428 reads necessary data of various sensor values, generates a monitoring screen indicating the operation state of the gas turbine system 500A, and displays it on the display device of the console 400b.
- FIG. 4 is an explanatory diagram of the operation of the flow control valve and the pump of the solar heat-based high-pressure hot water spray system and the normal-temperature water spray system in each of the control mode using high-pressure hot water and the control mode using normal-temperature water.
- the flow rate adjusting valves 24A, 29, 41, and 43 of the solar-heated high-pressure hot water spray system see FIG. 1
- the flow-rate adjusting valve 24B see FIG. 1 of the room-temperature water spray system
- the solar-heated high pressure The hot water spray pumps 22A and 42 (see FIG. 1) and the room temperature water spray pump 22B (see FIG. 1) are shown.
- the control mode A in which the high-pressure hot water is sprayed on the right side by the spray device 300A (see FIG. 1), the high-pressure hot water is not further accumulated in the heat storage tank 40 (see FIG. 1), and the heat collecting device 200 (FIG. 1).
- the sub-mode A3 column supplied to the spraying device 300A is shown, the operation states of opening and closing of the flow rate adjusting valves 24A, 24B, 29, 41, 43 in the respective sub-modes A1 to A3 are shown, and the pumps 22A, 22B, 42 are shown. The operation or stop state is shown.
- sub mode B1 in which high pressure hot water is further stored in the heat storage tank 40, and high pressure hot water is stored in the heat storage tank 40.
- the sub-mode B2 column that does not accumulate in the sub-mode B1, the open / close operation states of the flow rate adjusting valves 24A, 24B, 29, 41, 43 in each sub-mode B1, B2, and the operation of the pumps 22A, 22B, 42 or The stop state is shown.
- each flow rate adjustment valve 24A, 24B, 29, 41, 43 does not mean full open, and the opening degree is controlled in the open state by the control device 400A (see FIG. 1). This means that it is performed by the hot water use control unit 430A (see FIG. 2) or the room temperature water use control unit 440A (see FIG. 2).
- the sub mode A1 is generated by the heat collecting device 200, which is a required target value calculated by the high pressure hot water use control unit 430A (see FIG. 2) of the control device 400A that supplies high pressure hot water to the spray device 300A.
- This is a sub-mode of control in which the generation rate of high-pressure hot water at 150 to 200 ° C. is almost balanced and the high-pressure hot water generated by the heat collector 200 is supplied as it is to the spray mother pipe 31A (see FIG. 1) of the spray device 300A. .
- This control is performed by the high-pressure hot water use control unit 430A.
- the rotational speed control of the pump 22A, the opening degree of the flow rate adjustment valve 24A, and the opening degree of the flow rate adjustment valve 29 are the spray rate of the high-pressure hot water corresponding to the output target value MWD at that time, and The required pressure corresponding to the spray rate is controlled as indicated by the flow signal from the flow sensor 144A and the pressure signals from the pressure sensors 141B and 144B. Further, in this sub mode A1, the pumps 22B and 42 are stopped, and the flow rate adjusting valves 24B, 41 and 43 are fully closed.
- the high-pressure hot water generated by the heat collector 200 is supplied to the spray mother pipe 31A of the spray device 300A at the required spray rate, and the heat collector 200 In the control of adjusting the opening degree of the flow rate adjustment valve 41 so as to maintain the required spray rate indicated by the flow rate sensor 144A (see FIG. 1) and the pressure sensor 144B (see FIG. 1) of the high-pressure hot water of the margin. It is a sub mode. This control is performed by the high-pressure hot water use control unit 430A.
- the rotational speed control of the pump 22A and the opening degree of the flow rate adjusting valve 24A are based on the spray rate of the high-pressure hot water corresponding to the output target value MWD when the flow rate of the pipe 28 (refer to FIG. 1). Control is performed so that high-pressure hot water at a predetermined temperature (150 to 200 ° C.) is generated even when the temperature is high, and the opening degree of the flow rate adjusting valves 29 and 41 is a spray of high-pressure hot water corresponding to the output target value MWD at that time.
- the flow rate signal from the flow sensor 144A and the pressure signals from the pressure sensors 141B and 144B are controlled to indicate the rate and the required pressure corresponding to the spray rate.
- the sub mode A3 150 to 200 generated by the heat collector 200 with respect to the spray rate which is a required target value calculated by the high pressure hot water use control unit 430A of the control device 400A that should supply high pressure hot water to the spray device 300A. Since the generation rate of the high-pressure hot water at 0 ° C. is insufficient, all the high-pressure hot water generated by the heat collecting device 200 is supplied to the spray mother pipe 31A of the spraying device 300A, and the high-pressure hot water stored in the heat storage tank 40 is stored. The rotational speed of the pump 43 and the opening degree of the flow rate adjustment valve 43 are set so that hot water is added to the insufficient spray rate based on the measurement signals of the flow sensor 147A (see FIG. 1) and the pressure sensor 147B (see FIG. 1). Is a sub-mode for controlling. This control is performed by the high-pressure hot water use control unit 430A.
- submodes A1 and A3 hysteresis is set to the spray rate of the high-pressure hot water supplied to the spray mother pipe 31A of the spray device 300A, and the switching between the submodes A1 and A3 is frequently performed. Therefore, in sub mode A3, the flow rate adjusting valve 43 is opened as necessary, and the pump 42 is displayed as operating as necessary.
- the rotational speed control of the pump 22A and the opening amounts of the flow rate adjusting valves 24A and 29 are lower than the spray rate corresponding to the output target value MWD at that time, but at a predetermined temperature (150 to 200 ° C. ) Is generated at a required pressure corresponding to the spray rate of the high-pressure hot water corresponding to the output target value MWD, and the opening degree of the flow rate adjustment valve 29 corresponds to the output target value MWD at that time.
- the required pressure at the spray rate of the high-pressure hot water is controlled as indicated by pressure signals from the pressure sensors 141B and 144B.
- the rotational speed control of the pump 42 and the opening degree of the flow rate adjusting valve 43 indicate that the signal indicating the flow rate of the pipe 47 (see FIG. 1) from the flow rate sensor 147A is the spray rate of the high pressure hot water corresponding to the output target value MWD.
- the flow rate of the pipe 28 is insufficient, and the pressure indicated by the pressure sensor 147B matches the pressure indicated by the pressure sensor 144B, that is, the required pressure corresponding to the spray rate of the high-pressure hot water corresponding to the output target value MWD.
- the pump 22B is stopped and the flow rate adjustment valve 24B is fully closed.
- the high-pressure hot water generated by the heat collecting apparatus 200 is supplied through the pipe 30A (see FIG. 1), and the high-pressure hot water in the heat storage tank 40 is supplied from the pipe 47 (see FIG. 1) to the pipe 30A.
- the control method to add it is not limited to it. Since it is considered that the high-pressure hot water stored in the heat storage tank 40 decreases in temperature due to heat dissipation, the high-pressure hot water generated by the heat collector 200 is transferred to the one-end heat storage tank 40 via the entire amount of piping 45 (see FIG. 1).
- the spray is a required target value calculated by the high-pressure / hot water use control unit 430A of the control device 400A, which further supplies the high-pressure hot water to the spray device 300A by controlling the opening degree of the pump 42 and the flow rate adjusting valve 43 while accumulating.
- the rate may be supplied to the spray mother pipe 31A of the spray device 300A via the pipe 47 and the pipe 30A.
- the flow rate adjustment valve 29 is not in the “open” state illustrated in FIG. 4 but in the “closed” state.
- the spray rate which is a required target value calculated by the normal temperature water use controller 440A of the control device 400A that should supply normal temperature water to the spray device 300A
- the spray mother pipe 31B of the spray device 300A see FIG. 1
- a high-pressure hot water of 150 to 200 ° C. generated by the heat collecting apparatus 200 is all stored in the heat storage tank 40. That is, this is a case where the generation rate of the high-pressure hot water obtained by the heat collecting apparatus 200 is too low with respect to the spray rate, which is the required target value, and sufficient high-pressure hot water is not stored in the heat storage tank 40.
- the opening degree control of the pump 22B (see FIG. 1) and the flow rate adjustment valve 24B related to the spray control of the normal temperature water in this control is performed by the normal temperature water use control unit 440A. This is performed by the hot water use control unit 430A.
- the rotational speed control of the pump 22B and the opening degree of the flow rate adjusting valve 24B are the normal water spray rate corresponding to the output target value MWD at that time and the required pressure at the spray rate. Control is performed as indicated by the flow signal from the flow sensor 152A and the pressure signal from the pressure sensor 152B. Further, in this sub-mode B2, the rotational speed control of the pump 22A and the opening degrees of the flow rate adjusting valves 24A and 41 are controlled so that high-pressure hot water having a predetermined temperature (150 to 200 ° C.) is generated. Further, in the sub mode B2, the pump 42 is stopped and the flow rate adjusting valves 29 and 43 are fully closed.
- the spray rate which is a required target value calculated by the normal temperature water use controller 440A of the control device 400A that should supply normal temperature water to the spray device 300A, is set to the spray mother pipe 31B of the spray device 300A (see FIG. 1). It is applied to the case where high-pressure hot water cannot be generated by the heat collecting device 200 only when the heat collecting device 200 is supplied (when solar heat energy is insufficient due to cloudy weather or the like, or when the heat collecting device 200 cannot be operated for inspection).
- the opening degree control of the pump 22B see FIG.
- FIG. 5 to FIG. 6 are flowcharts showing a control flow in which a control mode using high-pressure hot water or a control mode using room temperature water is selected in the first embodiment, or those control modes are not selected.
- the processing of steps S01 to S13 in this flowchart is performed by the high pressure hot water supply available time estimation unit 423, the control of steps S14 and S19 is processed by the control mode determination unit 425, and the control of steps S15 to S18 and S24 is performed by the high pressure.
- Processing is performed by the hot water use control unit 430A, and the control in steps S20 to S24 is performed by the room temperature water use control unit 440A.
- step S ⁇ b> 01 the high pressure hot water supply available time estimation unit 423 receives the output target value MWD from the target output setting unit 420.
- step S02 it is checked whether or not the output target value MWD is greater than or equal to the threshold value GP th (“output target value ⁇ threshold value GP th ?”).
- the gas turbine apparatus 100A see FIG. 1
- the process proceeds to step S03, and if not (No), the process proceeds to step S05.
- step S03 it is checked whether or not the atmospheric temperature T Air indicated by the temperature sensor 143A (see FIG. 1) is equal to or higher than the threshold value T Airth (“atmospheric temperature T Air ⁇ threshold value T Airth ?”). If the atmospheric temperature T Air is equal to or higher than the threshold T Airth (Yes), the process proceeds to step S07, and if not (No), the process proceeds to step S04.
- step S04 it is checked whether or not the current output MWOut from the output sensor 171 (see FIG. 1) has decreased by a predetermined threshold value ⁇ or more with respect to the output target value MWD. If Yes in step S04, the process proceeds to step S07. If No, the process returns to step S01.
- step S05 it is checked whether an output increase request is received from the console 400b (see FIG. 2) in the signal from the target output setting unit 420. When there is an output increase request (Yes), the process proceeds to step S06, and when there is no output increase request (No), the process returns to step S01.
- step S06 the output target value MWD is set and updated, and the process proceeds to step S07.
- a future high-pressure hot water generation rate G WHe (t) is estimated and calculated over a predetermined time TSH based on weather information (weather forecast information) from the weather information receiver 410 (see FIG. 2). Specifically, in the high-pressure hot water generation rate GWH inputted from the current heat collection amount calculation unit 427, the current value of the forecast value of the sunshine amount in the weather forecast information is compared with the irradiation amount from the light amount sensor 142.
- the high pressure hot water generation rate G WHe (t) can be estimated and calculated.
- the high-pressure hot water generation rate G WHe (t) is calculated in terms of, for example, 150 ° C.
- the future atmospheric temperature T Aire (t) is estimated and calculated over a predetermined time TSH based on the weather information (weather forecast information) from the weather information receiving device 410. Specifically, the atmospheric temperature T Air input from the temperature sensor 143A that is currently measuring the atmospheric temperature is compared with the current value of the predicted atmospheric temperature value, and correction for the transition of the predicted atmospheric temperature value is performed.
- the future atmospheric temperature T Aire (t) can be estimated and calculated by calculating the coefficient and multiplying the transition of the forecast value (weather information) of the atmospheric temperature by the correction coefficient described above.
- step S09 a transition of the spray rate Q WHe (t) required for the future change in atmospheric temperature T Aire (t) estimated in step S08 is predicted and calculated over a predetermined time TSH.
- the spray rate Q WHe (t) of the high-pressure hot water is calculated by converting it to 150 ° C., for example.
- step S10 the high-pressure hot water production rate G WHe (t) estimated in step S07 is compared with the spray rate Q WHe (t) predicted in step S09, and G WHe (t) ⁇ Q WHe (t ) Satisfying time T1 is calculated.
- step S11 it is checked whether T1 is equal to or longer than a predetermined time TSH. If T1 is equal to or longer than the predetermined time TSH (Yes), the process proceeds to step S14. If not (No), the process proceeds to step S12.
- step S12 from the water level signal 145A, the temperature sensor 145B, and the pressure sensor 145C provided in the heat storage tank 40, the temperature signal and the pressure signal are converted into, for example, 150 ° C., and the heat storage tank 40 (FIG. stored in the first reference) to obtain the amount S 0 of the high-pressure hot water has.
- step S13 it is checked whether or not the above equation (1) is satisfied. If Yes in step S13, the process proceeds to step S14. If No, the process proceeds to step S19.
- step S14 the control mode determination unit 425 sets a mode in which high-pressure hot water is used. Then, the setting signal is input to the high-pressure hot water use control unit 430A and the normal temperature water use control unit 440A.
- the predetermined time TSH is a time set in advance by an operator (operator) from the console 400b (see FIG. 2). For example, in the summer, the power consumption of the air conditioner increases. Then, the length of the time zone in which the power demand increases is 3 hours or a value, and can be set as appropriate according to the season.
- step S15 the high-pressure hot water use control unit 430A starts a timer t.
- step S16 the high-pressure hot water use control unit 430A uses the data map 430a according to the atmospheric temperature T Air , the atmospheric pressure, the humidity, the output target value MWD, etc. measured by the temperature sensor 143A, the atmospheric pressure sensor 143B, and the humidity sensor 143C.
- the high-pressure hot water spray is controlled ⁇ "High-pressure hot water spray control according to the atmospheric temperature T Air etc. (Q WH control)" ⁇ . Specifically, this control is performed in any one of the submodes A1, A2 and A3 of FIG.
- step S17 the fuel injection control unit 450 controls the fuel injection amount G f.
- step S18 the high-pressure hot water use control unit 430A checks whether or not the timer t has passed the fixed time TSH. If the predetermined time TSH has elapsed (Yes), the process proceeds to step S24. If the predetermined time TSH has not elapsed (Yes), the process returns to step S16.
- step S19 the control mode determination part 425 will set to the mode which uses normal temperature water. Then, the setting signal is input to the high-pressure hot water use control unit 430A and the normal temperature water use control unit 440A.
- step S20 the high-pressure hot water use control unit 430A starts a timer t.
- step S21 the room temperature water use control unit 440A uses the data map 440a according to the atmospheric temperature T Air , the atmospheric pressure, the humidity, the output target value MWD, etc. measured by the temperature sensor 143A, the atmospheric pressure sensor 143B, and the humidity sensor 143C.
- the high-pressure hot water use control unit 430A generates the high-pressure hot water according to the situation and stores the high-temperature hot water in the heat storage tank 40, or performs the control not to generate the high-pressure hot water. Specifically, this control is controlled in the submode B1 or B2 in FIG.
- step S22 the fuel injection control unit 450 controls the fuel injection amount G f.
- step S23 the room temperature water use control unit 440A checks whether or not the timer t has passed the fixed time TSH. If the fixed time TSH has elapsed (Yes), the process proceeds to step S24. If the fixed time TSH has not elapsed (Yes), the process returns to step S21.
- step S24 the high pressure hot water use control unit 430A or the room temperature water use control unit 440A ends the control mode of the high pressure hot water spray or the room temperature water spray.
- the flow control valves 24B, 29, 43 that have been opened are closed, the pumps 22B, 42 that have been operated are stopped, and fluid is supplied to the spray mother pipe 31A or the spray mother pipe 31B. No longer.
- Step S12 in the flowchart corresponds to “a high-pressure hot water storage amount acquisition unit” described in the claims.
- FIG. 7 is an explanatory diagram of the control logic of the flow rate adjusting valves 24B, 29, 43 that are omitted in FIG.
- the target pressure value and the measured pressure value are input to the subtractor 601, the deviation is calculated, and the flow rate adjustment gain unit 602 multiplies the deviation calculated by the subtractor 601 by a predetermined gain value to calculate the flow rate increase / decrease value.
- the target flow rate value and the measured flow rate value are input to the subtracter 603, the deviation is calculated, and input to the adder 604.
- the adder 604 adds the flow rate increase / decrease value calculated by the flow rate adjustment gain unit 602 and the deviation calculated by the subtractor 603, and inputs the result to the PI control unit 605.
- the PI control unit 605 sets and outputs the valve opening. Thereby, the opening degree control of the flow rate adjusting valves 24B, 29, and 43 is easily performed.
- FIG. 8 is an explanatory diagram of a screen displayed on the display device of the console of the gas turbine system, (a) is an explanatory diagram of an example of a monitoring screen, and (b) is an explanatory diagram of an example of a solar heat utilization status display screen.
- the plant monitoring screen 801 displays a schematic system diagram of the gas turbine system 500A shown in FIG.
- the schematic system diagram is shown with the same reference numerals as those in FIG. 1, and the description overlapping with the description in FIG. 1 is omitted.
- the plant monitoring unit 428 includes a heat collection amount display field 830 indicating “heat collection amount”, a water level display column 831 of the water tank 20 labeled “water level”, and “high pressure hot water amount”. ”Is displayed, a high-pressure hot water amount display field 832 of the heat storage tank 40, an“ power generation ”display display field 833, and a high-pressure hot water supply available time display field 834 labeled“ High-pressure hot water maintenance possible time ”are prepared. Yes.
- the value displayed in the heat collection amount display field 830 displays the high-pressure hot water production rate (kg / sec) calculated by the heat collection amount calculation unit 427. For example, this value is displayed in terms of 150 ° C.
- the water level is indicated by the water level itself (unit: m) of the water tank 20 or the amount of water stored in the tank (unit: tons).
- the amount of high-pressure hot water is displayed, for example, as a storage amount (unit: tons) of high-pressure hot water converted to 150 ° C. high-pressure hot water.
- the power generation amount displays the output (unit: MWe) currently generated by the generator 4 detected by the output sensor 171 that detects the power generation amount.
- the high pressure hot water maintenance possible time displays the result calculated by the high pressure hot water supply possible time estimation unit 423 in the control shown in the flowcharts of FIGS.
- the temperature and pressure of the fluid in each of the pipes 30A, 30B, 47, the heat collecting pipe 27 (see FIG. 1), and the heat storage tank 40 are required for the plant monitoring screen 801. It can also be displayed accordingly.
- the horizontal axis is the time of the day
- the vertical axis is the high-pressure hot water spray rate (Kg / sec), the high-pressure hot water generation rate (kg / sec), and the high-pressure hot water storage amount (kg).
- the curve 841 shows the time transition of the high-pressure hot water production rate
- the curve 843 shows the time transition of the high-pressure hot water spray rate
- the curve 845 shows the time transition of the storage amount of the high-pressure hot water.
- these parameters are corrected to the volume and enthalpy results by the enthalpy and density of hot water at 150 ° C., and are unifiedly displayed in a high-pressure hot water state at 150 ° C.
- a function for calculating the cost merit and CO 2 reduction amount due to the use of solar heat is added to the control device 400A, and these calculation results are obtained. It is also possible to display on a display device. As described above, in the control device 400A according to the present embodiment, the plant operation state such as the time during which the high-pressure hot water can be supplied and the solar heat utilization state is displayed on the screen, thereby supporting the plant monitoring by the operator and reducing the monitoring effort. An effect is also obtained.
- high-pressure hot water that lowers the inlet temperature of the intake air of the compressor 1 is sprayed from the spray nozzle 32A (see FIG. 1) of the spray mother pipe 31A of the spray device 300A.
- the liquid droplets are completely vaporized, and no droplets having an adverse effect that causes erosion in the compressor 1 are generated.
- the output of the gas turbine system 500A can be improved without increasing the CO 2 that is a greenhouse gas, and the gas turbine system 500A that is preferable in terms of environmental conservation is provided. Can provide.
- variation of the production rate of high-pressure hot water with respect to the change in the amount of solar radiation in one day is provided. That is, on days or times when the amount of solar radiation is large, excess high-pressure hot water is stored in the heat storage tank 40, and the high-pressure hot water stored in the heat storage tank 40 is used on days or times when the amount of solar radiation is small. Can do.
- the normal temperature water of the water tank 20 is pumped, and from the spray nozzle 32B (refer FIG. 1) of the spray mother pipe 31B of the spray apparatus 300A. It can also be sprayed.
- the effect of increasing the output can be obtained by spraying room temperature water. For example, when the value of the output target value MWD of the generated power is high even at night and in the tropical night, the effect of increasing the output can be obtained by spraying room temperature water.
- the droplets are vaporized in the intake duct 6 to reduce the particle size. You can get time to be. Moreover, the possibility of the erosion of the compressor 1 can be reduced by configuring the shape of the spray holes of the spray nozzle 32B and the spray nozzle 32A such that the spray nozzle 32B has a smaller droplet diameter.
- the control mode determination unit 425 selects the control mode A for spraying high pressure hot water and the control mode B for spraying normal temperature water. . Since the piping system to be used is different between when high-pressure hot water is sprayed and when normal-temperature water is sprayed, if the two modes are frequently switched, a disturbance is generated, which is undesirable in the operation of the gas turbine system 500A. In this embodiment, switching between the control modes A and B can be suppressed for a certain time (TSH) by determining the control mode A or the control mode B by the control mode determination unit 425. Thereby, the occurrence frequency of disturbance to the gas turbine system 500A can be suppressed.
- TSH time
- the high-pressure hot water generation rate G WHe (t), the atmospheric temperature T Aire (t), and the high-pressure hot water spray are based on the weather forecast information.
- the rate Q WHe (t) is estimated and used, and the result is used, but the present invention is not limited to this.
- the values are It may be calculated by using the high-pressure hot water generation rate G WHe (t), the atmospheric temperature T Aire (t), and the high-pressure hot water spray rate Q WHe (t) as the TSH duration.
- the value of TSH is set to be shorter, for example, 1 hour, so that the change in the amount of sunlight can be followed.
- the heat storage tank 40 and the high pressure hot water stored in the heat storage tank 40 are supplied to the spray nozzle 32A of the spray mother pipe 31A that sprays the high pressure hot water stored in the heat storage tank 40 into the intake air 5 sucked into the compressor 1.
- the structure provided with a supply system it is not limited to it.
- the high pressure hot water supply available time estimation unit 423 of the control device 400A determines the generation rate of the high pressure hot water in the future heat collector 200 based on the current generation rate of the high pressure hot water in the heat collector 200 or the weather forecast information.
- the generation time of the high-pressure hot water by the heat collecting apparatus 200 is predicted and calculated to satisfy the required high-pressure hot water spray rate, and it is determined whether or not it exceeds the preset time TSH.
- the sub mode A1 for supplying the high-pressure hot water from the heat collector 200 to the spray mother pipe 31A of the spray device 300A see FIG. 4).
- control mode is output to the control mode determination unit 425 so as to control the sub mode B2 (see FIG. 4) for supplying room temperature water to the spray mother pipe 31B of the spray device 300A.
- the submodes in the control modes A and B in FIG. 4 are only A1 and B2.
- a gas turbine system 500B according to a second embodiment of the present invention will be described with reference to FIGS.
- the difference from the first embodiment is that the gas turbine device 100A is replaced with the gas turbine device 100B and the control device 400A is replaced with the control device 400B.
- the gas turbine device 100B is characterized in that it replaces the spray device 300B that sprays high-pressure hot water or room temperature water into the intake duct 6, and the other configuration is the same as that of the gas turbine device 100A.
- the same components as those in the first embodiment are denoted by the same reference numerals, and the description overlapping with that in the first embodiment is omitted.
- FIG. 9 is a configuration diagram of a spray mother pipe provided in an intake duct of a compressor in a gas turbine system according to a second embodiment of the present invention and a pipe for supplying high-pressure hot water or normal temperature water thereto.
- the spray mother pipe 31 is denoted by reference numerals 31_1, 31_2, 31_3, ... from the inlet side of the compressor 1 of the intake duct 6 toward the upstream side of the flow of intake air. .., provided in n stages as indicated by 31_n.
- the distance in the flow direction of the intake air between the stages is preferably equal.
- a plurality of spray nozzles 32_1, 32_2, 32_3,..., 32_n are arranged in a grid pattern in the spray mother pipes 31_1, 31_2, 31_3,.
- the plurality of spray nozzles 32_1, 32_2, 32_3,..., 32_n are desirably arranged so as to be shifted rather than arranged at the same position in a cross section perpendicular to the flow direction of the intake air. This is because when a droplet of room temperature water sprayed from the spray nozzle 32 of the upstream spray mother pipe 31 is applied to the downstream spray nozzle 32 and sucked into the compressor 1 as a large droplet, It is easy to cause.
- the pipe 30 ⁇ / b> A includes on / off valves (switching means) 71 ⁇ / b> _ ⁇ b> 1, 71 ⁇ / b> _ ⁇ b> 2, 71 ⁇ / b> _ ⁇ b> 3,.
- the pipe 30B are also connected to the spray mother pipes 31_1, 31_2, 31_3,..., 31_n as on / off valves (switching means) 73_1, 73_2, 73_3,. ., Connected through 73_n.
- An off detection sensor is provided and input to the control device 400B.
- FIG. 10 is a functional block configuration diagram of the control device for the gas turbine system according to the second embodiment.
- the same components as those of the control device 400A in the first embodiment are denoted by the same reference numerals, and redundant description is omitted.
- the generation rate of the high-pressure hot water in the heat collector 200 and the amount of high-pressure hot water stored in the heat storage tank 40 are sprayed with the required high-pressure hot water at a predetermined time TSH.
- the control device main body 400a includes, for example, an input interface 401A, an input / output interface 401B, an output interface 401C, a CPU 402, an unillustrated ROM, RAM, hard disk storage device, and the like, and a program (not shown) stored in the hard disk storage device. And the data are read out and executed by the CPU 402, thereby realizing each functional configuration described later.
- the input interface 401A receives measurement signals from the same various sensors as those in the first embodiment shown in FIG. 1. Further, the on-off valves 71_1, 71_2, 71_3,..., 71_n, 73_1 are used. , 73_2, 73_3,..., 73_n are input with signals from valve on / off detection sensors that detect on / off states.
- the output interface 401C outputs on / off valves 19 (see FIG. 1), 71_1, 71_2, 71_3,..., 71_n, 73_1, 73_2, 73_3,. Then, an opening degree control signal is output to the flow rate adjusting valves 24A, 29, 41, 43, 24B, 61 (see FIG. 1), and the pump 22A, 22B, 42 (see FIG. 1) is started, stopped, and rotated Output a control signal.
- the functional configuration of the CPU 402 mainly includes a target output setting unit 420, a high-pressure hot water supply available time estimation unit (high-pressure hot water spray stage number setting means) 424, and a high-pressure hot water use spray mother pipe number determination unit (high-pressure Hot water spray stage number setting means) 426, heat collection amount calculation unit (high pressure hot water production rate acquisition means) 427, plant monitoring unit 428, high pressure hot water use control unit (supply amount setting means) 430B, room temperature water use control unit (supply amount setting means) 440B and the fuel injection control unit 450.
- a target output setting unit 420 mainly includes a target output setting unit 420, a high-pressure hot water supply available time estimation unit (high-pressure hot water spray stage number setting means) 424, and a high-pressure hot water use spray mother pipe number determination unit (high-pressure Hot water spray stage number setting means) 426, heat collection amount calculation unit (high pressure hot water production rate acquisition means) 427, plant monitoring unit 428, high pressure hot water use control unit
- the heat collection amount calculation unit 427 calculates the generation rate of the high-pressure hot water in the heat collection apparatus 200 and inputs the high-pressure hot water supplyable time estimation unit 424, the plant monitoring unit 428, and the high-pressure hot water use control unit 430B. .
- High pressure hot water supply available time estimation unit 424 a high-pressure hot water generation rate G WHE in heat collector 200 that is predicted from the weather information (t), and high-pressure hot water quantity S t0 which is stored in the heat storage tank 40, is required
- the high-temperature hot water is temporarily sprayed based on the predicted value of high-pressure hot water sprayed mainly from the output target value MWD and the atmospheric temperature TAire (t) predicted from the weather information Q WHe (t).
- the supply possible time TSHX when high-pressure hot water is supplied and sprayed is calculated.
- the high-pressure hot water use spray mother pipe number determining unit 426 determines the required high-pressure hot water when the high-pressure hot water supply available time TSHX input from the high-pressure hot water supply available time estimation unit 424 does not reach the predetermined time TSH. Only a part of the spray rate is sprayed from the spray device 300B, and the number of stages p of the spray pipe 31 that can be maintained for a predetermined time TSH is set. Input to section 440B.
- the high-pressure hot water use control unit 430B has one stage according to the parameter p such as the atmospheric temperature T Air at that time, according to the number p of the spray mother pipe 31 sprayed with the high-pressure hot water input from the high-pressure hot water use spray mother pipe number determining unit 426. Control is performed to spray the high-pressure hot water using the number of spray mother pipes equal to or less than the maximum number of stages p according to the ability of the spray rate FA of the hit spray mother pipe 31.
- the spray rate FA is a value (unit: kg / sec) determined in advance by the shape of the spray hole of the spray nozzle 32 of the spray mother pipe 31 and the number of spray nozzles 32, and is boiled under reduced pressure when sprayed with high-pressure hot water. Is set in advance so that the droplets are vaporized or sufficiently small.
- the cold water used controller 440B includes, spray mother per stage to spray cold water corresponding to the amount that the high-pressure hot water usage control unit 430B is insufficient in a high-pressure hot water spray rate Q WH that was spray
- the spray rate FB is a value (unit: kg / sec) determined in advance by the shape of the spray hole of the spray nozzle 32 of the spray mother pipe 31 and the number of spray nozzles 32, and is a droplet when normal temperature water is sprayed. Is set in advance so as not to be too large, and as a value that does not freeze.
- the high-temperature hot water use control unit 430B performs the operation control in any one of the sub modes A1, A2, and A3 of the control mode B in FIG. Operation control is performed at B2.
- FIGS. 11 to FIG. 13 are flowcharts showing the flow of control in the control mode of using high-pressure hot water in the second embodiment.
- steps S01 to S05, steps S31 to S38, S57, and S58 in this flowchart are performed by the high pressure hot water supply available time estimation unit 424, and the control of steps S39 to S41 is performed using the high pressure hot water use spray mother pipe number setting unit 426.
- the control in steps S42 to S44, S46, S47 to S51 is processed by the high-pressure hot water use control unit 430B, and the control in steps S52 to S54 and S56 is processed by the room temperature water use control unit 440A.
- steps S01 to S05 are the same as those in the first embodiment, and a description thereof will be omitted.
- the “high pressure hot water supply available time estimation unit 423” rereads the “high pressure hot water supply available time estimation unit 424”, and if “Yes” in steps S03, S04, and S05, the process proceeds to step S31.
- step S31 the high pressure hot water supply available time estimation unit 424 starts a timer t.
- step S33 the high pressure hot water generation rate G WHe (t) until the timer t reaches TSH is estimated and calculated based on the weather information (weather forecast information) from the weather information receiving device 410 (see FIG. 10). Specifically, in the high-pressure hot water generation rate GWH input from the current heat collection amount calculation unit 427, the current value of the predicted amount of sunshine in the weather forecast information is compared with the irradiation amount from the light amount sensor 142.
- the high pressure hot water generation rate G WHe (t) can be estimated and calculated.
- the high-pressure hot water generation rate G WHe (t) is calculated in terms of, for example, 150 ° C.
- step S34 based on the weather forecast information (weather forecast information) from the weather information receiver 410, the atmospheric temperature T Aire (t) until the timer t reaches TSH is estimated and calculated. Specifically, the atmospheric temperature T Air input from the temperature sensor 143A that is currently measuring the atmospheric temperature is compared with the current value of the atmospheric temperature forecast value in the weather forecast information, and the atmospheric temperature It is possible to estimate and calculate the future atmospheric temperature T Aire (t) by calculating a correction coefficient for the predicted value transition and multiplying the transition of the predicted atmospheric temperature value (weather information) by the correction coefficient described above.
- step S35 a change in the spray rate Q WHe (t) of the high-pressure hot water required from the output target value MWD with respect to a change in the future atmospheric temperature T Aire (t) estimated in step S34 is calculated. Predictive calculation is performed until TSH is reached.
- step S35 the process proceeds to step S36 in FIG. 12 according to the connector (B).
- the spray rate Q WHe (t) of the high-pressure hot water is calculated by converting it to 150 ° C., for example.
- step S36 from the water level signal, temperature signal, and pressure signal from the water level sensor 145A (see FIG. 1), temperature sensor 145B (see FIG. 1), and pressure sensor 145C (see FIG. 1) provided in the heat storage tank 40, for example. , in terms of 0.99 ° C., now obtains the amount S t0 of the high-pressure hot water reserved in the heat storage tank 40 (see FIG. 1).
- step S37 it is checked whether or not the following equation (3) is satisfied. If Yes in step S37, the process proceeds to step S41. If No, the process proceeds to step S38. In step S38, the maximum TSHX that satisfies the following equation (4) is calculated.
- step S39 the high pressure hot water use spray mother pipe number determining unit 426 calculates the maximum integer p satisfying p ⁇ ⁇ (TSHX) / (TSH) ⁇ ⁇ n.
- n is the total number of stages n of the spray mother pipe 31 described above.
- step S40 the high-pressure hot water use spray mother pipe number determination unit 426 uses the high-pressure hot water for the p-stage spray mother pipe 31 counted from the compressor 1, and the remaining (np) -stage spray mother pipes. No. 31 is set so that room temperature water can be used.
- the high-pressure hot water use spray mother pipe number determination unit 426 inputs the number p of the spray mother pipe 31 to the high-pressure hot water use control unit 430B, and also uses the normal temperature water use control unit as the number of stages (np) of the spray mother pipe 31. Input to 440B. After step S40, the process proceeds to step S47 of FIG. 13 according to the connector (D).
- Step S41 the spray mother pipes 31 of all stages n are set to enable high-pressure hot water.
- the high pressure hot water use spray mother pipe number determination unit 426 inputs the number n of the spray mother pipe 31 to the high pressure hot water use control unit 430B and inputs the number 0 of the spray mother pipe 31 to the room temperature water use control unit 440B.
- step S41 the process proceeds to step S42 in FIG. 13 according to the connector (C).
- the high-pressure hot water use control unit 430B uses the data map 430a according to the atmospheric temperature T Air , the atmospheric pressure, the humidity, the output target value MWD, etc.
- step S44 the spray rate QWH is controlled. Specifically, this control is performed in any one of the submodes A1, A2 and A3 of FIG.
- step S45 the fuel injection control unit 450 controls the fuel injection amount G f.
- step S46 the control of the predetermined time ⁇ t and steps S44 and S45 is maintained. ⁇ t is, for example, about 10 to 30 minutes. After step S46, the process proceeds to step S57.
- step S48 the high-pressure hot water use control unit 430B uses the data map 430a according to the atmospheric temperature T Air , the atmospheric pressure, the humidity, the output target value MWD, etc. measured by the temperature sensor 143A, the atmospheric pressure sensor 143B, and the humidity sensor 143C.
- the high-pressure hot water spray rate Q WH is calculated (“the high-pressure hot water spray rate Q WC corresponding to the current atmospheric temperature T Air, etc.”).
- step S52 the room temperature water use control unit 440B calculates the spray rate Q WC of room temperature water by converting the spray rate of insufficient high-pressure hot water with respect to the current atmospheric temperature TAir or the like to room temperature water.
- the spraying rate Q WH of the high-pressure hot water is calculated in step S48, the a step S47, the difference spray rate of the spray rate was set at S50 Q WH (actually spray rate Q WH '), at room temperature water Convert and calculate the spray rate Q WC of room temperature water.
- the spray rate of normal temperature water is reduced by the difference from the enthalpy per kg of high-pressure hot water converted to 150 ° C.
- the spray rate Q WC of room temperature water corresponding to the difference in spray rate of the high-pressure hot water described above can be easily converted.
- step S54 the high-pressure hot water usage control unit 430B performs the control of the spray rate Q WH, cold water usage control unit 440B controls the spray rate Q WC (spray rate Q WH, control of Q WC).
- step S55 the fuel injection control unit 450 controls the fuel injection amount G f.
- step S56 the control of the constant time ⁇ t and steps S54 and S55 is maintained. After step S56, the process proceeds to step S57.
- t 0 is equal to or longer than the predetermined time TSH (Yes)
- the control of the spraying of high-pressure hot water or room temperature water is terminated. Otherwise (No), the process goes to step S33 of FIG. 11 according to the connector (E). Return and continue control of spraying high-pressure hot water or room temperature water.
- the high-pressure hot water is supplied to the compressor 1.
- room temperature water different from the spray mother pipe 31 spraying high-pressure hot water is sprayed from the spray mother pipe 31 upstream of the flow of intake air.
- the high-pressure hot water generated by solar heat can be controlled to be used as soon as possible more flexibly than in the case of the first embodiment, the high-pressure hot water is stored in the heat storage tank 40, and loss due to heat dissipation occurs. Can be reduced.
- the high pressure hot water supply available time estimation unit 424 and the high pressure hot water use spray mother pipe number determination unit 426 are configured to calculate the high pressure hot water generation rate G WHe (t) by the heat collector 200 and the high pressure hot water in the heat storage tank 40.
- a storage amount S t0 based on the transition of the high-pressure hot water spray rate Q WHe (t) required by the output target value MWD against future changes in the atmospheric temperature T Aire (t), predetermined high-pressure hot water
- the number of stages of the spray mother pipe 32 that can be sprayed over the calculated time ⁇ t is calculated to determine the spray mother pipe 32 that sprays the high-pressure hot water, and the high-pressure hot water use control unit 430B sprays the calculated high-pressure hot water.
- the supply amount of the high-pressure hot water supplied to the spray device 300B is set according to the number of stages of the tubes. Moreover, the normal temperature water use control part 440B sets the supply amount of normal temperature water, when the supply amount of the high-pressure hot water supplied to the spraying apparatus 300B is insufficient. As a result, the number of stages of the spray mother pipe 32 spraying the high-pressure hot water can be fixed for a preset time ⁇ t, so that the high-pressure hot water is used too quickly and only the spray mother pipe 32 spraying the room temperature water from the middle. Therefore, the possibility of erosion of the compressor 1 by spraying room temperature water from the spray mother pipe 32_1 near the inlet side of the compressor 1 can be reduced.
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Abstract
Description
なお、ガスタービンシステムでは、夏場等大気温度が上昇する条件では圧縮機における空気の吸気量が減少し、それにともなってガスタービンの出力も低下することが知られている。大気温度の上昇にともなうガスタービンシステムの出力低下を抑制する手段の一つとして、例えば、特許文献2,3に記載の技術がある。特許文献2,3に記載の技術は、具体的には、再生サイクルの一種であるHAT(Humid Air Turbine)サイクルのガスタービンシステムであり、当該サイクル内における再生サイクル内の圧縮機出口の後置冷却器、圧縮機出口の圧縮空気を加湿する加湿器、加湿器へ供給する水を加熱する熱交換器等を含んで構成されている。そして、後置冷却器や熱交換器等で生成された高圧温水を、圧縮機入口に設置した噴霧装置にて減圧沸騰を利用して噴霧する技術が記載されている。
圧縮機内部では、エロージョンを生じさせるような大きさの液滴を形成させず、速やかに噴霧水を気化させることが、吸気の温度低下、圧縮機の健全性の観点から望ましい。つまり、常温水を圧縮機の吸気内に噴霧する場合は、気化潜熱による吸熱作用で噴霧された常温水の液滴が氷点下となり、圧縮機の入口部で氷結し易い上に、噴霧後の液滴の粒径が小さくなりにくく、圧縮機内部での速やかな気化が望めない状態が生じ得る。
しかし、高圧温水の生成に化石燃料を用いると、二酸化炭素が増加することになる。
このような構成により、集熱装置の規模、例えば、集光鏡の数を大幅に低減し、集熱装置の設置に要する敷地面積を大幅に縮小化した太陽熱エネルギを利用したガスタービンシステムが提供できる。
集熱装置により得られる高圧温水の生成率を計測する高圧温水生成率取得手段と、少なくとも、高圧温水生成率取得手段により取得された現在の高圧温水の生成率に基づいて、太陽熱利用高圧温水噴霧系から高圧温水を噴霧する高圧温水噴霧モードと常温水噴霧系から常温水を噴霧する常温水噴霧モードとの切替決定する噴霧制御モード決定手段と、を有することを特徴とする。
ガスタービンシステムは、その運転を制御する制御装置を備え、制御装置は、集熱装置により生成される高圧温水の生成率を計測する高圧温水生成率取得手段と、高圧温水生成率取得手段により取得された現在の高圧温水の生成率に基づいて、太陽熱利用高圧温水供給配管からの高圧温水を噴霧装置に供給する高圧温水噴霧モードと、常温水供給系からの常温水を噴霧装置に供給する常温水噴霧モードとの切替決定する噴霧制御モード決定手段と、を有し、
噴霧制御モード決定手段は、高圧温水生成率取得手段により取得された現在の高圧温水の生成率に基づいて、圧縮機の吸気内に所要の噴霧率で噴霧可能な高圧温水を集熱装置で生成することが可能な時間を予測演算し、予測演算された時間が予め設定された閾値時間以上のときには、高圧温水噴霧モードとする決定をし、予め設定された閾値時間より短いときには、常温水噴霧モードとする決定をすることを特徴とする。
噴霧装置は、その噴霧ノズルから吸気室内に高圧温水又は常温水を噴霧する噴霧母管を吸気室内の吸気の方向に複数段有するとともに、制御装置により制御されて噴霧母管に高圧温水又は常温水切り替えて供給する切替手段を有し、
制御装置は、太陽熱利用高圧温水供給配管、貯留高圧温水供給配管及び常温水供給配管のそれぞれの流量を制御して高圧温水及び常温水の供給量を制御するとともに、高圧温水及び常温水のそれぞれの供給量に応じて切替手段を制御して、噴霧母管の各段の噴霧母管に供給する高圧温水及び常温水の切り替え設定を行うことを特徴とする。
高温水噴霧段数設定手段は、少なくとも、高圧温水生成率取得手段により取得された現在の高圧温水の生成率、及び高圧温水貯留量取得手段により取得された高圧温水の貯留量に基づいて、高圧温水を予め設定された時間にわたって噴霧可能な噴霧母管の段数を演算して、高圧温水を噴霧させる前記噴霧母管を決定し、供給量設定手段は、演算された噴霧母管の段数に応じて、噴霧装置に供給する高圧温水の供給量と常温水の供給量とを設定することを特徴とする。
高圧温水噴霧段数設定手段は、気象情報取得手段により取得された気象情報と、高圧温水生成率取得手段により取得された現在の高圧温水の生成率から今後の高圧温水生成率を推定演算し、推定演算された高圧温水生成率と、高圧温水貯留量取得手段により取得された高圧温水の貯留量とに基づいて、高圧温水を予め設定された時間にわたって噴霧可能な噴霧母管の段数を演算して、高圧温水を噴霧させる噴霧母管を決定し、供給量設定手段は、演算された噴霧母管の段数に応じて、噴霧装置に供給する高圧温水の供給量と常温水の供給量とを設定することを特徴とする。
図1から図8を参照し、本発明の第1の実施形態に係るガスタービンシステム500Aを説明する。図1は、本発明の第1の実施形態に係るガスタービンシステムの構成図である。
図1に示すように本実施形態のガスタービンシステム500Aは、主に、ガスタービン装置100A、太陽熱を集熱して高圧温水を生成する集熱装置200、集熱装置200で生成された高圧温水を吸気5に噴霧するとともに、必要に応じて常温水を吸気5に噴霧する噴霧装置300A、集熱装置200で生成された高圧温水を保温貯留する蓄熱槽40、制御装置400A、気象情報受信装置(気象情報取得手段)410、給電指令受信装置411を含んで構成される。
ガスタービン装置100Aにおいて、圧縮機1の上流側には、例えば、断面が矩形の吸気ダクト6が設けられている。吸気ダクト6の入口側には、例えば、ルーバー6aが設けられ、更に塵埃の除去のためのフィルタ6bが配置されている。吸気ダクト6には、更に、フィルタ6bの下流側(圧縮機1側)に、吸気5に常温水を噴霧する噴霧ノズル32Bを、例えば、格子状に配置し、各噴霧ノズル32Bに常温水を供給する噴霧母管31Bと、噴霧ノズル32Bよりも下流側(圧縮機1側)に、吸気5に後記する高圧温水を噴霧する噴霧ノズル32Aを、例えば、格子状に配置し、各噴霧ノズル32Aに高圧温水を供給する噴霧母管31Aを配置し、これらで噴霧装置300Aを構成している。
図1の吸気ダクト6は、噴霧母管31A、噴霧ノズル32A並びに噴霧母管31B、噴霧ノズル32Bを表示するため、部分断面図で示してある。
吸気ダクト6にフィルタ6bや図示しないサイレンサが設置されている場合は、噴霧装置300Aは、フィルタ6bやサイレンサよりも吸気5の流れの下流側に設置することが望ましい。
大気条件の吸気5が吸気ダクト6を通して圧縮機1に吸引され、圧縮機1で加圧された後、圧縮空気7となって燃焼器3へ流入する。燃焼器3で圧縮空気7と流量調整弁61を介して供給された燃料8が混合されて燃焼し、高温の燃焼ガス9が発生する。燃焼ガス9はガスタービン2へ流入し、ガスタービン2を回転駆動する。また、ガスタービン2と軸を介し接続された発電機4は、ガスタービン2により回転駆動され、発電する。ガスタービン2を駆動した燃焼ガス9は、燃焼排ガス10としてガスタービン2より排出される。また、圧縮機1は、ガスタービン2の駆動軸11により回転駆動される。
次に、太陽熱エネルギを利用した集熱装置200と太陽熱利用高圧温水噴霧系の構成について説明する。
常温水を貯留する水タンク20内の水は、配管21Aを経てポンプ22Aに給水され、ポンプ22Aにて昇圧され、配管23A及び流量調整弁24A、配管25Aの順に送水されて集熱管27に圧送される。集熱管27には集光板26によって集光された太陽Sの太陽光が照射される。その集光板26によって集光され照射された太陽光の熱によって集熱管27内に供給された水は加熱され、高圧温水となる。集熱管27内の高圧温水は配管28、流量調整弁29、配管30Aの順に圧送され、前記した噴霧母管31Aに最終的に供給される。
図1では、集熱装置200として代表的に1つのユニットだけを表示してあるが、普通は複数のユニットがシリーズ又はパラレルに集熱管27が配管接続されるように設置され、そこで生成された高圧温水が配管28に合流するように構成されている。ディッシュ式集熱装置やタワー式集熱装置の場合は1つのユニットでも可能である。
蓄熱槽40には、配管46を経由して蓄熱槽40から貯留された高圧温水を吸水するポンプ42が接続される。そして、そのポンプ42の吐出側に配管47が、流量調整弁43を介在させて接続され、配管30Aに蓄熱槽40に貯留された高圧温水を合流させる配管構成となっている。
配管21A、ポンプ22A、配管23A,流量調整弁24A、配管25A、集熱管27、配管28、流量調整弁29、配管30Aは、請求の範囲に記載の「太陽熱利用高圧温水供給配管」を構成している。
また、ポンプ42、流量調整弁43、配管46,47は、請求の範囲に記載の「蓄熱槽高圧温水供給系」を構成している。配管45、流量調整弁41、蓄熱槽40、配管46、ポンプ42、配管47、流量調整弁43は、請求の範囲に記載の「貯留高圧温水供給配管」を構成している。
また、水タンク20内の水は、配管21Bを経てポンプ22Bに給水され、ポンプ22Bにて昇圧され、配管23B、流量調整弁24B、配管30Bの順に送水されて、前記した噴霧母管31Bに最終的に供給される。
ここで、水タンク20、配管21B、23B、ポンプ22B、配管30B、流量調整弁24B、噴霧母管31B,噴霧ノズル32Bが、請求の範囲に記載の「常温水噴霧系」を構成している。
ガスタービンシステム500Aには様々な計測センサが備え付けられており、流体の温度、圧力、流量や、発電機4での発電量を計測し、制御装置400Aに計測した信号を送り、前記したポンプ22A,22B,42の駆動を制御したり、流量調整弁19,24A,24B,29,43,61の開度を調整したりしている。そのために、図1中には、代表的な計測センサを例示してある。
集熱装置200の代表的な集熱管27の配管28に接続する出口側には、太陽熱エネルギで加熱された温水の温度を計測する温度センサ141Aと温水の圧力を計測する圧力センサ141Bが設けられている。また、集熱装置200の近傍には、太陽Sの照射量を計測する光量センサ142が設けられ、集熱装置200における高圧温水の生成率を制御装置400Aの後記する集熱量演算部427で演算可能になっている。
蓄熱槽40には、水位センサ145A、温度センサ145B、圧力センサ145Cが設けられ、それぞれからの水位信号、温度信号及び圧力信号は制御装置400A送信される。
配管47の流量調整弁43の下流側には、温度センサ組み込みの流量センサ147Aと圧力センサ147Bが設けられ、流量センサ147Aは、計測した体積流量から温度による密度補正された質量流量信号を、又圧力センサ147Bは、計測した圧力信号を制御装置400A送信する。
図1では、温度センサ143A、気圧センサ143B、湿度センサ143Cは、吸気ダクト6の外側に設けられているが、実際には、ルーバー6aより下流側の太陽光や雨水の当たらない箇所に、また、当然、噴霧装置300Aよりも上流側に設置されている。
これらのセンサの内、特に、温度センサ143Aは、夏場などの気温が高い場合、圧縮機1の入口温度が大気条件のままであれば、空気密度が低下して圧縮機1の吸入空気流量が減少した分だけ、ガスタービン2出力の低下とともに外部に取り出せる出力が減少するので、大気温度の上昇によるガスタービン2の出力低下を補完するため、高圧温水又は常温水を噴霧装置300Aから吸気ダクト6内に噴霧することにより、蒸発潜熱の効果で圧縮機1の入口の空気温度を低下させる制御に用いられる。
また、ガスタービン装置100Aには、燃焼器3に供給される燃料8の圧力、温度、体積流量をそれぞれ計測する圧力センサ172A,温度センサ172B,流量センサ172Cが設けられ、圧力信号、温度信号、体積流量信号が制御装置400Aに送信される。これらの信号は、燃焼器3に供給される燃料の質量流量を流量調整弁61で制御する制御ロジックにおける流量調整弁61の開度フィードバック制御に用いられる。
ちなみに、図1では、燃料供給系のポンプやタンクは省略されている。
ガスタービン2の排気側には、例えば、燃焼排ガスの温度や、ガスタービン2の背圧を計測する温度センサ174A、圧力センサ174Bが設けられ、温度信号及び圧力信号を制御装置400Aに送信している。これらの信号は、例えば、ガスタービン装置100Aの動作監視や効率監視等に用いられる。実際には、ガスタービン装置100Aには、更に計測センサが設置されて、ガスタービン装置100Aの動作監視がされているが、本発明には関係ないので省略する。
次に、図2を参照しながら制御装置400Aの機能構成について説明する。図2は、第1の実施形態のガスタービンシステムの制御装置の機能ブロック構成図である。
制御装置400Aは、制御装置本体400aとコンソール400bとで構成されている。制御装置400Aは、例えば、プロセスコンピュータであり、コンソール400bは、表示装置と入力装置で構成されている。表示装置は例えば、液晶表示装置であり、入力装置は、例えば、マウスとキーボードで構成されている。
制御装置本体400aは、例えば、入力インタフェース401A、入出力インタフェース401B、出力インタフェース401C、CPU402、図示省略のROM、RAM、ハードディスク記憶装置等を有しており、ハードディスク記憶装置に記憶された図示しないプログラムやデータを読み出してCPU402で実行することにより、後記する各機能構成を実現する。
また、気象情報受信装置410からの気象情報(以下では、「天気予報情報」とも称する)、特に、予測大気温度変化、予測日照量変化の情報が入力インタフェース401Aに入力される。
更に、給電命令受信装置411が受信する出力目標値MWDが入力インタフェース401Aに入力される。
ちなみに、気象情報受信装置410、給電命令受信装置411は、例えば、無線通信又はインターネット回線で、発信元と通信する。
ちなみに、目標出力設定部420は、コンソール400bからの入力指示により出力目標値MWDの設定を変更する機能も有している。そして、コンソール400bからの出力目標値MWDの増加指令を受信したときは、その要求指令があったことと、新たな出力目標値MWDを制御モード切替部421に出力する。
ちなみに、集熱装置200において太陽エネルギにより生成する高圧温水は、例えば、150~200℃の範囲で生成するようにポンプ22Aの回転速度、流量調整弁24Aの開度を制御することを前提とし、噴霧装置300Aの噴霧母管31Aには、150~200℃の高圧温水を供給することを考えている。そこで、制御の簡単化のため、ここでは、150℃の高圧温水の生成率に換算したものを高圧温水生成率GWHとする。
高圧温水供給可能時間推定部423は、集熱量演算部427からの高圧温水生成率GWHと、気象情報受信装置410からの天気予報情報と、蓄熱槽40の水位S0に基づいて、高圧温水の供給可能時間を推定する。天気予報情報の特に大気温度TAire(t)の変化に対して、高圧温水の要求される噴霧率QWHe(t)を推定演算し、天気予報情報の特に日照量の変化に対して高圧温水生成率GWHe(t)を推定演算し、次式(1)で示す関係が維持される時間が、予め設定された時間TSHを超えるか、又は、次式(2)が満たされるかをチェックする。そしてその結果を、制御モード決定部425に出力する。
GWHe(t)≧QWHe(t) ・・・・・・・・・・・・・・・(1)
この制御モードA、制御モードBの詳細については、図4の説明の中で後記する。
また、高圧温水制御部430は、常温水を噴霧装置300Aで噴霧するモード(制御モードB)においては、図4に示すような後記するサブモードB1で、ポンプ22Aの運転制御をするとともに、流量調整弁24A,41の開度制御を行う。
高圧温水使用制御部430Aには、制御モード決定部425からの高圧温水を噴霧するか否かの信号と、集熱量演算部427からの高圧温水生成率の信号が入力される。また図2では省略してあるが、目標出力設定部420からの出力目標値MWD、センサ141A,141B,142,143A,143B,143C,144A,144B,145A,145B,145C,147A,147Bからのセンサ値が入力インタフェース401Aを介して入力される。
このデータマップ430aは、パラメータとして大気温度TAir以外に、例えば、大気湿度、気圧、高圧温水温度TWHを用いる。このパラメータにおける大気湿度は、湿度センサ143C(図1参照)からの計測信号が用いられ、高圧温水温度TWHとしては、集熱装置200からの高圧温水が噴霧装置300A(図1参照)に供給されるときは、温度センサ141A(図1参照)の計測温度が用いられ、蓄熱槽40(図1参照)からの高圧温水が噴霧装置300Aに供給されるときは、温度センサ145B(図1参照)が用いられる。
このデータマップ430aから分かるように、大気温度TAirが高いほど高圧温水の噴霧率QWHが増加する。
図3(b)は、常温水使用時の出力目標値MWDに対する常圧温水の噴霧率を設定するデータマップの説明図である。横軸が出力目標値MWD(単位:MW)を示し、縦軸が常温水の噴霧率QWC(単位:kg/sec)を示す。
このデータマップ440aは、パラメータとして大気温度TAir以外に、例えば、大気湿度、気圧、常温水温度TWCを用いる。このパラメータにおける大気湿度は、湿度センサ143Cからの計測信号が用いられ、常温水温度TWCとしては、温度センサ152C(図1参照)が用いられる。
このデータマップ440aから分かるように、大気温度TAirが高いほど常温水の噴霧率QWCが増加する。
なお、燃料噴射制御部450による目標燃料噴射率の制御は、この制御方法に限定されることなく、出力目標値MWDと他の計測センサからのセンサ信号とに基づいて制御する方法であっても良い。
次に、図4を参照しながら制御モード決定部425(図2参照)で決定された高圧温水を使用する制御モードA(高圧温水噴霧モード)の中のサブモードA1,A2,A3と、制御モード決定部425で決定された常温水を使用する制御モードB(常温水噴霧モード)の中のサブモードB1,B2について説明する。図4は、高圧温水使用の制御モード及び常温水使用の制御モードそれぞれの場合の、太陽熱利用高圧温水噴霧系及び常温水噴霧系の流量調整弁とポンプの動作説明図である。
また、このサブモードA1では、ポンプ22B,42は停止され、流量調整弁24B,41,43は全閉される。
また、このサブモードA2では、ポンプ22B,42は停止され、流量調整弁24B,43は全閉される。
ちなみに、図1における流量調整弁24A,24B,29,41,43は、本サブモードA2での動作状態を示している。
また、このサブモードA3では、ポンプ22Bは停止され、流量調整弁24Bは全閉される。
この制御における常温水の噴霧制御に係るポンプ22B(図1参照)と流量調整弁24Bの開度制御は、常温水使用制御部440Aが行うが、蓄熱槽40に高圧温水を溜める制御は、高圧温水使用制御部430Aにより行われる。
更に、このサブモードB2では、ポンプ42は停止され、流量調整弁29,43は全閉される。
このサブモードB2では、ポンプ22A,42は停止され、流量調整弁24A,29,41,43は全閉される。
出力目標値MWDが閾値GPth以上の場合(Yes)は、ステップS03へ進み、そうでない場合(No)は、ステップS05へ進む。
ステップS03では、温度センサ143A(図1参照)の示す大気温度TAirが閾値TAirth以上か否かをチェックする(「大気温度TAir≧閾値TAirth?」)。大気温度TAirが閾値TAirth以上の場合(Yes)は、ステップS07へ進み、そうでない場合(No)は、ステップS04へ進む。
ステップS08では、気象情報受信装置410からの気象情報(天気予報情報)に基づき、今後の大気温度TAire(t)を所定の時間TSHにわたって推定演算する。具体的には、現在大気温度を計測している温度センサ143Aから入力されている大気温度TAirと、大気温度の予報値の現在値とを比較して、大気温度の予報値の推移に対する補正係数を算出し、大気温度の予報値(気象情報)の推移に、前記した補正係数を乗じて、今後の大気温度TAire(t)を推定演算できる。
ステップS08の後、結合子(A)に従って、図6のステップS09へ進む。
ちなみに、ここでは、制御を簡単化するため高圧温水の噴霧率QWHe(t)は、例えば、150℃に換算して演算される。
ステップS12では、蓄熱槽40に設けられた水位センサ145A、温度センサ145B,圧力センサ145Cからの水位信号、温度信号、圧力信号から、例えば、150℃に換算して、現在、蓄熱槽40(図1参照)に貯留されている高圧温水の量S0を取得する。ステップS13では前記した式(1)が満たされるか否かをチェックする。ステップS13でYesの場合は、ステップS14へ進み、Noの場合は、ステップS19へ進む。
ここで、前記した所定の時間TSHは、予めコンソール400b(図2参照)から運転員(オペレータ)により入力されて設定された時間であり、例えば、夏場の場合は、空調機の消費電力が増加して電力需要が増加する時間帯の長さ、3時間とか値であり、季節に応じて適宜設定できるようになっている。
具体的にこの制御は前記した図4のサブモードA1,A2,A3のいずれかのサブモードで制御される。
ステップS17では、燃料噴射制御部450が、燃料噴射量Gfの制御を行う。そして、ステップS18では、高圧温水使用制御部430Aは、タイマtが一定時間TSHを経過したか否かをチェックする。一定時間TSHを経過した場合(Yes)は、ステップS24へ進み、一定時間TSHを経過していない場合(Yes)は、ステップS16へ戻る。
ステップS20では、高圧温水使用制御部430Aは、タイマtをスタートする。ステップS21では、常温水使用制御部440Aは、データマップ440aを用いて、温度センサ143A、気圧センサ143B、湿度センサ143Cが計測する大気温度TAir、気圧、湿度や出力目標値MWD等に応じた常温水の噴霧制御を行う{「大気温度TAir等に応じた常温水の噴霧制御(QWCの制御)」}。また、このとき高圧温水使用制御部430Aは、状況に応じ高圧温水を生成させて、蓄熱槽40に溜める制御、又は高圧温水を生成させない制御を行う。
具体的にこの制御は前記した図4のサブモードB1、B2のいずれかのサブモードで制御される。
本フローチャートが終了したタイミングで、開とされていた流量調整弁24B,29,43は閉とし、運転されていたポンプ22B,42は停止され、噴霧母管31A又は噴霧母管31Bに流体を供給しなくなる。
フローチャートのステップS12は、請求の範囲に記載の「高圧温水貯留量取得手段」に対応する。
次に、図8を参照しながら図2のプラント監視部428がコンソール400bの表示装置に表示するプラント監視画面801と太陽熱利用状況表示画面803について説明する。図8は、ガスタービンシステムのコンソールの表示装置に表示される画面の説明図であり、(a)は、監視画面例の説明図、(b)は太陽熱利用状況表示画面例の説明図である。
図8(a)に示すように、プラント監視画面801には、図1で示したガスタービンシステム500Aの概要系統図が表示される。概要系統図には、図1と同じ符号を付して示し、図1の説明と重複する説明を省略する。
なお、図8(a)に記載した項目以外にも、各配管30A,30B,47や集熱管27(図1参照)、蓄熱槽40における流体の温度や圧力等をプラント監視画面801に必要に応じて表示することもできる。
ここでは、1例として、これらのパラメータは、体積×エンタルピの結果を150℃の温水のエンタルピと密度で補正して、150℃の高圧温水状態で統一表示するようにしてある。
このように本実施形態における制御装置400Aでは、高圧温水を供給可能な時間や太陽熱の利用状況等のプラント運転状態を画面に表示することで、オペレータによるプラント監視を支援し、監視労力を低減する効果も得られる。
特に、中近東等の国等の砂塵が飛散しやすい環境にガスタービンシステム500Aが設置された場合、必要に応じて集熱装置200の掃除を必要とし、そのようなメンテナンスの時間にも、圧縮機1の吸気を冷却してガスタービンシステム500Aの出力低下を抑制できる。
ちなみに、このような蓄熱槽高圧温水供給系を有しない場合は、図4における制御モードA,Bにおけるサブモードは、A1,B2のみとなる。
次に、図9から図13を参照しながら本発明の第2の実施形態に係るガスタービンシステム500Bについて説明する。第1の実施形態と異なる点は、ガスタービン装置100Aがガスタービン装置100Bに代わる点と、制御装置400Aが制御装置400Bに代わる点である。
特に、ガスタービン装置100Bでは、吸気ダクト6内に高圧温水又は常温水を噴霧する噴霧装置300Bに代わる点が特徴であり、他は、ガスタービン装置100Aと同じ構成である。
第1の実施形態と同じ構成については同じ符号を付し、第1の実施形態と重複する説明は省略する。
これは、上流段の噴霧母管31の噴霧ノズル32から噴霧された常温水の液滴が下流段の噴霧ノズル32にかかって、大きな液滴となって圧縮機1に吸引されるとエロージョンの原因となりやすいからである。
図9では省略してあるが、開閉弁71_1,71_2,71_3,・・・,71_n,73_1,73_2,73_3,・・・,73_nには、それぞれの弁のオン、オフ状態を検出する弁オン・オフ検出センサが設けられ、制御装置400Bに入力されている。
次に、図10を参照しながら制御装置400Bの機能構成について説明する。図10は、第2の実施形態に係るガスタービンシステムの制御装置の機能ブロック構成図である。
第1の実施形態における制御装置400Aと同じ構成については同じ符号を付し、重複する説明を省略する。
本実施形態における制御装置400Bでは、集熱装置200での高圧温水の生成率や蓄熱槽40に貯留されている高圧温水量が、要求される高圧温水を噴霧して継続する所定の時間TSHに対して不足している場合は、一定量の高圧温水を噴霧装置300Bから吸気ダクト6内に噴霧させ、不足分は常温水を噴霧させる制御をする点が第1の実施形態における制御装置400Aと異なる点である。
制御装置本体400aは、例えば、入力インタフェース401A、入出力インタフェース401B、出力インタフェース401C、CPU402、図示省略のROM、RAM、ハードディスク記憶装置等を有しており、ハードディスク記憶装置に記憶された図示しないプログラムやデータを読み出してCPU402で実行することにより、後記する各機能構成を実現する。
そして、高圧温水使用噴霧母管数決定部426は、高圧温水供給可能時間推定部424から入力された高圧温水の供給可能時間TSHXが所定の時間TSHに達しない場合は、要求される高圧温水の噴霧率のうちの一部分だけの高圧温水を噴霧装置300Bから噴霧させて、所定の時間TSH持続させることが可能な噴霧母管31の段数pを設定し、高圧温水使用制御部430B、常温水使用部440Bに入力する。
ここで噴霧率FAは、噴霧母管31の噴霧ノズル32の噴霧孔の形状、噴霧ノズル32の数により予め定まる値(単位:kg/sec)であり、高圧温水の噴霧されたときに減圧沸騰により液滴が気化するか又は十分小さくなるように予め設定して定められている。
ここで噴霧率FBは、噴霧母管31の噴霧ノズル32の噴霧孔の形状、噴霧ノズル32の数により予め定まる値(単位:kg/sec)であり、常温水の噴霧されたときの液滴が大きすぎないように、又、氷結しない値として予め設定して定められている。
以下に、本実施形態における高圧温水供給可能時間推定部424、高圧温水使用噴霧母管数決定部426、集熱量演算部427、高圧温水使用制御部430B、常温水使用制御部440Bの詳細な機能を図11から図13のフローチャートを用いて説明する。図11から図13は、第2の実施形態における高圧温水使用の制御モードの制御の流れを示すフローチャートである。
ただし、「高圧温水供給可能時間推定部423」は、「高圧温水供給可能時間推定部424」に読み直し、ステップS03,S04,S05においてYesの場合は、ステップS31へ進む。
ちなみに、ここでは、制御を簡単化するため高圧温水生成率GWHe(t)は、例えば、150℃に換算して演算される。
ちなみに、ここでは、制御を簡単化するため高圧温水の噴霧率QWHe(t)は、例えば、150℃に換算して演算される。
ステップS36では、蓄熱槽40に設けられた水位センサ145A(図1参照)、温度センサ145B(図1参照)、圧力センサ145C(図1参照)からの水位信号、温度信号、圧力信号から、例えば、150℃に換算して、現在、蓄熱槽40(図1参照)に貯留されている高圧温水の量St0を取得する。
ステップS40では、高圧温水使用噴霧母管数決定部426が、圧縮機1側から数えてp段の噴霧母管31は、高圧温水を使用し、残りの(n-p)段の噴霧母管31は、常温水を使用可能に設定する。そして、高圧温水使用噴霧母管数決定部426は、噴霧母管31の段数pを高圧温水使用制御部430Bに入力するとともに、噴霧母管31の段数(n-p)を常温水使用制御部440Bに入力する。
ステップS40の後、結合子(D)に従って、図13のステップS47へ進む。
ステップS42では、高圧温水使用制御部430Bは、データマップ430aを用いて、温度センサ143A、気圧センサ143B、湿度センサ143Cが計測する大気温度TAir、気圧、湿度や、出力目標値MWD等に応じた高圧温水の噴霧率QWHを演算して設定する(「現在の大気温度TAir等に応じた高圧温水の噴霧率QWCを設定)」)。ステップS43では、噴霧母管31の1段当たりの噴霧率FAに基づき、噴霧母管段数pを設定し、QWH=FA・pに再設定する。
ステップS44では、噴霧率QWHの制御を行う。具体的にこの制御は前記した図4のサブモードA1,A2,A3のいずれかのサブモードで制御される。
ステップS45では、燃料噴射制御部450が、燃料噴射量Gfの制御を行う。ステップS46では、一定時間Δt、ステップS44,S45の制御が保持される。Δtは、例えば、10~30分程度の時間である。ステップS46の後、ステップS57へ進む。
t0が所定時間TSH以上になった場合(Yes)は、高圧温水又は常温水の噴霧の制御を終了し、そうでない場合(No)は、結合子(E)に従って、図11のステップS33に戻り、高圧温水又は常温水の噴霧の制御を続ける。
2 ガスタービン
3 燃焼器
4 発電機
6 吸気ダクト
21A 配管
21B 配管
22A ポンプ
22B ポンプ
23A 配管
23B 配管
24A 流量調整弁
24B 流量調整弁
25A 配管
26 集光板
27 集熱管
28 配管
29 流量調整弁
30A 配管
30B 配管
31(31_1,31_2,31_3,・・・31_n),31A,31B 噴霧母管
32(31_1,31_2,31_3,・・・31_n),32A,32B 噴霧ノズル
40 蓄熱槽
41 流量調整弁
42 ポンプ
43 流量調整弁
45 配管
46 配管
47 配管
71_1,71_2,71_3,・・・,71_n 開閉弁(切替手段)
73_1,73_2,73_3,・・・,73_n 開閉弁(切替手段)
100A,100B ガスタービン装置
141A 温度センサ
142 光量センサ
143A 温度センサ
200 集熱装置
300A,300B 噴霧装置
400A,400B 制御装置
400a 制御装置本体
410 気象情報受信装置
411 給電命令受信装置
420 目標出力設定部
421 制御モード切替部
423 高圧温水供給可能時間推定部
424 高圧温水供給可能時間推定部
425 制御モード決定部
426 高圧温水使用噴霧母管数決定部
427 集熱量演算部
428 プラント監視部
430 高圧温水制御部
430A 高圧温水使用制御部
430B 高圧温水使用制御部(供給量設定手段)
430a データマップ
440A 常温水使用制御部
440B 常温水使用制御部(供給量設定手段)
440a データマップ
500A,500B ガスタービンシステム
Claims (13)
- 吸気される空気を圧縮して吐出する圧縮機と、該圧縮機から吐出された空気と燃料とが混合されて燃焼される燃焼器と、該燃焼器からの燃焼ガスにより駆動されるガスタービンと、を備えたガスタービンシステムにおいて、
太陽熱エネルギを利用した集熱装置により高圧温水を生成し、前記圧縮機に吸気される前記空気中に前記高圧温水を噴霧ノズルから噴霧する太陽熱利用高圧温水噴霧系と、
前記圧縮機に吸気される前記空気中に常温水を噴霧ノズルから噴霧する常温水噴霧系と、を備えたことを特徴とするガスタービンシステム。 - 前記太陽熱利用高圧温水噴霧系は、
前記集熱装置で生成された高圧温水を保温して貯留する蓄熱槽と、
該蓄熱槽に貯留された前記高圧温水を前記圧縮機に吸気される前記空気中に噴霧する前記噴霧ノズルに供給する蓄熱槽高圧温水供給系を有することを特徴とする請求の範囲第1項に記載のガスタービンシステム。 - 吸気される空気を圧縮して吐出する圧縮機と、
該圧縮機から吐出された空気と燃料とが混合されて燃焼される燃焼器と、
該燃焼器からの燃焼ガスにより駆動されるガスタービンと、
太陽熱エネルギを利用した集熱装置により高圧温水を生成し、前記圧縮機に吸気される前記空気中に前記高圧温水を噴霧ノズルから噴霧する太陽熱利用高圧温水噴霧系と、
前記圧縮機に吸気される前記空気中に常温水を噴霧ノズルから噴霧する常温水噴霧系と、を備えるガスタービンシステムにおける該ガスタービンシステムの運転を制御する制御装置であって、
前記集熱装置により得られる高圧温水の生成率を計測する高圧温水生成率取得手段と、
少なくとも、前記高圧温水生成率取得手段により取得された現在の高圧温水の生成率に基づいて、前記太陽熱利用高圧温水噴霧系から高圧温水を噴霧する高圧温水噴霧モードと前記常温水噴霧系から常温水を噴霧する常温水噴霧モードとの切替決定する噴霧制御モード決定手段と、を有することを特徴とするガスタービンシステムにおける制御装置。 - 前記ガスタービンシステムの前記太陽熱利用高圧温水噴霧系は、
前記集熱装置で生成された高圧温水を保温して貯留する蓄熱槽と、
該蓄熱槽に貯留された前記高圧温水を前記圧縮機に吸気される前記空気中に噴霧する前記噴霧ノズルに供給する蓄熱槽高圧温水供給系と、を有し、
前記制御装置は、
前記蓄熱槽に貯留された高圧温水の貯留量を取得する高圧温水貯留量取得手段を有し、
前記噴霧制御モード決定手段は、
少なくとも、前記高圧温水生成率取得手段により取得された現在の高圧温水の生成率、及び前記高圧温水貯留量取得手段により取得された高圧温水の貯留量に基づいて、前記高圧温水噴霧モードと前記常温水噴霧モードとの切替決定することを特徴とする請求の範囲第3項に記載のガスタービンシステムにおける制御装置。 - 前記ガスタービンシステムの前記太陽熱利用高圧温水噴霧系は、
前記集熱装置で生成された高圧温水を保温して貯留する蓄熱槽と、
該蓄熱槽に貯留された前記高圧温水を前記圧縮機に吸気される前記空気中に噴霧する前記噴霧ノズルに供給する蓄熱槽高圧温水供給系と、を有し、
前記制御装置は、
前記蓄熱槽に貯留された高圧温水の貯留量を取得する高圧温水貯留量取得手段と、
更に、予報された気象情報を取得する気象情報取得手段と、を有し、
前記噴霧制御モード決定手段は、
少なくとも、前記気象報情報手段により取得された気象情報、前記高圧温水生成率取得手段により取得された現在の高圧温水の生成率及び予測される高圧温水の生成率、並びに前記高圧温水貯留量取得手段により取得された高圧温水の貯留量に基づいて、前記圧縮機の吸気内に所要の噴霧率で噴霧可能な時間を予測演算し、
該予測演算された時間が予め設定された閾値時間以上のときには、前記高圧温水噴霧モードとする決定をし、前記予測演算された時間が前記予め設定された閾値時間より短いときには、前記常温水噴霧モードとする決定することを特徴とする請求の範囲第3項に記載のガスタービンシステムにおける制御装置。 - 前記ガスタービンシステムの前記太陽熱利用高圧温水噴霧系は、
前記集熱装置で生成された高圧温水を保温して貯留する蓄熱槽と、
該蓄熱槽に貯留された前記高圧温水を前記圧縮機に吸気される前記空気中に噴霧する前記噴霧ノズルに供給する蓄熱槽高圧温水供給系と、を有し、
前記制御装置は、
前記蓄熱槽に貯留された高圧温水の貯留量を取得する高圧温水貯留量取得手段を有し、
前記噴霧制御モード決定手段は、
少なくとも、前記高圧温水生成率取得手段により取得された現在の高圧温水の生成率、及び前記高圧温水貯留量取得手段により取得された高圧温水の貯留量に基づいて、前記圧縮機の吸気内に所要の噴霧率で噴霧可能な時間を予測演算し、
該予測演算された時間が予め設定された閾値時間以上のときには、前記高圧温水噴霧モードとする決定をし、前記予測演算された時間が前記予め設定された閾値時間より短いときには、前記常温水噴霧モードとする決定するとともに、
前記圧縮機内に所要の噴霧率で噴霧可能な時間を予測演算した結果を、表示装置に表示することを特徴とする請求の範囲第3項に記載のガスタービンシステムにおける制御装置。 - 吸気される空気を圧縮して吐出する圧縮機と、該圧縮機から吐出された空気と燃料とが混合されて燃焼される燃焼器と、該燃焼器からの燃焼ガスにより駆動されるガスタービンと、
前記圧縮機の上流側の吸気室内に設置され、前記圧縮機に供給される空気に水を噴霧して、前記圧縮機に供給される空気の温度を低下させる噴霧装置と、
前記噴霧装置に供給される水を、太陽熱を利用して前記圧縮機に供給される空気の温度よりも高温に加熱された高圧温水を生成する集熱装置を含む太陽熱利用高圧温水供給配管と、
常温水を前記噴霧装置に供給する常温水供給配管と、を少なくとも備えるガスタービンシステムにおける制御方法であって、
前記ガスタービンシステムは、その運転を制御する制御装置を備え、
該制御装置は、
前記集熱装置により生成される高圧温水の生成率を計測する高圧温水生成率取得手段と、
前記高圧温水生成率取得手段により取得された現在の高圧温水の生成率に基づいて、前記太陽熱利用高圧温水供給配管からの高圧温水を前記噴霧装置に供給する高圧温水噴霧モードと、前記常温水供給系からの常温水を前記噴霧装置に供給する常温水噴霧モードとの切替決定する噴霧制御モード決定手段と、を有し、
前記噴霧制御モード決定手段は、
前記高圧温水生成率取得手段により取得された現在の高圧温水の生成率に基づいて、前記圧縮機の吸気内に所要の噴霧率で噴霧可能な高圧温水を前記集熱装置で生成することが可能な時間を予測演算し、
該予測演算された前記時間が予め設定された閾値時間以上のときには、前記高圧温水噴霧モードとする決定をし、前記予め設定された閾値時間より短いときには、前記常温水噴霧モードとする決定をすることを特徴とするガスタービンシステムにおける制御方法。 - 前記ガスタービンシステムは、
前記集熱装置で生成された高圧温水を保温して貯留する蓄熱槽と、及び該蓄熱槽に貯留された高圧温水を前記噴霧装置に供給する貯留高圧温水供給配管と、を更に備え、
前記制御装置は、
前記蓄熱槽に貯留された高圧温水の貯留量を取得する高圧温水貯留量取得手段を有し、
前記噴霧制御モード決定手段は、
前記高圧温水生成率取得手段により取得された現在の高圧温水の生成率及び前記高圧温水貯留量取得手段により取得された高圧温水の貯留量に基づいて、前記圧縮機の吸気内に所要の噴霧率で噴霧可能な時間を予測演算し、
該予測演算された前記時間が予め設定された閾値時間以上のときには、前記高圧温水噴霧モードとする決定をし、前記予め設定された閾値時間より短いときには、前記常温水噴霧モードと決定することを特徴とする請求の範囲第7項に記載のガスタービンシステムの制御装置における制御方法。 - 吸気される空気を圧縮して吐出する圧縮機と、該圧縮機から吐出された空気と燃料とが混合されて燃焼される燃焼器と、該燃焼器からの燃焼ガスにより駆動されるガスタービンと、を備えたガスタービンシステムであって、
前記圧縮機の上流側の吸気室内に設置され、前記圧縮機に供給される空気に水を噴霧して、前記圧縮機に供給される空気の温度を低下させる噴霧装置と、
前記噴霧装置に供給される水を、太陽熱を利用して前記圧縮機に供給される空気の温度よりも高温に加熱された高圧温水を生成する集熱装置を含む太陽熱利用高圧温水供給配管と、
前記集熱装置で生成された高圧温水を保温して貯留する蓄熱槽、及び該蓄熱槽に貯留された高圧温水を前記噴霧装置に供給する貯留高圧温水供給配管と、
必要に応じて常温水を前記噴霧装置に供給する常温水供給配管と、
前記ガスタービンシステムの運転を制御する制御装置と、を備え、
前記噴霧装置は、
その噴霧ノズルから前記吸気室内に前記高圧温水又は常温水を噴霧する噴霧母管を前記吸気室内の吸気の方向に複数段有するとともに、
前記制御装置により制御されて前記噴霧母管に前記高圧温水又は常温水切り替えて供給する切替手段を有し、
前記制御装置は、前記太陽熱利用高圧温水供給配管、前記貯留高圧温水供給配管及び前記常温水供給配管のそれぞれの流量を制御して前記高圧温水及び常温水の供給量を制御するとともに、前記高圧温水及び常温水のそれぞれの供給量に応じて前記切替手段を制御して、前記噴霧母管の各段の噴霧母管に供給する前記高圧温水及び常温水の切り替え設定を行うことを特徴とするガスタービンシステム。 - 請求の範囲第9項に記載のガスタービンシステムにおける制御装置であって、
前記集熱装置により生成される高圧温水の生成率を計測する高圧温水生成率取得手段と、
前記蓄熱槽に貯留された高圧温水の貯留量を取得する高圧温水貯留量取得手段と、
前記複数段の噴霧母管のうち何段の噴霧母管から前記高圧温水を噴霧させるかを設定する、高圧温水噴霧段数設定手段と、
前記噴霧装置への前記高圧温水及び前記常温水のそれぞれの供給量を設定する供給量設定手段と、を有し、
少なくとも、前記高温水噴霧段数設定手段は、前記高圧温水生成率取得手段により取得された現在の高圧温水の生成率、及び前記高圧温水貯留量取得手段により取得された高圧温水の貯留量に基づいて、前記高圧温水を予め設定された時間にわたって噴霧可能な前記噴霧母管の段数を演算して、前記高圧温水を噴霧させる前記噴霧母管を決定し、
前記供給量設定手段は、前記演算された噴霧母管の段数に応じて、前記噴霧装置に供給する前記高圧温水の供給量と前記常温水の供給量とを設定することを特徴とするガスタービンシステムにおける制御装置。 - 前記高前記温水噴霧段数設定手段は、前記圧縮機に最も近い前記噴霧母管側から、前記演算された噴霧母管の段数に応じて前記高圧温水を噴霧させる前記噴霧母管を決定することを特徴とする請求の範囲第10項に記載のガスタービンシステムにおける制御装置。
- 請求の範囲第10項に記載のガスタービンシステムにおける制御装置による制御方法において、
前記制御装置は、更に、予報された気象情報を取得する気象情報取得手段を有し、
前記高圧温水噴霧段数設定手段は、
前記気象情報取得手段により取得された前記気象情報と、前記高圧温水生成率取得手段により取得された現在の高圧温水の生成率から今後の高圧温水生成率を推定演算し、推定演算された高圧温水生成率と、前記高圧温水貯留量取得手段により取得された高圧温水の貯留量とに基づいて、前記高圧温水を予め設定された時間にわたって噴霧可能な前記噴霧母管の段数を演算して、前記高圧温水を噴霧させる前記噴霧母管を決定し、
前記供給量設定手段は、前記演算された噴霧母管の段数に応じて、前記噴霧装置に供給する前記高圧温水の供給量と前記常温水の供給量とを設定することを特徴とするガスタービンシステムにおける制御方法。 - 前記高前記温水噴霧段数設定手段は、前記圧縮機に最も近い前記噴霧母管側から、前記演算された噴霧母管の段数に応じて前記高圧温水を噴霧させる前記噴霧母管を決定することを特徴とする請求の範囲第12項に記載のガスタービンシステムにおける制御方法。
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US20130174549A1 (en) | 2013-07-11 |
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