JP6031011B2 - Power generation system - Google Patents

Description

  The present invention relates to a power generation system, and more particularly to a power generation system that generates power by combining an internal combustion engine power generation device using an internal combustion engine and a natural energy power generation device using natural energy.

  2. Description of the Related Art Conventionally, a power generation system that generates power by combining an internal combustion engine power generation device using an internal combustion engine and a natural energy power generation device using natural energy is known (see, for example, Patent Document 1).

  Patent Document 1 discloses a hybrid power generation system in which a diesel power generation device (internal combustion engine power generation device) and a wind power generation device (natural energy power generation device) are combined. The hybrid power generation system described in Patent Document 1 includes a control device that comprehensively controls the diesel power generation device and the wind power generation device, and the sum of the power generation amount by the diesel power generation device and the power generation amount by the wind power generation device is Output control for each power generator is performed so as to satisfy the power demand. In this case, while suppressing the output (power generation amount) of the diesel power generation device as much as possible, control is performed to compensate for the shortage with respect to the power demand by increasing the output (power generation amount) of the wind power generation device. In order to suppress the output of the diesel generator, operation control is performed so as to maintain a minimum output (so that about 50% of the maximum output (minimum allowable output)) that does not generate soot.

Japanese Patent No. 4115747

  However, in the power generation system described in Patent Document 1, in order to maintain the diesel power generation device at about 50% of the maximum output in order to prevent soot generation, even when the amount of power that can be generated by wind power generation increases, It cannot be operated with the output of the diesel generator reduced to less than 50%. In this case, there is a problem that it is difficult to effectively use power generation by wind power generation. On the other hand, when the diesel power generator is operated at less than 50% of the maximum output, soot is generated and the durability (life) of the diesel power generator is reduced.

  The present invention has been made to solve the above-described problems, and one object of the present invention is to provide an internal combustion engine power generator when a natural energy power generator and an internal combustion engine power generator are operated in cooperation. An object of the present invention is to provide a power generation system capable of more effectively using power generation by a natural energy power generation device while suppressing a decrease in life due to generation of soot.

  A power generation system according to a first aspect of the present invention includes an internal combustion engine power generation device that generates power using an internal combustion engine, a natural energy power generation device that is used in combination with the internal combustion engine power generation device and generates power using natural energy, A detection unit that detects the amount of soot in the exhaust gas of the internal combustion engine, and the natural energy power generator when the amount of soot in the exhaust gas of the internal combustion engine detected by the detection unit exceeds a predetermined threshold And a control means for performing control to reduce the amount of power supplied to the load and shift the internal combustion engine to an operation region in which soot can be removed.

  In the power generation system according to the first aspect of the present invention, as described above, the detection unit that detects the amount of soot in the exhaust gas of the internal combustion engine, and the amount of soot in the exhaust gas of the internal combustion engine that is detected by the detection unit. And a control means for performing control to reduce the amount of power supplied from the natural energy power generation device to the load and to shift the internal combustion engine to an operation region in which soot can be removed when the value exceeds a predetermined threshold value. Until the amount of soot detected by the detection unit exceeds a predetermined threshold value, power generation by the natural energy power generation device is performed by operating the internal combustion engine power generation device in an operation region (low load operation region) where soot is generated. Since it can increase as much as possible, the power generation by the natural energy power generation device can be used more effectively. Further, when the amount of soot in the exhaust gas of the internal combustion engine detected by the detection unit exceeds a predetermined threshold, the load distribution between the natural energy power generation device and the internal combustion engine power generation device is changed to operate the internal combustion engine. Since it is possible to automatically shift the soot to an operating range in which soot can be removed (high-load operating range), the soot generated (deposited) in the internal combustion engine is forcibly removed to Can keep good. As a result, when the natural energy power generation device and the internal combustion engine power generation device are operated in cooperation, the power generation by the natural energy power generation device is made more effective while suppressing a decrease in the life due to the soot generation of the internal combustion engine power generation device. Can be used.

  In the power generation system according to the first aspect, preferably, the internal combustion engine includes a diesel engine or a gas engine, and the detection unit is configured to detect the amount of soot in the exhaust gas of the diesel engine or the gas engine. The control means reduces the amount of power supplied from the natural energy generator to the load when the amount of soot in the exhaust gas of the diesel engine or gas engine detected by the detection unit exceeds a predetermined threshold value. And control to shift the diesel engine or the gas engine to an operation range in which soot can be removed. With this configuration, in a diesel engine that injects liquid fuel into hot intake air and self-ignites, and in a gas engine that compresses a mixture of fuel and air and sparks it, the fuel injection amount is reduced. When the operation is continued at a low load (low output), soot is generated inside the engine and easily accumulates on the piston and fuel injection nozzle, so the exhaust of the diesel engine (or gas engine) detected by the detector When the amount of soot in the gas exceeds a predetermined threshold, the load distribution between the natural energy generator and the diesel engine (or gas engine) can be changed to eliminate the soot operation of these internal combustion engines. Can be automatically transferred to a zone. Therefore, when the natural energy power generation device and the internal combustion engine power generation device using the diesel engine or the gas engine are operated in cooperation, a reduction in the life of the internal combustion engine power generation device due to the soot generation of the diesel engine or the gas engine is suppressed. However, it is possible to obtain a power generation system that can use power generation by the natural energy power generation apparatus more effectively.

  In the configuration in which the internal combustion engine includes a diesel engine or a gas engine, preferably, the control unit is configured to control the diesel engine or the gas when the amount of soot in the exhaust gas of the diesel engine or the gas engine exceeds a predetermined threshold value. After the engine is moved to the operating range in which soot can be removed, it is configured to perform control to continue operation in the operating region in which soot can be removed until at least the amount of soot falls below a predetermined threshold. ing. If comprised in this way, the soot deposited in the diesel engine or the gas engine can be removed reliably, and the state and performance of these internal combustion engines can be kept good.

  In the configuration in which the control means performs control to continue the operation in the operation range in which the soot can be removed until at least the amount of soot falls below a predetermined threshold, preferably the control means is a diesel engine or a gas engine When the amount of soot in the exhaust gas exceeds the predetermined threshold, the soot amount falls below the predetermined threshold after the diesel engine or the gas engine is shifted to an operation range in which soot can be removed. It is configured to perform control to continue the operation in the operation range in which it is possible to remove the soot until the predetermined time elapses. With this configuration, the amount of soot in the exhaust gas of the diesel engine or gas engine has fallen below a predetermined threshold in a state where the diesel engine or gas engine has been shifted to an operation range in which soot can be removed. In addition, since the operation in the operation region where the soot can be removed is continued for a predetermined time, the soot accumulated in the diesel engine or the gas engine can be more reliably removed.

  In this case, preferably, after the control means shifts the diesel engine or the gas engine to an operation range in which soot can be removed, the amount of soot falls below a predetermined threshold value, and a predetermined time has elapsed. Based on that, the control to reduce the amount of power supplied from the natural energy power generation device to the load is stopped, and the control to continue the operation in the operation range where the soot of the diesel engine or the gas engine can be removed is stopped. Has been. With this configuration, after removing the soot from the diesel engine or gas engine, increase the power generation by the natural energy generator as much as possible while operating the diesel engine or gas engine in the operating range where soot is generated (low load operating range). Therefore, the power generation by the natural energy power generation device can be used more effectively.

  In the power generation system according to the first aspect described above, preferably, the control means performs internal combustion at a load factor corresponding to an operation region other than the operation region in which soot can be removed before being shifted to the operation region in which soot can be removed. When the operation duration accumulated when the engine is operated exceeds a predetermined allowable time, or the amount of soot in the exhaust gas of the internal combustion engine detected by the detection unit exceeds a predetermined threshold In this case, the control unit is configured to reduce the amount of power supplied from the natural energy power generation device to the load and shift the internal combustion engine to an operation region where soot can be removed. With this configuration, not only when the amount of soot in the exhaust gas exceeds a predetermined threshold, but also when the amount of soot in the exhaust gas does not exceed the predetermined threshold. Renewable energy when the operation continuation time during which the internal combustion engine is operated at a load factor equivalent to an operating range (low-load operating range) other than the operating range (high-load operating range) where soot can be removed exceeds a predetermined allowable time By changing the load distribution between the power generation device and the internal combustion engine power generation device, the operation state of the internal combustion engine in the internal combustion engine power generation device can be automatically shifted to an operation region (high load operation region) in which soot can be removed. In this way, the internal combustion engine can be forcibly shifted to an operation region (high load operation region) where soot can be removed when a predetermined allowable time has passed regardless of whether or not soot is generated in the low load operation region. Therefore, it is possible to more reliably avoid the failure of the internal combustion engine due to the generation of soot while effectively using the power generation by the natural energy power generation device.

  In this case, preferably, the control means adds the operation continuation time of the internal combustion engine when operating at a load factor corresponding to an operation region other than the operation region where soot can be removed to a predetermined allowable time. The time is calculated based on the correction coefficient set for each load factor, and is integrated up to a predetermined allowable time. If comprised in this way, the driving | running continuation time of the internal combustion engine at the time of driving | running with the load factor corresponded to driving | running area | regions other than the driving | operation area | region which can remove soot can be more correctly integrated according to a load factor. As a result, since the state of the internal combustion engine can be grasped more accurately, it is reflected more accurately in the determination as to whether or not to shift to an operation region (high load operation region) where soot can be removed by the control means. Can do.

  In the power generation system according to the first aspect described above, preferably, the control unit is configured so that the amount of soot in the exhaust gas of the internal combustion engine detected by the detection unit or the amount of change in the amount of soot per unit time is the amount of soot and The amount of power supplied from the natural energy generator to the load when a predetermined threshold value or a predetermined soot variation threshold value set for each of the variation amounts of soot amount per unit time is exceeded. And control to shift the internal combustion engine to an operation range in which soot can be removed. With this configuration, not only when the amount of soot in the exhaust gas exceeds a predetermined threshold value, but also the amount of change of the soot amount per unit time exceeds the predetermined soot change threshold value. Even in this case, the load distribution between the natural energy power generation device and the internal combustion engine power generation device can be changed so that the operation state of the internal combustion engine in the internal combustion engine power generation device can be automatically shifted to an operation range in which soot can be removed. The soot generated (deposited) in the engine is forcibly removed, so that the state and performance of the internal combustion engine can be reliably kept good.

  In the power generation system according to the first aspect described above, preferably, the natural energy power generation device includes a wind power generation device, and the control means is configured when the amount of soot in the exhaust gas of the internal combustion engine exceeds a predetermined threshold value. By controlling the pitch angle of the wind power generator, the power generation output amount of the wind power generator is decreased, thereby controlling the power supply amount from the wind power generator to the load. If comprised in this way, the pitch angle of a wind power generator can be controlled by a control means, and the power generation output amount of a wind power generator can be reduced easily. Therefore, as the amount of power supplied from the wind turbine generator to the load is reduced, the control means can surely shift the internal combustion engine to an operation region in which soot can be removed, and soot can be easily removed.

  The power generation system according to the first aspect preferably further includes a power storage unit that stores the power generated by the natural energy power generation device, and the control means has a predetermined threshold amount of soot in the exhaust gas of the internal combustion engine. When the value is exceeded, it is configured to control to reduce the amount of power supplied from the natural energy power generation device to the load by storing a part of the power generation output amount of the natural energy power generation device in the power storage unit. Yes. According to this configuration, it is possible to apparently reduce the amount of power supplied from the natural energy power generation device to the load without unnecessarily reducing the power generation capacity of the natural energy power generation device, so it is possible to eliminate soot from the internal combustion engine. In addition to being able to easily shift to the operating area, the power generated by the natural energy power generation device and stored in the power storage unit can be used effectively and supplied to the load when necessary.

  A power generation system according to a second aspect of the present invention includes a diesel power generation device that generates power using a diesel engine, a natural energy power generation device that is used in combination with a diesel power generation device and generates power using natural energy, and a diesel engine. Detecting unit for detecting the amount of soot in the exhaust gas of the diesel engine, and when the amount of soot in the exhaust gas of the diesel engine detected by the detecting unit exceeds a predetermined threshold, And a control means for controlling the diesel engine to shift to an operation region in which soot can be removed.

  In the power generation system according to the second aspect of the present invention, as described above, the detection unit that detects the amount of soot in the exhaust gas of the diesel engine, and the amount of soot in the exhaust gas of the diesel engine that is detected by the detection unit And a control means for performing control to reduce the amount of power supplied from the natural energy power generation device to the load and to shift the diesel engine to an operation region in which soot can be removed when the energy exceeds a predetermined threshold value. Until the amount of soot detected by the detection unit exceeds a predetermined threshold value, the diesel generator is operated in the operating region where the soot is generated (low-load operating region) to generate power by the natural energy generator as much as possible. Since it can increase, the electric power generation by a natural energy power generation device can be used more effectively. In addition, when the amount of soot in the exhaust gas of the diesel engine detected by the detection unit exceeds a predetermined threshold, the load distribution between the natural energy power generation device and the diesel power generation device is changed to change the diesel in the diesel power generation device. The engine operating state can be automatically shifted to an operating range in which soot can be removed (high-load operating range), so the soot generated (deposited) in the diesel engine is forcibly removed and the state of the diesel engine And the performance can be kept good. As a result, when the natural energy power generation device and the diesel power generation device are operated in cooperation, the power generation by the natural energy power generation device is used more effectively while suppressing the decrease in the life due to the soot generation of the diesel power generation device. be able to.

  In the power generation system according to the second aspect described above, preferably, the natural energy power generation device includes a wind power generation device, and the control means is provided when the amount of soot in the exhaust gas of the diesel engine exceeds a predetermined threshold value. By controlling the pitch angle of the wind turbine generator, the power generation output of the wind turbine generator is reduced, so that the power supply from the wind turbine generator to the load is controlled and soot can be removed from the diesel engine. It is configured to perform control for shifting to the operating range. If comprised in this way, the pitch angle of a wind power generator can be controlled by a control means, and the power generation output amount of a wind power generator can be reduced easily. Therefore, as the amount of power supplied from the wind turbine generator to the load is reduced, the control means can surely shift the diesel engine to an operation region where soot can be removed and easily remove soot.

  According to the present invention, as described above, when the natural energy power generation device and the internal combustion engine power generation device are operated in cooperation with each other, the natural energy power generation is suppressed while suppressing the decrease in the life due to the soot generation of the internal combustion engine power generation device. It is possible to provide a power generation system that can more effectively use power generation by the apparatus.

It is the block diagram which showed the apparatus structure of the electric power generation system by 1st Embodiment of this invention. It is the schematic which showed the structure of the wind power generator which comprises the electric power generation system by 1st Embodiment of this invention. It is the figure which showed the processing flow of the operation control with respect to the wind power generator of a control apparatus in the electric power generation system by 1st Embodiment of this invention. In the electric power generation system by 1st Embodiment of this invention, it is the figure which showed the processing flow of the operation control with respect to the diesel electric power generating apparatus of a control apparatus. In the electric power generation system by 2nd Embodiment of this invention, it is the figure which showed an example of the permissible operating time of the engine set for every load factor of the diesel power generator. It is the figure which showed the processing flow of the control apparatus in the electric power generation system by 2nd Embodiment of this invention. In the power generation system by the modification of 2nd Embodiment of this invention, it is the figure which showed an example of the integration coefficient in the low load operation area of a diesel generator. It is the figure which showed the processing flow of the control apparatus in the electric power generation system by 3rd Embodiment of this invention. It is the block diagram which showed the apparatus structure of the electric power generation system by 4th Embodiment of this invention. It is the figure which showed the processing flow of the control apparatus in the electric power generation system by 4th Embodiment of this invention.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below with reference to the drawings.

(First embodiment)
First, with reference to FIG. 1 and FIG. 2, the structure of the electric power generation system 100 by 1st Embodiment of this invention is demonstrated.

  The power generation system 100 according to the first embodiment is a power generation system that responds to a relatively small power demand in a remote island area (island area). In addition, the power generation system 100 is constructed as an off-grid power generation system that supplies power to a customer in a remote island region independently without being linked to a power system constructed by a power company.

  As shown in FIG. 1, the power generation system 100 is used in combination with a diesel power generation apparatus 20 that generates power using an engine 10 that is a diesel engine, and a diesel power generation apparatus 20, and uses wind energy as natural energy. And a wind power generator 30 for generating power. The engine 10 is an example of the “internal combustion engine” and “diesel engine” of the present invention. The diesel power generator 20 and the wind power generator 30 are examples of the “internal combustion engine power generator” and the “natural energy power generator” of the present invention, respectively.

  In addition, the power generation system 100 includes a control device 50 that performs overall control of the diesel power generation device 20 and the wind power generation device 30. The control device 50 is configured to cooperatively control the diesel power generation device 20 and the wind power generation device 30 according to the power demand W (load 90) at that time and the local weather conditions (wind conditions). That is, the control device 50 performs a role of performing overall output control (power generation amount control) for each power generation device so that the sum of the power generation amount by the diesel power generation device 20 and the power generation amount by the wind power generation device 30 satisfies the load 90. Is responsible. The control device 50 is an example of the “control unit” in the present invention.

  The diesel power generator 20 includes a generator 11 connected to the output shaft of the engine 10. Further, the diesel power generator 20 is connected to the control device 50 so as to be communicable, and is configured such that the rotational speed of the engine 10 is controlled based on a command from the control device 50. Further, the load factor (fuel supply amount) of the diesel power generator 20 is always grasped by the control device 50.

  The wind turbine generator 30 composed of a propeller-type windmill includes a generator 34 described later and a windmill unit 35 connected to a rotating shaft 34 a of the generator 34. Further, the wind power generator 30 is communicably connected to the control device 50, and the control device 50 grasps the rotation speed of the generator 34, and the rotation speed of the generator 34 is determined based on a command from the control device 50. It is configured to be controlled.

  Specifically, as shown in FIG. 2, the wind power generator 30 includes a tower portion 31 that is fixedly installed on the tower base 2 and extends upward, and a nacelle (machine) that is attached to the tower portion 31 so as to be rotatable in a horizontal plane. Chamber) 32. A transmission 33 and a generator 34 are housed in the nacelle 32. Further, the rotating shaft 34 a of the generator 34 is connected to a hub 35 a in the windmill portion 35 in front of the nacelle 32 (upwind side) via the transmission 33. Further, three blades (blades) 36 extending radially are attached to the hub 35a. An anemometer 37 and an anemometer 38 are attached to the upper part of the nacelle 32. The power line 39 connected to the generator 34 is connected to the power receiving / transforming facility 40 via the tower unit 31.

  Further, the blade 36 in the wind turbine unit 35 is configured such that a pitch angle, which is an inclination angle with respect to the rotation surface of the hub 35a, can be controlled. That is, in the wind turbine generator 30, the nacelle 32 is swung so that the windmill unit 35 always faces the windward based on the wind condition (wind speed / wind direction) detected by the anemometer 37 and the anemometer 38, and the blade 36. The rotational speed of the wind turbine unit 35 is controlled by increasing or decreasing the pitch angle. Further, by performing the pitch angle control by the control device 50, not only the rotation speed of the generator 34 at the time of the weak wind is maintained, but also the excessive rotation of the windmill unit 35 at the time of the strong wind is limited, or when the power is unnecessary. Also, the output angle of the wind turbine generator 30 can be controlled by increasing the pitch angle to forcibly reduce the rotational speed of the wind turbine unit 35.

  Here, the outline | summary of the cooperation driving | operation by the control apparatus 50 which combined the diesel generator 20 and the wind power generator 30 is demonstrated. In the following, a power generation facility (power generation system 100) configured by one diesel power generation device 20 and one wind power generation device 30 is assumed, and this power generation facility supplies power to a load 90 as a constant power demand W. The cooperative operation in the case of supplying will be described.

  Specifically, as shown in FIG. 1, first, the wind power generator 30 generates power under an output corresponding to the wind condition (wind speed) at that time based on a command from the control device 50. That is, when the wind turbine unit 35 is rotated in a state where a predetermined pitch angle is given to the blade 36 directed to the windward, the electric power P1 corresponding to the rotational speed of the wind turbine unit 35 is output from the generator 34. . The diesel power generator 20 generates power P2 (= W−P1) obtained by subtracting the power P1 of the wind power generator 30 at that time from the power demand W of the load 90 based on the arithmetic processing of the control device 50. The operation is controlled to That is, the injection of the liquid fuel supplied to the engine 10 is performed so that the electric power P2 required at that time is reliably output while maintaining the power frequency of the electric power supplied to the load 90 with the rotational speed of the generator 11 being maintained. Feedback control is performed to constantly increase or decrease the amount.

  Therefore, when the wind condition is good, the wind turbine unit 35 is actively rotated to generate the maximum power P1 within the rated output range from the wind power generator 30 and supply it to the load 90, while the diesel power generator. No. 20, so-called low load operation is continued, in which power P2 (= W−P1), which is slightly insufficient to compensate for the constant power demand W, is output. On the contrary, when the wind condition is poor, only a small amount of electric power P1 can be obtained from the wind power generator 30, so that the diesel power generator 20 has a high output (in order to make up for the shortage with respect to the constant power demand W). It shifts to so-called high load operation that requires a rated output). That is, even when the required power P2 starts to increase, liquid fuel is supplied to the engine 10 so as to always maintain a constant value (for example, a rotational speed corresponding to 60 Hz) without decreasing the rotational speed (frequency) of the generator 11. Control is performed. Thereby, the power corresponding to the power demand W is always stably supplied from the power generation facility to the load 90.

  In the diesel power generator 20, the case where it is operated at a load factor of less than about 40% (about 10% or more and less than about 40%) corresponds to the above-described operation state called low load operation, and about 50% or more. The case where the vehicle is operated at a load factor of 2 corresponds to the above-described operation state called high-load operation. Further, the operation at a load factor of about 100% corresponds to the rated operation in the diesel power generator 20.

  Further, the wind power generator 30 uses the wind energy and the power P1 fluctuates unexpectedly. Therefore, since the power generation system 100 needs to supply a certain amount of power to the load 90, the output (electric power P2) of the diesel power generation apparatus 20 is also controlled in a coordinated manner so as to always follow an unexpected output fluctuation of the wind power generation apparatus 30. . In this case, when the load factor of the engine 10 repeatedly fluctuates between about 10% and less than about 40% according to the temporal fluctuation of the wind condition (wind speed), or when the wind condition is relatively good, In some cases, the load factor of the engine 10 is maintained at about 10% for a long time. Further, when the wind condition is poor, the load factor of the engine 10 may be raised to about 50% or more. As described above, the engine 10 is used by following the output of the wind power generator 30 so that the low load operation is continued or the vehicle is moved back and forth between the low load operation and the high load operation.

  In the cooperative operation having such a background, in the first embodiment, as shown in FIG. 1, a light transmission type smoke meter 21 is attached to the diesel power generation device 20. The smoke meter 21 is installed in an exhaust gas pipe 12 having a sensor unit 21a extending from the engine 10, and the light intensity when the sensor light directly irradiated to the exhaust gas is absorbed and scattered by the exhaust gas in the sensor unit 21a. And has a function of detecting the light transmission amount (smoke concentration) of the exhaust gas passing through the exhaust gas pipe 12. The control device 50 is configured to grasp the soot measurement amount X contained in the exhaust gas of the engine 10 based on the detection result of the light transmission amount by the smoke meter 21 in a predetermined sampling period. The smoke meter 21 is an example of the “detecting unit” in the present invention, and the soot measurement amount X is an example of the “soot amount in exhaust gas” in the present invention.

  Note that the amount of soot (black smoke) contained in the exhaust gas of the engine 10 varies depending on the combustion state of the fuel in the engine 10. In a diesel engine, as the load factor increases, the fuel injection pump (not shown) becomes higher in pressure and the amount of fuel injection increases, so that fine and mist-like fuel is injected from the fuel nozzle. Since a good combustion state can be obtained in the combustion chamber, the amount of soot generated is small. On the other hand, when the fuel injection pump becomes low pressure and the fuel injection amount is small as the load factor decreases, fuel with a large particle diameter is injected from the fuel nozzle. In this case, the tendency of the fuel to cause incomplete combustion in the combustion chamber increases, and the amount of soot generated increases. In other words, in a high load operation with a load factor of about 50% or more, a good combustion state is continued and the amount of soot generated is relatively small, whereas in a low load operation with a load factor of less than about 40%, incomplete combustion is performed. The amount of soot generated due to is relatively large. Also, the lower the load factor, the more soot is generated.

  Therefore, in the first embodiment, when the soot measurement amount X in the exhaust gas of the engine 10 detected by the smoke meter 21 exceeds the threshold value α, the control device 50 causes the wind power generator 30 to the load 90. The power supply amount is intentionally reduced, and control is performed to shift the engine 10 to an operation region in which soot can be removed based on cooperative operation. The operating range in which soot can be removed in the engine 10 corresponds to an operating range (high load operating range) in which the load factor of the engine 10 is about 70% or more. The threshold value α is an example of the “predetermined threshold value” in the present invention.

  In this case, as shown in FIG. 1, when the control device 50 determines that the soot measurement amount X in the exhaust gas of the engine 10 exceeds the threshold value α, the pitch angle of the blade 36 in the wind power generator 30. By increasing θ (see FIG. 2) by a predetermined amount, the rotational speed of the generator 34 (wind turbine unit 35) is actively reduced to reduce the output (electric power P1) of the wind power generator 30 to thereby reduce wind power generation. Control for intentionally reducing the amount of power supplied from the device 30 to the load 90 is performed. Further, by reducing the output (electric power P1) of the wind power generator 30, the diesel power generation is made up to compensate for the shortage with respect to the power demand W (load 90) in the cooperative operation between the diesel power generator 20 and the wind power generator 30. The apparatus 20 is shifted to a state of high load operation (a high load operation region where the load factor is about 70%). That is, the pressure of a fuel injection pump (not shown) in the engine 10 is increased and the fuel injection amount is increased. Therefore, the engine 10 is shifted from the low-load operation state (incomplete combustion state) in which soot was generated to the high-load operation (complete combustion state) in which soot is hardly generated. Further, in the complete combustion state, the soot adhering and remaining on the inner wall of the cylinder or the top surface of the piston in the engine 10 is also burned and eliminated (removed).

  In this way, in the power generation system 100, when the soot measurement amount X in the exhaust gas of the engine 10 exceeds the threshold value α during normal operation, the rotational speed of the wind turbine unit 35 is intentionally controlled with pitch angle control. Control is performed by forcibly raising the load factor (fuel injection amount) of the engine 10 by lowering and shifting the diesel power generation apparatus 20 to the “soot removal operation mode” in which the soot is removed in the above-described operation region. It is configured to be

  In the first embodiment, when the soot measurement amount X in the exhaust gas exceeds the threshold value α, at least after the engine 10 is shifted to an operation region (soot removal operation mode) in which soot can be removed. Until the soot measurement amount X falls below the threshold value α and a certain time γ (for example, 1200 seconds (20 minutes)) elapses, high load operation with a load factor of about 70% is applied to the engine 10. It is comprised so that control to continue may be performed. The time γ is an example of the “predetermined time” in the present invention.

  Further, in the power generation system 100, after the engine 10 is shifted to an operation region in which soot can be removed, the soot measurement amount X is reduced to a threshold value α or less and the wind power is generated based on the passage of time γ. The control for reducing the amount of power supplied from the power generation device 30 to the load 90 is stopped, and the control for continuing the operation of the engine 10 in the operation region where soot can be removed is also stopped. That is, when the soot measurement amount X falls below the threshold value α and the time γ (1200 rows) has elapsed, the pitch angle of the wind turbine generator 30 that has been temporarily (forcedly) set to a large angle. By reducing θ to a pitch angle θ corresponding to the current wind speed, the number of revolutions of the generator 34 (wind turbine unit 35) is increased, and the power P1 of the wind power generator 30 is increased to the original state. Control for recovering the amount of power supplied from the wind power generator 30 to the load 90 is performed. Thereby, in the temporary high-load operation (soot removal operation mode), the difference in the power supply amount of the wind power generator 30 restored to the load 90 is obtained in the engine 10 in which the soot is removed and returned to a clean state. It is returned to the normal operating state to compensate. Thus, the electric power generation system 100 of 1st Embodiment is comprised.

  Next, with reference to FIGS. 1-4, the processing flow of the control apparatus 50 in the electric power generation system 100 by 1st Embodiment is demonstrated. In the following processing flow, a predetermined condition is satisfied in a state where a certain amount of power is supplied to the load 90 in a normal cooperative operation in which the diesel power generator 20 and the wind power generator 30 are combined. This is the control content executed when That is, while the wind power generator 30 generates power based on the wind speed (wind condition) at that time, the diesel power generator 20 outputs the output of the wind power generator 30 from the constant power demand W based on a command from the control device 50 ( It is assumed that the operation is controlled so that an output (electric power P2) obtained by subtracting electric power P1) is generated.

  First, as shown in FIG. 3, as control contents for the wind power generator 30 (see FIG. 1), in step S1, soot in the exhaust gas of the engine 10 (see FIG. 1) in the diesel power generator 20 (see FIG. 1) is obtained. Whether or not the measurement amount X exceeds the threshold value α is determined by the control device 50 (see FIG. 1). That is, the control device 50 determines whether or not the soot measurement amount X exceeds the threshold value α based on the soot measurement amount X (detection result) in the exhaust gas by the smoke meter 21 (see FIG. 1). In the following, first, a processing flow when the soot measurement amount X discharged from the engine 10 exceeds the threshold value α will be described.

  When it is determined that the soot measurement amount X exceeds the threshold value α by the control device 50 in step S1, whether or not the operating state of the engine 10 in the diesel power generation device 20 has reached the high load operation region in step S2. Is determined by the control device 50. Here, as an example of the determination in step S1, it is determined whether or not the operating state of the engine 10 has reached a high load operation depending on whether or not the current load factor of the engine 10 is 50% or more.

When it is determined in step S2 that the operation state of the engine 10 has not reached the high load operation region (the load factor is less than 50% and is in the low load operation state), in step S3, the wind power generator 30 (FIG. 2), the correction amount β for correcting the pitch angle θ of the blade 36 (see FIG. 2) is changed from the current value to a new value. Specifically, the currently set correction amount β ₀ is changed (updated) to a new correction amount β ₁ (β ₀ <β ₁ ) that is larger than the correction amount β ₀ . Thereafter, in step S4, a timer for counting the duration time during which the engine 10 performs the high load operation is set to the high load operation integration time Tr = 0 as an initial value.

Further, when it is determined in step S2 that the operating state of the engine 10 has reached a high load operating range (load factor is 50% or more) (including a case where the engine 10 is operating at a high load), a processing flow Advances to step S5. In step S5, the correction amount β for correcting the pitch angle θ is not changed and is set to the value at that time (correction amount β ₀ ). In step S6, the timer is incremented by one and added (updated) to the high load operation integration time Tr. In this case, the control cycle Ts is added once to the high load operation integration time Tr.

If it is determined in step S1 that the soot measurement amount X does not exceed the threshold value α by the control device 50 (see FIG. 2), the process flow proceeds to step S7. In step S7, the control device 50 determines whether or not the high load operation integration time Tr of the high load operation being counted (the load factor is 50% or more) exceeds a predetermined time γ (for example, 1200 seconds). The If it is determined in step S7 that the high load operation integrated time Tr of the high load operation has not reached the time γ (the time γ has not elapsed), the process flow proceeds to step S5 to correct the pitch angle θ. Therefore, the correction amount β is not changed and is set to the value at that time (correction amount β ₀ ). In step S6, the timer count is incremented by 1, and the high load operation integration time Tr is added (updated). Also in this case, the control cycle Ts is added once to the high load operation integration time Tr.

  If it is determined in step S7 that the high load operation integrated time Tr of the high load operation has exceeded the time γ, in step S8, the correction amount β for correcting the pitch angle θ is the correction amount β as an initial value. = 0.

  A first process flow in which the process proceeds in the order of steps S1, S2, S3, and S4 described above in accordance with the operation state of the diesel power generator 20, which will be described later, and the wind power generator 30, and steps S1, S2, S5, and S6. Any of the second process flow in which the process proceeds in order, the third process flow in which the process proceeds in the order of steps S1, S7, S5, and S6, and the fourth process flow in which the process proceeds in the order of steps S1, S7, and S8 After the process flow, the process flow proceeds to step S9.

In step S <b> 9, the pitch angle θ of the blade 36 (see FIG. 2) is designated for the wind power generator 30 based on the command from the control device 50. Specifically, when the current pitch angle is the pitch angle θ ₁ , the setting value of the pitch angle θ is updated to a new pitch angle θ (= pitch angle θ ₁ + correction amount β). Therefore, in the wind power generator 30, the blade 36 is rotated so as to have a new pitch angle θ. Thereby, this control flow is once complete | finished.

In the first process flow, a new pitch angle θ = pitch angle θ ₁ + correction amount β ₁ is updated, and in both the second process flow and the third process flow, a new pitch angle θ = pitch angle θ _1. + Correction amount β ₀ (maintenance is maintained), and in the fourth processing flow, the new pitch angle θ is the pitch angle θ corresponding to the wind speed at that time. After the end of this control flow, any one of the first to fourth processing flows shown in FIG. 3 is repeatedly executed after a predetermined control cycle Ts has elapsed.

  Moreover, as shown in FIG. 4, as a control content for the diesel power generator 20 (see FIG. 1), in step S11, the diesel power generator 20 requires based on the current output (electric power P1) of the wind power generator 30. The load factor of the engine 10 (see FIG. 1) corresponding to the output (electric power P2) is calculated by the control device 50. That is, the load factor for obtaining electric power P2 obtained by subtracting the electric power P1 of the wind turbine generator 30 at that time from the constant electric power demand W (load 90) is calculated.

  In step S12, a fuel supply amount corresponding to the calculated load factor is further calculated. In step S13, fuel equal to the calculated fuel supply amount is injected into a cylinder of the engine 10 from a fuel injection pump (not shown). Note that the control flow of steps S11 to S13 is also repeatedly executed every predetermined control cycle Ts. Further, the control flow on the wind power generator 30 side shown in FIG. 3 and the control flow on the diesel power generator 20 side shown in FIG.

  Thus, in the first embodiment, as an overall control operation, when the soot measurement amount X in the exhaust gas of the operating engine 10 exceeds the threshold value α, the pitch of the blades 36 in the wind power generator 30 is determined. The angle θ is gradually increased by the correction amount β, and the amount of power supplied from the wind power generator 30 to the load 90 is decreased. At the same time, the diesel generator 20 is shifted to a high-load operation (soot removal operation mode) corresponding to an operation region in which soot can be removed so as to make up for the shortage with respect to the power demand W (load 90). In this case, in the first embodiment, the load factor of the engine 10 is increased to about 70%. Thereby, the amount of power supplied from the diesel power generator 20 to the load 90 is relatively increased.

  In the first embodiment, after the diesel power generator 20 is shifted to a high load operation (a high load operation region where the load factor is about 70%), the soot measurement amount X decreases below the threshold value α, In addition, the high load operation is continuously continued until the high load operation integration time Tr elapses time γ (1200 seconds). Then, after the soot measurement amount X falls below the threshold value α and the high load operation integration time Tr has passed the time γ (1200 seconds), this high load operation (soot removal operation mode) is terminated. Control is performed. That is, by reducing the pitch angle θ of the wind power generator 30 to the pitch angle θ corresponding to the wind speed at that time, the rotational speed of the generator 34 (wind turbine unit 35) is increased, and the output of the wind power generator 30 ( Control is performed to increase the amount of power supplied from the wind power generator 30 to the load 90 by increasing the power P1) (returning to the original state).

  When the wind condition is good, the output (electric power P1) from the wind power generator 30 to the load 90 is increased, so the engine 10 is shifted to a low load operation and the output (electric power P2) of the diesel power generator 20 Is kept small again. Further, when the wind condition is not good, the output (electric power P1) from the wind power generator 30 to the load 90 is not sufficiently obtained, so that the engine 10 is operated at a high load (for example, load factor) to compensate for the shortage. Is maintained at a high output (electric power P2).

  In the first embodiment, as described above, the smoke meter 21 that detects the soot measurement amount X in the exhaust gas of the engine 10 that is a diesel engine, and the soot measurement in the exhaust gas of the engine 10 that is detected by the smoke meter 21. When the amount X exceeds the threshold value α, the power supply amount from the wind power generator 30 to the load 90 is decreased, and the operating range in which the soot can be removed from the engine 10 (high load operation with a load factor of about 70%) And a control device 50 that performs control of shifting to a soot removal operation mode. Thus, until the soot measurement amount X detected by the smoke meter 21 exceeds the threshold value α, the diesel power generator 20 is operated in an operation region where the soot is generated (a low load operation region where the load factor is less than 40%). By doing so, the power generation by the wind power generator 30 can be increased as much as possible, so that the power generation by the wind power generator 30 can be used more effectively. Further, when the soot measurement amount X in the exhaust gas of the engine 10 detected by the smoke meter 21 exceeds the threshold value α, the load distribution between the wind power generator 30 and the diesel power generator 20 is changed to change the diesel power generator. Therefore, the operation state of the engine 10 at 20 can be automatically shifted to an operation region in which soot can be removed (a high load operation region with a load factor of about 70%). ) The soot can be forcibly removed to keep the engine 10 in good condition and performance. As a result, when the wind power generator 30 and the diesel power generator 20 are operated in a coordinated manner, the power generation by the wind power generator 30 is made more effective while suppressing a decrease in life due to the soot generation of the diesel power generator 20. The power generation system 100 that can be used can be obtained.

  In the first embodiment, the control device 50 controls the wind power generation by controlling the pitch angle θ of the wind power generation device 30 when the soot measurement amount X in the exhaust gas of the engine 10 exceeds the threshold value α. By reducing the power generation output amount (electric power P1) of the device 30, control is performed to reduce the power supply amount from the wind power generation device 30 to the load 90. Thus, the control device 50 can control the pitch angle θ of the wind power generator 30 to easily reduce the power generation output amount (electric power P1) of the wind power generator 30. Therefore, the amount of power supplied from the wind power generator 30 to the load 90 is reduced, so that the controller 50 can reliably operate in an operating range where the soot can be removed from the engine 10 (high load operating range where the load factor is about 70%). The soot can be easily removed by shifting to the above.

  Further, in the first embodiment, when the soot measurement amount X in the exhaust gas of the engine 10 exceeds the threshold value α, the soot measurement amount X is transferred after the engine 10 is shifted to an operation region in which soot can be removed. Continue to operate in the operating range where the soot can be removed (high load operating range where the load factor is approximately 70%) until the time γ falls below the threshold value α and the time γ elapses. The control device 50 is configured to perform control. As a result, the soot can be removed in addition to the fact that the soot measurement amount X in the exhaust gas of the engine 10 has fallen below the threshold value α in a state where the engine 10 has been shifted to an operation region where soot can be removed. Since the operation in the operation region is continued for the time γ, the soot accumulated in the engine 10 can be more reliably removed.

  In the first embodiment, after the engine 10 is shifted to an operation region in which soot can be removed, the soot measurement amount X decreases to a threshold value α or less and the time γ has elapsed, Control that reduces the amount of power supplied from the wind power generator 30 to the load 90 and stops operation in the operating range where the soot of the engine 10 can be removed (high load operating range where the load factor is about 70%). The control device 50 is configured to stop the operation (end the soot removal operation mode). Thereby, after the soot removal of the engine 10, the cooperative operation that increases the power generation by the wind power generator 30 as much as possible while operating the engine 10 in the operation region where the soot is generated (low load operation region where the load factor is less than 40%). Therefore, the power generation by the wind power generator 30 can be used more effectively.

(Second Embodiment)
The second embodiment will be described with reference to FIGS. 1, 2, 5, and 6. In the second embodiment, in the control for shifting to the “soot removal operation mode” in which the engine 10 described in the first embodiment is operated in the operation region in which soot can be removed, the switching control timing is low and low. An example will be described in which the control device 50 is configured to make a determination based on two indicators of the duration of load operation. In the figure, components similar to those in the first embodiment are denoted by the same reference numerals as those in the first embodiment.

  In the power generation system 200 (see FIG. 1) according to the second embodiment of the present invention, in addition to the information on the soot measurement amount X continuously measured by the smoke meter 21 (see FIG. 1), the engine 10 (see FIG. 1). Operation in the operating range in which soot can be removed (soot-removing operation mode), taking into account information on the integrated value of operating time (low-load operating integrated time Tp) that is operated in a low-load operating region where soot is likely to occur ) Is controlled to be performed.

  Here, the allowable operation time for the engine 10 when the engine 10 used in the diesel power generation apparatus 20 (see FIG. 1) is operated at a low load will be described. Specifically, as shown in FIG. 5, the horizontal axis indicates the output (load factor) of the engine 10 (generator 11 (see FIG. 1)) of the diesel power generator 20, and the vertical axis indicates the load factor. An example of the allowable operation time for the engine 10 is shown.

  In this example, when the load factor is less than 2.5%, the allowable operation time is set to 5 minutes, and when the load factor is 2.5% or more and less than 20%, the allowable operation time is set to 10 minutes. When the load factor is 20% or more and less than 30%, the allowable operation time is set to 2 hours. When the load factor is 30% or more and less than 40%, the allowable operation time is set to 8 hours. That is, in each load factor range, it means that low-load operation exceeding the allowable operation time set for each cannot be performed. When the load factor is 40% or more, the allowable operation time is not provided, and it is determined that there is no problem even if continuous operation is performed. Further, a table that defines the allowable operation time of the engine 10 in such a low load operation in a step shape is stored in a memory (not shown) in the control device 50.

  Therefore, in the second embodiment, the low load operation integration that is an integrated value of the operation time of the engine 10 that is operated with irregular up and down fluctuations with time in the range where the load factor is less than 40% according to the wind condition. Either the time Tp exceeds the allowable time τ (for example, 8 hours (480 minutes)) or the soot measurement amount X continuously measured by the smoke meter 21 (see FIG. 1) exceeds the threshold value α. When satisfied, the control device 50 (see FIG. 1) can reduce the amount of power supplied from the wind power generator 30 (see FIG. 1) to the load 90 (see FIG. 1) and can remove the soot of the engine 10. Control is made to shift to the operating range (high-load operating range with a load factor of about 70%) (to shift to the soot removal operating mode). The allowable time τ is an example of the “predetermined allowable time” in the present invention.

  Thus, in the second embodiment, if the soot measurement amount X is less than the threshold value α even in the low load operation, the engine 10 is continuously operated until a time as close as possible to the allowable time τ (8 hours). Is configured to be possible. That is, when the wind condition is favorable, operation control is performed such that the low-load operation of the engine 10 is maintained as long as possible within the allowable time τ so as to generate power using natural energy as much as possible. When the soot measurement amount X exceeds the threshold value α while keeping the low load operation of the engine 10 as long as possible, the load factor of the diesel generator 20 is reduced to about 70% based on the pitch angle control. Switching control to the “soot removal operation mode” to be pulled up is performed.

  Further, in the second embodiment, when the low load operation integrated time Tp has passed the allowable time τ (8 hours), it is unambiguous regardless of whether or not the soot measurement amount X exceeds the threshold value α. Control is performed to reduce the amount of power supplied from the wind turbine generator 30 to the load 90. Therefore, as the output (electric power P1) of the wind power generator 30 decreases, the engine 10 is controlled so that the output (electric power P2) is increased. That is, the engine 10 is temporarily operated at a high load to soot soot on the cylinder inner wall and piston top surface of the engine 10.

  When the output (electric power P1) from the wind turbine generator 30 to the load 90 is decreased after the allowable time τ has elapsed, for example, the pitch angle θ of the blade 36 (see FIG. 2) corresponding to the current output of the wind turbine generator 30 is used. Current pitch angle by using a data table (not shown) in which an output forced decrease pitch angle η that can be forcibly suppressed to a state of 10% (= P1 / 10) is associated with the output. Control for changing from θ to the forced output decrease pitch angle η is performed. Such a data table can be determined in advance when the wind power generator 30 is designed, and is stored on the control device 50 side. In consideration of the actual operation of the power generation system 200, the output forced decrease pitch angle η is uniquely applied when the output is forcibly reduced regardless of the output (power generation amount) of the wind power generator 30 at that time. Is more preferable.

  Next, a processing flow of the control device 50 in the power generation system 200 according to the second embodiment will be described with reference to FIGS. 1, 2, and 6. In the following processing flow, it is premised that normal cooperative operation in which the diesel power generator 20 and the wind power generator 30 are combined is performed.

  First, as shown in FIG. 6, each processing flow from step S1 to S9 is the same as the processing flow (first to fourth processing flow) according to the first embodiment.

  Here, in the second embodiment, after the control is executed based on any one of the processing flows from Steps S1 to S9, a fifth processing flow from Steps S21 to S26 is newly added.

  First, in step S21, the control device 50 (see FIG. 1) determines whether or not the current operating state of the engine 10 (see FIG. 1) in the diesel power generation device 20 (see FIG. 1) is a low load operation state. Is done. In this case, whether or not the operating state of the engine 10 is a low-load operation state is determined based on whether or not the load factor of the engine 10 grasped by the control device 50 is less than 40%.

  If it is determined in step S21 that the operation state of the diesel power generator 20 (engine 10) is a low load operation (load factor is less than 40%), in step S22, the low load operation integration time Tp is one time. The time corresponding to the control period Ts is added. When it is determined in step S21 that the operating state of the engine 10 is not in a low load operation state (the load factor is 40% or more), in step S23, the low load operation integration time Tp is one control cycle. Subtraction is performed for a time corresponding to Ts.

  Thereafter, in step S24, the control device 50 determines whether or not the low load operation integration time Tp of the engine 10 in the diesel power generator 20 has exceeded the allowable time τ (for example, 8 hours (480 minutes)). If it is determined in step S24 that the low load operation integration time Tp of the engine 10 in the diesel power generation apparatus 20 has not reached the allowable time τ (the allowable time τ has not yet elapsed), this control flow is temporarily terminated. . That is, after the predetermined control cycle Ts has elapsed, the present control flow shown in FIG. 6 is executed again.

  If it is determined in step S24 that the low load operation integrated time Tp of the engine 10 in the diesel power generation apparatus 20 has exceeded the allowable time τ, in step S25, the low load operation integrated time Tp is set to the allowable time τ (8 hours). Since it satisfy | filled, the output forced fall pitch angle (eta) for forcibly reducing the output (electric power P1) of the wind power generator 30 is selected. Here, regarding the forced output decrease pitch angle η, the output forced decrease pitch angle η applied when the output is always reduced to a predetermined ratio (for example, 10%) with respect to the current output of the wind turbine generator 30 is expressed in a data table ( (Not shown) may be used, or a constant output forced decrease pitch angle η may be applied regardless of the current output of the wind turbine generator 30. In step S26, the pitch angle θ of the blade 36 (see FIG. 2) in the wind power generator 30 is designated as the output forced decrease pitch angle η based on the command of the control device 50.

  Specifically, the rotation control amount of the blade 36 corresponding to the difference between the current pitch angle θ and the forced output decrease pitch angle η is output to the wind power generator 30. Therefore, in the wind power generator 30, the blade 36 is rotated so that the output forced decrease pitch angle η is obtained. Thereby, this control flow is once complete | finished. Note that after the end of this control flow, the control flow shown in FIG. 6 is executed again after a predetermined control cycle Ts has elapsed.

  As a result, in the second embodiment, as the overall control operation, the low load operation integrated time Tp of the engine 10 that is operated with up / down fluctuations in the range where the load factor is less than 40% is the allowable time τ (8 hours). When the soot measurement amount X in the exhaust gas of the engine 10 during operation exceeds the threshold value α, the control device 50 applies the load from the wind power generator 30 to the load 90. While the power supply amount is reduced, the engine 10 is shifted to an operation range in which soot can be removed (high load operation range where the load factor is about 70%). Then, high load operation with a load factor of about 70% is continued for the high load operation integration time Tr, and when the soot measurement amount X falls below the threshold value α, the original linked operation is returned. In this way, not only the information of the soot measurement amount X by the smoke meter 21 but also the information of the low load operation integration time Tp is taken into account, and the timing for shifting the engine 10 to the operation region where soot can be removed is determined. Yes. In addition, the other structure of the electric power generation system 200 by 2nd Embodiment is the same as that of the said 1st Embodiment.

  In the second embodiment, as described above, the low load operation that is integrated when the engine 10 is operated in the low load operation before the shift to the soot-removable operation region (soot removal operation mode) is performed. When the accumulated time Tp exceeds the allowable time τ or when the soot measurement amount X in the exhaust gas of the engine 10 detected by the smoke meter 21 exceeds the threshold value α, the load from the wind turbine generator 30 The power supply amount to 90 is decreased, and control is performed so that the engine 10 is shifted to an operation region in which soot can be removed (a high load operation region with a load factor of about 70%) (transition to the soot removal operation mode). The control device 50 is configured. Thus, it is possible to remove soot not only when the soot measurement amount X in the exhaust gas exceeds the threshold value α but also when the soot measurement amount X in the exhaust gas does not exceed the threshold value α. The low load operation integration time Tp in which the engine 10 is operated at a load factor corresponding to an operation region (low load operation region where the load factor is less than 40%) other than the operation region (high load operation region) exceeds the allowable time τ. In this case, the load distribution between the wind power generator 30 and the diesel power generator 20 with respect to the electric power demand W is changed, and the operation state of the engine 10 in the diesel power generator 20 is automatically changed to an operation region (soot removal operation mode) in which soot can be removed. Can be migrated. As described above, regardless of whether or not soot is generated in the low load operation region, the operation is compulsory to an operation region (high load operation region) where the soot can be removed from the engine 10 when the low load operation integration time Tp has passed the allowable time τ. Therefore, it is possible to more reliably avoid the failure of the engine 10 due to the generation of soot, while effectively using the power generation by the wind power generator 30.

  In addition to the above effect, the low load operation integrated time Tp is equal to the allowable time τ (8) when the engine 10 is operated at a low load and the soot measurement amount X in the exhaust gas does not exceed the threshold value α. Power supply using the wind power generator 30 as much as possible can be continued until it reaches (time). Also by this, in the power generation system 200, the power generation by the wind power generator 30 can be used more effectively. The remaining effects of the second embodiment are similar to those of the aforementioned first embodiment.

(Modification of the second embodiment)
A modification of the second embodiment will be described with reference to FIGS. 1 and 7. In this modification of the second embodiment, an example will be described in which the control device 50 is configured by incorporating a method different from that of the second embodiment into the method of integrating the low load operation integration time Tp used in the second embodiment. .

  That is, in the second embodiment, when the load factor is in the range of 0% or more and less than 40%, the operation time (actual time) set in a stepwise manner is controlled for each load factor regardless of the load factor. Sequential integration (addition) was performed for a time corresponding to the period Ts. On the other hand, in the modified example of the second embodiment, a method of obtaining the low load operation integration time Tp while varying the operation time integration value for each load factor is applied. Specifically, as shown in FIG. 7, an integration coefficient ζ corresponding to the magnitude of the load factor of the engine 10 is set, and the low load operation integration is performed while varying the integration value of the operation time for each load factor. The time Tp is configured to be obtained.

  For example, when the load factor is 10%, the operation time is added by a factor of 1.0 to the low load operation integration time Tp. That is, when the vehicle is operated at a load factor of 10% during one control cycle Ts (sampling cycle), the integration factor ζ = 1.0, and the control cycle Ts × 1.0 in the low load operation integration time Tp. The operation time (actual time) corresponding to is added. Further, when the vehicle is operated at a 20% load factor during one control cycle Ts, the control cycle Ts × 0.25 is added to the low load operation integration time Tp using the integration coefficient ζ = 0.25. Is added. Further, when the vehicle is operated at a load factor of 30% during one control cycle Ts, the control cycle Ts × 0.15 is set to the low load operation integration time Tp using the integration coefficient ζ = 0.15. Is added. Further, when the vehicle is operated at a load factor of 40% during one control cycle Ts, the control cycle Ts × 0.07 is set to the low load operation integration time Tp using the integration coefficient ζ = 0.07. Is added. The integration coefficient ζ is an example of the “correction coefficient” in the present invention.

  As described above, the operation time based on the integration coefficient ζ individually set according to the load factor of the engine 10 is added to the low load operation integration time Tp so far. Accordingly, the closer the load factor is to 40% in the range of 10% or more and less than 40%, the smaller (shorter) the amount of addition of the integration time to the low load operation integration time Tp is, so the low load operation integration time Tp becomes the allowable time τ. The actual time to reach (8 hours) is longer. That is, even in the low load operation, if the probability that soot is generated is a relatively low operation state, the time for which the low load operation is continued is further extended. Therefore, as long as the wind condition is favorable, it is possible to use power generation mainly by the wind power generator 30 as much as possible.

  In the modified example of the second embodiment, as described above, the low load operation of the engine 10 when the low load operation is performed at a load factor corresponding to an operation region other than the operation region in which soot can be removed (soot removal operation mode). When integrating the integration time Tp up to the allowable time τ, the control device 50 is configured to integrate up to the allowable time τ using the time calculated based on the integration coefficient ζ set for each load factor of the engine 10. . Thereby, the low load operation integration time Tp of the engine 10 when operating at a load factor corresponding to an operation region other than the operation region where soot can be removed can be more accurately integrated according to the load factor. Therefore, as much as the state of the engine 10 can be grasped more accurately, it can be accurately reflected by the determination by the control device 50 as to whether or not to shift to an operation region (high load operation region) in which soot can be removed. . The remaining effects of the modification of the second embodiment are similar to those of the aforementioned second embodiment.

(Third embodiment)
A third embodiment will be described with reference to FIGS. 1 and 8. In the third embodiment, in the switching control to the “soot removal operation mode” described in the first embodiment, the soot amount and the amount of change per unit time of the soot amount are changed. An example in which the control device 50 is configured to make a determination based on an index will be described. In the figure, components similar to those in the first embodiment are denoted by the same reference numerals as those in the first embodiment.

  In the power generation system 300 (see FIG. 1) according to the third embodiment of the present invention, in addition to the information on the soot measurement amount X continuously measured by the smoke meter 21 (see FIG. 1), the soot measurement amount that changes from moment to moment. In consideration of the information on the amount of change ΔX in X, the engine 10 is configured to be controlled to be switched to an operating region in which soot can be removed. The change amount ΔX is an example of the “change amount of soot amount per unit time” in the present invention.

That is, for example, a soot measurement amount X ₁ of the exhaust gas which is currently measured, soot measured quantity X per unit of time is calculated as the difference between the soot measurement amount X ₂ of the exhaust gas is measured after the control cycle Ts The control device 50 is controlled so as to determine whether or not to switch the engine 10 to an operation region in which soot can be removed in consideration of the transition of the change amount ΔX (= (X ₂ −X ₁ ) / Ts) of the engine 10. Configure.

  Thereby, in the third embodiment, when the soot measurement amount X exceeds the threshold value α or the change amount ΔX of the soot measurement amount X exceeds the threshold value δ, the load 90 is applied from the wind power generator 30. In addition to intentionally reducing the amount of power supplied to the vehicle, control is performed to shift the soot 10 to an operation range in which soot can be removed based on cooperative operation (transition to the soot removal operation mode). . The threshold value δ is an example of the “predetermined soot change threshold value” in the present invention.

Explaining this point, in the processing flow in FIG. 8, in step S31, the soot measurement amount X in the exhaust gas of the engine 10 (see FIG. 1) in the diesel power generation apparatus 20 (see FIG. 1) has a threshold value α. It is determined by the control device 50 (see FIG. 1) whether or not the change amount ΔX of the soot measurement amount X has exceeded the threshold value δ. Here, the variation ΔX is the previous (one time of the control cycle Ts before) and soot measured quantity X ₁ of the measured exhaust gas, the soot measurement quantity X in the exhaust gas is measured after the control cycle Ts from the previous A value obtained by dividing the difference from ₂ by the control cycle Ts (= (X ₂ −X ₁ ) / Ts) is referred to.

  If it is determined in step S31 that the soot measurement amount X exceeds the threshold value α by the control device 50, or if it is determined that the change amount ΔX exceeds the threshold value δ, in step S2, diesel power generation is performed. The control device 50 determines whether or not the operating state of the engine 10 in the device 20 has reached high load operation. The processing flow after step S2 is the same as that in the first embodiment.

  Further, when it is determined in step S31 that the measurement amount X of the soot does not exceed the threshold value α by the control device 50, or when it is determined that the change amount ΔX does not exceed the threshold value δ, the processing flow. Advances to step S7. Also in this case, the processing flow after step S7 is the same as that in the first embodiment.

  In the third embodiment, as described above, the soot measurement amount X or the change amount ΔX in the exhaust gas of the engine 10 detected by the smoke meter 21 is the threshold value α or the threshold value set corresponding to each. When the value δ is exceeded, control is performed to reduce the amount of power supplied from the wind power generator 30 to the load 90 and shift the engine 10 to an operation region in which soot can be removed (shift to the soot removal operation mode). The control device 50 is configured as follows. As a result, the wind power generator 30 for the power demand W not only when the soot measurement amount X in the exhaust gas exceeds the threshold value α but also when the soot amount change amount ΔX exceeds the threshold value δ. The load distribution between the diesel generator 20 and the diesel generator 20 can be changed so that the operation state of the engine 10 in the diesel generator 20 can be automatically shifted to an operation region in which soot can be removed. The soot is forcibly removed and the state and performance of the engine 10 can be reliably kept good. The remaining effects of the third embodiment are similar to those of the aforementioned first embodiment.

(Fourth embodiment)
The fourth embodiment will be described with reference to FIGS. 9 and 10. In the fourth embodiment, unlike the first to third embodiments, the control device is configured to shift the diesel power generation device 20 to the above-described “soot removal operation mode” without performing the pitch angle control in the wind power generation device 30. The example which comprised 50 is demonstrated. In the figure, components similar to those in the first embodiment are denoted by the same reference numerals as those in the first embodiment.

  As shown in FIG. 9, the power generation system 400 according to the fourth embodiment of the present invention includes a power storage facility 60 that is electrically connected to the wind power generator 30 in addition to the diesel power generator 20 and the wind power generator 30. Yes. The power storage facility 60 includes a plurality of power storage units 61 made of a lead battery, and a part of the power P1 of the wind power generator 30 can be stored in the power storage unit 61. In addition, the power storage facility 60 is connected to the control device 50 so as to be communicable, and is configured to control charging / discharging of the power to the power storage unit 61 based on a command from the control device 50. The power storage unit 61 is an example of the “power storage unit” in the present invention.

  Thus, in the fourth embodiment, when the soot measurement amount X included in the exhaust gas of the engine 10 detected by the smoke meter 21 exceeds the threshold value α, the power of the wind power generator 30 is controlled by the control device 50. By storing a part of P <b> 1 in the power storage unit 61 in the power storage facility 60, a control for relatively reducing the amount of power supplied from the wind power generator 30 to the load 90 is performed. Therefore, as in the first embodiment, the pitch angle of the blades 36 in the wind power generator 30 is forcibly increased to increase the rotational speed of the generator 34 (wind turbine section 35) despite the favorable wind conditions. Control for reducing the power P1 itself of the wind turbine generator 30 is not performed. In this case, since a part of the electric power P1 of the wind power generator 30 is supplied (accumulated) to the power storage unit 61, the amount of power supplied from the wind power generator 30 to the load 90 is apparently reduced. Therefore, in the cooperative operation of the diesel power generation apparatus 20 and the wind power generation apparatus 30, the diesel power generation apparatus 20 can remove the soot in the engine 10 in order to compensate for the shortage of the power demand W (load 90). It shifts to the state of high load operation (high load operation region where the load factor is about 70%) corresponding to the removal operation mode).

  Further, in the power generation system 400, after the engine 10 is shifted to an operation region in which soot can be removed, the amount of soot is reduced to a threshold value α or less and time γ (1200 seconds) has elapsed. Thus, the operation of storing a part of the power P1 of the wind power generator 30 in the power storage unit 61 is stopped, and the control for reducing the power supply amount from the wind power generator 30 to the load 90 is stopped. Accordingly, the soot removal operation mode of the engine 10 is also stopped. Further, the power stored in the power storage unit 61 is a command from the control device 50 when the power P1 (power generation output amount) of the wind power generator 30 decreases or the power demand W temporarily increases with the wind conditions. Based on the above, the load 90 is appropriately supplied.

  Next, with reference to FIG. 9 and FIG. 10, the process flow of the control apparatus 50 in the electric power generation system 400 by 4th Embodiment is demonstrated.

  As shown in FIG. 10, first, in step S41, whether or not the soot measurement amount X contained in the exhaust gas of the engine 10 (see FIG. 9) in the diesel power generation apparatus 20 (see FIG. 9) exceeds a threshold value α. Is determined by the control device 50 (see FIG. 9). When it is determined that the soot measurement amount X exceeds the threshold value α by the control device 50 in step S41, in step S42, it is determined whether or not the operating state of the engine 10 in the diesel power generation device 20 has reached high load operation ( Whether or not the load factor is 50% or more is determined by the control device 50.

When it is determined in step S42 that the operation state of the engine 10 has not reached high load operation (the load factor is less than 50% and is in a low load operation state), in step S43, the power storage facility 60 (see FIG. 9). ) In the power storage unit 61 (see FIG. 9) is changed from the current value to a new value. Specifically, the current charge amount Z ₀ is changed (updated) to a new charge amount Z ₁ (Z ₀ <Z ₁ ) that is larger than the charge amount Z ₀ . Here, the charge amount Z means the amount of power output (supplied) to the power storage unit 61 among the power generation amount generated by the wind power generator 30 (see FIG. 9) during the control cycle Ts (sampling cycle). To do. Thereafter, in step S44, a timer for counting the duration time during which the engine 10 performs high load operation is initialized (high load operation integration time Tr = 0).

If it is determined in step S42 that the operating state of the engine 10 has reached high load operation (load factor is 50% or more) (including the case where the engine 10 is in high load operation), in step S45, The charge amount Z (output to the power storage unit 61) is left unchanged at the value at that time (charge amount Z ₀ ) without being changed. In step S46, the count of the timer is advanced by one, and the control cycle Ts is added once to the high load operation integration time Tr.

Further, when it is determined in step S41 that the soot measurement amount X does not exceed the threshold value α by the control device 50 (see FIG. 9), in step S47, high load operation during counting (load factor 50% or more) Whether or not the high load operation integrated time Tr exceeds the time γ (1200 seconds) is determined by the control device 50. When it is determined in step S47 that the high load operation integration time Tr of high load operation has not reached time γ, the process flow proceeds to step S45, and the charge amount Z is the value at that time without being changed. (Charged amount Z ₀ ). In step S46, the count of the timer is advanced, and the control cycle Ts is added once to the high load operation integration time Tr.

  If it is determined in step S47 that the high load operation integration time Tr of the high load operation has reached the time γ, in step S48, the charge amount Z is set to Z = 0 as an initial value (state without charge request). Returned.

  The first processing flow that proceeds in the order of steps S41, S42, S43, and S44, and the second processing flow that proceeds in the order of steps S41, S42, S45, and S46 according to the respective load conditions of the diesel power generation device 20 and the wind power generation device 30 After passing through any one of the third processing flow that proceeds in the order of steps S41, S47, S45, and S46 and the fourth processing flow that proceeds in the order of steps S41, S47, and S48, the processing flow proceeds to step S49.

  In step S <b> 49, the charging operation of the wind power generator 30 is specified for the power storage facility 60 based on the command of the control device 50. Thereby, this control flow is once complete | finished. After the end of this control flow, any one of the first to fourth process flows in the present control flow shown in FIG. 10 is executed again after a predetermined control cycle Ts has elapsed.

  Thereby, in 4th Embodiment, when the soot measurement amount X in the exhaust gas of the engine 10 during driving | operation exceeds the threshold value (alpha) as a whole control operation, it is using wind energy and is generating electric power. The operation of charging a part of the power P1 (charge amount Z) of the wind power generator 30 to the power storage facility 60 (power storage unit 61) is executed, and the power supply amount from the wind power generator 30 to the load 90 is reduced. . At the same time, the diesel generator 20 is shifted to a high-load operation (soot removal operation mode) corresponding to an operation region in which soot can be removed to make up for the shortage with respect to the power demand W. Also in the case of the fourth embodiment, the load factor of the engine 10 is increased to about 70%.

  Further, in the fourth embodiment, after the diesel power generation apparatus 20 is shifted to a high load operation (a high load operation region where the load factor is about 70%), the soot measurement amount X decreases below the threshold value α, In addition, the high load operation is continued until the high load operation integration time Tr elapses time γ (1200 seconds). Then, after the soot measurement amount X falls below the threshold value α and the high load operation integration time Tr has passed the time γ (1200 seconds), the operation of charging the power storage unit 61 is stopped, and the engine Control to end 10 high-load operation (soot removal operation mode) is performed.

  In addition, the other structure of the electric power generation system 400 by 4th Embodiment is the same as that of the said 1st Embodiment.

  In the fourth embodiment, as described above, the storage device 60 that stores the power generated by the wind power generator 30 is further provided, and when the amount of soot in the exhaust gas of the engine 10 exceeds the threshold value α, The control device performs control to reduce the amount of power supplied from the wind power generator 30 to the load 90 by storing a part of the output (electric power P1) of the wind power generator 30 in the power storage facility 60 (power storage unit 61). 50. As a result, the amount of power supplied from the wind power generator 30 to the load 90 can be apparently reduced without unnecessarily reducing the power generation capacity of the wind power generator 30, so that the operating range in which soot can be removed from the engine 10 ( High load operating range with a load factor of about 70%), and effectively using the electric power generated by the wind power generator 30 and stored in the power storage facility 60 (power storage unit 61), It can be easily supplied to the load 90 when power is required.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes all modifications within the meaning and scope equivalent to the scope of claims for patent.

  For example, in the said 1st-4th embodiment, the load factor of the engine 10 is set to about 70% based on the pitch angle control of the wind power generator 30 as an example which transfers the diesel power generator 20 to the operation area which can remove soot. Although an example of pulling up has been shown, the present invention is not limited to this. If it is an operation range in which soot can be removed, the load factor of the engine 10 is reduced from a low load operation range (less than about 40% (about 10% or more and less than about 40%) to less than about 70% described above, for example Control may be performed to increase the operating range to a high load operating level of about 60% or about 50% .The set value of the load factor corresponding to the operating range where soot can be removed is the specification of the diesel generator (diesel engine) However, it is more preferable to raise the load factor of the engine 10 to at least about 70% in order to remove the soot in a shorter time.

  Moreover, in the said 1st-4th embodiment, whether the driving | running state of the engine 10 has reached high load driving | running | working by whether the load factor of the diesel generator 20 in operation (engine 10) is 50% or more. Although an example of determining whether or not is shown, the present invention is not limited to this. In the present invention, it may be determined whether or not the operating state of the engine 10 has reached the high-load operating range based on whether the load factor is other than 50%, for example, whether the load factor is 55% or more or 60% or more. . The threshold value for determining the high load operation can also be determined as appropriate depending on the specifications of the diesel power generator (diesel engine).

  In the first to fourth embodiments, an example in which the soot amount of the exhaust gas discharged from the engine 10 (soot measurement amount X) is measured using the light transmission type smoke meter 21 is shown. The invention is not limited to this. For example, the PM (microparticulate matter) collected on the filter member installed in the exhaust gas pipe 12 is irradiated with light (sensor light) and is based on the magnitude (change amount) of the reflectance of the filter member. The soot amount may be measured using a light reflection type smoke meter that measures the smoke concentration of the exhaust gas. However, the use of the light transmission type smoke meter 21 has higher utility value than the light reflection type smoke meter in that the amount of soot can be continuously measured.

  Moreover, in the said 1st-4th embodiment, after raising a load factor to about 70% and making the engine 10 transfer to the operation area (soot removal operation mode) which can remove soot, as time (gamma), 1200 seconds (20 Although the example in which the “soot removal operation mode” is continued until the elapse of minutes) is shown, the present invention is not limited to this. The time γ may be set to other than 1200 seconds depending on the characteristics of the diesel power generation apparatus 20 (engine 10).

  In the second embodiment, the example in which the allowable time τ is set to 8 hours (480 minutes) has been described, but the present invention is not limited to this. For example, the allowable time τ may be set to 30 minutes. That is, when the load factor of the engine 10 is operated for 30 minutes within a range of less than about 40% or when the soot measurement amount X continuously measured by the smoke meter 21 exceeds the threshold value α, the wind turbine generator Control may be performed to shift the power generation amount of 30 to the removal operation mode (the high load operation region where the load factor is about 70%) sooting the engine 10 by forcibly decreasing. The allowable time τ is not limited to 30 minutes, and may be 20 minutes or 10 minutes. In this way, by setting the allowable time τ to a shorter time, the engine 10 can be shifted to the soot removal operation mode more quickly when the engine 10 continues the low load operation. Therefore, the engine 10 caused by the accumulation of soot. Can be prevented in advance.

  Moreover, although the said 1st-4th embodiment showed about the example which applied this invention with respect to the electric power generation systems 100-400 comprised by the one diesel electric power generating apparatus 20 and the one wind power generator 30. The present invention is not limited to this. For example, the present invention may be applied to a power generation system constituted by three diesel power generation devices 20 and five wind power generation devices 30. That is, when the soot measurement amount X in the exhaust gas of any of the three diesel power generators 20 exceeds the threshold value α, of the five wind power generators 30 according to the wind conditions and the like. The power generation output amount is forcibly reduced, and control is performed to shift the engine 10 of the diesel power generation apparatus 20 in which the soot measurement amount X exceeds the threshold value α to an operation region in which soot can be removed. do it.

  Moreover, although the said 1st-4th embodiment showed about the example which comprised the electric power generation systems 100-400 using the diesel electric power generating apparatus 20 carrying the engine 10 which consists of diesel engines, this invention is not limited to this. . In other words, if the internal combustion engine has a reciprocating drive mechanism, the power generation system may be configured using an internal combustion engine power generator equipped with a gas engine other than a diesel engine (an internal combustion engine such as a gas engine or a gasoline engine). . Even in a gas engine that compresses a mixture of fuel and air and ignites sparks, soot operation tends to occur inside the engine if the operation is continued at a low output (light load). Therefore, when the amount of soot in the exhaust gas of the gas engine detected by the detection unit exceeds a predetermined threshold, the load distribution between the natural energy power generation apparatus and the gas engine with respect to the power load is changed to The operation state can be automatically shifted to an operation region in which soot can be removed, and the state and performance of the gas engine can be kept good.

  Moreover, although the said 4th Embodiment showed about the example which comprised the "electric power storage part" of this invention using the electrical storage part 61 which consists of lead batteries, this invention is not limited to this. That is, the book which stores the generated power of the natural energy power generation device (wind power generation device 30) using a secondary battery such as a sodium / sulfur (NaS) battery, a lithium ion battery, or a redox flow battery other than the lead battery. You may comprise the "electric power storage part" of invention. Moreover, you may comprise the "electric power storage part" of this invention using a hydrogen storage apparatus. In this case, the wind power generator and the water electrolysis hydrogen generator are combined to produce hydrogen by the water electrolysis hydrogen generator using the power generated by the wind power generator, and this hydrogen is concentrated in the organic hydride in the hydrogen storage device. -You may make it store with high efficiency. Further, hydrogen may be stored in a compressed gas cylinder. The stored hydrogen is taken out again as electric power by being supplied to the fuel cell system.

  In addition, as other power storage units, the generated power of the wind power generator can also be used as an energy storage form such as the kinetic energy of the rotor in the flywheel device, the compressed air pressure in the compressed air storage device, and the amount of water stored in the pumped-storage power generator. Can be stored. The charge amount Z to the power storage unit 61 shown in the fourth embodiment corresponds to the input power to the electric motor that rotates the rotor in the flywheel device (the electric generator becomes a generator at the time of discharge), and the compressed air storage device Corresponds to the input power to the compressor (compressor) that sends compressed air to the storage container. Further, in the pumped-storage type power generation device, this corresponds to the input power to the pump device that pumps water from the lower reservoir to the upper reservoir.

  Moreover, although the said 1st-4th embodiment showed about the example which comprised the power generation systems 100-400 using the wind power generator 30 which produces electric power using the wind energy as a natural energy, this invention is shown to this. Not limited. That is, you may comprise a power generation system using the solar power generation device (solar panel power generation device) which produces electric power other than wind energy, for example using solar energy. Moreover, you may comprise an electric power generation system using the solar thermal power generation apparatus used as the heat source of steam power generation (steam turbine power generation) by condensing sunlight with the solar furnace which used the lens and the reflective mirror. In this case, one of the generated power of the natural energy power generation device (solar power generation device or solar thermal power generation device) as in the fourth embodiment rather than the method of intentionally reducing the amount of generated power as in the wind power generation device. More preferably, the part is stored in the power storage part.

  In the first to fourth embodiments, the amount of soot in the exhaust gas is detected based on the light transmission amount (smoke concentration) of the exhaust gas measured by the smoke meter 21 at a predetermined sampling period (control period Ts). However, the present invention is not limited to this. In the present invention, the amount of soot in the exhaust gas is calculated based on the “cumulative amount of soot” calculated based on the passage of time of the amount of soot (light transmission amount of exhaust gas (smoke concentration)) measured at each sampling period. You may comprise so that it may detect.

  Moreover, although the said 1st-4th embodiment showed about the example using the wind power generator 30 provided with the tower part 31 fixedly installed in the tower base 2 (ground), this invention is limited to this. I can't. In other words, the power generation system of the present invention may be configured using a retractable wind power generator that can tilt the tower 31 and the entire windmill 35 close to the ground surface during a strong wind. That is, when the amount of soot in the exhaust gas in the diesel power generator exceeds a predetermined threshold, the rotation of the windmill (blade) is reduced or stopped by tilting the tiltable wind power generator by a predetermined angle. The diesel power generation apparatus may be configured to shift to an operation region in which soot can be removed.

  Moreover, although the said 1st-4th embodiment showed about the example which applied this invention with respect to the power generation systems 100-400 constructed | assembled in the remote island area (island area), this invention is not limited to this. For example, it is installed in a desert area, a mountainous area, a dense forest area, and a high latitude area (polar region) as a region other than a remote island area, and requires a certain power demand W although it is not connected to the power system constructed by the power company. The present invention may be applied to a power generation system that is introduced into a plant facility, a research facility, an experimental facility, a test facility, and other facilities (customers) where persons involved in these businesses stay. Alternatively, the present invention may be applied to a power generation system or the like that is introduced into a model district that is configured off-grid on a trial basis even in an area where an electric power system constructed by an electric power company is established.

  In the first to fourth embodiments, for convenience of explanation, the control processing of the control device 50 has been described using a flow-driven flowchart in which processing is performed in order along the processing flow. Not limited. In the present invention, the control processing of the control device 50 may be performed by event driven type (event driven type) processing that executes processing in units of events. In this case, it may be performed by a complete event drive type or a combination of event drive and flow drive.

10 engines (internal combustion engines, diesel engines)
11 Generator 20 Diesel generator (Internal combustion engine generator)
21 Smoke meter (detector)
30 wind power generator 34 generator 35 windmill 38 blade 50 control device (control means)
60 Power Storage Equipment 61 Power Storage Unit (Power Storage Unit)
90 Load 100, 200, 300, 400 Power generation system Tr High load operation integration time Ts Control cycle Tp Low load operation integration time W Electric power demand X Soot measurement (amount of soot in exhaust gas)
ΔX change amount (change amount of soot amount)
Z, Z ₀ , Z ₁ charge amount α threshold (predetermined threshold)
β, β ₀ , β ₁ correction amount γ time (predetermined time)
δ threshold (predetermined soot change threshold)
ζ Integration factor (correction factor)
τ Allowable time (predetermined allowable time)
θ Pitch angle

Claims (12)

An internal combustion engine power generation device that generates power using the internal combustion engine;
A natural energy power generation device that is used in combination with the internal combustion engine power generation device and generates power using natural energy;
A detector for detecting the amount of soot in the exhaust gas of the internal combustion engine;
When the amount of soot in the exhaust gas of the internal combustion engine detected by the detection unit exceeds a predetermined threshold, the amount of power supplied from the natural energy power generation device to the load is reduced, and the internal combustion engine is A power generation system comprising: control means for performing control to shift the soot to an operation range in which soot can be removed. The internal combustion engine includes a diesel engine or a gas engine,
The detection unit is configured to detect the amount of soot in the exhaust gas of the diesel engine or the gas engine,
The control means, when the amount of soot in the exhaust gas of the diesel engine or the gas engine detected by the detection unit exceeds the predetermined threshold, power from the natural energy power generation device to the load 2. The power generation system according to claim 1, wherein the power generation system is configured to perform control to reduce a supply amount and shift the diesel engine or the gas engine to an operation region in which the soot can be removed.   When the amount of soot in the exhaust gas of the diesel engine or the gas engine exceeds a predetermined threshold, the control means shifts the diesel engine or the gas engine to an operation range in which the soot can be removed. The control is performed to continue the operation in the operation range in which the soot can be removed at least until the amount of the soot falls below the predetermined threshold value. Power generation system.   When the amount of soot in the exhaust gas of the diesel engine or the gas engine exceeds a predetermined threshold, the control means shifts the diesel engine or the gas engine to an operation range in which the soot can be removed. After the operation, the amount of soot falls below the predetermined threshold value, and control is performed to continue the operation in the operation range in which the soot can be removed until a predetermined time elapses. The power generation system according to claim 3.   After the control means shifts the diesel engine or the gas engine to an operation range in which the soot can be removed, the amount of soot falls below the predetermined threshold value, and a predetermined time has elapsed. Based on that, the control for reducing the amount of power supplied from the natural energy power generation device to the load is stopped, and the control for continuing the operation of the diesel engine or the gas engine in the operation range in which the soot can be removed is stopped. The power generation system according to claim 4, wherein the power generation system is configured to.   The control means is integrated when the internal combustion engine is operated at a load factor corresponding to an operation region other than the operation region where the soot can be removed before the operation is shifted to the operation region where the soot can be removed. When the operation duration time exceeds a predetermined allowable time, or when the amount of soot in the exhaust gas of the internal combustion engine detected by the detection unit exceeds the predetermined threshold value. 6. The system according to claim 1, wherein control is performed to reduce an amount of power supplied from an energy power generation device to a load, and to shift the internal combustion engine to an operation range in which the soot can be removed. The power generation system described.   The control means is configured to integrate the operation continuation time of the internal combustion engine when operating at a load factor corresponding to an operation range other than the operation range where the soot can be removed to the predetermined allowable time. The power generation system according to claim 6, wherein the power generation system is configured to integrate up to the predetermined allowable time using a time calculated based on a correction coefficient set for each load factor.   The control means is configured so that the amount of soot in the exhaust gas of the internal combustion engine detected by the detection unit or the amount of change per unit time of the soot amount is per unit time of the soot amount and the soot amount. When the predetermined threshold value or the predetermined soot change threshold value set corresponding to each of the change amounts is exceeded, the amount of power supplied from the natural energy power generation device to the load is reduced, The power generation system according to any one of claims 1 to 7, wherein the power generation system is configured to perform control to shift the internal combustion engine to an operation range in which the soot can be removed. The natural energy power generation device includes a wind power generation device,
When the amount of soot in the exhaust gas of the internal combustion engine exceeds the predetermined threshold, the control means controls the pitch angle of the wind power generator to reduce the power generation output amount of the wind power generator. The power generation system according to any one of claims 1 to 8, wherein the power generation system is configured to perform control to reduce a power supply amount from the wind turbine generator to a load by decreasing the power supply amount. A power storage unit for storing power generated by the natural energy power generation device;
The control means stores a part of the power generation output amount of the natural energy power generation device in the power storage unit when the amount of soot in the exhaust gas of the internal combustion engine exceeds the predetermined threshold value. The power generation system according to any one of claims 1 to 8, wherein the power generation system is configured to perform control to reduce a power supply amount from the natural energy power generation apparatus to a load. A diesel generator that generates electricity using a diesel engine;
A natural energy power generation device that is used in combination with the diesel power generation device and generates power using natural energy;
A detector for detecting the amount of soot in the exhaust gas of the diesel engine;
When the amount of soot in the exhaust gas of the diesel engine detected by the detection unit exceeds a predetermined threshold, the amount of power supplied from the natural energy power generation device to the load is reduced, and the diesel engine is A power generation system comprising: control means for performing control to shift the soot to an operation range in which soot can be removed. The natural energy power generation device includes a wind power generation device,
When the amount of soot in the exhaust gas of the diesel engine exceeds the predetermined threshold, the control means controls the pitch angle of the wind power generator to thereby reduce the power generation output amount of the wind power generator. The control is configured to reduce the amount of power supplied from the wind turbine generator to the load by decreasing the power, and to control the diesel engine to shift to an operation region in which the soot can be removed. 11. The power generation system according to 11.

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