JP2004260929A - Wind power generation output stabilizer - Google Patents

Wind power generation output stabilizer Download PDF

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Publication number
JP2004260929A
JP2004260929A JP2003049036A JP2003049036A JP2004260929A JP 2004260929 A JP2004260929 A JP 2004260929A JP 2003049036 A JP2003049036 A JP 2003049036A JP 2003049036 A JP2003049036 A JP 2003049036A JP 2004260929 A JP2004260929 A JP 2004260929A
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Japan
Prior art keywords
power
flywheel
wind
motor generator
active
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Pending
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JP2003049036A
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Japanese (ja)
Inventor
Takashi Majima
Yuji Sasaki
Hidefumi Takada
Narifumi Tojima
裕司 佐々木
隆司 真島
成文 遠嶋
秀文 高田
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Ishikawajima Harima Heavy Ind Co Ltd
石川島播磨重工業株式会社
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Priority to JP2003049036A priority Critical patent/JP2004260929A/en
Publication of JP2004260929A publication Critical patent/JP2004260929A/en
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    • Y02E10/723
    • Y02E10/725
    • Y02E10/766
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/16Mechanical energy storage, e.g. flywheels or pressurised fluids
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E70/00Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30Systems combining energy storage with energy generation of non-fossil origin

Abstract

A wind power generation output stabilizing device capable of stabilizing a flywheel device simultaneously with active power, stabilizing reactive power generated simultaneously with active power, and reducing adverse effects on system power. provide.
A flywheel (22) that stores rotational energy, a motor generator (24) that electrically drives the flywheel or generates power by rotation of the flywheel, and that connects the motor generator and a combined point to each other to form an alternating current of the motor generator. Bi-directional power conversion means 26 for converting the power into the AC power at the synthesis point and converting the AC power at the synthesis point into the AC power of the motor generator; and controlling the bidirectional power conversion means to change the active power and the reactive power. And a control device 30 for suppressing the above.
[Selection diagram] Fig. 1

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a wind power output stabilizing device for stabilizing the output of wind power.
[0002]
[Prior art]
Wind power generation is distributed power generation that generates power using unstable wind power as a power source, and its power output fluctuates greatly due to changes in wind power. In order to stabilize the output of wind power generation using a flywheel device, Patent Literature 1, Patent Literature 2, Patent Literature 3, and the like have been proposed.
[0003]
[Patent Document 1]
JP-A-57-65271 [Patent Document 2]
JP-A-11-299106 [Patent Document 3]
JP 2001-339995 A
As shown in FIG. 8, a "power generation device for power generation" of [Patent Document 1] includes a wind power generator 52, an AC / DC converter 53, an orthogonal converter 54, a power converter 56, a motor / generator 57, and a flywheel. 58, etc., when the AC output of the wind generator 52 is equal to or more than a predetermined value, the power converter 56 operates as an orthogonal converter, and the AC output activates the electric motor / generator 57 so that the wind generator 52 Is stored in the flywheel, and when the AC output of the wind power generator 52 is equal to or less than a predetermined value, the power converter 56 operates as an AC / DC converter to operate the motor / generator 57 by the energy stored in the flywheel. It operates as an AC generator and supplies its output to a power system.
[0005]
As shown in FIG. 9, the “wind power generation power stabilization method and device” of [Patent Document 2] includes a wind power generator 61, a power line 62, a power detector 63, a calculator 64, a controller 65, a flywheel 66, When the power generated by the wind power generator 61 is higher than the average value in a minute unit time, the power that exceeds the average value is converted into rotational energy by the motor / motor 67. When the power generated by the wind power generator 61 is lower than the average value in a minute unit time, the rotational energy of the flywheel 66 is converted into electric power and supplied to the power line 62 when the power is converted. It is.
[0006]
As shown in FIG. 10, the “wind power generation power stabilizing apparatus and method” in [Patent Literature 3] is configured such that the power fluctuation of the power generation output a of the wind power generation facility 71 is charged to a part of the power generation output a in accordance with the rotation. A stabilization control device 73 that stabilizes the flywheel device 72 by controlling the rotation of the flywheel device 72 that discharges electricity. When the output a is small, the mechanical energy stored in the flywheel is converted into electricity by the inverter and discharged to the power system.
[0007]
[Problems to be solved by the invention]
The wind power generation output stabilizing device using the above-described conventional flywheel device can stably supply active power, but has the following problems.
(1) A flywheel device is a device that stores energy by rotating a flywheel at a high speed. Therefore, there is an allowable range of the rotation speed. If the rotation speed exceeds an upper limit, the device may be damaged. Stable operation cannot be performed. Therefore, in order to stably operate the wind power generation for a long period of time, it was necessary to stably operate the flywheel device simultaneously with the active power.
(2) The reactive power generated simultaneously with the active power of the wind power has not been conventionally controlled, and therefore, there is a possibility that the voltage of the system power fluctuates due to the fluctuation of the reactive power.
(3) Use of a bidirectional power converter for stabilizing wind power increases reactive power.
[0008]
The present invention has been made to solve such a problem. That is, an object of the present invention is to provide a wind power generation system that can stabilize a flywheel device simultaneously with active power, stabilize reactive power generated simultaneously with active power, and reduce adverse effects on system power. An object of the present invention is to provide an output stabilizing device.
[0009]
[Means for Solving the Problems]
ADVANTAGE OF THE INVENTION According to this invention, the power generation output of a wind power generator is connected to the combining point which connects to a power system, surplus electric power is branched and stored from a combining point, and insufficient power is supplied to a combining point and output fluctuation is suppressed. A wind power output stabilizing device,
A flywheel for storing rotational energy, a motor generator for electrically driving the flywheel or generating power by rotation of the flywheel, and connecting the motor generator and a synthesis point to combine the AC power of the motor generator with the synthesis point Power conversion means for converting the AC power of the combined point into AC power of the motor generator, and controlling the bidirectional power conversion means to suppress the active power fluctuation and the reactive power fluctuation. And a device for stabilizing wind power generation output.
[0010]
According to the configuration of the present invention described above, the flywheel can be electrically driven to store the surplus power by using the motor generator, or power can be supplied by rotating the flywheel to generate power.
Further, the bidirectional power conversion means can convert the AC power of the motor generator to the AC power at the synthesis point, or can convert the AC power at the synthesis point to the AC power of the motor generator, and can convert the power at the synthesis point. The motor generator can be operated at another frequency while maintaining the alternating current at the predetermined frequency.
Furthermore, the control device controls the bidirectional power conversion means to suppress the active power fluctuation and the reactive power fluctuation, so that the flywheel and the motor generator can be used to stabilize the output fluctuation of the wind power generator, Active power control, reactive power control, and harmonic suppression control can be performed, and the reactive power generated simultaneously with the active power can be stabilized, and harmonics can be suppressed to reduce adverse effects on system power. .
[0011]
According to a preferred embodiment of the present invention, the bidirectional power conversion means converts the DC power into AC power having an arbitrary phase at a synthesis point and converts the AC power at the synthesis point into DC power, and an electric motor. An inverter converts AC power of the generator into DC power and converts DC power into AC power of the motor generator.
[0012]
With this configuration, a bidirectional power conversion unit that generates AC power having an arbitrary power factor can be easily realized by a combination of a converter and an inverter.
[0013]
The control device has an active power control loop and a speed control loop, and increases the gain of the active power control loop when the rotational speed of the flywheel is within a predetermined stable range, and the rotational speed of the flywheel is within a predetermined stable range. When the value exceeds the upper limit or falls below the lower limit, the gain of the speed control loop is increased.
[0014]
With this configuration, when the rotation speed of the flywheel is within the predetermined stable range, priority is given to the active power control, and the active power can be made to match the target value. Further, when the rotation speed of the flywheel exceeds the upper limit or falls below the lower limit of the predetermined stable range, priority is given to speed control, overspeed or stall of the flywheel is prevented, and the flywheel device can be operated stably.
Therefore, the flywheel device can be stabilized simultaneously with the active power.
[0015]
The control device has a reactive power control loop having a reactive power command value limiter calculating unit for calculating the upper limit of the reactive power from the active power command value, and performs the constant power factor operation of the combined point and the active power priority control.
[0016]
With this configuration, a constant power factor operation can be performed at the synthesis point of the wind power generator and the electric power system to stabilize reactive power and reduce adverse effects on system power. Further, the reactive power command value limiter operation unit can suppress the reactive power command value within the capacity range of the converter, thereby realizing active power priority control without increasing the size of the converter.
[0017]
The control device has a wind power generation operation state estimation loop, and performs active power control and / or reactive power control according to the operation state of the wind turbine.
[0018]
With this configuration, fine control can be performed according to the operation state of the wind power generation. For example, by performing the active power control and the reactive power control when the high wind speed is stopped, the power can be compensated at the time of wind power generation cutout.
[0019]
The control device has an overload operation estimation loop that performs overload operation monitoring using the current of the motor generator.
With this configuration, overload operation monitoring can be performed, and the motor capacity can be made smaller than that of the AC / DC converter.
[0020]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each of the drawings, common portions are denoted by the same reference numerals, and redundant description will be omitted.
[0021]
FIG. 1 is an overall configuration diagram of the wind power generation output stabilizing device of the present invention. As shown in this figure, the wind power generation output stabilizing device 10 of the present invention connects the power generation output of the wind power generator 12 to a composite point 16 connected to a power system 14, and branches the surplus power from the composite point 16. It has a function of storing and supplying insufficient power to the synthesis point 16 to suppress output fluctuation.
The wind power generator 12 generates AC power having a frequency equal to that of the power system 14 by wind power, and the generated power is directly supplied to the power system 14 via the synthesis point 16.
[0022]
The wind power generation output stabilizing device 10 of the present invention includes a flywheel 22, a motor generator 24, a bidirectional power converter 26, and a control device 30.
Flywheel 22 is a large rotary body moment of inertia I, the rotational energy as kinetic energy (Iω 2/2: ω is the angular velocity) to store.
[0023]
The motor generator 24 is an AC motor / generator whose output shaft is connected to the flywheel 22. In this example, the motor generator 24 has a high reference speed (for example, 3000 rpm), can perform variable speed operation in a predetermined speed range (for example, 1500 to 4000 rpm), and is stable in a predetermined stable range (for example, 2000 to 3600 rpm). Can drive.
[0024]
With this configuration, the flywheel 22 can be electrically driven by using the motor generator 24 as a motor, and conversely, by using the motor generator 24 as a generator, power can be generated by rotation of the flywheel 22. it can.
[0025]
The bidirectional power converter 26 connects the motor generator 24 and the combining point 16, converts the AC power of the motor generator 24 into the AC power of the combining point 16, and converts the AC power of the combining point 16 into the motor generator. It has the function of converting into 24 AC power.
[0026]
In FIG. 1, the bidirectional power converter 26 includes a converter 26a and an inverter 26b.
[0027]
Converter 26a has a function of converting DC power from inverter 26b into AC power having an arbitrary phase at synthesis point 16 and a function of converting AC power at synthesis point 16 into DC power. Inverter 26b has a function of converting AC power from motor generator 24 to DC power and a function of converting DC power from converter 26a to AC power of motor generator 24. Therefore, the combination of the converter 26a and the inverter 26b implements a bidirectional power converter that generates AC power having an arbitrary power factor.
[0028]
The control device 30 is, for example, a higher-level controller or a control PC, and has a function of controlling the bidirectional power conversion unit 26 and suppressing a change in active power and a change in reactive power. As shown in FIG. 1, the voltage and current of the wind power generation, the voltage and current of the combined point, the flywheel rotation speed, and the current of the motor generator are input to the control device 30, and a reactive power command is output to the converter 26a. Then, a torque command or an active power control command is output to inverter 26b.
[0029]
FIG. 2 is a configuration diagram of the active power control loop 32, the speed control loop 34, and the gain switching determination loop 36 of the present invention.
[0030]
The active power control loop 32 calculates active power from the voltage and current of wind power generation, calculates an active power target value at 32a, finds a deviation between the active power and the target value at 32b, and obtains a gain 1 or a gain 2 at 32c. The deviation is amplified, the phase is compensated by the phase compensation circuit 32d, the deviation from the output command of the speed control loop 34 is determined by 32e, the active power is limited to a predetermined allowable range by the active power limiter 32f, and the inverter 26b is controlled by 32g. To output the active power control command. Therefore, the active power of the wind power generation can be made closer to the active power target value by the active power control loop 32.
[0031]
The speed control loop 34 averages the flywheel rotation speed at 34a, finds a deviation from the flywheel reference rotation speed at 34b, amplifies the deviation at gain 3 or gain 4 at 34c, and performs PID control at the PID circuit 34d. Then, this is converted into electric power and used as an output command of the speed control loop 34. The averaged flywheel rotation speed is limited to a predetermined allowable range by a speed limiter 34e, converted to torque by 34f, and a torque command is output to the inverter 26b. Therefore, the speed control loop 34 can make the rotational speed of the flywheel approach the flywheel reference rotational speed.
[0032]
As shown in the gain switching table 36b, the gain switching determination loop 36 determines whether the active power control is being executed or limited, and the rotation speed control is being executed by the active power control gain switching determination circuit 36a. Gains 1 to 4 are switched.
[0033]
FIG. 3 is an explanatory diagram of a gain switching determination loop of the present invention. In this figure, (A) shows that the active power control is being executed and is being limited, and (B) shows that the rotation speed control is being executed and is being stopped.
In FIG. 3, the horizontal axis represents the reference speed (for example, 3000 rpm) of the motor generator 24, N1 to N10 are predetermined speed ranges (for example, 1500 to 4000 rpm) in which variable speed operation is possible, and N5 to N6 are capable of stable operation. It is a predetermined stable range (for example, 2000 to 3600 rpm).
[0034]
In the active power control loop 32 of the control device 30, when the rotational speeds of the flywheel and the motor generator are within a predetermined stable range (N5 to N6), the gain of the active power control loop 32 is increased (gain 1 is selected), When the value exceeds this range (N7 or more and N4 or less), the gain is decreased (gain 2 is selected), and when the value exceeds this range (N9 or more and N2 or less), the gain is set to 0.
On the other hand, when the rotation speeds of the flywheel and the motor generator are within the predetermined stable range (N3 to N8), the gain of the rotation speed control loop 34 is reduced (gain 3 is selected). The gain of the speed control loop is increased (gain 4 is selected).
[0035]
With this configuration, when the rotation speed of the flywheel is within the predetermined stable range, priority is given to the active power control, and the active power can be made to match the target value. When the rotation speed of the flywheel exceeds the upper limit or falls below the lower limit of the predetermined stable range, speed control is prioritized to prevent overspeed or stall of the flywheel, and the flywheel device can be operated stably.
Therefore, the flywheel device can be stabilized simultaneously with the active power.
[0036]
FIG. 4 is a configuration diagram of the reactive power control loop of the present invention. The reactive power control loop 38 calculates a composite point active power and a composite point power factor command from the composite point voltage and current, and from this, calculates a composite point reactive power target value in the composite point reactive power target value calculation unit 38a. The wind power reactive power is calculated from the power generation voltage and current, the deviation between the combined point reactive power target value and the wind power reactive power is obtained at 38b, the gain / phase compensation is performed by the gain / phase compensation circuit 38c, and the reactive power command value is obtained. The limiter calculator 38d calculates the allowable range of the reactive power from the active power command value, the reactive power limiter 38e limits the reactive power to the allowable range, and outputs the reactive power command to the converter at 38f. Therefore, the reactive power control loop 38 allows the composite point reactive power to approach the composite point reactive power target value.
[0037]
FIG. 5 is an explanatory diagram of a reactive power command value limiter calculation unit according to the present invention. In this figure, the horizontal axis represents the active power, the vertical axis represents the reactive power, and the three circles represent the rated capacity of the motor generator, the rated capacity of the inverter, and the rated capacity of the converter from the inside. The shaded area in the figure is the operating area of the inverter / converter.
The reactive power command value limiter calculating unit 38d calculates a permissible range from the active power command value (horizontal axis) by setting a value on the circumference indicating the rated capacity of the converter as the reactive power.
[0038]
With this configuration, a constant power factor operation can be performed at the synthesis point of the wind power generator and the electric power system to stabilize reactive power and reduce adverse effects on system power. Further, the reactive power command value limiter operation unit can suppress the reactive power command value within the capacity range of the converter, thereby realizing active power priority control without increasing the size of the converter.
[0039]
FIG. 6 is an explanatory diagram of the wind power generation operation state estimation loop of the present invention. Active power and reactive power of wind power are calculated from voltage and current.
[0040]
In the wind power generation operation state estimation loop 40, the operation state of the wind turbine (during the start of the large generator, the start of the small generator, the operation of the large generator, the operation of the small generator, the large generator From the small generator to the small generator, switching from the small generator to the large generator, normal stop, high wind speed / high output stop, etc.), and according to this operation state, as illustrated in 41, Perform an active power control loop and / or a reactive power control loop.
[0041]
With this configuration, fine control can be performed according to the operation state of the wind power generation. For example, by performing the active power control and the reactive power control when the high wind speed is stopped, the power can be compensated at the time of wind power generation cutout.
[0042]
FIG. 7 is a configuration diagram of the overload operation estimation loop of the present invention. In the overload operation estimation loop 42, the deviation between the current value of the motor generator 24 and the rated current value is obtained by 42a, integrated by an integration circuit 42b, compared with the overload set value by a comparator 42c, and the overload set value is calculated. If it exceeds, an overload signal is output.
With this configuration, overload operation monitoring can be performed, and the motor capacity can be made smaller than that of the AC / DC converter.
[0043]
As described above, according to the configuration of the present invention, the motor generator 24 is used to electrically drive the flywheel 22 to store surplus power, or to generate power by rotating the flywheel 22 to supply insufficient power. be able to.
[0044]
Further, the bidirectional power conversion means 26 can convert the AC power of the motor generator 24 into the AC power of the synthesis point 16 or convert the AC power of the synthesis point 16 into the AC power of the motor generator 24, The motor generator 24 can be operated at another frequency while maintaining the power at the combining point 16 at an alternating current of a predetermined frequency.
[0045]
Furthermore, since the control device 30 controls the bidirectional power conversion means 26 to suppress the active power fluctuation and the reactive power fluctuation, the output fluctuation of the wind power generator 12 is reduced by using the flywheel 22 and the motor generator 24. In addition to stabilization, active power control and reactive power control can be performed, reactive power generated simultaneously with active power can be stabilized, and adverse effects on system power can be reduced.
[0046]
It is to be noted that the present invention is not limited to the above-described embodiment, and can be variously changed without departing from the gist of the present invention.
【The invention's effect】
As described above, the wind power generation output stabilizing device of the present invention can stabilize the flywheel device simultaneously with the active power, stabilizes the reactive power generated simultaneously with the active power, and reduces the adverse effect on the system power. It has excellent effects such as being able to reduce.
[Brief description of the drawings]
FIG. 1 is an overall configuration diagram of a wind power generation output stabilizing device of the present invention.
FIG. 2 is a configuration diagram of an active power control loop, a speed control loop, and a gain switching determination loop of the present invention.
FIG. 3 is an explanatory diagram of a gain switching determination loop of the present invention.
FIG. 4 is a configuration diagram of a reactive power control loop of the present invention.
FIG. 5 is an explanatory diagram of a reactive power command value limiter calculation unit according to the present invention.
FIG. 6 is an explanatory diagram of a wind power generation operation state estimation loop of the present invention.
FIG. 7 is a configuration diagram of an overload operation estimation loop of the present invention.
FIG. 8 is a schematic view of a conventional wind power generation output stabilizing device.
FIG. 9 is a schematic diagram of another conventional wind power generation output stabilizing device.
FIG. 10 is a schematic diagram of another conventional wind power output stabilizing device.
[Explanation of symbols]
10 wind power output stabilizing device, 12 wind power generator,
14 power system, 16 composite point, 22 flywheel,
24 motor generator, 26 bidirectional power conversion means,
26a converter, 26b inverter,
30 controller, 32 active power control loop,
34 speed control loop, 36 gain switching judgment loop,
38 reactive power control loop, 38d reactive power command value limiter operation unit,
40 wind power generation operation state estimation loop,
42 Overload operation estimation loop

Claims (6)

  1. A wind power output stabilization device that connects the power output of a wind power generator to a composite point that connects to the power system, branches and stores excess power from the composite point, and supplies insufficient power to the composite point to suppress output fluctuations. And
    A flywheel for storing rotational energy, a motor generator for electrically driving the flywheel or generating power by rotation of the flywheel, and connecting the motor generator and a synthesis point to combine the AC power of the motor generator with the synthesis point Power conversion means for converting the AC power of the combined point into AC power of the motor generator, and controlling the bidirectional power conversion means to suppress the active power fluctuation and the reactive power fluctuation. And a device for stabilizing a wind power output.
  2. The bidirectional power conversion means converts DC power to AC power at a synthesis point and converts AC power at the synthesis point to DC power, and converts AC power of the motor generator to DC power and converts DC power. The wind power generation output stabilizing device according to claim 1, comprising an inverter that converts the AC power of the motor generator into AC power.
  3. The control device has an active power control loop and a speed control loop, and increases the gain of the active power control loop when the rotational speed of the flywheel is in a predetermined stable range, and the rotational speed of the flywheel is in a predetermined stable range. The wind power output stabilizing device according to claim 1 or 2, wherein the gain of the speed control loop is increased when the value exceeds the upper limit or falls below the lower limit.
  4. The control device has a reactive power control loop having a reactive power command value limiter calculating unit that calculates the upper limit of the reactive power from the active power command value, and performs a constant power factor operation of the combined point and active power priority control, The wind power generation output stabilizing device according to claim 3, characterized in that:
  5. The wind power generator according to claim 3, wherein the control device has a wind power generation operation state estimation loop, and performs an active power control loop and / or a reactive power control loop in accordance with the operation state of the wind turbine. Output stabilizer.
  6. The wind power generation output stabilizing device according to claim 3, wherein the control device has an overload operation estimation loop that performs overload operation monitoring using the current of the motor generator.
JP2003049036A 2003-02-26 2003-02-26 Wind power generation output stabilizer Pending JP2004260929A (en)

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JP2007306670A (en) * 2006-05-09 2007-11-22 Fuji Electric Systems Co Ltd Power stabilization system, and power stabilization control program and method
JP2007318883A (en) * 2006-05-24 2007-12-06 Fuji Electric Systems Co Ltd Power stabilizing system, controller, and its control program
KR100912061B1 (en) 2007-11-20 2009-08-12 한국전기연구원 Flexible wind farm output control system and method using multiple flywheel system
WO2010079593A1 (en) * 2009-01-07 2010-07-15 三菱重工業株式会社 Wind power generation device and method for controlling output thereof
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JP4715624B2 (en) * 2006-05-09 2011-07-06 富士電機システムズ株式会社 Power stabilization system, power stabilization control program, and power stabilization control method
JP2011092010A (en) * 2006-05-09 2011-05-06 Fuji Electric Systems Co Ltd Power stabilizing system, power stabilization control program, and power stabilization control method
JP4665831B2 (en) * 2006-05-24 2011-04-06 富士電機システムズ株式会社 Power stabilization system, control device, and control program thereof
JP2007318883A (en) * 2006-05-24 2007-12-06 Fuji Electric Systems Co Ltd Power stabilizing system, controller, and its control program
KR100912061B1 (en) 2007-11-20 2009-08-12 한국전기연구원 Flexible wind farm output control system and method using multiple flywheel system
WO2010079593A1 (en) * 2009-01-07 2010-07-15 三菱重工業株式会社 Wind power generation device and method for controlling output thereof
KR101011558B1 (en) 2009-01-07 2011-01-27 미츠비시 쥬고교 가부시키가이샤 Wind-driven generator and output control method of the same
US8039979B2 (en) 2009-01-07 2011-10-18 Mitsubishi Heavy Industries, Ltd. Wind turbine generator system and method of controlling output of the same
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US8355824B2 (en) 2009-05-20 2013-01-15 Mitsubishi Heavy Industries, Ltd. Wind turbine generator and method of controlling the same
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US8178991B2 (en) 2009-10-15 2012-05-15 Airgenesis Llc Wind power generation system
US8482150B2 (en) 2009-10-15 2013-07-09 Airgenesis Llc Method of power generation
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