JP2003023733A - Wind power generation facility, operation method therefor, and storage medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problems of risk such as damages to apparatuses which may occur, when a power system is closed again and automatic simultaneous-on operation is performed, an electrical shock of workers who perform fault site investigation and fault removal work, caused by a state of residual voltage being kept applied for length of time by a self-excitation phenomenon and also after separation from the power system 1, which occurs if a parallel capacitor 5 is kept connected, though the residual voltage of an induction generator 2 which comprises a wind power generating set attenuates according to a time constant determined by an internal impendence, when applied voltage vanishes. SOLUTION: A first wind power generating set 2, which directly supplies the output of a generator driven by a windmill turbine to an AC system, a second wind power generating set 6 which converts the output of a generator driven by a windmill turbine into a DC once, reconverts it into an AC after that, and supplies it to the AC system, and a controller which output a reactive power command signal to the AC-to-DC converter circuit of this second wind power generating set, to compensate reactive power necessary for operating the first wind power generating set with a reactive power component generated by the second wind power generating set, are provided, and occurrence of the self-excitation phenomenon is prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wind power generation installation including two or more units, a control method therefor, and a recording medium.

[0002]

2. Description of the Related Art FIG. 17 is a block diagram showing a case where two induction machine type wind turbine generators 2 surrounded by a broken line frame are connected to a power system 1 via a bus bar 3 and a circuit breaker 4. In this figure, the induction machine type wind turbine generator 2 is composed of an induction generator 2a and a wind turbine 2b that are normally used, and the outputs of these induction generators 2a are directly supplied to the AC busbars 3, respectively. The term "direct supply" as used herein means that the output of the induction generator 2a is not converted into direct current but is supplied as alternating current. The AC bus 3 is supplemented with the delayed reactive power of the induction machine type wind turbine generator 2 (here, inductive reactive power is referred to as delayed reactive power), and the power factor of the entire generator is close to 1.0. A parallel capacitor 5 for improving the power consumption is connected to the busbar 3-1 of the power system 1 via the circuit breaker 4.

Next, the operation of the system shown in FIG. 17 will be described. In such a configuration, the induction machine type wind turbine generator 2 converts wind energy into rotational energy by the wind turbine 2b to rotate the rotor of the induction generator 2a. Since the stator of the induction generator 2a is excited by the voltage of the AC bus 3, the rotation of the rotor of the induction generator 2a causes a speed electromotive force to be generated in the stator, and the rotational energy is converted into electric energy. Electric power is sent from the wind turbine generator 2 to the power grid 1.

The equivalent circuit of the induction generator 2a is composed of an inductance and a resistance, and a large delayed reactive power is generated during operation, which causes the voltage of the bus bar 3 to be lowered. The parallel capacitor 5 is installed to avoid such a state, and is normally used to compensate the delayed reactive power and operate the induction machine type wind turbine generator in a stable state.

[0005]

When a disturbance such as a lightning strike occurs in the vicinity of the wind power generators in the power system 1 which are interconnected, the protection relay operates and the breaker 4 is opened. is there. Normally, in the induction machine, when the applied voltage disappears, the residual voltage decays with the time constant determined by the internal impedance and finally becomes zero. However, when the parallel capacitor 5 is still connected, the breaker 4 is opened. Even if the induction generator 2a is separated from the grid, a phase-advancing current flows from the induction generator 2a to the parallel capacitor 5, and the voltage generated thereby excites the induction generator and the voltage continues as shown in FIG. The phenomenon appears.

This is called a self-excitation phenomenon, and even though the induction generator is disconnected from the power system 1, a voltage is applied to the separated system forever. The possible effects of such an isolated operation are electric shock to the general public near the accident point, reclosing of the system, equipment damage during automatic insertion, fault point search and fault elimination in the system where an original power outage was expected. There is a fear of electric shock to workers who are working, and it is necessary to take measures to prevent isolated operation.

An object of the present invention is to provide a wind power generation facility and a method for operating the same that improve the operating power factor of the wind power generation device and prevent the self-excitation phenomenon from occurring when the wind power generation device is disconnected from the grid. It is what

[0008]

In order to achieve the above object, the invention according to claim 1 converts wind energy into a rotational force via a wind turbine, and a generator driven by this rotational force. A first wind power generator that directly supplies the output of this generator to an alternating current system; a generator that converts wind energy into rotational force via a wind turbine and is driven by this rotational force; A second wind power generator equipped with an AC-DC converter circuit which once converts the output of the machine into direct current, then converts it into alternating current and supplies it to the alternating current system, and reactive power necessary for operating the first wind power generator. To compensate for the reactive power generated by the second wind power generator,
And a controller for outputting a reactive power command signal to the AC / DC converter circuit of the second wind power generator.

The invention according to claim 2 is the first invention.
The generator of the wind power generator is a induction generator, and the generator of the second wind power generator is an induction generator or a synchronous generator. Further, the invention according to claim 3, Electricity quantity detecting means for detecting the electricity quantity of the first wind power generator, and reactive power adjustment control means for adjusting the reactive power output of the second wind power generator based on the detected electricity quantity. The above-mentioned control device is configured from the above.

According to the inventions of claims 1 to 3, the reactive power necessary for operating the wind power generator directly connected to the AC system is connected to the AC system via the DC circuit. Since the wind power generator is installed so that it can be operated by supplying the reactive power generated by the device, it is possible to omit the installation of the parallel capacitor, which is the main cause of the self-excitation phenomenon. Even when the electric power is separated from the electric power system due to the occurrence of the above, the continuous generation of the induction generator voltage due to the self-excitation phenomenon is eliminated.

According to a fourth aspect of the present invention, an electric quantity detecting means for detecting a total electric quantity of the first wind power generator and the second wind power generator, and the electric quantity detecting means detects the electric quantity. It has a reactive power adjustment control means for adjusting the reactive power output of the second wind turbine generator based on the amount of electricity.

According to a fourth aspect of the present invention, the total amount of electricity in the vicinity of the wind turbine generator directly connected to the AC system and in the vicinity of the wind turbine generator connected to the AC system via the DC circuit is expressed as
Since it is detected by the electricity amount detection means and sent to the reactive power adjustment control means, the reactive power consumed by the wind power generator directly connected to the AC system is compensated to ensure stable operation, and the Since the reactive power compensation is performed by the wind power generator connected via the DC circuit, it is possible to omit the installation of the parallel capacitor, which is the main cause of the self-excitation phenomenon, so that the generator voltage is continuously generated when operating independently. Is eliminated.

Further, the invention of claim 5 is provided with a generator that converts wind energy into rotational force via a wind turbine and is driven by this rotational force, and supplies the output of this generator directly to an AC system. A plurality of first wind power generators and wind energy is converted to rotational force via a wind turbine,
A plurality of second wind power generators each including a generator driven by this rotational force, and an AC / DC converter circuit that once converts the output of the generator into direct current, then converts it back into alternating current, and supplies the alternating current to the alternating current system. In order to compensate the reactive power required for operating the plurality of first wind power generators with the reactive power generated by the operation of the plurality of second wind power generators, the second wind power generator And a controller for outputting a reactive power command signal to the AC / DC converter circuit, wherein the controller is an electricity amount detecting means for detecting a total electricity amount of the first wind power generators in operation of a plurality of units, and the electricity amount detecting means. A reactive power adjustment control means for calculating a total reactive power output adjustment amount of the second wind power generators in operation based on the amount of electricity detected by the amount detecting means; The reactive power adjustment amount in the wind power generator And having a reactive power adjustment amount distribution means for distributing a control target value.

According to the fifth aspect of the present invention, the reactive power required for operating the plurality of wind power generators directly connected to the AC system is connected to the AC system via the DC circuit. The installation configuration of the wind turbine generator that enables the operating state to be supplied by the reactive power generated by the power generation eliminates the installation of the parallel capacitor, which is the main cause of the self-excitation phenomenon, and can prevent disturbances such as lightning strike failures. Even if it occurs and is separated from the power system, the continuous generation of the induction generator voltage due to the self-excitation phenomenon is eliminated.

Further, the invention of claim 6 is characterized in that an electric power storage device is installed in the DC circuit of the AC / DC converter circuit of the second wind power generator. According to the present invention, by storing the electric power energy generated in the wind power generator on the DC circuit, even if the wind condition changes, the power of the wind power generator connected to the AC system via the DC circuit. The output can be kept stable for a certain period of time.

[0016] According to the invention of claim 7, the reactive power consumed by the first wind power generator is supplied to the alternating current system, and at the same time, the self-excitation phenomenon does not occur in the first wind power generator. It is characterized by the installation of parallel capacitors with selected capacitance.

According to the present invention, since the capacity of the parallel capacitor is such that the self-excitation phenomenon does not occur, it is not possible to sufficiently compensate the delayed reactive power of the wind power generator, but a DC circuit is connected to the AC system. Sufficient reactive power compensation becomes possible by combining with the reactive power output of the wind power generators connected together. In addition, since a part of the required reactive power is covered by the parallel capacitor, the converter capacity of the wind turbine generator connected to the AC system via the DC circuit can be reduced.

The invention of claim 8 is characterized in that the quantity of electricity detected by the quantity of electricity detecting means is reactive power. Furthermore, the invention of claim 9 is characterized in that the quantity of electricity detected by the quantity of electricity detecting means is a current reactive component.

Further, the invention of claim 10 includes a generator that converts wind energy into rotational force via a wind turbine and is driven by this rotational force, and supplies the output of this generator directly to an AC system. The first wind power generator, the wind energy is converted into a rotational force via the wind turbine, the generator driven by this rotational force, and the output of this generator is once converted into direct current and then converted into alternating current again. A second wind power generator including an AC / DC converter circuit that supplies power to an AC system,
In the control method of the wind power generation facility, which controls the first and second wind power generation devices by the control device,
The amount of electricity of the first wind turbine generator is detected by detecting the amount of electricity, and reactive power adjustment control is performed to adjust the reactive power output of the second wind turbine generator based on the detected amount of electricity, A control method is characterized in that the reactive power required for controlling the first wind power generator is compensated by the reactive power generated by the second wind power generator. According to this method invention, the same operation as that of the first aspect can be achieved.

Further, the invention of claim 11 is provided with a generator that converts wind energy into a rotational force via a wind turbine and is driven by this rotational force, and the output of this generator is directly supplied to an AC system. The first wind power generator, the wind energy is converted into a rotational force via the wind turbine, the generator driven by this rotational force, and the output of this generator is once converted into direct current and then converted into alternating current again. A second wind power generator including an AC / DC converter circuit that supplies power to an AC system,
In order to compensate the reactive power required for operating the first wind power generator with the reactive power generated by the second wind power generator, the reactive power is supplied to the AC / DC converter circuit of the second wind power generator. A controller is configured by a computer system so as to output a command signal, and the computer system is configured to detect an electric quantity of the first wind turbine generator, and an electric quantity detected by the electric quantity detector. It is a computer-readable recording medium in which a wind power generation facility control program for causing it to function as reactive power adjustment control means for adjusting the reactive power output of the second wind power generator based on the above. According to the present invention, according to the present invention, a general-purpose computer can be used as a control device for wind power generation equipment having the same operation as that of claim 1.

Further, the invention of claim 12 is provided with a generator that converts wind energy into rotational force via a wind turbine and is driven by this rotational force, and the output of this generator is directly supplied to an AC system. The first wind power generator, the wind energy is converted into a rotational force via the wind turbine, the generator driven by this rotational force, and the output of this generator is once converted into direct current and then converted into alternating current again. A second wind power generator including an AC / DC converter circuit that supplies power to an AC system,
In order to compensate the reactive power required for operating the first wind power generator with the reactive power generated by the second wind power generator, the reactive power is supplied to the AC / DC converter circuit of the second wind power generator. A control device that outputs a command signal is configured by a computer, and the computer is configured to detect a total amount of electricity of the first wind power generation device and the second wind power generation device, and this electricity amount detection function. Is a computer-readable recording medium having a control program recorded thereon for functioning as reactive power adjustment control means for adjusting the reactive power output of the second wind power generator on the basis of the amount of electricity detected by. . According to the present invention, a general-purpose computer can be used as an apparatus for controlling wind power generation equipment, which has the same effect as that of claim 3.

Furthermore, the invention of claim 13 comprises a generator that converts wind energy into rotational force via a wind turbine and is driven by this rotational force, and supplies the output of this generator directly to an AC system. And a first wind power generator that converts wind energy into rotational force via a wind turbine,
A second wind power generator equipped with a generator driven by this rotational force, and an AC-DC converter circuit that once converts the output of this generator into direct current, then converts it again into alternating current, and supplies it to an alternating current system; In order to compensate the reactive power required to operate the first wind power generator with the reactive power generated by the second wind power generator, a reactive power command is given to the AC / DC converter circuit of the second wind power generator. A control device that outputs a signal is configured by a computer, and the computer is configured to detect a total amount of electricity when a plurality of the first wind turbine generators are in operation, and an amount of electricity detected by the amount of electricity detection means. A reactive power adjustment control means for calculating a total reactive power output adjustment amount when a plurality of the second wind turbine generators are operating based on the amount;
A reactive power adjustment amount distribution means for distributing the reactive power adjustment amount as a control target value to a plurality of the second wind turbine generators,
It is a computer-readable recording medium in which a control program for wind power generation equipment to function as is recorded. According to this invention, a general-purpose computer is set forth in claim 5.
It is possible to provide a control device for a wind power generation facility that has the same effect as

[0023]

1 is a block diagram of a wind turbine generator according to a first embodiment of the present invention and a controller thereof. In the figure, the elements having the same functions as those in FIG. 17 already described are designated by the same reference numerals, and the description thereof will be omitted in principle.

In FIG. 1, a portion 2 surrounded by a broken line frame is
As described above, the induction generator type wind power generator is composed of the normally used induction generator 2a and the wind turbine 2b, and the output of the induction generator 2a is connected so as to be directly supplied to the AC bus 3. ing.

On the other hand, a portion 6 surrounded by a broken line frame is a wind turbine generator called a DC link type wind turbine generator, which includes a generator 6a such as a synchronous generator or an induction generator and a wind turbine 6.
b, an AC / DC converter (hereinafter, converter) 6c, a DC capacitor 6e, and an AC / DC converter (hereinafter, inverter). Note that, for convenience, the induction machine type wind turbine generator 2 may be referred to as a first generator, and the DC-link wind turbine generator 6 may be referred to as a second generator.

Reference numeral 7 is a control device for controlling the above wind turbine generators 2 and 6, and the DC link wind turbine generator 6 generates reactive power required for operating the induction machine wind turbine generator 2. In order to compensate for the reactive power
It functions to output a reactive power command signal to the AC / DC converter circuit of the C-link type wind turbine generator.

The control device 7 includes an electricity quantity detecting means 7a for taking in the electricity quantity of the induction machine type wind turbine generator 2 measured by the electricity quantity measuring device 8 and electricity taken in by the electricity quantity detecting means 7a. The reactive power adjusting means 7b for outputting the amount of electricity for adjusting the reactive power from the quantity, and the reactive power adjusting means 7
and a converter control system 7c for controlling the inverter 6c based on the output signal of b. Reference numeral 9 is a voltage measuring device for the bus bar 3, and 10 is a current measuring device for measuring the output current of the DC link type power generator.

Next, the operation of the first embodiment will be described. The electricity quantity measuring device 8 measures the electricity quantity e of the induction machine type wind turbine generator 2 and supplies it to the electricity quantity detecting means 7 a provided in the control device 7. As shown in detail in FIG. 2, the electricity quantity detecting means 7a is composed of a low-pass filter 7a-1 and an electricity quantity converter 7a-2. The low-pass filter 7a-1 is a high frequency wave included in the electricity quantity e. The noise and the like are removed, and the electric quantity conversion unit 7a-2 converts the electric quantity e into a signal e representing the electric quantity e. The electricity quantity conversion unit 7a-2 converts, for example, data measured in engineering units into a value represented by the unit method (pu). In FIG. 2, the electric quantity e is converted into a signal e representing the electric quantity e.

This signal e is sent to the reactive power adjustment control means 7b at the next stage. The reactive power adjustment control means 7b is composed of a reactive power conversion section 7b-1 and a reactive power command value calculation section 7b-2 as shown in FIG.

The reactive power conversion unit 7b-1 converts the input signal e into a signal representing the amount of reactive power, and the reactive power command value calculation unit 7b.
-2 is a command signal Qre of the reactive power to be output by the DC link type wind turbine generator 6 based on the signal indicating the reactive power amount.
Calculate f. For example, in order to compensate the delayed reactive power of the induction machine type wind turbine generator 2, the sign of the signal indicating the reactive energy is inverted so that the DC link type wind turbine generator 6 outputs the reactive power. There is a method of using the output command signal Qref. The reactive power output command signal Qref is sent to the converter control system 7c.

The converter control system 7c is constructed as shown in FIG. That is, the voltage measuring device 9 and the current measuring device 1
Output reactive power calculation circuit 7c-1, which inputs voltage Vb and current Ib fetched from 0, constant output reactive power control circuit 7c-2,
Voltage V taken from the voltage measuring device 9 and the current measuring device 10
b, output active power calculation circuit 7c-3 for inputting current Ib, output active power constant circuit 7c-4, subtractors 7c-5, 7c-6, reactive power output command signal Qref, and active power output set separately from outside The output power limiting circuit 7c-7 for inputting the command signal Pref, the voltage measuring device 9 and the current measuring device 10
AC voltage tracking control circuit 7c-8 for inputting the voltage Vb and the current Ib fetched from the voltage V fetched from the voltage measuring device 9
Phase detection circuit 7c-9 for inputting b, PWM control circuit 7c-
10, the ignition pulse generating circuit 7c-11.

The reactive power output command signal Qref
And the effective power output command value Pre set separately from the outside
f is input to the output power limiting circuit 7c-7, and the inverter 6
Do not exceed the rated capacity S of d under the following conditions.
Is limited.

[0033]

[Equation 1]

On the other hand, the voltage measuring device 9 and the current measuring device 1 shown in FIG.
The voltage Vb and the current Ib obtained at 0 are input to the output reactive power calculation circuit 7c-1 and the output active power calculation circuit 7c-3 as described above, and the output reactive power calculation circuit 7c-1 outputs D
Calculate the output reactive power Qb of the C-link type wind power generator,
The output active power calculation circuit 7c-3 calculates the output active power Pb. The constant output reactive power control circuit 7c-2 controls the difference between the command value Qr obtained by the subtractor 7c-5 and the measured value Qb (Qr-
Qb) is input and the reactive current command value Iqr given to the alternating current tracking control circuit 7c-8 is calculated so that Qb approaches Qr.

Similarly, the output active power constant control circuit 7c-4
Is an effective current command given to the AC current tracking control circuit 7c-8 so that Pb approaches Pr by inputting the difference (Pr-Pb) between the command value Pr and the measured value Pb obtained by the subtractor 7c-6. Calculate the value Ipr. The output reactive power constant control circuit 7c-2 and the output active power constant control circuit 7c-4 are, for example, control circuits in which circuits such as proportional, integral, and differential circuits are combined.

The AC current follow-up control circuit 7c-8 inputs the reactive current command value Iqr, the active current command value Ipr, the voltage Vb, the current Ib, and the output θb of the phase detection circuit 7c-9, and inputs the reactive current of the current Ib. Component and active current component are Iqr and Ip, respectively
The crest value Vc of the reference sine wave used in the PWM control circuit 7c-10 and the phase difference θc between the bus voltage Vb are output so as to approach r.

The PWM control circuit 7c-10 creates a signal indicating the on / off timing (firing timing) of the switch element from the intersection of the reference sine wave and the carrier wave and sends it to the firing pulse generating circuit 7c-11. Firing pulse generation circuit 7
c-11 amplifies the signal from the PWM control circuit 7c-10 to create an on / off signal for the switch element, and sends it to the switch element of the inverter 6d. As a result, the reactive power according to the command value is output from the DC link type wind turbine generator 6, and the reactive power of the induction machine type wind turbine generator 2 is compensated.

According to the present embodiment, the reactive power consumed by the induction machine type wind turbine generator is compensated by the reactive power of the DC link type wind turbine generator and stable operation is possible, which is the main cause of the self-excitation phenomenon. Since it is possible to omit the installation of a certain parallel capacitor, it is possible to eliminate the continuous generation of the generator voltage during the islanding operation.

(Second Embodiment) FIG. 5 shows a second embodiment of the present invention.
FIG. 1 is a configuration diagram of a wind turbine generator according to an embodiment and a controller thereof. In the figure, elements having the same functions as those in FIGS. 17 and 1 which have already been described are designated by the same reference numerals, and the description thereof will be omitted.

The difference between FIG. 5 and FIG. 1 is that the electrical quantity measuring device 8
In the case of FIG. 1, the installation location of a is between the induction machine type wind turbine generator 2 and the bus bar 3, whereas in the case of the embodiment of FIG. 5, it is installed at the connection point between the bus bar 3 and the power system 1. is there. In the present embodiment, not only the output electric quantity of the induction machine type wind turbine generator 2 is measured but the output electric quantity of the induction machine type wind turbine generator 2 and the output electric quantity of the DC link type wind turbine generator 6 are measured. That is, the total amount of electricity is measured.

Next, the operation of this embodiment will be described. The electric quantity measuring device 8a includes an induction machine type wind turbine generator 2 and D
The total amount of electricity e of the C-link type wind turbine generator 6 is measured,
The electric quantity detecting means 7a receives the electric quantity e of the electric quantity measuring device 8a. The function of the electric quantity detecting means 7a is similar to that in the case of FIG. 1 described above.

The reactive power adjustment control means 7b is composed of a reactive power conversion unit 7b-1 and a reactive power command value calculation unit 7b-2 as shown in FIG. Reactive power conversion unit 7b-1
Converts the input signal e into a signal representing the amount of reactive power, and the reactive power command value calculation unit 7b-2 uses the signal representing the amount of reactive power to generate the reactive power that the DC-link wind turbine generator 6 should output. The power command signal Qref is calculated.

In the present embodiment, the delayed reactive power of the induction machine type wind turbine generator 2 is compensated by the leading reactive power output from the DC link type wind turbine generator 6, so that the induction machine type wind turbine generator 2 is obtained. And the total reactive power of the DC-link type wind turbine generator 6, that is, the reactive power output command signal Qref is determined so that the reactive power that appears at the interconnection point when the entire wind turbine generator is viewed from the AC system 1 becomes zero. .

This determined reactive power output command signal Qre
f is sent to the converter control system 7c. The subsequent operation is similar to that of the first embodiment. As a result, the DC link type wind turbine generator 6 outputs the reactive power according to the command value,
The reactive power of the induction machine type wind turbine generator 2 will be compensated.

According to the present embodiment, the reactive power consumed by the induction machine type wind power generator is compensated by the reactive power of the DC link type wind power generator to allow stable operation, which is the main cause of the self-excitation phenomenon. Since it is possible to omit the installation of a certain parallel capacitor, it is possible to eliminate the continuous generation of the generator voltage during the islanding operation.

(Third Embodiment) FIG. 6 shows a third embodiment of the present invention.
FIG. 1 is a configuration diagram of a wind turbine generator according to an embodiment and a controller thereof. In the figure, elements having the same functions as those already described in FIG. 17, FIG. 1 and FIG. 5 are assigned the same reference numerals and explanations thereof will be omitted.

FIG. 6 shows a system configuration in which two induction machine type wind turbine generators 2 and two DC link type wind turbine generators 6 are connected to the bus bar 3, respectively. Numbers 1 and -2 are attached. Also, 7-
Reference numeral 1 is a control device of the wind power generator, and is an electric quantity detecting means 7
a, reactive power adjusting means 7b, reactive power adjusting amount distributing means 7
f and a converter control system 7c-1. The control device 7-2 of the wind turbine generator is composed of a converter control system 7c-2.

Next, the operation of this embodiment will be described. The electric quantity measuring device 8a includes two induction machine type wind turbine generators 2
And the total amount of electricity e of the two DC-link type wind turbine generators e
Is measured and sent to the electricity quantity detecting means 7a. The operation of the electric quantity detecting means 7a is similar to the operation described in the first embodiment.

As shown in FIG. 3, the reactive power adjustment control means 7b includes a reactive power conversion unit 7b-1 and a reactive power command value calculation unit 7b.
It consists of b-2. The reactive power conversion unit 7b-1 converts the input signal e into a signal representing the reactive power amount, and the reactive power command value calculation unit 7b-2 uses the two DC link type units based on the signal representing the reactive power amount. The command signal Qref of the total reactive power that the wind turbine generator 6 should output is calculated.

In this embodiment, the total delayed reactive power of the two induction machine type wind turbine generators 2 is compensated by the total lead reactive power output from the two DC link type wind turbine generators 6. Therefore, the total reactive power of the two induction machine type wind turbine generators 2 and the two DC link type wind turbine generators 6,
That is, the reactive power output command signal Qref is determined so that the reactive power that appears at the interconnection point when the entire wind turbine generator is viewed from the AC system 1 becomes zero.

This determined reactive power output command signal Qre
f is sent to the reactive power adjustment amount distribution means 7f. The reactive power adjustment amount distribution means 7f outputs the total reactive power command signal Qref to be output by the two DC link type wind turbine generators 6 according to the operating states of the two DC link wind turbine generators 6.
Distribute to ref1 and Qref2.

For example, when one DC link type wind turbine generator is stopped, the reactive power command value Qref1 = Qref of the operating DC link wind turbine generator is set, and the other is set to Qref.
2 = 0.

When the reactive power output of one DC-link type wind power generator is insufficient, the reactive power output of the DC-link type wind power generator having a margin is increased to operate regardless of the operating state. The reactive power output command signals Qref1 and Qref2 of the two DC link type wind turbine generators are determined so that Qref1 + Qref2 = Qref holds.

The determined Qref1 and Qref2 are sent to the converter control system 7c-1 and the converter control system 7-2, respectively. The operation of the converter control system for 7c-1 and 7c-2 is the same as that of the first embodiment, and therefore will be omitted.

As a result, the total reactive power according to the command value is output from the two DC-link type wind turbine generators 6, and the total reactive power of the two induction machine type wind turbine generators 2 is compensated. Become.

The above description is based on the system of two induction machine type wind power generators and two DC link type wind power generators.
Even in the case of a system of n induction machine type wind turbine generators and m DC link type wind turbine generators, the basic idea remains the same.

According to this embodiment, the total reactive power consumed by the n induction machine type wind turbine generators is m DCs.
Compensated by the total reactive power of the link type wind power generator, stable operation is possible, and the installation of the parallel capacitor, which is the main cause of the self-excitation phenomenon, can be omitted. It can be resolved.

(Fourth Embodiment) FIG. 7 shows a fourth embodiment of the present invention.
FIG. 1 is a configuration diagram of a wind turbine generator according to an embodiment and a controller thereof. In the figure, elements having the same functions as those in FIGS. 17 and 1 which have already been described are designated by the same reference numerals, and the description thereof will be omitted. The present embodiment is characterized in that a power storage device 6f is provided between the DC capacitor terminals of the DC link type wind turbine generator 6 of the first embodiment.

Next, the operation of the fourth embodiment will be described. The electricity quantity measuring device 8 measures the electricity quantity e of the induction machine type wind turbine generator 2, and the electricity quantity detecting means 7a receives the electricity quantity e of the electricity quantity measuring device 8. The operation of the control device 7 of the wind turbine generator is the same as the operation described in the first embodiment. Next, the operation of the power storage device 6f will be described. When the air volume increases and the active power output of the generator 6a increases, the AC / DC converter 6c converts the increased amount into DC power. The increased DC power is stored in the power storage device 6f. Conversely, when the air volume decreases, the power storage device 6f is discharged, and the voltage of the DC capacitor is kept constant, so that the output of the AC / DC converter 6d is kept constant,
As a result, even if the air volume changes, the DC link type wind turbine generator 6 outputs the reactive power according to the command value, and the reactive power of the induction machine type wind turbine generator 2 is compensated.

According to the present embodiment, the reactive power consumed by the induction machine type wind turbine generator is compensated by the reactive power of the DC link type wind turbine generator and can be operated stably, which is the main cause of the self-excitation phenomenon. Since it is possible to omit the installation of a certain parallel capacitor, it is possible to eliminate the continuous generation of generator voltage during standalone operation, and to keep the active / reactive power output of the DC-link type wind power generator constant even if the air volume changes. It is possible to provide a configuration of a wind turbine generator that can be maintained and a controller thereof.

(Fifth Embodiment) FIG. 8 shows the fifth embodiment of the present invention.
FIG. 3 is a configuration diagram of a wind turbine generator according to the embodiment and a controller thereof. In the figure, FIG.
Elements having the same functions as those in FIG. 1 are designated by the same reference numerals, and description thereof will be omitted. In the present embodiment, the parallel capacitor 5'having a capacity such that the self-excitation phenomenon does not occur with respect to the connecting wire.
It is characterized by connecting.

Next, the operation of this embodiment will be described. The electricity quantity measuring device 8 measures the electricity quantity e of the induction machine type wind turbine generator 2, and the electricity quantity detecting means 7a receives the electricity quantity e of the electricity quantity measuring device 8. The operation of the control device 7 of the wind turbine generator and the DC link type wind turbine generator 6 is the same as the operation described in the first embodiment.

Next, the operation of the parallel capacitor of 5'capacity that does not cause the self-excitation phenomenon will be described. The parallel capacitor 5 ′ has a function of supplying the reactive power consumed by the induction machine type wind turbine generator 2 and improving the power factor of the induction machine type wind turbine generator 2. However, when all the reactive power consumed by the induction machine type wind turbine generator 2 is supplied by the parallel condenser, the capacity of the parallel condenser increases and a self-excitation phenomenon occurs when the entire wind turbine generator is disconnected from the power system 1. It is more likely to occur. The parallel capacitor having a capacity that does not cause the self-excitation phenomenon has a function of supplying a part of the reactive power consumed by the induction machine type wind turbine generator 2 and reducing the amount of output reactive power of the DC link type wind turbine generator 6. . The capacitance that does not cause the self-excitation phenomenon of the parallel capacitor is determined by conducting a simulation analysis etc. before installation.

According to the present embodiment, the reactive power consumed by the induction machine type wind turbine generator is compensated by the total reactive power of the parallel capacitor having the capacity that does not cause the self-excitation phenomenon and the DC link type wind turbine generator. Thus, the DC link type wind turbine generator can be operated in a stable manner, the rated capacity of the DC link type wind turbine generator can be reduced, and the generator voltage can be prevented from being continuously generated during the islanding operation.

(Sixth Embodiment) FIG. 9 shows a sixth embodiment of the present invention.
FIG. 3 is a configuration diagram of a wind turbine generator according to the embodiment and a controller thereof. In the figure, FIG.
Elements having the same functions as those in FIG. 1 are designated by the same reference numerals, and description thereof will be omitted.

In FIG. 9, 7d is a reactive power detecting means. As shown in FIG. 10, the reactive power detecting means 7d is 2
It is composed of two low-pass filters 7d-1-1 and 7d-1-2 and a reactive power calculator 7d-2. Further, the reactive power adjustment control means 7b has a reactive power command value calculation unit 7b as shown in FIG.
It consists of -2.

Next, the operation of the sixth embodiment will be described. In this embodiment, the electric quantity measuring device 8 shown in the first embodiment is composed of a current measuring device 10 and a voltage measuring device 9,
Further, the electricity amount detecting means 7a is replaced with a reactive power detecting means 7d.

The current measuring device 10 connected to the induction machine type wind turbine generator 2 measures the current Iw of the induction machine type wind turbine generator 2 and sends it to the reactive power detecting means 7d. On the other hand, the voltage measuring device 9 measures the voltage Vb of the bus 3 and sends it to the reactive power detecting means 7d. In the reactive power detecting means 7d, the measured voltage Vb and current Iw are low-pass filters 7d-1-1 and 7d-, respectively.
The high-frequency noise components are input to 1-2, the high-frequency noise components are removed, and they are sent to the reactive power calculation unit 7d-2. The reactive power calculation unit 7d-2 calculates the reactive power Q of the induction machine type wind turbine generator 2 from the detected voltage and current, and the reactive power adjustment control means 7 is calculated.
Send to b. Subsequent operations are the same as in the case of the first embodiment.

According to the present embodiment, the reactive power consumed by the induction machine type wind power generator is compensated by the reactive power of the DC link type wind power generator to allow stable operation, which is the main cause of the self-excitation phenomenon. Since it is possible to omit the installation of a certain parallel capacitor, it is possible to eliminate the continuous generation of generator voltage during standalone operation, and to keep the active / reactive power output of the DC-link type wind power generator constant even if the air volume changes. It is possible to provide a configuration of a wind turbine generator that can be maintained and a controller thereof.

Since the same voltage measuring device as that used in the converter control system can be applied, the number of measuring devices can be reduced.

(Seventh Embodiment) FIG. 12 is a configuration diagram of a wind turbine generator and a control system therefor according to a seventh embodiment of the present invention. In the figure, FIG.
7, elements having the same functions as those in FIG. 1 are designated by the same reference numerals, and the description thereof will be omitted.

In FIG. 12, 7e is a reactive current detecting means. The reactive current detecting means 7e, as shown in FIG.
Two low-pass filters 7e-1 and reactive current calculator 7e-2
Composed of.

Next, the operation of the seventh embodiment will be described. In the present embodiment, the electric quantity measuring device 8 shown in the first embodiment is composed of a current measuring device 10 and a voltage measuring device 9, and the electric quantity detecting means 7a is a reactive current detecting means 7e. The current measuring device 10 connected to the induction machine type wind turbine generator 2 measures the current Iw of the induction machine wind turbine generator 2 and sends it to the reactive current detecting means 7e. On the other hand, the voltage measuring device 9 measures the voltage Vb of the bus 3 and sends it to the reactive current detecting means 7e. In the reactive current detecting means 7e, the measured current Iw and voltage Vb are low-pass filters 7e-1-1 and 7e-1-, respectively.
The high-frequency noise components are input to each of the two, and the high-frequency noise components are removed and sent to the reactive current calculation unit 7e-2.

The reactive current calculator 7e-2 calculates the reactive current IQ of the induction machine type wind turbine generator 2 from the detected current and voltage and sends it to the reactive power adjustment control means 7b. The subsequent operation is the same as that of the first embodiment.

According to the present embodiment, the reactive power consumed by the induction machine type wind turbine generator 2 is compensated by the reactive power of the DC link type wind turbine generator 6 for stable operation, and the main self-excitation phenomenon occurs. Since the installation of the parallel capacitor, which is the cause, can be omitted, it is possible to eliminate the continuous generation of generator voltage during independent operation, and the active / reactive power output of the DC-link type wind power generator even if the air volume changes. Can be kept constant. Further, since the same voltage measuring device as that used in the converter control system can be applied, the number of measuring devices can be reduced.

(Eighth Embodiment) FIG. 14 is a diagram showing a medium on which information and programs according to an eighth embodiment of the present invention are recorded. In the figure, 11 is a flexible magnetic disk which is an example of a recording medium. Reference numeral 12 denotes information and programs for causing the configuration of the wind turbine generator shown in the first section and its control device to function, which will be described below in 12-1.
Perform steps from 1 to 12-6 in order.

First, in step 12-1, the data of the electric quantity e is read, and in the next step 12-2, the signal processing operation of the low pass filter is performed. Further, in the next step 12-3, a process of converting the electric quantity e into a signal e is performed, and then in a step 12-4, a processing of converting the electric quantity e into reactive power Q is performed. After performing the process of calculating the reactive power command value Qref in step 12-5, the process of setting Qref in the control calculation process is performed in step 12-6.

Next, the operation of the eighth embodiment will be described. The reading 12-1 of the electric quantity e performs a process of reading the measured electric quantity e of the induction machine type wind turbine generator 2 from the electric quantity measuring device. The read data is then sent to the signal processing calculation 12-2 of the low-pass filter, and the signal processing calculation 12-2 of the low-pass filter performs signal processing to remove high frequency noise and the like contained in the electric quantity e to obtain the electric quantity e. Is converted into a signal e, a process 12-3 converts the electric quantity e into a signal e representing the electric quantity e. For example, the unit method (p.
Convert to the value expressed by u.).

Subsequently, the signal e is sent to the process 12-4 for converting the electric quantity e into the reactive power Q, and the signal e is converted into the signal Q representing the reactive power quantity. Processing to calculate reactive power command value 12-5
Is a command signal Qref of the reactive power to be output by the DC link type wind turbine generator, based on the signal Q representing the amount of reactive power.
To calculate.

For example, in order to compensate the delayed reactive power of the induction machine type wind power generator, the sign of the signal indicating the reactive power is inverted so that the DC link type wind power generator outputs the reactive power. There is a method of setting the power output command value Qref. Process 12-6 for setting Qref to control calculation process is 1
A process of setting the reactive power output command value Qref calculated in 2-5 to a predetermined data storage location of the control calculation process of the converter is performed.

In the AC / DC converter of the DC link type wind turbine generator, the control device works so as to output the reactive power according to the set Qref. As a result, reactive power according to the command value is output from the DC link type wind power generator, and the reactive power of the induction machine type wind power generator is compensated. The above processing is recorded on a recording medium such as the flexible magnetic disk 11. As the recording medium, all those capable of recording electronic information, such as MO, hard disk, magnetic tape, flash memory, etc., are targeted.

According to the present embodiment, the configuration of the wind turbine generator and its controller are stabilized by the reactive power of the induction machine type wind turbine generator being compensated by the reactive power of the DC link wind turbine generator. Provide a medium on which information and programs are recorded, which can be operated and can eliminate the installation of a parallel capacitor, which is the main cause of the self-excitation phenomenon, and can function as a means to eliminate the continuous generation of generator voltage during standalone operation. be able to.

(Ninth Embodiment) FIG. 15 is a diagram showing an embodiment of a medium on which information and a program according to the ninth embodiment of the present invention are recorded. In the figure, the same information and processing programs as in FIG. 14 already described are assigned the same reference numerals and explanations thereof will be omitted. In FIG. 15, 12
-7 is the reactive power command value Qref so that the reactive power Q becomes zero.
Is a process for calculating.

Next, the operation of the ninth embodiment will be described. The information of step 12-1 to step 12-4 and the operation of the processing program are the same as those in FIG. Reactive power command value Q so that reactive power Q becomes zero
In the processing step 12-7 for calculating ref, the command signal Qref of the reactive power to be output by the DC-link wind turbine generator 6 is output.
To calculate.

In the present embodiment, as shown in FIG. 5, the delayed reactive power of the induction machine type wind turbine generator 2 is compensated by the leading reactive power output from the DC link type wind turbine generator 6, thus providing induction. Reactive power output so that the total reactive power of the machine type wind turbine generator 2 and the DC link type wind turbine generator 6, that is, the reactive power that appears at the interconnection point when the entire wind turbine generator is viewed from the AC system 1 becomes zero. The command signal Qref is determined.

The subsequent operation is the same as the eighth operation. The above processing is recorded on a recording medium such as the flexible magnetic disk 11. As the recording medium, all those capable of recording electronic information, such as MOs, hard disks, magnetic tapes, DVDs, flash memories, etc., are targeted.

According to the present embodiment, the reactive power consumed by the induction machine type wind turbine generator 2 is compensated by the reactive power of the DC link type wind turbine generator 6 in the configuration of the wind turbine generator and its control device. A medium on which information and a program are recorded, which enables stable operation, eliminates the installation of a parallel capacitor, which is the main cause of the self-excitation phenomenon, and functions as a means to eliminate the continuous generation of generator voltage during islanding. Can be provided.

(Tenth Embodiment) FIG. 16 is a diagram showing an embodiment of a medium on which information and programs according to the tenth embodiment of the present invention are recorded. In the figure, the elements having the same functions as those in FIGS. 14 and 15 which have already been described are designated by the same reference numerals, and the description thereof will be omitted.

FIG. 16 shows a processing program in a system configuration including n induction machine type wind turbine generators 2 and m DC link type wind turbine generators 6. In step 12-8, the reactive power command value Qref is set to the wind power generator 1 to 1.
Step 12
-9 performs a process of setting Qrefi to the control calculation process of the wind turbine generator i. And 12-10 shows the information (data) which shows the operating state of the wind power generators 1-m.

Next, the operation of the tenth embodiment will be described. The information of 12-1 to 12-4 and 12-7 and the operation of the processing program are the same as those in FIGS.

In the process of 12-8, the reactive power command value Qref obtained in the process of 12-7 is set to 1 according to the operating state of the m DC link type wind turbine generators 6 indicated by 12-10. .About.m are distributed to the command values Qref1 to Qrefm of the reactive power to be output by the DC link type wind turbine generator 6. At this time, Qref = Qref1 +
Qref2 + ... + Qrefm is established. The processing of 12-9 is i
To the control calculation process of the th DC-link type wind turbine generator 6 Q
Set refi.

In this embodiment, the total delayed reactive power of the n induction machine type wind turbine generators 2 is compensated by the total lead reactive power output from the m DC link type wind turbine generators 6. Therefore, n induction machine type wind turbine generators 2 and m
The total reactive power of the DC link type wind turbine generators 6, that is, the reactive power appearing at the interconnection point when the entire wind turbine generator is viewed from the AC system 1 functions to be zero.

The above process is applied to the flexible magnetic disk 1.
It is recorded on a recording medium such as 1. As a recording medium, MO,
It covers all things that can record electronic information, such as hard disks, magnetic tapes, DVDs, and flash memories.

According to the present embodiment, the configuration of the wind turbine generator and its controller are the same as those of the DC link wind turbine generator in which the total reactive power consumed by the n induction wind turbine generators is m. Information that allows stable operation by being compensated by the total reactive power, omitting the installation of a parallel capacitor that is the main cause of the self-excitation phenomenon, and acting as a means to eliminate the continuous generation of generator voltage during islanding It is possible to provide a medium in which the program is recorded.

[0095]

As described above, according to the first embodiment of the present invention, the reactive power consumed by the induction machine type wind turbine generator is compensated by the reactive power of the DC link type wind turbine generator. (EN) Provided is a wind turbine generator configuration and its control device that can be operated stably and the installation of a parallel capacitor, which is the main cause of the self-excitation phenomenon, can be omitted. be able to.

According to the second embodiment of the present invention, the reactive power consumed by the induction machine type wind turbine generator is compensated by the reactive power of the DC link type wind turbine generator according to the present embodiment. (EN) Provided is a wind turbine generator configuration and its control device that can be operated stably and the installation of a parallel capacitor, which is the main cause of the self-excitation phenomenon, can be omitted. be able to.

According to the third embodiment of the present invention, the total reactive power consumed by the n induction machine type wind turbine generators is:
Compensated by the total reactive power of m DC-link type wind power generators, stable operation is possible, and the installation of parallel capacitors, which is the main cause of the self-excitation phenomenon, can be omitted. It is possible to provide a configuration of a wind turbine generator and a control device for the wind turbine generator that can eliminate the occurrence of the occurrence.

According to the fourth embodiment of the present invention, the reactive power consumed by the induction machine type wind turbine generator is compensated by the reactive power of the DC link type wind turbine generator, which enables stable operation and self-excitation phenomenon. Since the installation of the parallel capacitor, which is the main cause of this, can be omitted, it is possible to eliminate the continuous generation of generator voltage during independent operation, and to enable / disable the DC link type wind power generator even if the air volume changes. It is possible to provide a configuration of a wind turbine generator capable of maintaining a constant power output and a control device therefor.

According to the fifth embodiment of the present invention, the reactive power consumed by the induction machine type wind power generation device is the total reactive power of the parallel capacitor and the DC link type wind power generation device of a capacity such that the self-excitation phenomenon does not occur. Configuration of wind power generator capable of being stably operated by being compensated by electric power, reducing the rated capacity of the DC link type wind power generator, and eliminating continuous generation of generator voltage during independent operation, and its control device. Can be provided.

According to the sixth embodiment of the present invention, the reactive power consumed by the induction machine type wind turbine generator is compensated by the reactive power of the DC link type wind turbine generator, so that stable operation is possible, and the self-excitation phenomenon. Since the installation of the parallel capacitor, which is the main cause of this, can be omitted, it is possible to eliminate the continuous generation of generator voltage during independent operation, and to enable / disable the DC link type wind power generator even if the air volume changes. It is possible to provide a configuration of a wind turbine generator capable of maintaining a constant power output and a control device therefor. Further, since the same voltage measuring device as that used in the converter control system can be applied, the number of measuring devices can be reduced.

According to the seventh embodiment of the present invention, the reactive power consumed by the induction machine type wind turbine generator is compensated by the reactive power of the DC link type wind turbine generator, which enables stable operation and self-excitation phenomenon. Since the installation of the parallel capacitor, which is the main cause of this, can be omitted, it is possible to eliminate the continuous generation of generator voltage during independent operation, and to enable / disable the DC link type wind power generator even if the air volume changes. It is possible to provide a configuration of a wind turbine generator capable of maintaining a constant power output and a control device therefor. Further, since the same voltage measuring device as that used in the converter control system can be applied, the number of measuring devices can be reduced.

According to the eighth embodiment of the present invention, the configuration of the wind turbine generator and its controller are compensated for the reactive power consumed by the induction machine type wind turbine generator by the reactive power of the DC link wind turbine generator. Information and programs were recorded to enable stable operation, eliminate the installation of parallel capacitors, which is the main cause of the self-excitation phenomenon, and eliminate the continuous generation of generator voltage during standalone operation. A medium can be provided.

According to the ninth embodiment of the present invention, the configuration of the wind turbine generator and its controller are compensated for the reactive power consumed by the induction machine type wind turbine generator by the reactive power of the DC link wind turbine generator. Information and programs were recorded to enable stable operation, eliminate the installation of parallel capacitors, which is the main cause of the self-excitation phenomenon, and eliminate the continuous generation of generator voltage during standalone operation. A medium can be provided.

According to the tenth embodiment of the present invention, the configuration of the wind turbine generator and its controller are the DC link type in which the total reactive power consumed by the n induction machine type wind turbine generators is m. A means that can be stably operated by being compensated by the reactive power of the entire wind power generator, the installation of a parallel capacitor, which is the main cause of the self-excitation phenomenon, can be omitted, and that the generator voltage can be sustained and generated during independent operation It is possible to provide a medium on which information and a program for functioning as are recorded.

[Brief description of drawings]

FIG. 1 is a diagram showing a wind power generation facility according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a configuration of an electric quantity detecting means 7a in FIG.

FIG. 3 is a diagram showing a configuration of reactive power adjustment control means 7b in FIG.

FIG. 4 is a diagram showing a configuration of a converter control system 7c shown in FIG.

FIG. 5 is a diagram showing a wind power generation facility according to a second embodiment of the present invention.

FIG. 6 is a diagram showing wind power generation equipment according to a third embodiment of the present invention.

FIG. 7 is a diagram showing wind power generation equipment according to a fourth embodiment of the present invention.

FIG. 8 is a diagram showing wind power generation equipment according to a fifth embodiment of the present invention.

FIG. 9 is a diagram showing wind power generation equipment according to a sixth embodiment of the present invention.

10 is a diagram showing a configuration of reactive power detection means 7d in FIG.

11 is a diagram showing the configuration of reactive power adjustment control means 7b of FIG.

FIG. 12 is a diagram showing wind power generation equipment according to a seventh embodiment of the present invention.

13 is a diagram showing a configuration of a reactive current detection means 7e in FIG.

FIG. 14 is a diagram showing a program and a recording medium used in the wind power generation facility according to the eighth embodiment of the present invention.

FIG. 15 is a diagram showing a program and a recording medium used in the wind power generation facility according to the ninth embodiment of the present invention.

FIG. 16 is a diagram showing a program and a recording medium used in the wind power generation facility according to the tenth embodiment of the present invention.

FIG. 17 is a diagram showing a conventional induction machine type wind power generation facility.

FIG. 18 is a diagram showing a state of residual voltage of a conventional induction machine type wind power generation facility.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Electric power system, 2 ... Induction machine type wind power generator (1st wind power generator), 2a ... Induction generator, 2b, 6b ... Wind turbine, 3 ... Busbar, 4 ... Breaker, 5 ... Parallel condenser,
6 ... DC link type wind power generator (second wind power generator), 6a ... Synchronous generator or induction generator, 6c ... AC / DC converter (converter), 6d ... AC / DC converter (inverter), 6e ... DC capacitor, 6f ... Electric power storage device (battery), 7 ... Wind power generator control device, 7a ... Electric quantity detection means, 7a-1, 7d-1, 7e-1, ... Low pass filter, 7a-2 ... Electric quantity conversion unit, 7b … Reactive power adjustment control,
7b-1 ... Reactive power conversion section, 7b-2 ... Reactive power command value calculation section, 7c ... Converter control system, 7c-1 ... Output reactive power calculation circuit, 7c-2 ... Output reactive power constant control circuit, 7c- 3 ... Output active power calculation circuit, 7c-4 ... Output active power constant control circuit, 7c-5, 7c-6 ... Subtractor, 7c-7 ... Output power limiting circuit, 7c-8 ... AC current tracking control circuit, 7c -9 ... Phase detection circuit, 7c-10 ... PWM control circuit, 7c-11 ... Firing pulse generation circuit, 7d ... Reactive power detection means, 7d-2 ... Reactive power calculation section, 7e ... Reactive current detection means, 7e- 2 ... Reactive current calculation unit, 7f ... Reactive power adjustment amount distribution means, 8 ... Electric quantity measuring device, 9 ... Voltage measuring device, 10 ... Current measuring device, 11 ... Flexible magnetic disk, 12 ... Information and program.

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 3H078 AA02 AA26 BB01 CC01 CC73                 5G066 FA01 FB13 HB04                 5H590 AA08 AB01 BB01 CA14 CC08                       CD01 CD03 CE01 DD67 EA14                       EB02 EB14 EB15 EB21 FA08                       FB02 GA02 GA06 HA02 HA04                       HA06 HA07 HA09 HB02 HB03                       JA19

Claims (13)

[Claims] 1. A first generator which converts wind energy into a rotational force through a wind turbine and which is driven by the rotational force, and which directly supplies the output of the generator to an AC system.
The wind power generator of the above and the wind energy is converted into rotational force via the wind turbine, and the generator driven by this rotational force and the output of this generator are once converted into direct current and then converted into alternating current again. A second wind power generator provided with an AC-DC converter circuit for supplying to an AC system, and reactive power necessary for operating the first wind power generator is converted into reactive power generated by the second wind power generator. In order to compensate for this, a wind power generation facility including a control device that outputs a reactive power command signal to the AC / DC converter circuit of the second wind power generation device. 2. The generator of the first wind power generator is an induction generator, and the generator of the second wind power generator is an induction generator or a synchronous generator. The wind power generation facility according to Item 1. 3. An electricity quantity detecting means for detecting an electricity quantity of the first wind turbine generator, and a reactive unit for adjusting a reactive power output of the second wind turbine generator based on the detected electricity quantity. The wind power generation facility according to claim 1, wherein the control device is configured by power adjustment control means. 4. A quantity of electricity detecting means for detecting a total quantity of electricity of the first wind turbine generator and the second wind turbine generator, and based on the quantity of electricity detected by the electricity quantity detector. The wind power generation facility according to claim 3, further comprising reactive power adjustment control means for adjusting the reactive power output of the second wind power generator. 5. A plurality of first wind turbines, each of which includes a generator that converts wind energy into a rotational force through a wind turbine and is driven by the rotational force, and that directly supplies an output of the generator to an AC system. Power generator and wind energy is converted to rotational force via a wind turbine, and a generator driven by this rotational force, and the output of this generator is once converted to direct current and then converted to alternating current to form an alternating current system. A plurality of second wind power generators each including an AC / DC converting circuit that supplies the reactive power required to operate the plurality of first wind power generators is generated by the operation of the plurality of second wind power generators. And a controller for outputting a reactive power command signal to the AC / DC converter circuit of the second wind turbine generator in order to compensate for the reactive power. Wind turbine total power A quantity of electricity detecting means for detecting a quantity of electricity, and a reactive quantity for calculating a total reactive power output adjustment quantity of the second wind turbine generators in operation of a plurality of units based on the quantity of electricity detected by the quantity of electricity detecting means A wind power generation facility comprising: a power adjustment control unit; and a reactive power adjustment amount distribution unit that distributes the reactive power adjustment amount as a control target value to the plurality of second wind power generators. 6. The wind power generation facility according to claim 1, wherein a power storage device is installed in a DC circuit of the AC / DC converter circuit of the second wind power generation device. 7. A parallel circuit in which reactive power consumed by the first wind turbine generator is supplied to the alternating current system and a capacitance is selected so that a self-excitation phenomenon does not occur in the first wind turbine generator. The wind power generation facility according to claim 1 or 5, wherein a condenser is installed. 8. The wind power generation facility according to claim 1, wherein the amount of electricity detected by the electricity amount detecting means is reactive power. 9. The wind power generation facility according to claim 5, wherein the quantity of electricity detected by said quantity of electricity detecting means is a reactive current component. 10. A first wind power generator that converts wind energy into rotational force via a wind turbine and includes a generator driven by this rotational force, and supplies the output of this generator directly to an AC system. , AC that converts wind energy into rotational force via a wind turbine and drives with this rotational force, and the output of this generator is once converted into direct current, then converted into alternating current and supplied to the alternating current system. A second wind power generation device including a conversion circuit, and a method for controlling a wind power generation facility in which the first and second wind power generation devices are controlled by a control device, comprising: Of the amount of electricity detected by detecting the amount of electricity, and based on the detected amount of electricity, reactive power adjustment control is performed to adjust the reactive power output of the second wind turbine generator, and control of the first wind turbine generator is performed. Essential A method of controlling wind power generation equipment, characterized in that necessary reactive power is compensated by reactive power generated by the second wind power generation device. 11. A first wind turbine generator, which comprises a generator that converts wind energy into a rotational force via a wind turbine and is driven by this rotational force, and that directly supplies the output of the generator to an AC system. , AC that converts wind energy into rotational force via a wind turbine and drives with this rotational force, and the output of this generator is once converted into direct current, then converted into alternating current and supplied to the alternating current system. A second wind power generator including a conversion circuit, and in order to compensate the reactive power required for the operation of the first wind power generator with the reactive power generated by the second wind power generator, A control device is configured with a computer system so as to output a reactive power command signal to the AC / DC converter circuit of the second wind power generation device, and the computer system is configured to detect the amount of electricity of the first wind power generation device. Wind power generation facility control for functioning as air quantity detection means, reactive power adjustment control means for adjusting the reactive power output of the second wind power generation device based on the quantity of electricity detected by this electricity quantity detection means A computer-readable recording medium recording a program. 12. A first wind power generator that converts wind energy into a rotational force via a wind turbine and includes a generator driven by this rotational force, and supplies the output of the generator directly to an AC system. , AC that converts wind energy into rotational force via a wind turbine and drives with this rotational force, and the output of this generator is once converted into direct current, then converted into alternating current and supplied to the alternating current system. A second wind power generator including a conversion circuit, and in order to compensate the reactive power required for the operation of the first wind power generator with the reactive power generated by the second wind power generator, A control device that outputs a reactive power command signal to the AC / DC converter circuit of the second wind power generation device is configured by a computer, and the computer is used to control the total electricity consumption of the first wind power generation device and the second wind power generation device. Check quantity A control program for functioning as an output electric quantity detecting means, and a reactive power adjustment control means for adjusting the reactive power output of the second wind power generator based on the electric quantity detected by the electric quantity detecting function. A computer-readable recording medium in which is recorded. 13. A first wind power generator, which comprises a generator that converts wind energy into a rotational force via a wind turbine and is driven by this rotational force, and that directly supplies the output of the generator to an AC system. , AC that converts wind energy into rotational force via a wind turbine and drives with this rotational force, and the output of this generator is once converted into direct current, then converted into alternating current and supplied to the alternating current system. A second wind power generator including a conversion circuit, and in order to compensate the reactive power required for the operation of the first wind power generator with the reactive power generated by the second wind power generator, A control device that outputs a reactive power command signal to the AC / DC converter circuit of the second wind power generation device is configured by a computer, and the computer detects the total amount of electricity when operating the plurality of first wind power generation devices. Electricity Detection means, reactive power adjustment control means for calculating a total reactive power output adjustment amount when a plurality of the second wind turbine generators are in operation, based on the amount of electricity detected by the electricity amount detection means, the second A computer-readable recording medium in which a control program of a wind power generation facility for functioning as a reactive power adjustment amount distribution means for distributing the reactive power adjustment amount as a control target value to a plurality of the wind power generation devices is recorded.