WO2012070115A1

WO2012070115A1 - Wind power generation device

Info

Publication number: WO2012070115A1
Application number: PCT/JP2010/070878
Authority: WO
Inventors: 茂玉木; 明彦安養寺
Original assignee: 横河電子機器株式会社
Priority date: 2010-11-24
Filing date: 2010-11-24
Publication date: 2012-05-31

Abstract

The purpose of the present invention is to improve the quality of an electric power generated by means of wind power generation by a more suitable means than conventional means. Provided is a wind power generation device comprising: a wind power generator which can generate an electric power utilizing wind power; a lift pump which can draw up a liquid utilizing the electric power generated by the wind power generator; a storage tank which can store the liquid drawn by the lift pump; and a hydroelectric power generator which can generate an electric power utilizing the liquid that falls from the storage tank.

Description

Wind power generator

The present invention relates to a wind turbine generator.

Currently, wind power generators that generate electricity using wind power, which is natural energy, are attracting attention due to problems such as an increase in greenhouse gas emissions and the depletion of fossil fuels. As a general structure, a wind turbine generator drives a generator by power generated by rotating a windmill attached to a tip portion of a column by wind power. Such a wind power generator does not require fuel for power generation, so it can reduce the amount of fossil fuel used, that is, reduce carbon dioxide emissions, and it is relatively simple in structure and easy to install. It has some features.

By the way, it is generally known that the quality of electric power generated by a wind power generator is poor when compared with electric power generated by thermal power generation or nuclear power generation. In other words, wind power generation equipment uses wind, which is a natural phenomenon, as a power source, and therefore power fluctuations are likely to occur. As a result, fluctuations in voltage amplitude, frequency, phase, waveform, etc., which are elements of power quality, are And larger than electricity such as nuclear power. Therefore, in the practical application of wind power generators, it is necessary to take some measures against such relatively low power quality. As a measure against this, the quality of storage batteries such as lithium ion storage batteries and NAS batteries (sodium sulfur batteries) is used. Compensation has been done.

However, lithium-ion batteries are uneasy in terms of securing the necessary supply volume because they require rare metals that depend on supply from overseas, and their life is relatively short. There is a problem that maintenance costs increase. On the other hand, NAS batteries have environmental problems when disposed of because they contain non-biodegradable materials that are not decomposed in the natural environment. Therefore, the conventional means for improving the quality of wind power generation has much room for improvement.

The present invention has been made in view of the above-described circumstances, and an object of the present invention is to improve the quality of wind-generated power with a quality-improving means that is more suitable than before.

In order to achieve the above object, in the present invention, as a first solution, a wind power generator that generates power using wind power, and a pump that pumps liquid using the power generated by the wind power generator, A configuration is adopted in which a storage tank that stores the liquid pumped up by the pump and a hydroelectric generator that generates power using the liquid falling from the storage tank is adopted.

Further, in the present invention, as the second solution means, in the first solution means described above, a second storage tank for storing the liquid discharged from the hydroelectric generator after use of power generation is provided. A configuration is adopted in which the liquid stored in the storage tank is pumped up.

In the present invention, as a third solution, in the first or second solution, the wind power generator includes a support, a generator fixed to the upper end of the support, and a drive shaft of the generator. And a wind pump fixed to the pump, and a structure in which a pump, a storage tank, a hydroelectric generator, and a second storage tank are accommodated in the support column is adopted.

According to the present invention, the wind pump, which is a natural phenomenon, is used as a power source, and the power of the wind power generator (low quality power) having a relatively poor power quality is used to drive the pump to pump the liquid into the storage tank. By using the kinetic energy of the liquid falling from the storage tank, a relatively high quality hydroelectric power (high quality power) is obtained. That is, in this invention, the low quality electric power which the wind power generator generated based on the combination of a pump, a storage tank, and a hydroelectric generator is converted into high quality electric power. The means for improving the quality of electric power comprising such a pump, storage tank and hydroelectric generator does not include at least the rare metal, life or environmental problems in the above-described lithium ion storage battery and NAS battery. It is a suitable quality improvement means.

It is a lineblock diagram of wind power generator A concerning a 1st embodiment of the present invention. It is a block diagram of the wind power generator B which concerns on 2nd Embodiment of this invention. It is a block diagram of the wind power generator C which concerns on 3rd Embodiment of this invention.

Embodiments of the present invention will be described below with reference to the drawings.
[First embodiment]
First, the first embodiment will be described. As shown in FIG. 1, the wind power generator A according to the first embodiment includes a wind power generator 1, a pumping pump 2, a storage tank 3, and a hydraulic power generator 4.

As shown in FIG. 1, the wind power generator 1 is erected on the water such as the sea, a lake, and a river, and is composed of a support 1a, a power generator 1b, and a windmill 1c. The column 1a is a fixed structure that is erected from a water bottom to a predetermined height above the water. In addition, as a method of providing the column 1a, not only such a fixed structure but also an optimum one may be adopted as appropriate according to the installation location of the sea, lake, river or the like. For example, in the case where the wind power generator 1 is provided on the sea, the wind power generator 1 may be movable by standing a support 1a on the floating structure and towing the floating structure with a ship as necessary.

The generator 1b is fixed to the upper end portion of such a column 1a. The windmill 1c is fixed to the drive shaft of the generator 1b, and is, for example, a propeller type having three blades as illustrated. The generator 1b is provided on the support 1a so that the drive shaft is in a horizontal posture, and the windmill 1c that is axially coupled to the generator 1b rotates with a vertical plane as a rotation plane. That is, such a wind power generator 1 receives the force of the wind blowing in the horizontal direction by the windmill 1c, and drives the generator 1b with the power (rotational force) generated in the windmill 1c to generate wind power generation power. It is.

Here, the wind power generated by the wind power generator 1 is compared with the power of hydroelectric power generation, thermal power generation, or nuclear power generation in which the power quality is already widely used because the wind, which is a natural phenomenon, is used as a power source. If the quality (power quality) is bad. In other words, wind power generation has relatively large variations in voltage amplitude, frequency, phase, waveform, etc., which are elements of power quality, and in some cases does not satisfy the allowable values officially declared as power quality, It is necessary to compensate the power quality by means of quality improvement.

A speed increaser (not shown) is provided between the windmill 1c and the generator 1b. This speed increaser speeds up the rotation of the windmill 1c and transmits it to the generator 1b. Moreover, the windmill 1c is not limited to a horizontal axis propeller type. It is conceivable that the windmill 1c may take various forms such as a Darius type, a gyromill type, or a Savonius type with a vertical axis depending on the nature of the wind at the place where the wind power generator 1 is installed. What is necessary is just to use the generator 1b corresponding to the form of such a windmill 1c. Furthermore, the number of blades in the propeller-type windmill 1c is not limited to the above three.

The wind power generator 1 configured in this manner supplies wind power to the pumping pump 2.
The pump 2 pumps the water (seawater or fresh water) from the water using the wind power generated from the wind power generator 1 and supplies it to the storage tank 3. That is, as shown in the figure, the pump 2 is provided in the middle of a pipe where one end is buried in the water and the other end communicates with the storage tank 3. To discharge. Although it is conceivable to employ a spiral pump or a diffuser pump as the pumping pump 2, it is not limited to these types of pumps.

As shown in the figure, the storage tank 3 is fixedly installed at a certain height from the water surface, stores the water supplied from the pumping pump 2, and discharges the stored water toward the hydroelectric generator 4. The container. Such a storage tank 3 is fixed to a predetermined height position of the column 1a via a fixing member, but may be installed on a structure provided separately from the column 1a. Note that the capacity of the storage tank 3 is determined in consideration of the duration of the function as a power buffer.

The hydroelectric generator 4 uses the water falling from the storage tank 3 to generate power by rotating a power generation turbine at a high speed and outputs the electric power to the outside. That is, this hydroelectric generator 4 is provided in the middle part of the pipe that has one end connected to the bottom of the storage tank 3 and the other end opened to the water, and receives the water flowing down in the pipe by the turbine. It is a device that generates generated power. The hydroelectric power output from the hydroelectric generator 4 to the outside has extremely high quality power (high quality power) compared to the wind power generated above, that is, fluctuations in voltage amplitude, frequency, phase, waveform, etc. are extremely high. There are few things.
Such a hydroelectric generator 4 constitutes, together with the above-described pumping pump 2 and the storage tank 3, a quality improving means for improving the quality of the wind power generation.

Next, the operation of the wind power generator A having the above configuration will be described.
First, the wind power generator 1 drives the power generator 1b by rotating the windmill 1c by wind power. As a result, the wind power generator 1 supplies wind power to the pumping pump 2 from the power generator 1b. Then, the pump 2 pumps water from the water using this wind power generation as a power source and supplies it to the storage tank 3. Here, although the wind power generation power is low quality power, the function required of the pumping pump 2 in the wind power generator A is simply to supply water to the storage tank 3, and the low quality power is used as the power source. There is no problem with doing.

In the initial operation of the wind turbine generator A, when a certain amount of water has accumulated in the storage tank 3, the water stored in the storage tank 3 is supplied to the hydroelectric generator 4 to start hydroelectric power generation. That is, the water accumulated in the storage tank 3 gradually falls from the bottom of the storage tank 3 and drives the hydroelectric generator 4 to generate hydroelectric power.

According to this wind power generator A, wind power (low quality power) generated by the wind power generator 1 is finally converted into hydro power (high quality power) and output to the outside. In addition, after the wind power generator A starts operating, even if the wind temporarily stops and the wind power generator 1 stops generating power, the storage tank 3 that stores a predetermined amount of water functions as an electric power buffer. Power generation by the generator 4 is continued. Therefore, according to this wind power generator A, hydroelectric power generation is continued even if the wind power generation is stopped for a certain period of time, so that it is possible to continuously supply hydroelectric power (high quality power) to the outside.

Moreover, according to this wind power generator A, since the quality improvement means for improving the quality of wind power generation is comprised by the pumping pump 2, the storage tank 3, and the hydroelectric generator 4, the conventional lithium ion storage battery Compared with high quality means using a storage battery such as a NAS battery or the like, the rare metal, life or environmental problems are eliminated or significantly reduced. That is, the pump 2, the storage tank 3 and the hydroelectric generator 4 do not require any rare metal, and are sufficiently longer than the storage battery in terms of life, and in the environment like the storage battery when discarded. Since it does not give a significant load, it is a higher quality means more suitable than a storage battery.

[Second Embodiment]
Next, a second embodiment will be described. The wind power generator B according to the second embodiment is different from the wind power generator A of the first embodiment in that the second storage tank 5 is provided. Therefore, in the wind power generator B, the same reference numerals are given to the same functional components as those of the wind power generator A of the first embodiment.
As shown in FIG. 2, the wind power generator B includes a wind power generator 1, a pumping pump 2, a storage tank 3, a hydroelectric generator 4, and a second storage tank 5.

As shown in FIG. 2, the wind power generator 1 is erected on the ground unlike the first embodiment, and includes a support 1a, a power generator 1b, and a windmill 1c. The column 1a is a fixed structure with a predetermined height that is erected on the ground. The generator 1b is fixed to the upper end portion of such a column 1a. The windmill 1c is fixed to the drive shaft of the generator 1b, and is, for example, a propeller type having three blades as illustrated. Similar to the first embodiment, such a wind power generator 1 receives the force of the wind blowing in the horizontal direction by the windmill 1c, and drives the generator 1b by the power (rotational force) generated in the windmill 1c. Generate wind power.

Here, the wind power generated by the wind power generator 1 has relatively large fluctuations in voltage amplitude, frequency, phase, waveform, and the like, which are elements of power quality. It is unsatisfactory, and it is necessary to compensate the power quality by some kind of quality improvement means.

As in the first embodiment, a speed increaser (not shown) is provided between the windmill 1c and the generator 1b described above. Moreover, the windmill 1c is not limited to a horizontal axis propeller type. It is conceivable that the windmill 1c may take various forms such as a Darius type, a gyromill type, or a Savonius type with a vertical axis depending on the nature of the wind at the place where the wind power generator 1 is installed. What is necessary is just to use the generator 1b corresponding to the form of such a windmill 1c. Furthermore, the number of blades in the propeller-type windmill 1c is not limited to the above three.

The wind power generator 1 configured in this manner supplies wind power to the pumping pump 2.
The pump 2 pumps water from the second storage tank 5 using the wind power generated from the wind power generator 1 and supplies it to the storage tank 3. That is, as shown in the figure, the pump 2 is connected to the bottom of the second storage tank 5 and the other end is provided in the middle of the pipe communicating with the storage tank 3. The water in the two storage tanks 5 is sucked up and discharged into the storage tank 3. Although it is conceivable to employ a spiral pump or a diffuser pump as the pumping pump 2, it is not limited to these types of pumps.

As shown in the figure, the storage tank 3 is fixedly installed at a certain height above the ground on a structure provided separately from the support column 1a, stores the water supplied from the pumping pump 2, and stores the stored water. Is a container of a predetermined capacity that discharges toward the hydroelectric generator 4. Such a storage tank 3 is fixed at a predetermined height position on the structure, but may be fixed to the column 1a via a fixing member as in the first embodiment. Note that the capacity of the storage tank 3 is determined in consideration of the duration of the function as a power buffer.

The hydroelectric generator 4 uses the water falling from the storage tank 3 to rotate the power generation turbine at a high speed to generate electric power, and outputs the electric power to the outside. Discharge towards That is, the hydroelectric generator 4 has one end connected to the bottom of the storage tank 3 and the other end provided in the middle of the pipe communicating with the second storage tank 5. It is a device that receives hydroelectric power generated by a turbine. The hydroelectric power output from the hydroelectric generator 4 to the outside is extremely high quality power (high quality power) compared to the wind power generated above, that is, fluctuations in voltage amplitude, frequency, phase, waveform, etc. are extremely high. There are few things.

As shown in the figure, the second storage tank 5 is fixedly installed on the ground, stores water discharged from the hydroelectric generator 4 after power generation, and sucks the stored water into the pumping pump 2 through a pipe. A container having a predetermined capacity. The capacity of the second storage tank 5 is determined in consideration of the capacity of the storage tank 3. In addition, the 2nd storage tank 5 comprises the quality improvement means for improving the quality of wind power generation with the pumping pump 2, the storage tank 3, and the hydroelectric generator 4 mentioned above.

Next, the operation of the wind turbine generator B configured as described above will be described.
First, the wind power generator 1 drives the power generator 1b by rotating the windmill 1c by wind power. As a result, the wind power generator 1 supplies wind power to the pumping pump 2 from the power generator 1b. Then, the pump 2 pumps water from the second storage tank 5 and supplies it to the storage tank 3 using this wind power generation power as a power source. Here, although the wind power generation power is low quality power, the function required for the pumping pump 2 in this wind power generation apparatus B is simply to supply water to the storage tank 3, and the low quality power is used as the power source. There is no problem with doing.

In the initial operation of the wind turbine generator B, when a certain amount of water has accumulated in the storage tank 3, the water stored in the storage tank 3 is supplied to the hydroelectric generator 4 to start hydroelectric power generation. That is, the water accumulated in the storage tank 3 gradually falls from the bottom of the storage tank 3 and drives the hydroelectric generator 4 to generate hydroelectric power. The hydroelectric generator 4 discharges water to the second storage tank 5 after using the power generation. Thus, in the wind power generator B, water is circulated to cause the hydroelectric generator 4 to generate power.

According to the wind power generator B as described above, as in the first embodiment, the high-quality electric power can be supplied, and the pumping pump 2, the storage tank 3, and the hydroelectric generator 4 constituting the quality-improving means are all provided. , It does not require rare metals, and is sufficiently longer than storage batteries in terms of life, and even when discarded, it does not give a significant load on the environment like storage batteries. Means can be provided. Moreover, since this wind power generator B circulates the water stored in the second storage tank 5 and causes the hydroelectric generator 4 to generate power, it is not a place where there is abundant water such as a sea, a lake, or a river. Even can be installed.

[Third Embodiment]
Furthermore, a third embodiment will be described. As shown in FIG. 3, the wind turbine generator C according to the third embodiment accommodates a pumping pump 2, a storage tank 3, a hydroelectric generator 4, and a second storage tank 5 in a column 1 a of the wind power generator 1. In the point which does, it differs from the wind power generator B of the said 2nd Embodiment, and another structure and operation | movement are the same.
According to such a wind turbine generator C, in addition to the effects of the second embodiment described above, a space for installing the pumping pump 2, the storage tank 3, the hydroelectric generator 4, and the second storage tank 5 becomes unnecessary. Therefore, space saving can be realized.

A, B, C Wind turbine generator 1 Wind generator 2 Pumping pump 3 Storage tank 4 Hydroelectric generator 5 Second storage tank

Claims

A wind power generator that uses wind power,
A pump for pumping liquid using the electric power generated by the wind power generator;
A storage tank for storing the liquid pumped up by the pump;
A wind turbine generator comprising: a hydroelectric generator that generates electric power using the liquid falling from the storage tank.
Comprising a second storage tank for storing the liquid discharged from the hydroelectric generator after power generation,
The wind pump according to claim 1, wherein the pump is configured to pump up the liquid stored in the second storage tank.
The wind power generator is composed of a support, a generator fixed to the upper end of the support, and a windmill fixed to a drive shaft of the generator,
The wind power generator according to claim 2, wherein the pump, the storage tank, the hydroelectric generator, and the second storage tank are accommodated in the support column.