JPH0720100U - Wind power system - Google Patents

Abstract

(57) [Summary] [Purpose] A vertical axis wind turbine is installed inside the transmission tower to increase safety and reduce construction costs. [Structure] A rotating shaft 2 is vertically supported in an inner space of a power transmission tower 1, and vertical shaft type wind turbines 3 to 6 are attached to the rotating shaft 2. A generator 8 is connected to the lower end of the rotary shaft 2 via a rotation switching device 7. The generator 8 is driven by the rotational driving force generated in the wind turbines 3 to 6. The electric power generated by the generator 8 is sent to the load 11 via the switch 9. Load 1
The remaining power consumed by 1 is sent to the voltage regulator 12.
The voltage regulator 12 converts the voltage of the input power to convert the storage battery 13
Send to. The storage battery 13 supplies DC to the DC device 14 and the converter 15. When the switch 9 is switched by the relay 17, the electric power from the generator 8 is boosted to a predetermined voltage by the transformer 18 and sent to the overhead ground wire 21 of the power transmission tower 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a wind power generation system installed in a power transmission tower.

[0002]

[Prior art]

 In the conventional wind power generation system, as shown in FIGS. 8 and 9, a horizontal shaft type wind turbine 32 is mounted on a dedicated steel tower 31, and a generator 33 is connected to the rotating shaft of the wind turbine 32 to generate electric power. Is common. Note that FIG. 8 shows a case where the generated power is sent to the power grid via the power backflow prevention device 34 and directly used. In addition, in FIG. 9, in addition to supplying electric power to the load 35, surplus electric power is sent to the storage battery 37 via the voltage regulator 36 for storage in a windless time zone, and the converter 38 connected to the storage battery 37 is connected to the storage battery 37. The case of converting DC from AC to AC and sending it to another load is shown.

[0003]

[Problems to be solved by the device]

 However, the conventional wind power generation system has a problem in that it requires construction of a dedicated steel tower and secures a site to increase the construction cost. In addition, when a horizontal axis wind turbine is used, the wind turbine is exposed and there is a problem in that it lacks safety. The present invention has been made to solve the above problems, and an object thereof is to provide a wind power generation system which can be installed without constructing a dedicated steel tower and has safety. .

[0004]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a vertical axis wind turbine housed and installed in an empty space inside a transmission tower, a generator driven by a rotary shaft of the vertical axis wind turbine, and a vertical axis wind turbine. A clutch / brake device installed between the rotating shaft and the generator, and a switch that switches the destination of the power output from the generator to either peripheral load equipment or the overhead ground wire of the transmission tower. It is characterized by having.

[0005]

[Action]

 In the present invention, since the vertical axis wind turbine is stored and installed in the empty space inside the transmission tower, a dedicated tower is unnecessary. In addition, the vertical axis type wind turbine makes yaw control unnecessary. Since the clutch / brake device is installed between the rotating shaft of the vertical-axis wind turbine and the generator, the wind turbine and generator can be idle or stopped. The destination of the electric power generated by the generator can be switched to either the peripheral load equipment or the overhead ground wire of the transmission tower by transmitting a switch to transmit the electric power.

[0006]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an overall configuration diagram of a wind power generation system according to the present invention. In the figure, reference numeral 1 is a power transmission tower, and a rotating shaft 2 is vertically supported in an inner space of the power transmission tower 1. Vertical shaft type wind turbines 3 to 6 are mounted in the middle of the rotating shaft 2, and a rotation switching device 7 is connected to the lower end thereof. The rotational driving force generated in the wind turbines 3 to 6 is transmitted to the generator 8 via the rotary shaft 2 and the rotation switching device 7.

The electric power generated by the generator 8 is sent to the load 11 via the switch 9. The remaining power consumed by the load 11 is sent to the voltage regulator 12. The voltage regulator 12 converts the input power into a predetermined voltage and sends it to the storage battery 13 for storage. A direct current device 14 and a converter 15 are connected to the storage battery 13 and are supplied with direct current. The converter 15 converts the supplied direct current into alternating current and sends it to the alternating current device 16. Further, when the switching device 9 is switched by the relay 17 driven by the storage battery 13, the electric power from the generator 8 is sent to the transformer 18 to be boosted to a predetermined voltage, and then the overhead transmission line 1 is suspended. It is sent to the ground wire 21. The switch 9 may be of a manual type.

FIG. 2 is a cross-sectional view of the power transmission tower 1 of FIG. As shown, wind turbines 3 to 5 are fitted and fixed to the rotary shaft 2, and each wind turbine 3 to 5 is supported at its upper and lower positions by stays 23 to 26 each having a bearing 22. Has been done. The wind turbines 3 to 5 are smaller in size as the wind turbines installed above the wind turbines 3 to 5 are restricted due to the space limitation of the transmission tower 1. The lower end of the rotating shaft 2 is connected to a generator 8 via a rotation switching device 7 including a clutch and a brake. By operating the lever 27 of the rotation switching device 7, the rotating shaft 2 and the generator 8 can be connected, or the rotation of the rotating shaft 2 can be braked and stopped. Note that the rotation switching device 7 may be electrically operated and may be configured to be automatically switched according to a load state or a power generation state.

FIG. 3 is a perspective view of the wind turbine 3 of FIG. 2, and FIG. 4 is a perspective view of the wind turbine 3 fitted to the rotary shaft 2. 5 is a front view of the wind turbine 3, FIG. 6 is a right side view thereof, and FIG. 7 is a plan view of the same. As shown in the drawings, in the wind turbine 3, blades 3c to 3e that are radial and parallel to the axial direction are formed around a boss 3b having a shaft hole 3a into which the rotary shaft 2 is fitted. The tips of 3e are respectively curved backward in the rotation direction. When the wind turbine 3 formed in this way is hit by the wind in the lateral direction, that is, parallel to the radial direction, a unidirectional torque is generated from the blades 3c to 3e to the boss 3b.

The rotary shaft 2 is rotationally driven by this torque. The number of the blades 3c to 3e is not limited to three and can be set to any number, and the size and shape of the blades 3c to 3e can be arbitrarily changed according to the installation conditions of the system. It is possible . The wind power generation system of this embodiment can be constructed by incorporating a wind turbine at the same time when a new transmission tower is installed, or can be additionally installed after the existing transmission tower. The number of wind turbines installed can be arbitrarily determined within the allowable structural strength of the transmission tower. Similarly, if the wind turbine type is a vertical axis type, it is also possible to use another type, such as the Darrieus wind turbine.

According to this embodiment, since the wind turbines 3 to 6 are installed in the empty space inside the power transmission tower 1, it is unnecessary to newly construct a dedicated steel tower such as a conventional wind power generation system. At the same time, there is no need to secure a land, and construction costs will be significantly reduced. Further, since the wind turbines 3 to 6 are respectively housed inside the power transmission tower 1, the movable portion is not exposed and safety can be obtained. Moreover, since the generated electric power can be transmitted to a remote place using the overhead ground wire 21 of the transmission tower 1, the electric power can be transferred at low cost.

[0012]

[Effect of device]

 As described above, according to the present invention, since the vertical axis wind turbine is housed and installed in the empty space inside the transmission tower, the construction of a dedicated tower becomes unnecessary, and at the same time the site is not secured. The cost will be greatly reduced. In addition, since the vertical axis wind turbine is housed inside the transmission tower, the movable parts are not exposed and safety can be obtained. Furthermore, when transmitting generated power to a remote location, the overhead power line of the transmission tower is used, which reduces the cost of wind power generation equipment and promotes wind power utilization at the location of the transmission tower.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a wind power generation system according to the present invention.

FIG. 2 is a cross-sectional view of the power transmission tower of FIG.

3 is a perspective view of the vertical axis wind turbine of FIG. 2. FIG.

FIG. 4 is a perspective view of the vertical axis wind turbine of FIG. 3 fitted to a rotary shaft.

5 is a front view of the vertical axis wind turbine of FIG. 3. FIG.

FIG. 6 is a right side view of FIG.

FIG. 7 is a plan view of FIG.

FIG. 8 is an explanatory diagram showing a conventional example.

FIG. 9 is an explanatory diagram showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Transmission tower 2 Rotation shaft 3-6 Vertical axis wind turbine 3a Shaft hole 3b Boss 3c-3e Blade 7 Rotation switching device 8 Generator 9 Switcher 11 Load 12 Voltage regulator 13 Storage battery 14 DC equipment 15 Converter 16 AC equipment 17 Relay 18 Transformer 21 Overhead ground wire 22 Bearing 23-26 Stay 27 Lever

Claims (1)

[Scope of utility model registration request] 1. A vertical-axis wind turbine housed and installed in an empty space inside a power transmission tower, a generator driven by a rotary shaft of the vertical-axis wind turbine, and a rotary shaft of the vertical-axis wind turbine and a generator. A wind turbine characterized by comprising a clutch / brake device installed between them, and a switching device for switching the destination of the power output from the generator to either peripheral load equipment or an overhead ground wire of the transmission tower. Power generation system.