WO2006126863A1

WO2006126863A1 - Wind power generator

Info

Publication number: WO2006126863A1
Application number: PCT/KR2006/002027
Authority: WO
Inventors: Chan-Jae Lee
Original assignee: Chan-Jae Lee
Priority date: 2005-05-27
Filing date: 2006-05-26
Publication date: 2006-11-30
Also published as: KR100773115B1; KR20060122432A

Abstract

Disclosed herein is a wind power generator. The wind power generator includes a plurality of support poles which are set up to be spaced apart from each other by a predetermined distance, at least one aerial support wire connected between the support poles, a plurality of fans which are arranged in a row along and supported by the aerial support wire, and rotated by wind, and a power generating unit generating electricity, using rotating force transmitted from the plurality of fans. The wind power generator of this invention reduces initial investment, and generates a large amount of power, thus increasing economic efficiency.

Description

WIND POWER GENERATOR

Technical Field

[1] The present invention relates, in general, to wind power generators and, more particularly, to a wind power generator, which is constructed so that aerial support wires are connected to two support poles, and several fans supported by the aerial support wires are installed in a row, thus reducing installation costs, and producing a large amount of electricity, therefore enhancing economic efficiency. Background Art

[2] Generally, a wind power generator is a power generating device that rotates fans using the force of natural wind, and increases the rotational speed produced by the fans using a gear mechanism, thus operating a power generating unit.

[3] Such a wind power generator is environment-friendly power generating equipment.

However, the initial investment for the power generating equipment is large, so it takes a long time to recover the investment, and thus economic efficiency is low. For these reasons, wind power generators are not widely used compared to other power generating equipment.

[4] The reason why the economic efficiency of the conventional wind power generator is low is because the installation cost of a structure for supporting each fan and the power generating unit is high, and a respective power generating unit is mounted to each fan. For these reasons, the installation cost is high, and maintenance and repair costs are also high.

[5] However, recently, fossil fuels are being exhausted, and concern over pollution of the earth's environment is gradually increasing. Thereby, research into wind power generating equipment, which uses natural wind, has increased. Further, a wind power generator which requires a low initial investment and is capable of generating a large amount of power is in demand. Disclosure of Invention

Technical Problem

[6] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a wind power generator, which is constructed so that a plurality of fans is mounted to an aerial support wire connecting two support poles to each other, thus reducing the initial investment, and generating a large amount of power, therefore enhancing economic efficiency. Technical Solution [7] In order to accomplish the object, the present invention provides a wind power generator, including a plurality of support poles set up to be spaced apart from each other by a predetermined distance; at least one aerial support wire connected between the support poles; a plurality of fans arranged in a row along and supported by the aerial support wire, and rotated by wind; and a power generating unit generating electricity, using rotating force transmitted from the plurality of fans.

[8] According to the first characteristics of the invention, the aerial support wire comprises a linear member and is supported at opposite ends thereof by the support poles, and each of the fans and the power generating unit form one set, the set being installed on the aerial support wire to generate electricity.

[9] A power line is connected between the support poles, and is connected to the power generating unit to deliver power to an outside.

[10] The fans are installed such that two adjacent fans are oriented in opposite directions, thus offsetting rotation torques.

[11] The aerial support wire comprises a plurality of linear members which are coupled to each other using joints.

[12] The wind power generator further includes a lightning conducting wire connected between the support poles to protect the wind power generator from lightning.

[13] According to the second characteristics of the invention, the wind power generator further includes a rotating shaft provided parallel to the aerial support wire and rotating along with the fans, the rotating shaft being connected to the aerial support wire via a shaft support wire.

[14] The power generating unit is provided on at least one side of the rotating shaft, and generates electricity as the rotating shaft rotates.

[15] The rotating shaft comprises a plurality of shafts, the shafts being coupled to each other using universal joints.

[16] The wind power generator further includes a lightning conducting wire connected between the support poles to protect the wind power generator from lightning.

[17] According to the third characteristics of the invention, the aerial support wire comprises a plurality of aerial support wires which are installed to be parallel to each other and to be located at upper and lower positions, and a fan support is installed between the aerial support wires to support each of the fans in a vertical direction.

[18] The fan support is provided with a bevel gear set that transmits rotating force generated by each of the fans in a perpendicular direction.

[19] A power transmission means is provided at a position around the fan support, and transmits power, generated by rotation of each of the fans, to the power generating unit.

[20] The power transmission means includes a hydraulic pump driven by each of the fans, and a hydraulic motor rotated by a hydraulic pressure generated from the hydraulic pump, thus driving the power generating unit.

[21] The wind power generator further includes a transmission which is provided between the hydraulic motor and the power generating unit and controls a rotating speed thereof.

[22] The wind power generator further includes a plurality of shutoff valves which is provided on a pipeline between the hydraulic pump and the hydraulic motor, thus opening or closing a path.

[23] A bypass line and a bypass valve are provided on the pipeline between the hydraulic pump and the hydraulic motor, thus allowing the path to be bypassed.

[24] An automatic pressure valve is provided on the pipeline between the hydraulic pump and the hydraulic motor.

[25] A lightning conducting wire is connected between the support poles to protect the wind power generator from lightning.

[26] According to the fourth characteristics of this invention, the fan support is provided with a bevel gear set that transmits rotating force generated from each of the fans in a perpendicular direction, and the power generating unit is mounted to each fan support, so that rotating force is transmitted from the bevel gear set to the power generating unit.

[27] According to the fifth characteristics of this invention, the aerial support wire comprises a plurality of aerial support wires which are installed to be parallel to each other and to be located at upper and lower positions, a fan support is vertically mounted to each of upper and lower portions of each of the aerial support wires, and each of the fans is mounted to an end of the fan support.

[28] In this case, the fan support is secured to the aerial support wire through a cross- shaped coupler.

[29] Further, in order to accomplish the object, the present invention provides a wind power generator, including a plurality of support poles set up to be spaced apart from each other by a predetermined distance; at least one aerial support wire connected between the support poles; a plurality of fans arranged in a row along and supported by the aerial support wire, and rotated by wind; a hydraulic system driving a hydraulic motor using a rotating force transmitted from the fans through a hydraulic pump; and a power generating unit generating electricity, using a rotating force transmitted from the hydraulic motor.

Advantageous Effects

[30] As described above, the wind power generator according to the present invention is advantageous in that several fans are installed in a row between two support poles to produce electric power, thus reducing initial investment, and generating a large amount of power, therefore increasing economic efficiency. [31] Further, the wind power generator of the invention is constructed so that rotating force generated by several fans is transmitted through a hydraulic pump and a hydraulic motor to a power generating unit, thus producing electric power. This allows power to be simply transmitted from several fans to one power generating unit, it is easy to control the output of the power generating unit, and the cost of maintenance and repair of the power generating equipment is reduced.

Brief Description of the Drawings [32] FIG. 1 is a view showing the construction of a wind power generator, according to the first embodiment of the present invention;

[33] FIG. 2 is a detailed view showing important parts of FIG. 1;

[34] FIG. 3 is a view showing the construction of a wind power generator, according to the second embodiment of the present invention;

[35] FIG. 4 is a detailed view showing important parts of FIG. 3;

[36] FIG. 5 is a view showing the construction of a wind power generator, according to the third embodiment of the present invention;

[37] FIG. 6 is a detailed view showing portion 'A', circled in FIG. 5;

[38] FIG. 7 is a hydraulic circuit diagram, according to the third embodiment of the present invention; [39] FIG. 8 is a view showing the construction of a wind power generator, according to the fourth embodiment of the present invention;

[40] FIG. 9 is a detailed view showing portion 'B', circled in FIG. 8; and

[41] FIG. 10 is a view showing the construction of a wind power generator, according to the fifth embodiment of the present invention.

Best Mode for Carrying Out the Invention [42] Hereinafter, the preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. [43] FIG. 1 is a view showing the construction of a wind power generator, according to the first embodiment of the present invention, and FIG. 2 is a detailed view showing important parts of FIG. 1. [44] As shown in the drawings, the wind power generator according to the first embodiment of the present invention includes a plurality of support poles 10, an aerial support wire 13, a plurality of fans 17, and power generating units 18. The support poles 10 are set up such that they are spaced apart from each other by a considerable distance. The aerial support wire 13 is horizontally strung between the support poles 10 and connects the support poles 10 to each other. The fans 17 are arranged in a row along and are supported by the aerial support wire 13, and are rotated by wind. The rotating force of the fans 17 is transmitted to the power generating units 18, and thus the power generating units 18 generate electricity.

[45] Each support pole 10 comprises a general metal rod, a steel tower structure, or a concrete structure, such as an electric pole. Preferably, the support pole 10 is installed in a windy area, such as a valley between mountains or the peaks 1 of islands.

[46] The aerial support wire 13 comprises a linear member having sufficient tensile force and strength, such as a reinforcing rod- type rope. The aerial support wire 13 is installed to be secured to the support poles 10. The aerial support wire 13 may comprises one long line member. Preferably, the aerial support wire 13 may comprise a plurality of line members coupled to each other using joints 15. Such a construction allows the aerial support wire 13 to be easily installed and extended.

[47] According to this embodiment, each fan 17 and each power generating unit 18 are formed as one integrated set, and are directly mounted on the aerial support wire 13. Of course, since the aerial support wire 13 does not rotate, the fans 17 are rotatably mounted on the aerial support wire 13 via bearings or similar components.

[48] Further, power lines 19 are connected between the support poles 10, and are connected to respective power generating units 18, thus delivering power to the outside.

[49] Unlike this construction, the power lines 19 may be connected to the support poles

10 through the interior of the aerial support wire 13, without being separately installed. Further, the power generating units 18 may be connected in series or in parallel to a power load or a power storage system, such as a battery.

[50] Meanwhile, it is preferable that adjacent fans 17 be orientated in opposite directions, thus offsetting rotation torques. That is, if the fans 17 are rotated in only one direction, considerable torque is generated on the aerial support wire 13. However, the front fan 17 and the back fan 17 are installed to rotate in opposite directions, thus reducing torsion torque generated on the support poles 10 when the fans 17 are rotated.

[51] Further, a lightning conducting wire 20 is connected between the support poles 10 so as to protect the power generating units 18 from lightning. The lightning conducting wire 20 is connected to external grounding parts 22 through lightning rods 21 mounted to the corresponding support poles 10.

[52] The wind power generator according to the first embodiment of the invention is constructed such that several fans 17 and power generating units 18 are installed in a row between the support poles 10. As the respective fans 17 rotate, power generated from the respective power generating units 18 is stored through the power lines, and is supplied to consumers.

[53] The wind power generator of the present invention allows several fans 17 to be si- multaneously mounted on one aerial support wire 13, thus producing a larger amount of power, therefore reducing the initial installation cost of the power equipment, and increasing economic efficiency when power is produced.

[54] FIG. 3 is a view showing the construction of a wind power generator, according to the second embodiment of the present invention, and FIG. 4 is a detailed view showing important parts of FIG. 3.

[55] As shown in the drawings, the wind power generator according to the second embodiment of the invention is constructed so that an aerial support wire 113 is connected between support poles 110, and a lightning conducting wire 120 is connected above the aerial support wire 113, in the same manner as the first embodiment.

[56] The particular feature of the second embodiment of the invention is that a rotating shaft 115 is provided parallel to the aerial support wire 113, so that the fans 117 are directly installed on the rotating shaft 115 and thus rotate. The rotating shaft 115 is connected to the aerial support wire 113 through shaft support wires 122. Bearings 123 are installed between the shaft support wires 122 and the rotating shaft 115.

[57] In this case, the rotating shaft 115 comprises a plurality of steel rods which are connected to each other using universal joints 116, so that the steel rods are assembled to be bendable relative to each other at a predetermined angle. Of course, it is possible to connect the steel rods to each other using clutch-type joints allowing power to be controlled, in place of the universal joints 116.

[58] A power generating unit 118 is provided at one end of the rotating shaft 115, and generates electricity when the rotating shaft 115 is rotated by the fans 117. Further, a shaft bearing 125 is installed at the other end of the rotating shaft 115.

[59] The wind power generator according to the second embodiment of the invention is constructed so that several fans 117 are installed in a row on one rotating shaft 115, and power is produced from one power generating unit 118, thus reducing the installation costs of power equipment, and producing a large amount of power.

[60] FIG. 5 is a view showing the construction of a wind power generator, according to the third embodiment of the present invention, FIG. 6 is a detailed view showing portion 'A', circled in FIG. 5, and FIG. 7 is a hydraulic circuit diagram, according to the third embodiment of the present invention.

[61] As shown in the drawings, the wind power generator according to the third embodiment of the invention is constructed so that aerial support wires 213 and 215 are installed between support poles 210 to be located parallel to each other and at upper and lower positions.

[62] Further, fan supports 222 are installed between the aerial support wires 213 and

215, and function to vertically support fans 217. In this case, the fan supports 222 are constructed so that the fans 217 can freely rotate according to the direction of the wind.

[63] As shown in FIG. 6, a bevel gear set 224 is provided on each fan support 222, and transmits rotating power generated from the fans 217 in perpendicular direction. The bevel gear set 224 functions to transmit power between a fan shaft 218 and a transmission shaft 225. Of course, in order to protect the bevel gear set 224, a gear housing 223 is provided on the fan support 222. Preferably, the gear housing 223 is installed to rotate freely relative to the corresponding fan support 222.

[64] A power transmission means is provided between the lower end of each fan support

222 and the lower aerial support wire 215, and transmits power transmitted by the transmission shaft 225 to a power generating unit 260. As shown in FIG. 5, the power transmission means includes a plurality of hydraulic pumps 230, a hydraulic motor 240, and a transmission 250. The hydraulic pumps 230 are driven by the respective fans 217. The hydraulic motor 240 is rotated by the hydraulic pressure generated by each hydraulic pump 230, and drives the power generating unit 260. The transmission 250 is provided between the hydraulic motor 240 and the power generating unit 260, and functions to control a rotating speed.

[65] It is preferable that one hydraulic pump 230 be provided on each fan 217. As each transmission shaft 225 of FIG. 6 rotates, the corresponding hydraulic pump is operated to generate hydraulic pressure. The hydraulic pressure is transmitted to the hydraulic motor 240.

[66] In this case, the hydraulic pumps 230 are connected to the hydraulic motor 240 via a hydraulic hose 233. The hydraulic hose 233 may be connected to the hydraulic pumps 230 in series or in parallel. According to this embodiment, the hydraulic hose is connected to the hydraulic pumps in series.

[67] A plurality of shutoff valves, a bypass valve, and an automatic pressure valve are provided on the pipeline between the hydraulic pumps 230 and the hydraulic motor 240. The shutoff valves open or close a path to allow a hydraulic system to be easily repaired or controlled. The bypass valve functions to allow the path to be bypassed. The automatic pressure valve automatically regulates the pressure in the pipeline.

[68] That is, referring to FIG. 7, a supply shutoff valve V2 and a discharge shutoff valve

Vl are provided around each hydraulic pump 230. A bypass line BL and a bypass valve BV are provided such that fluid does not pass through each hydraulic pump 230. An automatic pressure valve PV for preventing excessive pressure is provided on a protection line PL, which couples an inlet to an outlet of each hydraulic pump 230.

[69] Further, a shutoff valve V3 is provided at a position around the hydraulic motor

240. A bypass valve BV and an automatic pressure valve PV are respectively provided on a line BL' and a line PL', which couple an inlet to an outlet of the hydrauli c motor 240. [70] In this case, the valves are constructed to be operated manually or automatically.

When the valves are automatically operated, it is preferable that the valves be automatically operated in response to a control signal from a control unit 270, which will be described below.

[71] Further, an accumulator or a hydraulic tank 235 is provided on the hydraulic hose

233 to accumulate or replenish hydraulic fluid, such as gas or liquid.

[72] Meanwhile, a pressure or flow sensor 236 is provided on the hydraulic hose 233. A signal detected by the flow sensor 236 is input to the control unit 270, so that the control unit 270 controls the rotating force of the hydraulic motor 240.

[73] In this case, it is preferable that the hydraulic motor 240 comprise a multistage hydraulic motor 240 the speed of which can be adjusted. Of course, even if the hydraulic motor 240 is not a multistage hydraulic motor 240, the shutoff valves Vl and V2 and the bypass valve BV provided around each hydraulic pump 230, or the bypass valve BV provided around the hydraulic motor 240 are automatically controlled, thus adjusting the amount of fluid flowing into the hydraulic motor 240, therefore adjusting the output rotating speed.

[74] Meanwhile, a lightning conducting wire 220 is connected to the support poles 210 so as to reduce damage to the fans 217 if struck by lightning.

[75] In the wind power generator according to the third embodiment of the invention, several fans 217 are installed between the support poles 210, and power generated from respective fans 217 is transmitted through the hydraulic pumps 230 and the hydraulic hose 233 to the hydraulic motor 240, thus driving the hydraulic motor 240. Further, one power generating unit 260 is operated by the driving force of the hydraulic motor 240, thus producing power.

[76] Particularly, the power generated from the respective fans 217 is transmitted to the power generating unit 260 using hydraulic pressure, thus reducing the overall weight of the system, including the fans 217 installed between the support poles 210.

[77] Thus, according to this embodiment, the power generated from several fans 217 is transmitted to the power generating unit 260 using the hydraulic system, thus reducing the loss of power, initial installation costs, and maintenance costs, and generating a large amount of power, therefore enhancing economic efficiency.

[78] Further, the hydraulic system is controlled via the control unit 270 and various valves, thus allowing the fans 217 and the power generating unit 260 to be more efficiently operated, and enabling easy adjustment of the output of the power generating unit 260.

[79] FIG. 8 is a view showing the construction of a wind power generator, according to the fourth embodiment of the present invention, and FIG. 9 is a detailed view showing portion 'B', circled in FIG. 8. [80] As shown in the drawings, the wind power generator according to the fourth embodiment of the present invention is constructed so that aerial support wires 313 and 315 are connected between support poles 310 and located at upper and lower positions, and a lightning conducting wire 320 is provided at the uppermost position, in the same manner as the third embodiment.

[81] Further, a fan support 322 is installed between the aerial support wires 313 and 315 to vertically support each fan 317. As shown in FIG. 9, a bevel gear set 324 is provided on the fan support 322 to transmit rotating force generated from each fan 317 in a perpendicular direction.

[82] In this case, the bevel gear set 324 transmits power between a fan shaft 318 and a transmission shaft 325. A gear housing 323 is provided outside the bevel gear set 324 to protect the bevel gear set 324 and allow the free rotation of each fan 317.

[83] Particularly, according to this embodiment, a power generating unit 360 is provided on the upper end of each fan support 322. Rotating force is transmitted from the transmission shaft 325 to the power generating unit 360, thus generating electric power. The generated electricity is delivered through a power line connected to each fan support 322 and the aerial support wire 313 to an external power load or a power storage system, such as a battery.

[84] As such, the wind power generator according to the fourth embodiment of the present invention is constructed so that several fans 317 are installed in a row between the support poles 310, and power is generated from each of the power generating units 360, thus reducing the installation cost of the power generating equipment and producing a large amount of power.

[85] FIG. 10 is a view showing the construction of a wind power generator, according to the fifth embodiment of the present invention.

[86] As shown in the drawing, the wind power generator according to the fifth embodiment of the invention is constructed so that aerial support wires 413 and 415 are connected to two support poles 410 and are located at upper and lower positions, and a lightning conducting wire 420 is provided above the aerial support wires 413 and 415, as in the above-mentioned embodiments.

[87] Particularly, according to this embodiment, the aerial support wires 413 and 415 are installed at upper and lower positions in such a way as to be adjacent to each other. Fan supports 422 and 422' are vertically mounted to the upper and lower portions of the aerial support wires 413 and 415. A fan 417 and a power generating unit 418 are installed at an end of the fan supports 422, and a fan 417' and a power generating unit 418' are installed at an end of the fan supports 422'.

[88] Preferably, the fan supports 422 and 422' are secured to respective aerial support wires 413 and 415 through cross-shaped couplers 425. Further, the aerial support wires 413 and 415 located at upper and lower positions are coupled through the couplers 425.

[89] The power produced from the power generating unit 418 of the fan 417 and the power generating unit 418' of the fan 417' is delivered through power lines, which are provided in the fan supports 422 and 422', and the aerial support wires 413 and 415, to the exterior.

[90] According to this embodiment, the fan supports 422 and 422' are mounted to the plurality of aerial support wires 413 and 415. However, only one aerial support wire may be used, in which case the fan supports may be provided above and under the aerial support wire, according to the installation conditions. Further, different kinds of fans may be mounted to respective fan supports 422 and 422', according to the installation conditions.

[91] The wind power generator according to the fifth embodiment of this invention is constructed so that several fan supports 422 and 422' are installed between the support poles 410 and are located at upper and lower positions, and the fans 417 and 417' are installed at respective ends of the fan supports 422 and 422', thus producing power, therefore reducing the installation cost of power generating equipment and producing a large amount of power.

Claims

[1] A wind power generator, comprising: a plurality of support poles set up to be spaced apart from each other by a predetermined distance; at least one aerial support wire connected between the support poles; a plurality of fans arranged in a row along and supported by the aerial support wire, and rotated by wind; and a power generating unit generating electricity, using rotating force transmitted from the plurality of fans. [2] The wind power generator according to claim 1, wherein the aerial support wire comprises a linear member, and is supported at opposite ends thereof by the support poles, and each of the fans and the power generating unit form one set, the set being installed on the aerial support wire to generate electricity. [3] The wind power generator according to claim 2, wherein a power line is connected between the support poles, and is connected to the power generating unit to deliver power to an outside. [4] The wind power generator according to claim 2, wherein the fans are installed such that two adjacent fans are oriented in opposite directions, thus offsetting rotation torques. [5] The wind power generator according to claim 2, wherein the aerial support wire comprises a plurality of linear members which are coupled to each other using joints. [6] The wind power generator according to any one of claims 2 to 5, further comprising: a lightning conducting wire connected between the support poles to protect the wind power generator from lightning. [7] The wind power generator according to claim 1, further comprising: a rotating shaft provided parallel to the aerial support wire and rotating along with the fans, the rotating shaft being connected to the aerial support wire via a shaft support wire. [8] The wind power generator according to claim 7, wherein the power generating unit is provided on at least one side of the rotating shaft, and generates electricity as the rotating shaft rotates. [9] The wind power generator according to claim 7, wherein the rotating shaft comprises a plurality of shafts, the shafts being coupled to each other using universal joints. [10] The wind power generator according to any one of claims 7 to 9, further comprising: a lightning conducting wire connected between the support poles to protect the wind power generator from lightning. [11] The wind power generator according to claim 1, wherein the aerial support wire comprises a plurality of aerial support wires which are installed to be parallel to each other and to be located at upper and lower positions, and a fan support is installed between the aerial support wires to support each of the fans in a vertical direction. [12] The wind power generator according to claim 11, wherein the fan support is provided with a bevel gear set that transmits rotating force generated by each of the fans in a perpendicular direction. [13] The wind power generator according to claim 11, wherein a power transmission means is provided at a position around the fan support, and transmits power, generated by rotation of each of the fans, to the power generating unit. [14] The wind power generator according to claim 13, wherein the power transmission means comprises: a hydraulic pump driven by each of the fans; and a hydraulic motor rotated by a hydraulic pressure generated from the hydraulic pump, thus driving the power generating unit. [15] The wind power generator according to claim 14, further comprising: a transmission provided between the hydraulic motor and the power generating unit, and controlling a rotating speed thereof. [16] The wind power generator according to claim 14, further comprising: a plurality of shutoff valves provided on a pipeline between the hydraulic pump and the hydraulic motor, thus opening or closing a path. [17] The wind power generator according to claim 14, further comprising: a bypass line and a bypass valve provided on the pipeline between the hydraulic pump and the hydraulic motor, thus allowing the path to be bypassed. [18] The wind power generator according to claim 14, further comprising: an automatic pressure valve provided on the pipeline between the hydraulic pump and the hydraulic motor. [19] The wind power generator according to claim 11, wherein the fan support is provided with a bevel gear set that transmits rotating force generated from each of the fans in a perpendicular direction, and the power generating unit is mounted to each fan support, so that rotating force is transmitted from the bevel gear set to the power generating unit. [20] The wind power generator according to claim 11, further comprising: a lightning conducting wire connected between the support poles to protect the wind power generator from lightning. [21] The wind power generator according to claim 1, wherein the aerial support wire comprises a plurality of aerial support wires which are installed to be parallel to each other and to be located at upper and lower positions, a fan support is vertically mounted to each of upper and lower portions of each of the aerial support wires, and each of the fans is mounted to an end of the fan support. [22] The wind power generator according to claim 21, wherein the fan support is secured to the aerial support wire through a cross-shaped coupler. [23] A wind power generator, comprising: a plurality of support poles set up to be spaced apart from each other by a predetermined distance; at least one aerial support wire connected between the support poles; a plurality of fans arranged in a row along and supported by the aerial support wire, and rotated by wind; a hydraulic system driving a hydraulic motor using a rotating force transmitted from the fans through a hydraulic pump; and a power generating unit generating electricity, using a rotating force transmitted from the hydraulic motor.