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CN-121976913-A - High-altitude power generation system

CN121976913ACN 121976913 ACN121976913 ACN 121976913ACN-121976913-A

Abstract

The invention relates to the technical field of wind power generation and discloses a high-altitude power generation system, which comprises a suspension component, a roller type power generation unit, a mooring system and a power system, wherein the suspension component can suspend in the air and forms a channel inside, the roller type power generation unit is arranged in the channel and comprises a supporting component, a cylinder body and a power generation assembly, the cylinder body is driven by air flow flowing through the channel to rotate around the axis of the air flow, the power generation assembly is used for converting the rotary mechanical energy of the cylinder body into electric energy, the mooring system comprises a cable and a winch arranged on the ground, the cable is arranged between the suspension component and the winch, the winch is used for adjusting the suspension height of the suspension component by winding and unwinding the cable, and the power system is electrically connected with the power generation assembly and is used for transmitting, converting or storing the electric energy generated by the power generation assembly. The high-altitude power generation system provided by the embodiment of the invention can realize the utilization of wind energy with different heights, has good adaptability to wind speed, and is compact in structure and stable in power generation.

Inventors

  • LI ZHUOXIN
  • HOU YU
  • LIU XUEWU
  • ZHANG PENGYUAN
  • ZHAO JIAN
  • MENG LIJING

Assignees

  • 中国华电科工集团有限公司
  • 华电中光新能源技术有限公司

Dates

Publication Date
20260505
Application Date
20260206

Claims (10)

  1. 1. A high altitude power generation system, comprising: a levitation part (1), the levitation part (1) being levitated in the air, the interior of the levitation part (1) forming a channel (11); A drum-type power generation unit (2), wherein the drum-type power generation unit (2) is arranged in the channel (11) and comprises a supporting component (21), a drum body (22) and a power generation assembly (23), the supporting component (21) is connected with the suspension component (1), the drum body (22) is rotatably arranged on the supporting component (21) so that the air flow flowing through the channel (11) drives the drum body (22) to rotate around the axis of the drum body, and the power generation assembly (23) is used for converting the rotary mechanical energy of the drum body (22) into electric energy; -a mooring system (3), the mooring system (3) comprising a cable (31) and a winch (32) provided on the ground, the cable (31) being provided between the levitation component (1) and the winch (32), the winch (32) being adapted to adjust the levitation height of the levitation component (1) by retrieving the cable (31); -an electrical power system (4), the electrical power system (4) being electrically connected to the power generation assembly (23) for transmitting, converting or storing electrical energy generated by the power generation assembly (23).
  2. 2. The high-altitude power generation system according to claim 1, characterized in that the axis of the cylinder (22) is parallel to the axis of the channel (11), a plurality of through holes (24) are provided on the side wall of the cylinder (22), and the exhaust air flow of the through holes (24) can generate tangential force on the cylinder (22).
  3. 3. The high-altitude power generation system according to claim 2, wherein the distribution of the plurality of through holes (24) on the side wall of the cylinder (22) comprises: Are unevenly distributed along the circumference of the cylinder (22) to form a dense hole area and a Kong Xishu area, and/or, Is distributed along the axial gradient of the cylinder (22) and the density of the through holes (24) near the open end is gradually increased, and/or, Spirally arranged along the outer peripheral surface of the cylinder (22), and/or, Is arranged in areas, and the apertures of the through holes (24) in each area are different.
  4. 4. A high-altitude power generation system according to claim 3, wherein the cylinder (22) is a conical cylinder or a truncated conical cylinder open at one axial end, the open end of the cylinder (22) being directed in the direction of the incoming flow of the air stream and the opposite end being provided with a vent.
  5. 5. The high-altitude power generation system according to claim 4, wherein, in a section passing through a central axis of the cylinder (22), a side wall of the cylinder (22) forms an angle of 5 ° to 20 ° with the central axis thereof.
  6. 6. The overhead power generation system according to claim 1, wherein the power generation assembly (23) includes a magnetic field component and an armature component that are disposed opposite to each other, one of the magnetic field component and the armature component being connected to the cylinder (22) and rotating with the cylinder (22), the other of the magnetic field component and the armature component being fixed opposite to the support component (21).
  7. 7. The high-altitude power generation system according to claim 1, wherein the supporting member (21) comprises a fixed cylinder coaxially sleeved outside the cylinder (22), an annular flow passage is formed between the fixed cylinder and the cylinder (22), and a guide rib extending along the axial direction of the fixed cylinder is provided on the inner wall surface of the fixed cylinder.
  8. 8. The high-altitude power generation system according to claim 1, characterized in that the suspension member (1) is an inflatable annular balloon, the central area of which forms the channel (11), the interior of the balloon being divided into a plurality of independent compartments.
  9. 9. The high-altitude power generation system according to claim 1, wherein the power system (4) comprises a cable (41) and an electric energy processing device (42) arranged on the ground, one end of the cable (41) is connected with the power generation assembly (23), the other end of the cable (41) is connected with the electric energy processing device (42), and the electric energy processing device (42) comprises at least one of a grid-connected inverter, an energy storage device and a direct current converter.
  10. 10. The high altitude power generation system of claim 8, further comprising a control system comprising: a monitoring module for acquiring at least one of the wind speed and direction of the air flow, the state of the levitation component (1), the tension of the cable (31), the internal pressure of the air bag and the power generation parameter of the power generation assembly (23); The control module is in communication connection with the monitoring module, the winch (32) and the power generation assembly (23) and is used for controlling the action of the winch (32) according to the information collected by the monitoring module so as to adjust the levitation height and control the power of the power generation assembly (23).

Description

High-altitude power generation system Technical Field The invention belongs to the field of wind power generation, and particularly relates to a high-altitude power generation system. Background In the related technology, the high-altitude wind energy utilization scheme mostly adopts kite type, wing type aircraft type or flexible wing type structure to generate power by matching with a blade type wind driven generator, the mode has strong dependence on the uniformity of the incoming wind direction and the wind field, the problems of slow starting, large load fluctuation, aggravation of structural fatigue and the like easily occur in a high-altitude environment, and the whole dimension and the inertia are high when the system is combined with a floating system, so that the attitude control and the mooring safety risk of the system are increased. Thus, there is a need for a power generation configuration that provides good starting performance, is compact, and is suitable for use in conjunction with buoyancy systems. Disclosure of Invention The present invention aims to solve at least one of the technical problems in the related art to some extent. Therefore, the embodiment of the invention provides the high-altitude power generation system which can realize the utilization of wind energy with different heights, has good adaptability to wind speed, and has compact structure and stable power generation. The high-altitude power generation system comprises a suspension component, a roller-type power generation unit, a mooring system and a power system, wherein the suspension component can suspend in the air, a channel is formed in the suspension component, the roller-type power generation unit is arranged in the channel and comprises a support component, a cylinder body and a power generation assembly, the support component is connected with the suspension component, the cylinder body is rotatably arranged on the support component, so that air flow flowing through the channel drives the cylinder body to rotate around the axis of the cylinder body, the power generation assembly is used for converting the rotary mechanical energy of the cylinder body into electric energy, the mooring system comprises a cable and a winch arranged on the ground, the cable is arranged between the suspension component and the winch, the winch is electrically connected with the power generation assembly by retracting the cable to adjust the suspension height of the suspension component, and the power generation assembly is used for transmitting, converting or storing the electric energy generated by the power generation assembly. According to the high-altitude power generation system provided by the embodiment of the invention, the power generation unit is lifted to the high altitude through the suspension component, the high altitude is utilized to stabilize wind energy, a high tower foundation is not required to be built, and the deployment cost and the geographic limitation are reduced. The drum-type power generation unit drives the drum body to rotate through air flow and generate power, has a relatively simple structure, is insensitive to wind speed change, has high starting speed, and is suitable for high-altitude complex wind fields. The mooring system realizes the height adjustment and the safe anchoring, the electric power system completes the electric energy transmission and the treatment, and the whole system forms the adjustable and easy-to-deploy high-altitude wind power generation system. In some embodiments, the axis of the cylinder is parallel to the axis of the channel, a plurality of through holes are arranged on the side wall of the cylinder, and the exhaust air flow of the through holes can generate tangential force on the cylinder. In some embodiments, the distribution of the plurality of through holes on the side wall of the cylinder comprises one or more of non-uniform distribution along the circumferential direction of the cylinder to form a hole dense region and a Kong Xishu region, gradient distribution along the axial direction of the cylinder, gradually increasing the density of the through holes near the open end, spiral arrangement along the peripheral surface of the cylinder, and zonal arrangement, wherein the pore diameters of the through holes in each zone are different. In some embodiments, the cylinder is a conical cylinder or a truncated conical cylinder with an axial end opening, the open end of the cylinder facing the direction of the incoming flow of the air stream and the opposite end being provided with a vent. In some embodiments, the sidewall of the barrel is angled from 5 ° to 20 ° from its central axis in a cross section through the central axis of the barrel. In some embodiments, the power generation assembly includes a magnetic field component and an armature component disposed opposite one another, one of the magnetic field component and the armature component being coupled to and rotatab