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CN-121976912-A - High-altitude wind power generation system

CN121976912ACN 121976912 ACN121976912 ACN 121976912ACN-121976912-A

Abstract

The invention relates to the technical field of wind power generation and discloses a high-altitude wind power generation system, which comprises a buoyancy component capable of being suspended in the air, a main bearing cable connected with the buoyancy component, a barrel type power generation unit, a winch and a power transmission system, wherein the barrel type power generation unit is sleeved on the main bearing cable and comprises a barrel and a power generation assembly, a plurality of through holes are formed in the side wall of the barrel, air flow forms pressure difference inside and outside the barrel and drives the barrel to rotate, the power generation assembly can convert rotary mechanical energy into electric energy, a winch is used for adjusting the suspension height of the buoyancy component and the barrel type power generation unit by winding and unwinding the main bearing cable, the power transmission system is connected with the power generation assembly, and the power transmission system is used for transmitting, converting or storing the electric energy generated by the power generation assembly. The high-altitude wind power generation system provided by the embodiment of the invention can efficiently utilize wind power resources with different heights, has a compact structure, small starting resistance and wide application range to wind direction and wind speed.

Inventors

  • LI ZHUOXIN
  • LIU XUEWU
  • HU XIAOCHUN
  • WANG HONGYU
  • WANG XIAOSU
  • DUAN YIKAI

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 wind power generation system, comprising: a buoyancy member (1), the buoyancy member (1) being floatable in the air; a main load-carrying cable (2), one end of the main load-carrying cable (2) being connected to the buoyancy member (1); The cylinder type power generation unit (3), the cylinder type power generation unit (3) is sleeved on the main bearing cable (2) and comprises a cylinder body (31) and a power generation assembly (32), a plurality of through holes (33) are formed in the side wall of the cylinder body (31) so as to form pressure difference inside and outside the cylinder body (31) when airflow flows through the cylinder body (31) and drive the cylinder body (31) to rotate around the main bearing cable (2), and the power generation assembly (32) is used for converting the rotary mechanical energy of the cylinder body (31) into electric energy; A winch (4), the winch (4) being connected to the other end of the main load cable (2), the winch (4) being configured to adjust the levitation height of the buoyancy member (1) and the barrel power generation unit (3) by winding and unwinding the main load cable (2); -a power transmission system (5), the power transmission system (5) being connected to the power generation assembly (32), the power transmission system (5) being adapted to transmit, convert or store electrical energy generated by the power generation assembly (32).
  2. 2. The high-altitude wind power generation system according to claim 1, wherein the through hole (33) is at least one of a regular hole and a profiled hole, and/or, A plurality of said through holes (33) having different dimensions, and/or, A plurality of through holes (33) are spirally arranged along the outer peripheral surface of the cylinder body (31), and/or A plurality of through holes (33) are arranged in regions along the outer peripheral surface of the cylinder (31), and the number of through holes (33) in each region is different.
  3. 3. High-altitude wind power generation system according to claim 1, characterized in that the axis of the drum (31) coincides with the axis of the main carrying cable (2), the drum (31) being rotatably mounted on the main carrying cable (2) by means of a bearing assembly.
  4. 4. High-altitude wind power generation system according to claim 1, characterized in that the power generation assembly (32) comprises a generator, the rotor of which is connected to the drum (31) and rotates with the drum (31), the stator of which is fixed with respect to the main carrying cable (2).
  5. 5. The high-altitude wind power generation system according to claim 1, wherein a plurality of the drum-type power generation units (3) are provided, and the plurality of the drum-type power generation units (3) are arranged at intervals along the length direction of the main carrying cable (2).
  6. 6. The high-altitude wind power generation system according to claim 5, further comprising a connection member for connecting the adjacent two cylinders (31) so as to rotate the adjacent two cylinders (31) in synchronization.
  7. 7. The high-altitude wind power generation system according to claim 1, wherein, The buoyancy member (1) includes an umbrella-shaped air bag and auxiliary air bags distributed along the circumferential direction of the umbrella-shaped air bag, and, The umbrella-shaped air bags and the auxiliary air bags are connected with the main bearing cables (2) through the auxiliary bearing cables (6).
  8. 8. The high altitude wind power generation system according to claim 1, further comprising a control system (7), the control system (7) comprising: The monitoring module is used for collecting at least one of information of wind speed and direction, the posture of the buoyancy component (1), the tension of the main bearing cable (2), the rotating speed of the cylinder (31) and the power generation parameter of the power generation assembly (32); The control module is in communication connection with the monitoring module and the winch (4) and is used for controlling at least one of the action of the winch (4), the rotating speed of the cylinder (31) and the power of the power generation assembly (32) according to the information collected by the monitoring module.
  9. 9. The high altitude wind power generation system according to claim 1, wherein the power transmission system (5) comprises a wire connecting the power generation assembly (32) and the power processing device and a power processing device provided on the ground, the power processing device comprising at least one of a grid-connected inverter, an energy storage device, and a dc converter.
  10. 10. The high-altitude wind power generation system according to claim 9, characterized in that at least part of the main carrying cable (2) is a composite cable comprising a carrying layer, wherein the wires are provided within the carrying layer; the composite cable also comprises a signal wire arranged in the bearing layer and/or a protective layer arranged outside the bearing layer.

Description

High-altitude wind power generation system Technical Field The invention belongs to the technical field of wind power generation, and particularly relates to a high-altitude wind 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. In addition, in the related art, wind energy for different heights is not fully utilized. 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 wind power generation system which can efficiently utilize wind power resources with different heights, has a compact structure and small starting resistance, and has a wide application range for wind direction and wind speed. The high-altitude wind power generation system comprises a buoyancy component, a main bearing cable, a barrel type power generation unit, a winch and a power transmission system, wherein the buoyancy component can be suspended in the air, one end of the main bearing cable is connected with the buoyancy component, the barrel type power generation unit is sleeved on the main bearing cable and comprises a barrel body and a power generation assembly, a plurality of through holes are formed in the side wall of the barrel body, so that when air flows through the barrel body, pressure difference is formed inside and outside the barrel body and the barrel body is driven to rotate around the main bearing cable, the power generation assembly is used for converting the rotating mechanical energy of the barrel body into electric energy, the winch is connected with the other end of the main bearing cable, the winch is used for adjusting the suspended height of the buoyancy component and the barrel type power generation unit through collecting and releasing the main bearing cable, the power transmission system is connected with the power generation assembly, and the power transmission system is used for transmitting, converting or storing the electric energy generated by the power generation assembly. The high-altitude wind power generation system provided by the embodiment of the invention has the advantages that the barrel type power generation unit is lifted to the middle and high altitude through the buoyancy component, the barrel body rotates to generate power by virtue of wind power, the winch is matched to realize the height adjustment and the safe recovery, the high foundation and the hoisting cost of the traditional high-tower fan are avoided, the pain points of the existing high-altitude system, which depend on complex flight control and are insufficient in stability, are solved, the stall risk is reduced by the barrel type structure, the adaptability and the power generation continuity of the high altitude complex wind condition are improved, the optimal wind layer can be actively tracked by the height adjustable function, and the wind resource utilization rate and the annual energy generation are remarkably improved. In some embodiments, the through holes are at least one of regular holes and profiled holes. In some embodiments, the sizes of the plurality of through holes are different. In some embodiments, the plurality of through holes are spirally arranged along an outer circumferential surface of the cylinder. In some embodiments, a plurality of the through holes are arranged in regions along the outer circumferential surface of the cylinder, the number of the through holes being different for each region. In some embodiments, the axis of the drum coincides with the axis of the main load cable on which the drum is rotatably mounted by a bearing assembly. In some embodiments, the power generation assembly includes a generator having a rotor coupled to and rotating with the drum, a stator of the generator being fixed relative to the primary load cable. In some embodiments, the plurality of drum-type power generating units are arranged at intervals along the length direction of the main bearing cable. In some embodiments, the high-altitude wind power generation system further comprises a connecting member for connecting the adjacent two cylinders so as to enable the adjacent two cylinders to rotate synchronously. In some embodiments, the buoyancy member includes an umbrella balloon and auxiliary balloons distributed along a circumference