CN114046223A - Self-protection offshore wind power system with telescopic blades and working method thereof - Google Patents

Self-protection offshore wind power system with telescopic blades and working method thereof Download PDF

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Publication number
CN114046223A
CN114046223A CN202111389853.5A CN202111389853A CN114046223A CN 114046223 A CN114046223 A CN 114046223A CN 202111389853 A CN202111389853 A CN 202111389853A CN 114046223 A CN114046223 A CN 114046223A
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China
Prior art keywords
blade
motor
wind power
offshore wind
self
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Pending
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CN202111389853.5A
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Chinese (zh)
Inventor
李腾
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Huaneng Clean Energy Research Institute
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Huaneng Clean Energy Research Institute
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Priority to CN202111389853.5A priority Critical patent/CN114046223A/en
Publication of CN114046223A publication Critical patent/CN114046223A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/06—Rotors
    • F03D1/065—Rotors characterised by their construction elements
    • F03D1/0675—Rotors characterised by their construction elements of the blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
    • F03D13/22—Foundations specially adapted for wind motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
    • F03D13/25—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors specially adapted for offshore installation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D15/00—Transmission of mechanical power
    • F03D15/10—Transmission of mechanical power using gearing not limited to rotary motion, e.g. with oscillating or reciprocating members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D7/00—Controlling wind motors 
    • F03D7/02—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/022—Adjusting aerodynamic properties of the blades
    • F03D7/0236—Adjusting aerodynamic properties of the blades by changing the active surface of the wind engaging parts, e.g. reefing or furling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D7/00—Controlling wind motors 
    • F03D7/02—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/028—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor controlling wind motor output power
    • F03D7/0292—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor controlling wind motor output power to reduce fatigue
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/10—Combinations of wind motors with apparatus storing energy
    • F03D9/11—Combinations of wind motors with apparatus storing energy storing electrical energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2270/00—Control
    • F05B2270/30—Control parameters, e.g. input parameters
    • F05B2270/32—Wind speeds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2270/00—Control
    • F05B2270/30—Control parameters, e.g. input parameters
    • F05B2270/323—Air humidity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2270/00—Control
    • F05B2270/30—Control parameters, e.g. input parameters
    • F05B2270/325—Air temperature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/727—Offshore wind turbines
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E70/00—Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Power Engineering (AREA)
  • Wind Motors (AREA)

Abstract

The invention discloses a self-protection offshore wind power system with telescopic blades and a working method thereof, and belongs to the technical field of offshore wind power. The cabin is connected with a support foundation, and the support foundation is fixed on the seabed; the transmission system, the generator, the control system and the energy storage system are arranged in the engine room, the blades are connected with the hub, and the hub is connected with the generator through the transmission system; the motor is arranged in the hub and is connected with the blades through the telescopic operating mechanism; the blade comprises a plurality of blade sections which are sequentially nested, and the blade sections can stretch and retract through the telescopic operating mechanism; the environment sensor is arranged in the external environment and is respectively connected with the control system; the generator is connected with the electric energy transmission system, the energy storage system is respectively connected with the motor and the electric energy transmission system, and the electric energy transmission system is connected to a power grid. The intelligent blade retracting device can intelligently judge and analyze the current environment condition, and quickly retract the blade when an extreme environment occurs, so that the blade is prevented from being damaged or damaged due to impact.

Description

Self-protection offshore wind power system with telescopic blades and working method thereof
Technical Field
The invention belongs to the technical field of offshore wind power, and particularly relates to a self-protection offshore wind power system with telescopic blades and a working method thereof.
Background
Over the last 20 years, driven by the crisis of fossil fuel energy and the pressure of environmental changes, new renewable energy sources are increasingly gaining attention globally. At present, development strategies such as ocean resource development and renewable energy are implemented in many countries, and the development and utilization of offshore wind power are important components in future energy structures. In the early-stage construction of large-scale projects, offshore wind power technology is widely applied, and has great development prospect in the future.
However, since the offshore environment is relatively severe, the blade is strongly impacted and often seriously damaged or even damaged when meeting extreme environments, which brings about great economic loss and potential safety hazard.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a self-protection offshore wind power system with retractable blades and a working method thereof, which can intelligently determine and analyze the current environmental conditions, and when an extreme environment occurs, the blades can be quickly retracted, thereby avoiding damage or damage of the blades caused by impact.
The invention is realized by the following technical scheme:
the invention discloses a self-protection offshore wind power system with telescopic blades and a working method thereof, wherein the self-protection offshore wind power system comprises blades, a hub, a transmission system, a generator, a cabin, an environmental sensor, a control system, a motor, a telescopic operating mechanism, a support foundation, an electric energy transmission system and an energy storage system;
the cabin is connected with a support foundation, and the support foundation is fixed on the seabed; the transmission system, the generator, the control system and the energy storage system are arranged in the engine room, the blades are connected with the hub, and the hub is connected with the generator through the transmission system; the motor is arranged in the hub and is connected with the blades through the telescopic operating mechanism; the blade comprises a plurality of blade sections which are sequentially nested, and the blade sections can stretch and retract through the telescopic operating mechanism; the environment sensor is arranged in the external environment and is connected with the control system; the generator is connected with the electric energy transmission system, the energy storage system is respectively connected with the motor and the electric energy transmission system, and the electric energy transmission system is connected to a power grid.
Preferably, the transmission system comprises a rotating shaft and a gear box, the hub is connected with the rotating shaft, the rotating shaft is connected with the gear box, and the gear box is connected with the generator.
Further preferably, the environmental sensor is provided at the front side of the nacelle.
Preferably, the environment sensor comprises a temperature sensor, a humidity sensor and a wind speed sensor, and the temperature sensor, the humidity sensor and the wind speed sensor are respectively connected with the control system.
Preferably, the telescopic operating mechanism comprises a rope and a strong spring, one end of the rope is fixedly connected with an output shaft of the motor, and the other end of the rope penetrates through the interiors of all the blade sections and is fixedly connected with the topmost blade section; the strong spring penetrates through the geometric center of the blade, one end of the strong spring is fixedly connected with the topmost blade section, the other end of the strong spring is fixedly connected with the hub, and the strong spring is in a compression state.
Preferably, the supporting foundation is a mono-pile foundation.
Preferably, the electric energy transmission system comprises an inverter and a transformer, the generator is connected with the inverter, the inverter is connected with the transformer, and the transformer is connected to the power grid through a cable.
Further preferably, the energy storage system comprises an energy storage battery and a relay, one end of the energy storage battery is connected with the motor, the other end of the energy storage battery is connected with the relay, and the relay is installed between the generator and the inverter.
Preferably, the number of the blade sections is more than or equal to 10, the outer diameter of the bottom of each blade section is larger than the inner diameter of the adjacent outer layer blade section, an inward convex annular bottom plate is arranged at the bottom of each blade section, and the bottom plate is used for supporting the adjacent blade sections when the blades are contracted.
The invention discloses a working method of the self-protection offshore wind power system with the telescopic blades, which comprises the following steps:
the environment sensor monitors external environment parameters and sends signals to the control system, when the external environment parameters are normal, the energy storage system does not supply power, the motor does not work, the blades rotate to generate power in an extended state, and the electric energy generated by the generator is transmitted to a power grid through the electric energy transmission system; when the generated electric energy cannot be received and consumed by the power grid, the energy storage system stores the electric energy;
when external environmental parameters are not beneficial to normal work of the fan, the control system sends an instruction, the energy storage system supplies power to the motor, and the rotating shaft of the motor rotates to enable the telescopic operating mechanism to drive the blades to contract; when the external environment parameters are recovered to be normal, the control system sends out an instruction, the energy storage system does not supply power to the motor, the rotating shaft of the motor is in an idle state, the telescopic operating mechanism drives the blades to extend, and the fan restarts to generate power.
Compared with the prior art, the invention has the following beneficial technical effects:
according to the self-protection offshore wind power system with the telescopic blades, disclosed by the invention, the environmental parameters of the area where the fan is located can be monitored in real time by the environmental sensor, the blades can be extended and contracted according to the environmental conditions, electric energy is fully utilized for power generation when the environmental parameters are good, and the electric energy can be stored in the energy storage system when a power grid cannot be consumed; the blade is contracted when the environment is severe, and the blade is prevented from being damaged or damaged due to impact. The invention reduces the possibility of damage of the blade, prolongs the service life of the blade and reduces the frequency of replacement of key parts; the maintenance and replacement cost of equipment is reduced, and the investment of operation and maintenance cost is reduced; the frequency of shutdown maintenance and replacement is reduced, so that the effective utilization hours of the fan is increased, the generation hours and the generated energy are increased, and the economic benefit of the wind power plant is improved; meanwhile, manual operation is reduced, personnel cost input can be reduced, and personnel safety is improved. The system realizes the zero-carbon operation in the whole process, has the characteristics of cleanness and environmental protection, and has good application prospect.
Further, the environment sensor comprises a temperature sensor, a humidity sensor and a wind speed sensor, and can carry out all-round monitoring on environment parameters.
The working method of the self-protection offshore wind power system with the telescopic blades, disclosed by the invention, has the advantages of high automation degree and high reliability, and can improve the safety and stability of offshore wind power operation.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic side view of the location of the base plate;
fig. 3 is a schematic structural diagram of the base plate.
In the figure: 1-1 is a blade, 1-1-1 is a bottom plate, 1-2 is a hub, 1-3 is a rotating shaft, 1-4 is a gear box, 1-5 is a generator, 1-6 is an engine room, 2-1 is an environmental sensor, 2-2 is a control system, 3-1 is a motor, 3-2 is a rope, 3-3 is a strong spring, 4 is a supporting base, 5 is an electric energy conveying system, 5-1 is an inverter, 5-2 is a transformer, 5-3 is a cable, 6 is an energy storage system, 6-1 is an energy storage battery, and 6-2 is a relay.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings, which are included to illustrate and not to limit the invention:
fig. 1 shows a self-protection offshore wind power system with retractable blades according to the present invention, which mainly comprises six parts, namely an offshore wind power generation system, a sensing control system, a retractable power system, a supporting base system 4, an electric energy transmission system 5 and an energy storage system 6.
Specifically, the offshore wind power generation subsystem mainly comprises a blade 1-1, a hub 1-2, a rotating shaft 1-3, a gear box 1-4, a generator 1-5 and a cabin 1-6. Wherein the shaft 1-3, the gearbox 1-4 and the generator 1-5 are mounted in the nacelle 1-6. The hub 1-2 is connected with the blade 1-1, the two ends of the rotating shaft 1-3 are connected with the hub 1-2 and the gear box 1-4, and the gear box 1-4 is connected with the generator 1-5. When the marine wind power generation device works, the blade 1-1 is blown by marine wind power to rotate, the rotating mechanical energy of the blade 1-1 is transmitted to a rotating shaft at the front end of the generator 1-5 through the rotating shaft 1-3 and the gear box 1-4, so that the generator 1-5 is driven to generate power, and the generated power can be conveyed outwards through a cable 5-3 connected with the generator 1-5.
The structure of the blade 1-1 consists of N sections (N is more than or equal to 10), and each section belongs to a layer-by-layer nested structure. The outer diameter of the bottom of each section is slightly larger than the inner diameter of one layer of the outer surface, so that the inner layer blade section can be clamped in the outer layer blade section in the fully extended state of each section, and the whole body is in a continuous whole body in the process of extension.
As shown in fig. 2 and 3, at the bottom of each segment there is a ring of inwardly projecting annular base plates 1-1-1, in the retracted condition, to which the upper blade segments are seated.
The sensing control system comprises an environmental sensor 2-1 and a control system 2-2. The environment sensor 2-1 includes a temperature sensor, a humidity sensor, a wind speed sensor, and the like. The control system 2-2 is used for receiving signals of the environment sensor 2-1, judging according to control logics input by an operator before, and sending starting or stopping signals to the motor 3-1 by the energy storage system 6 when needed.
The telescopic power system comprises a motor 3-1, a rope 3-2 and a strong spring 3-3 which are all arranged inside each blade 1-1. One end of the rope 3-2 is fixedly connected with an output rotating shaft of the motor 3-1, and the other end is fixedly connected with the top end inside the blade 1-1. The strong spring 3-3 is arranged at the geometric center of the inside of the blade 1-1, one end of the strong spring is fixedly connected with the top end of the inside of the blade 1-1, the other end of the strong spring is arranged on the hub 1-2, and the strong spring is in a compressed state under any condition that the blade 1-1 stretches, so that elastic potential energy is provided for the stretching of the blade 1-1.
In another embodiment of the invention, the telescopic power system can adopt a combination mode of a hydraulic cylinder and a multi-stage hydraulic rod to fix the hydraulic cylinder in the hub, two ends of the multi-stage hydraulic rod are respectively and fixedly connected with the hydraulic cylinder and the blade section at the top end inside the blade 1-1, the hydraulic cylinder is connected with the motor 3-1, and the telescopic action of the blade 1-1 is realized through the telescopic action of the multi-stage hydraulic rod.
The supporting foundation system 4 is a single pile type foundation structure fixed on the seabed.
The power transmission system 5 includes an inverter 5-1, a transformer 5-2, and a cable 5-3. The cable 5-3 transmits the electric energy output by the offshore wind power generation system after being integrated by the inverter 5-1 and the transformer 5-2 to the shore power grid through the submarine cable.
The energy storage system 6 comprises an energy storage battery 6-1 and a relay 6-2 and is used for storing surplus electricity which is generated by the wind power generation subsystem and cannot be used for surfing the Internet. One end of the energy storage battery 6-1 is connected with the motor 3-1 and can provide electric energy for the motor 3-1 at any time. The other end is connected with a relay 6-2, and the relay 6-2 is arranged between the generator 1-5 and the inverter 5-1 and used for switching a circuit and supplying power to the energy storage battery 6-1 at any time.
The working principle of the invention is as follows:
blade extension process (normal operation): the environmental sensor 2-1 sends a good signal of the measured surrounding environment to the control system 2-2, the control system 2-2 judges that the fan is in a normal working state, and does not send a power supply (working) instruction to the energy storage battery 6-1, and at the moment, the motor 3-1 is in a free state, and can automatically extend upwards due to the fact that the strong spring 3-3 is in a compressed state. Because the outer diameter of one section of the inside of the N blade sections is slightly larger than the inner diameter of one section of the outside, the N blade sections can be extended, one section of the N blade sections is exposed and unfolded along with the strong springs 3-3, and the inner layer blade section can be clamped in the outer layer blade section until the N blade sections are completely opened. In the process, the rope 3-2 is matched with elongation, the motor 3-1 is not powered, and the rope 3-2 is matched with elongation to idle. After the N blade sections are extended, the N blade sections start to rotate to generate power under the blowing of wind.
Blade retraction process (off state): the environment sensor 2-1 detects that the surrounding environment is severe, the blade 1-1 needs to be contracted, and the fan does not work any more. At the moment, the signal is transmitted to a control system 2-2, the control system 2-2 sends an instruction of outputting electric energy to an energy storage battery 6-1 to a motor 3-1, so that the motor 3-1 is driven to rotate, a rope 3-2 is driven to contract N sections of blade sections, and the blade sections are located on an outer annular bottom plate 1-1-1 one by one from the uppermost section, finally the blade 1-1 is contracted from the outermost end layer by layer, and a strong spring 3-3 is compressed for the same distance in the process. At this time, all the blades 1-1 are contracted, thereby realizing the self-protection function of the blades 1-1.
A charging mode: when the electricity generated by the offshore wind power generation system cannot be received and consumed by a power grid, remote personnel operate the relay 6-2 to realize switching, and the electricity generated by the fan can charge the energy storage battery 6-1 at any time, so that any electric energy power source of the system is clean energy, and zero-carbon operation is realized.
When the weather becomes good, the first step of the extending process of the blades 1-1 is repeated, and the fan can continue to generate power.
The above description is only a part of the embodiments of the present invention, and although some terms are used in the present invention, the possibility of using other terms is not excluded. These terms are used merely for convenience in describing and explaining the nature of the invention and are to be construed as any additional limitation which is not in accordance with the spirit of the invention. The foregoing is merely an illustration of the present invention for the purpose of providing an easy understanding and is not intended to limit the present invention to the particular embodiments disclosed herein, and any technical extensions or innovations made herein are protected by the present invention.

Claims (10)

1. A self-protection offshore wind power system with telescopic blades is characterized by comprising blades (1-1), a hub (1-2), a transmission system, a generator (1-5), a cabin (1-6), an environmental sensor (2-1), a control system (2-2), a motor (3-1), a telescopic operating mechanism, a support base (4), an electric energy transmission system (5) and an energy storage system (6);
the engine rooms (1-6) are connected with a supporting foundation (4), and the supporting foundation (4) is fixed on the seabed; the transmission system, the generators (1-5), the control system (2-2) and the energy storage system (6) are arranged in the engine room (1-6), the blades (1-1) are connected with the hubs (1-2), and the hubs (1-2) are connected with the generators (1-5) through the transmission system; the motor (3-1) is arranged in the hub (1-2), and the motor (3-1) is connected with the blade (1-1) through the telescopic operating mechanism; the blade (1-1) comprises a plurality of blade sections which are sequentially nested, and the blade sections can be stretched and contracted through the stretching operating mechanism; the environment sensor (2-1) is arranged in the external environment, and the environment sensor (2-1) is connected with the control system (2-2); the generator (1-5) is connected with the electric energy transmission system (5), the energy storage system (6) is respectively connected with the motor (3-1) and the electric energy transmission system (5), and the electric energy transmission system (5) is connected to a power grid.
2. The self-protection offshore wind power system with retractable blades according to claim 1, wherein the transmission system comprises a rotating shaft (1-3) and a gearbox (1-4), the hub (1-2) is connected with the rotating shaft (1-3), the rotating shaft (1-3) is connected with the gearbox (1-4), and the gearbox (1-4) is connected with the generator (1-5).
3. The self-protected offshore wind power system with telescoping blades according to claim 2, characterized in that the environmental sensor (2-1) is provided at the front side of the nacelle (1-6).
4. The self-protection offshore wind power system with retractable blades according to claim 1, characterized in that the environmental sensors (2-1) comprise a temperature sensor, a humidity sensor and a wind speed sensor, and the temperature sensor, the humidity sensor and the wind speed sensor are respectively connected with the control system (2-2).
5. The self-protection offshore wind power system with retractable blades according to claim 1, wherein the retractable actuator comprises a rope (3-2) and a strong spring (3-3), one end of the rope (3-2) is fixedly connected with the output shaft of the motor (3-1), and the other end of the rope penetrates through the insides of all the blade segments and is fixedly connected with the topmost blade segment; the strong spring (3-3) penetrates through the geometric center of the blade (1-1), one end of the strong spring is fixedly connected with the topmost blade section, the other end of the strong spring is fixedly connected with the hub (1-2), and the strong spring (3-3) is in a compressed state.
6. The self-protecting offshore wind power system with telescopic blades according to claim 1, characterized in that the supporting foundation (4) is a mono-pile foundation.
7. The self-protection offshore wind power system with retractable blades according to claim 1, characterized in that the power transmission system (5) comprises an inverter (5-1) and a transformer (5-2), the generator (1-5) is connected with the inverter (5-1), the inverter (5-1) is connected with the transformer (5-2), and the transformer (5-2) is connected to the grid through a cable (5-3).
8. The self-protection offshore wind power system with retractable blades according to claim 7, characterized in that the energy storage system (6) comprises an energy storage battery (6-1) and a relay (6-2), one end of the energy storage battery (6-1) is connected with the motor (3-1), the other end is connected with the relay (6-2), and the relay (6-2) is installed between the generator (1-5) and the inverter (5-1).
9. The self-protection offshore wind power system with retractable blades according to claim 1, wherein the number of blade segments is greater than or equal to 10, the outer diameter of the bottom of each blade segment is greater than the inner diameter of the adjacent outer blade segment, the bottom of the blade segment is provided with an inwardly protruding annular bottom plate (1-1-1), and the bottom plate (1-1-1) is used for supporting the adjacent blade segment when the blade (1-1) is retracted.
10. The method of operating a self-contained offshore wind power system with retractable blades according to any of claims 1 to 9, comprising:
the environment sensor (2-1) monitors external environment parameters and sends signals to the control system (2-2), when the external environment parameters are normal, the energy storage system (6) does not supply power, the motor (3-1) does not work, the blades (1-1) rotate to generate power in an extended state, and the electric energy generated by the generator (1-5) is transmitted to a power grid through the electric energy transmission system (5); when the generated electric energy cannot be received and consumed by the power grid, the energy storage system (6) stores the electric energy;
when external environmental parameters are not beneficial to normal work of the fan, the control system (2-2) sends an instruction, the energy storage system (6) supplies power to the motor (3-1), and the rotating shaft of the motor (3-1) rotates to enable the telescopic operating mechanism to drive the blades (1-1) to contract; when the external environment parameters are recovered to be normal, the control system (2-2) sends an instruction, the energy storage system (6) does not supply power to the motor (3-1), the rotating shaft of the motor (3-1) is in an idle state, the telescopic operating mechanism drives the blade (1-1) to extend, and the fan restarts to generate power.
CN202111389853.5A 2021-11-22 2021-11-22 Self-protection offshore wind power system with telescopic blades and working method thereof Pending CN114046223A (en)

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