CN113915066A - Self-protection wind power system with folding and heating blades and working method thereof - Google Patents

Self-protection wind power system with folding and heating blades and working method thereof Download PDF

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Publication number
CN113915066A
CN113915066A CN202111387586.8A CN202111387586A CN113915066A CN 113915066 A CN113915066 A CN 113915066A CN 202111387586 A CN202111387586 A CN 202111387586A CN 113915066 A CN113915066 A CN 113915066A
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CN
China
Prior art keywords
folding
blade
blades
energy storage
heating
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Granted
Application number
CN202111387586.8A
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Chinese (zh)
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CN113915066B (en
Inventor
李腾
程瑜
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Huaneng Jilin Power Generation Co ltd
Huaneng Clean Energy Research Institute
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Huaneng Clean Energy Research Institute
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Priority to CN202111387586.8A priority Critical patent/CN113915066B/en
Publication of CN113915066A publication Critical patent/CN113915066A/en
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Publication of CN113915066B publication Critical patent/CN113915066B/en
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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
    • 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
    • F03D9/20—Wind motors characterised by the driven apparatus
    • F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
    • F03D9/255—Wind motors characterised by the driven apparatus the apparatus being an electrical generator connected to electrical distribution networks; Arrangements therefor
    • 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
    • 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
    • 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
    • F03D7/0264—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor for stopping; controlling in emergency situations
    • F03D7/0268—Parking or storm protection
    • 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
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • F03D80/60—Cooling or heating of 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
    • 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
    • F05B2270/303—Temperature
    • 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
    • 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
    • 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)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Wind Motors (AREA)

Abstract

The invention discloses a self-protection wind power system with folding and heating blades and a working method thereof, and belongs to the technical field of wind power generation. 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 blade comprises a plurality of blade sections which are sequentially connected through a folding operating mechanism, and the blade sections can be folded and unfolded through the folding operating mechanism; an electrical heating system is arranged inside each blade section; 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 folding operating mechanism, the electric heating system, the control system and the electric energy transmission system, and the electric energy transmission system is connected to a power grid. The intelligent blade folding device can intelligently analyze the current environment condition, and can quickly fold the blade when an extreme environment occurs, so that the blade is prevented from being damaged or destroyed due to impact; while heating the blades for deicing.

Description

Self-protection wind power system with folding and heating blades and working method thereof
Technical Field
The invention belongs to the technical field of wind power generation, and particularly relates to a self-protection wind power system with folding and heating blades and a working method thereof.
Background
Wind power generation is a power generation technology that uses wind energy to drive a power generation machine so as to convert the wind energy into electric energy. At present, the wind energy is a new pollution-free and renewable energy source which is seriously lack of resources and has huge energy gaps, and is favored and valued by countries in the world. The research on new energy in China is moving forward with the change of technology, high-speed development is realized in each new energy field, and wind power generation always occupies an important position as a main mode of the new energy field.
However, there are some problems in the practical application of wind power. Wind field environment is generally severe, blades are exposed outside all the year round and are easily damaged by extreme weather such as strong wind and freezing, the protection of the blades becomes a topic concerned in recent years, and the problem of improving the protection capability of the blades is a problem to be solved urgently at present.
Disclosure of Invention
In order to solve the above problems, the present invention provides a self-protection wind power system with a folding and heating blade and a working method thereof, which can intelligently judge and analyze the current environmental conditions, and when an extreme environment occurs, the blade is quickly folded, so as to avoid damage or damage of the blade caused by impact; while heating the blades for deicing.
The invention is realized by the following technical scheme:
the invention discloses a self-protection wind power system with folding and heating blades and a working method thereof, wherein the self-protection wind power system comprises blades, a hub, a transmission system, a generator, a cabin, an environmental sensor, a control system, an electric heating system, a folding operating mechanism, a supporting base, an electric energy transmission system and an energy storage system;
the engine room is connected with a supporting foundation, and the supporting foundation is fixed on the foundation; 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 blade comprises a plurality of blade sections which are sequentially connected through a folding operating mechanism, and the blade sections can be folded and unfolded through the folding operating mechanism; an electrical heating system is arranged inside each blade section; 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 folding operating mechanism, the electric heating system, the control system 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 folding operating mechanism comprises a plurality of motors and folding rotating shafts, adjacent blade segments are connected through the folding rotating shafts, the motors are installed inside the folding rotating shafts, and all the motors are connected to the energy storage system.
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 electric heating system comprises an electric heating wire, a socket and a plug; the electric heating wires are arranged in each blade section, the socket is arranged on the surface of the blade section at the bottommost end of the blade root, the plug is arranged on the surface of the blade section opposite to the socket after the blade is folded, the electric heating wires are connected with the plug, and the socket is connected with the energy storage system.
Further preferably, an electronic control lock catch is arranged inside the socket and used for locking the plug.
The invention discloses a working method of the self-protection wind power system with the folding and heating 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 blades rotate to generate electricity 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, and the energy storage system supplies power to the folding operating mechanism to drive all blade sections of the blades to be folded in sequence; the energy storage system supplies power to the electric heating system to heat the blades so as to prevent the blades from being frozen;
when the external environment parameters are recovered to be normal, the control system sends out an instruction, the energy storage system supplies power to the folding operating mechanism to drive all the blade sections of the blades to be sequentially unfolded, 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 wind power system with the folding and heating blades, 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 folded and unfolded 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 blades are folded in severe environment, so that the blades are prevented from being damaged or damaged due to impact; meanwhile, the electric heating system is started to heat the blades, so that the blades are prevented from being influenced by severe weather, and the blades can be quickly put into use when the weather is good. The blade with a large area can be compressed and folded, a heating function is provided, the possibility of damage of the blade is reduced, the service life of the blade is prolonged, the frequency of replacement of key parts is reduced, the maintenance and replacement cost of equipment is reduced, and the operation and maintenance cost investment is reduced, so that the number of hours of effective utilization of a fan is increased, the number of hours of power generation and the amount of generated power are increased, and the economic benefit of a 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.
Further, the socket is internally provided with the electric control lock catch, the plug can be stably locked when the plug is inserted, the blade is automatically opened when the blade is unfolded, and the automation degree is high.
The working method of the self-protection wind power system with the folding and heating blades, disclosed by the invention, has the advantages of high automation degree and high reliability, and can improve the safety and stability of the operation of the wind power system.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic structural diagram of the socket, the plug and the electrically controlled latch according to the present invention.
In the figure: 1-1 is a blade, 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 a cabin, 2-1 is an environmental sensor, 2-2 is a control system, 3-1 is a motor, 3-2 is a folding rotating shaft, 3-3 is an electric heating wire, 3-4-1 is a socket, 3-4-2 is a plug, 3-4-3 is an electric control lock catch, 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 six major parts of a self-protection wind power system with folding and heating blades, a wind power generation subsystem, a sensing control system, a power and heat energy system, a supporting base 4, an electric energy transmission system 5 and an energy storage system 6.
Specifically, the 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, 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 wind power generator works, the wind power blows the blades 1-1 to rotate, the rotating mechanical energy of the blades 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 is transmitted 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 is folded or unfolded through a folding operating mechanism. When the sections are in the fully extended state, the whole blade is formed.
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 power thermal energy system when needed.
Referring to the attached drawings 1 and 2, the power thermal energy system comprises a motor 3-1, a folding rotating shaft 3-2, an electric heating wire 3-3, a socket 3-4-1 for supplying power, a plug 3-4-2 and the like. The motor 3-1 and the folding rotating shaft 3-2 are matched and used in a set of N-1 pairs. The folding rotating shaft 3-2 is connected with two adjacent blade sections, the motor 3-1 is arranged in the folding rotating shaft 3-2, the starting and stopping of the folding rotating shaft 3-2 are controlled, and the folding, folding and unfolding of the blades 1-1 are completed. The electrical energy for the electrical machine 3-1 is provided by an energy storage system 6. The electric heating wire 3-3 is arranged in each blade section, the electric heating wire 3-3 passes through the folding rotating shaft 3-2, in addition, a power socket 3-4-1 and a plug 3-4-2 are respectively arranged on the front surface of the blade section at the bottommost section and the back surface of the blade section 3 at the upper third section, and the power socket 3-4-1 and the plug 3-4-2 can be inserted in a butt joint mode after being completely folded. The socket 3-4-1 is designed as an embedded structure and is connected with the energy storage system 6 to provide power for the energy storage system. The socket 3-4-1 is internally provided with an electric control lock catch 3-4-3, and when the plug 3-4-2 is completely folded and finally inserted, the electric control lock catch 3-4-3 can be automatically locked. When the energy storage system 6 supplies power to the plug connector, the lock catch is opened, and the plug 3-4-2 is pulled out along with the reverse folding and stretching actions.
The supporting foundation system 4 is a single-pile foundation structure, is used for fixing the whole set of power generation device and is connected with the foundation.
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 wind power generation subsystem after being integrated by the inverter 5-1 and the transformer 5-2 to the shore power grid through the cable 5-3.
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. The number of the output ends of the energy storage batteries 6-1 is 3, and the energy storage batteries are respectively connected with the motor 3-1, the socket 3-4-1 and the electric control lock catch 3-4-3 and can provide electric energy for the motor 3-1, the socket 3-4-1 and the electric control lock catch 3-4-3 at any time. One input end is connected with the 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 other input end is connected with the control system 2-2 and is controlled by a control instruction given by a remote person.
The working principle of the invention is as follows:
environmentally friendly blade extension process: the environmental sensor 2-1 sends a detected good signal of the surrounding environment to the control system 2-2, the control system 2-2 judges that the fan can work and sends a power supply instruction to the energy storage battery 6-1, the energy storage battery 6-1 firstly provides electric energy for the electric control lock catch 3-4-3 to enable the electric control lock catch to be in an open state, then the folding motor 3-1 is sequentially supplied with power from bottom to top to enable the folding motor to rotate forwards to drive all the blade sections to be opened until all the blade sections are opened, and at the moment, the N blade sections start to rotate to generate power under the blowing of wind after being extended.
When the blade folding process is in a severe environment (non-working state): when the surrounding environment is severe, the blades are required to be folded and contracted, and the fan does not work any more. The environmental sensor 2-1 measures environmental data and transmits the environmental data to the control system 2-2, the control system 2-2 sends a reverse rotation instruction to the energy storage battery 6-1, the energy storage battery 6-1 sequentially provides electric energy to the motor 3-1 from top to bottom to enable the motor to rotate, and the motor 3-1 sequentially rotates reversely to drive the folding rotating shaft 3-2 to fold and shrink, so that the blade sections are driven to fold and shrink layer by layer. And finally, inserting the plug 3-4-2 at the back of the blade section 3 of the third section into the socket 3-4-1 embedded in the blade section at the bottommost section, and simultaneously supplying power to the socket 3-4-1 by the energy storage battery 6-1, so that the power supply and the heating of the electric heating wire 3-3 can be realized, the internal part of the blade 1-1 is heated to prevent icing, and the self-protection effect of the blade 1-1 is achieved.
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 wind power system with folding and heating 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), an electric heating system, a folding 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 a foundation; 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 blade (1-1) comprises a plurality of blade sections which are sequentially connected through a folding operating mechanism, and the blade sections can be folded and unfolded through the folding operating mechanism; an electrical heating system is arranged inside each blade section; 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 power generators (1-5) are connected with an electric energy transmission system (5), the energy storage system (6) is respectively connected with the folding operating mechanism, the electric heating system, the control system and the electric energy transmission system (5), and the electric energy transmission system (5) is connected to a power grid.
2. The self-protection wind power system with folding and heating blades as claimed in claim 1, wherein the transmission system comprises a rotating shaft (1-3) and a gear box (1-4), the hub (1-2) is connected with the rotating shaft (1-3), the rotating shaft (1-3) is connected with the gear box (1-4), and the gear box (1-4) is connected with the generator (1-5).
3. The self-protection wind power system with folding and heating blades as claimed in claim 2, characterized in that the environmental sensor (2-1) is arranged at the front side of the nacelle (1-6).
4. The self-protection wind power system with folding and heating blades as claimed in claim 1, wherein the environmental sensor (2-1) 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 (2-2).
5. The self-protection wind power system with folding and heating blades as claimed in claim 1, wherein the folding operating mechanism comprises a plurality of motors (3-1) and folding rotating shafts (3-2), adjacent blade segments are connected through the folding rotating shafts (3-2), the motors (3-1) are installed inside the folding rotating shafts (3-2), and all the motors (3-1) are connected to the energy storage system (6).
6. The self-protection wind power system with folding and heating blades as claimed in claim 1, wherein 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 power grid through a cable (5-3).
7. The self-protection wind power system with the folding and heating blade is 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 of the energy storage battery is connected with the relay (6-2), and the relay (6-2) is installed between the generator (1-5) and the inverter (5-1).
8. The self-protection wind power system with folding and heating blades as claimed in claim 1, characterized in that the electric heating system comprises electric heating wires (3-3), sockets (3-4-1) and plugs (3-4-2); an electric heating wire (3-3) is arranged in each blade section, a socket (3-4-1) is arranged on the surface of the blade section at the bottommost end of the blade root, a plug (3-4-2) is arranged on the surface of the blade section opposite to the socket (3-4-1) after the blade (1-1) is folded, the electric heating wire (3-3) is connected with the plug (3-4-2), and the socket (3-4-1) is connected with an energy storage system (6).
9. The self-protection wind power system with folding and heating blades as claimed in claim 8, wherein an electrically controlled latch (3-4-3) is arranged inside the socket (3-4-1), and the electrically controlled latch (3-4-3) is used for locking the plug (3-4-2).
10. The working method of the self-protection wind power system with the folding and heating blade as claimed in any one 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 blades (1-1) rotate to generate electricity 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 folding operating mechanism, and all blade sections of the blades (1-1) are driven to be folded in sequence; the energy storage system (6) supplies power to the electric heating system to heat the blades (1-1) so as to prevent icing;
when the external environment parameters are recovered to be normal, the control system (2-2) sends an instruction, the energy storage system (6) supplies power to the folding operating mechanism to drive all the blade sections of the blades (1-1) to be sequentially unfolded, and the fan restarts to generate power.
CN202111387586.8A 2021-11-22 2021-11-22 Self-protection wind power system with folding and heating blades and working method thereof Active CN113915066B (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103016276A (en) * 2012-12-07 2013-04-03 清华大学 Two-sectional inclined folding blade device for large wind-driven generator
CN203476612U (en) * 2013-08-26 2014-03-12 陆中源 Horizontal axis type wind turbine blade capable of being changed in shape
CN104421108A (en) * 2013-08-26 2015-03-18 陆中源 Horizontal shaft type wind turbine deformation blades
CN205805825U (en) * 2016-06-16 2016-12-14 西安交通大学 A kind of wind power generation blade of three sections of parallel folds
CN108035842A (en) * 2017-11-27 2018-05-15 国网新源张家口风光储示范电站有限公司 A kind of novel wind power flabellum and method of work
CN113294302A (en) * 2021-07-05 2021-08-24 中国华能集团清洁能源技术研究院有限公司 Anti-freezing device and method for blades of wind driven generator

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103016276A (en) * 2012-12-07 2013-04-03 清华大学 Two-sectional inclined folding blade device for large wind-driven generator
CN203476612U (en) * 2013-08-26 2014-03-12 陆中源 Horizontal axis type wind turbine blade capable of being changed in shape
CN104421108A (en) * 2013-08-26 2015-03-18 陆中源 Horizontal shaft type wind turbine deformation blades
CN205805825U (en) * 2016-06-16 2016-12-14 西安交通大学 A kind of wind power generation blade of three sections of parallel folds
CN108035842A (en) * 2017-11-27 2018-05-15 国网新源张家口风光储示范电站有限公司 A kind of novel wind power flabellum and method of work
CN113294302A (en) * 2021-07-05 2021-08-24 中国华能集团清洁能源技术研究院有限公司 Anti-freezing device and method for blades of wind driven generator

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