CN113969864A - Wind turbine generator system main control system - Google Patents

Wind turbine generator system main control system Download PDF

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Publication number
CN113969864A
CN113969864A CN202111150893.4A CN202111150893A CN113969864A CN 113969864 A CN113969864 A CN 113969864A CN 202111150893 A CN202111150893 A CN 202111150893A CN 113969864 A CN113969864 A CN 113969864A
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CN
China
Prior art keywords
wind
wind turbine
hole
rotating
turbine generator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202111150893.4A
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Chinese (zh)
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CN113969864B (en
Inventor
曹久亚
徐剑晖
司书辉
连军方
鲁渌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huadian International Ningxia New Energy Power Generation Co ltd
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Huadian International Ningxia New Energy Power Generation Co ltd
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Application filed by Huadian International Ningxia New Energy Power Generation Co ltd filed Critical Huadian International Ningxia New Energy Power Generation Co ltd
Priority to CN202111150893.4A priority Critical patent/CN113969864B/en
Publication of CN113969864A publication Critical patent/CN113969864A/en
Application granted granted Critical
Publication of CN113969864B publication Critical patent/CN113969864B/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
    • 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
    • F03D7/0204—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor for orientation in relation to wind direction
    • 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
    • F03D7/0224—Adjusting blade pitch
    • 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
    • F03D7/0284—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor controlling wind motor output power in relation to the state of the electric grid
    • 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
    • F03D7/04—Automatic control; Regulation
    • F03D7/042—Automatic control; Regulation by means of an electrical or electronic controller
    • F03D7/047—Automatic control; Regulation by means of an electrical or electronic controller characterised by the controller architecture, e.g. multiple processors or data communications
    • 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
    • F03D80/80—Arrangement of components within nacelles or towers
    • F03D80/82—Arrangement of components within nacelles or towers of electrical components
    • F03D80/85—Cabling
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/381—Dispersed generators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
    • H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/20—The dispersed energy generation being of renewable origin
    • H02J2300/28—The renewable source being wind energy
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P2101/00—Special adaptation of control arrangements for generators
    • H02P2101/15—Special adaptation of control arrangements for generators for wind-driven 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/30—Wind power
    • 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
    • Y02E10/76—Power conversion electric or electronic aspects

Abstract

The invention discloses a main control system of a wind turbine generator, which comprises a wind turbine generator, a rectifier, a first control module and a second control module, wherein the wind turbine generator comprises a wind driven generator and a rectifier connected with the wind driven generator; the control unit comprises a control device, and the rectifier is connected with the control device; the wind turbine generator set is provided with at least two groups, three-phase alternating currents generated by at least two wind driven generators are respectively converted into direct currents by respective rectifiers, and the direct currents are connected in parallel in the control device and are converted into voltage pulse direct currents; compared with a large-scale fan unit, the medium-power and low-power grid-connected wind generating set adopted by the invention has lower requirements on wind resource conditions, and can be constructed in an area with the local annual average wind speed of more than 4.5 m/s; through the arrangement of the variable pitch structure, when the adjustment is carried out, the ring outside the shell is adjusted only manually or electrically.

Description

Wind turbine generator system main control system
Technical Field
The invention relates to the field of wind turbine generator control, in particular to a wind turbine generator main control system.
Background
At present, wind power generation systems at home and abroad are roughly divided into two categories: a household or small group wind power generation system which mainly comprises medium and small power fans and operates independently is disclosed. The method is mainly used for daily life electricity utilization of residents in a non-electricity area. The system is not related to a power grid and operates independently. Such a type is called an off-grid wind turbine.
The other type is that a high-power wind generating set is used as a main machine type, a single wind generator independently generates electric energy, then the electric energy is merged into a power grid by grid-connected equipment to provide electric power for the power grid, and then the power grid supplies power to users. The type is called a grid-connected wind generating set.
At present, the basic type of the grid-connected wind driven generator at home and abroad is that a single fan is independently connected into a power grid by respective grid-connected equipment. At present, the machine type that a plurality of wind driven generators are controlled by the same grid-connected equipment after being connected in parallel does not exist.
In addition, aiming at the pitch regulation of a single wind driven generator, the regulation in the prior art is more complicated, and the regulation quantity is not easy to control.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments, and in this section as well as in the abstract and the title of the invention of this application some simplifications or omissions may be made to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions are not intended to limit the scope of the invention.
The present invention has been made keeping in mind the above problems occurring in the prior art and/or the problems occurring in the prior art.
Therefore, the technical problem to be solved by the invention is that at present, no machine type which is connected with the grid by the same grid-connected equipment after a plurality of wind driven generators are connected in parallel and the pitch regulation of a single wind driven generator are controlled, and the regulation in the prior art is complicated and the regulation quantity is not easy to control.
In order to solve the technical problems, the invention provides the following technical scheme: a main control system of a wind turbine generator comprises the wind turbine generator, a rectifier and a control module, wherein the wind turbine generator comprises a wind driven generator and a rectifier connected with the wind driven generator;
the control unit comprises a control device, and the rectifier is connected with the control device;
the wind turbine generator set is at least provided with two groups, three-phase alternating currents generated by at least two wind driven generators are respectively converted into direct currents by respective rectifiers, and the direct currents are connected in parallel in the control device and are converted into voltage pulse direct currents.
As a preferred scheme of the wind turbine main control system of the present invention, wherein: the control device is connected with a grid-connected inverter, and the voltage ripple direct current is subjected to maximum power tracking and voltage control by the control device and then is transmitted to the grid-connected inverter.
As a preferred scheme of the wind turbine main control system of the present invention, wherein: the control device comprises a programmable controller and a load release device, wherein the programmable controller is connected with the load release device through a switch circuit.
As a preferred scheme of the wind turbine main control system of the present invention, wherein: the control device instructs the grid-connected inverter to generate three-phase alternating current with the same frequency and the same phase as the power grid according to the magnitude of the instantaneous power transmitted to the grid-connected inverter and the running state of the power grid, and transmits the three-phase alternating current to the power grid.
As a preferred scheme of the wind turbine main control system of the present invention, wherein: the control unit also comprises a wind speed acquisition module, an angle acquisition module, a comparator first controller and a comparator second controller;
the wind driven generator is connected with a wind speed acquisition module, the wind speed acquisition module transmits the acquired hub wind speed information to the comparator, the wind speed information is compared with a wind speed threshold preset in the comparator, and a comparison result is transmitted to the first controller; the first controller controls the wind driven generator cabin to rotate in a yawing mode according to the received wind speed comparison result; the angle acquisition module transmits the acquired twisted cable angle information in the tower drum of the wind driven generator to the comparator, compares the twisted cable angle information with a twisted cable angle threshold preset in the comparator, transmits a comparison result to the second controller, and the second controller controls the twisted cable to be untwisted according to the received angle comparison result.
As a preferred scheme of the wind turbine main control system of the present invention, wherein: the wind driven generator comprises a supporting unit and a rotating unit, wherein the supporting unit comprises a supporting rod and a power generation assembly arranged above the supporting rod, and the power generation assembly comprises an input shaft; the rotating unit comprises a rotating column and a blade connected with the rotating column, the rotating column is provided with a first through hole which penetrates through the rotating column, one end of the first through hole is fixedly connected with the input shaft, and the other end of the first through hole is provided with a sealing cover; the rotating column is uniformly provided with three second through holes along the circumference, the end part of each blade comprises a rotating shaft, the rotating shafts are embedded into the second through holes, and the number of the blades is three; and a limiting ring groove is formed in the second through hole, a limiting shaft shoulder is arranged on the rotating shaft, and the limiting shaft shoulder is embedded into the limiting ring groove.
As a preferred scheme of the wind turbine main control system of the present invention, wherein: a partition plate is arranged in the first through hole, first long grooves along the radial direction are arranged on the partition plate, and three first long grooves are uniformly distributed along the circumference; a sliding block is arranged in the first through hole, the sliding block is provided with a third through hole, the rotating shaft penetrates through the third through hole, the number of the sliding blocks is consistent with that of the blades, a transmission shaft is arranged on the sliding block, and the transmission shaft penetrates through the first long groove; the rotating shaft is provided with a first spiral groove, the first spiral groove extends along a spiral line, a first round table is arranged in the third through hole, and the first round table is embedded into the first spiral groove.
As a preferred scheme of the wind turbine main control system of the present invention, wherein: one side of the sliding block, which is provided with the transmission shaft, is contacted with the side surface of the partition board; a limiting plate is further arranged in the first through hole, the limiting plate and the partition plate are respectively positioned on two sides of the sliding block, one side face of the sliding block is in contact with the surface of the limiting plate, a limiting boss is arranged on one side of the sliding block in contact with the limiting plate, a second long groove corresponding to the limiting boss is arranged on the limiting plate, and the limiting boss is embedded into the second long groove; the partition plate is provided with a central shaft, a rotating disc is sleeved on the central shaft, the rotating disc is provided with a fourth through hole, and the central shaft penetrates through the fourth through hole and is connected with a limiting ring; a third long groove is formed in the rotating disc, the transmission shaft penetrates through the first long groove and then is embedded into the third long groove, the third long groove comprises a first end A and a second end B, an extension line of a connecting line of the first end A and the second end B does not pass through the circle center of the rotating disc, and the distance from the third long groove to the circle center of the rotating disc is increased from the first end A to the second end B; the central shaft is provided with a penetrating oil filling hole.
As a preferred scheme of the wind turbine main control system of the present invention, wherein: the edge of the rotating disc is connected with a rotating cylinder, a second spiral groove is formed in the side wall of the rotating cylinder, a fourth long groove penetrating through the side wall of the rotating column is formed in the side wall of the rotating column, a pin shaft is arranged in the fourth long groove, and the pin shaft penetrates through the second spiral groove.
As a preferred scheme of the wind turbine main control system of the present invention, wherein: an adjusting ring is sleeved outside the rotating column, an annular groove is formed in the inner wall of the adjusting ring, and the end part of the pin shaft is embedded into the annular groove; the outside and the regulation of rotating the post circle complex part is provided with the external screw thread, the regulation circle inner wall is provided with the internal thread, external screw thread and internal thread fit connection.
The invention has the beneficial effects that: compared with a large-scale fan unit, the medium-power and low-power grid-connected wind generating set adopted by the invention has lower requirements on wind resource conditions, and can be constructed in an area with the local annual average wind speed of more than 4.5 m/s; through the arrangement of the variable pitch structure, when the adjustment is carried out, the ring outside the shell is adjusted only manually or electrically.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:
fig. 1 is a schematic diagram of a main control system of a wind turbine generator according to an embodiment of the present invention;
fig. 2 is a schematic view illustrating control of a plurality of wind turbine generators in a wind turbine generator master control system according to an embodiment of the present invention;
FIG. 3 is a schematic view of yaw control in a main control system of a wind turbine generator according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a wind turbine generator in a main control system of a wind turbine generator according to an embodiment of the present invention;
fig. 5 is a schematic cross-sectional structural view of a wind turbine generator in the main control system of the wind turbine generator according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a rotating unit in a main control system of a wind turbine generator according to an embodiment of the present invention;
fig. 7 is a schematic diagram of an explosion structure of a rotating unit in a main control system of a wind turbine generator according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a rotating disc of a rotating unit in a main control system of a wind turbine generator according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a section of a rotating unit in a main control system of a wind turbine generator according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Next, the present invention will be described in detail with reference to the drawings, wherein the cross-sectional views illustrating the structure of the device are not enlarged partially according to the general scale for convenience of illustration when describing the embodiments of the present invention, and the drawings are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Example 1
Referring to fig. 1 to 3, the present embodiment provides a wind turbine main control system, which includes a wind turbine 100, including a wind turbine 101 and a rectifier 102 connected to the wind turbine 101; the control unit 200 comprises a control device 201, and the rectifier 102 is connected with the control device 201; the three-phase alternating current generated by at least two wind power generators 101 is converted into direct current by respective rectifiers 102, and the direct currents are connected in parallel in the control device 201 to be converted into voltage pulse direct current. The control device 201 is connected to a grid-connected inverter 202, and the control device 201 performs maximum power tracking on the voltage ripple direct current and controls the voltage of the voltage ripple direct current, and then the voltage ripple direct current is transmitted to the grid-connected inverter 202. The control device 201 includes a programmable controller 201a and a load dump 201b, and the programmable controller 201a is connected to the load dump 201b via a switch circuit.
The control device 201 instructs the grid-connected inverter 202 to generate three-phase ac power having the same frequency and the same phase as the grid frequency, based on the magnitude of the instantaneous power supplied to the grid-connected inverter 202 and the operating state of the grid, and supplies the three-phase ac power to the grid 204.
Wherein, three-phase alternating current generated by the wind driven generator 101 is converted into direct current of 420V-620V by respective rectifier 102; the control device 201 controls the voltage of the voltage ripple direct current to be below DC620V, when the voltage ripple direct current exceeds DC620V, the programmable controller 201a turns on a switch circuit, and the load releaser 201b releases redundant electric quantity; the grid-connected inverter 202 generates 380V three-phase alternating current with the same frequency and phase as the power grid; the wind driven generator adopts a medium and small power three-phase rare earth permanent magnet synchronous generator. Three-phase alternating current generated by each fan is converted into direct current of 420V-620V through respective rectifiers, and then the direct current is connected in parallel in the control cabinet.
The current after the direct current parallel connection becomes direct current with voltage pulsation. And when the total voltage of the system rectified and connected in parallel is over-voltage, the circuit is conducted, and the load relief device releases redundant electric quantity, so that the direct current fluctuation voltage output by the fan and the solar cell is automatically controlled, and the direct current fluctuation voltage of the fan and the solar cell after direct current parallel connection can be kept below DC620V strictly all the time.
After the maximum power tracking analysis is carried out on the direct current of the three fans connected in parallel by the programmable controller, the obtained information is transmitted to the special grid-connected inverter. Under the main control of the programmable controller, the grid-connected inverter determines the respective phases of the output frequency, the voltage and the three-phase power of the inverter according to the input power, the instantaneous frequency of the power grid, the phase value of each phase power and the voltage value of each phase power collected by a power grid transformer, then the input direct current electric energy is converted into three-phase 380V alternating current which is completely the same as the frequency and the phase of the power grid by a conversion circuit (SPWM) of the grid-connected inverter, the three-phase 380V alternating current is connected to a power transformer, and then the three-phase alternating current is transmitted to the power grid by the power transformer.
Further, the control unit 200 further includes a wind speed collecting module 205, an angle collecting module 206, a comparator 207, a first controller 208 and a second controller 209;
the wind driven generator 101 is connected with a wind speed acquisition module 205, the wind speed acquisition module 205 transmits the acquired hub wind speed information to a comparator 207, compares the acquired hub wind speed information with a wind speed threshold preset in the comparator 207, and transmits a comparison result to a first controller 208; the first controller controls the cabin of the wind driven generator 101 to yaw and rotate according to the received wind speed comparison result, so that the plane of a wind wheel is perpendicular to the wind direction, and the maximum wind energy is captured; the cable twisting in the tower caused by the rotation of the nacelle occurs, the angle acquisition module 206 transmits the acquired cable twisting angle information in the tower of the wind turbine 101 to the comparator 207, compares the acquired cable twisting angle information with a cable twisting angle threshold preset in the comparator 207, and transmits a comparison result to the second controller 209, and the second controller 209 controls the cable twisting to be untwisted according to the received angle comparison result.
In the above embodiment, the wind speed acquisition module adopts a wind speed sensor, and the angle acquisition module adopts a pair of inductive proximity switches
Example 2
Referring to fig. 4 to 9, a second embodiment of the present invention is based on the previous embodiment, and is different from the previous embodiment in that: the wind power generator 101 includes a supporting unit 300 and a rotating unit 400.
Wherein the supporting unit 300 is used for supporting the whole power generation system, and the rotating unit 400 is used for pitch control of the blade.
Specifically, the supporting unit 300 includes a supporting rod 301, a power generating assembly 302 disposed above the supporting rod 301, the power generating assembly 302 including a shaft 302 a; the support rod 301 is fixedly installed on the ground, the power generation assembly 302 is a generator, the input shaft 302a is an input shaft of the generator, and the input shaft 302a is driven to rotate.
The rotating unit 400 comprises a rotating column 401 and a blade 402 connected with the rotating column 401, the rotating column 401 is provided with a first through hole 401a penetrating through, the axis of the first through hole 401a is located in the radial direction, one end of the first through hole 401a is fixedly connected with the input shaft 302a, wherein the connection mode can be bolt connection or welding, and the other end of the first through hole 401a is provided with a sealing cover 403.
In this embodiment, the rotating column 401 is uniformly provided with three second through holes 401b along the circumference, the end of the blade 402 includes a rotating shaft 402a, the rotating shaft 402a is embedded in the second through holes 401b, the rotating shaft 402a can rotate in the second through holes 401b, and the number of the blades 402 is three and uniformly distributed along the circumference.
Be provided with spacing annular groove 401c in the second through-hole 401b, be provided with spacing shaft shoulder 402b on the axis of rotation 402a, in spacing shaft shoulder 402b embedding spacing annular groove 401c, the cooperation of spacing annular groove 401c and spacing shaft shoulder 402b made axis of rotation 402a only can rotate, and can not the axial skew.
A partition plate 409 is arranged in the first through hole 401a, the partition plate 409 is in a disc shape and is welded in the first through hole 401a, the partition plate 409 is positioned on one side of the second through hole 401b, first long grooves 409a in the radial direction are arranged on the partition plate 409, and three first long grooves 409a are uniformly distributed along the circumference; a sliding block 404 is arranged in the first through hole 401a, the sliding block 404 can move along the radial direction, the sliding block 404 is provided with a third through hole 404a, the rotating shaft 402a penetrates through the third through hole 404a, the number of the sliding blocks 404 is the same as that of the blades 402, a transmission shaft 404b is arranged on the sliding block 404, and the transmission shaft 404b penetrates through the first long groove 409 a. One side of the slider 404 is slidably connected to the partition 409.
The rotating shaft 402a is provided with a first spiral groove 402c, the first spiral groove 402c extends along a spiral line, the third through hole 404a is provided with a first circular truncated cone 404c, and the first circular truncated cone 404c is embedded into the first spiral groove 402c, so that the linear motion of the slider 404 is converted into the circular motion of the rotating shaft 402a by the matching relation of the first circular truncated cone 404c and the first spiral groove 402c, that is, when the slider 404 and the transmission shaft 404b move in the first through hole 401a in the radial direction, the first circular truncated cone 404c pushes the first spiral groove 402c to enable the blade 402 to rotate, and then the pitch adjustment is realized.
One surface of the sliding block 404 provided with the transmission shaft 404b is in contact with the side surface of the partition 409 and can slide; still be provided with limiting plate 405 in the first through-hole 401a, limiting plate 405, baffle 409 are located slider 404 both sides respectively, and limiting plate 405 passes through the threaded fixation in first through-hole 401a, and a side and the limiting plate 405 surface contact of slider 404, therefore two parallel faces of slider 404 respectively with limiting plate 405, baffle 409 sliding connection, prevent that slider 404 from appearing deflecting.
A limiting boss 404d is arranged on one surface, which is in contact with the limiting plate 405, of the sliding block 404, the limiting boss 404d extends along the moving direction of the sliding block 404, a second long groove 405a corresponding to the limiting boss 404d is arranged on the limiting plate 405, and the limiting boss 404d is embedded in the second long groove 405 a. The limiting boss 404d is slidably connected to the second long groove 405a to limit the slider 404, and preferably, a roller is disposed at the bottom of the limiting boss 404d and is in rolling connection with the second long groove 405 a.
Furthermore, a center shaft 409b is arranged on the partition plate 409, the center shaft 409b is located at the center of the partition plate 409, a rotating disc 406 is sleeved on the center shaft 409b, a fourth through hole 406a is formed in the rotating disc 406, the rotating disc 406 can rotate around the axis of the center shaft 409b, the center shaft 409b penetrates through the fourth through hole 406a and is connected with a limiting ring 409c, and the limiting ring 409c limits axial deviation of the rotating disc 406.
The rotating disc 406 is provided with third long grooves 406B, the transmission shaft 404B penetrates through the first long groove 409a and is embedded into the third long grooves 406B, 3 third long grooves 406B are also uniformly arranged along the circumference, wherein the third long grooves 406B include a first end a and a second end B, the extension line of the connecting line between the first end a and the second end B does not pass through the circle center of the rotating disc 406, the distance from the third long grooves 406B to the circle center of the rotating disc 406 increases from the first end a to the second end B, that is, the length from the first end a to the circle center of the rotating disc 406 in the third long grooves 406B is shortest, the length from the second end B to the circle center of the rotating disc 406 is longest, the distance from the overlapping position of the third long grooves 406B and the first long grooves 409a to the circle center of the rotating disc 406 is related to the rotating position of the rotating disc 406, and the overlapping position of the third long grooves 406B and the first long grooves 409a is the position of the transmission shaft 404B.
Preferably, the central shaft 409b is provided with a through oil injection hole 403d for injecting lubricating oil.
Further, a rotary cylinder 406c is connected to an edge of the rotary disk 406, the rotary disk 406 is integrally formed with the rotary cylinder 406c, a second spiral groove 406d is formed in a side wall of the rotary cylinder 406c, and the second spiral groove 406d is helical and is formed around the rotary cylinder 406.
A fourth elongated slot 401d penetrating through the side wall of the rotating column 401 is arranged in the side wall of the rotating column 401, a pin 407 is arranged in the fourth elongated slot 401d, the pin 407 penetrates through the second spiral slot 406d, the overlapping position of the fourth elongated slot 401d and the second spiral slot 406d is the position of the pin 407, that is, the rotation of the rotating cylinder 406c is controlled by controlling the position of the pin 407 in the fourth elongated slot 401d, so as to drive the rotating disc 406 to rotate.
Furthermore, an adjusting ring 408 is sleeved outside the rotating column 401, an annular groove 408a is formed in the inner wall of the adjusting ring 408, the end portion of the pin 407 is embedded into the annular groove 408a, and the position of the pin 407 is controlled by the adjusting ring 408. Preferably, the external thread 401e is disposed on the portion of the outer portion of the rotating column 401, which is engaged with the adjusting ring 408, the internal thread 408b is disposed on the inner wall of the adjusting ring 408, and the external thread 401e is engaged with the internal thread 408b, i.e., when the position of the pin 407 in the fourth elongated slot 401d needs to be adjusted, the adjusting ring 408 is rotated, and because the adjusting ring 408 is threadedly engaged with the rotating column 401, a self-locking structure is formed, and the pin 407 can only be driven by the adjusting ring 408, but the adjusting ring 408 cannot be driven by the pin 407.
In this embodiment, when the wind turbine needs to adjust the pitch, the adjustment can be completed through a series of linkages by only operating the adjusting ring 408 to rotate.
It is important to note that the construction and arrangement of the present application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperatures, pressures, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the present invention is not limited to a particular embodiment, but extends to various modifications that nevertheless fall within the scope of the appended claims.
Moreover, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those unrelated to the presently contemplated best mode of carrying out the invention, or those unrelated to enabling the invention).
It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, without undue experimentation.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.

Claims (10)

1. The utility model provides a wind turbine generator system master control system which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the wind power generation set (100) comprises a wind power generator (101) and a rectifier (102) connected with the wind power generator (101);
a control unit (200) comprising a control device (201), the rectifier (102) being connected to the control device (201);
the wind turbine generator system (100) is at least provided with two groups, three-phase alternating currents generated by at least two wind turbine generators (101) are respectively converted into direct currents through respective rectifiers (102), and the direct currents are connected in parallel in a control device (201) and are converted into voltage pulse direct currents.
2. The wind turbine generator main control system according to claim 1, wherein: the control device (201) is connected with a grid-connected inverter (202), and the voltage ripple direct current is subjected to maximum power tracking and voltage control by the control device (201) and then is transmitted to the grid-connected inverter (202).
3. The wind turbine generator main control system according to claim 2, wherein: the control device (201) comprises a programmable controller (201a) and a load release device (201b), wherein the programmable controller (201a) is connected with the load release device (201b) through a switch circuit.
4. The wind turbine generator main control system according to claim 3, wherein: the control device (201) instructs the grid-connected inverter (202) to generate three-phase alternating current with the same frequency and the same phase as the power grid according to the magnitude of the instantaneous power transmitted to the grid-connected inverter (202) and the operation state of the power grid, and transmits the three-phase alternating current to the power grid (204).
5. The wind turbine main control system according to claim 1 or 4, characterized in that: the control unit (200) further comprises a wind speed acquisition module (205), an angle acquisition module (206), a comparator (207), a first controller (208) and a second controller (209);
the wind driven generator (101) is connected with a wind speed acquisition module (205), the wind speed acquisition module (205) transmits acquired hub wind speed information to the comparator (207), the acquired hub wind speed information is compared with a wind speed threshold preset in the comparator (207), and a comparison result is transmitted to the first controller (208); the first controller controls the cabin of the wind driven generator (101) to yaw and rotate according to the received wind speed comparison result; the angle acquisition module (206) transmits the acquired twisted cable angle information in the tower barrel of the wind driven generator (101) to the comparator (207), compares the twisted cable angle information with a twisted cable angle threshold preset in the comparator (207), transmits a comparison result to the second controller (209), and the second controller (209) controls the twisted cable to be untwisted according to the received angle comparison result.
6. The wind turbine generator main control system according to claim 5, wherein: the wind driven generator (101) comprises a supporting unit (300) and a rotating unit (400), wherein the supporting unit (300) comprises a supporting rod (301) and a power generation assembly (302) arranged above the supporting rod (301), and the power generation assembly (302) comprises an input shaft (302 a); the rotating unit (400) comprises a rotating column (401) and a blade (402) connected with the rotating column (401), wherein the rotating column (401) is provided with a first through hole (401a) which penetrates through the rotating column, one end of the first through hole (401a) is fixedly connected with the input shaft (302a), and the other end of the first through hole (401a) is provided with a sealing cover (403); the rotating column (401) is uniformly provided with three second through holes (401b) along the circumference, the end part of the blade (402) comprises a rotating shaft (402a), the rotating shaft (402a) is embedded into the second through holes (401b), and the number of the blades (402) is three; be provided with spacing annular (401c) in second through-hole (401b), be provided with spacing shaft shoulder (402b) on axis of rotation (402a), spacing shaft shoulder (402b) embedding in spacing annular (401 c).
7. The wind turbine generator main control system according to claim 6, wherein: a partition plate (409) is arranged in the first through hole (401a), first long grooves (409a) in the radial direction are formed in the partition plate (409), and three first long grooves (409a) are uniformly distributed along the circumference; a sliding block (404) is arranged in the first through hole (401a), the sliding block (404) is provided with a third through hole (404a), the rotating shaft (402a) penetrates through the third through hole (404a), the number of the sliding blocks (404) is consistent with that of the blades (402), a transmission shaft (404b) is arranged on the sliding block (404), and the transmission shaft (404b) penetrates through the first long groove (409 a); the rotating shaft (402a) is provided with a first spiral groove (402c), the first spiral groove (402c) extends along a spiral line, a first round table (404c) is arranged in the third through hole (404a), and the first round table (404c) is embedded into the first spiral groove (402 c).
8. The wind turbine generator main control system according to claim 7, wherein: one surface of the sliding block (404) provided with the transmission shaft (404b) is contacted with the side surface of the partition plate (409); a limiting plate (405) is further arranged in the first through hole (401a), the limiting plate (405) and the partition plate (409) are respectively located on two sides of the sliding block (404), one side face of the sliding block (404) is in surface contact with the limiting plate (405), a limiting boss (404d) is arranged on one side, in contact with the limiting plate (405), of the sliding block (404), a second long groove (405a) corresponding to the limiting boss (404d) is arranged on the limiting plate (405), and the limiting boss (404d) is embedded into the second long groove (405 a); a central shaft (409b) is arranged on the partition plate (409), a rotating disc (406) is sleeved on the central shaft (409b), a fourth through hole (406a) is formed in the rotating disc (406), and the central shaft (409b) penetrates through the fourth through hole (406a) and is connected with a limiting ring (409 c); a third long groove (406B) is formed in the rotating disc (406), the transmission shaft (404B) penetrates through the first long groove (409a) and then is embedded into the third long groove (406B), the third long groove (406B) comprises a first end (A) and a second end (B), an extension line of a connecting line between the first end (A) and the second end (B) does not pass through the circle center of the rotating disc (406), and the distance from the third long groove (406B) to the circle center of the rotating disc (406) is increased from the first end (A) to the second end (B); the central shaft (409b) is provided with a through oil hole (403 d).
9. The wind turbine generator main control system according to claim 8, wherein: the edge of the rotating disc (406) is connected with a rotating cylinder (406c), the side wall of the rotating cylinder (406c) is provided with a second spiral groove (406d), the side wall of the rotating column (401) is provided with a fourth long groove (401d) which penetrates through the side wall, a pin shaft (407) is arranged in the fourth long groove (401d), and the pin shaft (407) penetrates through the second spiral groove (406 d).
10. The wind turbine generator main control system according to claim 9, wherein: an adjusting ring (408) is sleeved outside the rotating column (401), an annular groove (408a) is formed in the inner wall of the adjusting ring (408), and the end part of the pin shaft (407) is embedded into the annular groove (408 a); the part that rotates post (401) outside and regulation circle (408) complex is provided with external screw thread (401e), adjust circle (408) inner wall and be provided with internal thread (408b), external screw thread (401e) and internal thread (408b) cooperation are connected.
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002068819A1 (en) * 2001-02-23 2002-09-06 Jeumont S.A. Method and device for regulating a wind machine
CN1427149A (en) * 2002-11-13 2003-07-02 沈阳工业大学 Megawatt grade speed veriable constant frequency wind electric generator set
CN101363406A (en) * 2007-08-08 2009-02-11 上海万德风力发电股份有限公司 Wind power generation system with multi-blower fans connection in parallel
CN101787961A (en) * 2010-03-04 2010-07-28 武汉理工大学 Small magnetic suspension horizontal shaft wind power generator
US20110204636A1 (en) * 2010-12-22 2011-08-25 Scholte-Wassink Hartmut Wind turbine and operating same
JP2012050181A (en) * 2010-08-24 2012-03-08 Aida Eng Ltd Wind power generator
WO2021082586A1 (en) * 2019-10-30 2021-05-06 浙江大学 Offshore wind farm low-frequency alternating-current uncontrolled rectification electric power transmission system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002068819A1 (en) * 2001-02-23 2002-09-06 Jeumont S.A. Method and device for regulating a wind machine
CN1427149A (en) * 2002-11-13 2003-07-02 沈阳工业大学 Megawatt grade speed veriable constant frequency wind electric generator set
CN101363406A (en) * 2007-08-08 2009-02-11 上海万德风力发电股份有限公司 Wind power generation system with multi-blower fans connection in parallel
CN101787961A (en) * 2010-03-04 2010-07-28 武汉理工大学 Small magnetic suspension horizontal shaft wind power generator
JP2012050181A (en) * 2010-08-24 2012-03-08 Aida Eng Ltd Wind power generator
US20110204636A1 (en) * 2010-12-22 2011-08-25 Scholte-Wassink Hartmut Wind turbine and operating same
WO2021082586A1 (en) * 2019-10-30 2021-05-06 浙江大学 Offshore wind farm low-frequency alternating-current uncontrolled rectification electric power transmission system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
宋文娟等: "兆瓦级直驱式风力发电机组控制系统设计", 《测控技术》 *

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