CN219012777U

CN219012777U - Floating type multi-field test system for offshore wind turbine

Info

Publication number: CN219012777U
Application number: CN202222934559.4U
Authority: CN
Inventors: 汪建文; 闫思佳; 张建伟; 张立茹; 高志鹰
Original assignee: Inner Mongolia University of Technology
Current assignee: Inner Mongolia University of Technology
Priority date: 2022-11-04
Filing date: 2022-11-04
Publication date: 2023-05-12
Anticipated expiration: 2032-11-04

Abstract

The utility model discloses a floating type offshore wind turbine multi-field test system, which comprises: the device comprises a wind turbine, an unsteady motion platform and a testing device; the wind turbine and the testing device are fixed on an unsteady motion platform which is driven by a servo motor and has the functions of simulating the forward and backward swinging displacement of the sea and simulating the left and right swinging displacement of the sea; the floating type offshore wind turbine is moved through the unsteady motion platform, simulation of unsteady motion of the floating type offshore wind turbine is achieved, and stress field test and flow field test are conducted on unsteady motion of the floating type offshore wind turbine through the testing device. By adopting the technical scheme of the utility model, the stress field test and the flow field test can be simulated for the unsteady motion of the floating offshore wind turbine.

Description

Floating type multi-field test system for offshore wind turbine

Technical Field

The utility model belongs to the technical field of wind turbines, and particularly relates to a floating type multi-field test system for an offshore wind turbine.

Background

The wind turbine is a device for converting wind energy into electric energy, and the development of land wind turbines gradually enters a bottleneck period due to land shortage and noise, in recent years, the development of offshore wind turbines is rapid, especially deep sea offshore wind turbines, while floating offshore wind turbines are main power types, and the advantages are mainly that the manufacturing cost is lower, but the floating offshore wind turbines are difficult to maintain due to sea water flowing and waves, and unsteady motions caused by the flowing and the waves have certain randomness, so that the effective detection of the change conditions of wind turbine stress and flow fields under the unsteady motions has important significance.

The floating wind driven generator is divided into a single-column platform, a tension leg platform and a barge platform according to the hydrodynamic characteristics of the floating wind driven generator, but related standards of the floating wind driven generator are deficient, different sea conditions mainly affect the six degrees of freedom of the wind driven generator platform, the pneumatic load of the wind driven generator can change the operation of the platform, and wind speed fluctuation and control strategies for the wind driven generator such as pitch and yaw can obviously affect the wind driven generator platform. The six degrees of freedom of motion for the platform are mainly: the six free movements are more complicated by various pressures and moments acting on the wind turbine, such as rolling and pitching, and platform movement can react to aerodynamic loads on the wind turbine, and can affect the operation of the wind turbine, and the six degrees of freedom movements are more basic and intense, namely rolling and pitching, and can have significant effects on the wind turbine surface aerodynamic load distribution and dynamic response and stress. The method aims at the earliest research of the floating type offshore wind turbine, aims at summarizing a dynamics analysis model and a related full-coupling model, calculates the response of six degrees of freedom based on ocean hydrodynamics and aerodynamics, develops a theoretical model and calculates the power response of the wind turbine under a series of conditions such as wind and wave coupling, aero-elastic effect, pitch variation, yaw and the like, and besides, a series of pool model experiments for the floating type offshore wind turbine, wherein a wind turbine control strategy can cause resonance reaction, increase fatigue load of the wind turbine, and research on the wind model by utilizing a spectrum analysis method, so that the influence of a platform mooring system on the motion behavior of the platform is investigated. So far, a research mode combining theory, simulation and experiment is formed for the floating type offshore wind turbine. At present, the experimental study is mainly a pool experiment, and the pool experiment has the defects of high cost and poor operability. The defects of simulation research are mainly poor precision.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a multi-field test system for a floating offshore wind turbine, which can simulate the unsteady motion of the floating offshore wind turbine to perform stress field test and flow field test.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

a floating offshore wind turbine multi-farm test system comprising: the device comprises a wind turbine, an unsteady motion platform and a testing device, wherein the testing device comprises stress field testing equipment and flow field testing equipment; the wind turbine and the testing device are fixed on the unsteady motion platform, and the unsteady motion platform is driven by a servo motor and has the functions of simulating the back-and-forth swing displacement and simulating the left-and-right swing displacement of the sea; and the floating type offshore wind turbine is moved through the unsteady motion platform, so that the unsteady motion simulation of the floating type offshore wind turbine is realized, and the stress field test and the flow field test are performed on the unsteady motion of the floating type offshore wind turbine through the testing device.

Preferably, the unsteady motion platform includes: the device comprises a heave motion platform, a wind turbine fixed platform, a PIV camera fixed platform and a PIV laser fixed platform, wherein the heave motion platform and the heave motion platform are mutually perpendicular, and sliding rails are arranged on the heave motion platform and the heave motion platform.

Preferably, the stress field testing device comprises: rotating the telemetry device and the strain gage; the rotary telemetry device is arranged on the generator; the strain gauge is arranged on the blade and connected with the rotation telemetry device, and the rotation telemetry device is connected with a computer.

Preferably, the flow field test apparatus comprises: the PIV camera and the PIV laser are respectively arranged on the PIV camera fixed platform and the PIV laser fixed platform; the PIV camera and the PIV laser are powered by a PIV power supply and are connected with a computer; the power of the PIV laser is recorded and controlled by a load control device and a power regulating device; the load control device and the power regulating device are both connected with a computer.

Preferably, the wind turbine includes: the wind turbine comprises blades, a tower, a flange and a generator, wherein the top of the tower is connected with the generator, the bottom of the tower is connected with the unsteady motion platform, and the blades are connected with the generator through the flange.

Preferably, the load control device is a direct current adjustable load control device,

preferably, the power conditioning device is a power analyzer.

Preferably, the PIV laser is mounted on a PIV laser mounting platform by a PIV laser mount.

Compared with the prior art, the utility model has the following beneficial effects:

the device can simulate the effects of the platform on the cross-swinging and the heave movement and the effects of the cross-swinging and the heave coupling movement under the combined action of offshore wind, ocean current and waves through the unsteady movement platform, has the characteristics of multi-field coupling measurement of stress fields and flow fields, is fixed in relative position between the measuring device and the wind turbine, is accurate in measured data, reasonable in design, compact in structure and convenient to manufacture and transport.

Drawings

FIG. 1 is a schematic diagram of a multi-farm test system for a floating offshore wind turbine of the present utility model;

FIG. 2 is a schematic view of an unsteady motion platform of the present utility model;

FIG. 3 is a schematic diagram of the connection of a computer to a PIV power supply, a power regulating device, and a load control device;

1, a servo motor; PIV camera; 3. a tower; 4. a generator; 5. a flange; 6. a strain gage; 7. rotating the telemetry device; 8. a blade; piv laser; piv laser mount; 11. an unsteady motion platform; 12. a computer; PIV power supply; 14. a power regulating device; 15. a load control device; 11-1. A heave motion platform (x direction); 11-2. A swaying motion platform (y direction); 11-3, sliding rails; 11-4, a wind turbine fixed platform; PIV camera stationary platform; PIV laser mounting platform.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.

Example 1:

as shown in fig. 1 to 3, the present utility model provides a multi-farm test system for a floating offshore wind turbine, comprising: the wind turbine, the unsteady motion platform 11 and the testing device; the testing device comprises stress field testing equipment and flow field testing equipment, wherein,

the wind turbine and the testing device are fixed on an unsteady motion platform 11, the unsteady motion platform has an x-direction displacement function of simulating the forward and backward swing of the sea and a y-direction displacement function of simulating the side-to-side swing of the sea, and a more complex motion mode can be realized when the x-direction and the y-direction are simultaneously moved, and the x-direction and the y-direction are mutually perpendicular; the floating type offshore wind turbine is moved through the unsteady motion platform 11, simulation of unsteady motion of the floating type offshore wind turbine is achieved, and stress field test and flow field test are conducted on unsteady motion of the floating type offshore wind turbine through the testing device. Because the testing device and the wind turbine are simultaneously arranged on the unsteady motion platform 11, the testing device and the wind turbine can synchronously move, and the relative position is ensured to be unchanged so as to ensure the accuracy and precision of the measured data.

The unsteady motion platform 11 is driven by the servo motor 1, the servo motor 1 is connected with the computer 12 through a lead, the computer 12 transmits instructions to the servo motor 1 through a pre-written program, the servo motor 1 drives the unsteady motion platform 11 to do swaying (y direction) and swaying (x direction) motions according to the instructions through a specified rotating speed, and the wind turbine and the testing device are installed on the same unsteady motion platform 11, so that the relative positions are fixed, and the measured data are accurate.

The unsteady motion platform 11 includes: the device comprises a heave motion platform (x direction) 11-1, a heave motion platform (y direction) 11-2, a wind turbine fixed platform 11-4, a PIV camera fixed platform 11-5 and a PIV laser fixed platform 11-6, wherein the heave motion platform (x direction) 11-1 and the heave motion platform (y direction) 11-2 are mutually perpendicular, and the heave motion platform (x direction) 11-1 and the heave motion platform (y direction) 11-2 are provided with sliding rails 11-3.

The unsteady motion platform 11 is driven by a servo motor 1 through two sloshing motion platforms 11-1 with sliding rails and a sloshing motion platform 11-2, and the platform moving forwards and backwards (i.e. the sloshing motion platform 11-1) is arranged on the sliding rails of the left and right motion platform (i.e. the sloshing motion platform 11-2). The wind turbine, the PIV camera 2 and the PIV laser 9 are mounted on the sliding rail on the front and back moving platform through a so-called wind turbine fixed platform 11-4, a PIV camera fixed platform 11-5 and a PIV laser fixed platform 11-6. When moving left and right, power is provided by the servo motor 1, so that the left and right moving platform drives the front and rear moving platform arranged on the left and right moving platform to move left and right, and the front and rear moving platform and the wind turbine, the PIV camera 2 and the PIV laser 9 arranged on the front and rear moving platform can move together. When moving back and forth, the servo motor 1 provides power for a back and forth moving platform, and the wind turbine, the PIV camera 2 and the PIV laser 9 which are arranged on the back and forth moving platform are driven to move back and forth together through the back and forth moving platform. If the left-right moving platform and the front-back moving platform are started at the same time, the front-back, left-right and right simultaneous movement can be realized.

The stress field testing device comprises: the strain gauge comprises a rotation telemetry device 7 and a strain gauge 6, wherein the rotation telemetry device 7 is arranged on a generator 4 through a flange 5, the strain gauge 6 is arranged on a blade 8 of a wind turbine and is connected with the rotation telemetry device 7 through a wire, and the rotation telemetry device 7 is connected with a computer 12 through an antenna;

the flow field test apparatus includes: a PIV camera 2 and a PIV laser 9, and are mounted on a PIV camera fixed platform 11-5 and a PIV laser fixed platform 11-6, respectively, the PIV laser 9 being mounted on the PIV laser fixed platform 11-6 by a PIV laser mounting frame 10; the PIV camera 2 and the PIV laser 9 are powered by a PIV power supply and connected with a computer 12 by a wire; the power of the PIV laser 9 is recorded and controlled by a load control device 15 and a power conditioning device 14. The load control device and the power regulating device are connected with a computer through wires. The load control device 15 is a dc adjustable load control device, and the power adjustment device 14 is a power analyzer.

The wind turbine includes: the wind turbine comprises blades 8, a tower 3, a flange 5 and a generator 4, wherein the top of the tower 3 is connected with the generator 4, the bottom of the tower 3 is connected with an unsteady motion platform 11, and the blades 8 are connected with the generator 4 through the flange 5. The wind turbine is fixed on the unsteady motion platform 11 through the tower 3 and keeps a fixed relative position with the stress field and the flow field testing equipment.

The working flow of the utility model is as follows: when the wind turbine is tested, the wind turbine is opposite to the wind tunnel, the rotary telemetry device 7 is connected with the generator through the flange 5 and synchronously rotates with the blades 8, the strain gauge 6 is arranged on the blades 8 and is connected with the rotary telemetry device 7 through a wire, and the rotary telemetry device 7 transmits the obtained strain value of the blades to the computer 12 through an antenna; the PIV camera 2 and the PIV laser 9 are respectively arranged on a PIV camera fixed platform 11-5 and a PIV laser fixed platform 11-6, wherein the PIV laser 9 is arranged on the PIV laser fixed platform 11-6 through a PIV laser mounting frame 10, is connected with a computer 12 through a wire and transmits a flow field speed cloud image around a blade to the computer 12; the servo motor 1 and the computer 12 are connected through a wire, the computer 12 sends out instructions to the servo motor 1 through a preset program, the servo motor 1 controls the unsteady motion platform 11 to do the surging, surging and surging coupling actions to simulate the offshore operation conditions, and the relative positions are invariable as the equipment is fixed on the unsteady motion platform 11.

The top of the wind turbine tower 3 is connected with a generator 4, the bottom of the tower 3 is connected with an unsteady motion platform 11, blades 8 are connected with the generator 4 through flanges 5, and the wind turbine is driven by wind to drive the generator 4 to generate electricity.

The load control device 15 and the power regulating device 14 are connected to the computer via wires and simultaneously connected to the generator 4 via wires, the output power of the generator 4 is regulated via the load control device 15, and the generator power is recorded by the power regulating device 14.

The blade strain values and blade flow field velocity cloud patterns are collected by the computer 12 and analyzed by dedicated software.

The above embodiments are merely illustrative of the preferred embodiments of the present utility model, and the scope of the present utility model is not limited thereto, but various modifications and improvements made by those skilled in the art to which the present utility model pertains are made without departing from the spirit of the present utility model, and all modifications and improvements fall within the scope of the present utility model as defined in the appended claims.

Claims

1. A floating offshore wind turbine multi-farm test system, comprising: the device comprises a wind turbine, an unsteady motion platform and a testing device, wherein the testing device comprises stress field testing equipment and flow field testing equipment; the wind turbine and the testing device are fixed on the unsteady motion platform, and the unsteady motion platform is driven by a servo motor and has the functions of simulating the back-and-forth swing displacement and simulating the left-and-right swing displacement of the sea; and the floating type offshore wind turbine is moved through the unsteady motion platform, so that the unsteady motion simulation of the floating type offshore wind turbine is realized, and the stress field test and the flow field test are performed on the unsteady motion of the floating type offshore wind turbine through the testing device.

2. The floating offshore wind turbine multi-farm test system of claim 1, wherein the unsteady motion platform comprises: the device comprises a heave motion platform, a wind turbine fixed platform, a PIV camera fixed platform and a PIV laser fixed platform, wherein the heave motion platform and the heave motion platform are mutually perpendicular, and sliding rails are arranged on the heave motion platform and the heave motion platform.

3. A floating offshore wind turbine multi-farm test system according to claim 2, wherein the stress-farm test apparatus comprises: rotating the telemetry device and the strain gage; the rotary telemetry device is arranged on the generator; the strain gauge is arranged on the blade and connected with the rotation telemetry device, and the rotation telemetry device is connected with a computer.

4. A floating offshore wind turbine multi-farm test system according to claim 3, wherein the flow field test apparatus comprises: the PIV camera and the PIV laser are respectively arranged on the PIV camera fixed platform and the PIV laser fixed platform; the PIV camera and the PIV laser are powered by a PIV power supply and are connected with a computer; the power of the PIV laser is recorded and controlled by a load control device and a power regulating device; the load control device and the power regulating device are both connected with a computer.

5. The floating offshore wind turbine multi-farm test system of claim 4, wherein the wind turbine comprises: the wind turbine comprises blades, a tower, a flange and a generator, wherein the top of the tower is connected with the generator, the bottom of the tower is connected with the unsteady motion platform, and the blades are connected with the generator through the flange.

6. The floating offshore wind turbine multi-farm test system of claim 5, wherein the load control device is a dc adjustable load control device.

7. The floating offshore wind turbine multi-farm test system of claim 6, wherein the power conditioning device is a power analyzer.

8. The floating offshore wind turbine multi-farm test system of claim 7, wherein the PIV laser is mounted on a PIV laser mounting platform by a PIV laser mount.