CN117052606A - Wind turbine generator system state monitoring system and monitoring method - Google Patents
Wind turbine generator system state monitoring system and monitoring method Download PDFInfo
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- CN117052606A CN117052606A CN202311102705.XA CN202311102705A CN117052606A CN 117052606 A CN117052606 A CN 117052606A CN 202311102705 A CN202311102705 A CN 202311102705A CN 117052606 A CN117052606 A CN 117052606A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims description 22
- 238000012806 monitoring device Methods 0.000 claims abstract description 52
- 230000001502 supplementing effect Effects 0.000 claims abstract description 24
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims abstract description 10
- 235000017491 Bambusa tulda Nutrition 0.000 claims abstract description 10
- 241001330002 Bambuseae Species 0.000 claims abstract description 10
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims abstract description 10
- 239000011425 bamboo Substances 0.000 claims abstract description 10
- 230000001133 acceleration Effects 0.000 claims description 54
- 238000009434 installation Methods 0.000 claims description 8
- 230000007613 environmental effect Effects 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 238000004088 simulation Methods 0.000 claims description 4
- 230000001678 irradiating effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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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
- F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
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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
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
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- 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
Abstract
The invention provides a wind turbine generator system state monitoring system which comprises a video clearance monitoring device and a central processing unit, wherein the video clearance monitoring device comprises a high-definition camera, a light supplementing lamp, a tower lamp ring and a light controller, the high-definition camera is arranged at the bottom of a cabin, and the light supplementing lamp is positioned near the high-definition camera; the light supplementing lamp and the tower tube lamp ring are connected with a light controller, a light sensor and a first data acquisition instrument are arranged in the light controller, and the first data acquisition instrument is connected with a central processing unit; the tower down lamp ring is provided with two, and two tower down lamp rings are all installed on the tower section of thick bamboo, and its center all coincides with the axis of tower section of thick bamboo, and first tower down lamp ring is in alignment with point A in the direction of height, and second tower down lamp ring is in alignment with point B in the direction of height. The monitoring system solves the problem that the video headroom monitoring device is low in monitoring precision under the condition of dark light, monitors the wind turbine generator set through a plurality of monitoring means, and is good in monitoring effect and high in safety.
Description
Technical Field
The invention relates to the technical field of wind turbine generator monitoring, in particular to a wind turbine generator state monitoring system and a wind turbine generator state monitoring method.
Background
The wind turbine generator is large-scale wind power generation equipment consisting of blades, hubs, cabins, towers and the like. In recent years, the wind power generation industry has rapidly developed, the size, weight and single-machine capacity of the wind turbine are continuously increased, and the intelligent monitoring requirement on the wind turbine is also higher and higher.
Wind turbine monitoring includes monitoring of clearance distance between blades and tower (such as in patent CN113915076A, CN113153658A and CN111336073 a) and tower vibration monitoring (CN 115199481A, CN113565701a and CN114577333 a). At present, the monitoring technology aiming at the clearance distance between the blades and the tower mainly comprises video monitoring, radar monitoring and the like, wherein the technology of the clearance through the video monitoring has the advantages of mature technology and high monitoring precision when the light is good in the daytime, but the monitoring precision is easily influenced by environmental conditions such as dark light at night, large sand wind and the like. In addition, at present, the monitoring of the vibration of the tower is mainly realized by monitoring the vibration frequency, the vibration displacement and the like of the tower, but the monitoring of the vibration of the tower is not combined with the rotation angle position of the impeller, and the linkage relation between the two cannot be embodied.
Therefore, a novel wind turbine generator system state monitoring system and a novel wind turbine generator system state monitoring method are needed to monitor tower clearance and tower state, and reduce the occurrence of wind turbine generator system safety accidents.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a wind turbine generator system state monitoring system, wherein two tower tube lamp rings are arranged at specific positions of a tower tube to monitor the clearance in an all-dimensional manner, and the two tower tube lamp rings and a light supplementing lamp together solve the problem of low monitoring precision of a video clearance monitoring device under the condition of dark light; the monitoring system also combines the monitoring of the tower vibration with the rotation angle position of the impeller, so that the unbalanced problem or other faults of the impeller are monitored, the wind turbine generator is monitored by a plurality of monitoring means, the monitoring effect is good, and the safety is high.
The technical scheme adopted for achieving the purposes of the invention is as follows:
the utility model provides a wind turbine generator system state monitoring system, includes video headroom monitoring device and the central processing unit that is connected at least, its characterized in that: the video clearance monitoring device comprises a high-definition camera, a light supplementing lamp, a tower lamp ring and a light controller, wherein the high-definition camera is arranged at the bottom of the engine room and positioned between the tower and the blades, and shoots image information of the blades and the tower, the high-definition camera is connected with a central processing unit, and the light supplementing lamp is arranged at the bottom of the engine room and positioned near the high-definition camera; the light supplementing lamp and the tower tube lamp ring are connected with a light controller, a light sensor and a first data acquisition instrument are arranged in the light controller, the first data acquisition instrument is connected with a central processing unit, the light sensor monitors environmental light intensity data, the first data acquisition instrument acquires the data monitored by the light sensor and transmits the data to the light sensor and the central processing unit, and when the environmental light intensity is lower than a set threshold value, the light controller controls the light supplementing lamp and the tower tube lamp ring to be started;
the tower down lamp ring is provided with two, is first tower down lamp ring and second tower down lamp ring respectively, and two tower down lamp rings are all installed on the tower section of thick bamboo, and the mounted position of two tower down lamp rings satisfies following condition: the centers of the two tower tube lamp rings are coincident with the central axis of the tower tube, the first tower tube lamp ring is aligned with the point A in the height direction, and the second tower tube lamp ring is aligned with the point B in the height direction;
the method for determining the point A comprises the following steps: turning a normal blade to the lowest point to obtain the central point O of the blade root 1 With the point O as the center of a circle 1 The length of the line connected with the point C of the blade tip is the radius to form a circle O 1 Circle O 1 The intersection point of the projection of the tower barrel in the vertical direction is A;
the method for determining point B: turning a blade in a normal stateTo the lowest point, taking the position point with higher risk of breaking problem in the simulation analysis of the blade strength or the position point with the largest breaking problem in the prior blade breaking accident as the circle center O 2 In point O 2 The length of the line connected with the point C of the blade tip is the radius to form a circle O 2 Circle O 2 And the intersection point of the projection of the tower barrel in the vertical direction is B.
The wind turbine generator system state monitoring system further comprises a vibration monitoring device and an impeller corner position monitoring device, wherein the vibration monitoring device is arranged at the central position of the top of Yu Datong and monitors vibration acceleration, vibration speed and vibration displacement data of the tower in real time; the impeller corner position monitoring device is arranged in the blade root hub and used for determining the corner position of the impeller and the position of each blade;
the video clearance monitoring device, the vibration monitoring device, the impeller corner position monitoring device and the central processing unit are all connected with a tower bottom cabinet at the bottom of the tower barrel to obtain electric energy.
The vibration monitoring device comprises a vibration sensor and a second data acquisition instrument, wherein the vibration sensor is arranged at the center of the top of the tower, the vibration sensor is connected with the second data acquisition instrument, the second data acquisition instrument is connected with the central processing unit, the vibration sensor monitors vibration acceleration, vibration speed and vibration displacement data of the tower, and the second data acquisition instrument acquires data monitored by the vibration sensor and transmits the data to the central processing unit.
The impeller corner position monitoring device comprises a first acceleration sensor, a second acceleration sensor and a third data acquisition instrument, wherein the installation positions of the two acceleration sensors meet the following conditions:
a1, the first acceleration sensor and the second acceleration sensor are positioned on the circumference taking the rotation center of the impeller as the center of a circle, and an included angle of 90 degrees is formed between the first acceleration sensor and the second acceleration sensor;
a2, the plane of the axes of the monitoring directions of the two acceleration sensors is perpendicular to the rotation central axis of the impeller, and the intersection point of the two axes is on the rotation central axis of the impeller;
a3, the monitoring direction axis of the first acceleration sensor is arranged in a plane where the blade root flange axis of the first blade and the rotation central axis of the impeller are located;
the first acceleration sensor and the second acceleration sensor are connected with a third data acquisition instrument, the third data acquisition instrument is connected with the central processing unit, and the third data acquisition instrument acquires data monitored by the two acceleration sensors and transmits the data to the central processing unit.
The light supplementing lamp is a laser spotlight, the laser spotlight comprises a lamp body and a support, the lamp body is connected to the support, the support is arranged at the bottom of the engine room, and the angle between the lamp body and the support is adjusted according to the requirement of irradiating the blade tip.
The two tower tube lamp rings are consistent in structure and comprise a mounting bracket, an arc-shaped groove, a cable and a lamp belt, wherein the arc-shaped groove is mounted on the tower tube through the mounting bracket, the arc-shaped groove is provided with the cable groove and the lamp belt groove, the cable groove is positioned at the inner side, and the lamp belt groove is positioned at the outer side; the cable is installed on the cable trough, the lamp belt is installed on the lamp trough, and the cable is connected with the lamp belt.
The lower surface of the bottom plate of the arc-shaped groove is a horizontal surface, the upper surface of the bottom plate is an inclined surface with high inner side and low outer side, the angle range between the upper surface and the lower surface is 0.5-3 degrees, and annular drainage grooves and drainage holes distributed at intervals are arranged at the bottoms of the outer edges of the cable groove and the lamp groove.
The arc-shaped groove is connected with a solar power supply, and the solar power supply is connected with a cable to supply power for the lamp strip.
The installing support is between annular interval distribution connection Yu Datong and the arc groove, and the installing support includes outer support and inner support, but outer support and inner support telescopic connection, the inner support is fixed on the tower section of thick bamboo outer wall, outer support and arc groove fixed connection.
The invention also provides a monitoring method of the wind turbine generator system state monitoring system, which comprises the following steps: s1, the light sensor monitors the intensity of ambient light in real time, and transmits the ambient light intensity data to a light controller and a central processing unit through a first data acquisition instrument; when the intensity of the ambient light is lower than a set threshold value, the light controller turns on the two tower tube lamp rings and the light supplementing lamp, and when the intensity of the ambient light is higher than the set threshold value, the light controller turns off the two tower tube lamp rings and the light supplementing lamp;
s2, in the running process of the wind turbine generator, the high-definition camera shoots image information of the blades and the tower in real time and transmits the image information to the central processing unit; the CPU stores and analyzes the received images, and the analysis and judgment method is as follows:
s2.1, analyzing an image by image processing software in the central processing unit, and if the light intensity data signals received by the central processing unit show that the two tower lamp rings are not started, identifying the two tower lamp rings by the image processing software in the central processing unit according to the real object annular characteristics of the first tower lamp ring and the second tower lamp ring; if the light intensity data signals received by the central processing unit show that the tower tube lamp rings are started, the image processing software in the central processing unit identifies the two tower tube lamp rings according to the shape characteristics and the brightness characteristics of the first tower tube lamp ring and the second tower tube lamp ring;
s2.2, the image processing software in the central processing unit recognizes the blade tip according to the shape characteristics and gray level contrast of the blade tip;
s2.3, the central processing unit calculates the distance L between the blade tip and the first tower lamp ring according to the pixel distances between the blade tip and the first tower lamp ring and the pixel distances between the blade tip and the second tower lamp ring 1 Distance L between blade tip and second tower lamp ring 2 When L 1 Is larger than the distance between the blade tip and the first tower tube lamp ring, and L 2 When the distance between the blade tip and the second tower lamp ring is larger than the set threshold value, the tower clearance can be considered normal; if any one of the two conditions reaches a set threshold value, the central processing unit sends out a tower clearance small early warning;
s3, when the impeller of the wind turbine rotates, the impeller rotation angle position monitoring device monitors acceleration data in real time, the third data acquisition instrument transmits the acquired data to the central processing unit, and the central processing unit analyzes and calculates the acceleration data to obtain the real-time rotation speed of the impeller and the real-time positions of the three blades;
s4, in the running process of the wind turbine, the vibration monitoring device monitors vibration information of the top of the tower in real time and transmits the vibration information to the central processing unit through the second data acquisition instrument; the central processing unit combines the impeller corner position information, and marks vibration data of the top of the tower once every 5 degrees of rotation of the impeller from the position where a certain blade is positioned at the lowest position, and if the vibration data difference value reaches a set threshold value at two corner positions which are separated by 120 degrees by integer multiples under the same wind speed and within 1 minute of time, the central processing unit sends out early warning.
Compared with the prior art, the technical scheme provided by the invention has the following advantages:
1. according to the video clearance monitoring device in the wind turbine generator system state monitoring system, two tower lamp rings are arranged on the tower, the installation positions of the two tower lamp rings are associated with the position points with higher risk of breakage problems in simulation analysis of the root of the blade and the strength of the blade or the position point with the most breakage problems in the past blade breakage accident, so that the clearance can be monitored in an omnibearing manner, the monitoring effect is good, and the safety is high;
and two tower down lamp rings can also send the light under the condition that light is dark, have solved the problem that video headroom monitoring device monitoring accuracy is low under the condition that light is dark together with the light filling lamp.
2. The wind turbine generator system state monitoring system provided by the invention further comprises an impeller corner position monitoring device and a vibration monitoring device, and the monitoring of tower vibration and the impeller corner position are combined, so that the unbalanced problem or other faults of the impeller are monitored, and the wind turbine generator system is high in operation safety. According to the invention, the wind turbine generator is monitored by a plurality of monitoring means, so that the monitoring effect is good and the safety is high.
3. The tower barrel lamp ring comprises the arc-shaped groove, the cable, the lamp belt and the like, is simple in structure and convenient to install, and the mounting support is of a telescopic structure, so that the application requirements of towers with different diameters can be met; the cable groove and the lamp groove are arranged in the arc groove, the cable groove is located in the arc groove, the lamp groove is located outside, the upper surface of the bottom plate of the arc groove is an inclined surface with high inner side and low outer side, the lamp belt is conveniently shot by the high-definition camera, the bottoms of the outer edges of the cable groove and the lamp groove are provided with the drainage groove and the drainage hole, and liquid water is prevented from accumulating inside.
Drawings
FIG. 1 is an installation schematic diagram of a wind turbine generator system state monitoring system provided by the invention;
FIG. 2 is a schematic diagram of a laser spot lamp according to the present invention;
FIG. 3 is a plan view showing the structure of a body of the laser spotlight according to the present invention;
FIG. 4 is a schematic view of a first tower light ring of the present invention;
FIG. 5 is an enlarged view of a portion of FIG. 4;
FIG. 6 is a schematic diagram of a first tower light ring according to the present invention;
FIG. 7 is a second schematic diagram of a first tower light ring according to the present invention;
FIG. 8 is a schematic view of an installation of the vane wheel angular position monitoring device of the present invention;
FIG. 9 is a second schematic view of an installation of the vane wheel angular position monitoring device of the present invention;
in the figure: 100-Point A, 200-Point B, 300-Point C, 400-Point O 1 500-circle O 1 600-Point O 2 700-circle O 2 800-the plane where the monitoring direction axes of the two acceleration sensors are located, 900-the rotation central axis of the impeller;
the high-definition camera, the 2-laser spotlight, the 21-lamp body, the 22-support, the 31-mounting bracket, the 311-outer bracket, the 312-inner bracket, the 313-fastening bolt, the 32-cable, the 33-lamp strip, the 34-cable slot, the 35-lamp strip slot, the 36-drainage slot, the 37-drainage hole, the 4-vibration sensor, the 5-first acceleration sensor, the 6-second acceleration sensor and the 7-first blade.
Detailed Description
The invention will now be described in more detail with reference to the drawings and examples.
The invention provides a wind turbine generator system state monitoring system which comprises a video clearance monitoring device, a vibration monitoring device, an impeller corner position monitoring device and a central processing unit, wherein the video clearance monitoring device, the vibration monitoring device and the impeller corner position monitoring device are all connected with the central processing unit, and monitored signals are transmitted to the central processing unit.
Specifically, the video clearance monitoring device, the vibration monitoring device, the impeller corner position monitoring device and the central processing unit (not shown in the figure) are all connected with the tower bottom cabinet at the bottom of the tower barrel, so that electric energy is obtained.
The video clearance monitoring device in this embodiment includes high definition digtal camera 1, light filling lamp, tower down lamp ring and light controller, and wherein high definition digtal camera installs in the cabin bottom and is located the position between tower section of thick bamboo and the blade to shoot blade, the image information of tower section of thick bamboo, high definition digtal camera is connected through wired or wireless mode with central processing unit, thereby gives central processing unit with image information transmission, as shown in fig. 1.
The light filling lamp is installed in the cabin bottom and is located the nearby department of high definition digtal camera, specifically, the light filling lamp is laser shot-light 2, see fig. 1. The laser spot light comprises a lamp body 21 and a holder 22, as shown in fig. 2 and 3. The lamp body is connected to the support, and the support is installed in the cabin bottom through the bolt, and the angle between lamp body and the support is adjusted according to the demand of shining the blade point. Further, the support is hinged with the lamp body, the angle between the lamp body and the support is adjusted through the bolt connected at the hinged position, see fig. 2, and a plurality of lamp sources are arranged in the lamp body of the laser spotlight side by side, see fig. 3.
The tower down lamp ring is provided with two in this embodiment, is first tower down lamp ring and second tower down lamp ring respectively, and two tower down lamp rings are all installed on the tower section of thick bamboo, and the mounted position of two tower down lamp rings satisfies following condition: the centers of the two tower tube lamp rings are coincident with the central axis of the tower tube, the first tower tube lamp ring is aligned with a point A100 in the height direction, and the second tower tube lamp ring is aligned with a point B200 in the height direction, as shown in figure 1;
the method for determining the point A comprises the following steps: turning a normal blade to the lowest point to obtain the central point O of the blade root 1 400 as the center of a circle, point O 1 The length of the line connected with the blade tip point C300 is the radius to form a circle O 1 500, circle O 1 The intersection point of the projection of the tower barrel in the vertical direction is A;
the method for determining point B: turning a blade in a normal state to the lowestThe point takes the position point with higher risk of breaking problem in the simulation analysis of the blade strength or the position point with the largest breaking problem in the prior blade breaking accident as the circle center O 2 In point O 2 600 and blade tip point C are connected by radius circle O 2 700, circle O 2 And the intersection point of the projection of the tower barrel in the vertical direction is B.
The light supplementing lamp and the two tower lamp rings are connected with a light controller (not shown in the figure), a light sensor and a first data acquisition instrument are arranged in the light controller, the first data acquisition instrument is connected with the central processing unit, the light sensor monitors the environmental light intensity data, the first data acquisition instrument acquires the data monitored by the light sensor and transmits the data to the light sensor and the central processing unit in a wired or wireless mode, and when the environmental light intensity is lower than a set threshold value, the light controller controls the light supplementing lamp and the tower lamp rings to be started; specifically, the light supplementing lamp and the two tower tube lamp rings are respectively provided with a light controller for controlling the light supplementing lamp and the two tower tube lamp rings.
Specifically, the two tower tube lamp rings have the same structure, taking the first tower tube lamp ring as an example, the first tower tube lamp ring comprises a mounting bracket 31, an arc-shaped groove, a cable 32 and a lamp belt 33, the arc-shaped groove is mounted on the tower tube through the mounting bracket, a cable groove 34 and a lamp belt groove 35 are arranged on the arc-shaped groove, the cable groove is positioned at the inner side, and the lamp belt groove is positioned at the outer side; the cable is installed on the cable trough, the lamp belt is installed on the lamp trough, and the cable is connected with the lamp belt, as shown in fig. 4 and 5. In this embodiment, a solar power source (not shown in the figure) is connected to the arc-shaped groove, and the solar power source is connected to the cable to supply power to the lamp strip.
Further, the bottoms of the outer edges of the cable duct and the lamp duct are respectively provided with an annular drain duct 36 and drain holes 37 distributed at intervals in an annular shape, as shown in fig. 6, so that liquid water can be prevented from being accumulated in the cable duct and the lamp duct. The lower surface of the bottom plate of the arc-shaped groove is a horizontal surface, the upper surface of the bottom plate is an inclined surface with high inner side and low outer side, and the angle range between the upper surface and the lower surface is 0.5-3 degrees, as shown in fig. 7, the lamp strip is beneficial to drainage and shooting by the high-definition camera. The installing support is between annular interval distribution connection Yu Datong and the arc groove, and the installing support includes outer support 311 and inner support 312, but outer support and inner support telescopic connection, in the outer support stretched into the inner support in this embodiment, but telescopic length adjustment between the two, and fix through fastening bolt 313 between the two, see fig. 6 and 7 to satisfy the tower section of thick bamboo application demand of equidimension diameter not. Specifically, the inner support is fixed on the outer wall of the tower barrel in a bonding or magnetic attraction mode, and the outer support is fixedly connected with the lower surface of the bottom of the arc-shaped groove in a welding or bonding mode, so that the arc-shaped groove can be supported. In order to facilitate the installation of the arc-shaped groove, the arc-shaped groove can be formed by splicing a plurality of arc-shaped stages.
In this embodiment, the vibration monitoring device is installed in the central position of the top of Yu Datong, the vibration monitoring device includes a vibration sensor 4 and a second data acquisition instrument (not shown in the figure), the vibration sensor is installed in the central position of the top of the tower, see fig. 1, the vibration sensor is connected with the second data acquisition instrument, the second data acquisition instrument is connected with the central processing unit, the vibration sensor monitors the vibration acceleration, the vibration speed and the vibration displacement data of the tower, and the second data acquisition instrument acquires the data monitored by the vibration sensor and transmits the data to the central processing unit.
The impeller corner position monitoring device is arranged in the blade root hub and used for determining the corner position of the impeller and the position of each blade; the impeller corner position monitoring device comprises a first acceleration sensor 5, a second acceleration sensor 6 and a third data acquisition instrument (not shown in the figure), wherein the installation positions of the two acceleration sensors meet the following conditions, and the two acceleration sensors are specifically shown in fig. 8 and 9:
a1, the first acceleration sensor and the second acceleration sensor are positioned on the circumference taking the rotation center of the impeller as the center of a circle, and an included angle of 90 degrees is formed between the first acceleration sensor and the second acceleration sensor;
a2, the plane 800 where the axes of the monitoring directions of the two acceleration sensors are positioned is perpendicular to the rotation central axis of the impeller, and the intersection point of the two axes is on the rotation central axis of the impeller;
a3, the monitoring direction axis of the first acceleration sensor is arranged in the plane where the blade root flange axis of the first blade 7 and the rotation central axis 900 of the impeller are located, namely the rotation central axes of the impeller and the two acceleration sensors are on the same straight line;
the first acceleration sensor and the second acceleration sensor are connected with a third data acquisition instrument, the third data acquisition instrument is connected with the central processing unit, the third data acquisition instrument acquires data monitored by the two acceleration sensors and transmits the data to the central processing unit, and the current rotation angle position of the impeller and the position of each blade can be determined.
The monitoring method of the wind turbine generator system state monitoring system provided by the invention comprises the following steps: s1, the light sensor monitors the intensity of ambient light in real time, and transmits the ambient light intensity data to a light controller and a central processing unit through a first data acquisition instrument; when the intensity of the ambient light is lower than a set threshold, the light controller turns on the two tower tube lamp rings and the light supplementing lamp so as to ensure that higher discernment can be provided at night or in other environments with darker light; when the intensity of the ambient light is higher than a set threshold, the light controller turns off the two tower tube lamp rings and the light supplementing lamp;
s2, in the running process of the wind turbine generator, the high-definition camera shoots image information of the blades and the tower in real time and transmits the image information to the central processing unit; the CPU stores and analyzes the received images, and the analysis and judgment method is as follows:
s2.1, analyzing an image by image processing software in the central processing unit, and if the light intensity data signals received by the central processing unit show that the two tower lamp rings are not started, identifying the two tower lamp rings by the image processing software in the central processing unit according to the real object annular characteristics of the first tower lamp ring and the second tower lamp ring; if the light intensity data signals received by the central processing unit show that the tower tube lamp rings are started, the image processing software in the central processing unit identifies two tower tube lamp rings according to the shape characteristics (namely the shape characteristics of the lamp bands) and the brightness characteristics of the first tower tube lamp ring and the second tower tube lamp ring;
s2.2, the image processing software in the central processing unit recognizes the blade tip according to the shape characteristics and gray level contrast of the blade tip;
s2.3 the central processing unit is used for controlling the blade tip according to the bladeThe pixel distances of the first tower tube lamp ring and the second tower tube lamp ring are respectively calculated to obtain the distance L between the tip of the blade and the first tower tube lamp ring 1 Distance L between blade tip and second tower lamp ring 2 When L 1 Is larger than the distance between the blade tip and the first tower tube lamp ring, and L 2 When the distance between the blade tip and the second tower lamp ring is larger than the set threshold value, the tower clearance can be considered normal; if any one of the two conditions reaches a set threshold value, the central processing unit sends out a tower clearance small early warning;
s3, when the impeller of the wind turbine rotates, two acceleration sensors in the impeller rotation angle position monitoring device monitor acceleration data in real time, a third data acquisition instrument acquires the data monitored by the two acceleration sensors and transmits the data to a central processing unit in a wired or wireless mode, and the central processing unit analyzes and calculates the acceleration data to obtain the real-time rotation speed of the impeller and the real-time positions of three blades;
s4, in the running process of the wind turbine, the vibration monitoring device monitors vibration information of the top of the tower in real time and transmits the vibration information to the central processing unit through the second data acquisition instrument; the central processing unit combines the impeller corner position information, and marks vibration data of the top of the tower once every 5 degrees of rotation of the impeller from the position where a certain blade is positioned at the lowest position, and if the vibration data difference value reaches a set threshold value at two corner positions which are separated by 120-degree integer multiples under the same wind speed and within 1 minute, the situation that serious impeller unbalance problem or other faults exist is indicated, and the central processing unit sends out early warning.
Claims (10)
1. The utility model provides a wind turbine generator system state monitoring system, includes video headroom monitoring device and the central processing unit that is connected at least, its characterized in that: the video clearance monitoring device comprises a high-definition camera, a light supplementing lamp, a tower lamp ring and a light controller, wherein the high-definition camera is arranged at the bottom of the engine room and positioned between the tower and the blades, and shoots image information of the blades and the tower, the high-definition camera is connected with a central processing unit, and the light supplementing lamp is arranged at the bottom of the engine room and positioned near the high-definition camera; the light supplementing lamp and the tower tube lamp ring are connected with a light controller, a light sensor and a first data acquisition instrument are arranged in the light controller, the first data acquisition instrument is connected with a central processing unit, the light sensor monitors environmental light intensity data, the first data acquisition instrument acquires the data monitored by the light sensor and transmits the data to the light sensor and the central processing unit, and when the environmental light intensity is lower than a set threshold value, the light controller controls the light supplementing lamp and the tower tube lamp ring to be started;
the tower down lamp ring is provided with two, is first tower down lamp ring and second tower down lamp ring respectively, and two tower down lamp rings are all installed on the tower section of thick bamboo, and the mounted position of two tower down lamp rings satisfies following condition: the centers of the two tower tube lamp rings are coincident with the central axis of the tower tube, the first tower tube lamp ring is aligned with the point A in the height direction, and the second tower tube lamp ring is aligned with the point B in the height direction;
the method for determining the point A comprises the following steps: turning a normal blade to the lowest point to obtain the central point O of the blade root 1 With the point O as the center of a circle 1 The length of the line connected with the point C of the blade tip is the radius to form a circle O 1 Circle O 1 The intersection point of the projection of the tower barrel in the vertical direction is A;
the method for determining point B: turning a normal blade to the lowest point, taking the position point with higher risk of breaking problem in the blade strength simulation analysis or the position point with the largest breaking problem in the past blade breaking accident as the circle center O 2 In point O 2 The length of the line connected with the point C of the blade tip is the radius to form a circle O 2 Circle O 2 And the intersection point of the projection of the tower barrel in the vertical direction is B.
2. The wind turbine condition monitoring system of claim 1, wherein: the wind turbine generator system state monitoring system further comprises a vibration monitoring device and an impeller corner position monitoring device, wherein the vibration monitoring device is arranged at the central position of the top of Yu Datong and monitors vibration acceleration, vibration speed and vibration displacement data of the tower in real time; the impeller corner position monitoring device is arranged in the blade root hub and used for determining the corner position of the impeller and the position of each blade;
the video clearance monitoring device, the vibration monitoring device, the impeller corner position monitoring device and the central processing unit are all connected with a tower bottom cabinet at the bottom of the tower barrel to obtain electric energy.
3. The wind turbine condition monitoring system of claim 2, wherein: the vibration monitoring device comprises a vibration sensor and a second data acquisition instrument, wherein the vibration sensor is arranged at the center of the top of the tower, the vibration sensor is connected with the second data acquisition instrument, the second data acquisition instrument is connected with the central processing unit, the vibration sensor monitors vibration acceleration, vibration speed and vibration displacement data of the tower, and the second data acquisition instrument acquires data monitored by the vibration sensor and transmits the data to the central processing unit.
4. The wind turbine condition monitoring system of claim 2, wherein: the impeller corner position monitoring device comprises a first acceleration sensor, a second acceleration sensor and a third data acquisition instrument, wherein the installation positions of the two acceleration sensors meet the following conditions:
a1, the first acceleration sensor and the second acceleration sensor are positioned on the circumference taking the rotation center of the impeller as the center of a circle, and an included angle of 90 degrees is formed between the first acceleration sensor and the second acceleration sensor;
a2, the plane of the axes of the monitoring directions of the two acceleration sensors is perpendicular to the rotation central axis of the impeller, and the intersection point of the two axes is on the rotation central axis of the impeller;
a3, the monitoring direction axis of the first acceleration sensor is arranged in a plane where the blade root flange axis of the first blade and the rotation central axis of the impeller are located;
the first acceleration sensor and the second acceleration sensor are connected with a third data acquisition instrument, the third data acquisition instrument is connected with the central processing unit, and the third data acquisition instrument acquires data monitored by the two acceleration sensors and transmits the data to the central processing unit.
5. The wind turbine condition monitoring system of claim 1, wherein: the light supplementing lamp is a laser spotlight, the laser spotlight comprises a lamp body and a support, the lamp body is connected to the support, the support is arranged at the bottom of the engine room, and the angle between the lamp body and the support is adjusted according to the requirement of irradiating the blade tip.
6. The wind turbine condition monitoring system of claim 1, wherein: the two tower tube lamp rings are consistent in structure and comprise a mounting bracket, an arc-shaped groove, a cable and a lamp belt, wherein the arc-shaped groove is mounted on the tower tube through the mounting bracket, the arc-shaped groove is provided with the cable groove and the lamp belt groove, the cable groove is positioned at the inner side, and the lamp belt groove is positioned at the outer side; the cable is installed on the cable trough, the lamp belt is installed on the lamp trough, and the cable is connected with the lamp belt.
7. The wind turbine condition monitoring system of claim 6, wherein: the lower surface of the bottom plate of the arc-shaped groove is a horizontal surface, the upper surface of the bottom plate is an inclined surface with high inner side and low outer side, the angle range between the upper surface and the lower surface is 0.5-3 degrees, and annular drainage grooves and drainage holes distributed at intervals are arranged at the bottoms of the outer edges of the cable groove and the lamp groove.
8. The wind turbine condition monitoring system of claim 6, wherein: the arc-shaped groove is connected with a solar power supply, and the solar power supply is connected with a cable to supply power for the lamp strip.
9. The wind turbine condition monitoring system of claim 6, wherein: the installing support is between annular interval distribution connection Yu Datong and the arc groove, and the installing support includes outer support and inner support, but outer support and inner support telescopic connection, the inner support is fixed on the tower section of thick bamboo outer wall, outer support and arc groove fixed connection.
10. A method of monitoring a wind turbine condition monitoring system according to claim 2, comprising the steps of: s1, the light sensor monitors the intensity of ambient light in real time, and transmits the ambient light intensity data to a light controller and a central processing unit through a first data acquisition instrument; when the intensity of the ambient light is lower than a set threshold value, the light controller turns on the two tower tube lamp rings and the light supplementing lamp, and when the intensity of the ambient light is higher than the set threshold value, the light controller turns off the two tower tube lamp rings and the light supplementing lamp;
s2, in the running process of the wind turbine generator, the high-definition camera shoots image information of the blades and the tower in real time and transmits the image information to the central processing unit; the CPU stores and analyzes the received images, and the analysis and judgment method is as follows:
s2.1, analyzing an image by image processing software in the central processing unit, and if the light intensity data signals received by the central processing unit show that the two tower lamp rings are not started, identifying the two tower lamp rings by the image processing software in the central processing unit according to the real object annular characteristics of the first tower lamp ring and the second tower lamp ring; if the light intensity data signals received by the central processing unit show that the tower tube lamp rings are started, the image processing software in the central processing unit identifies the two tower tube lamp rings according to the shape characteristics and the brightness characteristics of the first tower tube lamp ring and the second tower tube lamp ring;
s2.2, the image processing software in the central processing unit recognizes the blade tip according to the shape characteristics and gray level contrast of the blade tip;
s2.3, the central processing unit calculates the distance L between the blade tip and the first tower lamp ring according to the pixel distances between the blade tip and the first tower lamp ring and the pixel distances between the blade tip and the second tower lamp ring 1 Distance L between blade tip and second tower lamp ring 2 When L 1 Is larger than the distance between the blade tip and the first tower tube lamp ring, and L 2 When the distance between the blade tip and the second tower lamp ring is larger than the set threshold value, the tower clearance can be considered normal; if any one of the two conditions reaches a set threshold value, the central processing unit sends out a tower clearance small early warning;
s3, when the impeller of the wind turbine rotates, the impeller rotation angle position monitoring device monitors acceleration data in real time, the third data acquisition instrument transmits the acquired data to the central processing unit, and the central processing unit analyzes and calculates the acceleration data to obtain the real-time rotation speed of the impeller and the real-time positions of the three blades;
s4, in the running process of the wind turbine, the vibration monitoring device monitors vibration information of the top of the tower in real time and transmits the vibration information to the central processing unit through the second data acquisition instrument; the central processing unit combines the impeller corner position information, and marks vibration data of the top of the tower once every 5 degrees of rotation of the impeller from the position where a certain blade is positioned at the lowest position, and if the vibration data difference value reaches a set threshold value at two corner positions which are separated by 120 degrees by integer multiples under the same wind speed and within 1 minute of time, the central processing unit sends out early warning.
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| CN117404261A (en) * | 2023-12-15 | 2024-01-16 | 中国海洋大学 | Marine wind power tower barrel modal identification system and method based on vision and vibration perception |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117404261A (en) * | 2023-12-15 | 2024-01-16 | 中国海洋大学 | Marine wind power tower barrel modal identification system and method based on vision and vibration perception |
| CN117404261B (en) * | 2023-12-15 | 2024-03-26 | 中国海洋大学 | Marine wind power tower barrel modal identification system and method based on vision and vibration perception |
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