CN113464379A - Floating type offshore wind turbine generator set operation state monitoring method - Google Patents

Floating type offshore wind turbine generator set operation state monitoring method Download PDF

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Publication number
CN113464379A
CN113464379A CN202110810994.3A CN202110810994A CN113464379A CN 113464379 A CN113464379 A CN 113464379A CN 202110810994 A CN202110810994 A CN 202110810994A CN 113464379 A CN113464379 A CN 113464379A
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axis
variable pitch
angle
impeller
blade
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CN113464379B (en
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蔡云龙
王东利
程庆阳
董兆宇
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Shaanxi Zhongke Qihang Technology Co ltd
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Shaanxi Zhongke Qihang Technology Co ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D17/00Monitoring or testing of wind motors, e.g. diagnostics
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D7/00Controlling wind motors 
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction

Abstract

The invention provides a floating type offshore wind turbine generator set operation state monitoring method, wherein pose monitoring devices are respectively installed at the bottom of a tower barrel, inside a cabin and a hub, collected monitoring data are transmitted to a main control cabinet processor, the cabin cabinet processor and a variable pitch control cabinet processor, and the main control cabinet processor, the cabin cabinet processor and the variable pitch control cabinet processor carry out logic judgment according to the monitoring data and execute correction operation in time. The method for monitoring the running state of the floating offshore wind turbine can monitor the state data of the floating foundation, the engine room and the impeller of the wind turbine in real time, correct the data in time when the state exceeds the preset safety range, and the adopted pose monitoring device has mature neutron module technology, low cost and convenient installation and implementation and can realize full-automatic processing of acquisition, monitoring and problem correction.

Description

Floating type offshore wind turbine generator set operation state monitoring method
Technical Field
The invention relates to a floating type monitoring method for an operation state of an offshore wind turbine generator, and belongs to the technical field of wind turbine generator monitoring.
Background
The wind turbine generator is a device which drives a wind driven generator to rotate by the windward rotation of an impeller, converts wind energy into mechanical energy and then converts the mechanical energy into electric energy. In the operation process of the wind turbine generator, the blade pitch angle and the yaw direction need to be adjusted in real time, so that wind energy is utilized to the maximum extent, the generation hours are increased, and loads of main components of the wind turbine generator are reduced. The wind turbine generator system has a severe working environment, and under the action of external conditions such as constantly changing wind speed and direction, wind shear, tower shadow effect, turbulence and the like, a wind speed and direction sensor, a pitch system, a master control system and the like may break down, so that pitch yaw failure or deviation is further caused to be overlarge, finally, the rotation imbalance of an impeller, the yaw error exceeds the standard, and the loads of blades, a hub, a cabin and a tower drum are overlarge and other failure risks may be caused.
In recent years, wind turbine generators are continuously developed towards large-scale, intelligent and offshore floating type, and the failure rate of offshore wind turbine generators is generally far higher than that of onshore wind turbine generators due to the action of external adverse environmental conditions such as sea waves, sea currents, high salt fog, typhoons and the like. In addition, offshore wind turbines are far off the shore, and the maintenance is greatly limited by environmental conditions such as sea waves and sea wind, and is difficult. The existing online fault monitoring system generally feeds back whether the wind turbine generator fails or not by monitoring state parameters of vibration, strain, cracks, temperature, rotating speed and the like of main components of the wind turbine generator, but the monitoring method can monitor abnormal data of the main components after the main components are abnormal due to certain faults of a wind speed and direction sensing system, a pitch system and a main control system, has certain hysteresis, cannot directly reflect abnormal component states due to certain reasons, and has certain limitation on actual application effect.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides a method for monitoring the running state of a floating offshore wind turbine, which can monitor the state data of a floating foundation, a cabin and an impeller of the wind turbine in real time and correct the state data in time when the state exceeds a preset safety range.
The technical scheme adopted by the invention for solving the technical problem is as follows: the method for monitoring the running state of the floating offshore wind turbine generator comprises the following steps:
s1, mounting 1 position posture monitoring device respectively at the bottom of a tower barrel, in an engine room and in a hub, namely a first position posture monitoring device, a second position posture monitoring device and a third position posture monitoring device, wherein the position posture monitoring devices are packaged with an Inertial Measurement Unit (IMU), a dual-antenna GNSS (Global Navigation Satellite System) positioning and orientation receiver and a gravity acceleration sensor;
s2, the first data acquisition instrument, the second data acquisition instrument and the third data acquisition instrument respectively acquire monitoring data of an inertia measurement device, a double-antenna GNSS positioning and orientation receiver and a gravity acceleration sensor in 3 attitude monitoring devices, and then respectively transmit the monitoring data to a main control cabinet processor, a cabin cabinet processor and a variable pitch control cabinet processor;
and S3, the main control cabinet processor, the cabin cabinet processor and the pitch control cabinet processor perform logic judgment according to the monitoring data and execute correction operation in time.
In step S1, the first position and orientation monitoring device is installed at the center of the bottom of the tower, and when the tower is in a stable state, x of the inertia measuring device in the first position and orientation monitoring device1The axis being along the length of the nacelle, y1The shaft is vertical to the bottom plane of the tower; the second position and posture monitoring device is arranged in the cabin and is right opposite to the center of the top of the tower, and the x of the inertia measuring device in the second position and posture monitoring device2The axis being along the length of the nacelle, y2The shaft is vertical to the top plane of the tower; the third posture monitoring device is arranged on the rotating axis of the impeller in the hub, and the x of the inertia measuring device in the third posture monitoring device3The shaft being in the direction of the axis of rotation of the impeller, y3The shaft points to one of the blades, which is designated the first blade, and the other two blades are designated the second and third blades in turn in the clockwise direction.
The first data acquisition instrument is located at the bottom of the tower barrel, the second data acquisition instrument is located in the engine room, and the third data acquisition instrument is located in the wheel hub.
In step S2, the inertial measurement unit in the first attitude monitoring device monitors the floating foundation of the wind turbine generator set in x in real time1、y1And z1Linear acceleration in three axial directions, and floating foundation around x1Axis, y1Axis and z1Processing the angular acceleration data of the shaft to obtain the floating foundation in x1Axis, y1Axis and z1Speed and displacement of shaft, and floating foundation x1Axis, y1Axis and z1Speed and angle of shaft rotation; a double-antenna GNSS positioning and orienting receiver in the first position and orientation monitoring device monitors the displacement speed and position data of the floating foundation in real time; a gravity acceleration sensor in the first position and posture monitoring device monitors the gravity acceleration change of the floating type base position in real time; the first data acquisition instrument acquires monitoring data of the first attitude monitoring device and transmits the monitoring data to a main control cabinet processor at the bottom of the tower;
inertia measuring device in second attitude monitoring device for monitoring x of cabin in real time2Axis, y2Axis and z2Linear acceleration of the shaft in three directions, and the nacelle's x-axis2Axis, y2Axis and z2Angular acceleration data of the shaft is processed to obtain the x of the engine room2Axis, y2Axis and z2Speed and displacement of the shaft in three directions, and the nacelle's x-axis2Axis, y2Axis and z2Speed and angle of shaft rotation; a double-antenna GNSS positioning and orienting receiver in the second attitude monitoring device monitors the displacement speed and the position data of the engine room in real time; a gravity acceleration sensor in the second attitude monitoring device monitors the gravity acceleration change of the cabin position in real time; the second data acquisition instrument acquires monitoring data of the second attitude monitoring device and transmits the monitoring data to the cabin cabinet processor;
inertia measuring device in third position monitoring device monitors impeller in x in real time3Axis, y3Axis and z3Linear acceleration of the shaft in three directions, and the impeller's rotation about x3Axis, y3Axis and z3Angular acceleration data of the shaft is processed to obtain the x of the impeller3Axis, y3Axis and z3Speed and displacement of the shaft in three directions, and the impeller's rotation about x3Axis, y3Axis and z3Speed and angle of shaft rotation; a double-antenna GNSS positioning and orienting receiver in the third posture monitoring device monitors the displacement speed and the position data of the impeller in real time; a gravity acceleration sensor in the third posture monitoring device monitors the gravity acceleration change of the position of the impeller in real time; and the third data acquisition instrument acquires the monitoring data of the third posture monitoring device and transmits the monitoring data to the impeller cabinet processor.
In step S3, the main control cabinet processor, the nacelle cabinet processor, and the pitch control cabinet processor store and analyze the collected data, and execute operations according to the following logic:
s3.1, monitoring the floating foundation by sea wave impact: when floating foundation along z1Angle of rotation | phi (z)1) L or along x1Shaft angle | phi (x)1) When the sea wave impact force on the floating foundation reaches a set threshold value, the main control cabinet processor sends early warning information to the cabin cabinet processor, the cabin cabinet processor sends early warning information to the pitch control cabinet processor, the pitch control cabinet processor sends a pitch receiving action signal to a pitch control system after receiving the early warning information, and the pitch control mechanism executes a pitch receiving action and stops the machine;
s3.2, impeller thrust monitoring: the main control cabinet processor processes the data monitored by the first position and posture monitoring device to obtain a floating foundation winding x1Axis, y1Axis and z1The rotation angles of the shafts are respectively denoted as phi (x)1)、φ(y1) And phi (z)1) The nacelle edge y2The shaft angle, i.e. the nacelle yaw angle, is recorded as phi (y)2) Let x1Axis, y1Axis and z1Yaw angle phi (y) of axis along nacelle2) The coordinate axes obtained after deflection are respectively x1' Axis, y1' Axis and z1' Axis, wound around x according to a floating foundation1Axis, y1Axis and z1Angle of rotation phi (x) of the shaft1)、φ(y1) And phi (z)1) Derived out ofFloating foundation along x1' Axis, y1' Axis and z1' rotation angle of shaft phi (x)1’)、φ(y1') and phi (z)1') along z, and nacelle edge z2Angle of rotation | phi (z)2)-φ(z1') when reaching the set threshold, the impeller thrust that the cabin received surpasses the design scope, and the master control cabinet treater sends early warning information to become oar switch board treater this moment, becomes oar switch board treater and sends out the action signal of receiving oar to become oar system after receiving early warning information, becomes oar mechanism and carries out the action of receiving the oar, increases and becomes oar angle, until the cabin along z2The shaft rotation angle is reduced to be within a reasonable design range, and the pitch control mechanism stops the pitch retracting action;
s3.3, deviation angle of the engine room, the impeller and the wind direction: by yawing the nacelle by an angle phi (y)2) Comparing and analyzing the data with wind direction sensor data collected by the main control cabinet to obtain deviation angles of the engine room, the impeller and the wind direction, if the deviation angles reach a set threshold value, sending early warning information to a yaw system of the main control cabinet by a processor of the main control cabinet, sending a yaw action signal to a yaw mechanism after the yaw system receives the early warning information, executing a yaw action by the yaw mechanism, reducing the deviation angles of the engine room, the impeller and the wind direction until the deviation angles of the engine room, the impeller and the wind direction are reduced to a reasonable design area, and stopping the yaw action by the yaw mechanism;
s3.4, monitoring the rotation balance of the impeller: the main control cabinet processor processes the data monitored by the first position and posture monitoring device and respectively follows x according to the floating foundation1' Axis, y1' Axis and z1' rotation angle of shaft phi (x)1’)、φ(y1') and phi (z)1'), nacelle edge y2Shaft angle phi (y)2) Nacelle edge z2Angle of rotation phi (z)2) And the impeller edge y3Angle of rotation phi (y) of the shaft3) Along z3Angle of rotation phi (z) of the shaft3) Order:
ψ(y3)=φ(y3)-φ(y2)-φ(y1’),
ψ(z3)=φ(z3)-φ(z2)-φ(z1’),
phi (y)3) Is the impeller edge y3Correction angle of axial rotation, psi (z)3) Is the impeller edge z3Correction angle of axial rotation,. phi (y)3)、ψ(z3) And comparing and analyzing with a set value, and executing the operation according to the following logic:
A. if the impeller is along y3Correction angle psi (y) of axial rotation3) Winding y with right-hand rule indication3The deflection angle of the positive rotation direction of the shaft reaches a set threshold value, which shows that y3The load on the right side of the shaft is larger than the load on the left side, at the moment, the variable pitch control cabinet processor sends early warning information to the variable pitch system, after the variable pitch system verifies the variable pitch angles of the second blade and the third blade, the variable pitch mechanism executes variable pitch operation, and the variable pitch angle of the second blade is increased or the variable pitch angle of the third blade is reduced, or the variable pitch angle of the second blade is increased and the variable pitch angle of the third blade is reduced at the same time;
B. if the impeller is along y3Correction angle psi (y) of axial rotation3) Winding y with right-hand rule indication3The deflection angle of the negative rotation direction of the shaft reaches a set threshold value, which shows that y3The left side load of the shaft is larger than the right side load, the variable pitch control cabinet processor sends early warning information to the variable pitch system, after the variable pitch system verifies the variable pitch angles of the second blade and the third blade, the variable pitch mechanism executes variable pitch operation, and the variable pitch angle of the second blade is reduced or the variable pitch angle of the third blade is increased, or the variable pitch angle of the second blade is reduced and the variable pitch angle of the third blade is increased at the same time;
C. if the impeller is along z3Correction angle psi (z) of axial rotation3) Wrap z showing right hand rule indication3The deflection angle of the positive rotation direction of the shaft reaches a set threshold value, which indicates z3The load on the right side of the shaft is larger than the load on the left side, at the moment, the variable pitch control cabinet processor sends early warning information to the variable pitch system, after the variable pitch system verifies the variable pitch angles of the first blade, the second blade and the third blade, the variable pitch mechanism executes variable pitch operation, the variable pitch angle of the second blade and the third blade is increased or the variable pitch angle of the first blade is reduced, or the variable pitch angles of the second blade and the third blade are increased and the variable pitch angle of the first blade is reduced at the same time;
D. if the impeller is along z3Shaft turning toolPositive angle psi (z)3) Wrap z showing right hand rule indication3The deflection angle of the negative rotation direction of the shaft reaches a set threshold value, which shows that z3The left side load of the shaft is larger than the right side load, at the moment, the variable pitch control cabinet processor sends early warning information to the variable pitch system, after the variable pitch system verifies the variable pitch angles of the first blade, the second blade and the third blade, the variable pitch mechanism executes variable pitch operation, the variable pitch angles of the second blade and the third blade are reduced or the variable pitch angle of the first blade is increased, or the variable pitch angles of the second blade and the third blade are reduced and the variable pitch angle of the first blade is increased at the same time;
s3.5, monitoring the rotating speed of the impeller: the variable-pitch control cabinet processor processes the gravity acceleration data monitored by the third attitude monitoring device, and obtains the rotating speed of the impeller according to the gravity acceleration change data; under the condition that the original impeller rotating speed monitoring sensor fails or a slip ring fails and the main control cabinet cannot transmit impeller rotating speed control information to the variable pitch control cabinet, the variable pitch control cabinet processor is used as a reference for controlling variable pitch of the variable pitch control cabinet according to the impeller rotating speed obtained by the data monitored by the second position and posture monitoring device.
In step S3.2, the cabin cabinet processor processes the displacement speed and position data monitored by the second position and posture monitoring device to obtain the x position of the cabin2Axis and z2Axial displacement speed and position data, when the floating foundation is not impacted by sea waves to reach the set threshold value, but the engine room is in x2When the displacement speed or position data of the direction reaches a set threshold value, it is indicated that the thrust of the impeller exceeds the design range, at the moment, the main control cabinet processor sends early warning information to the variable pitch control cabinet processor, the variable pitch control cabinet processor sends a pitch collecting action signal to the variable pitch system after receiving the early warning information, the variable pitch mechanism executes a pitch collecting action, the pitch angle is reduced until the engine room is at x2And the displacement speed and the position data in the direction are reduced to a reasonable design area, and the pitch-variable mechanism stops the pitch-retracting action.
The invention has the beneficial effects based on the technical scheme that:
(1) according to the method for monitoring the running state of the floating offshore wind turbine generator, the position and posture monitoring device which is packaged with the inertia measuring device, the double-antenna GNSS positioning and orienting receiver and the gravity acceleration sensor is used for collecting the wind turbine generator data, the internal sub-modules are mature in technology, low in cost and easy to build, the state data which affect the running of the wind turbine generator can be comprehensively collected and serve as an important basis for monitoring the safety state of the wind turbine generator;
(2) the method for monitoring the running state of the floating offshore wind turbine can effectively correct the problems in the following running process: a. the problem that the floating foundation is subjected to overlarge sea wave impact force is found, early warning is timely carried out, and the machine is shut down to avoid risks; b. the problem that the impeller thrust of the floating offshore wind turbine generator exceeds the design range is found and corrected; c. the problem that the deviation angles of the floating type offshore wind turbine generator room and the impeller and the wind direction exceed the design range is found and corrected; d. the problem that the rotating unbalance of the floating type offshore wind turbine generator impeller exceeds the design range is found and corrected; e. under the condition that an original matched impeller rotating speed monitoring sensor of the wind turbine generator system fails or a slip ring fails, and the nacelle cabinet cannot transmit the impeller rotating speed control requirement or the information of the variable pitch angle required to be adjusted to the variable pitch control cabinet, the variable pitch control cabinet processor can be used as an important reference for controlling variable pitch of the variable pitch control cabinet according to the impeller rotating speed obtained by the data monitored by the third attitude monitoring device, so that the running safety of the fan is greatly improved;
(3) the method for monitoring the running state of the floating offshore wind turbine generator system provided by the invention is easy to realize full-automatic processing of data monitoring, data acquisition, data processing and problem correction.
Drawings
FIG. 1 is a schematic diagram showing the installation positions and coordinate axis orientations of 3 attitude monitoring devices.
Fig. 2 is a schematic diagram of the orientation of the coordinate axis of the third posture monitoring device.
Fig. 3 is a schematic structural view of the pose monitoring device.
Fig. 4 is a schematic diagram of arrangement of modules inside the pose monitoring device.
In the figure: 1-impeller rotation axis, 2-tower, 3-first blade, 4-second blade, 5-third blade, 6-pose monitoring device, 6.1-bolt fixing hole, 6.2-data information interface, 6.3-shell, 6.4-inertial measurement device, 6.5-double-antenna GNSS positioning and orientation receiver, 6.6-gravity acceleration sensor, 7-cabin and 8-floating foundation.
Detailed Description
The invention is further illustrated by the following figures and examples.
The invention provides a method for monitoring the running state of a floating offshore wind turbine generator, which comprises the following steps with reference to fig. 1 to 4:
s1, mounting 1 position and posture monitoring device 6 respectively at the bottom of the tower 2, inside the cabin 7 and inside the hub, namely a first position and posture monitoring device, a second position and posture monitoring device and a third position and posture monitoring device.
The pose monitoring device comprises a shell 6.3 and a processor packaged in the shell, an inertia measuring device 6.4, a double-antenna GNSS positioning and orientation receiver 6.5 and a gravity acceleration sensor 6.6, wherein the processor can be directly welded on a PCB (Printed Circuit Board), the inertia measuring device, the double-antenna GNSS positioning and orientation receiver and the gravity acceleration sensor are electrically connected with the processor through conductive circuits of the PCB respectively, the shell is provided with a data information interface 6.2 connected with the processor, and the shell is connected with a mounting plate provided with a bolt fixing hole 6.1.
Wherein, the first position and posture monitoring device is arranged at the center of the bottom of the tower, and the x of the inertia measuring device in the first position and posture monitoring device is in a stable state1The axis being along the length of the nacelle, y1The shaft is vertical to the bottom plane of the tower; the second position and posture monitoring device is arranged in the cabin and is right opposite to the center of the top of the tower, and the x of the inertia measuring device in the second position and posture monitoring device2The axis being along the length of the nacelle, y2The shaft is vertical to the top plane of the tower; the third posture monitoring device is arranged on the rotating axis 1 of the impeller in the hub, and the x of the inertia measuring device in the third posture monitoring device3The shaft being in the direction of the axis of rotation of the impeller, y3The axis is directed to one of the blades, which is denoted as the first blade 3, and the other two blades are denoted in turn as the second blade 4 and the third blade 5 in the clockwise direction.
And S2, the first data acquisition instrument, the second data acquisition instrument and the third data acquisition instrument respectively acquire monitoring data of an inertia measurement device, a double-antenna GNSS positioning and orientation receiver and a gravity acceleration sensor in the 3 attitude monitoring devices through data information interfaces, and then respectively transmit the monitoring data to the main control cabinet processor, the cabin cabinet processor and the pitch control cabinet processor.
The first data acquisition instrument is located at the bottom of the tower barrel, the second data acquisition instrument is located in the engine room, and the third data acquisition instrument is located in the wheel hub.
Floating foundation 8 of wind turbine generator system monitored in x by inertial measurement unit in first position and posture monitoring device in real time1、y1And z1Linear acceleration in three axial directions, and floating foundation around x1Axis, y1Axis and z1Processing the angular acceleration data of the shaft to obtain the floating foundation in x1Axis, y1Axis and z1Speed and displacement of shaft, and floating foundation x1Axis, y1Axis and z1Speed and angle of shaft rotation; a double-antenna GNSS positioning and orienting receiver in the first position and orientation monitoring device monitors the displacement speed and position data of the floating foundation in real time; a gravity acceleration sensor in the first position and posture monitoring device monitors the gravity acceleration change of the floating type base position in real time; the first data acquisition instrument acquires monitoring data of the first posture monitoring device and transmits the monitoring data to the main control cabinet processor at the bottom of the tower.
Inertia measuring device in second attitude monitoring device for monitoring x of cabin in real time2Axis, y2Axis and z2Linear acceleration of the shaft in three directions, and the nacelle's x-axis2Axis, y2Axis and z2Angular acceleration data of the shaft is processed to obtain the x of the engine room2Axis, y2Axis and z2Speed and displacement of the shaft in three directions, and the nacelle's x-axis2Axis, y2Axis and z2Speed and angle of shaft rotation; a double-antenna GNSS positioning and orienting receiver in the second attitude monitoring device monitors the displacement speed and the position data of the engine room in real time; gravity acceleration sensor in second position and posture monitoring deviceMonitoring the change of the gravity acceleration of the position of the cabin; and the second data acquisition instrument acquires the monitoring data of the second attitude monitoring device and transmits the monitoring data to the cabin cabinet processor.
Inertia measuring device in third position monitoring device monitors impeller in x in real time3Axis, y3Axis and z3Linear acceleration of the shaft in three directions, and the impeller's rotation about x3Axis, y3Axis and z3Angular acceleration data of the shaft is processed to obtain the x of the impeller3Axis, y3Axis and z3Speed and displacement of the shaft in three directions, and the impeller's rotation about x3Axis, y3Axis and z3Speed and angle of shaft rotation; a double-antenna GNSS positioning and orienting receiver in the third posture monitoring device monitors the displacement speed and the position data of the impeller in real time; a gravity acceleration sensor in the third posture monitoring device monitors the gravity acceleration change of the position of the impeller in real time; and the third data acquisition instrument acquires the monitoring data of the third posture monitoring device and transmits the monitoring data to the impeller cabinet processor.
S3, storing and analyzing the collected data by the main control cabinet processor, the cabin cabinet processor and the pitch control cabinet processor, performing logic judgment according to the monitored data, and executing correction operation in time, specifically executing operation according to the following logic:
s3.1, monitoring the floating foundation by sea wave impact: when floating foundation along z1Angle of rotation | phi (z)1) L or along x1Shaft angle | phi (x)1) When the sea wave impact force on the floating foundation reaches a set threshold value, the main control cabinet processor sends out early warning information to the engine room cabinet processor, the engine room cabinet processor sends out early warning information to the variable pitch control cabinet processor, the variable pitch control cabinet processor sends out a pitch collecting action signal to the variable pitch system after receiving the early warning information, and the variable pitch mechanism executes a pitch collecting action and stops the machine. According to the monitoring method, the risk that the floating foundation is subjected to overlarge sea wave impact force can be found in time, an early warning signal is sent out, and then the propeller is retracted and shut down to avoid the risk.
S3.2, impeller thrust monitoring: data monitored by the primary control cabinet processor to the first attitude monitoring deviceProcessing to obtain floating foundation winding x1Axis, y1Axis and z1The rotation angles of the shafts are respectively denoted as phi (x)1)、φ(y1) And phi (z)1) The nacelle edge y2The shaft angle, i.e. the nacelle yaw angle, is recorded as phi (y)2) Let x1Axis, y1Axis and z1Yaw angle phi (y) of axis along nacelle2) The coordinate axes obtained after deflection are respectively x1' Axis, y1' Axis and z1' Axis, wound around x according to a floating foundation1Axis, y1Axis and z1Angle of rotation phi (x) of the shaft1)、φ(y1) And phi (z)1) Calculating the respective edge x of the floating foundation1' Axis, y1' Axis and z1' rotation angle of shaft phi (x)1’)、φ(y1') and phi (z)1') along z, and nacelle edge z2Angle of rotation | phi (z)2)-φ(z1') when reaching the set threshold, the impeller thrust that the cabin received surpasses the design scope, and the master control cabinet treater sends early warning information to become oar switch board treater this moment, becomes oar switch board treater and sends out the action signal of receiving oar to become oar system after receiving early warning information, becomes oar mechanism and carries out the action of receiving the oar, increases and becomes oar angle, until the cabin along z2And when the shaft rotation angle is reduced to be within a reasonable design range, the pitch-variable mechanism stops the pitch-retracting action. According to the monitoring method, the problem that the impeller thrust exceeds the design range can be found and corrected in time.
S3.3, deviation angle of the engine room, the impeller and the wind direction: by yawing the nacelle by an angle phi (y)2) And comparing and analyzing the data with wind direction sensor data collected by the main control cabinet to obtain deviation angles of the engine room, the impeller and the wind direction, if the deviation angles reach a set threshold value, sending early warning information to a yaw system of the main control cabinet by a processor of the main control cabinet, sending a yaw action signal to a yaw mechanism after the yaw system receives the early warning information, executing a yaw action by the yaw mechanism, reducing the deviation angles of the engine room, the impeller and the wind direction until the deviation angles of the engine room, the impeller and the wind direction are reduced to a reasonable design area, and stopping the yaw action by the yaw mechanism. According to the monitoring method, the problem that the deviation angle between the cabin and the wind direction of the impeller exceeds the design range can be found and corrected in time.
S3.4, monitoring the rotation balance of the impeller: the main control cabinet processor processes the data monitored by the first position and posture monitoring device and respectively follows x according to the floating foundation1' Axis, y1' Axis and z1' rotation angle of shaft phi (x)1’)、φ(y1') and phi (z)1'), nacelle edge y2Shaft angle phi (y)2) Nacelle edge z2Angle of rotation phi (z)2) And the impeller edge y3Angle of rotation phi (y) of the shaft3) Along z3Angle of rotation phi (z) of the shaft3) Order:
ψ(y3)=φ(y3)-φ(y2)-φ(y1’),
ψ(z3)=φ(z3)-φ(z2)-φ(z1’),
phi (y)3) Is the impeller edge y3Correction angle of axial rotation, psi (z)3) Is the impeller edge z3Correction angle of axial rotation,. phi (y)3)、ψ(z3) And comparing and analyzing with a set value, and executing the operation according to the following logic:
A. if the impeller is along y3Correction angle psi (y) of axial rotation3) Winding y with right-hand rule indication3The deflection angle of the positive rotation direction of the shaft reaches a set threshold value, which shows that y3The load on the right side of the shaft is larger than the load on the left side, at the moment, the variable pitch control cabinet processor sends early warning information to the variable pitch system, after the variable pitch system verifies the variable pitch angles of the second blade and the third blade, the variable pitch mechanism executes variable pitch operation, and the variable pitch angle of the second blade is increased or the variable pitch angle of the third blade is reduced, or the variable pitch angle of the second blade is increased and the variable pitch angle of the third blade is reduced at the same time;
B. if the impeller is along y3Correction angle psi (y) of axial rotation3) Winding y with right-hand rule indication3The deflection angle of the negative rotation direction of the shaft reaches a set threshold value, which shows that y3The left side load of the shaft is larger than the right side load, the variable pitch control cabinet processor sends early warning information to the variable pitch system, the variable pitch system verifies the variable pitch angle of the second blade and the third blade, the variable pitch mechanism executes variable pitch operation, and the variable pitch of the second blade is reducedThe pitch angle of the third blade is increased, or the pitch angle of the second blade is reduced and the pitch angle of the third blade is increased;
C. if the impeller is along z3Correction angle psi (z) of axial rotation3) Wrap z showing right hand rule indication3The deflection angle of the positive rotation direction of the shaft reaches a set threshold value, which indicates z3The load on the right side of the shaft is larger than the load on the left side, at the moment, the variable pitch control cabinet processor sends early warning information to the variable pitch system, after the variable pitch system verifies the variable pitch angles of the first blade, the second blade and the third blade, the variable pitch mechanism executes variable pitch operation, the variable pitch angle of the second blade and the third blade is increased or the variable pitch angle of the first blade is reduced, or the variable pitch angles of the second blade and the third blade are increased and the variable pitch angle of the first blade is reduced at the same time;
D. if the impeller is along z3Correction angle psi (z) of axial rotation3) Wrap z showing right hand rule indication3The deflection angle of the negative rotation direction of the shaft reaches a set threshold value, which shows that z3The left side load of the shaft is larger than the right side load, at the moment, the variable pitch control cabinet processor sends early warning information to the variable pitch system, after the variable pitch system verifies the variable pitch angles of the first blade, the second blade and the third blade, the variable pitch mechanism executes variable pitch operation, the variable pitch angles of the second blade and the third blade are reduced or the variable pitch angle of the first blade is increased, or the variable pitch angles of the second blade and the third blade are reduced and the variable pitch angle of the first blade is increased at the same time;
s3.5, monitoring the rotating speed of the impeller: the variable-pitch control cabinet processor processes the gravity acceleration data monitored by the third attitude monitoring device, and obtains the rotating speed of the impeller according to the gravity acceleration change data; under the condition that the original impeller rotating speed monitoring sensor fails or a slip ring fails and the main control cabinet cannot transmit impeller rotating speed control information to the variable pitch control cabinet, the variable pitch control cabinet processor is used as a reference for controlling variable pitch of the variable pitch control cabinet according to the impeller rotating speed obtained by the data monitored by the second position and posture monitoring device.
In step S3.2, the cabin cabinet processor processes the displacement speed and position data monitored by the second position and posture monitoring device to obtain the x position of the cabin2Axis and z2In the axial directionDisplacement speed and position data, when the floating foundation is subjected to sea wave impact and does not reach a set threshold value, the cabin is in x2When the displacement speed or position data of the direction reaches a set threshold value, it is indicated that the thrust of the impeller exceeds the design range, at the moment, the main control cabinet processor sends early warning information to the variable pitch control cabinet processor, the variable pitch control cabinet processor sends a pitch collecting action signal to the variable pitch system after receiving the early warning information, the variable pitch mechanism executes a pitch collecting action, the pitch angle is reduced until the engine room is at x2And the displacement speed and the position data in the direction are reduced to a reasonable design area, and the pitch-variable mechanism stops the pitch-retracting action. Can be used as a backup and auxiliary scheme for monitoring impeller thrust.
The method for monitoring the running state of the floating offshore wind turbine can monitor the state data of the floating foundation, the engine room and the impeller of the wind turbine in real time, correct the data in time when the state exceeds the preset safety range, and the adopted pose monitoring device has mature neutron module technology, low cost and convenient installation and implementation and can realize full-automatic processing of acquisition, monitoring and problem correction.

Claims (6)

1. A method for monitoring the running state of a floating offshore wind turbine generator is characterized by comprising the following steps:
s1, mounting 1 position and posture monitoring devices respectively at the bottom of the tower, in the cabin and in the hub, wherein the position and posture monitoring devices are a first position and posture monitoring device, a second position and posture monitoring device and a third position and posture monitoring device, and the position and posture monitoring devices are packaged with an inertial measurement unit, a double-antenna GNSS positioning and orientation receiver and a gravity acceleration sensor;
s2, the first data acquisition instrument, the second data acquisition instrument and the third data acquisition instrument respectively acquire monitoring data of an inertia measurement device, a double-antenna GNSS positioning and orientation receiver and a gravity acceleration sensor in 3 attitude monitoring devices, and then respectively transmit the monitoring data to a main control cabinet processor, a cabin cabinet processor and a variable pitch control cabinet processor;
and S3, the main control cabinet processor, the cabin cabinet processor and the pitch control cabinet processor perform logic judgment according to the monitoring data and execute correction operation in time.
2. The method for monitoring the operating state of a floating offshore wind turbine according to claim 1, characterized in that: in step S1, the first position and orientation monitoring device is installed at the center of the bottom of the tower, and when the tower is in a stable state, x of the inertia measuring device in the first position and orientation monitoring device1The axis being along the length of the nacelle, y1The shaft is vertical to the bottom plane of the tower; the second position and posture monitoring device is arranged in the cabin and is right opposite to the center of the top of the tower, and the x of the inertia measuring device in the second position and posture monitoring device2The axis being along the length of the nacelle, y2The shaft is vertical to the top plane of the tower; the third posture monitoring device is arranged on the rotating axis of the impeller in the hub, and the x of the inertia measuring device in the third posture monitoring device3The shaft being in the direction of the axis of rotation of the impeller, y3The shaft points to one of the blades, which is designated the first blade, and the other two blades are designated the second and third blades in turn in the clockwise direction.
3. The method for monitoring the operating state of a floating offshore wind turbine according to claim 2, characterized in that: the first data acquisition instrument is located at the bottom of the tower barrel, the second data acquisition instrument is located in the engine room, and the third data acquisition instrument is located in the wheel hub.
4. The method for monitoring the operating state of a floating offshore wind turbine according to claim 2, characterized in that: in step S2, the inertial measurement unit in the first attitude monitoring device monitors the floating foundation of the wind turbine generator set in x in real time1、y1And z1Linear acceleration in three axial directions, and floating foundation around x1Axis, y1Axis and z1Processing the angular acceleration data of the shaft to obtain the floating foundation in x1Axis, y1Axis and z1Speed and displacement of shaft, and floating foundation x1Axis, y1Axis and z1Speed and angle of shaft rotation; double-antenna GNSS positioning and orientation receiver in first position and orientation monitoring device for monitoring floating in real timeFormula-based displacement velocity and position data; a gravity acceleration sensor in the first position and posture monitoring device monitors the gravity acceleration change of the floating type base position in real time; the first data acquisition instrument acquires monitoring data of the first attitude monitoring device and transmits the monitoring data to a main control cabinet processor at the bottom of the tower;
inertia measuring device in second attitude monitoring device for monitoring x of cabin in real time2Axis, y2Axis and z2Linear acceleration of the shaft in three directions, and the nacelle's x-axis2Axis, y2Axis and z2Angular acceleration data of the shaft is processed to obtain the x of the engine room2Axis, y2Axis and z2Speed and displacement of the shaft in three directions, and the nacelle's x-axis2Axis, y2Axis and z2Speed and angle of shaft rotation; a double-antenna GNSS positioning and orienting receiver in the second attitude monitoring device monitors the displacement speed and the position data of the engine room in real time; a gravity acceleration sensor in the second attitude monitoring device monitors the gravity acceleration change of the cabin position in real time; the second data acquisition instrument acquires monitoring data of the second attitude monitoring device and transmits the monitoring data to the cabin cabinet processor;
inertia measuring device in third position monitoring device monitors impeller in x in real time3Axis, y3Axis and z3Linear acceleration of the shaft in three directions, and the impeller's rotation about x3Axis, y3Axis and z3Angular acceleration data of the shaft is processed to obtain the x of the impeller3Axis, y3Axis and z3Speed and displacement of the shaft in three directions, and the impeller's rotation about x3Axis, y3Axis and z3Speed and angle of shaft rotation; a double-antenna GNSS positioning and orienting receiver in the third posture monitoring device monitors the displacement speed and the position data of the impeller in real time; a gravity acceleration sensor in the third posture monitoring device monitors the gravity acceleration change of the position of the impeller in real time; and the third data acquisition instrument acquires the monitoring data of the third posture monitoring device and transmits the monitoring data to the impeller cabinet processor.
5. The method for monitoring the operating state of the floating offshore wind turbine according to claim 4, wherein: in step S3, the nacelle cabinet processor and the pitch control cabinet processor store and analyze the collected data, and execute operations according to the following logic:
s3.1, monitoring the floating foundation by sea wave impact: when floating foundation along z1Angle of rotation | phi (z)1) L or along x1Shaft angle | phi (x)1) When the sea wave impact force on the floating foundation reaches a set threshold value, the main control cabinet processor sends early warning information to the cabin cabinet processor, the cabin cabinet processor sends early warning information to the pitch control cabinet processor, the pitch control cabinet processor sends a pitch receiving action signal to a pitch control system after receiving the early warning information, and the pitch control mechanism executes a pitch receiving action and stops the machine;
s3.2, impeller thrust monitoring: the main control cabinet processor processes the data monitored by the first position and posture monitoring device to obtain a floating foundation winding x1Axis, y1Axis and z1The rotation angles of the shafts are respectively denoted as phi (x)1)、φ(y1) And phi (z)1) The nacelle edge y2The shaft angle, i.e. the nacelle yaw angle, is recorded as phi (y)2) Let x1Axis, y1Axis and z1Yaw angle phi (y) of axis along nacelle2) The coordinate axes obtained after deflection are respectively x1' Axis, y1' Axis and z1' Axis, wound around x according to a floating foundation1Axis, y1Axis and z1Angle of rotation phi (x) of the shaft1)、φ(y1) And phi (z)1) Calculating the respective edge x of the floating foundation1' Axis, y1' Axis and z1' rotation angle of shaft phi (x)1’)、φ(y1') and phi (z)1') along z, and nacelle edge z2Angle of rotation | phi (z)2)-φ(z1') when reaching the set threshold, the impeller thrust that the cabin received surpasses the design scope, and the master control cabinet treater sends early warning information to become oar switch board treater this moment, becomes oar switch board treater and sends out the action signal of receiving oar to become oar system after receiving early warning information, becomes oar mechanism and carries out the action of receiving the oar, increases and becomes oar angle, until the cabin along z2The shaft angle is reduced to a reasonable design rangeIn the enclosure, the variable pitch mechanism stops the pitch-retracting action;
s3.3, deviation angle of the engine room, the impeller and the wind direction: by yawing the nacelle by an angle phi (y)2) Comparing and analyzing the data with wind direction sensor data collected by the main control cabinet to obtain deviation angles of the engine room, the impeller and the wind direction, if the deviation angles reach a set threshold value, sending early warning information to a yaw system of the main control cabinet by a processor of the main control cabinet, sending a yaw action signal to a yaw mechanism after the yaw system receives the early warning information, executing a yaw action by the yaw mechanism, reducing the deviation angles of the engine room, the impeller and the wind direction until the deviation angles of the engine room, the impeller and the wind direction are reduced to a reasonable design area, and stopping the yaw action by the yaw mechanism;
s3.4, monitoring the rotation balance of the impeller: the main control cabinet processor processes the data monitored by the first position and posture monitoring device and respectively follows x according to the floating foundation1' Axis, y1' Axis and z1' rotation angle of shaft phi (x)1’)、φ(y1') and phi (z)1'), nacelle edge y2Shaft angle phi (y)2) Nacelle edge z2Angle of rotation phi (z)2) And the impeller edge y3Angle of rotation phi (y) of the shaft3) Along z3Angle of rotation phi (z) of the shaft3) Order:
ψ(y3)=φ(y3)-φ(y2)-φ(y1’),
ψ(z3)=φ(z3)-φ(z2)-φ(z1’),
phi (y)3) Is the impeller edge y3Correction angle of axial rotation, psi (z)3) Is the impeller edge z3Correction angle of axial rotation,. phi (y)3)、ψ(z3) And comparing and analyzing with a set value, and executing the operation according to the following logic:
A. if the impeller is along y3Correction angle psi (y) of axial rotation3) Winding y with right-hand rule indication3The deflection angle of the positive rotation direction of the shaft reaches a set threshold value, which shows that y3The load on the right side of the shaft is larger than the load on the left side of the shaft, at the moment, the processor of the pitch control cabinet sends early warning information to the pitch control system, and the pitch control system controls the pitch angle of the second blade and the third bladeAfter verification, the variable pitch mechanism executes variable pitch operation, and the variable pitch angle of the second blade is increased or the variable pitch angle of the third blade is reduced, or the variable pitch angle of the second blade is increased and the variable pitch angle of the third blade is reduced simultaneously;
B. if the impeller is along y3Correction angle psi (y) of axial rotation3) Winding y with right-hand rule indication3The deflection angle of the negative rotation direction of the shaft reaches a set threshold value, which shows that y3The left side load of the shaft is larger than the right side load, the variable pitch control cabinet processor sends early warning information to the variable pitch system, after the variable pitch system verifies the variable pitch angles of the second blade and the third blade, the variable pitch mechanism executes variable pitch operation, and the variable pitch angle of the second blade is reduced or the variable pitch angle of the third blade is increased, or the variable pitch angle of the second blade is reduced and the variable pitch angle of the third blade is increased at the same time;
C. if the impeller is along z3Correction angle psi (z) of axial rotation3) Wrap z showing right hand rule indication3The deflection angle of the positive rotation direction of the shaft reaches a set threshold value, which indicates z3The load on the right side of the shaft is larger than the load on the left side, at the moment, the variable pitch control cabinet processor sends early warning information to the variable pitch system, after the variable pitch system verifies the variable pitch angles of the first blade, the second blade and the third blade, the variable pitch mechanism executes variable pitch operation, the variable pitch angle of the second blade and the third blade is increased or the variable pitch angle of the first blade is reduced, or the variable pitch angles of the second blade and the third blade are increased and the variable pitch angle of the first blade is reduced at the same time;
D. if the impeller is along z3Correction angle psi (z) of axial rotation3) Wrap z showing right hand rule indication3The deflection angle of the negative rotation direction of the shaft reaches a set threshold value, which shows that z3The left side load of the shaft is larger than the right side load, at the moment, the variable pitch control cabinet processor sends early warning information to the variable pitch system, after the variable pitch system verifies the variable pitch angles of the first blade, the second blade and the third blade, the variable pitch mechanism executes variable pitch operation, the variable pitch angles of the second blade and the third blade are reduced or the variable pitch angle of the first blade is increased, or the variable pitch angles of the second blade and the third blade are reduced and the variable pitch angle of the first blade is increased at the same time;
s3.5, monitoring the rotating speed of the impeller: the variable-pitch control cabinet processor processes the gravity acceleration data monitored by the third attitude monitoring device, and obtains the rotating speed of the impeller according to the gravity acceleration change data; under the condition that the original impeller rotating speed monitoring sensor fails or a slip ring fails and the main control cabinet cannot transmit impeller rotating speed control information to the variable pitch control cabinet, the variable pitch control cabinet processor is used as a reference for controlling variable pitch of the variable pitch control cabinet according to the impeller rotating speed obtained by the data monitored by the second position and posture monitoring device.
6. The method for monitoring the operating state of the floating offshore wind turbine according to claim 5, wherein: in step S3.2, the cabin cabinet processor processes the displacement speed and position data monitored by the second position and posture monitoring device to obtain the x position of the cabin2Axis and z2Axial displacement speed and position data, when the floating foundation is not impacted by sea waves to reach the set threshold value, but the engine room is in x2When the displacement speed or position data of the direction reaches a set threshold value, it is indicated that the thrust of the impeller exceeds the design range, at the moment, the main control cabinet processor sends early warning information to the variable pitch control cabinet processor, the variable pitch control cabinet processor sends a pitch collecting action signal to the variable pitch system after receiving the early warning information, the variable pitch mechanism executes a pitch collecting action, the pitch angle is reduced until the engine room is at x2And the displacement speed and the position data in the direction are reduced to a reasonable design area, and the pitch-variable mechanism stops the pitch-retracting action.
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