CN-116428125-B - Yaw monitoring system of wind generating set and wind generating set

CN116428125BCN 116428125 BCN116428125 BCN 116428125BCN-116428125-B

Abstract

The invention provides a yaw monitoring system of a wind generating set and the wind generating set, and belongs to the technical field of wind generating set monitoring. The system comprises a sensor group, a data transmission device and a server, wherein the sensor group is arranged on a wind generating set and used for acquiring a lubricating grease temperature value, a caliper vibration value, a tower top stress value and a yaw motor torque value of the wind generating set in a yaw process, the data transmission device is arranged on the wind generating set and is in communication connection with the sensor group so as to realize data transmission, and the server is in communication connection with the data transmission device and used for determining the running state of the wind generating set in the yaw process based on the lubricating grease temperature value, the caliper vibration value, the tower top stress value and the yaw motor torque value of the wind generating set in the yaw process. The invention realizes multi-parameter acquisition, monitors the yaw process of the wind generating set from multiple angles, and ensures the safe and reliable operation of the wind generating set.

Inventors

TANG LIANG
LIU WEICHAO
YUAN MEILIN
DU WEN
WANG SHUAIJIE

Assignees

国电联合动力技术有限公司

Dates

Publication Date: 20260508
Application Date: 20230330

Claims (7)

1. A wind turbine yaw monitoring system, the system comprising: the sensor group (1) is arranged on the wind generating set and is used for acquiring a lubricating grease temperature value, a caliper vibration value, a tower top stress value and a yaw motor torque value of the wind generating set in a yaw process; The data transmission device (2) is arranged on the wind generating set and is in communication connection with the sensor group (1) to realize data transmission; the server (3) is in communication connection with the data transmission device (2) and is used for determining the running state of the wind generating set in the yaw process based on the lubricating grease temperature value, the caliper vibration value, the tower top stress value and the yaw motor torque value of the wind generating set in the yaw process; The system further comprises a damping adjusting device (4) which is arranged on a caliper (51) of the wind generating set and used for adjusting damping moment between the caliper (51) and a gear ring (52) when the vibration value of the caliper exceeds a preset vibration threshold value so as to reduce the vibration value of the caliper below the preset vibration threshold value, a groove (511) is formed in the caliper (51), and the damping adjusting device (4) comprises: A lower sliding pad (41) arranged between the caliper (51) and the gear ring (52), wherein one end part of the lower sliding pad (41) is positioned in the groove (511); The driving rod (42) is rotatably arranged on the caliper (51), one end of the driving rod (42) is positioned in a groove (511) of the caliper (51), the driving rod (42) is in contact with the lower sliding pad (41) through the jacking block (43), and the pressure applied to the lower sliding pad (41) by the jacking block (43) can be adjusted through rotating the driving rod (42), so that the damping moment between the caliper (51) and the gear ring (52) is adjusted; the driving motor is arranged on the caliper (51) and used for providing a rotary driving force for the driving rod (42), the driving motor is in communication connection with the server (3), and the server is further used for generating a motor control instruction based on the caliper vibration value so as to adjust the pressure applied by the driving rod (42) to the lower sliding pad (41), and the driving motor specifically comprises the following components: The server (3) selects a corresponding control quantity of the driving motor based on the caliper vibration value from the preset control curve according to the preset control curve, so as to generate a motor control instruction, wherein the abscissa of the preset control curve is the caliper vibration value, the ordinate is the number of turns of the driving motor, and the preset control curve is determined by fitting according to historical data.
2. Wind park yaw monitoring system according to claim 1, wherein the sensor group (1) comprises: the temperature monitoring device (11) is arranged in a greasing hole of a caliper of the wind generating set and used for acquiring the temperature data of lubricating grease in the greasing hole; The vibration monitoring device (12) is arranged on a caliper of the wind generating set and used for acquiring caliper vibration data of the caliper; the stress monitoring device (13) is arranged on the tower top of the wind generating set and is used for acquiring tower top stress data of the tower top; And the torque monitoring device (14) is arranged on the yaw motor of the wind generating set and is used for acquiring torque data of the yaw motor of the wind generating set.
3. The wind turbine yaw monitoring system of claim 2, wherein the system further comprises: the yaw monitoring control device (15) is connected with a main control system of the wind generating set, and the yaw monitoring control device (15) is used for controlling the temperature monitoring device (11), the vibration monitoring device (12), the stress monitoring device (13), the torque monitoring device (14) and the data transmission device (2) to enter working states when receiving a set yaw starting signal sent by the main control system; and the device is also used for controlling the temperature monitoring device (11), the vibration monitoring device (12), the stress monitoring device (13), the torque monitoring device (14) and the data transmission device (2) to enter a dormant state when receiving a yaw end signal of the unit sent by the main control system.
4. Wind park yaw monitoring system according to claim 2, wherein the temperature monitoring device (11) is a temperature sensor; the vibration monitoring device (12) is a vibration acceleration sensor; the stress monitoring device (13) is a strain gauge; the torque monitoring device (14) is a torque sensor.
5. The wind turbine yaw monitoring system of claim 1, wherein the operational status of the wind turbine includes a normal operational status and an abnormal operational status; If the conditions that the temperature value of the lubricating grease is not lower than a preset temperature threshold value, the vibration value of the caliper is not higher than a preset vibration threshold value, the stress value of the tower top is not higher than a preset stress threshold value and the torque value of the yaw motor is not higher than a preset stress threshold value are met at the same time, the running state of the wind generating set is determined to be a normal running state; otherwise, determining the running state of the wind generating set to be an abnormal running state.
6. The yaw monitoring system of the wind turbine generator system according to claim 1, wherein the server (3) is used for outputting a first alarm command when the temperature value of the lubricating grease is lower than a preset temperature threshold value, outputting a second alarm command when the vibration value of the caliper exceeds the preset vibration threshold value, outputting a third alarm command when the stress value of the tower top exceeds the preset stress threshold value, and outputting a fourth alarm command when the torque value of the yaw motor exceeds the preset stress threshold value.
7. A wind power plant, characterized in that a wind power plant yaw monitoring system according to any one of claims 1-6 is installed.

Description

Yaw monitoring system of wind generating set and wind generating set Technical Field The invention relates to the technical field of wind generating set monitoring, in particular to a yaw monitoring system of a wind generating set and the wind generating set. Background The rapid development of large wind generating sets increases the weight of the nacelle and the load on the tower top, which also requires that the yaw bearing can bear larger loads, and places higher demands on the design and manufacture of the yaw bearing and monitoring during operation. In the prior art, the yaw of the wind generating set is usually realized by adopting the sliding of engineering plastics in a surface contact mode at the joint, the structure is simple, the bearing capacity is high, a hydraulic device and a brake disc are omitted, the cost of the whole wind generating set is reduced, and the risk of hydraulic oil leakage is avoided. However, in the running process of the wind generating set, the multi-sensor information fusion technology is not utilized, the stability of the large megawatt generating set in the actual running process of sliding yaw is comprehensively monitored from different angles, and certain potential safety hazards exist. Disclosure of Invention The invention aims to provide a yaw monitoring system of a wind generating set and the wind generating set, which at least solve the problems that in the running process of the wind generating set, a multi-sensor information fusion technology is not utilized, the stability in the actual running of the sliding yaw of a large megawatt generating set is comprehensively monitored from different angles, and a certain potential safety hazard exists. To achieve the above object, a first aspect of the present invention provides a yaw monitoring system of a wind turbine, the system comprising: the sensor group is arranged on the wind generating set and used for acquiring a lubricating grease temperature value, a caliper vibration value, a tower top stress value and a yaw motor torque value of the wind generating set in a yaw process; The data transmission device is arranged on the wind generating set and is in communication connection with the sensor group so as to realize data transmission; And the server is in communication connection with the data transmission device and is used for determining the running state of the wind generating set in the yaw process based on the lubricating grease temperature value, the caliper vibration value, the tower top stress value and the yaw motor torque value of the wind generating set in the yaw process. Optionally, the sensor group includes: the temperature monitoring device is arranged in a greasing hole of a caliper of the wind generating set and used for acquiring the temperature data of lubricating grease in the greasing hole; the vibration monitoring device is arranged on a caliper of the wind generating set and used for acquiring caliper vibration data of the caliper; the stress monitoring device is arranged on the tower top of the wind generating set and is used for acquiring tower top stress data of the tower top; the torque monitoring device is arranged on a yaw motor of the wind generating set and used for acquiring torque data of the yaw motor of the wind generating set. Optionally, the system further comprises: The yaw monitoring control device is connected with a main control system of the wind generating set and is used for controlling the temperature monitoring device, the vibration monitoring device, the stress monitoring device, the torque monitoring device and the data transmission device to enter a working state when receiving a set yaw starting signal sent by the main control system; And the device is also used for controlling the temperature monitoring device, the vibration monitoring device, the stress monitoring device, the torque monitoring device and the data transmission device to enter a dormant state when receiving a yaw end signal of the unit sent by the main control system. Optionally, the temperature monitoring device is a temperature sensor; the vibration monitoring device is a vibration acceleration sensor; the stress monitoring device is a strain gauge; the torque monitoring device is a torque sensor. Optionally, the running states of the wind generating set comprise a normal running state and an abnormal running state; If the conditions that the temperature value of the lubricating grease is not lower than a preset temperature threshold value, the vibration value of the caliper is not higher than a preset vibration threshold value, the stress value of the tower top is not higher than a preset stress threshold value and the torque value of the yaw motor is not higher than a preset stress threshold value are met at the same time, the running state of the wind generating set is determined to be a normal running state; otherwise, determining the running state of the wind generating set to be an abnorm