CN216866920U - Abnormal data monitoring system for wind generating set and wind power generation system - Google Patents

Abstract

The utility model discloses an abnormal data monitoring system for a wind generating set and a wind generating system, wherein the abnormal data monitoring system comprises: the data acquisition system is used for acquiring and transmitting the operation data of each wind generating set; the field-end controller is connected with the data acquisition system and used for receiving the operation data sent by the data acquisition system and sending an early warning signal when confirming that any wind generating set has abnormal yaw vibration according to the operation data, wherein the early warning signal comprises the set information of the wind generating set with abnormal yaw vibration; and the operation and maintenance terminal is connected with the field end controller and used for feeding back the unit information to the user when the early warning signal is received. Therefore, the problem that abnormal vibration in the yaw process is difficult to find in the prior art is solved.

Description

Abnormal data monitoring system for wind generating set and wind power generation system

Technical Field

The application belongs to the technical field of wind power generation, and particularly relates to an abnormal data monitoring system for a wind generating set and a wind power generation system.

Background

As heavy equipment for long-term operation, wind turbine generators operate in complex environments for a long time. The vibration condition of the wind generating set is an important index reflecting the stability of the wind generating set, the vibration within the allowed range of the wind generating set is normal, but if the vibration is intensified, the part is damaged, and even major accidents occur. At present, in order to prevent abnormal vibration, a protection value is usually set, and when the unit vibration is too large and exceeds the protection value, the protection is started to shut down so as to prevent the unit from being subjected to too large impact.

However, in the yawing process of the unit, due to the arrangement of the sensor control protection algorithm, the vibration is subjected to filtering processing, so that part of vibration impact in the yawing process is filtered, and abnormal vibration in the yawing process is difficult to find.

Disclosure of Invention

The embodiment of the application provides an abnormal data monitoring system for a wind generating set and a wind generating system, and aims to solve the problem that abnormal vibration in the yawing process in the prior art is difficult to find.

In one aspect, an embodiment of the present application provides an abnormal data monitoring system for a wind turbine generator system, where the abnormal data monitoring system includes:

the data acquisition system is used for acquiring and transmitting the operation data of each wind generating set;

the field-end controller is connected with the data acquisition system and used for receiving the operation data sent by the data acquisition system and sending an early warning signal when confirming that any wind generating set has abnormal yaw vibration according to the operation data, wherein the early warning signal comprises the set information of the wind generating set with abnormal yaw vibration;

and the operation and maintenance terminal is connected with the field end controller and used for feeding back the unit information to the user when the early warning signal is received.

Optionally, the data acquisition system comprises:

the data acquisition equipment is arranged on the components of each wind generating set and used for acquiring and transmitting first operating data of each component;

the wind power plant SCADA system is respectively connected with the data acquisition equipment and each wind generating set and is used for receiving first operation data sent by the data acquisition equipment and acquiring second operation data corresponding to each wind generating set; the operational data includes first operational data and second operational data.

Optionally, the data acquisition device comprises:

the acceleration sensor is used for acquiring vibration acceleration data of each wind generating set;

the data acquisition unit is arranged in an engine room of each wind generating set, is connected with the acceleration sensor and is used for acquiring vibration acceleration data, and the first operation data comprise vibration acceleration data.

Optionally, the data acquisition device further comprises a sensor unit connected with the data acquisition unit;

the sensor unit includes at least one of a temperature sensor, a current transformer, a vibration sensor, a strain sensor, a flow sensor, a torque sensor, a cam counter, and a cleanliness sensor.

Optionally, the wind power plant SCADA system is specifically used for being connected with the residual pressure operation devices of the wind generating sets, and is used for acquiring yaw residual pressure data of the wind generating sets in a yaw process; the second operational data includes yaw residual pressure data.

Optionally, the operation and maintenance terminal includes:

a communication unit and a display unit;

the processing unit is connected with the field controller through the communication unit and is also connected with the memory and used for analyzing the early warning signal to obtain unit information when receiving the early warning signal;

the memory is used for storing unit information;

and the processing unit is also used for extracting the unit information from the memory and controlling the display unit to display the unit information.

On the other hand, the embodiment of the present application further provides a wind power generation system including:

each wind generating set;

and the abnormal data monitoring system for the wind generating set in the aspect.

Optionally, each wind turbine generator set comprises:

a tower and a nacelle located on top of the tower, the nacelle including a yaw system;

the impeller is connected with one side of the outer wall of the engine room;

and the fan control system is used for continuously monitoring the angle deviation between the wind direction and the impeller and sending a first driving signal to the yaw system when the angle deviation meets a yaw condition so as to enable the cabin to yaw the wind.

Optionally, the yaw system comprises a yaw brake system and a yaw drive system;

the yaw brake system is connected with the fan control system and used for stopping braking and sending a feedback signal to the fan control system when receiving the first driving signal;

the fan control system is also used for sending a second driving signal to the yaw driving system after receiving the feedback signal;

and the yaw driving system is connected with the fan control system and used for driving the cabin to yaw after receiving the second driving signal until the cabin faces the wind.

Optionally, the yaw brake system comprises:

a yaw brake disc and a yaw brake body,

the yaw brake pad is arranged on the yaw brake body, the yaw brake disc rotates relative to the yaw brake pad, and the yaw brake pad is used for being lifted when receiving a first driving signal;

and the residual pressure operation device is used for applying pressure to the yaw brake disc during the yaw process so as to maintain the yaw residual pressure.

The abnormal data monitoring system for the wind generating set and the wind generating system are provided with the data acquisition system, the field end controller and the operation and maintenance terminal. Wherein, the field controller is respectively connected with the data acquisition system and the operation and maintenance terminal. The field controller receives the operation data of each wind generating set collected by the data collection system, and sends an early warning signal when determining that any set has abnormal yaw vibration according to the operation data, so that a user can timely check the set information with abnormal yaw vibration according to the operation and maintenance terminal, and then can timely overhaul the abnormal set, and the abnormal vibration condition in the yaw process can be timely found, thereby solving the problem that the abnormal vibration in the yaw process in the prior art is difficult to find.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic block diagram of an anomaly data monitoring system for a wind turbine generator system according to an embodiment of the present application;

FIG. 2 is a schematic block diagram of an anomaly data monitoring system for a wind turbine generator system according to another embodiment of the present application;

FIG. 3 is a schematic block diagram of an anomaly data monitoring system for a wind turbine generator system according to another embodiment of the present application;

FIG. 4 is a schematic block diagram of an operation and maintenance terminal in an abnormal data monitoring system for a wind turbine generator system according to an embodiment of the present application;

FIG. 5 is a schematic block diagram of a wind power system according to yet another embodiment of the present application;

FIG. 6 is a schematic view of an alternative configuration of a wind turbine generator set in a wind turbine system according to yet another embodiment of the present application;

FIG. 7 is a schematic view of an alternative configuration of a yaw system in a wind power system according to yet another embodiment of the present application;

fig. 8 is an alternative structural schematic diagram of an yawing brake system in a wind power generation system according to still another embodiment of the application.

In the drawings:

the system comprises a data acquisition system 10, a field-end controller 20, an operation and maintenance terminal 30, a wind power plant SCADA system 11, a data acquisition device 12, an acceleration sensor 121, a data acquisition device 122, a sensor unit 123, a communication unit 31, a processing unit 32, a display unit 33, a memory 34, an abnormal data monitoring system 100 for a wind turbine generator set, a wind turbine generator set 200, a cabin C, a tower T, an impeller W, a hub H, a yaw system 210, a yaw driving system 211, a yaw braking system 212, a yaw brake body 213, a yaw brake disc 214, a residual pressure operation device 215 and a yaw brake disc 216.

Detailed Description

Features and exemplary embodiments of various aspects of the present application will be described in detail below, and in order to make objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are intended to be illustrative only and are not intended to be limiting. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by illustrating examples thereof.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The yaw system of a wind generating set is a system for controlling the rotation of a cabin to face wind according to the measured wind direction, and is generally divided into an active yaw system and a passive yaw system. The arrangement of the yaw system can ensure that the engine room of the wind generating set continuously changes the direction along with the change of the wind direction and is always in the windward state.

The yaw system can be matched with the control system, so that the fan impeller is always in a windward state, and the power generation efficiency is improved; in addition, the yaw system can also provide locking torque, and the safe operation of the wind generating set is guaranteed, so that the yaw system is one of indispensable systems of the wind generating set.

In the field of wind power generation, the vibration condition of a wind generating set is an important index for reflecting the stability of the set. Specifically, during the normal operation of the unit, the generator, the tower and other components in the wind turbine generator set generate vibration, and the vibration within the allowable range is normal. However, if the vibration of the wind turbine generator set is increased, it may cause component damage, and even serious accidents, so in the related art, a corresponding protection value is usually set for the wind turbine generator set, and when the vibration of the wind turbine generator set is too large, that is, the vibration exceeds the protection value, a protection shutdown is started to prevent the wind turbine generator set from being subjected to too large impact.

In the vibration detection process of the wind generating set, a special scene exists, namely abnormal vibration detection is carried out in the yaw process of the wind generating set. In fact, in order to prevent the wind generating set from being shut down due to protection caused by sensor abnormity, a control protection algorithm is further arranged, and the control protection algorithm can filter vibration, so that part of vibration impact in the yawing process can be filtered out and is difficult to find.

Therefore, the detection scheme of the prior art is difficult to find abnormal vibration in the yawing process.

In order to solve the prior art problem, the embodiment of the application provides an abnormal data monitoring system for a wind generating set and a wind power generation system. The abnormal data monitoring system for the wind generating set provided by the embodiment of the application is introduced firstly.

Referring to fig. 1, in an embodiment of the anomaly data monitoring system for a wind turbine generator system of the present application, the anomaly data monitoring system includes:

and the data acquisition system 10 can be used for acquiring and transmitting the operation data of each wind generating set by the data acquisition system 10.

And the field end controller 20 is connected with the data acquisition system 10. The field controller 20 may be configured to receive the operation data sent by the data acquisition system 10, and send an early warning signal when determining that any wind turbine generator set is abnormal in yaw vibration according to the operation data, where the early warning signal includes the unit information of the wind turbine generator set with abnormal yaw vibration.

And the operation and maintenance terminal 30 is connected with the field controller 20, and the operation and maintenance terminal 30 can be used for feeding back the unit information to the user when receiving the early warning signal.

According to the embodiment of the application, the data acquisition system 10, the field controller 20 and the operation and maintenance terminal 30 are arranged, wherein the field controller 20 is respectively connected with the data acquisition system 10 and the operation and maintenance terminal 30. The field controller 20 receives the operation data of each wind generating set acquired by the data acquisition system 10, and when determining that any set has abnormal yaw vibration according to the operation data, sends an early warning signal, so that a user can check the set information of the abnormal yaw vibration in time according to the operation and maintenance terminal 30, and then can overhaul the abnormal set in time, so that the abnormal vibration condition in the yaw process can be found in time, and the problem that the abnormal vibration in the yaw process is difficult to find in the prior art is solved.

The data acquisition system 10 may acquire operation data of the wind turbine generator set in the current time period and the historical time period, where the operation data may include extraction time (or data generation time), a unit number of the wind turbine generator set, an operation status word, a yaw flag, a cable release flag, vibration acceleration data, yaw residual pressure data, and the like.

In some embodiments, please refer to fig. 1 and 2 together, wherein fig. 2 shows a schematic block diagram of the data acquisition system 10. In this embodiment, the data acquisition system 10 may include:

and the data acquisition equipment 12, wherein the data acquisition equipment 12 is installed on the components of each wind generating set. The data acquisition device 12 is capable of acquiring and transmitting first operational data for each component.

The wind power plant SCADA system 11 is respectively connected with the data acquisition device 12 and each wind generating set, and the wind power plant SCADA system 11 can be used for receiving first operation data sent by the data acquisition device 12 and obtaining second operation data corresponding to each wind generating set.

It should be noted that the operation data may include first operation data and second operation data. According to the structure shown in fig. 2, the operation data may be transmitted to the site-side controller 20 after the wind farm SCADA system 11 directly obtains the operation data from the wind turbine generator set, or may be transmitted to the site-side controller 20 after the data acquisition device 12 installed on a component of the wind turbine generator set acquires the operation data and stores the operation data via the wind farm SCADA system 11.

The wind farm scada (supervisory Control And Data acquisition) System, i.e., the Data acquisition And monitoring Control System, is a computer-based DCS (Distributed Control System) And an electric power automatic monitoring System, And can store Data (i.e., first operation Data) recorded by each Data acquisition device 12 arranged on the wind turbine generator System And various operation Data (i.e., second operation Data) of the wind turbine generator System.

For example, the second operational data may include yaw residual pressure data. The wind farm SCADA system 11 can be connected with a residual pressure operation device of each wind generating set. And acquiring yaw residual pressure data of each wind generating set in the process of yawing wind by the wind power plant SCADA system 11. It should be noted that the residual pressure operation device can apply pressure to the yaw brake disc during the yaw process to maintain the yaw residual pressure.

In the scheme, the data acquisition equipment 12 and the wind farm SCADA system 11 are arranged in the data acquisition system 10, so that the operation data required by the yaw vibration abnormity detection of the wind generating set can be acquired in an all-around manner.

In some embodiments, the first operational data may include vibrational acceleration data. Referring to fig. 1-3 together, fig. 3 is a schematic diagram of an alternative module configuration of the data acquisition device 12. When the first operational data includes vibrational acceleration data, the data collection device 12 may include:

and an acceleration sensor 121, wherein the acceleration sensor 121 can be used for acquiring vibration acceleration data of each wind generating set.

And the data acquisition unit 122 is arranged inside the engine room of each wind generating set. The data collector 122 is connected to the acceleration sensor 121, and the data collector 122 can be used for collecting vibration acceleration data.

The above-mentioned scheme explains the structure used when the data acquisition system 10 acquires the vibration acceleration data. Here, the installation position and the number of the acceleration sensors 121 are not limited to these, and may be any position as long as the vibration acceleration data of each wind turbine generator system can be acquired.

For example, the acceleration sensor 121 may be disposed on the stator bracket periphery side of the wind turbine generator system in the horizontal direction, and the condition of the overall vibration acceleration can be effectively reflected by the condition of the stator vibration.

It should be noted that, in a part not shown in fig. 3, the data collector 122 may further include a data collecting interface, a storage module, and a data sending module. The data acquisition interface may be electrically connected to the acceleration sensor 121 for acquiring data, and the storage module may be, for example, a buffer or other memory 34. The data sending module may be an integrated hardware sending module based on a near field communication or a distributed system transmission protocol, and may send the vibration acceleration data stored in the storage module to the wind farm SCADA system 11.

In the above scheme, a connection structure of the acceleration sensor 121 and the data acquisition unit 122 is shown, and a process of acquiring and feeding back the first operation data is provided.

With continued reference to fig. 1-3, in some embodiments, in addition to the acceleration sensor 121, the data acquisition device 12 includes other sensor units 123 connected to the data acquisition device 122. The sensor unit 123 may include at least one of a temperature sensor, a current transformer, a vibration sensor, a strain sensor, a flow sensor, a torque sensor, a cam counter, and a cleanliness sensor.

Through on setting up acceleration sensor 121 and gathering the basis of vibration acceleration, still set up other sensor unit 123, can gather the various first operational data of wind generating set, improved the kind of operational data, provide more abundant detection basis for the unusual vibration of driftage.

With continued reference to fig. 1, the farm end controller 20 is also referred to as a site end controller or a wind farm end controller, and may be disposed at one side of the wind farm or integrated into the control system of the wind turbine. The terminal controller 20 can receive the operation data sent by the wind power plant SCADA system 11 in the data acquisition system 10 at the receiving speed of millisecond level.

It should be noted that, for the wind turbine generator system yaw vibration anomaly detection performed by the field-side controller 20 according to the operation data, the specific software implementation process thereof is not claimed herein. The person skilled in the art may refer to existing big data detection, or an existing yaw anomaly vibration detection strategy. When detecting that any wind generating set has abnormal yaw vibration, the operation and maintenance terminal 30 connected in communication with the field controller 20 can send out an early warning signal, so that the abnormal set information can be fed back to the user according to the early warning signal.

Referring to fig. 1 and 4 together, in some embodiments, the operation and maintenance terminal 30 may include:

a communication unit 31 and a display unit 33.

A processing unit 32, wherein the processing unit 32 is connected to the field controller 20 via the communication unit 31, and the processing unit 32 is further connected to the memory 34. The processing unit 32 may be configured to analyze the warning signal to obtain the unit information when the warning signal is received.

And a memory 34 for storing the unit information.

The processing unit 32 is further configured to extract the unit information from the memory 34, and control the display unit 33 to display the unit information.

It should be noted that the operation and maintenance terminal 30 may be a computer or a mobile terminal device, such as a mobile phone, or may be a monitoring terminal dedicated for operation and maintenance. The communication unit 31 may be a communication chip having the same communication protocol as the field controller 20, and the communication chip may be capable of detecting whether the warning signal sent by the field controller 20 is received based on the communication protocol. The display unit 33 may be a display module of the operation and maintenance terminal 30, for example, a liquid crystal display module, or may be composed of light strings, where each light correspondingly displays the operation condition of one wind turbine generator set, and the normal/abnormal states are distinguished by different colors.

The memory 34 may be, for example, a RAM memory and/or a FLASH memory, and after the processing unit 32 receives the warning signal, the processing unit 32 may store the unit information of the yaw vibration abnormality obtained by analysis by the processing unit 32, and then the processing unit 32 may perform extraction and call.

In order to facilitate the operation and maintenance personnel to timely know whether the yaw vibration abnormity exists, the abnormal unit information can be directly displayed on the display unit 33, so that the visual reminding of the yaw vibration abnormity unit is realized, and the operation and maintenance personnel can timely find the abnormal unit based on the structure and connection relation design of the abnormal data monitoring system, so that the maintenance and detection are convenient.

The anomaly data monitoring system for the wind turbine generator set according to the embodiment of the present application is described in detail above with reference to fig. 1 to 4. On this basis, the embodiment of the present application also protects a wind power generation system, please refer to fig. 5, which includes a wind turbine generator set 200 and the abnormal data monitoring system 100 for the wind turbine generator set provided in the above embodiment, so that the wind power generation system has all the benefits of the abnormal data monitoring system 100 for the wind turbine generator set.

In some embodiments, referring to fig. 5, 6 and 7 together, fig. 6 shows an alternative configuration of the wind park 200, and fig. 7 shows a modular configuration of the yaw system 210. In fig. 6, the wind turbine 200 includes:

a tower T and a nacelle C positioned on top of the tower T, the nacelle C comprising a yaw system 210.

The impeller W is connected with one side of the outer wall of the cabin C; the impeller W also includes a hub H and blades (not shown).

And the fan control system can be used for continuously monitoring the angle deviation of the wind direction and the impeller W and sending a first driving signal to the yaw system 210 when the angle deviation meets a yaw condition so as to enable the cabin C to yaw the wind.

It should be noted that the yaw system 210 can implement automatic yaw control according to the existing yaw logic, and the yaw condition is the starting standard of the automatic yaw logic, and the yaw of the nacelle C can be started only when the angular deviation meets the condition.

It will be appreciated that whether or not wind yaw control is enabled as described above is performed by the fan control system. The fan control system, also known as a fan controller, is capable of obtaining a real-time wind direction from an anemorumbometer and thus obtaining an angular deviation of the wind direction from the impeller W.

The condition that the angular deviation meets the yaw condition is a simple judgment logic of the existing fan control system, and in the embodiment of the application, the condition that the fan control system meets the condition is only limited on the sending opportunity of the driving signal, that is, a hardware structure scheme comprising the fan control system and the yaw system 210 is claimed.

Specifically, the above-described fan control system needs to use the yaw brake system 212 and the yaw drive system 211 in the yaw system 210 when sending the first drive signal to the yaw system 210 to yaw the nacelle C from the wind.

That is, the yaw system 210 may include a yaw brake system 212 and a yaw drive system 211. Wherein the yaw brake system 212 is connected with the fan control system. The yaw brake system 212 may be configured to stop braking and send a feedback signal to the fan control system upon receiving the first drive signal. The fan control system may thus also send a second drive signal to the yaw drive system 211 upon receiving the feedback signal.

And the yaw driving system 211 is also connected with the fan control system, and the yaw driving system 211 can be used for driving the cabin C to yaw after receiving the second driving signal until the cabin C faces the wind.

The yaw driving system 211 may include a yaw motor, a brake, a yaw reducer, and the like, and may function to drive the nacelle C to move towards the wind during yaw.

The yaw brake system 212 is a rotary oscillation system for preventing wear of a yaw transmission gear when aligning the nacelle C with the wind direction, and may include a yaw brake disk 214, a yaw brake block 213, a yaw brake pad 216, an excessive pressure operating device 215, and the like.

Wherein a yaw brake pad 216 is arranged on the yaw brake body 213, the yaw brake disc 214 rotates relative to the yaw brake pad 216, and the yaw brake pad 216 may be lifted upon receiving the first drive signal. And the residual pressure operation device 215 can be used for applying pressure to the yaw brake disc 214 during the yaw process so as to maintain the yaw residual pressure. The residual pressure operation device 215 is used in cooperation with the abnormal data detection system, so that the field-side controller 20 can acquire yaw residual pressure data to assist in detecting yaw vibration abnormality.

In the above scheme, the process of controlling the wind turbine control system to realize wind yaw is provided through the arrangement of each structure in the yaw system 210 in the wind turbine generator system 200.

In addition, the term "and/or" herein is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It should be understood that in the present embodiment, "B corresponding to a" means that B is associated with a, from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may be determined from a and/or other information.

While the utility model has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. An anomaly data monitoring system for a wind turbine generator set, the system comprising:

the data acquisition system is used for acquiring and transmitting the operation data of each wind generating set;

the field end controller is connected with the data acquisition system and used for receiving the operation data sent by the data acquisition system and sending an early warning signal when confirming that any wind generating set has abnormal yaw vibration according to the operation data, wherein the early warning signal comprises the set information of the wind generating set with abnormal yaw vibration;

and the operation and maintenance terminal is connected with the field end controller and used for feeding back the unit information to a user when the early warning signal is received.

2. The system of claim 1, wherein the data acquisition system comprises:

the data acquisition equipment is arranged on the components of each wind generating set and used for acquiring and transmitting first operating data of each component;

the wind power plant SCADA system is respectively connected with the data acquisition equipment and each wind generating set and is used for receiving the first operation data sent by the data acquisition equipment and acquiring second operation data corresponding to each wind generating set; the operational data includes the first operational data and the second operational data.

3. The system of claim 2, wherein the data acquisition device comprises:

the acceleration sensor is used for acquiring vibration acceleration data of each wind generating set;

and the data acquisition unit is arranged in the engine room of each wind generating set, is connected with the acceleration sensor and is used for acquiring the vibration acceleration data, and the first operation data comprises the vibration acceleration data.

4. The system of claim 3, wherein the data acquisition device further comprises a sensor unit connected to the data collector;

the sensor unit includes at least one of a temperature sensor, a current transformer, a vibration sensor, a strain sensor, a flow sensor, a torque sensor, a cam counter, and a cleanliness sensor.

5. The system according to claim 2, wherein the wind farm SCADA system is specifically configured to be connected to a residual pressure operating device of each of the wind turbine generators, and configured to obtain yaw residual pressure data of each of the wind turbine generators during a yaw process; the second operational data includes the yaw residual pressure data.

6. The system according to any one of claims 1 to 5, wherein the operation and maintenance terminal comprises:

a communication unit and a display unit;

the processing unit is connected with the field end controller through the communication unit and is used for analyzing the early warning signal to obtain the unit information when receiving the early warning signal;

the memory is connected with the processing unit and used for storing the unit information;

the processing unit is further configured to extract the unit information from the memory, and control the display unit to display the unit information.

7. A wind power generation system, characterized in that the wind power generation system comprises:

each wind generating set;

and an anomaly data monitoring system for a wind park according to any one of claims 1 to 6.

8. The wind power generation system of claim 7, wherein each of the wind power generation units comprises:

a tower and a nacelle positioned atop the tower, the nacelle including a yaw system;

the impeller is connected with one side of the outer wall of the engine room;

and the fan control system is used for continuously monitoring the angle deviation between the wind direction and the impeller and sending a first driving signal to the yaw system when the angle deviation meets a yaw condition so as to enable the cabin to yaw.

9. The wind-powered electric generation system of claim 8, wherein the yaw system comprises a yaw brake system and a yaw drive system;

the yaw brake system is connected with the fan control system and used for stopping braking and sending a feedback signal to the fan control system when receiving the first driving signal;

the fan control system is further used for sending a second driving signal to the yaw driving system after receiving the feedback signal;

and the yaw driving system is connected with the fan control system and used for driving the cabin to yaw after receiving the second driving signal until the cabin faces the wind.

10. The wind-powered electric generating system of claim 9, wherein the yaw brake system comprises:

a yaw brake disc and a yaw brake body,

a yaw brake pad disposed on the yaw brake body, the yaw brake disc rotating relative to the yaw brake pad, the yaw brake pad configured to lift upon receiving the first drive signal;

and the residual pressure operation device is used for applying pressure to the yaw brake disc during the yaw process so as to maintain the yaw residual pressure.

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