Wind generating set and method and device for detecting temperature sensor of wind generating set

Abstract

The invention discloses a wind generating set and a detection method and device for a temperature sensor of the wind generating set, and the method comprises the steps: responding to a detection request of a target temperature sensor of the wind generating set, starting any preset cooler of the wind generating set, and enabling the preset cooler to affect the output result of the target temperature sensor; and in response to an output result of the target temperature sensor indicating that the maximum temperature drop amplitude in the first duration exceeds a first preset value, determining that the target temperature sensor runs abnormally, and configuring the running identifier of the target temperature sensor to indicate that the running is abnormally.

Description

Technical Field

[0001] The present disclosure generally relates to the field of wind power generation technology, and more specifically, to a detection method and device for a wind power generator set and a temperature sensor thereof. Background Art

[0002] While the wind turbine is running stably, the safety of each component of the wind turbine must be ensured. For example, during the operation of the generator, any part and component will generate temperature rise to varying degrees, but the temperature rise varies greatly, and different components have different tolerances to temperature rise. Therefore, it is also very important to inspect the temperature sensor during factory inspection to ensure product quality and is crucial to the reliability of wind turbine operation.

[0003] At present, the inspection of temperature sensors and their signals is generally divided into two parts: one is to check whether the temperature acquisition module is normal, and this part can be tested by removing the wiring of the acquisition module; the other is to check whether the temperature sensor itself is normal. However, since the temperature sensor is installed in the winding coil of the generator and cannot be touched by personnel, the existing inspection process adopts the method of starting the heater on the winding, that is, after heating for a period of time, observe whether the values ​​of the temperature sensors of all windings change to inspect the temperature sensor. However, this process lasts for a long time (about 20 to 30 minutes), which will greatly affect the process test time (all other process tests (such as 100 items) generally take about 15 minutes), affecting the production and testing efficiency of wind turbines, and leading to the extension of test working hours.

[0004] Moreover, in the existing detection process, the generator-related detection items are detected independently of each other. On the one hand, the heater is started first, and the temperature change is used to determine whether the heater is working properly. Then the cooling fan is started for 3 to 5 seconds to observe whether the cooling fan is operating normally. After that, the heater is started for a long time. The unreasonable order of association between the processes will also lead to an extension of the detection time. On the other hand, in the existing detection process, if a manual control is performed in advance, it is still necessary to operate again during the automatic detection process (the conditions for automatic detection are relatively strict), which will further extend the time consumed (40 to 60 minutes). On the other hand, in the existing detection process, the temperature change will not be recorded. Since there are many temperature values ​​of the generator winding, if the data is confused due to negligence, it is necessary to re-test, which will also affect the efficiency of testing and inspection. Summary of the invention

[0005] The embodiments of the present disclosure provide a method and device for detecting a wind turbine generator set and a temperature sensor thereof, which can effectively solve the problems of inaccurate temperature sensor detection, slow temperature rise, and long time consumption in the prior art.

[0006] In a general aspect, a method for detecting a temperature sensor of a wind turbine generator set is provided, comprising: in response to a detection request of a target temperature sensor of the wind turbine generator set, starting any predetermined cooler of the wind turbine generator set, wherein the predetermined cooler affects an output result of the target temperature sensor; in response to the output result of the target temperature sensor indicating that a maximum amplitude of a temperature drop within a first time period exceeds a first preset value, determining that the target temperature sensor is operating normally, and configuring an operation flag of the target temperature sensor to indicate that the operation is normal.

[0007] Optionally, before determining that the target temperature sensor is operating normally, it also includes: in response to the operation duration of any predetermined cooler reaching a first duration or the output result of the target temperature sensor indicating that the temperature has dropped by a second preset value before reaching the first duration, stopping the operation of any predetermined cooler, wherein the second preset value is greater than the first preset value.

[0008] Optionally, before stopping the operation of any predetermined cooler, the method further includes: in response to an output result of the target temperature sensor indicating that the temperature drop rate is less than a third preset value, starting other predetermined coolers of the wind turbine generator set or increasing the cooling capacity of any predetermined cooler.

[0009] Optionally, starting any predetermined cooler of the wind turbine generator set includes: detecting the startup status of all predetermined coolers of the wind turbine generator set; in response to all predetermined coolers not being started, starting any predetermined cooler of the wind turbine generator set; wherein the detection method further includes: in response to any predetermined cooler among all predetermined coolers being started, obtaining the output result of the target temperature sensor after any predetermined cooler is started; in response to the output result of the target temperature sensor indicating that the maximum amplitude of the temperature drop within a first time period exceeds a first preset value, determining that the target temperature sensor is operating normally, and configuring the operation flag of the target temperature sensor to indicate that the operation is normal.

[0010] Optionally, in response to an output result of the target temperature sensor indicating that a maximum temperature drop within a first period of time does not exceed a first preset value, it is determined that the target temperature sensor is operating abnormally, and the operation flag of the target temperature sensor is configured to indicate abnormal operation.

[0011] Optionally, in response to the automatic detection process of the wind turbine generator set being started and running to a predetermined cooler detection sub-process, a target temperature sensor detection sub-process or a heater detection sub-process, an operation identifier of the target temperature sensor is obtained; in response to the operation identifier indicating that there is no abnormality in the operation, the predetermined cooler detection sub-process, the target temperature sensor detection sub-process or the heater detection sub-process is controlled to run normally.

[0012] Optionally, in response to the operation flag indicating abnormal operation or the operation flag not being updated for more than a predetermined period of time, a predetermined cooler detection sub-process, a target temperature sensor detection sub-process or a heater detection sub-process is controlled to detect the target temperature sensor.

[0013] Optionally, the predetermined cooler detection sub-process, the target temperature sensor detection sub-process or the heater detection sub-process is controlled to detect the target temperature sensor, including: controlling the predetermined cooler detection sub-process to detect the target temperature sensor; when the operation mark after the predetermined cooler detection sub-process detects that there is no abnormality in the operation, the target temperature sensor detection sub-process and the heater detection sub-process are controlled to run normally; when the operation mark after the predetermined cooler detection sub-process detects that there is an abnormality in the operation, the target temperature sensor detection sub-process is controlled to detect the target temperature sensor; when the operation mark after the target temperature sensor detection sub-process detects that there is no abnormality in the operation, the heater detection sub-process is controlled to run normally; when the operation mark after the target temperature sensor detection sub-process detects that there is an abnormality in the operation, the heater detection sub-process is controlled to detect the target temperature sensor.

[0014] Optionally, the predetermined cooler detection sub-process is controlled to detect the target temperature sensor, including: starting the predetermined cooler; in response to the output result of the target temperature sensor indicating that the maximum temperature drop within a first time period exceeds a first preset value, determining that the target temperature sensor is operating normally, and configuring the operation flag to indicate that the operation is normal.

[0015] Optionally, the target temperature sensor detection sub-process is controlled to detect the target temperature sensor, including: starting any predetermined cooler of the wind turbine generator set; in response to an output result of the target temperature sensor indicating that the maximum temperature drop within a first time period exceeds a first preset value, determining that the target temperature sensor is operating normally, and configuring the operation flag to indicate that the operation is normal.

[0016] Optionally, the heater detection sub-process is controlled to detect the target temperature sensor, including: starting the heater; in response to the output result of the target temperature sensor indicating that the maximum temperature rise within the second time period exceeds a fourth preset value, determining that the target temperature sensor is operating normally, and configuring the operation flag to indicate that the operation is normal.

[0017] Optionally, controlling the normal operation of the target temperature sensor detection sub-process includes: detecting whether the output result of the target temperature sensor is within a normal range; in response to the output result of the target temperature sensor being within the normal range, not changing the operation flag of the target temperature sensor; in response to the output result of the target temperature sensor not being within the normal range, configuring the operation flag of the target temperature sensor to indicate an operation abnormality.

[0018] In another general aspect, a detection device for a temperature sensor of a wind turbine is provided, comprising: a starting unit, configured to start any predetermined cooler of the wind turbine in response to a detection request of a target temperature sensor of the wind turbine, wherein the predetermined cooler affects an output result of the target temperature sensor; a determination unit, configured to determine that the target temperature sensor is operating normally in response to an output result of the target temperature sensor indicating that a maximum amplitude of a temperature drop within a first time period exceeds a first preset value, and configure an operation flag of the target temperature sensor to indicate that the operation is normal.

[0019] Optionally, the determination unit is further configured to stop operating any predetermined cooler in response to the operating duration of any predetermined cooler reaching a first duration or the output result of the target temperature sensor indicating that the temperature has dropped by a second preset value before reaching the first duration, before determining that the target temperature sensor is operating normally, wherein the second preset value is greater than the first preset value.

[0020] Optionally, the determination unit is further configured to, before stopping the operation of any predetermined cooler, start other predetermined coolers of the wind turbine generator set or increase the cooling capacity of any predetermined cooler in response to the output result of the target temperature sensor indicating that the temperature drop rate is less than a third preset value.

[0021] Optionally, the starting unit is further configured to detect the starting status of all predetermined coolers of the wind turbine generator set; in response to all predetermined coolers not being started, start any predetermined cooler of the wind turbine generator set; wherein the determination unit is further configured to, in response to any predetermined cooler among all predetermined coolers being started, obtain the output result of the target temperature sensor after any predetermined cooler is started; in response to the output result of the target temperature sensor indicating that the maximum amplitude of the temperature drop within a first time period exceeds a first preset value, determine that the target temperature sensor is operating normally, and configure the operation flag of the target temperature sensor to indicate that the operation is normal.

[0022] Optionally, the determination unit is further configured to determine that the target temperature sensor is operating abnormally in response to an output result of the target temperature sensor indicating that the maximum temperature drop within the first time period does not exceed a first preset value, and configure the operation flag of the target temperature sensor to indicate abnormal operation.

[0023] Optionally, the determination unit is also configured to respond to the start of the automatic detection process of the wind turbine generator set, and run to a predetermined cooler detection sub-process, a target temperature sensor detection sub-process or a heater detection sub-process to obtain an operation identifier of the target temperature sensor; in response to the operation identifier indicating that there is no abnormality in the operation, control the predetermined cooler detection sub-process, the target temperature sensor detection sub-process or the heater detection sub-process to run normally.

[0024] Optionally, the determination unit is further configured to control a predetermined cooler detection sub-process, a target temperature sensor detection sub-process or a heater detection sub-process to detect the target temperature sensor in response to an operation identifier indicating an operation abnormality or the operation identifier has not been updated for more than a predetermined period of time.

[0025] Optionally, the determination unit is further configured to control a predetermined cooler detection sub-process to detect the target temperature sensor; when the operation identifier after the predetermined cooler detection sub-process detects the operation normally indicates that the operation is normal, the target temperature sensor detection sub-flow and the heater detection sub-process are controlled to operate normally; when the operation identifier after the predetermined cooler detection sub-process detects the operation abnormally indicates that the operation is abnormal, the target temperature sensor detection sub-process is controlled to detect the target temperature sensor; when the operation identifier after the target temperature sensor detection sub-process detects the operation normal indicates that the heater detection sub-process is controlled to operate normally; when the operation identifier after the target temperature sensor detection sub-process detects the operation abnormally indicates that the operation is abnormal, the heater detection sub-process is controlled to detect the target temperature sensor.

[0026] Optionally, the determination unit is also configured to start a predetermined cooler; in response to an output result of the target temperature sensor indicating that the maximum temperature drop within a first time period exceeds a first preset value, determine that the target temperature sensor is operating normally, and configure the operation identifier to indicate that the operation is normal.

[0027] Optionally, the determination unit is also configured to start any predetermined cooler of the wind turbine generator set; in response to an output result of the target temperature sensor indicating that the maximum temperature drop within a first time period exceeds a first preset value, determine that the target temperature sensor is operating normally, and configure the operation flag to indicate that the operation is normal.

[0028] Optionally, the determination unit is also configured to start the heater; in response to the output result of the target temperature sensor indicating that the maximum temperature rise within the second time period exceeds a fourth preset value, determine that the target temperature sensor is operating normally, and configure the operation identifier to indicate that the operation is normal.

[0029] Optionally, the determination unit is also configured to detect whether the output result of the target temperature sensor is within a normal range; in response to the output result of the target temperature sensor being within the normal range, not changing the operation flag of the target temperature sensor; in response to the output result of the target temperature sensor being not within the normal range, configuring the operation flag of the target temperature sensor to indicate an operation abnormality.

[0030] In another general aspect, a computer-readable storage medium storing instructions is provided, wherein when the instructions are executed by at least one computing device, the at least one computing device is prompted to execute any of the above-mentioned methods for detecting a temperature sensor of a wind turbine generator set.

[0031] In another general aspect, a system is provided that includes at least one computing device and at least one storage device storing instructions, wherein the instructions, when executed by the at least one computing device, cause the at least one computing device to execute a detection method for a temperature sensor of any wind turbine generator set as described above.

[0032] In another general aspect, a wind turbine generator set is provided, comprising a detection device for a temperature sensor of the wind turbine generator set as described above.

[0033] According to the wind turbine generator set and its temperature sensor detection method and device of the embodiment of the present disclosure, when it is necessary to detect the target temperature sensor, the corresponding predetermined cooler is started, and the output result of the target temperature sensor is affected by the predetermined cooler. If the output result indicates that the maximum amplitude of the temperature drop exceeds the first preset value, it can be determined that the target temperature sensor is normal, and the operation mark of the target temperature sensor is configured to indicate that the operation is normal. According to the present disclosure, it is possible to accurately judge whether the temperature sensor is abnormal, and the cooler dissipates heat by energy exchange, and the temperature changes quickly, avoiding the problem of relying on heater heating, slow temperature rise and long time. In addition, the present disclosure does not require manual touch, so it is also applicable to temperature sensors installed inside the wind turbine that cannot be touched or removed by people. Therefore, through the present disclosure, the problems of inaccurate temperature sensor detection and slow temperature rise and long time in the prior art can be effectively solved.

[0034] Additional aspects and / or advantages of the present general inventive concept will be set forth in part in the following description and in part will be apparent from the description or may be learned through practice of the present general inventive concept. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The above and other objects and features of the embodiments of the present disclosure will become more apparent through the following description in conjunction with the accompanying drawings showing the embodiments, in which:

[0036] Figure 1 is a schematic diagram showing the generator-related components of an embodiment of the present disclosure;

[0037] Figure 2 is a flow chart showing a method for detecting a temperature sensor of a wind turbine generator set according to an embodiment of the present disclosure;

[0038] Figure 3 is a schematic diagram showing a detection device involved in an embodiment of the present disclosure;

[0039] Figure 4 is a schematic diagram showing a temperature sensor detection process of an embodiment of the present disclosure;

[0040] Figure 5 1 is a block diagram showing a transmission chain state identification device of a wind turbine generator set according to an embodiment of the present invention. DETAILED DESCRIPTION

[0041] The following specific embodiments are provided to help the reader obtain a comprehensive understanding of the methods, devices and / or systems described herein. However, after understanding the disclosure of the present application, various changes, modifications and equivalents of the methods, devices and / or systems described herein will be clear. For example, the order of operations described herein is only an example and is not limited to those orders set forth herein, but can be changed as will be clear after understanding the disclosure of the present application, except for operations that must occur in a specific order. In addition, for greater clarity and simplicity, the description of features known in the art may be omitted.

[0042] The features described herein can be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided to illustrate only some of the many possible ways to implement the methods, devices, and / or systems described herein, which will be clear after understanding the disclosure of the present application.

[0043] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more.

[0044] Although terms such as "first", "second", and "third" may be used herein to describe various members, components, regions, layers, or portions, these members, components, regions, layers, or portions should not be limited by these terms. Instead, these terms are only used to distinguish one member, component, region, layer, or portion from another member, component, region, layer, or portion. Therefore, without departing from the teachings of the examples described herein, the first member, first component, first region, first layer, or first portion referred to in the examples may also be referred to as the second member, second component, second region, second layer, or second portion.

[0045] In the specification, when an element (such as a layer, a region, or a substrate) is described as being “on”, “connected to”, or “coupled to” another element, the element may be directly “on”, “connected to”, or “coupled to” another element, or one or more other elements may be present therebetween. Conversely, when an element is described as being “directly on”, “directly connected to”, or “directly coupled to” another element, there may be no other elements present therebetween.

[0046] The terms used herein are only used to describe various examples and are not intended to limit the disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms "comprise", "include" and "have" indicate the presence of the described features, quantities, operations, components, elements and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements and / or combinations thereof.

[0047] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as those generally understood by a person of ordinary skill in the art to which the present disclosure belongs after understanding the present disclosure. Unless explicitly defined as such herein, terms (such as those defined in a general dictionary) should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and the present disclosure, and should not be interpreted in an idealized or overly formal manner.

[0048] Furthermore, in the description of examples, when it is considered that a detailed description of a well-known related structure or function would cause vague interpretation of the present disclosure, such a detailed description will be omitted.

[0049] The present disclosure provides a temperature sensor of a wind turbine generator set and a detection method and device thereof, which can solve the above-mentioned problems. The detection method of the temperature sensor of the wind turbine generator set disclosed in the present disclosure can be applied to a server, or to a controller of a single wind turbine generator, or to a master controller of a wind farm, which is not limited in the present disclosure. The server, the controller and the wind turbine generator set can be connected wirelessly or by wire, which is not limited here. The above-mentioned server can be a single server, or a server cluster composed of several servers, or a cloud computing platform or a virtualization center. The following is an explanation using a server as an example.

[0050] The server responds to a detection request of a target temperature sensor of the wind turbine generator set, and starts any predetermined cooler of the wind turbine generator set, wherein the predetermined cooler affects an output result of the target temperature sensor; in response to an output result of the target temperature sensor indicating that a maximum temperature drop within a first time period exceeds a first preset value, it is determined that the target temperature sensor is operating normally, and an operating identifier of the target temperature sensor is configured to indicate that the operation is normal, thereby accurately determining whether the temperature sensor is abnormal, and there is no need to rely on a heater, thus avoiding the problem of slow temperature rise and long time consumption. In addition, the present disclosure does not require manual touch, so it is also applicable to temperature sensors installed inside wind turbines that cannot be touched or removed by humans.

[0051] The present disclosure is described in detail below with reference to the accompanying drawings.

[0052] Let's first briefly introduce the physical principles related to temperature, that is, heat transfer will only occur when there is a temperature difference, that is, temperature difference is a necessary condition for heat transfer. The temperature difference of an object can be divided into arithmetic mean temperature difference and logarithmic mean temperature difference according to the different averaging methods. Within a period of time, the highest temperature and the lowest temperature are the temperature difference within this period of time. When no work is done, energy will migrate from a high-temperature object to a low-temperature object, or from a high-temperature part of an object to a low-temperature part. This phenomenon is called heat transfer. In heat transfer, heat is used to measure the change in the internal energy of an object. Heat transfer has three forms: heat conduction, heat radiation, and heat convection. The heat transfer rates of the three forms are as follows: heat convection > heat conduction > heat radiation.

[0053] The above heat transfer rate refers to the amount of heat passing through the heat transfer surface per unit time, represented by Q, with the unit being W. In the calculation, the heat flux is:

[0054] q=dQ / dS (1)

[0055] Here, S refers to the area of ​​the heat transfer surface.

[0056] The heat transfer rate Q is generally calculated using the following formula:

[0057] Q=ΔT / R' (2)

[0058] Among them, ΔT is the temperature difference between the two objects, and R' is the heat transfer resistance. That is, when the heat transfer resistance remains unchanged, the higher the temperature difference, the faster the heat transfer rate.

[0059] At present, the temperature around the temperature sensor is often increased by starting the generator heater to detect the temperature difference of the temperature sensor output temperature and determine whether the temperature sensor is abnormal. However, due to the heat transfer efficiency, the heating time of the heater is relatively long, generally at least 20 minutes, before the temperature value measured by the temperature sensor changes. If it is to reach the preset change threshold (such as 2°C), it will take longer. For example, taking the winding temperature sensor as an example, if Figure 1As shown, the generator includes a stator 10, a rotor 20, etc. The heater is generally installed on the winding 102 of the stator 10 in the form of a heating belt, and the winding temperature sensor is generally installed in the coil of the winding 102. Therefore, after the heater is heated, it needs to transfer heat to the winding temperature sensor through the winding 102. In the heat transfer process of the winding 102, different materials will inevitably be involved. If it involves metals such as iron or copper, its heat transfer capacity is relatively strong. If it involves insulating materials and air, since the thermal conductivity of insulating materials is much smaller than that of copper and iron, and the thermal conductivity of static air is much smaller than that of insulating materials, its heat transfer capacity is relatively weak. Since the outer layer of the winding 102 coil is an insulating material, its heating conductivity will be relatively small when the air is not flowing. Therefore, when the method of heating by the heater is used for temperature rise detection, it takes a long time for the temperature sensor to detect the temperature change, resulting in low detection efficiency (at least 20 minutes, while the detection of general devices generally only takes 0.5 minutes). Therefore, the working time of the entire test process will be greatly extended.

[0060] The present invention provides a method for detecting a temperature sensor of a wind turbine generator set. Figure 2 1 is a flow chart showing a method for detecting a temperature sensor of a wind turbine generator system according to an embodiment of the present disclosure. Figure 2 The method for detecting the temperature sensor of the wind turbine generator set comprises the following steps:

[0061] In step S201 , in response to a detection request of a target temperature sensor of a wind turbine generator set, any predetermined cooler of the wind turbine generator set is started, wherein the predetermined cooler affects an output result of the target temperature sensor.

[0062] In step S202, in response to the output result of the target temperature sensor indicating that the maximum temperature drop within the first time period exceeds a first preset value, it is determined that the target temperature sensor operates normally, and the operation flag of the target temperature sensor is configured to indicate normal operation.

[0063] The above-mentioned first duration can be set as needed, such as 3 minutes, which is not limited by the present disclosure. The above-mentioned first preset value can be set as needed, such as 0.5 degrees, which is not limited by the present disclosure. The above-mentioned predetermined cooler can be an air cooler or a water cooler, which can be determined according to needs, and the present disclosure does not limit this. Among them, the air cooler can be a cooling fan or other air coolers, which is also not limited by the present disclosure. The heat dissipation method of the air cooler is air flow (thermal convection), so the detection of temperature sensors in multiple positions can also be achieved simultaneously. The above-mentioned target temperature sensor can be a temperature sensor specified by the user to be detected, or it can be a temperature sensor set by the program to be detected, which is not limited by the present disclosure. The maximum amplitude of the above-mentioned temperature drop may be the difference between the output result of the temperature sensor at the beginning of starting the predetermined cooler and the output result of the temperature sensor after the predetermined cooler has been running for the first period of time; it may also be the difference between the output results of the temperature sensor at two time points within the first period of time after the cooler is started, because it is possible that the output result of the temperature sensor at the beginning of starting the predetermined cooler is not the maximum temperature, that is, the output result of the temperature sensor may still be rising after the predetermined cooler is turned on, and the output result of the temperature sensor starts to drop after the predetermined cooler has been running for a period of time. Therefore, the maximum amplitude of the temperature drop may also be the difference between the output results of the temperature sensor at two time points within the first period of time after the cooler is started.

[0064] As an example, when a detection request of the target temperature sensor of the wind turbine generator set is received, that is, when the target temperature sensor needs to be detected, the corresponding predetermined cooler is started, and the output result of the target temperature sensor is affected by the predetermined cooler. If the output result indicates that the maximum amplitude of the temperature drop exceeds the first preset value, it can be determined that there is no abnormality in the target temperature sensor, and the operation identifier of the target temperature sensor is configured to indicate that there is no abnormality in the operation. According to this embodiment, it is possible to accurately judge whether the temperature sensor is abnormal, and the cooler dissipates heat by energy exchange, and the temperature changes quickly, avoiding the problem of relying on heater heating, slow temperature rise and long time. In addition, the present disclosure does not require manual touch, so it is also applicable to temperature sensors installed inside wind turbines that cannot be touched or removed by humans.

[0065] According to an embodiment of the present disclosure, in step S201, starting any predetermined cooler of the wind turbine generator set may include: detecting the startup status of all predetermined coolers of the wind turbine generator set; in response to all predetermined coolers not being started, starting any predetermined cooler of the wind turbine generator set; wherein the detection method further includes: in response to any predetermined cooler among all predetermined coolers being started, obtaining the output result of the target temperature sensor after any predetermined cooler is started; in response to the output result of the target temperature sensor indicating that the maximum amplitude of the temperature drop within the first time period exceeds the first preset value, determining that the target temperature sensor operates normally, and configuring the operation identifier of the target temperature sensor to indicate that the operation is normal. According to this embodiment, when any cooler is started, the output result of the temperature sensor affected by it can be recorded, so that when the temperature sensor needs to be detected, the corresponding output result can be directly obtained to determine whether the corresponding temperature sensor is normal, thereby avoiding the operation of starting the corresponding cooler to start recording the output result of the temperature sensor when the temperature sensor needs to be detected, while facilitating the detection of the temperature sensor, reducing the test time and working hours of the process, and improving the detection efficiency.

[0066] As an example, before receiving the detection request of the target temperature sensor of the wind turbine generator set, some predetermined coolers of the wind turbine generator set have been started. At this time, the output results of the target temperature sensor can be recorded after these predetermined coolers are started, so that when the detection request of the target temperature sensor of the wind turbine generator set is received, the pre-recorded output results of the target temperature sensor can be directly obtained, and the operating status of the target temperature sensor is determined according to these pre-recorded output results. That is, when the output result of the target temperature sensor indicates that the maximum temperature drop within a first time period exceeds a first preset value, it is determined that the target temperature sensor is operating normally, and the operating flag of the target temperature sensor is configured to indicate that there is no abnormality in the operation.

[0067] As an example, when a detection request from a target temperature sensor of a wind turbine is received, before starting the predetermined cooler, the startup status of all predetermined coolers of the wind turbine can be detected. If all predetermined coolers are not started, any predetermined cooler of the wind turbine is started, and the output result of the target temperature sensor is recorded. If any predetermined cooler of all predetermined coolers has been started, the pre-recorded output result of the target temperature sensor after the start of any predetermined cooler can be directly obtained without starting the corresponding predetermined cooler again. The output result can be obtained in the fastest way to detect the operation status of the target temperature sensor.

[0068] The above embodiment adopts a method of pre-recording the output result of the target temperature sensor, that is, during the start-up and operation of the cooler, the corresponding output result (such as temperature value) is automatically counted and recorded. When it is necessary to detect the target temperature sensor, the temperature difference between the maximum temperature and the minimum temperature recorded can be directly detected to determine whether the output temperature of the target temperature sensor has changed, so as to determine the operation of the target temperature sensor, thereby reducing the total test time and working hours and improving the detection efficiency.

[0069] According to an embodiment of the present disclosure, corresponding to step S202, the detection method of the present disclosure may further include: in response to the output result of the target temperature sensor indicating that the maximum temperature drop within the first time period does not exceed the first preset value, determining that the target temperature sensor is operating abnormally, and configuring the operating flag of the target temperature sensor to indicate an operating abnormality. According to this embodiment, it is possible to quickly determine that the target temperature sensor is operating abnormally, so that the temperature of the target temperature sensor can be analyzed as early as possible to avoid the impact caused by the abnormality of the target temperature sensor.

[0070] According to an embodiment of the present disclosure, before determining in step S202 that the target temperature sensor operates normally, in response to the operation duration of any predetermined cooler reaching a first duration or the output result of the target temperature sensor indicating that the temperature drops by a second preset value before the first duration is reached, any predetermined cooler is stopped, wherein the second preset value is greater than the first preset value. According to this embodiment, the output result of the target temperature sensor can be detected in real time, and once the target temperature sensor drops by the second preset value, the cooler can be stopped, that is, the cooler does not need to continue to operate, reducing resource consumption; and even if the target temperature sensor does not drop by the second preset value, the cooler can be stopped when the duration of the cooler reaches a certain duration, avoiding resource consumption caused by the long-term operation of the cooler, because within a certain period of time, if the temperature sensor has not dropped or changed, it indicates that there is a problem with the temperature sensor, and there is no need to run the cooler to continue monitoring.

[0071] The second preset value can be set as needed, such as 2 degrees, and the present disclosure does not limit it. The output result of the target temperature sensor indicates that the temperature drops by the second preset value before the first time period is reached, or the output result of the target temperature sensor indicates that the maximum amplitude of the temperature drop exceeds the second preset value before the first time period is reached, and the present disclosure does not limit it.

[0072] As an example, after any predetermined cooler is started, the output result of the target temperature sensor can be recorded in real time. When the output result of the target temperature sensor indicates that the temperature has dropped by 2 degrees before the first duration is reached, it means that the target temperature sensor is very sensitive and operates normally. At this time, any predetermined cooler can be stopped. In addition, after the operation duration of any predetermined cooler reaches the first duration, any predetermined cooler can also be stopped. This is because if the temperature sensor has not dropped or changed within a certain period of time, it indicates that there is a problem with the temperature sensor and there is no need to run the cooler to continue monitoring. In this embodiment, by setting the first duration and the second preset value to stop any predetermined cooler that is started, resource consumption caused by the long-term operation of the cooler can be avoided.

[0073] According to an embodiment of the present disclosure, before stopping the operation of any predetermined cooler, in response to the output result of the target temperature sensor indicating that the temperature drop rate is less than the third preset value, other predetermined coolers of the wind turbine generator set are started or the cooling capacity of any predetermined cooler is increased. According to this embodiment, if a predetermined cooler is started and the drop rate of the target temperature sensor is too slow, multiple predetermined coolers can be started or the cooling capacity of the cooler can be increased, so that the output result of the target temperature sensor can drop quickly, further improving the detection efficiency.

[0074] As an example, the second preset value can be set as needed, such as 0.1°C / 0.5 minutes, which is not limited in the present disclosure. The above-mentioned starting of other predetermined coolers of the wind turbine generator set can be starting all other predetermined coolers, or starting some other predetermined coolers, which is not limited in the present disclosure. This embodiment utilizes that there are multiple coolers of the wind turbine generator set, and the coolers have high-speed operation, low-speed operation and other configurations, which can better realize the detection of the temperature sensor.

[0075] As an example, when the predetermined cooler to be started is an air cooler (such as a cooling fan), the above-mentioned increase in the cooling capacity of any predetermined cooler may be to increase the rotation speed of the air cooler. When the predetermined cooler to be started is a water cooler, the above-mentioned increase in the cooling capacity of any predetermined cooler may be to increase the flow rate of the water cooler. The present disclosure does not limit this.

[0076] As an example, taking the case where the predetermined cooler to be started is an air cooler, after starting the corresponding air cooler, it is found that the output result of the target temperature sensor indicates that the temperature drop rate is less than 0.1°C / 0.5 minutes. At this time, other predetermined coolers can be started or the speed of the air cooler can be increased so that the output result of the target temperature sensor can drop quickly, further improving the detection efficiency.

[0077] According to an embodiment of the present disclosure, Figure 2After the detection method shown, the automatic detection process of the wind turbine generator set can also be started in response to the start, and the predetermined cooler detection sub-process, target temperature sensor detection sub-process or heater detection sub-process is run to obtain the operation identification of the target temperature sensor; in response to the operation identification indicating that there is no abnormality in the operation, the predetermined cooler detection sub-process, target temperature sensor detection sub-process or heater detection sub-process is controlled to run normally. According to this embodiment, the separate detection of the above-mentioned target temperature sensor can be performed before the automatic detection process. If the separate detection result shows that the target temperature sensor has no abnormality, the automatic detection process can run normally and skip the detection of the target temperature sensor, that is, there is no need to detect the target temperature sensor, so that the present disclosure only needs to detect the target temperature sensor once, which reduces the detection time.

[0078] According to an embodiment of the present disclosure, in response to the operation flag indicating abnormal operation or the operation flag not being updated for more than a predetermined time, the predetermined cooler detection sub-process, the target temperature sensor detection sub-process or the heater detection sub-process is controlled to detect the target temperature sensor. According to this embodiment, only when the target temperature sensor is abnormal or has not been detected for a long time, the predetermined cooler detection sub-process, the target temperature sensor detection sub-process or the heater detection sub-process will be used for detection, which also ensures that the target temperature sensor is only detected once, reducing the detection time, while ensuring that the target temperature sensor is detected.

[0079] As an example, assuming that the automatic detection process of the wind turbine generator set includes a predetermined cooler detection sub-process, a target temperature sensor detection sub-process and a heater detection sub-process, the detection sequence of the target temperature sensor in the present disclosure can be: manual test (as described above) Figure 2The following is a separate test as shown in the figure)->predetermined cooler test sub-process->target temperature sensor test sub-process->heater test sub-process. Specifically, if the target temperature sensor has been tested during manual testing and the test result shows that the target temperature sensor is operating normally, then when running to the predetermined cooler test sub-process, it can be directly passed or only the cooler operation feedback signal can be detected; similarly, when running to the target temperature sensor test sub-process, it can also be directly passed or only the temperature value of the target temperature sensor can be detected to be normal. The normal value means that the temperature signal data is not equal to -850 and 850; and if the temperature value has dropped before, then when running to the heater test sub-process, after the heater is started, the temperature rise is relatively fast under the combined effect of the ambient temperature and the heater. Of course, in this process, only the feedback signal and loop current of the heater can be detected. If the target temperature sensor has been tested for temperature change during manual testing and the test result shows that the target temperature sensor is operating abnormally, it is necessary to test the target temperature sensor through the predetermined cooler test sub-process, the target temperature sensor test sub-process or the heater test sub-process to ensure the normal operation of the target temperature sensor.

[0080] As an example, the above-mentioned single detection of the target temperature sensor (such as Figure 2 The detection method shown, hereinafter also referred to as manual detection) may also be performed after the automatic detection process of the wind turbine generator set. For example, the detection order of the target temperature sensor in the present disclosure may also be: predetermined cooler detection sub-process -> manual test (i.e., the above-mentioned separate detection) -> target temperature sensor detection sub-process -> heater detection sub-process, or it may be predetermined cooler detection sub-process -> heater detection sub-process -> target temperature sensor detection sub-process -> manual test (i.e., the above-mentioned separate detection), and the present disclosure is not limited to this.

[0081] The above automatic test process refers to automatically testing various components of the wind turbine generator set according to a preset logic and sequence. For example, after testing the voltage signal, it automatically enters the power supply feedback signal detection, and then automatically enters the temperature detection, etc.

[0082] It should be noted that the following sequence of detecting the target temperature sensor can better shorten the test time of the wind turbine generator set and improve the inspection efficiency: Manual test (as mentioned above) Figure 2 The detection sequence is described below through an embodiment:

[0083] According to an embodiment of the present disclosure, controlling the predetermined cooler detection sub-process, the target temperature sensor detection sub-process or the heater detection sub-process to detect the target temperature sensor may include: controlling the predetermined cooler detection sub-process to detect the target temperature sensor; when the operation identifier after the predetermined cooler detection sub-process detects that there is no abnormality in the operation, controlling the target temperature sensor detection sub-process and the heater detection sub-process to run normally; when the operation identifier after the predetermined cooler detection sub-process detects that there is an abnormality in the operation, controlling the target temperature sensor detection sub-process to detect the target temperature sensor; when the operation identifier after the target temperature sensor detection sub-process detects that there is no abnormality in the operation, controlling the heater detection sub-process to run normally; when the operation identifier after the target temperature sensor detection sub-process detects that there is an abnormality in the operation, controlling the heater detection sub-process to detect the target temperature sensor.

[0084] Through the test sequence of this embodiment, the target temperature sensor only needs to be tested once, and when the target temperature sensor operates normally, when the heater itself is tested, since the cooler has been turned on before the heater detection sub-process is run, the temperature around the temperature sensor is already very low. Therefore, after starting the heater, the temperature around the temperature sensor also rises quickly, so that the temperature rise can be detected quickly, shortening the detection time of the heater, further shortening the test time of the wind turbine generator set, and improving the inspection efficiency.

[0085] As an example, the detection sequence of the target temperature sensor in this embodiment is: manual test (as mentioned above) Figure 2 Separate detection as shown) -> predetermined cooler detection sub-process -> target temperature sensor detection sub-process -> heater detection sub-process. Specifically, if during manual testing, the target temperature sensor has been detected and the detection result is that the target temperature sensor is operating abnormally, first control the predetermined cooler detection sub-process to detect the target temperature sensor; if the operation mark after the detection of the predetermined cooler detection sub-process indicates that there is no abnormality in the operation, the target temperature sensor detection sub-process and the heater detection sub-process can operate normally; if the operation mark after the detection of the predetermined cooler detection sub-process indicates that there is no abnormality in the operation, the target temperature sensor detection sub-process and the heater detection sub-process can operate normally; if the operation mark after the detection of the predetermined cooler detection sub-process indicates that there is no abnormality in the operation, the heater detection sub-process can operate normally; if the operation mark after the detection of the target temperature sensor detection sub-process indicates that there is no abnormality in the operation, the heater detection sub-process can operate normally; if the operation mark after the detection of the target temperature sensor detection sub-process indicates that there is an abnormality in the operation, the heater detection sub-process is controlled to detect the target temperature sensor. In this way, the advantage of adopting this detection sequence is that the target temperature sensor only needs to be detected once.

[0086] As an example, since the personnel cannot see or touch the heater, it takes a long time to detect whether the heater is working properly by starting the heater to detect the temperature rise. According to the detection sequence of this embodiment, the heater detection sub-process is run later, that is, before the heater detection sub-process, the cooler has been turned on, and the cooler will cool down the vicinity of the generator, so that the temperature near the generator is low enough. When the heater detection sub-process is run, after the heater is started, according to the above formula (2), the temperature rise felt by the winding temperature sensor will also be faster, so the detection time of the heater can be shortened, thereby shortening the test time of the wind turbine generator set and improving the inspection efficiency.

[0087] According to an embodiment of the present disclosure, controlling a predetermined cooler detection sub-process and detecting a target temperature sensor may include: starting a predetermined cooler; in response to an output result of the target temperature sensor indicating that the maximum temperature drop within a first time period exceeds a first preset value, determining that the target temperature sensor is operating normally, and configuring the operation flag to indicate that the operation is operating normally. According to this embodiment, a separate detection of the target temperature sensor may be performed before the automatic detection process. If the separate detection result at this time shows that the target temperature sensor is abnormal or not detected, the cooler detection sub-process in the automatic detection process may detect the target temperature sensor to ensure that the target temperature sensor is operating normally.

[0088] As an example, assume that the target temperature sensor has been individually detected in advance (e.g., by Figure 2 If the detection result shows that the target temperature sensor is operating abnormally, then when the automatic detection process is started and runs to the predetermined cooler detection sub-process, the operation identifier of the target temperature sensor can be obtained. When the operation identifier indicates an operation abnormality or the operation identifier has not been updated for more than a predetermined period of time, the predetermined cooler can be started and the output result of the target temperature sensor can be recorded. When the output result of the target temperature sensor indicates that the maximum temperature drop within a first period of time exceeds a first preset value, it is determined that the target temperature sensor is operating normally, and the operation identifier is configured to indicate that the operation is normal.

[0089] It should be noted that, assuming that the target temperature sensor is not pre-detected before running to the predetermined cooler detection sub-process, it can also be classified as the operation identification not being updated for more than a predetermined time. At this time, the predetermined cooler can also be started to detect the target temperature sensor.

[0090] According to an embodiment of the present disclosure, controlling the target temperature sensor detection sub-process to detect the target temperature sensor may include: starting any predetermined cooler of the wind turbine generator set; in response to the output result of the target temperature sensor indicating that the maximum temperature drop within the first time period exceeds the first preset value, determining that the target temperature sensor is operating normally, and configuring the operation flag to indicate that the operation is normal. According to this embodiment, a separate detection of the target temperature sensor can be performed before the automatic detection process. If the separate detection result at this time shows that the target temperature sensor is abnormal or not detected, the target temperature sensor detection sub-process in the automatic detection process can also realize the detection of the target temperature sensor.

[0091] As an example, assume that the target temperature sensor has been individually detected in advance (e.g., by Figure 2 If the detection result shows that the target temperature sensor is operating abnormally, then when the automatic detection process is started and runs to the target temperature sensor detection sub-process, the operation identification of the target temperature sensor can be obtained. When the operation identification indicates an operation abnormality or the operation identification has not been updated for more than a predetermined period of time, any predetermined cooler of the wind turbine generator set can be started, and the output result of the target temperature sensor can be recorded. When the output result of the target temperature sensor indicates that the maximum temperature drop within a first period of time exceeds a first preset value, it is determined that the target temperature sensor is operating normally, and the operation identification is configured to indicate that the operation is normal.

[0092] It should be noted that, assuming that the target temperature sensor is not detected in advance before running to the target temperature sensor detection sub-process, it can also be classified as the operation identification not being updated for more than a predetermined time. At this time, the predetermined cooler can also be started to detect the target temperature sensor.

[0093] According to an embodiment of the present disclosure, controlling the heater detection sub-process to detect the target temperature sensor may include: starting the heater; in response to the output result of the target temperature sensor indicating that the maximum temperature rise within the second time period exceeds the fourth preset value, determining that the target temperature sensor is operating normally, and configuring the operation flag to indicate that the operation is normal. According to this embodiment, a separate detection of the target temperature sensor may be performed before the automatic detection process. If the separate detection result at this time shows that the target temperature sensor is abnormal or not detected, the heater detection sub-process in the automatic detection process may also detect the target temperature sensor.

[0094] As an example, assume that the target temperature sensor has been individually detected in advance (e.g., by Figure 2If the detection result shows that the target temperature sensor is operating abnormally, then when the automatic detection process is started and runs to the heater detection sub-process, the operation identifier of the target temperature sensor can be obtained. When the operation identifier indicates an operation abnormality or the operation identifier has not been updated for more than a predetermined period of time, the heater can be started and the output result of the target temperature sensor can be recorded. When the output result of the target temperature sensor indicates that the maximum amplitude of the temperature rise within the second period of time exceeds the fourth preset value, it is determined that there is no abnormality in the operation of the target temperature sensor, and the operation identifier is configured to indicate that there is no abnormality in the operation.

[0095] It should be noted that, assuming that the target temperature sensor is not detected in advance before running to the heater detection sub-process, it can also be classified as the operation flag not being updated for more than a predetermined time. At this time, the heater can also detect the target temperature sensor.

[0096] As an example, assume that the target temperature sensor has been individually detected in advance (e.g., by Figure 2 If the detection method shown in the figure is used for detection) and the detection result shows that the target temperature sensor operates normally, then when the automatic detection process is started and runs to the heater detection sub-process, the line current of the heater can be detected to determine whether the heater itself is working normally.

[0097] According to an embodiment of the present disclosure, controlling the normal operation of the target temperature sensor detection sub-process may include: detecting whether the output result of the target temperature sensor is within a normal range; in response to the output result of the target temperature sensor being within the normal range, not changing the operation identification of the target temperature sensor; in response to the output result of the target temperature sensor being not within the normal range, configuring the operation identification of the target temperature sensor to indicate an abnormal operation. According to this embodiment, even if it has been determined that the target temperature sensor is normal, the target temperature sensor detection sub-process may further determine whether the output result of the target temperature sensor is within a normal range. If it is not within the normal range, the target temperature sensor may still be determined to be abnormal, thereby further improving the detection accuracy.

[0098] As an example, assume that the target temperature sensor has been individually detected in advance (e.g., by Figure 2If the target temperature sensor is operated normally and the detection result shows that the target temperature sensor is operating normally, the operation flag of the target temperature sensor can be obtained when the automatic detection process is started and runs to the target temperature sensor detection sub-process. When the operation flag indicates that the operation is normal, it can be detected whether the output result of the target temperature sensor is within the normal range. For example, the normal value means that the data of the temperature signal is not equal to -850 and 850. If the output result of the target temperature sensor is within the normal range, the operation flag of the target temperature sensor is not changed. If the output result of the target temperature sensor is not within the normal range, the operation flag of the target temperature sensor is configured to indicate abnormal operation.

[0099] Combine the following Figure 3 and Figure 4 The present disclosure is systematically described.

[0100] Figure 3 is a schematic diagram showing a detection device involved in an embodiment of the present disclosure, such as Figure 3 As shown, the detection device includes a central processing unit (CPU), a DO1 module, a DO2 module, a DO3 module, a DO4 module, a DO5 module, an AI module, a cooler 1 (M1), a cooler 2 (M3), a heater, a contactor, and a temperature sensor. Among them, the DO1 module, the DO2 module, the DO3 module, the DO4 module, and the DO5 module represent digital output modules, the DO1 module and the DO2 module respectively control the low-speed operation and high-speed operation of the cooler 1 through the contactor, the DO3 module and the DO4 module respectively control the low-speed operation and high-speed operation of the cooler 2 through the contactor, the DO5 module controls the operation of the heater through the contactor, and the AI ​​module represents an analog input module, and the AI ​​module is used to collect the signal of the temperature sensor.

[0101] In the general configuration of a wind turbine, there is only one heater, so it takes a long time to perform temperature rise detection through the heater, especially when it needs to be performed multiple times, the time consumption will increase significantly; and in order to meet the heat dissipation function of the wind turbine for a long time when connected to the grid, especially after reaching the rated power, the power and speed of the cooler are generally large, and there are generally multiple coolers.

[0102] The present disclosure utilizes the above characteristics of the wind turbine generator set and the heat transfer mode of thermal convection to realize the detection of the temperature sensor and its circuit. Specifically, taking the winding temperature sensor as an example, when the winding temperature sensor needs to be detected, the cooler is first started. Under the effect of the heat dissipation of the cooler, the temperature of the generator coil is reduced. In this process, the rate of change of the temperature output by the winding temperature sensor is detected. If the rate of change of the temperature is low, the cooler is automatically controlled from the low-speed operation state to the high-speed operation state. Multiple coolers can also be started at the same time; when the temperature difference of the temperature output by the winding temperature sensor exceeds the above first preset value, it is considered that the winding temperature sensor and its circuit are working normally and the detection is passed. If the temperature output by the winding temperature sensor does not change within the set threshold time (such as the temperature difference does not exceed the above first preset value), it is considered that the winding temperature sensor and its circuit are working abnormally, and the detection fails. At this time, it is necessary to further find the cause of the abnormality. The present disclosure accelerates the change of the temperature around the temperature sensor by utilizing the above characteristics of the wind turbine generator set and the heat transfer mode of thermal convection, reduces the test time, speeds up the test process, and reduces personnel operation and intervention.

[0103] Figure 4 is a schematic diagram showing a temperature sensor detection process of an embodiment of the present disclosure, such as Figure 4 As shown, the detection sequence of the temperature sensor in this embodiment is manual test (i.e., the above-mentioned separate detection) -> predetermined cooler detection sub-process -> target temperature sensor detection sub-process -> heater detection sub-process, and the cooler adopts a cooling fan, and the temperature sensor can be a winding temperature sensor, which specifically includes the following steps:

[0104] Step S401, detect whether to enter the manual detection mode; if entering the manual detection mode, go to step S402, otherwise jump to step S407.

[0105] In this step, entering the manual testing process means that before or before entering the automatic testing process, the technician can manually control the interface button to start the cooler to test the temperature sensor to be tested.

[0106] Step S402, start the cooling fan and record the temperature value of the temperature sensor to be detected;

[0107] In this step, in the process of starting the cooling fan, the controller collects and records the temperature value of the temperature sensor to be detected, and records the minimum value and the maximum value. The above collection cycle can be collected in real time, or it can be collected once in a scanning cycle of the PLC. It should be noted that in the process of starting the cooling fan, the controller can collect and record the temperature of multiple temperature sensors, and can count the maximum value and minimum value of each temperature sensor.

[0108] This step eliminates the need to restart the fan when temperature detection is required, and directly obtains the pre-recorded temperature value to detect the temperature change of the temperature sensor, thereby reducing the total test time.

[0109] Step S403, check whether the temperature drop rate is low; for example, the temperature drop rate threshold can be set to 0.1°C / 0.5 minute temperature with a change interval of 0.1°C. If the temperature drop rate is too low, proceed to step S404, otherwise jump to step S405.

[0110] Step S404, automatically controlling the cooling fan to run at high speed or starting multiple cooling fans;

[0111] This step is to automatically control the cooling fan to switch from low-speed operation to high-speed operation if the temperature drop rate is too low, such as the drop rate is lower than 0.1℃ / 0.5min, or start other cooling fans at the same time, so as to speed up air convection and make the temperature around the temperature sensor change quickly.

[0112] Step S405, determine whether the maximum amplitude of the temperature drop is >2°C or whether the cooling fan startup time reaches the first time length; if the maximum amplitude of the temperature drop is >2°C or the cooling fan startup time reaches the first time length (such as 3 minutes), proceed to step S406, otherwise jump to step S402 and continue to record the temperature value of the temperature sensor to be detected.

[0113] Step S406, automatically stop the cooling fan and record the temperature change;

[0114] In this step, if the temperature value output by the temperature sensor to be detected does not change, or the change in temperature value after the cooling fan starts for the first time is less than 0.5°C, it is determined that the temperature sensor is operating abnormally. At this time, it is necessary to detect the cause of the abnormality, which may be a line abnormality or an abnormality in a certain module. If the temperature value change is greater than 0.5°C, the operating flag of the temperature sensor is set to indicate that there is no abnormality in the operation. In fact, as long as the temperature value changes, it can be determined that the temperature sensor is operating normally, but a threshold needs to be set during detection to facilitate the detection system to judge that if the cooling fan is turned on for a long time, a temperature drop of 5 degrees is also normal.

[0115] Step S407, detecting whether to enter the automatic detection process;

[0116] In this step, if the automatic detection process of the wind turbine generator set is started and entered, then continue to step S408, otherwise jump to the end;

[0117] Step S408, executing the automatic detection process;

[0118] Step S409, whether the predetermined cooler detection sub-process or the target temperature sensor detection sub-process has been reached; if according to the preset logic and sequence, the predetermined cooler detection sub-process or the target temperature sensor detection sub-process has been reached (such as the flow program number is 100), continue to step S410, otherwise continue the automatic detection process and go to step S408.

[0119] Among them, the predetermined cooler detection sub-process or the target temperature sensor detection sub-process is set to two categories: one is that the manual detection has been completed and passed, and the other is that the manual detection has not been performed, the manual detection has not passed, or the cooling fan has run for too short a time (such as causing the temperature change to be less than 0.5°C);

[0120] Step S410, determining whether the temperature detection has been completed;

[0121] In this step, if the temperature detection has been completed and passed before, the operation flag of the temperature sensor is obtained, and the detection condition is subsequently switched according to the operation flag, that is, continuing to step S411, otherwise go to step S412.

[0122] Step S411, setting process detection conditions;

[0123] In this step, if the temperature detection has been completed and passed before, the process detection conditions are set, such as the target temperature sensor detection sub-process, in which only the temperature value of the temperature sensor is detected to be within the normal range. If it is within the normal range, the operation flag of the temperature sensor is not changed, otherwise the cooling fan needs to be restarted to detect the temperature change, that is, step S412 is executed (this part is not shown in the figure), and another example is the predetermined cooler detection sub-process, in which only the feedback contact of the corresponding cooling fan operation is detected, and step S414 is continued;

[0124] Step S412, starting the cooling fans and automatically controlling the number of the started cooling fans, and recording the temperature value of the temperature sensor;

[0125] The control logic of this step is the same as that of step S402, step S403, step S404, step S405, and step S406, and will not be repeated here;

[0126] Step S413, determine whether the maximum amplitude of the temperature drop is >0.5°C; if it is greater than 0.5°C, set the operation flag of the temperature sensor to indicate that there is no abnormality in the operation, and continue to step S414, otherwise go to step S415.

[0127] It should be noted that if the predetermined cooler detection sub-process is earlier than the target temperature sensor detection sub-process, and no manual detection is performed before the sub-process, the manual detection fails, or the cooling fan operation time is too short (such as causing the temperature change to be less than 0.5°C), and when the temperature change is detected to be greater than 0.5°C, the operation flag of the temperature sensor is also set to indicate that there is no abnormality in the operation. If the target temperature sensor detection sub-process is earlier than the predetermined cooler detection sub-process, the corresponding cooling fan can be started during the target temperature sensor detection sub-process. If the final detection passes, the subsequent predetermined cooler detection sub-process only needs to detect the feedback contacts of the corresponding cooling fan operation.

[0128] Step S414: the temperature sensor passes the test, i.e., the operation flag of the temperature sensor is set to indicate that the operation is normal;

[0129] Step S415: the temperature sensor fails the test, i.e., the operation flag of the temperature sensor is set to indicate abnormal operation;

[0130] Step S416, whether the heater detection sub-process has been reached; if the heater detection sub-process has been reached according to the preset logic and sequence, continue to step S417, otherwise continue to run the automatic detection process and jump to step S421;

[0131] Step S417, starting the heater;

[0132] Step S418, determine whether the temperature output by the temperature sensor increases. If increased, proceed to step S419, otherwise jump to step S420.

[0133] If the temperature drops in the above process, the temperature around the temperature sensor can be more easily increased by utilizing the dual effects of the heater and the ambient temperature; the temperature increase in this step can change a certain threshold within a certain period of time, such as increasing by 2 degrees in 1 minute or 2 degrees in 3 minutes.

[0134] Step S419: The heater is tested and passed, i.e. the operating indicator of the set temperature sensor indicates that the operation is normal.

[0135] Step S420, the heater detection fails, that is, the operation flag of the set temperature sensor indicates abnormal operation. After this step, the cooling fan can be restarted to perform temperature change detection, which is not shown in the figure.

[0136] Step S421, continue to run the automatic detection process.

[0137] In summary, this embodiment provides a winding temperature sensor detection method to address the problem that during the existing factory inspection, the winding temperature sensor of the generator is installed inside the generator coil and cannot be touched or removed by personnel, resulting in the inability to actively change the temperature signal manually, and the temperature rise of the starting heater is slow and time-consuming. Specifically, the cooling fan of the wind turbine generator set is used to change the way the temperature change around the winding temperature sensor is affected from thermal radiation and heat conduction to thermal convection, thereby increasing the speed of temperature change; the generator cooling fan is started, and the maximum and minimum values ​​of the winding temperature sensor output are recorded in the process, and the change in temperature value is detected, so as to determine whether the winding temperature sensor and its circuit are normal, without the need for personnel to touch the winding temperature sensor to perform performance testing on the generator winding sensor; because the cooling method of the cooling fan is air flow, the detection of winding temperature sensors at multiple positions can be achieved simultaneously.

[0138] The present disclosure can realize the automation of wind turbine detection, ensure the compliance of detection and the standardization of judgment basis, and reduce the workload of technicians while ensuring the factory quality. The present disclosure can also effectively detect the data stagnation of the acquisition module, the virtual connection of the sensor line, etc., to ensure the quality and reliability of factory detection, and provide guarantee for the normal operation and one-key start of the wind turbine. In addition, the detection transposition of the present disclosure is easy to install and does not require the system to be modified, which can reduce the complexity of the factory detection operation of the wind turbine.

[0139] Figure 5 is a block diagram showing a transmission chain state identification device for a wind turbine generator set according to an embodiment of the present invention. Figure 5 As shown, the device includes a starting unit 50 and a determining unit 52 .

[0140] The starting unit 50 is configured to start any predetermined cooler of the wind turbine in response to a detection request of the target temperature sensor of the wind turbine, wherein the predetermined cooler affects the output result of the target temperature sensor; the determining unit 52 is configured to determine that the target temperature sensor is operating normally in response to the output result of the target temperature sensor indicating that the maximum amplitude of the temperature drop within a first time period exceeds a first preset value, and configure the operating identifier of the target temperature sensor to indicate that the operation is normal.

[0141] According to an embodiment of the present disclosure, the determination unit 52 is also configured to stop operating any predetermined cooler in response to the operation duration of any predetermined cooler reaching a first duration or the output result of the target temperature sensor indicating that the temperature has dropped by a second preset value before reaching the first duration, before determining that the target temperature sensor is operating normally, wherein the second preset value is greater than the first preset value.

[0142] According to an embodiment of the present disclosure, the determination unit 52 is also configured to, before stopping the operation of any predetermined cooler, start other predetermined coolers of the wind turbine generator set or increase the cooling capacity of any predetermined cooler in response to the output result of the target temperature sensor indicating that the temperature drop rate is less than a third preset value.

[0143] According to an embodiment of the present disclosure, the starting unit 50 is further configured to detect the starting status of all predetermined coolers of the wind turbine generator set; in response to all predetermined coolers not being started, start any predetermined cooler of the wind turbine generator set; wherein the determination unit 52 is further configured to, in response to any predetermined cooler among all predetermined coolers being started, obtain the output result of the target temperature sensor after any predetermined cooler is started; in response to the output result of the target temperature sensor indicating that the maximum amplitude of the temperature drop within the first time period exceeds a first preset value, determine that the target temperature sensor is operating normally, and configure the operation flag of the target temperature sensor to indicate that the operation is normal.

[0144] According to an embodiment of the present disclosure, the determination unit 52 is also configured to determine that the target temperature sensor is operating abnormally in response to an output result of the target temperature sensor indicating that the maximum temperature drop within a first time period does not exceed a first preset value, and configure the operation flag of the target temperature sensor to indicate an operation abnormality.

[0145] According to an embodiment of the present disclosure, the determination unit 52 is also configured to respond to the start of the automatic detection process of the wind turbine generator set, and run to a predetermined cooler detection sub-process, a target temperature sensor detection sub-process or a heater detection sub-process, and obtain an operation identifier of the target temperature sensor; in response to the operation identifier indicating that there is no abnormality in the operation, control the predetermined cooler detection sub-process, the target temperature sensor detection sub-process or the heater detection sub-process to run normally.

[0146] According to an embodiment of the present disclosure, the determination unit 52 is also configured to control a predetermined cooler detection sub-process, a target temperature sensor detection sub-process or a heater detection sub-process to detect the target temperature sensor in response to an operation identifier indicating an operation abnormality or the operation identifier has not been updated for more than a predetermined period of time.

[0147] According to an embodiment of the present disclosure, the determination unit 52 is also configured to control a predetermined cooler detection sub-process to detect the target temperature sensor; when the operation identifier after the predetermined cooler detection sub-process detects the operation, indicates that there is no abnormality in the operation, and the target temperature sensor detection sub-process and the heater detection sub-process are controlled to run normally; when the operation identifier after the predetermined cooler detection sub-process detects the operation, indicates that there is an abnormality in the operation, and the target temperature sensor detection sub-process is controlled to detect the target temperature sensor; when the operation identifier after the target temperature sensor detection sub-process detects the operation, indicates that there is no abnormality in the operation, and the heater detection sub-process is controlled to run normally; when the operation identifier after the target temperature sensor detection sub-process detects the operation, indicates that there is no abnormality in the operation, and the heater detection sub-process is controlled to detect the target temperature sensor.

[0148] According to an embodiment of the present disclosure, the determination unit 52 is also configured to start a predetermined cooler; in response to an output result of the target temperature sensor indicating that the maximum temperature drop within a first time period exceeds a first preset value, it is determined that the target temperature sensor is operating normally, and the operation identifier is configured to indicate that the operation is normal.

[0149] According to an embodiment of the present disclosure, the determination unit 52 is also configured to start any predetermined cooler of the wind turbine generator set; in response to an output result of the target temperature sensor indicating that the maximum temperature drop within a first time period exceeds a first preset value, it is determined that the target temperature sensor is operating normally, and the operation flag is configured to indicate that the operation is normal.

[0150] According to an embodiment of the present disclosure, the determination unit 52 is also configured to start the heater; in response to the output result of the target temperature sensor indicating that the maximum temperature rise within the second time period exceeds a fourth preset value, it is determined that the target temperature sensor is operating normally, and the operation identifier is configured to indicate that the operation is normal.

[0151] According to an embodiment of the present disclosure, the determination unit 52 is also configured to detect whether the output result of the target temperature sensor is within a normal range; in response to the output result of the target temperature sensor being within the normal range, the operation flag of the target temperature sensor is not changed; in response to the output result of the target temperature sensor not being within the normal range, the operation flag of the target temperature sensor is configured to indicate an operation abnormality.

[0152] According to an embodiment of the present disclosure, a computer-readable storage medium storing instructions is provided, wherein when the instructions are executed by at least one computing device, the at least one computing device is prompted to execute a method for detecting a temperature sensor of a wind turbine generator set as described in any of the above embodiments.

[0153] According to an embodiment of the present disclosure, a system is provided including at least one computing device and at least one storage device storing instructions, wherein the instructions, when executed by the at least one computing device, prompt the at least one computing device to execute a method for detecting a temperature sensor of a wind turbine generator set as described in any of the above embodiments.

[0154] Although some embodiments of the present disclosure have been shown and described, it will be appreciated by those skilled in the art that modifications may be made to the embodiments without departing from the principles and spirit of the present disclosure, the scope of which is defined by the claims and their equivalents.

Claims

1. A method for detecting a temperature sensor of a wind turbine generator set, characterized in that: include: In response to a detection request of a target temperature sensor of a wind turbine generator set, starting any predetermined cooler of the wind turbine generator set, wherein the predetermined cooler affects an output result of the target temperature sensor; In response to the output result of the target temperature sensor indicating that the maximum temperature drop within a first period of time exceeds a first preset value, it is determined that the target temperature sensor operates normally, and the operation flag of the target temperature sensor is configured to indicate that the operation is normal.

2. The detection method according to claim 1, characterized in that Before determining that the target temperature sensor operates normally, the method further includes: In response to the operation duration of any of the predetermined coolers reaching the first duration or the output result of the target temperature sensor indicating that the temperature has dropped by a second preset value before reaching the first duration, the operation of any of the predetermined coolers is stopped, wherein the second preset value is greater than the first preset value.

3. The detection method according to claim 1, characterized in that After starting any predetermined cooler of the wind turbine generator set, the method further comprises: In response to the output result of the target temperature sensor indicating that the temperature drop rate is less than a third preset value, other predetermined coolers of the wind turbine generator set are started or the cooling capacity of any of the predetermined coolers is increased.

4. The detection method according to claim 1, characterized in that The step of starting any predetermined cooler of the wind turbine generator set comprises: Detecting the startup status of all predetermined coolers of the wind turbine generator set; In response to all predetermined coolers not being started, starting any predetermined cooler of the wind turbine generator set; Wherein, the detection method further comprises: In response to any predetermined cooler among all the predetermined coolers being started, obtaining an output result of the target temperature sensor after the any predetermined cooler is started; In response to the output result of the target temperature sensor indicating that the maximum temperature drop within the first time period exceeds the first preset value, it is determined that the target temperature sensor operates normally, and the operation flag of the target temperature sensor is configured to indicate that the operation is normal.

5. The detection method according to claim 1, characterized in that Also includes: In response to the output result of the target temperature sensor indicating that the maximum temperature drop within the first time period does not exceed the first preset value, it is determined that the target temperature sensor is operating abnormally, and the operation flag of the target temperature sensor is configured to indicate abnormal operation.

6. The detection method according to claim 5, characterized in that Also includes: In response to the automatic detection process of the wind turbine generator set being started and running to a predetermined cooler detection sub-process, a target temperature sensor detection sub-process or a heater detection sub-process, acquiring an operation identifier of the target temperature sensor; In response to the operation identifier indicating that there is no abnormality in operation, the predetermined cooler detection sub-process, the target temperature sensor detection sub-process or the heater detection sub-process is controlled to operate normally.

7. The detection method according to claim 6, characterized in that Also includes: In response to the operation identifier indicating abnormal operation or the operation identifier not being updated for more than a predetermined period of time, the predetermined cooler detection sub-process, the target temperature sensor detection sub-process or the heater detection sub-process is controlled to detect the target temperature sensor.

8. The detection method according to claim 7, characterized in that The controlling the predetermined cooler detection sub-process, the target temperature sensor detection sub-process or the heater detection sub-process to detect the target temperature sensor includes: Controlling the predetermined cooler detection sub-process to detect the target temperature sensor; If the operation mark after the predetermined cooler detection sub-process detects that there is no abnormality in the operation, the target temperature sensor detection sub-process and the heater detection sub-process are controlled to operate normally; if the operation mark after the predetermined cooler detection sub-process detects that there is abnormality in the operation, the target temperature sensor detection sub-process is controlled to detect the target temperature sensor; The operation identifier after the target temperature sensor detection sub-process detects that there is no abnormality in the operation, and the heater detection sub-process is controlled to operate normally; the operation identifier after the target temperature sensor detection sub-process detects that there is an abnormality in the operation, and the heater detection sub-process is controlled to detect the target temperature sensor.

9. The detection method according to claim 7, characterized in that: The controlling the predetermined cooler detection sub-process to detect the target temperature sensor includes: Starting the predetermined cooler; In response to the output result of the target temperature sensor indicating that the maximum amplitude of the temperature drop within the first time period exceeds the first preset value, it is determined that the target temperature sensor operates normally, and the operation flag is configured to indicate that the operation is normal.

10. The detection method according to claim 7, characterized in that: The control of the target temperature sensor detection sub-process to detect the target temperature sensor includes: Starting any predetermined cooler of the wind turbine generator set; In response to the output result of the target temperature sensor indicating that the maximum amplitude of the temperature drop within the first time period exceeds the first preset value, it is determined that the target temperature sensor operates normally, and the operation flag is configured to indicate that the operation is normal.

11. The detection method according to claim 7, characterized in that: The controlling the heater detection sub-process to detect the target temperature sensor includes: activating the heater; In response to the output result of the target temperature sensor indicating that the maximum amplitude of the temperature rise within the second time period exceeds a fourth preset value, it is determined that the target temperature sensor operates normally, and the operation flag is configured to indicate that the operation is normal.

12. The detection method according to claim 6, characterized in that: The control of the target temperature sensor detection sub-process to run normally includes: Detecting whether the output result of the target temperature sensor is within a normal range; In response to the output result of the target temperature sensor being within the normal range, not changing the operation identification of the target temperature sensor; In response to the output result of the target temperature sensor not being within the normal range, the operation flag of the target temperature sensor is configured to indicate an operation abnormality.

13. A detection device for a temperature sensor of a wind turbine generator set, characterized in that: include: a start-up unit configured to start any predetermined cooler of the wind turbine generator set in response to a detection request of a target temperature sensor of the wind turbine generator set, wherein the predetermined cooler affects an output result of the target temperature sensor; The determination unit is configured to determine that the target temperature sensor is operating normally in response to an output result of the target temperature sensor indicating that the maximum temperature drop within a first time period exceeds a first preset value, and configure the operation identifier of the target temperature sensor to indicate that the operation is normal.

14. A computer-readable storage medium storing instructions, characterized in that: When the instruction is executed by at least one computing device, the at least one computing device is prompted to execute the method for detecting a temperature sensor of a wind turbine generator set according to any one of claims 1 to 12.

15. A system comprising at least one computing device and at least one storage device storing instructions, characterized in that: When the instructions are executed by the at least one computing device, the at least one computing device is prompted to execute the method for detecting a temperature sensor of a wind turbine generator set according to any one of claims 1 to 12.

16. A wind turbine generator set, characterized in that: A detection device comprising a temperature sensor of a wind generator set as claimed in claim 13.

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