Wind generating set and wind generating set rotating speed measuring device

Abstract

The utility model relates to a wind generating set and a wind generating set rotating speed measuring device. The wind generating set rotating speed measuring device comprises a signal simulator used for simulating a trigger signal of a rotating speed proximity switch of a wind generating set; and the rotating speed measuring circuit is connected with the signal simulator and is used for measuring the rotating speed of the wind generating set according to the trigger signal output by the signal simulator. According to the wind generating set and the wind generating set rotating speed measuring device, the convenience, safety and flexibility of rotating speed measurement of the wind generating set can be improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of wind turbines, and in particular to a wind turbine generator set and a wind turbine generator set rotation speed measuring device. Background Art

[0002] A wind turbine is an electrical device that converts wind energy into mechanical work, which drives the rotor to rotate and finally outputs alternating current. In some application scenarios of wind turbines, it is necessary to use a corresponding speed measuring device to measure the speed of the wind turbine. Utility Model Content

[0003] The purpose of the present disclosure is to provide a wind turbine generator set and a wind turbine generator set rotation speed measuring device, which can improve the convenience, safety and flexibility of wind turbine generator set rotation speed measurement.

[0004] In order to achieve the above-mentioned objectives, in a first aspect, the present disclosure provides a wind turbine speed measuring device, comprising: a signal simulator, used to simulate a trigger signal of a speed proximity switch of the wind turbine; a speed measurement circuit connected to the signal simulator, and the speed measurement circuit is used to measure the speed of the wind turbine according to the trigger signal output by the signal simulator.

[0005] Optionally, the speed proximity switch includes a first proximity switch and a second proximity switch, the signal simulator includes a first signal output terminal and a second signal output terminal, the speed measurement circuit includes a first signal input terminal and a second signal input terminal, the first signal output terminal is connected to the first signal input terminal, the second signal output terminal is connected to the second signal input terminal, the first signal output terminal is used to output a simulated trigger signal of the first proximity switch, and the second signal output terminal is used to output a simulated trigger signal of the second proximity switch.

[0006] Optionally, the wind turbine generator set speed measurement device also includes a frequency adjustment circuit, which is connected to the signal simulator, and is used to adjust the trigger signal frequency output by the signal simulator, different trigger signal frequencies correspond to different generator set speeds, and the speed measurement circuit is used to measure the speed of the wind turbine generator set according to the frequency of the trigger signal output by the signal simulator.

[0007] Optionally, the rotation speed measurement circuit includes: an overspeed measurement circuit, configured to perform overspeed measurement on the wind turbine generator set according to a trigger signal output by the signal simulator and a frequency of the trigger signal output by the signal simulator.

[0008] Optionally, the overspeed measurement circuit includes an overspeed relay, and the trigger signal output by the signal simulator is used to input the overspeed relay. The overspeed measurement circuit is used to perform overspeed measurement on the wind turbine generator set based on the switching state of the overspeed relay under the trigger signal and the frequency of the trigger signal output by the signal simulator.

[0009] Optionally, the signal simulator is a pulse signal generator, and the pulse signal generator includes the frequency adjustment circuit.

[0010] Optionally, the pulse signal generator includes: a shell, a frequency adjustment button is provided on the shell, the frequency adjustment circuit is provided in the shell, the frequency adjustment button is connected to the frequency adjustment circuit, the frequency adjustment button is used to trigger a frequency adjustment instruction, and the frequency adjustment circuit is used to perform frequency adjustment according to the frequency adjustment instruction.

[0011] Optionally, the pulse signal generator includes: a signal shielding line for resisting electromagnetic interference.

[0012] Optionally, the signal simulator is further used to simulate a target trigger signal of a speed proximity switch of the wind turbine generator set in a sidewind yaw state;

[0013] The speed measurement circuit is connected to the side wind yaw protection circuit of the wind turbine generator set. The speed measurement circuit is also used to input the target trigger signal output by the signal simulator into the side wind yaw protection circuit. The speed measurement circuit is used to perform a side wind yaw protection function test on the wind turbine generator set according to the operating state of the side wind yaw protection circuit under the target trigger signal.

[0014] In a second aspect, the present disclosure provides a wind turbine generator set, comprising: the wind turbine generator set rotation speed measuring device as described in the first aspect.

[0015] Through the above technical solution, a signal simulator is added to the speed measurement device, and the signal simulator can simulate the trigger signal of the speed proximity switch of the wind turbine. Based on the trigger signal, the speed measurement circuit can measure the speed of the wind turbine. Since the speed measurement of the wind turbine can be realized based on the trigger signal of the speed proximity switch, the signal simulator is used to replace the wind turbine contact switch signal wiring, so there is no need to start the wind turbine. Then, the speed measurement can also be realized in the maintenance state of the wind turbine, which improves the convenience and flexibility of the speed measurement; and the wiring of the speed measurement device is simple, and the required measurement cost is also low. On the basis of not having to start the wind turbine, the measurement safety is also high. Therefore, this technical solution can improve the convenience, safety and flexibility of the speed measurement of the wind turbine.

[0016] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0018] Figure 1 The figure is a block diagram of a device for measuring the rotation speed of a wind turbine generator set according to an exemplary embodiment.

[0019] Figure 2 The diagram is a schematic diagram showing a circuit connection relationship according to an exemplary embodiment.

[0020] Figure 3 It is a structural block diagram of another wind turbine generator rotation speed measuring device according to an exemplary embodiment.

[0021] Figure 4 is a schematic diagram of a pulse signal generator according to an exemplary embodiment. DETAILED DESCRIPTION

[0022] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0023] In the present disclosure, unless otherwise specified, directional words such as "up, down, left, right, front, back", etc. are used only to facilitate the description of the present disclosure and simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.

[0024] A wind turbine is an electrical device that converts wind energy into mechanical work, which drives the rotor to rotate and finally outputs alternating current. In some application scenarios of wind turbines, it is necessary to use a corresponding speed measuring device to measure the speed of the wind turbine.

[0025] For example, by measuring the rotation speed of the wind turbine generator set, the overspeed condition of the wind turbine generator set can be determined. By measuring the response of the wind turbine generator set in the overspeed condition, it can be determined whether the function of the wind turbine generator set is abnormal.

[0026] In the related art, when measuring the speed of a wind turbine generator set, the corresponding measuring device is directly connected to the wind turbine generator set in operation. This speed measurement method cannot be used when the unit is in maintenance state. In addition, when measuring in operation, the requirements for measuring personnel are high and the labor cost is high. In addition, when measuring in operation, safety is difficult to guarantee.

[0027] Based on this, the disclosed embodiment provides a technical solution, in which, since the speed measurement of the wind turbine generator set can be realized based on the trigger signal of the speed proximity switch, the signal wiring of the wind turbine generator set contact switch is replaced by a signal simulator, so that there is no need to start the wind turbine generator set. Then, the speed measurement can also be realized in the maintenance state of the wind turbine generator set, thereby improving the convenience and flexibility of the speed measurement; and the speed measurement device has simple wiring, and the required measurement cost is also low. On the basis of not having to start the wind turbine generator set, the measurement safety is also high. Thus, the convenience, safety and flexibility of the speed measurement of the wind turbine generator set can be improved.

[0028] Figure 1 is a block diagram of a wind turbine generator speed measuring device 10 according to an exemplary embodiment. Figure 1 As shown, the device includes: a signal simulator 11 and a rotation speed measurement circuit 12.

[0029] The signal simulator 11 is used to simulate the trigger signal of the speed proximity switch of the wind turbine generator set.

[0030] In the speed measurement of wind turbines in the related art, two speed proximity switches are installed on the fixed shaft of the generator, and a code disk is installed on the rotating shaft of the generator. During the rotation of the impeller, the proximity switch is triggered by the code disk to output a high level, which is the proximity switch trigger signal. The trigger signal is transmitted to the speed measurement module, and a voltage of 0-10V is formed through digital-to-analog conversion, which is then transmitted to the corresponding measurement module for measurement.

[0031] It can be seen that the speed measurement of the wind turbine generator set is realized based on the trigger signal of the speed proximity switch. On the basis that the signal simulator 11 is used to simulate the trigger signal of the speed proximity switch, the signal simulator 11 can replace the original generator connection, so when the wind turbine generator set is in maintenance state, it does not affect the speed measurement.

[0032] The rotation speed measurement circuit 12 is used to measure the rotation speed of the wind turbine generator set according to the trigger signal output by the signal simulator 11. That is, the analog trigger signal output by the signal simulator 11 is input into the rotation speed measurement circuit 12 to realize the rotation speed measurement.

[0033] In some embodiments, the trigger signal of the speed proximity switch can be understood as a form of the generator speed signal, and the generator speed can be determined by analyzing the trigger signal. Therefore, the signal simulator 11 can also be understood as a simulated generator speed signal.

[0034] In some embodiments, the signal simulator 11 may be a pulse signal generator, a function signal generator, a random signal generator, etc. According to the signal form of the trigger signal of the proximity switch in different application scenarios, a suitable signal simulator 11 may be selected.

[0035] For example, a pulse signal generator is a device specially designed to generate rectangular pulse signals, the width, amplitude and repetition frequency of which can be adjusted as needed, so that the pulse signal generator can be used to simulate the trigger signal of a contact switch.

[0036] In some embodiments, the number of the speed proximity switch may be one. In this case, the signal simulator 11 may only simulate the trigger signal of the one speed proximity switch.

[0037] In some embodiments, the number of the speed proximity switches is usually two. In this case, the signal simulator 11 needs to simulate the trigger signals of the two speed proximity switches respectively.

[0038] Therefore, the speed proximity switch may include a first proximity switch and a second proximity switch. Accordingly, based on the first proximity switch and the second proximity switch, the corresponding connection relationship between the signal simulator 11 and the speed measurement circuit 12 may be configured.

[0039] Figure 2 is a schematic diagram showing a circuit connection relationship according to an exemplary embodiment. Figure 2 As shown, the signal simulator 11 includes a first signal output terminal 110 and a second signal output terminal 112 , and the rotation speed measurement circuit 12 includes a first signal input terminal 120 and a second signal input terminal 122 .

[0040] The first signal output terminal 110 is connected to the first signal input terminal 120, and the second signal output terminal 112 is connected to the second signal input terminal 122. The first signal output terminal 110 is used to output a trigger signal of a simulated first proximity switch, and the second signal output terminal 112 is used to output a trigger signal of a simulated second proximity switch.

[0041] In some embodiments, the signal output end and the signal input end may be connected via corresponding port connection lines, and the signal output end or the signal input end may be a jack type or a serial port type, etc., which is not limited here.

[0042] Among them, the trigger signal of the simulated proximity switch is Figure 2 It is represented as pulse signal 1 and pulse signal 2.

[0043] and, in Figure 2 In the embodiment, the trigger signal of the first proximity switch can be used to characterize the generator speed 1, and the trigger signal of the second proximity switch can be used to characterize the generator speed 2.

[0044] Therefore, on the basis that the rotation speed measurement circuit 12 is unchanged compared with the rotation speed measurement circuit 12 in the related art, a corresponding rotation speed measurement circuit 12 can be implemented.

[0045] Figure 3 is a structural block diagram of another wind turbine generator speed measuring device 10 according to an exemplary embodiment. Figure 3 As shown, in Figure 1 On the basis of, the device also includes a frequency adjustment circuit 13, the frequency adjustment circuit 13 is connected to the signal simulator 11, the frequency adjustment circuit 13 is used to adjust the trigger signal frequency output by the signal simulator 11, different trigger signal frequencies correspond to different generator set speeds, and the speed measurement circuit 12 is used to measure the speed of the wind turbine generator set according to the frequency of the trigger signal output by the signal simulator 11.

[0046] In this embodiment, the frequency of the trigger signal output by the signal simulator 11 is adjustable. On this basis, the generator speed can be changed by changing the frequency of the trigger signal, so that the speed can be measured.

[0047] In some embodiments, when the signal simulator 11 is an implementation of a pulse signal generator, the pulse signal generator may include a frequency adjustment circuit 13, that is, the frequency adjustment circuit 13 is a circuit built into the pulse signal generator, and the pulse signal generator itself can achieve frequency adjustment.

[0048] Figure 4 is a schematic diagram of a pulse signal generator 40 according to an exemplary embodiment. Figure 4 As shown, the pulse signal generator 40 includes a housing 41, a frequency adjustment button 42 is provided on the housing 41, and a frequency adjustment circuit 13 is provided in the housing 41. The frequency adjustment button 42 is connected to the frequency adjustment circuit 13, the frequency adjustment button 42 is used to trigger a frequency adjustment instruction, and the frequency adjustment circuit 13 is used to adjust the frequency according to the frequency adjustment instruction.

[0049] The frequency adjustment circuit 13 is arranged inside the housing 41 and belongs to the internal circuit of the pulse signal generator 40. Figure 4 Not shown in FIG.

[0050] It can be understood that the frequency adjustment circuit 13 of the pulse signal generator 40 can refer to the mature technology in the field and will not be introduced in detail here.

[0051] In some embodiments, the pulse signal generator 40 may further include a signal shielding line, which can resist electromagnetic interference, thereby ensuring the stability of the signal output.

[0052] In some embodiments, the pulse signal generator 40 may further include power lines, a positive power line, and a negative power line.

[0053] Therefore, the pulse signal generator 40 can have two functions. The pulse signal generator 40 can output two pulse signals and adjust the pulse signal output frequency. It has two pulse signal output channels, two 24VDC power lines (one positive and one negative), and a signal shielding line to resist electromagnetic interference and ensure the stability of signal output.

[0054] Regarding other functions or some implementations of the pulse signal generator 40 , reference may be made to mature technologies in the art and are not limited here.

[0055] In the disclosed embodiment, the function can be adjusted based on the frequency to achieve overspeed measurement. Regarding overspeed measurement, it can be understood as measuring the overspeed value of the generator speed. By measuring the overspeed value, the overspeed threshold can be configured, and then some corresponding overspeed judgments can be made.

[0056] As an optional implementation, the rotation speed measurement circuit 12 includes: an overspeed measurement circuit, which is used to perform overspeed measurement on the wind turbine generator set according to the trigger signal output by the signal simulator 11 and the frequency of the trigger signal output by the signal simulator 11 .

[0057] In this implementation, the frequency of the trigger signal output by the signal simulator 11 is changed, and when it is determined that the trigger signal output by the signal simulator 11 is an overspeed trigger signal, the corresponding overspeed value can be determined based on the overspeed trigger signal.

[0058] It can be understood that the frequency and the rotation speed may have a corresponding relationship. For example, the higher the frequency, the higher the rotation speed. Therefore, the rotation speed can be determined based on the frequency to achieve rotation speed measurement.

[0059] Therefore, as an optional embodiment, the overspeed measurement circuit includes an overspeed relay, the trigger signal output by the signal simulator 11 is used to input the overspeed relay, and the overspeed measurement circuit is used to perform overspeed measurement on the wind turbine generator set based on the switching state of the overspeed relay under the trigger signal and the frequency of the trigger signal output by the signal simulator 11.

[0060] In some embodiments, the overspeed relay is a switch relay based on overspeed measurement setting, and its switch state includes open and closed. When the speed is in the overspeed state, the overspeed relay is open; when the speed is in the non-overspeed state, the overspeed relay remains closed.

[0061] Thus, the frequency of the trigger signal output by the signal simulator 11 when the overspeed relay changes from the closed state to the open state is determined, and the overspeed value is determined based on the frequency to achieve overspeed measurement.

[0062] Therefore, accurate measurement of the overspeed value can be determined by intuitively observing the closing and opening states of the overspeed relay.

[0063] In some embodiments, when measuring the rotation speed of a wind turbine generator set, it is usually also measured whether the sidewind yaw function can be triggered normally. The measurement principle is to make the generator speed in a sidewind yaw state, and then determine whether the sidewind yaw function is triggered.

[0064] Regarding crosswind yaw, it means that under crosswind conditions, the direction of the unit is adjusted to reduce the impact of the sidewind on the unit and ensure the stable operation and safety of the unit.

[0065] Therefore, a sidewind yaw protection circuit is usually configured in a wind turbine generator set, and the sidewind yaw protection circuit starts to operate when it is detected that the wind turbine generator set is in a sidewind state.

[0066] The side wind state may be caused by overspeed or other reasons. Therefore, the trigger signal under the overspeed state can be simulated to detect whether the side wind yaw function is normal. The trigger signal that may be caused by other reasons can also be simulated to detect whether the side wind yaw function is normal.

[0067] Therefore, as an optional implementation, the signal simulator 11 is also used to simulate the target trigger signal of the speed proximity switch of the wind turbine generator set in the sidewind yaw state.

[0068] In some embodiments, the target trigger signal is a trigger signal under an overspeed condition, or a trigger signal corresponding to other sidewind yaw conditions.

[0069] Correspondingly, the speed measurement circuit 12 can be connected to the side wind yaw protection circuit of the wind turbine generator set. The speed measurement circuit 12 is also used to input the target trigger signal output by the signal simulator 11 into the side wind yaw protection circuit. The speed measurement circuit 12 is used to perform a side wind yaw protection function test on the wind turbine generator set according to the operating state of the side wind yaw protection circuit under the target trigger signal.

[0070] In this embodiment, if the side wind yaw protection function can be triggered normally, then after the target trigger signal is input into the side wind yaw protection circuit, the side wind yaw protection circuit is in operation. If the side wind yaw protection function cannot be triggered normally, then after the target trigger signal is input into the side wind yaw protection circuit, the side wind yaw protection circuit is in non-operation.

[0071] Therefore, according to the operating state of the side wind yaw protection circuit under the target trigger signal, it is possible to test whether the side wind yaw protection function is normal.

[0072] In some embodiments, an overspeed measurement may be performed first, and after the overspeed setting value is determined, the crosswind yaw function test may be performed.

[0073] In some embodiments, the side wind yaw protection circuit may also be a part of the rotation speed measurement circuit 12 .

[0074] In some embodiments, the specific implementation of the sidewind yaw protection circuit can refer to the mature technology in the field and will not be described in detail here.

[0075] In some embodiments, the wind turbine generator set rotation speed measuring device 10 may be used as a part of the wind turbine generator set. Therefore, the wind turbine generator set may include the aforementioned wind turbine generator set rotation speed measuring device 10.

[0076] In some embodiments, except that the signal simulator 11 is a newly added component compared to the related art, other circuits or components can adopt the same implementation as the related art.

[0077] Through the above-mentioned measuring device, in the maintenance state of the unit, the pulse signal generator 40 is used to simulate the triggering of the proximity switch, and the output pulse signal enters the corresponding measuring circuit. By changing the frequency of the pulse, and then changing the size of the generator speed, the overspeed setting value of the wind turbine can be directly measured. And further determine whether the side wind yaw function of the wind turbine is normally triggered in the overspeed state. In this way, the generator overspeed check can be completed in the maintenance state of the unit, and the wind turbine overspeed test can be completed in a fast and safe state.

[0078] Furthermore, compared with the related art, it has the following technical effects:

[0079] High test efficiency: by replacing the wind turbine pulse signal wiring, the device is connected to the speed measurement circuit 12. By adjusting the frequency of the pulse signal generator 40, the closing and opening of the overspeed relay and whether the unit has sidewind yaw can be visually observed, so as to directly determine whether the overspeed protection function of the wind turbine is normally executed.

[0080] High test safety: During the half-year or full-year maintenance, when the unit is in maintenance state, this device is connected to the wind turbine speed measurement circuit to directly measure the speed and yaw crosswind function of the unit. Compared with the previous speed measurement in the running state, it greatly improves the safety of equipment and personnel during the test.

[0081] Reduce maintenance costs: The generator overspeed test is simple and clear, and can be completed by one person in the engine room. Compared with the previous test that required one person at the tower base and one person in the engine room, it reduces the number of maintenance personnel and reduces the test time from the original 40 minutes to 10 minutes.

[0082] Therefore, the device is time-saving and labor-saving, safe and reliable, flexible and fast, and has a wide range of subsequent maintenance and use.

[0083] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0084] In the above detailed description, reference is made to the accompanying drawings, which illustrate specific aspects of the present disclosure that can be practiced by way of illustration. In this regard, terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating directions or representing positional relationships, can be used with reference to the orientation of the described figures. Since the components of the described device can be positioned in a plurality of different orientations, directional terms can be used for illustrative purposes rather than restrictive. It should be understood that other aspects can be utilized and structural or logical changes can be made without departing from the concepts of the present disclosure. Therefore, the following detailed description should not be considered in a limiting sense.

[0085] It should be understood that, unless otherwise specifically noted, the features of some embodiments of the various present disclosures described herein may be combined with each other. As used herein, the term "and / or" includes any one of the related listed items and any combination of any two or more; similarly, "at least one of . . . " includes any one of the related listed items and any combination of any two or more.

[0086] It should be understood that, unless otherwise clearly specified and limited, the terms "joining", "attaching", "installing", "connecting", "connecting", "fixing" and the like used in the embodiments of the present disclosure should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For ordinary technicians in this field, the specific meanings of the above terms in this article can be understood according to specific circumstances.

[0087] In addition, the term "above" used in relation to a component, element or material layer formed "above" or located "above" a surface may be used herein to indicate that the component, element or material layer is "indirectly" positioned (e.g., placed, formed, deposited, etc.) on the surface such that one or more additional components, elements or layers are arranged between the surface and the component, element or material layer. However, the term "above" used in relation to a component, element or material layer formed "above" or located "above" a surface may also optionally have a specific meaning: the component, element or material layer is "directly" positioned (e.g., placed, formed, deposited, etc.) on the surface, such as in direct contact with the surface.

[0088] Although terms such as "first", "second" and "third" can be used herein to describe various components, parts, regions, layers or sections, these components, parts, regions, layers or sections are not limited to these terms. On the contrary, these terms are only used to distinguish one component, component, region, layer or section from another component, component, region, layer or section. Therefore, without departing from the teachings of each example, the first component, component, region, layer or section mentioned in the examples described herein may also be referred to as the second component, component, region, layer or section. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first" and "second" may expressly or implicitly include at least one of the features. In the description herein, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0089] It should be understood that spatially relative terms such as "above", "upper", "below", and "lower" are used herein to describe the relationship of one element to another element shown in the figures. In addition to the orientation depicted in the drawings, such spatially relative terms are also intended to include different orientations of the device in use or operation. For example, if the device in the drawings is turned over, the element described as being "above" or "upper" relative to another element will be "below" or "lower" relative to the other element. Therefore, depending on the spatial orientation of the device, the term "above" includes both upper and lower orientations. The device may have other orientations (e.g., rotated 90 degrees or in other orientations), and the spatially relative terms used herein should be interpreted accordingly.

[0090] In addition, the word "exemplary" is used herein to indicate serving as an example, instance, or diagram. Any aspect or design described as "exemplary" in this article is not necessarily understood to be advantageous compared to other aspects or designs. On the contrary, the use of the word exemplary is intended to present concepts in a specific way. As used herein, the term "or" is intended to represent an inclusive "or" rather than an exclusive "or". That is, unless otherwise specified or clear from the context, "X applies A or B" is intended to represent any one of the natural inclusive arrangements. That is, if X applies A; X applies B; or X applies both A and B, "X applies A or B" is satisfied under any of the aforementioned examples. In addition, unless otherwise specified or clearly pointed to a singular form from the context, the articles "one" and "an" as used in this application and the appended claims are generally understood to mean "one or more".

[0091] Likewise, although the present disclosure has been shown and described with respect to one or more implementations, equivalent variations and modifications will occur to those skilled in the art after reading and understanding the specification and drawings. The present disclosure includes all such modifications and variations and is limited only by the scope of the claims. In particular, with respect to the various functions performed by the components (e.g., elements, resources, etc.) described above, unless otherwise indicated, the terms used to describe such components are intended to correspond to any component (functionally equivalent) that performs the specific functions of the described components, even if the structure is not equivalent to the disclosed structure. In addition, although specific features of the present disclosure may have been disclosed with respect to only one of several implementations, such features may be combined with one or more other features of other implementations as may be desired and beneficial to any given or specific application. In addition, with respect to "including", "having", "having", "having", or variations thereof used in a specific embodiment or claim, such terms are intended to be inclusive in a manner similar to the term "comprising".

[0092] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0093] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A wind turbine generator speed measuring device, characterized in that: include: A signal simulator, used to simulate the trigger signal of the speed proximity switch of the wind turbine generator set; A rotation speed measurement circuit connected to the signal simulator, wherein the rotation speed measurement circuit is used to measure the rotation speed of the wind turbine generator set according to a trigger signal output by the signal simulator.

2. The wind turbine generator speed measuring device according to claim 1, characterized in that: The speed proximity switch includes a first proximity switch and a second proximity switch, the signal simulator includes a first signal output end and a second signal output end, the speed measurement circuit includes a first signal input end and a second signal input end, the first signal output end is connected to the first signal input end, the second signal output end is connected to the second signal input end, the first signal output end is used to output a simulated trigger signal of the first proximity switch, and the second signal output end is used to output a simulated trigger signal of the second proximity switch.

3. The wind turbine generator speed measuring device according to claim 1, characterized in that: The wind turbine generator set speed measurement device also includes a frequency adjustment circuit, which is connected to the signal simulator. The frequency adjustment circuit is used to adjust the trigger signal frequency output by the signal simulator. Different trigger signal frequencies correspond to different generator set speeds. The speed measurement circuit is used to measure the speed of the wind turbine generator set according to the frequency of the trigger signal output by the signal simulator.

4. The wind turbine generator speed measuring device according to claim 3, characterized in that: The rotation speed measurement circuit comprises: an overspeed measurement circuit, which is used to perform overspeed measurement on the wind turbine generator set according to the trigger signal output by the signal simulator and the frequency of the trigger signal output by the signal simulator.

5. The wind turbine generator speed measuring device according to claim 4, characterized in that: The overspeed measurement circuit includes an overspeed relay, and the trigger signal output by the signal simulator is used to input the overspeed relay. The overspeed measurement circuit is used to perform overspeed measurement on the wind turbine generator set according to the switching state of the overspeed relay under the trigger signal and the frequency of the trigger signal output by the signal simulator.

6. The wind turbine generator speed measuring device according to any one of claims 3 to 5, characterized in that: The signal simulator is a pulse signal generator, and the pulse signal generator includes the frequency adjustment circuit.

7. The wind turbine generator speed measuring device according to claim 6, characterized in that: The pulse signal generator includes: a shell, a frequency adjustment button is arranged on the shell, the frequency adjustment circuit is arranged in the shell, the frequency adjustment button is connected to the frequency adjustment circuit, the frequency adjustment button is used to trigger a frequency adjustment instruction, and the frequency adjustment circuit is used to perform frequency adjustment according to the frequency adjustment instruction.

8. The wind turbine generator speed measuring device according to claim 6, characterized in that: The pulse signal generator comprises: a signal shielding line for resisting electromagnetic interference.

9. The wind turbine generator speed measuring device according to claim 1, characterized in that: The signal simulator is also used to simulate the target trigger signal of the speed proximity switch of the wind turbine generator set in the sidewind yaw state; The speed measurement circuit is connected to the side wind yaw protection circuit of the wind turbine generator set. The speed measurement circuit is also used to input the target trigger signal output by the signal simulator into the side wind yaw protection circuit. The speed measurement circuit is used to perform a side wind yaw protection function test on the wind turbine generator set according to the operating state of the side wind yaw protection circuit under the target trigger signal.

10. A wind turbine generator set, characterized in that: include: A wind turbine generator speed measuring device as claimed in any one of claims 1 to 9.

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