Wind power generation system and noise acquisition system

Abstract

The utility model discloses a wind power generation system and a noise acquisition system, and belongs to the field of wind power generation. The wind power generation system comprises a wind turbine generator set which is arranged on a setting plane and is perpendicular to the setting plane; the multiple sound sensors are located on the setting plane and arranged around the wind turbine generator set at intervals, the projections of every two adjacent sound sensors and the wind turbine generator set on the setting plane form a sector with the projection as the vertex, and the sound sensors are used for collecting sound data; the noise collection device is connected with the sound sensors and the wind turbine generator set, the noise collection device is used for obtaining fan state data of the wind turbine generator set and obtaining sound data collected by at least one sound sensor, and the obtained sound data comprises sound data collected by the sound sensor located in the tail direction of the wind turbine generator set; the fan state data comprises yaw angle data. According to the embodiment of the invention, the noise data acquisition efficiency can be improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of wind power generation, and particularly relates to a wind power generation system and a noise collection system. BACKGROUND

[0002] In the process of operation, a wind turbine is affected by airflow, and in addition, friction between components is generated when the wind turbine rotates, so that the wind turbine generates a large noise. On one hand, the noise generated by the wind turbine is closely related to the state of the wind turbine, and to some extent, the state of the wind turbine can be understood through the noise of the wind turbine, so it is necessary to collect noise data of the wind turbine; on the other hand, since the noise generated by the wind turbine is large, it is necessary to control the noise generated by the wind turbine, and it is also necessary to collect noise data of the wind turbine for noise control research.

[0003] At present, the noise collection device can be arranged at the back of the wind turbine, and the noise of the wind turbine is collected by operating the collection device. However, the environment near the wind turbine is complex and changeable, if the wind direction is stable, the noise of the wind turbine can be collected smoothly, if the wind direction is unstable, the noise collection device needs to be frequently moved, so that the noise collection device can collect noise meeting the requirements. However, frequent movement of the noise collection device will have a great adverse effect on the effectiveness of the noise, and even effective noise data cannot be obtained, which reduces the efficiency of noise data collection. CONTENT OF THE UTILITY MODEL

[0004] The wind power generation system and the noise collection system provided by the embodiments of the present application can improve the efficiency of noise data collection.

[0005] In a first aspect, the embodiments of the present application provide a wind power generation system, comprising: a wind turbine, arranged on a setting plane, perpendicular to the setting plane; a sound sensor, a plurality of sound sensors are arranged on the setting plane, and are arranged at intervals around the wind turbine, and two adjacent sound sensors and the projection of the wind turbine on the setting plane form a sector with the projection as the apex, and the sound sensor is used for collecting sound data; a noise collection device, connected with the sound sensor, and connected with the wind turbine, the noise collection device is used for obtaining fan state data of the wind turbine and obtaining sound data collected by at least one sound sensor, the obtained sound data includes sound data collected by a sound sensor in the direction of the tail of the wind turbine, and the fan state data includes yaw angle data.

[0006] In some possible embodiments, the plurality of sound sensors are located on at least a part of an arc of a target circle with the projection as the center and a first length as the radius.

[0007] In some possible embodiments, the plurality of sound sensors are uniformly distributed on the target circle; and the first length is the sum of the height of the hub of the wind turbine from the setting plane and the radius of the impeller of the wind turbine.

[0008] In some possible embodiments, the central angle of the sector formed by the projection of the two adjacent sound sensors is 30°.

[0009] In some possible embodiments, the wind power system further comprises: a ring-shaped sliding rail arranged on the setting plane with the projection as the center; a plurality of bases slidably connected with the ring-shaped sliding rail, and each base is provided with a clamping structure for fixing the base at a target position of the ring-shaped sliding rail, and the sound sensor is detachably connected with the base.

[0010] In some possible embodiments, the noise collecting device comprises: a remote controller connected with the sound sensors, and each sound sensor has a data transmission channel with the remote controller, and the sound data collected by the sound sensor is transmitted to the remote controller through the corresponding data transmission channel; a single-channel data acquisition module connected with the remote controller, for acquiring the sound data transmitted by one data transmission channel from the remote controller; and a fan test controller connected with the wind turbine and the remote controller, for acquiring the fan state data from the wind turbine and transmitting the fan state data to the remote controller, and the yaw angle data corresponds to the position of the sound sensor from which the sound data is acquired.

[0011] In some possible embodiments, the remote controller has a plurality of first channel interfaces, and each first channel interface is connected with a sound sensor through a connection signal line; a switch unit is arranged on a data transmission line formed by the first channel interface, the connection signal line and the sound sensor, and the switch unit is turned on or turned off under the control of the remote controller to connect or disconnect the corresponding data transmission line.

[0012] In some possible embodiments, the noise collecting device further comprises a wireless bridge device, and the wireless bridge device comprises a wireless transmitting unit and a wireless receiving unit, and the wireless transmitting unit and the wireless receiving unit are wirelessly connected; the wireless transmitting unit is connected with the sound sensor, and the wireless receiving unit is connected with the remote controller.

[0013] In some possible embodiments, the noise collecting device comprises: a multi-channel data acquisition module having a plurality of second channel interfaces, and each second channel interface is connected with a sound sensor, and the multi-channel data acquisition module is used to acquire sound data from the plurality of sound sensors.

[0014] In a second aspect, the embodiments of the present application provide a noise collection system, comprising: sound sensors, a plurality of sound sensors are arranged at a setting plane perpendicular to a wind turbine, and are arranged at intervals around the wind turbine, two adjacent sound sensors and the wind turbine at the projection of the setting plane form a sector with the projection as the apex, and the sound sensors are used to collect sound data; a noise collection device connected with the sound sensors and the wind turbine, the noise collection device is used to obtain fan state data of the wind turbine and obtain sound data collected by at least one sound sensor, and the obtained sound data comprises sound data collected by the sound sensor in the tail direction of the wind turbine.

[0015] The embodiments of the present application provide a wind power generation system and a noise collection system, the wind power generation system comprises the noise collection system and a wind turbine, the noise collection system comprises a plurality of sound sensors arranged at intervals around the wind turbine, and a noise collection device connected with the wind turbine and the sound sensors. Two adjacent sound sensors and the wind turbine as the apex can form a sector, and correspondingly, each sound sensor can be the midpoint of an arc, so as to obtain a target sector corresponding to the sound data collected by each sound sensor, and the central angle of the target sector is the same as the central angle of the sector formed by the two adjacent sound sensors and the apex. The noise collection device can obtain fan state data comprising yaw angle data of the wind turbine, so as to obtain sound data collected by the sound sensor in the tail direction of the wind turbine. Even in the case of frequent changes in wind direction or at night, the noise collection device can accurately obtain the sound data in the tail direction of the wind turbine, and effective noise data can be obtained without frequent movement of the sound sensor, thereby improving the efficiency of noise data collection. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments of the present application. Those skilled in the art can obtain other drawings according to these drawings without any creative labor.

[0017] Figure 1 The structural schematic diagram of the wind power generation system provided by an embodiment of the present application is shown in the figure;

[0018] Figure 2 The structural schematic diagram of the wind power generation system provided by another embodiment of the present application is shown in the figure;

[0019] Figure 3 The schematic diagram of an example of the noise collection control method provided by an embodiment of the present application is shown in the figure;

[0020] Figure 4 The structural schematic diagram of the wind power generation system provided by another embodiment of the present application is shown in the figure;

[0021] Figure 5 A structure schematic diagram of an example of wireless communication between a remote controller and a sound sensor provided for an embodiment of the present application;

[0022] Figure 6 A structure schematic diagram of a wind power generation system provided for another embodiment of the present application. DETAILED DESCRIPTION

[0023] The features and exemplary embodiments of various aspects of the present application will be described below in detail, in order to make the purposes, technical solutions and advantages of the present application more clear and apparent, the present application will be further described in detail below in combination with the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, but not to limit the present application. The present application can be implemented without some of these specific details by those skilled in the art. The following description of the embodiments is only to provide a better understanding of the present application by showing examples of the present application.

[0024] The wind turbine is affected by airflow during operation, and the friction between the components generated when the wind turbine rotates, the wind turbine will generate a large noise. On the one hand, the noise generated by the wind turbine is closely related to the state of the wind turbine, to some extent, the state of the wind turbine can be understood through the noise of the wind turbine, so it is necessary to collect the noise data of the wind turbine; on the other hand, due to the large noise generated by the wind turbine, it is necessary to control the noise generated by the wind turbine, and it is also necessary to collect the noise data of the wind turbine for noise control research. At present, the noise collecting device can be arranged at the back of the wind turbine, and the noise of the wind turbine can be collected by operating the collecting device. However, the environment near the wind turbine is complex and changeable, in the stage of large wind speed, the wind direction is relatively stable, and the noise of the wind turbine can be collected smoothly; in the stage of small wind speed, such as the stage of 6 meters / second to 9 meters / second, the wind direction is unstable, in order to be able to collect noise meeting the requirements, it is necessary to frequently move the noise collecting device. However, frequent movement of the noise collecting device will have a great adverse effect on the effectiveness of the noise, and even effective noise data cannot be obtained, which reduces the efficiency of noise data collection. In addition, at night, it is difficult to identify the wind direction due to the dark light, and the noise data cannot be collected at night.

[0025] The embodiment of the present application provides a wind power generation system and a noise collection system. The wind power generation system can be used for collecting noise data in various situations and improving the efficiency of noise data collection.

[0026] The first aspect of the present application provides a wind power generation system. Figure 1 The structure diagram of the wind power generation system provided by the embodiment of the present application is shown in the figure. Figure 1 The wind power generation system can include a wind turbine 11, a sound sensor 12 and a noise collection device 13.

[0027] The wind turbine 11 is arranged on a setting plane and is perpendicular to the setting plane. In the case that the wind turbine 11 is arranged on land, the setting plane can include the ground; in the case that the wind turbine 11 is arranged on the sea, the setting plane can include the sea level or the platform surface of the offshore wind power platform. Here, the perpendicularity of the wind turbine 11 to the setting plane does not only mean that the included angle between the wind turbine 11 and the setting plane is 90°, but also includes the case that the included angle between the wind turbine 11 and the setting plane is in the range near 90°, for example, the perpendicularity of the wind turbine 11 to the setting plane can include the case that the included angle between the wind turbine 11 and the setting plane is in [85°, 95°], and is not limited to this.

[0028] The wind power generation system includes a plurality of sound sensors 12. The plurality of sound sensors 12 are arranged on the setting plane and are arranged at intervals around the wind turbine 11. The number of sound sensors 12 can be set according to the environment, demand, experience and the like of the wind power generation system, and is not determined here. The projections of two adjacent sound sensors 12 and the wind turbine 11 on the setting plane form a sector with the projection as the vertex. The sound sensor 12 is used for collecting sound data, and the sound data can represent noise and be used for noise testing. Specifically, each sound sensor 12 can collect sound data when the tail of the wind turbine is located in a target sector. The target sector has the sound sensor 12 as the midpoint of the arc of the sector, and the target sector corresponding to the sound sensor 12 can include one half of each of two sectors with the sound sensor 12 as the vertex. Figure 1 As shown in the figure, the angle of the central angle of the sector with the sound sensor 12 as the vertex is the same as the angle of the central angle a of the target sector with the sound sensor 12 as the center. The plurality of sound sensors 12 can be located in the projection of the wind turbine 11 on the setting plane, and the projection of the wind turbine 11 on the setting plane can be a circle. Figure 1The wind turbine 11 in the target circle 14 is at least part of an arc of a target circle 14 with a center and a first length r as a radius. The first length r can be specifically the sum of the height of the hub distance setting plane of the wind turbine 11 and the radius of the impeller of the wind turbine 11, for example, r = H + R, H is the height of the hub distance setting plane, and R is the radius of the impeller of the wind turbine. In some examples, the plurality of sound sensors 12 can be distributed on the entire target circle 14, which can be uniformly distributed or non-uniformly distributed. The plurality of sound sensors 12 uniformly distributed on the target circle 14 can meet the requirement of sound data of 360° of the wind turbine 11 in the circumferential direction, and appropriate sound data can be collected regardless of the yaw position of the wind turbine 11. As shown in Figure 1 twelve sound sensors 12 can be arranged, and the angle of the central angle a of the center of the corresponding target circle of each sound sensor 12 can be 30°. Similarly, the angle of the central angle of the sector formed by the projection of the adjacent two sound sensors 12 and the wind turbine 11 can be 30°. Figure 1 The central angle of the sector formed by the wind turbine 11 in the target circle 14 is 30°. If each sound sensor 12 is taken as the origin on the arc of the corresponding target sector, the range of the central angle a of the corresponding target sector of the sound sensor 12 is [-15°, 15°], which can meet the accuracy requirement of the collection area of the sound data of the wind turbine. For example, by using the wind power generation system in the embodiment of the present application, only five sound sensors 12 are needed to realize the sound data collection coverage of 150° of the wind turbine 11 in the circumferential direction.

[0029] In other examples, the plurality of sound sensors 12 can be distributed on a certain arc of the target circle 14, and the arc corresponding to the distribution of the plurality of sound sensors 12 can be the direction area where the tail of the wind turbine 11 usually locates. The specific position of the arc where the sound sensors 12 are distributed can be obtained according to the yaw data of the wind turbine 11 in the historical time. The plurality of sound sensors 12 can be uniformly distributed on the arc of the target circle 14 or non-uniformly distributed on the arc of the target circle. For example, Figure 2 The structural schematic diagram of the wind power generation system provided by another embodiment of the present application is shown in Figure 2 The wind power generation system includes nine sound sensors 12, which are arranged on an arc of the target circle 14 and are not distributed on the entire target circle 14, but the nine sound sensors 12 are uniformly distributed on the arc, and the angle of the central angle of the sector with the projection as the vertex formed by the projection of the adjacent two sound sensors 12 and the wind turbine 11 can be 30°. Correspondingly, the angle of the central angle a of the corresponding target sector of each sound sensor 12 is also 30°.

[0030] In some examples, the sound sensor 12 can also be configured with a calibration device, which calibrates the sound sensor 12 before obtaining data from the sound sensor 12, so that the sound data output by the sound sensor 12 is more accurate.

[0031] The noise collection device 13 is connected with the sound sensors 12, each sound sensor 12 corresponds to a data transmission channel, and the sound sensor 12 is connected with the noise collection device 13 through the corresponding data transmission channel. The data transmission channel can be a wired transmission channel or a wireless transmission channel. The noise collection device 13 is connected with the wind turbine 11. The noise collection device 13 can be used to acquire the fan state data of the wind turbine 11 and acquire the sound data collected by at least one sound sensor 12. The fan state data can represent the state of the wind turbine 11, and the fan state data can include yaw angle data, and the fan state data can also include but is not limited to one or more of the wind deviation signal, the wind speed data, the power data, the fan state word and the like. The sound data acquired by the noise collection device 13 includes the sound data collected by the sound sensor located in the tail direction of the wind turbine, and the tail direction is the back of the tail. In some examples, within a certain period of time, the noise collection device 13 can acquire the sound data collected by only one sound sensor 12 located in the tail direction of the wind turbine, that is, one sound sensor 12 located opposite to the tail of the wind turbine is accurately positioned, and the sound data collected by the sound sensor 12 is acquired. For example, the noise collection device 13 can open the data transmission channel between the one sound sensor 12 in the tail direction and acquire the sound data collected by the sound sensor 12 through the data transmission channel. When the wind direction changes and the yaw of the wind turbine 11 causes the tail direction to point to the direction corresponding to another sound sensor 12, the previous data transmission channel is closed, the data transmission channel between the other sound sensor 12 is opened, and the sound data collected by the sound sensor 12 is acquired through the data transmission channel. In other examples, within a certain period of time, the noise collection device 13 can acquire the sound data collected by all sound sensors 12.

[0032] The noise collection device 13 acquires the yaw angle data of the wind turbine 11, and the tail direction of the wind turbine 11 can be determined according to the yaw angle data, and then the sound sensor 12 corresponding to the tail direction of the wind turbine 11 is determined according to the tail direction of the wind turbine 11, the sound data collected by the sound sensor 12 corresponding to the tail direction is acquired, and the acquired sound data is used for noise testing. For example, when the wind direction is unstable, the tail of the wind turbine is yawed to the area ① shown in the figure, to the area ② shown in the figure, and to the area ③ shown in the figure. Figure 1 Figure 1 ​In the case of the shown region ②, the noise collection device 13 can acquire sound data from the sound sensor 12 corresponding to region ①, and switch to acquire sound data from the sound sensor 12 corresponding to region ②. The noise collection device 13 can acquire wind speed data, power data, etc. at the same time of acquiring sound data, so as to facilitate the statistics of the data amount of sound data in different wind speed segments and the data amount of sound data in different power segments, avoid a large amount of manual statistics of data amount, and intuitively obtain the process of sound data collection.

[0033] In some examples, the noise collection device 13 can also control the start and stop of the wind turbine. The sound data required for noise testing can include sound data of the wind turbine 11 in the working state and sound data of the wind turbine 11 in the shutdown state. The sound data of the wind turbine 11 in the working state can represent the noise of the wind turbine 11 in the working state, and the sound data of the wind turbine 11 in the shutdown state can represent the background noise. The wind turbine 11 can be controlled to be in the working state for the first 30 minutes in an acquisition cycle of one hour, and the sound data collected by the sound sensor 12 can be acquired. The wind turbine 11 can be controlled to be in the shutdown state for the last 30 minutes, and the sound data collected by the sound sensor 12 can be acquired.

[0034] In the embodiment of the present application, the wind power generation system includes the wind turbine 11, a plurality of sound sensors 12 arranged at intervals around the wind turbine 11, and a noise collection device 13 connected with the wind turbine 11 and the sound sensors 12. Adjacent two sound sensors 12 and the wind turbine 11 as the vertex can form a sector. Correspondingly, each sound sensor 12 can be the midpoint of the arc, and the target sector corresponding to the sound data collected by each sound sensor 12 can be obtained. The angle of the central angle of the target sector is the same as the angle of the central angle of the sector formed by the adjacent two sound sensors 12 and the vertex. The noise collection device 13 can acquire wind turbine state data including yaw angle data of the wind turbine 11, so as to acquire sound data collected by the sound sensor 12 located in the tail direction of the wind turbine 11. Even in the case of frequent changes in wind direction or night state, the noise collection device 13 can accurately acquire sound data located in the tail direction of the wind turbine 11, without frequent movement of the sound sensor 12, so as to obtain effective noise data and improve the efficiency of noise data collection.

[0035] Through practice, the wind power generation system in the embodiment of the present application can reduce the time spent on noise testing from 9 days to 3 days, and greatly reduce the manual participation, further reduce the time cost and labor cost.

[0036] To facilitate determination of the sound sensor 12 corresponding to the required sound data, a relationship between each sound sensor 12 and the working angle range can be established in advance, the target circle 14 in the above embodiment can be divided into a plurality of working angle ranges with the same number as that of the sound sensors 12, and the sound sensors 12 can be associated with the working angle ranges one by one. For example, as shown in FIG. 9, the wind power system can include twelve sound sensors 12 numbered #1 to #12, the unit of the working angle range is °, the yaw angle data of the wind turbine generator 11 generally represents ±540°, the sound collection position of the wind turbine generator can be determined according to the yaw angle data of the wind turbine generator 11, the working angle range to which the sound collection position belongs can be determined, and the sound sensor 12 corresponding to the working angle range can be determined. Figure 1 The sound collection position can be calculated according to the following formula (1):

[0037] θ = mod(β-mod(β0)) (1)

[0038] Wherein, θ is the sound collection position; mod is the modulo operation; β is the yaw angle represented by the yaw angle data of the wind turbine generator 11 at the current time; β0 is the yaw angle represented by the initial yaw angle data of the wind turbine generator 11, and the initial yaw angle data can represent the yaw angle corresponding to the working angle range including 0°, for example, the initial yaw angle data can represent the yaw angle data corresponding to the working angle range of the sound sensor 12 numbered #1. The relationship between the sound sensor 12 and the working angle range can be shown in Table 1:

[0039] Table 1

[0040]

[0041] The wind power system can be controlled according to the following noise collection control method. The sound collection position, i.e., the angle under the coordinates formed by the sound sensors, can be converted according to the yaw angle data of the wind turbine generator at the current time and the initial yaw angle data; the working angle range to which the sound collection position belongs can be determined, the data transmission channel corresponding to the working angle range to which the sound collection position belongs can be opened, and the sound data collected by the sound sensor corresponding to the working angle range can be obtained. Figure 3 An example of the noise collection control method provided by the embodiment of the present application is shown in the schematic diagram, taking the relationship between the sound sensor 12 and the working angle range shown in Table 1 as an example, the unit of the working angle range in Table 1 is °, as shown in FIG. 10, the noise collection control method can include steps b1 to b39. Figure 3

[0042] In step b1, the yaw angle data and the initial yaw angle data of the wind turbine generator are obtained.

[0043] ​In step b2, the sound collection position is obtained according to the yaw angle data and the initial yaw angle data.

[0044] In step b3, it is judged whether the sound collection position is within [345, 360) U [0, 15); if yes, step b4 is executed; if not, step b6 is executed.

[0045] In step b4, the data transmission channel between the sound sensor #1 is opened, and other data transmission channels are closed.

[0046] In step b5, prompt information that the sound sensor #1 starts to collect is displayed.

[0047] In step b6, it is judged whether the sound collection position is within [15, 45); if yes, step b7 is executed; if not, step b9 is executed.

[0048] In step b7, the data transmission channel between the sound sensor #2 is opened, and other data transmission channels are closed.

[0049] In step b8, prompt information that the sound sensor #2 starts to collect is displayed.

[0050] In step b9, it is judged whether the sound collection position is within [45, 75); if yes, step b10 is executed; if not, step b12 is executed.

[0051] In step b10, the data transmission channel between the sound sensor #3 is opened, and other data transmission channels are closed.

[0052] In step b11, prompt information that the sound sensor #3 starts to collect is displayed.

[0053] Figure 3 Steps b12 to b35 are omitted, and steps b12 to b35 are to judge whether the sound collection position belongs to the working angle range corresponding to the sound sensor #4 to the working angle range corresponding to the sound sensor #11, and the specific content is similar to steps b3 to b5, which can be referred to in the foregoing, and will not be described here.

[0054] In step b36, it is judged whether the sound collection position is within [315, 345); if yes, step b37 is executed; if not, step b39 is executed.

[0055] In step b37, the data transmission channel between the sound sensor #12 is opened, and other data transmission channels are closed.

[0056] In step b38, prompt information that the sound sensor #12 starts to collect is displayed.

[0057] In step b39, fault prompt information is issued.

[0058] In some embodiments, the wind power generation system can further include a ring-shaped slide rail and a plurality of bases. The ring-shaped slide rail is arranged in the projection center of the setting plane, and the ring-shaped slide rail can be arranged in the position of the target circle 14 of Figure 1 and Figure 2 . The bases are in sliding connection with the ring-shaped slide rail, and the bases are provided with a clamping structure for fixing the bases at the target positions of the ring-shaped slide rail, and the sound sensors 12 are detachably connected with the bases. The sound sensors 12 can be installed on the bases, and the target positions of the bases are consistent with the positions of the sound sensors 12 shown in Figure 1 and Figure 2 , that is, each target position corresponds to a sound sensor 12, and the adjacent two bases and the wind turbine generator 11 form a sector with the projection as the apex in the projection of the setting plane. Through the ring-shaped slide rail and the bases, the sound sensors 12 can be arranged more accurately and more conveniently.

[0059] In some embodiments, the noise collecting device can adopt a single-channel data collecting module. Figure 4 The structure schematic diagram of the wind power generation system provided by another embodiment of the present application is shown in Figure 4 . The noise collecting device 13 can include a remote controller 131, a single-channel data collecting module 132, and a fan test controller 133.

[0060] The remote controller 131 is connected with the sound sensors 12. Each data transmission channel is provided between the remote controller 131 and each sound sensor 12. The sound data collected by the sound sensors 12 is transmitted to the remote controller 131 through the corresponding data transmission channel. The remote controller 131 can control the opening and closing of each data transmission channel, so as to select the sound data from which sound sensor 12. The plurality of sound sensors 12 can be in the power-on state, but at the same time, only one sound sensor 12 collects sound data, and the other sound sensors 12 do not collect sound data.

[0061] In some examples, the remote controller 131 can be in wired connection with the sound sensors 12. The remote controller 131 has a plurality of first channel access ports, and the first channel access ports are connected with the sound sensors 12 one by one through the connection signal lines, that is, the data connection lines correspond to the sound sensors 12 one by one, and the data connection lines correspond to the first channel access ports one by one. The data transmission channel in the above embodiment can be realized through the connection signal lines. The data transmission line formed by the first channel access port, the connection signal line, and the sound sensor can be provided with a switch unit, and the switch unit is turned on or turned off under the control of the remote controller 131, so as to connect or disconnect the corresponding data transmission line. Through the control of the switch unit, the switching of the data transmission channel for acquiring sound data under the condition of change of wind direction can be realized.

[0062] In other examples, the remote controller 131 may be wirelessly connected to the sound sensor 12. The noise acquisition device 13 may also include a wireless bridge device. Figure 5 A schematic diagram illustrating an example of wireless communication between a remote controller and a sound sensor provided in an embodiment of this application is shown below. Figure 5 As shown, the wireless bridge device 15 includes a wireless transmitting unit 151 and a wireless receiving unit 152, which are wirelessly connected. The wireless transmitting unit 151 is connected to the sound sensor 12, and the wireless receiving unit 152 is connected to the remote controller 131. The connection between the wireless transmitting unit 151 and the sound sensor 12 can be wired, and the connection between the wireless receiving unit 152 and the remote controller 131 can also be wired. A power supply 21 supplies power to the sound sensor 12 and the wireless transmitting unit 151, and a power supply 22 supplies power to the wireless receiving unit 152. The wireless transmitting unit 151 can transmit the sound data collected by the sound sensor 12 to the wireless receiving unit 152 wirelessly. The wireless receiving unit 152 transmits the received sound data to the remote controller 131, and the remote controller 131 then transmits the sound data to the single-channel data acquisition module 132.

[0063] The single-channel data acquisition module 132 is connected to the remote controller 131. The single-channel data acquisition module 132 is used to acquire audio data transmitted from one data transmission channel of the remote controller 131. The single-channel data acquisition module 132 can only acquire audio data transmitted from one data transmission channel of the remote controller 131 at a time. This single-channel data acquisition setting makes the single-channel data acquisition module 132 relatively small in size and lower in cost, and also reduces the workload of subsequent data processing.

[0064] The wind turbine test controller 133 is connected with the wind turbine 11 and the remote controller 131. The wind turbine test controller 133 can be used to acquire wind turbine state data from the wind turbine 11 and transmit the wind turbine state data to the remote controller 131. The yaw angle data acquired by the wind turbine test controller 133 corresponds to the position of the sound sensor for collecting sound data of the remote controller 131. The remote controller 131 can determine the sound collection position of the wind turbine 11 according to the yaw angle data acquired by the wind turbine test controller 133, determine the working angle range according to the sound collection position, and further determine the sound sensor 12 corresponding to the working angle range. In some examples, the wind turbine test controller 133 can also determine whether the acquired wind turbine state data is valid, for example, whether the wind turbine state data is valid can be determined according to the wind turbine state data; if the wind turbine state data is valid, the wind turbine test controller 133 sends a valid state word to the remote controller 131, such as sending a valid state word "1", indicating that the remote controller 131 normally acquires sound data; if the wind turbine state data is invalid, the wind turbine test controller 133 sends an invalid state word to the remote controller 131, such as sending an invalid state word "0", indicating that the remote controller 131 closes the data transmission channel, stops data acquisition, and controls the single-channel data acquisition module 132 to stop data acquisition.

[0065] In some examples, the remote controller 131 can include a signal receiver, a processor, a switching switch module and a signal output module. The signal receiver can receive the wind turbine state data transmitted by the wind turbine test controller 133 and transmit the wind turbine state data to the processor. The processor can determine the sound collection position according to the wind turbine state data, and determine the working angle range to which the sound collection position belongs, and further obtain the sound sensor 12 corresponding to the working angle range. The switching switch module opens the data transmission channel of the sound sensor 12 corresponding to the working angle range under the control of the processor. The signal receiver can receive the sound data transmitted by the data transmission channel and transmit the sound data to the signal output module. The signal output module transmits the sound data to the single-channel data acquisition module 132.

[0066] In some examples, the single-channel data acquisition module 132 can include a signal receiver, a self-calibration instrument and a noise data acquisition device. The noise data acquisition device can acquire and store sound data from the remote controller 131. The self-calibration instrument can calibrate the sound data. The signal receiver can receive instructions from the remote controller to control the self-calibration instrument to execute the calibration program.

[0067] In some embodiments, the noise acquisition device can use a multi-channel data acquisition module. Figure 6 The structure schematic diagram of the wind power generation system provided by another embodiment of the present application is shown in FIG. 6. Figure 6As shown, the noise collection device 13 can include a multi-channel data collection module 134; in some examples, in the case where the noise collection device 13 includes the multi-channel data collection module 134, the noise collection device 13 can also include a fan state collection module 135.

[0068] The multi-channel data collection module 134 has a plurality of second channel interfaces. The second channel interfaces are connected to the sound sensors 12 one by one. The second channel interfaces can be connected to the sound sensors 12 through signal connection lines, and the data transmission channels can be implemented through the signal connection lines between the second channel interfaces and the sound sensors 12. The multi-channel data collection module 134 can be used to acquire sound data from the plurality of sound sensors 12, and the sound data can be transmitted from the sound sensors 12 to the multi-channel data collection module 134 through the signal connection lines. The multi-channel data collection module 134 can simultaneously acquire sound data transmitted from the plurality of data transmission channels, and store the sound data according to the different data transmission channels. In some examples, at the same time, the plurality of sound sensors 12 can all collect sound data and transmit the sound data to the multi-channel data collection module 134.

[0069] The fan state collection module 135 is connected to the wind turbine generator 11 and can be used to acquire fan state data. The fan state collection module 135 can control the start and stop of the wind turbine generator 11 to facilitate noise detection.

[0070] In the case where the noise collection device 13 includes the multi-channel data collection module 134, the multi-channel data collection module 134 does not need to acquire the yaw angle data. In subsequent data processing, the multi-channel data collection module 134 can upload the multi-path sound data transmitted from the plurality of data transmission channels to an online data processing system, and the fan state collection module 135 can upload the acquired fan state data to the online data processing. The online data processing system can filter the multi-path sound data according to the yaw angle data in the fan state data, and filter the sound data collected by the sound sensors in the tail direction of the wind turbine generator to perform noise testing. The online data processing system determines the sound data collected by the sound sensors in the tail direction of the wind turbine generator according to the yaw angle data, which can be referred to the related description of the remote controller 131 determining the acquired sound data above, and will not be described here.

[0071] The second aspect of the present application provides a noise collection system. The noise collection system can include the sound sensors 12 and the noise collection device 13 in the above-described embodiments.

[0072] The plurality of sound sensors 12 are located in a setting plane perpendicular to the wind turbine generator 11 and are arranged at intervals around the wind turbine generator 11. Two adjacent sound sensors 12 and the wind turbine generator 11 form a sector with the projection as the apex in the setting plane. The sound sensors 12 are used to collect sound data.

[0073] The noise collection device 13 is connected with the sound sensor 12 and the wind turbine 11, and is configured to acquire the fan state data of the wind turbine 11 and acquire sound data collected by at least one sound sensor 12, wherein the sound data includes sound data collected by the sound sensor 12 located in the direction of the tail of the wind turbine 11.

[0074] The specific content of the sound sensor 12 and the noise collection device 13 can refer to the related description in the above embodiments, and will not be repeated here.

[0075] In some embodiments, the noise collection system can further include a ring-shaped sliding rail and a plurality of bases, and the specific content of the ring-shaped sliding rail and the bases can refer to the related description in the above embodiments, and will not be repeated here.

[0076] It should be clear that each of the embodiments in the specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other. Each embodiment focuses on the difference from other embodiments. The present application is not limited to the specific structures described above and shown in the drawings. Those skilled in the art can make various changes, modifications and additions after understanding the spirit of the present application. And, for the sake of brevity, detailed description of known structural techniques is omitted here.

[0077] Those skilled in the art should understand that the above embodiments are exemplary but not limiting. Different technical features appearing in different embodiments can be combined to achieve beneficial effects. Those skilled in the art can understand and implement other changed embodiments of the disclosed embodiments based on the drawings, the specification and the claims. In the claims, the term "comprising" does not exclude other devices; the quantifier "one" does not exclude multiple; the terms "first", "second" are used to mark names rather than to represent any specific order. Any reference signs in the claims should not be understood as limiting the scope of protection. The fact that certain technical features appear in different dependent claims does not mean that these technical features cannot be combined to achieve beneficial effects.

Claims

1. A wind power generation system characterized by comprising: The wind turbine is arranged on a setting plane and is perpendicular to the setting plane. A plurality of sound sensors are arranged on the setting plane and are arranged at intervals around the wind turbine. Two adjacent sound sensors and the projection of the wind turbine on the setting plane form a sector with the projection as the apex. The sound sensors are used to collect sound data. A noise collection device is connected to the sound sensors and the wind turbine. The noise collection device is used to obtain fan state data of the wind turbine and obtain sound data collected by at least one sound sensor. The obtained sound data includes sound data collected by the sound sensor in the direction of the tail of the wind turbine. The fan state data includes yaw angle data. The plurality of sound sensors are located on at least a part of an arc of a target circle with the projection as the center and a first length as the radius.

2. The wind power generation system according to claim 1, characterized by, 3. The wind power generation system according to claim 2, wherein The plurality of sound sensors are uniformly distributed on the target circle. The first length is the sum of the height of the hub of the wind turbine from the setting plane and the radius of the impeller of the wind turbine. The central angle of the sector formed by the two adjacent sound sensors and the projection is 30°.

4. The wind power generation system according to claim 1, characterized by Further comprising:

5. The wind power generation system according to claim 1, characterized by A ring-shaped sliding rail arranged on the setting plane with the projection as the center; A plurality of bases are slidingly connected to the ring-shaped sliding rail. The bases are provided with a clamping structure for fixing the bases at a target position of the ring-shaped sliding rail. The sound sensors are detachably connected to the bases. The noise collection device comprises:

6. The wind power generation system according to claim 1, characterized by A remote controller connected to the sound sensors. Each sound sensor has a data transmission channel with the remote controller. The sound data collected by the sound sensor is transmitted to the remote controller through the corresponding data transmission channel. A single-channel data collection module connected to the remote controller for obtaining sound data transmitted from one data transmission channel of the remote controller. A fan test controller connected to the wind turbine and the remote controller for obtaining the fan state data from the wind turbine and transmitting the fan state data to the remote controller. The yaw angle data corresponds to the position of the sound sensor that collects the sound data.

7. The wind power generation system according to claim 6, wherein The remote controller has a plurality of first channel access ports. The first channel access ports are connected to the sound sensors one by one through connection signal lines. Switching units are arranged on the data transmission lines formed by the first channel access ports, the connection signal lines and the sound sensors. The switching units are turned on or turned off under the control of the remote controller to connect or disconnect the corresponding data transmission lines. The noise collection device further comprises a wireless network bridge device. The wireless network bridge device comprises a wireless transmitting unit and a wireless receiving unit. The wireless transmitting unit and the wireless receiving unit are wirelessly connected.

8. The wind power generation system according to claim 6, characterized by ​ The wireless transmitting unit is connected with the sound sensor, and the wireless receiving unit is connected with the remote controller.

9. The wind power generation system according to claim 1, characterized by The noise collection device comprises: The multi-channel data collection module has a plurality of second channel interfaces, the second channel interfaces are connected with the sound sensors one by one, and the multi-channel data collection module is used for acquiring sound data from the plurality of sound sensors.

10. A noise acquisition system, characterized by Comprise: The sound sensors are located in a setting plane perpendicular to the wind turbine, are arranged at intervals around the wind turbine, and form a sector with the projection of the wind turbine on the setting plane as an apex with any two adjacent sound sensors. The noise collection device is connected with the sound sensors and the wind turbine, is used for acquiring fan state data of the wind turbine and acquiring sound data collected by at least one sound sensor, and the acquired sound data comprises sound data collected by the sound sensor in the direction of the tail of the wind turbine.

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