CN117969889A - Wind direction anemometer detection method and system - Google Patents

Abstract

The invention relates to the technical field of anemometer detection, in particular to a method and a system for detecting an anemometer, wherein the method for detecting the anemometer is used for detecting the anemometer to be detected on site, and comprises the following steps: acquiring an actual measured wind speed value, a standard wind speed value, an actual measured wind direction angle value, a standard wind direction angle value, an average wind speed deviation value and an average wind direction angle deviation value of a position where the wind driven generator is located in real time; judging whether the variation trend of the measured wind speed value is the same as that of the standard wind speed value, whether the variation trend of the measured wind direction angle value is the same as that of the standard wind direction angle value, and whether the average wind speed deviation value and the average wind direction angle deviation value meet error judgment conditions, if so, the wind direction anemometer is normal, and if not, the wind direction anemometer is abnormal. According to the method, the anemograph does not need to be disassembled, so that manpower and material resources are saved, the wind generating set does not need to be stopped in the detection process, and the power generation task progress of the wind generating set is not affected.

Description

Wind direction anemometer detection method and system

Technical Field

The invention relates to the technical field of anemometer detection, in particular to a method and a system for detecting a wind direction and a wind speed.

Background

In recent years, with the development of new energy supported by China, the wind power reserve market is increased year by year, one wind power generation field is few, tens of wind power generators are provided, and hundreds of wind power generators are provided, each wind power generator is provided with at least one anemometer, the wind power generator set performs yaw operation according to wind direction measured by the anemometer, and the wind power generator set is controlled to start and stop according to wind speed measured by the anemometer, so that the power generation efficiency is adjusted. In reality, the method for effectively detecting the anemometer of the wind driven generator is generally to detach the anemometer and send the anemometer to a professional laboratory for detection. During the period of detection, the wind generating set needs to be shut down, or the anemometer spare parts are replaced, because the anemometer spare parts are limited, and the wind generating field has power generation tasks each year, the random shut down can influence the progress of the power generation tasks, so that a large number of wind generating sets never detect the anemometer unless staff obviously feel that the anemometer is abnormal or the power generation capacity of the wind generating set obviously decreases from the date of production.

Disclosure of Invention

In view of the above, the invention aims to provide a method and a system for detecting an anemometer, which are used for solving the problem that in the prior art, the wind generator set is required to stop for detecting the anemometer, so that the progress of a power generation task is influenced.

In a first aspect, an embodiment of the present invention provides a method for detecting an anemometer, configured to perform on-site detection on an anemometer to be detected, where the anemometer is fixed at a first preset position at a nacelle top of the wind turbine; the handheld weather station is fixed at a second preset position, and the handheld weather station and the wind direction anemometer are ensured to be kept on the same axis; the initial position direction of the handheld weather station is the north pole direction, and the method comprises the following steps:

Acquiring an actual measured wind speed value, a standard wind speed value, an actual measured wind direction angle value, a standard wind direction angle value, an average wind speed deviation value and an average wind direction angle deviation value of the position of the wind driven generator in real time;

judging whether the variation trend of the actually measured wind speed value is the same as that of the standard wind speed value, whether the variation trend of the actually measured wind direction angle value is the same as that of the standard wind direction angle value, and whether the average wind speed deviation value and the average wind direction angle deviation value meet error judgment conditions, if so, the anemograph is normal, and if not, the anemograph is abnormal.

Preferably, the error determination condition includes:

The average wind speed deviation value is less than an upper limit average wind speed deviation value, and the average wind direction angle deviation value is less than an upper limit average wind direction angle deviation value.

Preferably, the calculation formula of the average wind speed deviation value is:

Wherein e ₁ is the average wind speed deviation value, For the measured wind speed average value,/>Is the standard wind speed average value;

the calculation formula of the average wind direction angle deviation value is as follows:

wherein e ₂ is the average wind direction angle deviation value, For the measured wind direction angle average value,/>Is the standard wind direction angle average value.

Preferably, the calculation formula of the measured wind speed average value is:

Wherein, For the measured wind speed average value,/>For the measured average value of the wind speed in the north and south directions,/>The measured east-west wind speed average value;

The calculation formula of the standard wind speed average value is as follows:

Wherein, For the standard wind speed average,/>Is the average value of the standard north-south wind speed,/>Is the standard east-west wind speed average.

Preferably, the calculation formula of the measured wind direction angle average value is:

Wherein, For the measured wind direction angle average value,/>For the measured north-south wind speed average value,/>The measured east-west wind speed average value is;

the calculation formula of the standard wind direction angle average value is as follows:

Wherein, For the standard wind direction angle average value,/>For the standard north-south wind speed average value,/>Is the standard east-west wind speed average value.

Preferably, the calculation formula of the measured average value of the north-south wind speed is as follows:

Wherein, X _{Measuring i} is the measured north-south wind speed value, and n is the sampling times;

The calculation formula of the measured east-west wind speed average value is as follows:

Wherein, Y _{Measuring i} is the measured east-west wind speed value, and n is the sampling times;

the calculation formula of the standard north-south wind speed average value is as follows:

Wherein, X _{Label (C) i} is the standard north-south wind speed value, and n is the sampling frequency;

The calculation formula of the standard east-west wind speed average value is as follows:

Wherein, And y _{Label (C) i} is the standard east-west wind speed value, and n is the sampling frequency.

Preferably, the calculation formula of the measured north-south wind speed value is as follows:

x _{Measuring i}＝v _{Measuring i}*sinθ _{Measuring i}；

Wherein x _{Measuring i} is the measured north-south wind speed value, v _{Measuring i} is the measured wind speed value, and θ _{Measuring i} is the measured wind direction angle;

The calculation formula of the actually measured east-west wind speed value is as follows:

y _{Measuring i}＝v _{Measuring i}*sinθ _{Measuring i}；

Wherein y _{Measuring i} is the measured east-west wind speed value, v _{Measuring i} is the measured wind speed value, and θ _{Measuring i} is the measured wind direction angle value;

The calculation formula of the standard north-south wind speed value is as follows:

x _{Label (C) i}＝v _{Label (C) i}*cosθ _{Label (C) i}；

Wherein x _{Label (C) i} is the standard north-south wind speed value, v _{Label (C) i} is the standard wind speed value, and θ _{Label (C) i} is the standard wind direction angle value;

the standard east-west wind speed value has the following calculation formula:

y _{Label (C) i}＝v _{Label (C) i}*cosθ _{Label (C) i}；

Wherein y _{Label (C) i} is the standard east-west wind speed value, v _{Label (C) i} is the standard wind speed value, and θ _{Label (C) i} is the standard wind direction angle value.

Preferably, the signal output end of the handheld weather station and the signal output end of the anemometer are connected with the signal input end of the signal acquisition equipment together;

the signal acquisition equipment is communicated with the upper computer through Bluetooth;

And judging the measured wind speed value, the standard wind speed value, the measured wind direction angle value, the standard wind direction angle value, the average wind speed deviation value and the average wind direction angle deviation value through the upper computer.

The anemometer detection method provided by the embodiment of the invention has the following beneficial effects:

The embodiment of the invention provides a method for detecting an anemometer, which comprises the steps of firstly obtaining an actually measured wind speed value, a standard wind speed value, an actually measured wind direction angle value, a standard wind direction angle value, an average wind speed deviation value and an average wind direction angle deviation value in real time, and judging whether the anemometer is abnormal by judging whether the change trend of the actually measured wind speed value and the standard wind speed value is the same, whether the change trend of the actually measured wind direction angle value and the standard wind direction angle value is the same, and whether the average wind speed deviation value and the average wind direction angle deviation value meet error judgment conditions. The method is rapid and convenient in detection mode, does not need to detach the wind direction anemograph, saves manpower and material resources, does not need to stop the wind generating set in the detection process, and does not influence the power generation task progress of the wind generating set.

In a second aspect, an embodiment of the present invention further provides an anemometer detection system, which is applied to the anemometer detection method, where the system includes:

the acquisition module is used for acquiring an actual measured wind speed value, a standard wind speed value, an actual measured wind direction angle value, a standard wind direction angle value, an average wind speed deviation value and an average wind direction angle deviation value of the position where the wind driven generator is located in real time;

The judging module is used for judging whether the change trend of the actually measured wind speed value is the same as that of the standard wind speed value, whether the change trend of the actually measured wind direction angle value is the same as that of the standard wind direction angle value, and whether the average wind speed deviation value and the average wind direction angle deviation value meet error judging conditions, if so, the anemometer is normal, and if not, the anemometer is abnormal.

The anemometer detection system adopts the anemometer detection method, so that the anemometer detection system has the beneficial effects of the anemometer detection method and is not repeated herein.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic flow chart of a method for detecting an anemometer according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of an anemometer detection system according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an information collecting device according to an embodiment of the present invention.

Icon: 100-anemometer; 200-top of the nacelle of the wind power generator; 300-information acquisition equipment; 400-a handheld weather station; 500-a retractable stand; 600-upper computer

301-A processor module; 302-a Bluetooth communication module; 501-sleeve; 502-screw.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In order to facilitate understanding of the present embodiment, the following describes embodiments of the present invention in detail.

The embodiment of the invention provides a method for detecting an anemometer, which is used for detecting the anemometer to be detected on site, wherein the anemometer is fixed at a first preset position at the top of a cabin of a wind driven generator; the handheld weather station is fixed at a second preset position, so that the handheld weather station and the wind direction anemometer are kept on the same axis; wherein, the initial position direction of the handheld weather station is the north pole direction, as shown in fig. 1, the method comprises the following steps:

s102, acquiring an actual measured wind speed value, a standard wind speed value, an actual measured wind direction angle value, a standard wind direction angle value, an average wind speed deviation value and an average wind direction angle deviation value of a position where a wind driven generator is located in real time;

S104, judging whether the variation trend of the actually measured wind speed value is the same as that of the standard wind speed value, whether the variation trend of the actually measured wind direction angle value is the same as that of the standard wind direction angle value, and whether the average wind speed deviation value and the average wind direction angle deviation value meet error judgment conditions, if so, the wind direction anemometer is normal, and if not, the wind direction anemometer is abnormal.

In the embodiment of the invention, an actually measured wind speed value, a standard wind speed value, an actually measured wind direction angle value, a standard wind direction angle value, an average wind speed deviation value and an average wind direction angle deviation value are firstly obtained in real time, and then whether the anemometer is abnormal is judged by judging whether the variation trend of the actually measured wind speed value and the standard wind speed value is the same, whether the variation trend of the actually measured wind direction angle value and the standard wind direction angle value is the same, and whether the average wind speed deviation value and the average wind direction angle deviation value meet error judgment conditions. The standard wind speed value and the standard wind direction angle value are obtained through the handheld weather station, the measured wind speed value and the measured wind direction angle value are obtained through the wind anemometer to be measured, the handheld weather station used in the method is flexible and small, is convenient to carry aloft and easy to operate, and is used for carrying out data acquisition with the wind anemometer to be measured at the same time, so that measurement errors caused by different time are eliminated. Compared with the prior art, the method does not need to disassemble the anemograph, saves manpower and material resources, does not need to stop the wind generating set in the detection process, does not influence the progress of the power generation task of the wind generating set, can analyze and judge on the spot according to the acquired reliable data after the detection is finished, and obtain a judging result, and the judging result can judge whether the anemograph installed on the wind generating set fails or whether the detection precision is reduced or not, so that the yaw of the wind generating set can be guided, the judging capability of the accuracy and the reliability of the wind direction and the wind speed of a worker is improved, the method has important significance for improving the yaw precision of the wind generating set, improving the power generation efficiency of the wind generating set and reducing the load of the wind generating set, provides a basis for the follow-up selection and continuous use or replacement of the anemograph of the wind generating set, facilitates the follow-up work planning arrangement of the wind generating set, and provides guarantee for the follow-up power generation work of the wind generating set.

Specifically, in the step S104, the error determination conditions include:

The average wind speed deviation value is less than the upper limit average wind speed deviation value, and the average wind direction angle deviation value is less than the upper limit average wind direction angle deviation value.

Specifically, in the error determination condition, the calculation formula of the average wind speed deviation value is as follows:

Wherein e ₁ is the average wind speed deviation value, For the measured wind speed average value,/>Is the standard wind speed average value;

the calculation formula of the average wind direction angle deviation value is as follows:

wherein e ₂ is the average wind direction angle deviation value, For the measured wind direction angle average value,/>Is the standard wind direction angle average value.

The average wind speed deviation value in the step is the difference between the measured wind speed average value and the standard wind speed average value, and the average wind direction angle deviation value is the difference between the measured wind direction angle average value and the standard wind direction angle average value.

Specifically, the calculation formula of the measured wind speed average value is as follows:

Wherein, For the measured wind speed average value,/>For the measured average value of the wind speed in the north and south directions,/>The measured east-west wind speed average value;

The calculation formula of the standard wind speed average value is as follows:

Wherein, Is the standard wind speed average value,/>Is the average value of the standard north-south wind speed,/>Is the standard east-west wind speed average.

The measured wind speed average value in the step is the combined speed of the measured north-south wind speed average value and the measured east-west wind speed average value; the standard wind speed average value is the sum speed of the standard north-south wind speed average value and the standard east-west wind speed average value.

Specifically, the calculation formula of the measured wind direction angle average value is as follows:

Wherein, For the measured wind direction angle average value,/>For the measured average value of the wind speed in the north and south directions,/>The measured east-west wind speed average value;

the calculation formula of the standard wind direction angle average value is as follows:

Wherein, Is the average value of the angle of the standard wind direction,/>Is the average value of the standard north-south wind speed,/>Is the standard east-west wind speed average.

Specifically, the calculation formula of the measured average value of the north-south wind speed is as follows:

Wherein, X _{Measuring i} is the measured north-south wind speed value, and n is the sampling times;

the calculation formula of the measured east-west wind speed average value is as follows:

Wherein, Y _{Measuring i} is the measured east-west wind speed value, n is the sampling frequency;

the calculation formula of the standard north-south wind speed average value is as follows:

Wherein, The wind speed is a standard north-south wind speed average value, x _{Label (C) i} is a standard north-south wind speed value, and n is sampling times;

The calculation formula of the standard east-west wind speed average value is as follows:

Wherein, And y _{Label (C) i} is a standard east-west wind speed average value, y _{Label (C) i} is a standard east-west wind speed value, and n is the sampling frequency.

Specifically, the calculation formula of the measured north-south wind speed value is as follows:

x _{Measuring i}＝v _{Measuring i}*sinθ _{Measuring i}；

Wherein x _{Measuring i} is the measured north-south wind speed value, v _{Measuring i} is the measured wind speed value, and θ _{Measuring i} is the measured wind direction angle;

The calculation formula of the actually measured east-west wind speed value is as follows:

y _{Measuring i}＝v _{Measuring i}*sinθ _{Measuring i}；

Wherein y _{Measuring i} is the measured east-west wind speed value, v _{Measuring i} is the measured wind speed value, and θ _{Measuring i} is the measured wind direction angle value;

The calculation formula of the standard north-south wind speed value is as follows:

x _{Label (C) i}＝v _{Label (C) i}*cosθ _{Label (C) i}；

Wherein x _{Label (C) i} is a standard north-south wind speed value, v _{Label (C) i} is a standard wind speed value, and θ _{Label (C) i} is a standard wind direction angle value;

the calculation formula of the standard east-west wind speed value is as follows:

y _{Label (C) i}＝v _{Label (C) i}*cosθ _{Label (C) i}；

wherein y _{Label (C) i} is a standard east-west wind speed value, v _{Label (C) i} is a standard wind speed value, and θ _{Label (C) i} is a standard wind direction angle value.

Therefore, the measured north-south wind speed value, the measured east-west wind speed value, the standard north-south wind speed value and the standard east-west wind speed value in the step are all wind speed vectors, the size of the air outlet can be represented, the direction of the air outlet can be represented, and the method enables the representation of the wind speed value to be more comprehensive.

In the embodiment of the invention, the signal output end of the handheld weather station and the signal output end of the anemoscope are commonly connected with the signal input end of the signal acquisition equipment; the signal acquisition equipment is communicated with the upper computer through Bluetooth; and judging the measured wind speed value, the standard wind speed value, the measured wind direction angle value, the standard wind direction angle value, the average wind speed deviation value and the average wind direction angle deviation value through the upper computer.

Therefore, the signal acquisition equipment can jointly transmit the data acquired by the handheld weather station and the data acquired by the anemoscope to be measured to the upper computer, and the upper computer can judge whether the anemoscope to be measured is abnormal according to the data. In the method, the signal acquisition equipment performs data transmission with the upper computer in a Bluetooth mode, so that the upper computer can acquire data from the handheld weather station and the wind direction anemometer to be detected at the same time, and the data transmission is convenient and efficient.

In order to further explain the method for detecting the wind direction and the anemometer provided by the embodiment of the invention, the following specific examples are listed for more detailed description, and the steps of the method are as follows:

A1, as shown in FIG. 2, the anemometer 100 to be measured is installed on the top 200 of the wind turbine nacelle and is electrically connected with the information acquisition device 300, the handheld weather station 400 is installed in a sleeve 501 of a telescopic bracket 500 and is fixed with the sleeve 501 through a screw 502, the sleeve 501 is connected with the telescopic bracket 500 through the screw 502, the telescopic bracket 500 is fixed on the top 200 of the wind turbine nacelle, the distance between the handheld weather station 400 and the anemometer 100 is ensured to be about 1m, the top of the handheld weather station 400 and the anemometer 100 are ensured to be at the same height, and the initial position (0 DEG position) of the handheld weather station 400 is ensured to point to the north pole (N pole) direction;

a2, starting the handheld weather station 400, starting the Bluetooth function of the handheld weather station, and establishing Bluetooth communication with the information acquisition equipment 300; as shown in fig. 3, the information acquisition device 300 has a processor module 301 and a bluetooth communication module 302;

A3, acquiring a standard wind speed value of the ith second in 2 hours and a standard wind direction angle value of the ith second in 2 hours by the handheld weather station 400, and transmitting the standard wind speed value and the standard wind direction angle value to the information acquisition equipment 300; acquiring an actual measurement wind speed value of the ith second in 2 hours and an actual measurement wind direction angle value of the ith second in 2 hours by the anemometer 100 to be measured, and transmitting the actual measurement wind speed value to the information acquisition equipment 300; wherein i=1, 2, 3.

A4, the signal acquisition equipment 300 calculates an actual measurement north-south wind speed value of the ith second in 2 hours according to the actual measurement wind speed value of the ith second in 2 hours and the actual measurement wind direction angle of the ith second in 2 hours:

x _{Measuring i}＝v _{Measuring i}*sinθ _{Measuring i}；

Wherein x _{Measuring i} is the measured north-south wind speed value of the ith second in 2 hours, v _{Measuring i} is the measured wind speed value of the ith second in 2 hours, and θ _{Measuring i} is the measured wind direction angle of the ith second in 2 hours; wherein i=1, 2, 3.

The signal acquisition device 300 calculates an actual measurement east-west wind speed value of the ith second in 2 hours according to the actual measurement wind speed value of the ith second in 2 hours and the actual measurement wind direction angle value of the ith second in 2 hours:

y _{Measuring i}＝v _{Measuring i}*sinθ _{Measuring i}；

Wherein y _{Measuring i} is the measured east-west wind speed value of the ith second in 2 hours, v _{Measuring i} is the measured wind speed value of the ith second in 2 hours, and θ _{Measuring i} is the measured wind direction angle value of the ith second in 2 hours; wherein i=1, 2, 3.

The signal acquisition device 300 calculates a standard north-south wind speed value of the ith second in 2 hours according to the standard wind speed value of the ith second in 2 hours and the standard wind direction angle value of the ith second in 2 hours:

x _{Label (C) i}＝v _{Label (C) i}*cosθ _{Label (C) i}；

Wherein x _{Label (C) i} is the standard north-south wind speed value of the ith second in 2 hours, v _{Label (C) i} is the standard wind speed value of the ith second in 2 hours, and θ _{Label (C) i} is the standard wind direction angle value of the ith second in 2 hours; wherein i=1, 2, 3.

The signal acquisition device 300 calculates a standard east-west wind speed value of the ith second in 2 hours according to the standard wind speed value of the ith second in 2 hours and the standard wind direction angle value of the ith second in 2 hours:

y _{Label (C) i}＝v _{Label (C) i}*cosθ _{Label (C) i}；

Wherein y _{Label (C) i} is the standard east-west wind speed value of the ith second in 2 hours, v _{Label (C) i} is the standard wind speed value of the ith second in 2 hours, and θ _{Label (C) i} is the standard wind direction angle value of the ith second in 2 hours; wherein i=1, 2, 3.

A5, the signal acquisition equipment 300 calculates an actual measurement north-south wind speed average value in 2 hours according to the actual measurement north-south wind speed value in the ith second in 2 hours:

Wherein, The measured north-south wind speed average value in 2 hours, x _{Measuring i} is the measured north-south wind speed value in the ith second in 2 hours, n is the sampling frequency, and n=7200; wherein i=1, 2, 3.

The signal acquisition device 300 calculates an average value of measured east-west wind speeds in 2 hours according to the measured east-west wind speed value in the ith second in 2 hours:

Wherein, The average value of the measured east-west wind speed in 2 hours is y _{Measuring i}, the measured east-west wind speed in the ith second in 2 hours is y, n is the sampling frequency, and n=7200; wherein i=1, 2, 3.

The signal acquisition device 300 calculates a standard north-south wind speed average value in 2 hours according to the standard north-south wind speed value in the ith second in 2 hours:

Wherein, The standard north-south wind speed average value in 2 hours, x _{Label (C) i} is the standard north-south wind speed value in the ith second in 2 hours, n is the sampling frequency, and n=7200; wherein i=1, 2, 3.

The signal acquisition device 300 calculates a standard east-west wind speed average value in 2 hours according to the standard east-west wind speed value in the ith second in 2 hours:

Wherein, The average value of standard east-west wind speeds in 2 hours is y _{Label (C) i}, the standard east-west wind speed value in the ith second in 2 hours is y, n is the sampling frequency, and n=7200; wherein i=1, 2, 3.

A6, the signal acquisition equipment 300 calculates an actual measurement wind speed average value in 2 hours according to the actual measurement north-south wind speed average value in 2 hours and the actual measurement east-west wind speed average value in 2 hours:

Wherein, Is the measured wind speed average value in 2 hours,/>Is the measured average of the north-south wind speeds over 2 hours,Is the measured east-west wind speed average value in 2 hours;

The signal acquisition device 300 calculates a standard wind speed average value in 2 hours according to the standard north-south wind speed average value in 2 hours and the standard east-west wind speed average value in 2 hours:

Wherein, Is the standard wind speed average value within 2 hours,/>Is a standard north-south wind speed average value within 2 hours,Is the standard east-west wind speed average value in 2 hours;

the signal acquisition device 300 calculates an actual measurement wind direction angle average value in 2 hours according to the actual measurement north-south wind speed average value in 2 hours and the actual measurement east-west wind speed average value in 2 hours:

Wherein, Is the average value of measured wind direction angles in 2 hours,/>Is the measured average value of the north-south wind speed in 2 hours,/>Is the measured east-west wind speed average value in 2 hours;

the signal acquisition device 300 calculates a standard wind direction angle average value in 2 hours according to a standard north-south wind speed average value in 2 hours and a standard east-west wind speed average value in 2 hours:

Wherein, Is the standard wind direction angle average value in 2 hours,/>Is a standard north-south wind speed average value within 2 hours,/>Is the standard east-west wind speed average value in 2 hours;

Processing the measured wind speed average value in 2 hours, the standard wind speed average value in 2 hours, the measured wind direction angle average value in 2 hours and the standard wind direction angle average value in 2 hours into a measured wind speed average value in 10 minutes, a standard wind speed average value in 10 minutes, a measured wind direction angle average value in 10 minutes and a standard wind direction angle average value in 10 minutes respectively;

A7, the signal acquisition equipment 300 calculates an average wind speed deviation value in 10 minutes according to the measured wind speed average value in 10 minutes and the standard wind speed average value in 10 minutes:

wherein e ₁ is the average wind speed deviation value within 10 minutes, Is the measured wind speed average value within 10 minutes,/>Is the standard wind speed average value within 10 minutes;

The signal acquisition device 300 calculates an average wind direction angle deviation value in 10 minutes according to the measured wind direction angle average value in 10 minutes and the standard wind direction angle average value in 10 minutes:

wherein e ₂ is the average wind direction angle deviation value in 10 minutes, Is the measured wind direction angle average value within 10 minutes,/>Is a standard wind direction angle average value within 10 minutes;

A8, transmitting the measured wind speed value of the ith second in 2 hours, the standard wind speed value of the ith second in 2 hours, the measured wind direction angle value of the ith second in 2 hours and the standard wind direction angle value of the ith second in 2 hours to the upper computer 600 through a Bluetooth communication mode by the information acquisition equipment 300;

A9, outputting a graph I consisting of measured wind speed values of the ith second in 2 hours and a graph II consisting of standard wind speed values of the ith second in 2 hours through the upper computer 600, and comparing the change trend of the graph I and the change trend of the graph II; outputting a graph III formed by the measured wind direction angle values of the ith second in 2 hours and a graph IV formed by the standard wind direction angle values of the ith second in 2 hours, and comparing the change trend of the graph III and the change trend of the graph IV; the upper computer 600 can simultaneously observe whether the initial position (0 ° position) of the handheld weather station 400 points to the north pole (N pole) direction; wherein the first graph and the second graph are in the same coordinate axis, the third graph and the fourth graph are in the same coordinate axis, i=1, 2, 3.

A10, judging whether the change trend of the graph I and the change trend of the graph II are the same through the upper computer 600, judging whether the average wind speed deviation value in 10 minutes is smaller than the maximum allowable error of the average wind speed in 10 minutes through the information acquisition equipment 300, judging whether the average wind direction angle deviation value in 10 minutes is smaller than the maximum error of the average wind direction in 10 minutes, if so, determining that the anemometer 100 to be tested is normal, and if not, determining that the anemometer 100 to be tested is abnormal. In this embodiment, the technical index requirements of the anemometer for detecting wind direction are shown in the following table 1, the maximum allowable error of the average wind speed within 10 minutes is ±10, and the maximum error of the average wind direction within 10 minutes is ±1.

TABLE 1

The embodiment of the invention also provides an anemometer detection system for realizing the anemometer detection method, which comprises the following steps:

the acquisition module is used for acquiring an actual measured wind speed value, a standard wind speed value, an actual measured wind direction angle value, a standard wind direction angle value, an average wind speed deviation value and an average wind direction angle deviation value of the position where the wind driven generator is located in real time;

The judging module is used for judging whether the change trend of the actually measured wind speed value is the same as that of the standard wind speed value, whether the change trend of the actually measured wind direction angle value is the same as that of the standard wind direction angle value, and whether the average wind speed deviation value and the average wind direction angle deviation value meet error judging conditions, if so, the wind direction anemometer is normal, and if not, the wind direction anemometer is abnormal.

The anemometer detection system adopts the anemometer detection method, so that the anemometer detection system has the beneficial effects of the anemometer detection method and is not repeated herein.

In addition, in the description of embodiments of the present invention, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "north-south," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Finally, it should be noted that: the above examples are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention, but it should be understood by those skilled in the art that the present invention is not limited thereto, and that the present invention is described in detail with reference to the foregoing examples: any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or perform equivalent substitution of some of the technical features, while remaining within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the present invention.

Claims (9)

1. The method is characterized by being used for carrying out field detection on an anemoscope to be detected, and the anemoscope is fixed at a first preset position at the top of a cabin of the wind driven generator; the handheld weather station is fixed at a second preset position, and the handheld weather station and the wind direction anemometer are ensured to be kept on the same axis; the initial position direction of the handheld weather station is the north pole direction, and the method comprises the following steps:

Acquiring an actual measured wind speed value, a standard wind speed value, an actual measured wind direction angle value, a standard wind direction angle value, an average wind speed deviation value and an average wind direction angle deviation value of the position of the wind driven generator in real time;

judging whether the variation trend of the actually measured wind speed value is the same as that of the standard wind speed value, whether the variation trend of the actually measured wind direction angle value is the same as that of the standard wind direction angle value, and whether the average wind speed deviation value and the average wind direction angle deviation value meet error judgment conditions, if so, the anemograph is normal, and if not, the anemograph is abnormal.

2. The anemometer detection method of claim 1 wherein the error determination condition includes:

The average wind speed deviation value is less than an upper limit average wind speed deviation value, and the average wind direction angle deviation value is less than an upper limit average wind direction angle deviation value.

3. The method for detecting an anemometer according to claim 2, wherein,

The calculation formula of the average wind speed deviation value is as follows:

Wherein e ₁ is the average wind speed deviation value, For the measured wind speed average value,/>Is the standard wind speed average value;

the calculation formula of the average wind direction angle deviation value is as follows:

wherein e ₂ is the average wind direction angle deviation value, For the measured wind direction angle average value,/>Is the standard wind direction angle average value.

4. The anemometer detection method of claim 3 wherein the calculation formula of the measured wind speed average value is:

Wherein, For the measured wind speed average value,/>For the measured average value of the wind speed in the north and south directions,/>The measured east-west wind speed average value;

The calculation formula of the standard wind speed average value is as follows:

Wherein, For the standard wind speed average,/>Is the average value of the standard north-south wind speed,/>Is the standard east-west wind speed average.

5. The anemometer detection method of claim 3 wherein the calculation formula of the measured wind direction angle average value is:

Wherein, For the measured wind direction angle average value,/>For the measured north-south wind speed average value,/>The measured east-west wind speed average value is;

the calculation formula of the standard wind direction angle average value is as follows:

Wherein, For the standard wind direction angle average value,/>For the standard north-south wind speed average value,/>Is the standard east-west wind speed average value.

6. The method according to claim 5, wherein the calculation formula of the measured average value of the north-south wind speed is:

Wherein, X _{Measuring i} is the measured north-south wind speed value, and n is the sampling times;

The calculation formula of the measured east-west wind speed average value is as follows:

Wherein, Y _{Measuring i} is the measured east-west wind speed value, and n is the sampling times;

the calculation formula of the standard north-south wind speed average value is as follows:

Wherein, X _{Label (C) i} is the standard north-south wind speed value, and n is the sampling frequency;

The calculation formula of the standard east-west wind speed average value is as follows:

Wherein, And y _{Label (C) i} is the standard east-west wind speed value, and n is the sampling frequency.

7. The method according to claim 6, wherein the calculation formula of the measured north-south wind speed value is:

x _{Measuring i}＝v _{Measuring i}*sinθ _{Measuring i}；

Wherein x _{Measuring i} is the measured north-south wind speed value, v _{Measuring i} is the measured wind speed value, and θ _{Measuring i} is the measured wind direction angle;

The calculation formula of the actually measured east-west wind speed value is as follows:

y _{Measuring i}＝v _{Measuring i}*sinθ _{Measuring i}；

Wherein y _{Measuring i} is the measured east-west wind speed value, v _{Measuring i} is the measured wind speed value, and θ _{Measuring i} is the measured wind direction angle value;

The calculation formula of the standard north-south wind speed value is as follows:

x _{Label (C) i}＝v _{Label (C) i}*cosθ _{Label (C) i}；

Wherein x _{Label (C) i} is the standard north-south wind speed value, v _{Label (C) i} is the standard wind speed value, and θ _{Label (C) i} is the standard wind direction angle value;

the standard east-west wind speed value has the following calculation formula:

y _{Label (C) i}＝v _{Label (C) i}*cosθ _{Label (C) i}；

Wherein y _{Label (C) i} is the standard east-west wind speed value, v _{Label (C) i} is the standard wind speed value, and θ _{Label (C) i} is the standard wind direction angle value.

8. The anemometer detection method of claim 1 wherein the signal output of the handheld weather station and the signal output of the anemometer are commonly connected to a signal input of a signal acquisition device;

the signal acquisition equipment is communicated with the upper computer through Bluetooth;

And judging the measured wind speed value, the standard wind speed value, the measured wind direction angle value, the standard wind direction angle value, the average wind speed deviation value and the average wind direction angle deviation value through the upper computer.

9. An anemometer detection system for use in the anemometer detection method according to any one of claims 1 to 8, the system comprising:

the acquisition module is used for acquiring an actual measured wind speed value, a standard wind speed value, an actual measured wind direction angle value, a standard wind direction angle value, an average wind speed deviation value and an average wind direction angle deviation value of the position where the wind driven generator is located in real time;

The judging module is used for judging whether the change trend of the actually measured wind speed value is the same as that of the standard wind speed value, whether the change trend of the actually measured wind direction angle value is the same as that of the standard wind direction angle value, and whether the average wind speed deviation value and the average wind direction angle deviation value meet error judging conditions, if so, the anemometer is normal, and if not, the anemometer is abnormal.