CN106526238A - Apparatus and method for on-site detecting and correcting measurement precision of anemometer and anemoscope of wind mill - Google Patents

Abstract

A device and method for on-site detection and correction of the measurement accuracy of an anemometer and anemometer of a wind turbine. The standard anemometer and the standard wind direction instrument for comparing the detected data, the signal separation module connected with the anemometer to be tested and the wind direction instrument for separating the signals measured by the anemometer to be measured and the wind direction instrument to be measured, and the signal separation module , a data acquisition module connected to a standard anemometer and a standard anemometer, a wind turbine axis measurement module connected to the data acquisition module, and a data display and processing module; method; through the device and method of the present invention, the measurement accuracy of the anemometer and anemometer installed on the wind turbine nacelle can be judged, and how to correct the anemometer can be determined.

Description

On-site detection and calibration of wind turbine anemometer, wind direction instrument measurement accuracy device and method

technical field

The invention relates to the technical field of wind speed and anemometer measurement accuracy detection, in particular to a device and method for on-site detection and calibration of wind turbine anemometer and anemometer measurement accuracy.

Background technique

At present, there are basically no mature and practical devices and methods for on-site detection of rotary anemometers and wind direction instruments.

When the measurement accuracy of the rotating anemometer and anemometer installed on the wind turbine nacelle decreases, the main control system cannot recognize it, and cannot determine how to correct the problematic anemometer.

Contents of the invention

In order to overcome the above-mentioned problems in the prior art, the object of the present invention is to provide a device and method for on-site detection and correction of the measurement accuracy of the anemometer and anemometer of a rotary wind turbine, which can measure the accuracy of the anemometer and wind direction installed on the nacelle of the wind turbine. The measurement accuracy of the instrument can be judged, and how to correct the rotating anemometer and wind direction can be determined.

To achieve the above object, the present invention adopts the following technical solutions:

The device for on-site detection and calibration of the measurement accuracy of the anemometer and anemometer of the wind turbine, including the calibrated ones installed on the nacelle of the wind turbine and respectively used to detect the anemometer 1 to be measured and the anemometer 2 to be measured installed on the nacelle of the wind turbine A standard anemometer 3 and a standard anemometer 4 for data comparison, and a signal separation device connected to the anemometer 1 and the anemometer 2 for separating the signals measured by the anemometer 1 and the anemometer 2 Module 6, data acquisition module 7 connected to signal separation module 6, standard anemometer 3 and standard anemometer 4, wind turbine axis measurement module 5 and data display and processing module 8 connected to data acquisition module 7.

The above-mentioned on-site detection and correction device for the measurement accuracy of the anemometer and anemometer of the wind turbine, the method for on-site detection and calibration of the measurement accuracy of the anemometer and anemometer of the wind turbine, comprises the following steps:

Step 1: first, the wind turbine axis measurement module 5 determines the wind turbine axis position, to accurately determine the 4 zero line positions of the standard anemometer; the data collection module 7 collects the standard anemometer 3 and the standard anemometer 4 simultaneously And the detection data of the anemometer 1 to be measured and the anemometer 2 to be measured separated by the signal separation module 6, and the collected detection data is subjected to amplification and filtering processing and then sent to the data display and processing module 8, and the data display and processing module 8 Comparing the processed detection data, if the detection data of the anemometer 1 to be measured is the same as that of the standard anemometer 3 and the anemometer 2 to be measured is the same as that of the standard anemometer 4, it means that the anemometer 1 to be measured and the anemometer 2 to be measured are the same. The detection data is accurate, otherwise it means that there is an error in the detection data of the anemometer 1 to be measured and the anemometer 2 to be measured;

Step 2: the detection data of the anemometer 2 to be measured after the separation is input to the main control system of the wind turbine and the data acquisition module 7 simultaneously by the signal separation module 6 to ensure that the normal operation of the blower fan is detected in the process of the anemometer and the anemometer; If there is an error in the detection data of the wind direction instrument 2, and the error is within its allowable correction range, it is corrected by repeatedly adjusting the slope and intercept parameters corresponding to the wind direction instrument 2 to be measured in the main control system of the wind turbine until the wind direction instrument to be measured 2 The measured data is consistent with the measured data of the standard anemometer 4; if the error of the detection data of the anemometer 2 to be tested exceeds its allowable correction range, replace the anemometer directly; if there is an error in the detection data of the anemometer 1 to be tested, directly Replace the anemometer.

The present invention has the following advantages:

1. The detection method of the present invention is efficient, fast and low in cost.

2. It can avoid the disassembly and assembly of the anemometer and wind direction to be measured, and effectively reduce the impact on the measurement accuracy of the anemometer during disassembly.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the device of the present invention.

Fig. 2 is a flow chart of the method of the present invention.

detailed description

The present invention will be further described in detail below in conjunction with the drawings and specific implementation process.

As shown in Fig. 1, the present invention detects and corrects the device of measuring accuracy of wind turbine anemometer and anemometer on the spot, comprises the anemometer 1 to be measured that is installed on the wind turbine nacelle and is respectively used for being installed on the wind turbine nacelle through calibration A standard anemometer 3 and a standard anemometer 4 that are compared with the detection data of the anemometer 2 to be measured are used to connect the anemometer 1 to be measured and the anemometer 2 to be connected with the anemometer 1 to be measured and the anemometer 2 to be measured. The signal separation module 6 for separating the measured signal, the data acquisition module 7 connected with the signal separation module 6, the standard anemometer 3 and the standard anemometer 4, the wind turbine axis measurement module 5 connected with the data acquisition module 7 and the data display and Processing module 8.

As shown in Fig. 2, the device of the present invention detects on-site and corrects the measurement accuracy of the anemometer of the wind turbine and corrects the method for the accuracy of the measurement of the anemometer of the wind turbine, comprising the following steps:

Step 1: first, the wind turbine axis measurement module 5 determines the wind turbine axis position, to accurately determine the 4 zero line positions of the standard anemometer; the data collection module 7 collects the standard anemometer 3 and the standard anemometer 4 simultaneously And the detection data of the anemometer 1 to be measured and the anemometer 2 to be measured separated by the signal separation module 6, and the collected detection data is subjected to amplification and filtering processing and then sent to the data display and processing module 8, and the data display and processing module 8 Comparing the processed detection data, if the detection data of the anemometer 1 to be measured is the same as that of the standard anemometer 3 and the anemometer 2 to be measured is the same as that of the standard anemometer 4, it means that the anemometer 1 to be measured and the anemometer 2 to be measured are the same. The detection data is accurate, otherwise it means that there is an error in the detection data of the anemometer 1 to be measured and the anemometer 2 to be measured;

Step 2: the signal separation module 6 inputs the detection data of the separated anemometer 2 to the main control system of the wind turbine and the data acquisition module 7 simultaneously to ensure that the blower fan works normally in the process of detecting the anemometer anemometer; if the wind direction to be measured If there is an error in the detection data of instrument 2, and the error is within its allowable correction range, it is corrected by repeatedly adjusting the slope and intercept parameters corresponding to the wind direction instrument 2 to be measured by the main control system of the wind turbine until the wind direction instrument to be measured 2 The measured data is consistent with the measured data of the standard wind direction instrument 4; if the error of the detection data of the wind direction instrument 2 to be tested exceeds its allowable correction range, replace the wind direction instrument directly. If there is an error in the detection data of the anemometer 1 to be tested, the anemometer is replaced directly.

Claims (2)

1. Site Detection and correction wind energy conversion system anemobiagraph, the device of anemoscope certainty of measurement, it is characterised in that：Including installed in wind What in power machine cabin, Jing was demarcated is respectively used to and the anemobiagraph to be measured (1) and anemoscope to be measured (2) in wind energy conversion system cabin The standard wind speed instrument (3) that is compared of detection data and standard anemoscope (4), with anemobiagraph to be measured (1) and anemoscope to be measured (2) connect for anemobiagraph to be measured (1) and anemoscope to be measured (2) measured signal are carried out detached signal separation module (6), The data acquisition module (7) being connected with signal separation module (6), standard wind speed instrument (3) and standard anemoscope (4), is adopted with data Wind energy conversion system axis measurement module (5) and data display and processing module (8) that collection module (7) connects.

2. Site Detection described in claim 1 and correction wind energy conversion system anemobiagraph, the device of anemoscope certainty of measurement carry out live inspection Survey and correct wind energy conversion system anemobiagraph, the method for anemoscope certainty of measurement, it is characterised in that：Comprise the steps：

Step 1:First, wind energy conversion system axis measurement module (5) determine wind turbine shaft line position, accurately to determine standard (4) zero line position of anemoscope；Data acquisition module (7) at the same gather standard wind speed instrument (3) and standard anemoscope (4) with And signal separation module (6) separate after anemobiagraph to be measured (1) and anemoscope to be measured (2) detection data, and will collect Detection data is sent to data display and processing module (8) after being amplified Filtering Processing, data display and processing module (8) are right Detection data after process is contrasted, if anemobiagraph to be measured (1) and standard wind speed instrument (3) and anemoscope to be measured (2) and mark The detection data of quasi- anemoscope (4) is identical, then illustrate the detection data of anemobiagraph to be measured (1) and anemoscope to be measured (2) accurately, instead Then illustrate that anemobiagraph to be measured (1) and the detection data of anemoscope to be measured (2) have error；

Step 2:Signal separation module (6) will be separated after the detection data of anemoscope to be measured (2) be simultaneously input into wind energy conversion system Master control system and data acquisition module (7), it is ensured that blower fan normal work during detection anemobiagraph anemoscope；If anemoscope to be measured (2) there is error in detection data, and error is within the extent of amendment which allows, then by adjusting repeatedly wind energy conversion system master control system In system, anemoscope (2) to be measured corresponding slope and intercept parameter are corrected, until the same standard of the surveyed data of anemoscope to be measured (2) The surveyed data of anemoscope (4) are consistent；If the extent of amendment that the error information detection of anemoscope (2) to be measured is allowed beyond which, directly Connect replacing anemoscope；

Anemobiagraph is changed directly if the detection data of anemobiagraph to be measured (1) has error.