JB/T 10137-1999 Test methods for small wind turbines for water lifting and power generation
Some standard content:
1SC.27.180
Machinery Industry Standard of the People's Republic of China
JE/T10137--1999
Small wind turbines for water lifting and power generation
Test methods
Testing methods for small wind energy conversion system1999-08-06 Released
National Machinery Industry Bureau
Implemented on 2000-01-01
JB/T10137-1999
1 US Solid
3 Preparation before the test
3 Performance test age
4 Cattle production test span
5 Test limited report
Record A (accurate Appendix) Test instrument equipment times
(requirements for prompts) Several points on the aerodynamic characteristics of wind turbines using the design method (requirements for the prompts, tuning characteristics test ten A few notes 1
JB/T10137-1999
Appendix A of this standard is a standard appendix,
Appendix B and Appendix C of this standard are both reminder appendixes. This standard was proposed and managed by the National Wind Power Standardization Technical Committee. The main drafter of this standard is Hehot Jiangmu Machinery Research Institute: Peng Yongzai,
This standard was published in January 2019. Published for the first time.
1 model
People's Republic of China Machine Industry Standard
Testing methods for sunall wmd energy conversiau system Testing methods for small wind turbines for water lifting and power generation JB/T10137—1999
Note standard for performance testing methods and production testing of wind turbines is used for field performance testing and dust production control of horizontal axis small-power wind water pumping units and wind power generation-charging units. Inspection: 2 Preparation before the test
2.1 Preparation of the machine
The test prototype should have a quality inspection certificate, pressure operating instructions and necessary technical documents. The prototype should be easy to pick up before the test. Carry out the measurement and report the results to Table 3; the use, adjustment and maintenance of the test prototype should be carried out in accordance with the instructions for use. 2.7 Instrument preparation
2.2.1 "Before the test, the test instrument, instrument and other See Appendix A (Standard Explanation) for calibration and correction. 2.22 The instrument should be selected so that the measured value is within 20% to 95% of the measuring range of the compensator. 2.3 Installation of two-speed wind instrument ||tt ||On both sides of the wind turbine in the direction directly multiplied by the maximum wind direction: Set up two wind speed and direction gauges symmetrically, the height of which is equal to the height of the center of the wind wheel from the ground: and each wind speed and direction gauge is installed at the The distance from the center of the wind turbine tower should be -5 times the diameter of the wind turbine. When calculating the test value, the arithmetic mean of the netter shall be taken. 3 Performance test
3.1 Determination of aerodynamic characteristics of the wind turbine||tt| |Photometry should be carried out when the wind direction remains unchanged and the wind speed is less than 5m/s. Fill in the measurement results in Table 1. 3.1.1 Measurement principle
2
In the formula, -
Fengyan's angular velocity, rad/g:
R - wind wheel radius, m
u - wind speed, m/s: | | tt | .
.Wind rotor moment, N·m
function - wind rotor state torque;
5 wind energy utilization coefficient:
J—wind wheel rotation amount, km\:
Wind wheel angle: rad:
Time, 5:
-Wind wheel angular acceleration, rad/s. || tt | After measuring the rotational inertia of the wind wheel, Z, and can be obtained correspondingly, so that the travel Z) and ·, (Z) can be drawn (see Figure 5
3.1.2 Xie Dingwan Method
3.1.2.1 Determination of the rotational inertia of the low-speed wind wheel
Let the wind wheel face the wind. When the wind wheel is not loaded, use a tension meter to measure the starting force F, and at the same time Measure the speed at the corresponding moment, and then measure the vertical distance between the line of action of F and the wheel rotation center. The starting torque 4 is: M=F. The electrical measurement method and test also require the wind turbine to face the wind and simultaneously measure the network speed relative to the starting torque:
After adding the necessary angle, and relative starting torque, the rotation of the wind wheel can be obtained: No load, at a place where the distance between any propeller and the center of the wind wheel is !, a return column with a mass of P and a radius of (m) depends on the weight (see Figure 1), which destroys the static balance of the wind wheel, and then Pull it open (less than or equal to 5") and let it swing, and measure the swing period. The rotating baking plate of the Liufeng wheel is:
J=Jm-Jn
A mass plate with an additional weight, k ;
where p
[distance between the weight and the center of the wind wheel, m:
- gravity acceleration, m/s;
T - the distance between the wind wheel and The rotation period of the entire weight block system can be measured regularly, and the number of vibrations in seconds K is as follows: The rotational inertia of the entire system of the weight block at one time, kg, m: 18||tt ||JR10137—1999
The rotational inertia of a weight block P is not greater than (8%-10%) J]::m. Figure 1 shows the rotational inertia according to the dynamic method
3.1.2.3 Determination of wind turbine aerodynamic equality
a) The test principle diagram is shown in Figure 2.
Figure 2 Pulse method test principle block diagram
b) One form of recording identification is shown in Figure 3, normal highway
J day 1013#—1999
Figure 3 Pulse method measurement record showing the overall picture
e) Quick picture 3, make the curves and curves in Figure 4. From the - "curve, after one differential differentiation, the t curve can be obtained. The e curve:
4v-1, 4-r,-1,
The video tape required in Figure 3 can be The following force is used for sorting; assuming the time scale is, then
where: the number of grid lines at one time:
# line graph
(s/mm)
The time represented by each grid on the time coordinate, 5:1H, the distance and edge of the grid time scale.
Let the wind speed scale be K: it represents the wind speed value corresponding to each height on the coordinate, which can be determined by the anemometer. Calibrating the mountain line with the soul is obtained: as long as the wind speed record can be obtained from the wind speed recorder (mm), then x and v=khm's): JB/T10137-1999
Suppose the angle change device of the speed measuring plate Divide the film into equal parts [see Appendix B (end of prompt) Figure B2], measure the angle of one equal part 4ud)
Take the corner waveform starting from the "0" line and call it a unit, starting from the "0" line. There are waveforms at intervals from the beginning to the turn, and the distance from these unit points to the time "" line is: 8,-4 8; 8,-2A 0':0,-32 0! | |tt | At this time, this characteristic can also be processed by an electronic training computer. 48 | Determination of starting the ventilation
When testing, the wind turbine must be facing the wind, the unit is in the normal operating position, and the wind speed is relatively stable, and the change amplitude is less than 0.5m/issue. The measurement starts from the stationary state of the unit. When the rotation is greater than · circle, the wind speed is small, and this wind is called the starting wind speed. The number of single-repeated tests is at least 6 times, and the arithmetic mean value is taken, and the test results are put into Table 53.3 to adjust the stability
Fig. 6 is a diagram of the measurement device,
Wind speed wind meter
Figure 6 Brief cut of the interrogation characteristic measuring device
JB/T10137-1999
Installation of the wind speed meter Same as 2.3, if the wind connection is greater than 8m and the wind direction does not change, the ground adjustment regulations will not work to determine the direction of the wind turbine and the direction of the wind direction device - to 3.3.1. The directional sensitivity test is carried out when the unit is in the normal working position. Based on the measured curve, the wind direction and the wind rotor shaft deflection degree are 0 and the wind speed is adjusted. Calculate its directional sensitivity K. K.
Where: .-
Starting wind speed: m/5:
3.3.2 Qualitative
Test to determine when the unit is in the working state. According to the test results, the process curve of wind turbine adjustment is made "(Figure 1)". The stability of the directional adjustment process is determined based on this.
Take "a" as the reference:
The ratio of the wind speed of the rotor to the wind turbine (Figure 1) shows the directional process curve. In the figure, a and b) belong to stable directional adjustment, while c) belongs to abnormal directional adjustment. Stable steering process. 3.4 The output characteristic
test should be carried out in the whole wind speed range from the start of the unit to the shutdown. Due to the wind density of the test site, the maximum wind speed of the test can be lower than the wind speed when the unit is shut down, but it must not be lower than 1.4 of the design wind speed of the unit. In the whole test range: the number of measurement points must not be less than 30 times, and the test results are shown in Table 6 and Table 7. When the instantaneous wind speed cannot be measured due to instrument conditions, the result measured by the average wind speed meter is allowed to replace the calculation of formula [10] and formula (12). 3. 4. 1 Wind turbine generator set
The measurement interval of the average value of each test point is 0.5m. The unit is connected in normal operation, and the instantaneous wind speed is measured step by step: charging current and voltage, and then the calculation is performed:
V year road
1) When there is an angle between the wind rotor axis and the layer wing. When the wind is stable against the wind, the angle is set to 10°+Ym2. When the wind is against the wind, the wind rotor axis wind is consistent with the set number. When the wind is against the wind. When the wind rotor shaft is aligned with the wind direction, it will continue to deflect in the direction of the wind direction, and then return to the direction of the wind direction, and then stabilize and move.
Raise the sea to face the wind
\See when the wind can be changed. The wind rotor shaft is wet.
In the formula:
JBT10137—1999
The average value of the wind speed cubed within the time moment of 0.5min, m; instantaneous wind speed, m/5;
——time interval 0.5min The average voltage within 0.5min, V; the average current within 0.5min, A; W——output power, W;
number of measuring points,
According to the test results, make its output characteristic = (curve, 3.4.2 Wind power water pumping unit
For the rod pump, the stroke number is the limit, and the stroke number of each test point shall not be less than 30. Record the instantaneous wind speed, half-mean flow and rise, and then calculate: (121
In the formula ：The average flow rate within the specified test stroke number, m/s; force... The corresponding average flow rate, city:
Water density, N, m;
Sea, w.
·(13)
Other pumps can be tested with the time interval 0.Smin as the benchmark. For the measurement of flow rate 0, the weighing method is used for the pull rod ticket, and the weighing method and flow meter method can be used for other pumps.
According to the test results, the output characteristic P*-（+） is drawn. 3. 5 Rotational speed characteristics
3.5. 1 Determination of speed characteristics
The speed characteristics can be measured simultaneously with the output characteristics. The wind wheel speed can be measured using photoelectric, magnetoelectric and other sensors. For wind turbines, the plate depth can also be measured for conversion. According to the test results, draw the function graph of average speed and oil pressure. 3.5.2 Unbalance of speed
According to the measured oil pressure curve, calculate the imbalance of speed: 5=*heat×100%
Wherein:
When the wind speed is equal to 1.4 and the speed regulation wind speed signal is turned on, the average speed of the measuring point on the wind wheel rotation characteristic is in-1; when the wind speed is the speed regulation wind speed signal, the average speed of the measuring point on the wind wheel rotation characteristic is in-1; when the wind speed is the speed regulation wind speed signal, the average speed of the measuring point on the wind wheel rotation characteristic is in-1. The average speed, n,u,——the wind speed when speed regulation starts, mt; U\1.4 times the wind speed when speed regulation starts, m/s3.6 Determination of wind rotor load characteristics
A variable speed prime mover replaces the wind rotor to drag the wind turbine rotor, and the speed is changed from 1.2 times the speed when the unit is set to output. The average torque M, (or power N,) at the input end of the load is measured step by step, and the test results are plotted as follows: According to 7
JB/T 10137-1999
test results are plotted as a function of torque M and power M. During the test, if the load is a generator set, the wiring of the generator set must be consistent with the positive working state, and its negative load voltage is set at an integer multiple of and consistent with the design value: If the load is a water pumping unit, its head is consistent with the design value. 3.7 Unit characteristics
Unit characteristics refer to the matching characteristics of the mechanical characteristics of the wind rotor and its load. The mechanical characteristics of the wind turbine are the changes in power with respect to the speed. According to the measured aerodynamic characteristics of the wind rotor, the mechanical characteristics of the wind rotor are calculated according to the results in Table 2. The load characteristics of the wind rotor are drawn on the same graph. Its cavity form is shown in Figure 8.
Negative reflection
Figure 8 Wind turbine load curve
Each point on the line is the maximum power value generated by the wind rotor at a certain wind speed. Connecting each point of the mechanical characteristic curve, we get curve A, which represents the best working state of the wind turbine. Therefore, the load curve (dashed line in the figure) should be made to coincide with curve 4. Curves B and B are unfavorable matching states. Working in the unstable area, B\ makes the wind turbine output power reduce, 3.8 Other
The characteristics of the generator, the regulator and the water-lifting equipment shall be tested according to the relevant standards, 3.9 Correction
3.9. Correction of the output power of the wind wheel
When measuring the aerodynamic stability and output characteristics of the wind wheel, it is necessary to correct the sea control altitude and air temperature (correct to 20% of the temperature and the pressure is 101325×1α-bar. Assume that the temperature is 1℃ and the pressure is 8 bar, then: N, KN. -
The formula is: N is the power when r and bar, w
(273+)x101325×105
N—power when 20 and 101325×10 bar, W; K—correction coefficient.
4 Production test
4.1 Test purpose; to assess the economic, reliability, adaptability and durability compensation of wind turbines under production conditions. 4.2 Test The selection of the test point should be more than two, and the test should be carried out at different points. The selection of the test point should be representative of the test time. 4.3. The pure working time of the prototype and the core should not be less than 2000h. If a major accident occurs during the test (main working parts are damaged), the test needs to be repeated. The maximum wind speed of the test should not be lower than the maximum wind speed of the test point in the year. Fill in the test results in Table 9. 4.4 After the test, the wear plate of the main wearing parts should be measured. And deformation disk, during the test, when the parts are damaged, the cause and location of the damage should be recorded and measured, and the total working time of the parts should be recorded. The results are recorded in Table 3 and Table 4. 4.5 Determination of technical and economic indicators
4.5.1 Reliability coefficient in use
Where: x—
Reliability coefficient in use
-accumulated working time, h: bZxz.net
Tm——the total working time, h
4.5.2 Annual production
4. 5.21 Determination of half-average wind speed
Use a wind speed and direction recorder, and record automatically for 24 hours: the half-average of 10m at the end point can be condensed into the hourly average value, and the arithmetic mean of 24 times is the average wind speed.
If conditions are limited, it is possible to use scheduled daily measurements 4 times, take the average value of 2m measured as the hourly average value, calculate the average wind speed of the 4 measurements, and then convert it to the value of 24 measurements: Y=0.08+0.92X
Where: y average wind speed of 24 measurements, m/s; - average wind speed of 4 measurements, m/s.
The normalized average wind speed during the measurement period is
Where:
The average wind speed during the observation period, m/5 ;
The average wind speed of each peak, ms;
---Observation days
4.5.2.2 Annual power generation
(HB)
Use a DC watt-hour meter to automatically record the power generation. It is also allowed to calculate the power generation barrier by recording the power consumption. For the test, the system wiring must be consistent with the actual operation. When the battery is overcharged, it should be discharged in time to ensure that all wind energy is utilized. The annual power generation is calculated as:
Where: Wu—annual power generation, kw·h:
The total charge (or total power consumption) during the test, kw·h: T-the total duration of the test, h
4.5.7.The water lifting volume in 3 years
Use the water meter to automatically record the water lifting tray. For the lower rod pump, a flushing drain needs to be added in front of the water meter. During the test, the water lifting height must be consistent with the design base
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