GB/T 19071.1-2018 English PDF (GB/T19071.1-2018)

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GB/T 19071.1-2018: Wind turbines - Asynchronous generator - Part 1: Technical conditions
GB/T 19071.1-2018
Wind turbines--Asynchronous generator--Part 1. Technical conditions
ICS 27.180
F11
National Standards of People's Republic of China
Replace GB/T 19071.1-2003
Wind turbine asynchronous generator
Part 1. Technical conditions
Published on.2018-05-14
2018-12-01 implementation
State market supervision and administration
China National Standardization Administration issued
Content
Foreword III
1 range 1
2 Normative references 1
3 type, basic parameters and size 1
4 Technical requirements 4
5 Test method 5
6 Inspection rules 5
7 Marking, packaging, transportation and storage 6
8 Environmental and safety requirements 8
9 Quality Assurance Period 8
Foreword
GB/T 19071 "Wind Generator Asynchronous Generator" is divided into two parts.
--- Part 1. Technical conditions;
--- Part 2. Test methods.
This part is the first part of GB/T 19071.
This part is drafted in accordance with the rules given in GB/T 1.1-2009.
This part replaces GB/T 19071.1-2003 "Wind Generator Asynchronous Generator Part 1. Technical Conditions". This part and
Compared with GB/T 19071.1-2003, the main technical changes are as follows.
--- Revised the scope of application of the standard (see Chapter 1);
--- Added normative references GB/T 1971, GB/T 1032, GB/T 10069.3, GB/T 20626.1 (see Chapter 2);
--- Increased rated power specifications for single-speed generators. 50kW, 100kW, 800kW, 1100kW,.2000kW, 2500kW,
3000kW (if the user has special requirements, can negotiate with the manufacturer) (see 3.5);
--- Removed the "400V, 1000V, 1500V" single-speed generator rated voltage (see 3.6);
--- Removed the rated power of the two-speed generator "660kW/180kW, 750kW/220kW" specification; added "660kW/
150kW, 750kW/200kW, 1300kW/250kW" specifications (see 3.7);
--- Increased the synchronous speed of the two-speed generator 1000r/min/750r/min (see 3.8);
--- Removed the slip of single-speed, two-speed generators (see.2003 version 3.9);
--- Increased shaft extension diameter specifications and deviation without keyway (see Table 3.9);
--- Modified the shaft runout tolerance (see 3.10,.2003 version 3.10.3);
--- Increased the installation size of the generator with a center height of 560, 630 (see 3.11,.2003 version 3.10.2);
---The minimum ambient air temperature is changed from "-15 °C" to "-20 °C" and the requirements for ambient temperature in cold regions are removed.
[see 4.2b),.2003 edition 4.2.2];
--- Removed the monthly average minimum temperature corresponding to relative humidity [see 4.2c),.2003 edition 4.2.3];
--- Added "Measurement of efficiency by direct method"; calculation of stray loss was changed from "0.5%" of rated output to
"0.025lgPn~0.005lgPn" (see 4.4);
---The generator overspeed has been changed from "1.2 times rated speed" to "1.2 times the highest operating speed", and the user has special requirements for overspeed.
Time to negotiate with the manufacturer (see 4.8);
--- When the measuring resistance is increased, the selection of the megohmmeter should comply with the provisions of GB/T 1032 (see 4.9);
--- Increased the requirement that there should be no damage between turns after a short-term elevated voltage test (see 4.12);
--- The vibration limit of the generator when the motor is running at no load is changed from "the effective value of the speed should not exceed 2.8mm/s" to "by
Table 1 of GB/T 10068-2008, and increase the measurement and requirements of vibration after overspeed test (see 4.14);
--- Generator noise limit was changed from "according to Table 5" to "according to GB/T 10069.3" (see 4.15);
--- Increased the current waveform distortion rate of the generator is not more than 5% (see 4.17);
--- Added "phase sequence inspection of windings", "blocking test at rated frequency" and "hour heat test" factory test items (see 6.1.2,.2003)
Year edition 6.2);
--- Removed the appearance of the generator and the description of the specific inspection contents of the mechanical inspection project (2003 edition 6.5);
--- Added "efficiency measurement", "moment of inertia test", "current waveform distortion rate measurement", "weighing" type test item (see 6.2.2,
2003 edition 6.4);
--- Removed the "shell protection level test" type test project (see 6.2.2,.2003 version 6.4);
--- Increased environmental and safety requirements (see Chapter 8);
--- Added quality assurance period (see Chapter 9).
This part was proposed by the China Machinery Industry Federation.
This part is under the jurisdiction of the National Wind Machinery Standardization Technical Committee (SAC/TC50).
This section drafted by. Xiangtan Electric Co., Ltd., Xiangtan Traction Electric Equipment Research Institute Co., Ltd., Xi'an Dunan Electric Co., Ltd.
Company, National Industrial and Mining Electric Drive Vehicle Quality Supervision and Inspection Center (Hunan), Xiangdian Wind Energy Co., Ltd., Zhongche Yongji Motor Co., Ltd., Guodian
United Power Technology Co., Ltd., Tsinghua University, Shenyang University of Technology National Rare Earth Permanent Magnet Motor Engineering Technology Research Center.
The main drafters of this section. Yan Shihong, Yin Zengfeng, Zhang Yuelei, Liang Xiaobo, Li Suping, Chen Bin, Zhu Guanghui, Pang Zhuohui, Huang Xinyu, Zhou Zhou,
Yang Wenzhao, Zhang Guangxing, Yu Bing, Chai Jianyun, Tang Renyuan, Chen Lixiang.
The previous versions of the standards replaced by this section are.
---GB/T 19071.1-2003.
Wind turbine asynchronous generator
Part 1. Technical conditions
1 Scope
This part of GB/T 19071 specifies the main types, basic parameters and rulers of grid-connected, fixed-speed wind turbine asynchronous generators.
Inch, technical requirements, test methods, inspection rules, test items, and requirements for marking and packaging, transportation, etc.
This section applies to grid-connected, fixed-speed single-speed or two-speed asynchronous generators (hereinafter referred to as “generators”). Other types of generators can be used as reference.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 191 packaging storage and transportation icon
GB/T 755 rotary motor rating and performance
GB/T 997-2008 Rotating electrical machine structure type, installation type and junction box position classification (IM code)
GB/T 1032 three-phase asynchronous motor test method
GB/T 1971 Rotating motor line end mark and direction of rotation
GB/T 4942.1-2006 Degree of protection (IP code) for the overall structure of rotating electrical machines
GB/T 10068-2008 Measurement, evaluation and limit of mechanical vibration vibration of motors with shaft center height of 56 mm and above
GB/T 10069.1 Determination of noise and noise - Part 1
GB/T 10069.3 Determination of noise and noise - Part 3. Noise limit
Damp heat test requirements for GB/T 12665 motors used under normal environmental conditions
GB/T 19071.2 Wind turbine generators - Part 2. Test methods
GB/T 22714 AC low-voltage motor forming winding inter-turn insulation test specification
GB/T 22719.1 AC low-voltage motors - fused windings - Part 1 . Test method
GB/T 22719.2 AC low-voltage motor, interleaved winding, inter-turn insulation - Part 2
3 type, basic parameters and dimensions
3.1 The protection level of the generator casing is not lower than the IP44 in GB/T 4942.1-2006.
3.2 The generator should have a reliable cooling method. If ventilation cooling is adopted, it should be ensured that the introduced air must not cause damage to the generator.
If water cooling is used, there should be no water seepage or water leakage problems.
3.3 The structure and installation type of the generator shall comply with the requirements of IMB3 in GB/T 997-2008.
3.4 The rating of the generator is a continuous rating based on the continuous working system (S1).
3.5 Single speed generators are recommended to be manufactured at the following rated power.
50kW, 100kW, 150kW,.200kW, 250kW, 300kW, 400kW, 500kW, 600kW, 660kW, 750kW,
800kW, 1000kW, 1100kW, 1320kW, 1500kW,.2000kW, 2500kW, 3000kW (if the user has special requirements
Seek to negotiate with the manufacturer).
3.6 The rated speed of the single-speed generator is 50Hz, the synchronous speed is 1500r/min, and the rated voltage is 690V (if the user has special requirements)
Seek to negotiate with the manufacturer).
3.7 Two-speed generators shall be manufactured at the following rated powers. 600kW/125kW, 660kW/150kW, 750kW/200kW,
1300kW/250kW (if the user has special requirements, it can be negotiated with the manufacturer).
3.8 The rated speed of the two-speed generator is 50Hz, and the synchronous speed is 1500r/min/1000r/min, 1000r/min/750r/min.
The rated voltage is 690V/690V (if the user has special requirements, it can be negotiated with the manufacturer).
Note. For the two-speed generator, the power, voltage, speed, slip and other parameters are expressed as follows. the parameters before the slash correspond to the high speed state, the parameters after the slash
The number corresponds to the low speed state.
3.9 The size of the generator shaft extension (without the keyway) and its deviation shall comply with the requirements of Table 1, and the size of the generator shaft extension key (with keyway) and its deviation
The difference should meet the requirements of Table 2 (if the user has special requirements, it can be negotiated with the manufacturer).
Table 1 Dimensions and deviations of shaft extension (without keyway)
Shaft diameter
Mm
deviation
Mm
90 0,-0.022
100 0,-0.022
110 0,-0.022
130 0,-0.025
150 0,-0.025
170 0,-0.025
Table 2 Dimensions and deviations of the shaft extension key (with keyway)
Shaft diameter
Mm
Key width
Mm
Key height
Mm
90 25 0-0.052 14 0-0.110
100 28 0-0.052 16 0-0.110
32 0-0.062 18 0-0.110
170 40 0-0.062 22 0-0.110
3.10 The axial runout tolerance of the shaft extension shall comply with the requirements of Table 3.
Table 3 Shaft radial runout tolerance
Shaft diameter
Mm
Round runout tolerance
Mm
>80~120 0.05
>130 0.06
3.11 The installation dimensions and dimensions of the generator are as specified in Table 4 and Figure 1 (if the user has special requirements, it can be negotiated with the manufacturer).
3.12 The parallelism tolerance of the generator axis to the foot support surface is 1 mm.
3.13 The flatness tolerance of the generator foot support surface is 0.30mm.
3.14 If the generator shaft is extended with a keyway, the symmetry tolerance is 0.05mm. The cylindrical shaft extension coaxiality tolerance is 0.05mm.
4 Technical requirements
4.1 The generator shall comply with the requirements of this part and be manufactured in accordance with the drawings and technical documents approved by the prescribed procedures.
4.2 The generator shall be capable of normal operation at the following altitudes, ambient temperatures and relative humidity conditions.
a) the altitude does not exceed 1000m;
b) ambient air temperature is not higher than 40 ° C, not lower than -20 ° C;
c) The average maximum relative humidity of the wettest month is not more than 95%.
When the generator needs to operate beyond one or more of the above limits, its special requirements can be negotiated between the user and the manufacturer.
4.3 Under the rated speed and rated power factor, when the deviation of voltage, frequency and rated value meets the requirements of GB/T 755, the generator shall be able to
normal operation.
4.4 When the generator is rated for operation, the tolerance of the output rated efficiency and power factor shall comply with the requirements of Table 5. Direct method
The measurement can also be measured by the indirect method, and the stray loss is calculated according to the rated output (0.025 lgPn~0.005 lgPn).
Table 5 rated efficiency and power factor tolerance
Item number
guarantee value
4-pole 6 pole
Tolerance
1 Efficiency η 0.96 0.93 -0.10 (1-η)
2 Power factor cosφ 0.88 0.83 -(1-cosφ)/6
4.5 At the rated voltage, the guaranteed value of the ratio of the maximum torque of the generator to the rated torque is 1500r/mim and above.
2.0 times, the rest is 1.8 times.
4.6 When the altitude and ambient air temperature meet the requirements of 4.2, the temperature rise limit of the generator winding and the allowable temperature of the bearing shall be in accordance with GB/T 755.
Provisions. If the altitude of the test site or the ambient air temperature is different from the provisions of 4.2, the temperature rise limit shall be corrected in accordance with the provisions of GB/T 755.
Bearing temperature limit 95 °C.
4.7 After the rated thermal test, the generator shall maintain the rated voltage and shall be able to withstand 1.15 times the rated load for 1 h.
Nuclear, but the generator should not be damaged or harmfully deformed.
4.8 The generator should be able to withstand 1.2 times the maximum operating speed (if the user has special requirements, can negotiate with the manufacturer), it takes 2 minutes without occurrence
Harmful deformation.
4.9 The insulation resistance of the stator winding of the generator shall not be lower than UN/1000MΩ after the thermal state or the heat test. When measuring the resistance, the megohmmeter
The selection should meet the requirements of GB/T 1032.
Note. UN---rated voltage in volts (V).
4.10 The stator windings of the generator and the two windings should be able to withstand the withstand voltage test for 1 min without breakdown.
The voltage has a frequency of 50 Hz and is as sinusoidal as possible. The effective value of the voltage is (2UN 1000)V, but should not be lower than 1500V.
This test shall not be repeated for the same generator. If the user requests it, it is allowed to be on site before the start of operation after installation.
Conduct a test, the test voltage shall be in accordance with the relevant provisions of GB/T 755.
4.11 The stator winding of the generator shall be capable of withstanding the inter-turn surge voltage...