|
US$999.00 · In stock
Delivery: <= 7 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 7064-2017: Specific requirements for cylindrical rotor synchronous machines
Status: Valid GB/T 7064: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 7064-2017 | English | 999 |
Add to Cart
|
7 days [Need to translate]
|
Specific requirements for cylindrical rotor synchronous machines
| Valid |
GB/T 7064-2017
|
| GB/T 7064-2008 | English | RFQ |
ASK
|
5 days [Need to translate]
|
Specific requirements for cylindrical rotor synchronous machines
| Obsolete |
GB/T 7064-2008
|
| GB/T 7064-2002 | English | RFQ |
ASK
|
6 days [Need to translate]
|
The technical requirements of the turbine-type synchronous motor
| Obsolete |
GB/T 7064-2002
|
| GB/T 7064-1996 | English | 919 |
Add to Cart
|
6 days [Need to translate]
|
Requirements for turbine type synchronous machine
| Obsolete |
GB/T 7064-1996
|
| GB 7064-1986 | English | 719 |
Add to Cart
|
5 days [Need to translate]
|
General requirements on turbogenerators
| Obsolete |
GB 7064-1986
|
PDF similar to GB/T 7064-2017
Basic data | Standard ID | GB/T 7064-2017 (GB/T7064-2017) | | Description (Translated English) | Specific requirements for cylindrical rotor synchronous machines | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | K21 | | Classification of International Standard | 29.160.20 | | Word Count Estimation | 50,533 | | Date of Issue | 2017-12-29 | | Date of Implementation | 2018-07-01 | | Older Standard (superseded by this standard) | GB/T 7064-2008 | | Regulation (derived from) | National Standards Bulletin 2017 No. 32 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | GB/T 7064-2017: Specific requirements for cylindrical rotor synchronous machines---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Specific requirements for cylindrical rotor synchronous machines
ICS 29.160.20
K21
National Standards of People's Republic of China
Replace GB/T 7064-2008
Hidden pole synchronous generator technical requirements
Released on.2017-12-29
2018-07-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
China National Standardization Administration issued
Content
Foreword V
1 Scope 1
2 Normative references 1
3 Terms and Definitions 2
4 General requirements 2
4.1 General 2
4.2 rated condition 2
4.3 rated voltage 3
4.4 Power Factor 3
4.5 rated speed 3
4.6 Voltage and frequency range 3
4.7 Direction of rotation and phase sequence 4
4.8 Stator winding connection, output voltage 4
4.9 Motor insulation 4
4.10 Prevention of shaft current 6
4.11 Overspeed test 6
4.12 Critical speed 6
4.13 Output Figure 6
4.14 Overcurrent requirement 7
4.15 Ability to withstand unbalanced loads and harmonic currents 8
4.16 Sudden short circuit at the outlet end 9
4.17 Grid 9
4.18 Short Circuit Ratio (SCR) 9
4.19 Straight Axis Transient Reactance (x'd) and Straight Axis Super Transient Reactance (x′′d) 10
4.20 Short-circuit ratio, direct-axis transient reactance, tolerance of straight-axis super-transient reactance 10
4.21 Mechanical condition of the rotor 10
4.22 cooler 11
4.23 Noise 11
4.24 Requirements for Exciter 11
4.25 Vibration Limit 12
4.26 Irregularity of Voltage Waveforms Total Harmonic Distortion (THD) 13
4.27 stator winding three-phase DC resistance allowable deviation 13
4.28 Bearing oil temperature and bearing temperature limit 13
4.29 Efficiency 13
4.30 Monitoring 14
4.31 Test inspection items and acceptance rules 14
4.32 Nameplate, lot number 15
4.33 Packing, transportation, storage 16
4.34 Basic Requirements for Motor Design Information 16
4.35 Complete supply range 17
4.36 Spare parts 17
4.37 Random installation drawings and technical documents 17
4.38 Warranty period 17
4.39 Reliability and Design Life 17
5 air-cooled motor 17
5.1 General 17
5.2 Motor Ventilation Cooling Type 17
5.3 Conditions of use 17
5.4 Temperature rise and temperature limits for each part of the motor 18
6 Hydrogen or liquid cooled motor 18
6.1 General 18
6.2 Conditions of use 18
6.3 Base and end cover 19
6.4 Stator winding outlet 19
6.5 Temperature rise and temperature limit of each part of the motor 19
6.6 Hydrogen cooled motor sealing requirements 20
6.7 Hydrogen direct cooling rotor air duct inspection 20
6.8 Winding internal water system inspection 20
6.9 Water run 20
6.10 Auxiliary System 20
6.11 Test item 20
6.12 Safety measures for hydrogen-cooled hidden-pole synchronous motors 21
6.13 Nameplate 21
6.14 Maintenance measures during long-term shutdown 21
7 gas turbine generator or for combined cycle generator 21
7.1 General 21
7.2 Conditions of use 21
7.3 rated output 22
7.4 Capacity 22
7.5 Nameplate 24
7.6 Temperature test 24
8 4-pole generator for nuclear power 24
8.1 General 24
8.2 Design life 24
8.3 Spare Parts Strategy 25
Appendix A (informative) Main changes to GB/T 7064-2008 26
Appendix B (informative appendix) Basic requirements information required by the purchaser, prime mover, motor supplier, etc. when ordering 28
Appendix C (Normative) Some of the performance requirements covered in the body of this standard 30
Appendix D (informative) Complete supply scope 33
Appendix E (informative) Equipment and spare parts 34
Appendix F (informative) Random installation drawings and technical documents 35
F.1 Product Certificate 35
F.2 Product use and maintenance instructions 35
F.3 packing list 35
F.4 Product Design 35
F.5 Pattern of hydrogen cooled motor 36
F.6 Water-cooled motor pattern 36
F.7 Patterns for hydrogen, oil, water control systems and excitation systems 36
Appendix G (Normative) Safety measures for hydrogen-cooled hidden-pole synchronous generators (or cameras) 37
G.1 General 37
G.2 Hydrogen supply purity 37
G.3 Normal operating conditions 37
G.4 Protection against collector rings and exciters connected to them 37
G.5 Auxiliary equipment 37
G.5.1 General 37
G.5.2 Exhaust box 37
G.5.3 Gas dryer 38
G.5.4 Meters and controls 38
G.5.5 Electrical connection 38
G.5.6 Gas isolation 38
G.5.7 Accumulation of hydrogen-air mixed gas 39
G.5.8 Ventilation line 39
G.5.9 Neighboring area 39
G.6 Operation of the generator and its auxiliary equipment 40
G.6.1 Combustible source 40
G.6.2 Hydrogen, air mixture 40
G.6.3 Air and hydrogen replacement 40
G.6.4 Sealing oil supply and hydrogen pressure 40
G.6.5 Air tightness 40
G.6.6 Water system 41
G.7 Full ventilation guide 41
Reference 42
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 7064-2008 "Hidden-pole synchronous generator technical requirements", compared with GB/T 7064-2008 main technical changes
The following is as follows.
--- Added the terminology of synchronous generators and synchronous camera (see Chapter 3);
--- Added camera-related content to make this standard suitable for all types of hidden-pole synchronous generators (or camera) (see Chapter 4);
--- Increased current harmonics, grid-connected, transmission line steady-state switching operation, fast reclosing, sub-synchronous resonance and sub-synchronous oscillation, asynchronous
Operation, efficiency, design life requirements (see 4.15.2, 4.17, 4.21.3, 4.21.4, 4.21.5, 4.21.6, 4.29, 4.39);
---Modified the contents of air-cooled motors (see Chapter 5, Chapter 5 of the.2008 edition);
---Modified the contents of a hydrogen or liquid cooled motor (see Chapter 6, Chapter 6 of the.2008 edition);
--- Increased maintenance measures during long-term downtime and improved standard adaptability (see 6.14);
--- Revised the relevant content of gas turbine generators (see Chapter 7, Chapter 7 of the.2008 edition);
--- Increased the use of 4-pole generators for nuclear power, making this standard more applicable (see Chapter 8);
--- Added the main modification of Appendix A to GB/T 7064-2008;
--- Increased the basic requirements information required by the demander, prime mover and generator supplier when ordering the information Appendix B;
--- Added references.
This standard was proposed by the China Electrical Equipment Industry Association.
This standard is under the jurisdiction of the National Large Generator Standardization Technical Committee (SAC/TC511).
This standard was drafted. Harbin Electric Machinery Co., Ltd., Harbin Institute of Electrical Machinery, North China Electric Power Research Institute
Ren, Shanghai Electric Power Equipment Co., Ltd. Shanghai Generator Factory, Shandong Qilu Motor Manufacturing Co., Ltd., Dongfang Electric Group Dongfang Electric
Machinery Co., Ltd., Nanjing Steam Turbine Motor (Group) Co., Ltd., State Grid Hubei Electric Power Company Electric Power Research Institute, Beijing Beizhong Steam Turbine
Motor Co., Ltd., China Guangdong Nuclear Power Engineering Co., Ltd., China Electric Power Complete Equipment Co., Ltd., China Datang Corporation, Huadian Power
Northeast Institute of the Institute of Research, Guangdong Yudean Group Co., Ltd.
The main drafters of this standard. Jiao Xiaoxia, Shen Liangwei, Bai Yamin, Sun Yutian, Wang Tingshan, Zhang Zhonghai, Wang Zhengyuan, Wang Jinsong, Jiang Xinglin,
Gazelle, Li Qing, Li Yubin, Zhuge Wenbing, Sun Weiben, Wang Jianjun, Fu Changhong, Ye Guohua.
The previous versions of the standards replaced by this standard are.
---GB/T 7064-1986, GB/T 7064-1996, GB/T 7064-2002, GB/T 7064-2008.
Hidden pole synchronous generator technical requirements
1 Scope
This standard specifies the general requirements for a hidden-pole synchronous generator (or camera), air-cooled, hydrogen-cooled or liquid-cooled generators (or camera).
Special requirements for gas turbine generators and hidden-pole synchronous generators for nuclear power, and synchronous generators (or cameras) with hydrogen as a cooling medium
Matters needing attention. including the auxiliary equipment required for the operation of the generator (or camera), the area where hydrogen in the plant may accumulate.
This standard applies to three-phase 2-pole or 4-pole hidden-pole synchronous generators with a capacity greater than 10MVA and a three-phase hidden-pole synchronous camera.
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 755 rotary motor rating and performance
GB/T 1029 three-phase synchronous motor test method
GB 3836 (all parts) Explosive environment
GB/T 6075.1 Mechanical vibrations - Measurement of vibrations of machines - Part 1 . General
GB/T 6075.2 Mechanical vibrations - Evaluation of vibrations of machines on non-rotating parts - Part 2. Power 50 MW or more,
Land-mounted turbines and generators rated at 1500r/min, 1800r/min, 3000r/min, 3600r/min
GB/T 10069.1 Determination of noise and noise - Part 1
GB/T 11021 Electrical insulation heat resistance and representation
GB/T 11348.1 Measurement and evaluation of radial vibrations of rotating shafts - Part 1. General
GB/T 11348.2 Mechanical vibrations on the rotating shaft - Evaluation of vibrations of machines - Part 2. Powers greater than 50 MW
Turbine and generators installed at 1500r/min, 1800r/min, 3000r/min, 3600r/min for land installation
GB/T 20140 Hidden-pole synchronous generator stator winding end dynamic characteristics and vibration measurement method and evaluation
GB/T 20160 Rotating Motor Insulation Resistance Test
GB/T 20835 Generator Stator Core Magnetization Test Guide
GB /Z 29626 Turbine Generator Status Online Monitoring System Application Guide
GB 50150 Electrical installation engineering electrical equipment handover test standard
DL/T 596 Power Equipment Preventive Test Procedure
Technical requirements for DL/T 651 hydrogen cooled generator hydrogen humidity
DL/T 705 Quality Standard for Sealing Oils for Hydrogen-Cooled Generators in Operation
JB/T 6204 high voltage AC motor stator coil and winding insulation withstand voltage test specification
JB/T 6227 Hydrogen-cooled motor hermeticity test method and evaluation
JB/T 6228 Turbine Generator Winding Internal Water System Inspection Method and Assessment
JB/T 6229 hidden pole synchronous generator rotor gas internal cooling air passage inspection method and limit
JB/T 7608 measuring dielectric loss tangent test method and limit value of high voltage AC motor coil
JB/T 7784 Turbine Synchronous Generator AC Exciter Technical Conditions
JB/T 8446 hidden pole synchronous generator rotor turn-to-turn short circuit determination method
JB/T 8991 Generator Tin Weld Head Inspection Method
JB/T 10392 Turbine Generator Stator Base, Core Dynamic Characteristics and Vibration Test Method and Evaluation
JB/T 10499 Turbine Generator Design and Application Guidelines for Abnormal Operating Conditions
IEC 60034-1-2010 Rotating electrical machines - Part 1. Ratings and performance (Rotating electrical machines - Part 1
Ratingandperformance)
IEC 60034-3 (All parts) Rotating electrical machines - Part 3. Synchronous generators and s
Camera technical requirements (Rotatingelectricalmachines-Part 3. Specificrequirementsforsynchronousgenerators
Drivenbysteamturbinesorcombustiongasturbinesandforsynchronouscompensators)
3 Terms and definitions
The following terms and definitions as defined in GB/T 755 and IEC 60034-3 apply to this document.
3.1
Synchronous generator synchronousgenerator
A large hidden-pole synchronous motor driven by a steam turbine or gas turbine that converts mechanical energy into electrical energy and sends it to the grid.
Note. The synchronous generator here is only applicable to this standard.
3.2
Synchronous camera synchronouscompensator
Connected to the grid, does not pass the shafting for electromechanical energy conversion, only transmits or absorbs reactive power to the grid by changing the excitation current
The rate of a large hidden pole synchronous motor.
Note. The sync camera here is only for this standard.
3.3
Mechanical start mechanicalstart
The process in which the rotor speed is increased from zero or low speed (usually the crank speed) to the rated speed.
3.4
Car turning operation turninggearoperation
A low-speed rotation that maintains the prime mover and the synchronous generator (or camera) rotor thermally balanced to avoid poor bending of the rotor.
4 General requirements
4.1 General
Unless otherwise specified in this standard, synchronous generators driven by steam turbines or gas turbines, and synchronous cameras shall comply with GB/T 755.
This standard should be used as the basis for agreement between the supplier and the acquirer. If there are special requirements for specific products, it may be separately provided by the supplier and the buyer.
Agreed.
4.2 rated condition
4.2.1 Synchronous generator
The rated operating conditions of the generator are given by the following relevant data.
a) apparent power;
b) frequency;
c) voltage;
d) power factor;
e) primary cooling medium temperature (40 ° C, unless otherwise specified);
f) excitation voltage and excitation current;
Sometimes it also includes.
g) the altitude of the site;
h) hydrogen pressure;
i) For the purity range of hydrogen, see GB/T 755.
4.2.2 Synchronous camera
In addition to the apparent power and power factor, the rated condition of the camera is basically the same as that of the generator.
The rated apparent power is the maximum reactive output at rated voltage when the motor is over-excited, and a small amount of active power fed into the camera.
power.
The rated power factor is close to zero, mainly reflecting the maximum reactive power and loss compensated by the grid.
The range of the camera's reactive output can be determined by negotiation.
Note. The generator current (or camera) excitation current is regulated by reactive power. The rated excitation current and rated excitation voltage of the generator (or camera)
The rated condition of the generator (or camera).
4.3 Rated voltage
The rated voltage is determined by negotiation between the supplier and the buyer.
4.4 Power factor
The power factor is determined by negotiation between the supplier and the buyer. The standard rated power factor at the motor outlet is overexcited 0.8, 0.85 and 0.9.
Note 1. Other values can also be agreed upon. The lower the power factor, the larger the motor size.
Note 2. The rated power factor is the reactive power requirement when the over-excitation state at rated power is reflected.
Note 3. The generator design can take into account the ability to operate with rated power (MW) at a power factor of 0.95 (underexcited).
Because the grid compensates for the loss of the motor, the power factor of the synchronous camera may deviate from zero.
4.5 rated speed
For motors with a rated frequency of 50 Hz, the rated speed is 1500 r/min or 3000 r/min; for a rated frequency of 60 Hz
The machine is rated at 1800r/min or 3600r/min.
4.6 Voltage and frequency range
Synchronous generator (or camera) when the voltage deviation is ±5% under the rated power factor and the frequency deviation is ±2% (as shown in the shaded part of Figure 1)
Show), should be able to run continuously rated.
Table C.3 and Table C.4 temperature rise limits in Appendix C, or Table C.5 temperature limits, apply only to rated voltage and rated frequency.
If the operation needs to further expand the deviation range of voltage and frequency or the deviation from the nominal point, it should be negotiated between the supplier and the buyer.
Note 1. As the operating point deviates from the voltage and frequency ratings, the temperature rise or temperature will gradually increase. If the generator has a rated load on the boundary of the shaded part
Line, temperature rise or temperature increase of about 10K. If the generator has a rated power factor, voltage ± 5%, frequency 3-5%, as shown in the dotted line boundary shown in Figure 1,
The temperature rise will increase further, so to avoid the shortening of the service life of the generator due to temperature or temperature rise, the duration of operation outside the shaded area and
The frequency of occurrence should be limited and immediate corrective actions such as reduced output should be taken.
Note 2. It is unlikely that overvoltage and low frequency or low voltage and high frequency will occur simultaneously. The former will increase the temperature rise of the field winding. In the two cases shown in Figure 1.
The synchronous generator (or camera) and its transformer over-excitation or under-excitation are limited to within 5% of the operating quadrant. Excitation and under certain conditions
The margin of stability will decrease. When the operating frequency deviates from the nominal point, factors other than the generator become important and need to be considered. Such as steam turbine manufacturing
The plant will specify the allowable frequency deviation range and corresponding operating time, and the ability of the auxiliary machine to withstand overvoltage and high frequency should also be considered.
Note 3. During the phase induction test, the generator terminal voltage can be reduced to 92% in a short time.
Figure 1 Voltage and frequency limits
4.7 Direction of rotation and phase sequence
The direction of rotation (clockwise or counterclockwise) depends on the direction the reference end looks at the motor.
The reference end of the synchronous generator is the drive end. If there are two drive ends, the power end is the reference end in the direction of rotation.
The reference end of the synchronous camera is the opposite end of the excitation end.
Unless otherwise agreed, the direction of motor rotation should be clockwise from the reference end to the motor.
The direction of rotation should be marked on the motor or on the nameplate, and the time of the terminal voltage of the stator is represented by the letters U, V, W on the outlet end.
Order, U2, V2, W2 represent the phase tail.
The phase sequence of the synchronous generator (or camera) should be consistent with the phase sequence of the grid to be incorporated.
Note. The identification of the outlet end can be inconsistent with GB/T 1971.
4.8 Stator winding connection, output voltage
Unless otherwise specified, the stator windings are generally Y-shaped. The outlet end should be led to the outside of the frame, and the outlet layout should be confirmed with the purchaser.
The output voltage is defined as the stator winding line voltage.
4.9 Motor insulation
4.9.1 Insulation system, heat resistance grade
The insulation system consists of the insulation of the conductor insulation and the winding slots, the necessary distance to maintain the necessary distance, the end winding support and the insulation required for the connection.
Combination.
The insulation system shall be classified according to GB/T 11021 and the heat classification shall be 130 °C (Class B) or above.
The insulation system of the stator winding and the field winding shall have the ability to withstand the rated voltage for a long time. "Winding" includes coils and coils and out
All electrical connections between the line terminals.
Note. Refer to GB/T 17948.6 for insulation durability test.
4.9.2 Insulation resistance
4.9.2.1 Insulation resistance of stator winding to ground and phase
When the stator winding is at 40 °C, its insulation resistance to ground and phase should not be lower than the minimum recommended value of GB/T 20160.
R1min is 100 MΩ.
4.9.2.2 Polarization index R10min/R1min minimum recommended value
R10min/R1min≥2 (1)
In the formula.
Insulation resistance at R10min---10min;
Insulation resistance at R1min --1min.
When R1min >5000MΩ, the polarization index cannot fully reflect the insulation state and should not be used as an evaluation requirement.
See GB/T 20160 for insulation resistance and polarization index measurement methods.
4.9.2.3 Insulation resistance of the field winding
Insulation resistance of the field winding (excited winding directly cooled by water is measured before the insulated inlet pipe is installed), not small in the cold state (25 ° C)
At 1MΩ. The excitation winding directly cooled by water shall have an insulation resistance of not less than 2 kΩ in the cold state (25 ° C) after the installation of the insulated water conduit.
4.9.2.4 Insulation resistance of the stator embedded thermometer
When measuring with a 250V megohmmeter in a cold state (25 ° C), the insulation resistance of the thermometer embedded in the stator should be not less than 1 MΩ.
4.9.2.5 Bearing insulation
Synchronous generator (or camera) excitation end bearing, exciter bearing or collector ring bearing between the bottom plate and the oil pipe, between the oil seal and the oil pipe,
Double insulation should be used between the inlet support and the bottom plate. When measured with a 1000V megger, the insulation resistance should be no less than 1MΩ.
4.9.3 Withstand voltage test
See the JB/T 6204 for the withstand voltage test method.
Before the AC withstand voltage test, the stator winding should be subjected to 3.5 UN in the manufacturing plant for 1 min DC withstand voltage test. Rated voltage
The 3.0UN DC withstand voltage test was performed for 24kV and above, and lasted for 1min.
The AC power frequency withstand voltage test lasted for 1 min and the test voltage was in accordance with Table C.1.
4.9.4 Corona test
The stator bar should not faint at 1.5 times the rated line voltage; the whole machine should be ignorant at the end of the stator winding at 1.0 times the rated line voltage.
Significant halo and continuous golden highlights.
4.9.5 High-voltage motor coil dielectric loss angle test method and limit
According to the provisions of JB/T 7608.
4.10 Prevention of shaft current
Appropriate measures should be taken to prevent harmful shaft currents and to ground the shaft well.
The synchronous generator (or camera) should be able to detect the resistance to ground insulation during operation.
Pulse shaft voltage caused by controlled rectification static excitation may cause oil film breakdown and damage bearing babbitt alloy, which should be effectively prevented.
The cause should be ascertained when the shaft voltage is greater than 20V.
4.11 Overspeed test
The rotor shall be subjected to an overspeed test at 1.2 times the rated speed for 2 minutes.
Note. The purpose of the overspeed test is to assess the mechanical integrity of the rotor and not to determine the operational capability of the motor. Whether the synchronous generator (or camera) in operation can bear
The ability to be subject to overspeed and frequency changes depends on the design of the motor, and the design is fully considered for various overspeed conditions of operation, such as sudden full operation during normal operation.
Rate overspeed caused by load shedding.
Any special needs must be determined in consultation with the manufacturer.
4.12 critical speed
In the frequency range specified in 4.6 or otherwise agreed, the unit shaft system shall not affect the synchronous generator due to the bad vibration caused by the critical speed.
(or adjust the camera) for safe operation.
4.13 output chart
The manufacturer shall provide a motor output diagram indicating the operating limits limited by temperature or temperature rise or by static stability. The figure is in the amount
Draw under constant voltage, rated frequency, and rated hydrogen pressure (if hydrogen cooling).
Figure 2 shows a typical output diagram. Its boundaries are limited by the following factors.
--- Curve A, indicating that the excitation current is running at the rated excitation current, and the temperature rise of the excitation winding is nearly constant;
--- Curve B, indicating that the stator winding temperature rise is nearly constant when operating at rated stator current;
--- Curve C, represents the limit of local heating by the stator end or by static stability or both.
In the case of agreement between the supplier and the demander, it is also possible to reduce the cooling temperature and exceed the rated voltage within the voltage range specified in 4.6.
A force diagram other than hydrogen pressure.
Synchronous camera does not have PQ requirements. If a generator with PQ output is used as a synchronous camera, the curve in the output chart
The range between the intersection of A and curve C and...
|