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DL/T 2024-2019: Guide for type test for large synchronous compensator
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Guide for type test for large synchronous compensator
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Basic data | Standard ID | DL/T 2024-2019 (DL/T2024-2019) | | Description (Translated English) | Guide for type test for large synchronous compensator | | Sector / Industry | Electricity & Power Industry Standard (Recommended) | | Classification of Chinese Standard | K20 | | Classification of International Standard | 29.160.99 | | Word Count Estimation | 13,117 | | Date of Issue | 2019-06-04 | | Date of Implementation | 2019-10-01 | | Quoted Standard | GB/T 1029; GB/T 7064; GB/T 10069.1; GB/T 10069.3; GB/T 11348.2; GB/T 20140; GB/T 20160; GB/T 20835; DL/T 298; DL/T 1525; DL/T 1612; JB/T 6204; JB/T 6229; JB/T 10392; IEC 60034-4 | | Issuing agency(ies) | National Energy Administration | | Summary | This standard specifies the items, contents and requirements for the type test of large-scale video cameras. This standard is applicable to the 100Mvar and above tuners, and the 100Mvar and below tuners can be implemented by reference. | DL/T 2024-2019: Guide for type test for large synchronous compensator---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.
Guide for type test for large synchronous compensator
ICS 29.160.99
K 20
Record number. 63143-2018
People's Republic of China Electric Power Industry Standard
Guidelines for Type Test of Large-scale Cameras
2019-06-04 released
2019-10-01 implementation
Issued by National Energy Administration
Table of contents
Preface...II
1 Scope... 1
2 Normative Reference Documents... 1
3 Terms and Definitions... 1
4 General Provisions... 2
5 Test preparations... 2
6 Test items, content and requirements... 2
7 Test report... 8
Appendix A (informative appendix) Type test items for large-scale cameras... 10
Foreword
This standard is in accordance with the rules given in GB/T 1.1-2009 "Guidelines for Standardization Work Part 1.Standard Structure and Compilation"
Drafting.
This standard was proposed by the China Electricity Council.
This standard is under the jurisdiction of the Electric Power Industry Standardization Technical Committee (DL/T C09).
The appendices in this standard are all informative.
The organization responsible for drafting this standard. State Grid Hubei Electric Power Co., Ltd. Electric Power Research Institute, State Grid Hubei Electric Power Co., Ltd.
The company, Shanghai Electric Power Plant Equipment Co., Ltd. Shanghai Generator Factory, Dongfang Electric Co., Ltd., Harbin Electric Factory Co., Ltd.
Ren company, State Grid Shandong Electric Power Company Electric Power Research Institute, Jiangsu Fangtian Power Technology Co., Ltd., State Grid Co., Ltd.
The company's operating branch, the State Grid Co., Ltd. DC Construction Branch, North China Electric Power Research Institute Co., Ltd.,
State Grid Hunan Electric Power Research Institute, Hubei Fangyuan Dongli Electric Power Research Co., Ltd.
The main drafters of this standard. Cui Yibo, Cai Wanli, Ling Zaixun, Tao Qian, Shu Wuqing, Wang Yong, Wang Yanbin, Cao Zhiwei,
Wang Chengliang, Shan Huaping, You Shaohua, Guo Yibing, Ruan Ling, Feudal Bao, Leiyu, Zhang Jie, Ren Zhangao, Dong Liang, Chen Wen, Cheng
Cheng, You Li, Guo Yu
This standard is issued for the first time.
The opinions or suggestions during the implementation of this standard are fed back to the Standardization Management Center of the China Electricity Council (Beijing)
No. 1 Ertiao, Baiguang Road, 100761).
Guidelines for Type Test of Large-scale Cameras
A range
This standard specifies the items, content and requirements for type testing of large-scale cameras.
This standard is applicable to cameras of 100Mvar and above. For cameras below 100Mvar, it can be implemented by reference.
B Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version
Applies to this document. For undated references, the latest version (including all amendments) applies to this document.
IEC 60034-4 Rotating Electrical Machines Part 4 Test Methods for Measuring Parameters of Synchronous Electrical Machines
GB/T 1029 Three-phase synchronous motor test method
GB/T 7064 Technical requirements for hidden pole synchronous generators
GB/T 10069.1 Rotating Machine Noise Measurement Method and Limits Part 1.Rotating Machine Noise Measurement Method
GB/T 10069.3 Rotating Machine Noise Measurement Method and Limits Part 3.Noise Limits
GB/T 11348.2 Mechanical vibration measurement and evaluation of machine vibration on rotating shaft Part 2.Power greater than 50MW,
Rated working speed 1500 r/min, 1800 r/min, 3000 r/min, 3600 r/min Land-mounted steam turbines and generators
GB/T.20140 The dynamic characteristics and vibration measurement method and evaluation of the stator winding end of the hidden pole synchronous generator
GB/T.20160 Rotating motor insulation resistance test
GB/T 20835 Generator stator core magnetization test guide
DL/T 298 Guidelines for Detection and Evaluation of Corona at the End of Generator Stator Winding
DL/T 1525 Fault Diagnosis Guide for Interturn Short Circuit of Rotor of Salient Pole Synchronous Generator
DL/T 1612 Generator stator winding hand bag insulation applied DC voltage measurement method and evaluation guide
JB/T 6204 High voltage AC motor stator coil and winding insulation withstand voltage test specification
JB/T 6229 Inspection method and limit value of internal cooling air passage of rotor gas in hidden pole synchronous generator
JB/T 10392 Turbine generator stator frame, core dynamic characteristics and vibration test method and evaluation
C Terms and definitions
The following terms and definitions apply to this standard.
Figure C.1
Synchronous compensator
A synchronous motor connected to the power grid does not convert mechanical energy through the shaft system, and uses the way to change the excitation current to the electric
The grid transmits or absorbs reactive power from the grid.
[GB/T 7064-2017, definition 3.2]
Figure C.2
Idle rotation
After the rotating equipment loses the motive force, it relies on inertia to rotate freely and decelerate.
D General
Figure D.1 Type test should be carried out in any of the following situations.
--When the new product is completed;
--When changes in design, materials or processes are sufficient to cause changes in certain properties;
--The result of the factory test has an inadmissible deviation from the result of the previous type test.
Figure D.2 The type test items of the large-scale dimming camera are shown in Appendix A, the special test items are shown in the informative appendix A.1, and the routine inspection test
See the informative appendix A.2 for the test items, and the routine inspection test should be completed before the special test items.
Figure D.3 After the test is completed and the equipment is disassembled, AC withstand voltage test, modal test of stator winding end, stator
Core magnetization test and other tests.
E Test preparation
Figure E.1 The tested camera and auxiliary equipment have been installed and meet the test requirements.
Figure E.2 A test operation instruction should be prepared, which includes test purpose, test items, test methods, test procedures,
Test conditions, precautions and safety measures.
Figure E.3 The accuracy of the electrical measuring instruments and meters used in Figure E.3 should not be less than class 0.5 (except for megohmmeters). When measuring temperature,
A thermometer with an error of ±1℃ is allowed.
F Test items, content and requirements
Figure F.1 Mechanical inspection at rated speed
The mechanical inspection requirements at rated speed are as follows.
a) Test conditions. The adjustment of the camera and the auxiliary equipment such as oil and water required for the test have been installed.
b) Test content. Adjust the camera to slowly increase the speed, the first rotation should not exceed the first-order critical speed, check all parts
There is no abnormality in vibration, temperature, and flow rate, and the speed will be increased to the rated speed after the monitored quantities are stabilized. Measured during the acceleration process
Speed and monitor vibration, record vibration value, bearing bush temperature, hot and cold air temperature, drive motor output at rated speed
Input power, etc.
c) Test requirements. Shaft vibration at rated speed (relative displacement peak-to-peak value), shaft vibration at any speed (phase
The peak-to-peak displacement, bearing temperature limit, and bearing oil temperature limit should all meet the technical requirements of GB/T 7064.
Figure F.2 Measurement of rotor moment of inertia
The requirements for the determination of the rotor moment of inertia are as follows.
a) Test conditions. The mechanical inspection at rated speed has been completed.
b) Test content. Drag the camera to the rated speed for stable operation, and record the loss of the drag motor. Continue to adjust the camera
Increase the speed to 1.05 times the rated speed, and then cut off the power supply of the drag motor to make the adjustment camera idle, refer to GB/T 1029
Calculate the moment of inertia. During the test, the time for the camera to idle from the highest speed to zero is also recorded.
Figure F.3 Mechanical consumption temperature rise and loss measurement
The requirements for temperature rise and loss determination of mechanical consumption are as follows.
a) Test conditions. Adjust the initial temperature and flow rate of the cooling medium to meet the design requirements.
b) Test content. Drag the camera to the rated speed, after the test starts, record the pressure,
Flow, temperature, vibration and electrician meter readings until the temperature change at the measuring point does not exceed 2K within 1h.
c) Test requirements. meet the design requirements.
Figure F.4 Short-circuit temperature rise test
The requirements of the short circuit temperature rise test are as follows.
a) Test conditions. Adjust the initial temperature and flow rate of the cooling medium to meet the design requirements. The stator winding is short-wired or copper
The row is reliably short-circuited and can withstand the maximum test current.
b) Test content. drag the camera to the rated speed for stable operation, and the short-circuit current at 1.0IN and 1.1IN respectively
Record the pressure, flow, temperature, vibration and electrical meter readings of each part every 30 minutes until the temperature at the measuring point
The degree change does not exceed 2K within 1h.
c) Test requirements. meet the design requirements.
Figure F.5 Short-circuit characteristics and short-circuit loss measurement
The requirements for short-circuit characteristics and short-circuit loss measurement are as follows.
a) Test conditions. Adjust the initial temperature and flow rate of the cooling medium to meet the design requirements. The stator winding is short-wired or copper
Reliable short circuit, short wiring or copper bar can withstand the steady-state short-circuit current above 1.2IN.
b) Test content. Drag the tuners to the rated speed, refer to GB/T 1029, and use the generator method to measure the tuners
Short circuit characteristics. During the test, record the voltage, current, and input power of the drag motor, adjust the three-phase stator current,
Excitation current. At the rated current, check the balance of the three-phase stator current and record the stator coil, rotor coil,
Cooling medium temperature.
c) Test requirements. short-circuit characteristics and short-circuit losses should meet the design requirements.
Figure F.6 No-load temperature rise
The requirements for no-load temperature rise are as follows.
a) Test conditions. Adjust the initial temperature and flow of the cooling medium to meet the design requirements, and the stator winding is open.
b) Test content. drag the camera to the rated speed and adjust the excitation current, respectively at 1.05UN and 1.1UN no-load
Under the stator voltage, the pressure, flow, temperature, vibration and electrical meter readings of each part are recorded every 30 minutes.
To stable.
c) Test requirements. The no-load temperature rise meets the design requirements.
Figure F.7 No-load characteristics and no-load loss measurement
The requirements for no-load characteristics and no-load loss measurement are as follows.
a) Test conditions. Adjust the initial temperature and flow of the cooling medium to meet the design requirements, and the stator winding is open.
b) Test content. Drag the tuners to the rated speed, refer to GB/T 1029, and use the generator method to measure the tuners
No-load characteristics. During the test, record the voltage, current, and input power of the drag motor, adjust the three-phase stator voltage,
Excitation current. Check the three-phase stator voltage balance at rated voltage, when the excitation current drops to 0, the measurement record
Sub-remanence voltage.
c) Test requirements. No-load characteristics and no-load losses meet the design requirements.
Figure F.8 Indirect method to calculate temperature rise and efficiency
The requirements for the indirect method to calculate temperature rise and efficiency are as follows.
a) Test conditions. Adjust the initial temperature and flow rate of the cooling medium to meet the design requirements.
b) Test content. respectively measure the rated speed to lower the camera idling, adjust the camera no-load 1.05UN, adjust the camera no-load 1.1UN,
Adjust the temperature rise of the camera under three-phase steady-state rated short-circuit, refer to IEC 60034-4 or GB/T 1029 to calculate the temperature rise and effect
rate.
c) Test requirements. temperature rise and efficiency meet the design and GB/T 7064 requirements.
Figure F.9 Measurement of shaft voltage
The requirements for shaft voltage measurement are as follows.
a) Test conditions. Adjust the initial temperature and flow of the cooling medium to meet the design requirements, and the stator three-phase winding is open.
b) Test content. drag the tuned camera to the rated speed, adjust the excitation current, and make the tuned camera stator output rated voltage,
Measure the voltage between the non-excitation end shaft and the excitation end shaft (U1) and the ground (U2) of the excitation end shaft.
c) Test requirements. U1≈U2, U1≤10V.
Figure F.10 Voltage waveform, full voltage harmonic distortion (THD) measurement
The requirements for the measurement of voltage waveform and full voltage harmonic distortion (THD) are as follows.
a) Test conditions. Adjust the initial temperature and flow of the cooling medium to meet the design requirements, and the stator three-phase winding is open.
b) Test content. drag the tuned camera to the rated speed, adjust the excitation current, and make the tuned camera stator output rated voltage,
Record the voltage waveform of the stator line of the adjuster, and calculate the total harmonic distortion of the adjuster.
c) Test requirements. THD≤5%.
Figure F.11 1.3 times short-term voltage increase test
1.3 The requirements for the short-time increase voltage test are as follows.
a) Test conditions. Adjust the initial temperature and flow of the cooling medium to meet the design requirements, and the stator three-phase winding is open.
b) Test content. Drag the dimming camera to the rated speed for stable operation, adjust the excitation current, and make the no-load stator voltage reach
To 1.3 times the rated value within 1 min, quickly reduce the excitation current to zero.
c) Test requirements. no flashover at the end and back of the core.
Figure F.12 Vibration measurement of stator winding, frame and core
The requirements for vibration measurement of stator windings, frame and core are as follows.
a) Test conditions. at the end of the stator winding, the top of the circumference of the stator frame, the level of the circumference, the four corners of the base, and the core
Sufficient vibration measuring points have been installed on the back and other parts. Refer to GB/T.20140 and JB/T 10392 for the position of the measuring points.
b) Test content. Record the data of each vibration measurement point of the stator winding, frame and iron core under rated no-load conditions.
c) Test requirements. The peak-to-peak displacement peak-to-peak value of the stator frame frequency doubled vibration is less than 15μm, and the peak-to-peak value of the stator core frequency doubled vibration displacement peak-
The peak value is less than 50μm, and the peak-to-peak value of the frequency doubled vibration displacement of the stator winding end is less than 100μm.
Figure F.13 Noise measurement
The requirements for noise measurement are as follows.
a) Test conditions. When the initial temperature and flow rate of the cooling medium of the camera meet the design requirements, and the test conditions in the factory are limited,
This test can be carried out on site.
b) Test content. Refer to GB/T 10069.1, GB/T 10069.3, measure the no-load rated voltage at rated speed
Adjust camera noise.
c) Test requirements. The sound pressure level does not exceed 85dB (A).
Figure F.14 Determination of protective ladder reactance Xp
The requirements for the determination of the protective ladder reactance Xp are as follows.
a) Test conditions. The rotor of the camera is not installed.
b) Test content. Three-phase symmetrical low-voltage alternating current is applied to the stator winding, and the stator voltage, current and power are recorded (record
Take the average of three points). Refer to GB/T 1029 to calculate the protective ladder reactance value.
c) Test requirements. meet the design requirements.
Figure F.15 Phase sequence check
The requirements for phase sequence inspection are as follows.
a) Test conditions. When the test is carried out after the rotor is installed, the initial temperature and flow rate of the cooling medium of the camera should meet the design
Claim.
b) Test content.
1) When checking the phase sequence when the rotor is not installed in the adjustment mode, a modular stator rotor is set in the stator stator, and the stator winding is
The phase sequence is input to the three-phase low-voltage AC power source. If the direction of rotation is the same as that of the rotor, the phase sequence is correct.
2) After the final assembly is completed, the phase sequence check is performed. After the no-load characteristic test is completed, the excitation current is reduced to 0
Hold the rated speed, measure the voltage of the stator, and check the phase sequence of the adjustment camera.
c) Test requirements. the same as the design.
Figure F.16 Straight axis synchronous reactance Xd
The measurement requirements of the direct axis synchronous reactance Xd are as follows.
a) Test content. Complete the measurement of the no-load characteristics and short-circuit characteristics of the adjustment camera, refer to GB/T 1029, according to the adjustment
Load characteristic curve and three-phase steady-state short-circuit characteristic curve, calculate the unsaturation value of direct-axis synchronous reactance.
b) Test requirements. meet the design requirements.
Figure F.17 Short circuit ratio (SCR)
The measurement requirements of the short circuit ratio (SCR) are as follows.
a) Test content. complete the measurement of the no-load characteristics and short-circuit characteristics of the camera, and calculate the short-circuit ratio from the no-load-short-circuit characteristic curve
SCR, SCR=If0/Ifk, where If0 is the excitation current at rated no-load voltage, and Ifk is the rated short-circuit current
Excitation current.
b) Test requirements. meet technical specifications and design requirements.
Figure F.18 Negative sequence reactance X2
The measurement requirements of negative sequence reactance X2 are as follows.
a) Test conditions. Adjust the initial temperature and flow rate of the cooling medium to meet the design requirements, and the two phases of the stator winding are short-connected
Reliable short circuit, the short circuit can withstand the test short circuit current requirements.
b) Test content. drag the tuned camera to the rated speed for stable operation, adjust the excitation current to maintain the stator short-circuit current
10%～15% of rated stator current. Refer to GB/T 1029, measure and record the un-shorted phase and short-circuited phase of the stator several times
Calculate the negative sequence reactance between voltage, short-circuit current, and corresponding power value. The test process should be rapid and monitor phase modulation
Changes in the vibration measurement values of the machine. After reading the meter each time, reduce the excitation current to zero before proceeding to the next test.
c) Test requirements. meet technical specifications and design requirements.
Figure F.19 Zero sequence reactance X0
The measurement requirements of the zero sequence reactance X0 are as follows.
a) Test conditions. Adjust the initial temperature and flow rate of the cooling medium to meet the design requirements, and the two phases of the stator winding are short-connected
Reliably short-circuit and connect to the neutral point, and the short-circuit can withstand the test short-circuit current.
b) Test content. Drag the adjusting camera to the rated speed for stable operation, and adjust the excitation current so that the stator short-circuit current is
10%～20% rated current. Refer to GB/T 1029, measure and record the stator disconnection phase and neutral point voltage,
The current between the short-circuit phase and the neutral point and the corresponding power value are used to calculate the zero sequence reactance. The test process should be rapid and monitored
Adjust the changes of each vibration measurement value of the camera. After reading the meter each time, reduce the magnetic field current to zero, and then proceed to the next time
test.
c) Test requirements. meet technical specifications and design requirements.
Figure F.20 Determination of Xd´, Xd´´, Td´, Td´´, Ta
The determination requirements of Xd´, Xd´´, Td´, Td´´ and Ta are as follows.
a) Test conditions. Adjust the initial temperature and flow of the cooling medium to meet the design requirements, and the stator winding is short-circuited by the short-circuit switch.
When connected, the short-circuit switch meets the requirements of the closeness of the switch, and the short-circuit test is reliably fixed when the cable is connected. Respond to measurement
The road adopts anti-interference measures.
b) Test content. drag the tuned camera to the rated speed for stable operation, adjust the excitation current to make the stator voltage 1/3UN
Rated terminal voltage. Close the short-circuit switch and record the three-phase current, stator voltage, and excitation of the stator during a sudden short circuit
Current waveform, steady-state short-circuit current after sudden short-circuit, refer to IEC 60034-4 or GB/T 1029 for calculation and adjustment
The parameters. The short-circuit current waveform should be calibrated by the steady-state short-circuit current value measured by the stator CT.
c) Test requirements. meet the technical specifications and design requirements, and the tolerance does not exceed ±15% of the design value.
Figure F.21 Transient open circuit time constant of direct axis Td0´
The measurement requirements of the direct axis transient open circuit time constant Td0´ are as follows.
a) Test conditions. Adjust the initial temperature and flow of the cooling medium to meet the design requirements, and the stator winding is open.
b) Test content. Drag the camera to the rated speed for stable operation, refer to IEC 60034-4 or GB/T 1029 for adjustment
Reduce the excitation current, make the stator no-load voltage the rated value, take the stator voltage waveform, and record the voltage and excitation
Current reading, rotor winding temperature. Short-circuit the rotor winding, record the stator voltage waveform, calculate the initial stator voltage
The time required for the rated value to decay to 0.368 times the initial value.
c) Test requirements. meet technical specifications and design requirements.
Figure F.22 Determination of quadrature axis synchronous reactance Xq
The measurement requirements of quadrature axis synchronous reactance Xq are as follows.
a) Test conditions. Adjust the initial temperature and flow rate of the cooling medium to meet the design requirements.
b) Test content.
1 Refer to IEC 60034- or 4 GB/T
Use low slip method. Short-circuit the excitation winding, drag the camera to the rated speed, and then set it at 1029
A three-phase symmetrical voltage of 0.01UN～0.2UN of rated frequency is applied to the sub-winding, and the phase sequence of the applied voltage should be
The direction of rotation is the same as that of the rotor.
2 Disconnect the excitation winding and adjust the speed of the motor to make the slip rate of the adjuster less than 1% after the slip rate stabilizes
Use the wave device to record and adjust the camera’s electrical voltage, electrical current, current collection waveform and slip rate,
Calculate quadrature axis reactance.
Note. This test is not required for hidden-pole synchronous adjustment cameras.
c) Test requirements. meet technical specifications and design requirements.
Figure F.23 Measurement of AC impedance of rotor in bore
The measurement requirements for the AC impedance of the rotor in the stator are as follows.
a) Test conditions. Adjust the initial temperature and flow of the cooling medium to meet the design requirements, open the stator winding, and exte...
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