CN1402413A - Electric machine stator wire bar multifactor ageing device and method - Google Patents
Electric machine stator wire bar multifactor ageing device and method Download PDFInfo
- Publication number
- CN1402413A CN1402413A CN 02139423 CN02139423A CN1402413A CN 1402413 A CN1402413 A CN 1402413A CN 02139423 CN02139423 CN 02139423 CN 02139423 A CN02139423 A CN 02139423A CN 1402413 A CN1402413 A CN 1402413A
- Authority
- CN
- China
- Prior art keywords
- aging
- heating
- sample
- stress
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Manufacture Of Motors, Generators (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invented aging device and aging method for investigating the aging rule, the life test and quality analysis of the insulation of the stator wire bar. The invented device can apply the aging stresses of the electricity, heat, mechanism as well as the thermal and mechanical stress to the wire bar tested so as to simulate the aging process of the sample of the stator wire bar without damaging the sample. The transformer provided the electric aging factor. The heating plate provides the thermal aging factor. The temperature control device controls the thermal aging temperature. The vibration generator provides the vibration stress. Adjusting the output waveform of the signal generator can change the mode of the vibration. The heating and cooling cycles can be scheduled. Thus, the four aging stresses can be combined in order to meet different aging requirement.
Description
One, affiliated technical field
The invention belongs to technical field of motors, relate to a kind of method and device of accelerated aging test, particularly a kind of stator winding conductor bars in electrical machines multi-stress aging device and aging method thereof.
Two, background technology
It is one of important method of research stator bar ageing of insulation rule and assessment insulation residual life that the motor lines rod is carried out the multiple-factor accelerated ageing, one of program of examining the quality of the production when also being new product development.Be 20 years the designed life of general motor lines rod, so in order to study the aging rule of stator bar insulation, must carry out accelerated aging test to the motor lines rod.Tentatively carried out at present both at home and abroad the insulation accelerated aging experimental study work of stator bar, for the ageing state diagnosis and the life appraisal of stator insulation provides theoretical direction and experimental data.But the aging mode that generally adopts at present all is single-factor or the accelerated ageing of double factor order both at home and abroad, owing in ageing oven, carry out heat ageing, be difficult to apply several aging stress simultaneously and wear out, and be subjected to the restriction of ageing oven size large-sized line rod sample that can't wear out.Existing aging method is not considered the synergy between the various aging factors, the real ageing process that can not model stator insulate, and need long ageing time, expend huge manpower and financial resources.
Because large-size machine will be subjected to the synergy of electricity, heat, machinery and hot machine stress simultaneously in the process of operation, so generally all quicken the aging of stator bar insulation by strengthening these four kinds of aging factors.Owing to apply multiple aging factor simultaneously to the having relatively high expectations of aging equipment, and require four kinds of aging factors to be independent of each other, also do not carry out the research work of this respect both at home and abroad.The aging method that generally adopts both at home and abroad is that single-factor accelerated ageing or double factor are aging in proper order at present.Single-factor is aging to be exactly only to apply a kind of aging stress to wear out, and does not consider other aging stress; Double factor is aging in proper order to be exactly to apply a kind of aging factor earlier to wear out, and it is aging then to apply another aging factor, and circulation repeatedly finishes up to aging.No matter be that single-factor is aging or double factor is aging in proper order, owing to do not consider the synergy between the multiple aging factor, so there is certain difference in the ageing process during with the motor actual motion, this collaborative destruction is the aging main causes of motor lines rod stator insulation than violent mostly of monofactorial destruction.So present aging method and device all can not the real ageing processes of simulated machine bar insulation, can not obtain real aging rule of stator insulation and conclusion.
Three, Fa Ming content
Defective or deficiency at above-mentioned prior art existence, the objective of the invention is to, a kind of ageing process of simulated machine stator bar that can be authentic and valid is provided, wearing out of acceleration line rod sample, the aging rule of research motor lines rod, the residual life of prediction stator insulation, whether check motor lines rod satisfies stator winding conductor bars in electrical machines multi-stress aging device and the aging method thereof that relevant criterion requires.
To achieve these goals, the technical solution used in the present invention is that this stator winding conductor bars in electrical machines multi-stress aging device comprises:
One multi-stress aging platform base 15, one provides electricity aging required high-tension step-up transformer 1 for sample 2 to be aging, one temperature controller 3, one heating plate 4, one current vortex sensor 5, one detector for displacement measuring 6, one sensor probe 7, one acceleration transducer 8, one charge amplifier 9, one oscilloscope 10, one electromagnetic exciter 11, one power amplifier 12, one signal generator 13, one heating power supply control cubicle 14, fixing and the bracing frame 16 of sample, heating plate fixed support 17, vibration generator crane 18 and thermocouple 19 constitute;
The table top of multi-stress aging platform base 15 is bar construction corrosion resistant plates of cement casting, and it is provided with sample fixing and bracing frame 16 and heating plate fixed support 17, and can be on the guide groove of base plate 15 slidable adjustment, to adapt to different specimen lengths and width; Sample 2 to be aging is fixed on the fixing and bracing frame 16 of sample, and by sensor probe 7, current vortex sensor 5, detector for displacement measuring 6 its vibration parameters of monitoring; Heating plate 4 is fixed on the heating plate fixed support 17, and heating plate 4 up and down constitutes a heating cavity, and the heating tube of heating plate 4 inside is as heating source, by electrical power control cabinet 14 power supplies; Heating plate 4 is provided with thermocouple 19, and thermocouple 19 also is connected with heating power supply control cubicle 14 by temperature controller 3;
Also be provided with electromagnetic exciter 11 on the multi-stress aging platform base 15, electromagnetic exciter 11 is supported by vibration generator crane 18, electromagnetic exciter 11 is connected with power amplifier 12 and signal generator 13 in turn, and electromagnetic exciter 11 also is communicated with acceleration transducer 8, charge amplifier 9, oscilloscope 10;
Step-up transformer 1 is connected and applies the aging required voltage of electricity on the sample 2 to be aging during use.
Described step-up transformer 1 applies voltage range 0～100kV; And have automatic safety device and time set, and can when applying voltage, write down ageing time automatically, stop to write down ageing time during outage automatically; When the sliding sudden strain of a muscle in surface takes place or punctures in sample in ageing process, the transformer automatic trip, and stop to write down ageing time automatically.
A kind of aging method of realizing stator winding conductor bars in electrical machines multi-stress aging device, carry out in the following manner:
1) when carrying out multi-stress aging, the output voltage of step-up transformer is adjusted to aging required voltage, high-voltage line is connected on the strand of line rod the high-field electrode when aging, online excellent insulating surface is pasted the aluminium foil electrode as ground electrode with the high temperature silicone grease, the end coated anticorona coating of line rod prevents to take place when voltage from raising the sliding sudden strain of a muscle in end, guarantees that the line rod can carry out long-term ageing; Line rod surface-coated low-resistance varnish to reduce the contact resistance of line rod surface and aluminium foil, guarantees discharge off between excellent surface of long-term ageing process center line and the aluminium foil and the insulation parameter of monitoring sample in the ageing process exactly.
2) by the heating tube that is evenly distributed in the heating plate sample is heated, electrical power control cabinet provides heating power supply, can increase or reduce the quantity of heating tube, 300 ℃ of the highest aging temperatures of system according to aging requirement;
3) heating cavity of heating plate formation coats one deck insulation material and is used for keeping the interior heat ageing temperature of cavity;
4) adopt thermocouple to be used for measuring temperature in the heating cavity, temperature controller is used for controlling the temperature in the heating chamber, when temperature reaches the temperature of setting, adds thermal relay in the deenergization control cubicle, stops heating; When temperature was lower than the temperature of setting, temperature controller control heating relay closes began heating, can keep temperature-resistant in the heating chamber like this;
5) mechanical stress produces by vibration generator, by the way of output of conditioning signal generator and the gain of power amplifier, can control the size of exciting force and the size of vibration acceleration, adopt the size of detector for displacement measuring monitors vibration displacement, oscilloscope is used for the size of monitors vibration acceleration; The excursion of exciting force is 0～500N, and amplitude 800～5000 μ m can select different exciting force and amplitude size according to different aging samples;
6) by changing the output signal mode of signal generator, can change the mode of output exciting force, as sine wave, square wave, triangular wave etc.;
7) by to line rod sample heating and cooling simulate the hot machine stress that cold cycling produces, promptly control heating and cooling speed by time closing and cut-out heating power supply, each cycle is finished heating and cooling circulation, can set the cycle of cold cycling as required, also can carry out cold cycling in certain temperature range;
8) when carrying out multi-stress aging, electricity, heat and mechanical stress are applied on the sample line rod simultaneously, and regularly thermal and mechanical stress is simulated in heating and cooling simultaneously, realize that like this four factors are aging simultaneously.
The present invention can carry out the multiple-factor accelerated ageing of electricity, heat, mechanical oscillation and the hot machine stress of motor lines rod.Be the agine mechaism and the rule of research stator insulation, and the performance test of carrying out new product provides good aging method.According to the multi-stress aging requirement, can carry out four factors and wear out simultaneously, or any combinations of factors ageing test.
Four, description of drawings
Fig. 1 is a multi-stress aging system schematic of the present invention, and wherein (a) is front view, (b) is vertical view.Also be one embodiment of the present of invention.
Symbol among the figure is represented respectively: 1. step-up transformer; 2. sample to be aging; 3. temperature controller; 4. electric boiling plate; 5.CYWD0500 current vortex sensor; 6.YE5937 detector for displacement measuring; 7. sensor probe; 8.CLYD331 acceleration transducer; 9.YE5852 charge amplifier; 10. oscilloscope; 11.JZK50 electromagnetic exciter; 12. power amplifier; 13. signal generator; 14. heating power supply control cubicle; 15. multi-stress aging platform base; 16. sample is fixed and bracing frame; 17. heating plate fixed support; 18. vibration generator crane; 19. thermocouple.
Five, embodiment
The invention will be further described according to instantiation that technique scheme is finished below in conjunction with accompanying drawing and inventor.
Referring to accompanying drawing, the present invention is the multi-stress aging experimental rig of a kind of high-rating generator or motor line rod stator insulation, main involving vibrations table top 15, step-up transformer 1, heating plate 4, heating power supply control cubicle 14, thermocouple 19, temperature controller 3, vibration generator 11, power amplifier 12, signal generator 13, acceleration transducer 8, displacement transducer 7, line rod specimen holder 16 and heating plate support 17.This device can carry out the multi-stress aging of various line rods, and realizes protection and timing automatically.Four kinds of ageing parameters are regulated as required, to satisfy the not aging requirement of collinear rod.System schematic as shown in Figure 1.
Vibration table 15 is bar construction corrosion resistant plates of cement casting, and specification is length * wide * height=1.5m * 0.6m * 1.2 m.Support 16 and 17 can be on the guide groove of base plate 15 slidable adjustment, adapting to different specimen lengths and width, the maximum length that this device can aging sample is 1500mm, thickness is 50mm.Heating plate 4 is fixed on the support 17, and heating plate 4 up and down constitutes a heating cavity, and the heating tube of heating plate inside is as heating source, by electrical power control cabinet 14 power supplies.
Step-up transformer 1 is used to provide the aging required high voltage of electricity, applies voltage range 0～100kV.Transformer has automatic safety device and time set, can write down ageing time automatically when making alive, stops to write down ageing time during outage automatically.When the sliding sudden strain of a muscle in surface takes place or punctures in sample in ageing process, the transformer automatic trip, and stop to write down ageing time automatically.
The method that realizes said apparatus is, when carrying out multi-stress aging, the output voltage of step-up transformer 1 is adjusted to aging required voltage, high-voltage line is connected on the strand 2 of line rod the high-field electrode when aging, online excellent insulating surface is pasted the aluminium foil electrode as ground electrode with the high temperature silicone grease, the end coated anticorona coating of line rod prevents to take place when voltage from raising the sliding sudden strain of a muscle in end, guarantees that the line rod can carry out long-term ageing.Line rod surface-coated low-resistance varnish to reduce the contact resistance of line rod surface and aluminium foil, guarantees discharge off between excellent surface of long-term ageing process center line and the aluminium foil and the insulation parameter of monitoring sample in the ageing process exactly.
By the heating tube that is evenly distributed in the heating plate sample is heated, heating plate is an aluminum plate.Electrical power control cabinet 14 provides heating power supply, can increase or reduce the quantity of heating tube, 300 ℃ of the highest aging temperatures of system according to aging requirement.The heating cavity that heating plate constitutes coats one deck insulation material and is used for keeping the interior heat ageing temperature of cavity.Thermocouple 19 is used for measuring the temperature in the heating cavity, and temperature controller 3 is used for controlling the temperature in the heating chamber, when temperature reaches the temperature of setting, adds thermal relay in the deenergization control cubicle, stops heating; When temperature was lower than the temperature of setting, temperature controller closed and adds thermal relay, began heating, can keep temperature-resistant in the heating chamber like this.Mechanical stress produces by vibration generator 11, by the way of output of conditioning signal generator 13 and the gain of power amplifier 12, can control the size of exciting force and the size of vibration acceleration, 6 sizes that are used for the monitors vibration displacement, 10 sizes that are used for the monitors vibration acceleration.The excursion of exciting force is 0～500N, and amplitude 800～5000 μ m can select different exciting force and amplitude size according to different aging samples.By changing the output signal mode of signal generator 13, can change the mode (sine, square wave, triangular wave etc.) of output exciting force.In addition, the hot machine stress that cold cycling produces also be quicken the aging major reason of stator insulation (at electric motor starting, stop or loading when changing, because lead is different with the linear expansion coefficient of insulating barrier, produce shearing force at the position, boundary, lead and insulation displacement, or the space in the insulating barrier enlarges; In addition, the hot stretched of coil itself makes end winding produce bending moment, and the insulating barrier of the export department of groove and coil bending portion produces the damage of low frequency flexural fatigue, thereby destroys insulation).Native system can by to line rod sample heating and cooling simulate the hot machine stress that cold cycling produces.By regularly closing and cutting off heating power supply and control heating and cooling speed, each cycle is finished heating and cooling circulations (can set the cycle of cold cycling as required).When carrying out multi-stress aging, electricity, heat and mechanical stress apply on the online excellent sample 2 simultaneously, and regularly thermal and mechanical stress is simulated in heating and cooling simultaneously, realize that like this four factors are aging simultaneously.
The present invention can apply the aging stress of electricity, heat, machinery and cold cycling simultaneously to aging motor lines rod, and both to quicken sample aging to reach, and does not destroy the purpose of sample agine mechaism again, the ageing process of real simulated motor lines rod sample.Adopt the present invention, carried out the multi-stress aging test of 780kW/6kV line rod and two batches of prototype lines of 300MW/18kV rod, also carried out the multi-stress aging test of the model line rod of 13mm * 51mm * 1400mm (insulation thickness 3.5mm).The result shows that system satisfies the multi-stress aging requirement of these three kinds of samples, and aging effect is obvious.
Claims (3)
1. stator winding conductor bars in electrical machines multi-stress aging device, it is characterized in that this stator winding conductor bars in electrical machines multi-stress aging device comprises: a multi-stress aging platform base [15], one is that sample to be aging [2] provides electricity aging required high-tension step-up transformer [1], one temperature controller [3], one heating plate [4], one current vortex sensor [5], one detector for displacement measuring [6], one sensor probe [7], one acceleration transducer [8], one charge amplifier [9], one oscilloscope [10], one electromagnetic exciter [11], one power amplifier [12], one signal generator [13], one heating power supply control cubicle [14], fixing and the bracing frame [16] of sample, heating plate fixed support [17], vibration generator crane [18] and thermocouple [19] constitute;
The table top of multi-stress aging platform base [15] is the bar construction corrosion resistant plate of cement casting, it is provided with sample fixing and bracing frame [16] and heating plate fixed support [17], and can be on the guide groove of base plate [15] slidable adjustment, to adapt to different specimen lengths and width; Sample to be aging [2] is fixed on the fixing and bracing frame [16] of sample, and by sensor probe [7],, current vortex sensor [5], detector for displacement measuring [6] monitor its vibration parameters; Heating plate [4] is fixed on the heating plate fixed support [17], and heating plate up and down [4] constitutes a heating cavity, and the heating tube of heating plate [4] inside is powered by electrical power control cabinet [14] as heating source; Heating plate [4] is provided with thermocouple [19], and thermocouple [19] also is connected with heating power supply control cubicle [14] by temperature controller [3];
Also be provided with electromagnetic exciter [11] on the multi-stress aging platform base [15], electromagnetic exciter [11] is supported by vibration generator crane [18], electromagnetic exciter [11] is connected with power amplifier [12] and signal generator [13] in turn, and electromagnetic exciter [11] also is communicated with acceleration transducer [8], charge amplifier [9], oscilloscope [10];
During use step-up transformer [1] is connected on the sample to be aging [2], applies the aging required voltage of electricity.
2. stator winding conductor bars in electrical machines multi-stress aging device as claimed in claim 1 is characterized in that described step-up transformer [1] applies voltage range 0～100kV; And have automatic safety device and time set, and can when making alive, write down ageing time automatically, stop to write down ageing time during outage automatically; When the sliding sudden strain of a muscle in surface takes place or punctures in sample in ageing process, the transformer automatic trip, and stop to write down ageing time automatically.
3. a stator winding conductor bars in electrical machines multi-stress aging method that realizes claim 1 is characterized in that, carries out in the following manner:
1) when carrying out multi-stress aging, the output voltage of step-up transformer is adjusted to aging required voltage, high-voltage line is connected on the strand of line rod the high-field electrode when aging, online excellent insulating surface is pasted the aluminium foil electrode as ground electrode with the high temperature silicone grease, the end coated anticorona coating of line rod prevents to take place when voltage from raising the sliding sudden strain of a muscle in end, guarantees that the line rod can carry out long-term ageing; Line rod surface-coated low-resistance varnish to reduce the contact resistance of line rod surface and aluminium foil, guarantees discharge off between excellent surface of long-term ageing process center line and the aluminium foil and the insulation parameter of monitoring sample in the ageing process exactly;
2) by the heating tube that is evenly distributed in the heating plate sample is heated, electrical power control cabinet provides heating power supply, can increase or reduce the quantity of heating tube, 300 ℃ of the highest aging temperatures of system according to aging requirement;
3) heating cavity of heating plate formation coats one deck insulation material and is used for keeping the interior heat ageing temperature of cavity;
4) adopt thermocouple to be used for measuring temperature in the heating cavity, temperature controller is used for controlling the temperature in the heating chamber, when temperature reaches the temperature of setting, adds thermal relay in the deenergization control cubicle, stops heating; When temperature was lower than the temperature of setting, temperature controller control heating relay closes began heating, can keep temperature-resistant in the heating chamber like this;
5) mechanical stress produces by vibration generator, by the way of output of conditioning signal generator and the gain of power amplifier, can control the size of exciting force and the size of vibration acceleration, adopt the size of detector for displacement measuring monitors vibration displacement, oscilloscope is used for the size of monitors vibration acceleration; The excursion of exciting force is 0～500N, and amplitude 800 μ m～5000 μ m can select different exciting force and amplitude size according to different aging samples;
6) by changing the output signal mode of signal generator, can change the mode of output exciting force;
7) by to line rod sample heating and cooling simulate the hot machine stress that cold cycling produces, promptly control heating and cooling speed by time closing and cut-out heating power supply, each cycle is finished heating and cooling circulation, can set the cycle of cold cycling as required, also can be in certain temperature range cold cycling;
8) when carrying out multi-stress aging, electricity, heat and mechanical stress are applied on the sample line rod simultaneously, and regularly thermal and mechanical stress is simulated in heating and cooling simultaneously, realize that like this four factors are aging simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021394237A CN1162953C (en) | 2002-09-13 | 2002-09-13 | Electric machine stator wire bar multifactor ageing device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021394237A CN1162953C (en) | 2002-09-13 | 2002-09-13 | Electric machine stator wire bar multifactor ageing device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1402413A true CN1402413A (en) | 2003-03-12 |
| CN1162953C CN1162953C (en) | 2004-08-18 |
Family
ID=4750073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021394237A Expired - Fee Related CN1162953C (en) | 2002-09-13 | 2002-09-13 | Electric machine stator wire bar multifactor ageing device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1162953C (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100453993C (en) * | 2005-04-29 | 2009-01-21 | 富准精密工业(深圳)有限公司 | Quick aging method for vacuum seal product |
| US7839158B2 (en) | 2004-06-07 | 2010-11-23 | Advantest Corp. | Method of detecting abnormality in burn-in apparatus |
| CN101813716B (en) * | 2009-12-07 | 2012-07-04 | 哈尔滨电机厂有限责任公司 | Manufacturing method of large generator stator bar electrical-heating aging test device |
| CN104297649A (en) * | 2014-10-20 | 2015-01-21 | 西安交通大学 | Heat ageing test device and method of generator stator coil bar |
| CN104697571A (en) * | 2015-03-23 | 2015-06-10 | 中国南方电网有限责任公司调峰调频发电公司 | Generator stator bar copper core and external insulator shell removal loosing measuring method |
| CN104931834A (en) * | 2015-06-25 | 2015-09-23 | 桂林理工大学 | Electromagnetic acting force stress generating method for winding insulation sample accelerated aging life experiment |
| CN105203928A (en) * | 2015-08-07 | 2015-12-30 | 北重阿尔斯通（北京）电气装备有限公司 | Device and method for detecting insulation integrity of motor stator coil bar |
| CN105974242A (en) * | 2016-06-28 | 2016-09-28 | 太原理工大学 | Multi-factor aging simulation experiment device and simulation experiment method thereof |
| CN106855497A (en) * | 2015-12-09 | 2017-06-16 | 中国电力科学研究院 | Heat-vibrating the ageing test apparatus and method of a kind of XLPE insulation print |
| CN108646152A (en) * | 2018-05-11 | 2018-10-12 | 哈动国家水力发电设备工程技术研究中心有限公司 | A kind of method of polarization/depolarization current method check and evaluation stator bar insulation ag(e)ing state |
| CN111289135A (en) * | 2020-04-03 | 2020-06-16 | 国家电网有限公司 | Anti-interference RTD measurement circuit |
| CN112269081A (en) * | 2020-10-14 | 2021-01-26 | 西安交通大学 | Multi-factor aging stress control platform and method for stator bar of large hydraulic generator |
| CN114002532A (en) * | 2021-11-01 | 2022-02-01 | 南方电网调峰调频发电有限公司检修试验分公司 | Method for judging insulation thermomechanical degradation of VPI (vacuum vapor pressure insulated) bar of pumped storage generator motor |
| CN114578225A (en) * | 2022-02-28 | 2022-06-03 | 华北电力大学（保定） | Device and method for simulating insulation wear of stator winding |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101408578B (en) * | 2008-11-21 | 2011-12-14 | 重庆大学 | Multiple factors accelerated aging test apparatus and method for oil paper insulation of transformer |
-
2002
- 2002-09-13 CN CNB021394237A patent/CN1162953C/en not_active Expired - Fee Related
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7839158B2 (en) | 2004-06-07 | 2010-11-23 | Advantest Corp. | Method of detecting abnormality in burn-in apparatus |
| CN1965241B (en) * | 2004-06-07 | 2011-03-30 | 爱德万测试株式会社 | Method for diagnosing status of burn-in apparatus |
| CN100453993C (en) * | 2005-04-29 | 2009-01-21 | 富准精密工业(深圳)有限公司 | Quick aging method for vacuum seal product |
| CN101813716B (en) * | 2009-12-07 | 2012-07-04 | 哈尔滨电机厂有限责任公司 | Manufacturing method of large generator stator bar electrical-heating aging test device |
| CN104297649A (en) * | 2014-10-20 | 2015-01-21 | 西安交通大学 | Heat ageing test device and method of generator stator coil bar |
| CN104697571A (en) * | 2015-03-23 | 2015-06-10 | 中国南方电网有限责任公司调峰调频发电公司 | Generator stator bar copper core and external insulator shell removal loosing measuring method |
| CN104697571B (en) * | 2015-03-23 | 2017-02-01 | 中国南方电网有限责任公司调峰调频发电公司 | Generator stator bar copper core and external insulator layer shell removal loosing measuring method |
| CN104931834A (en) * | 2015-06-25 | 2015-09-23 | 桂林理工大学 | Electromagnetic acting force stress generating method for winding insulation sample accelerated aging life experiment |
| CN104931834B (en) * | 2015-06-25 | 2017-12-12 | 桂林理工大学 | Winding insulation sample accelerated life tests electromagnetic force stress production method |
| CN105203928A (en) * | 2015-08-07 | 2015-12-30 | 北重阿尔斯通（北京）电气装备有限公司 | Device and method for detecting insulation integrity of motor stator coil bar |
| CN106855497A (en) * | 2015-12-09 | 2017-06-16 | 中国电力科学研究院 | Heat-vibrating the ageing test apparatus and method of a kind of XLPE insulation print |
| CN105974242A (en) * | 2016-06-28 | 2016-09-28 | 太原理工大学 | Multi-factor aging simulation experiment device and simulation experiment method thereof |
| CN108646152A (en) * | 2018-05-11 | 2018-10-12 | 哈动国家水力发电设备工程技术研究中心有限公司 | A kind of method of polarization/depolarization current method check and evaluation stator bar insulation ag(e)ing state |
| CN108646152B (en) * | 2018-05-11 | 2021-05-25 | 哈动国家水力发电设备工程技术研究中心有限公司 | Method for detecting and evaluating insulation aging state of stator bar by polarization/depolarization current method |
| CN111289135A (en) * | 2020-04-03 | 2020-06-16 | 国家电网有限公司 | Anti-interference RTD measurement circuit |
| CN112269081A (en) * | 2020-10-14 | 2021-01-26 | 西安交通大学 | Multi-factor aging stress control platform and method for stator bar of large hydraulic generator |
| CN114002532A (en) * | 2021-11-01 | 2022-02-01 | 南方电网调峰调频发电有限公司检修试验分公司 | Method for judging insulation thermomechanical degradation of VPI (vacuum vapor pressure insulated) bar of pumped storage generator motor |
| CN114002532B (en) * | 2021-11-01 | 2022-11-29 | 南方电网调峰调频发电有限公司检修试验分公司 | Method for judging insulation thermomechanical degradation of VPI (vacuum vapor pressure insulated) bar of pumped storage generator motor |
| US11892496B1 (en) | 2021-11-01 | 2024-02-06 | Csg Power Generation Co., Ltd. Maintenance And Test Company | Method for determining insulation thermomechanical deterioration of VPI wire rod of pumped storage power generation motor |
| CN114578225A (en) * | 2022-02-28 | 2022-06-03 | 华北电力大学（保定） | Device and method for simulating insulation wear of stator winding |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1162953C (en) | 2004-08-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1162953C (en) | Electric machine stator wire bar multifactor ageing device and method | |
| CN107329064B (en) | A kind of experimental method of casing major insulation multiple-factor joint aging | |
| CN109375072B (en) | Method for evaluating insulation aging state of stator bar by space charge method | |
| JP6224220B2 (en) | Neutral point of generator | |
| CN104297649A (en) | Heat ageing test device and method of generator stator coil bar | |
| CN206399790U (en) | A kind of experimental provision for sample of cable thermal vibration joint aging | |
| CN111855432A (en) | Device and method for testing stress-strain curve of titanium alloy material under high-temperature high-strain rate | |
| CN105974242A (en) | Multi-factor aging simulation experiment device and simulation experiment method thereof | |
| CN112269081A (en) | Multi-factor aging stress control platform and method for stator bar of large hydraulic generator | |
| Weidner et al. | Nanotechnology in high voltage insulation systems for turbine generators-First results | |
| CN220438410U (en) | Variable frequency series resonance test device convenient to installation is adjusted | |
| CN115791473A (en) | Solid insulating material multi-factor aging test device and method | |
| Williamson et al. | Investigation of equivalent stator-winding thermal resistance during insulation system ageing | |
| Danikas et al. | A review on electrical machines insulation aging and its relation to the power electronics arrangements with emphasis on wind turbine generators | |
| CN105403773B (en) | A kind of method of real time on-line monitoring control rod drive mechanism electromagnetic coil inductance value | |
| CN104931834B (en) | Winding insulation sample accelerated life tests electromagnetic force stress production method | |
| Cui et al. | Life models of polyimide film under combined thermal and electrical stresses used in inverter-fed traction motor | |
| Chen et al. | Study of epoxy/mica insulation deterioration in generator stator using ultra-wide band partial discharge testing technique | |
| CN114660423A (en) | Device and method for simulation experiment of generation of oiled paper insulation bubbles in multiple physical fields | |
| CN112326544B (en) | Electric corrosion test device and test method for generator stator end material | |
| KR20050029599A (en) | Accelerated water treeing test facility for power cables | |
| CN114137370A (en) | Space charge and PD combined test experimental equipment and experimental method | |
| CN108762328B (en) | High-temperature superconducting strip welding pressure control and performance testing device | |
| Kuehl et al. | Improving the Inductive Crimping Technology in the Production of Electric Motors | |
| CN114941056B (en) | In-service part on-site electric pulse relieving device and relieving method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |