CN202649388U - Testing system for stator insulation discharge starting and blanking voltage of large wind generator - Google Patents
Testing system for stator insulation discharge starting and blanking voltage of large wind generator Download PDFInfo
- Publication number
- CN202649388U CN202649388U CN 201220237942 CN201220237942U CN202649388U CN 202649388 U CN202649388 U CN 202649388U CN 201220237942 CN201220237942 CN 201220237942 CN 201220237942 U CN201220237942 U CN 201220237942U CN 202649388 U CN202649388 U CN 202649388U
- Authority
- CN
- China
- Prior art keywords
- voltage
- motor
- leading
- extinction voltage
- test
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
Abstract
The utility model relates to a testing system for stator insulation discharge starting and blanking voltage of a large wind generator. The testing system is used for testing starting voltage and blanking voltage relatively partially discharging and testing starting voltage and blanking voltage alternately partially discharging. The testing system comprises a power-frequency voltage-withstand test device, two wire outlet ends and a grounding end are arranged on the power-frequency voltage-withstand test device, one wire outlet end is connected with a phase to be tested in a motor, the other wire outlet end is grounded or is connected with the phase to be tested in the motor, the grounding end is grounded, and a motor shell is grounded. Compared with the prior art, the testing system can measure accurate and useful data by the aid of a simple method without special testing instruments, and the data are an important technical index for a stator insulation structure of the large wind generator.
Description
Technical field
The utility model relates to the motor test field, especially relates to the test macro of the initial and extinction voltage of a kind of large-scale wind driven generator stator insulation discharge.
Background technology
The development and utilization development of wind energy is very fast, and the application technology of wind-power electricity generation reaches its maturity.After the Fukushima, Japan nuclear power station event, Global Wind-power Market becomes new focus.
Development of Wind Power In China is rapid, and the main driver of development is from government's support and encouragement, existing and newly-built wind field increase in demand, the advantage of material cost.Along with dissolve the progressively solution of problem of the further lifting of wind-powered electricity generation economy and wind-electricity integration, under the strong backing of government policy, China will continue to lead the development of world's wind-powered electricity generation simultaneously.
The current transformer that large-scale wind driven generator uses generally is divided into two kinds: controlled rectification and uncontrollable rectification.Use uncontrollable rectification current transformer generating efficiency low.Use controlled rectification current transformer generating efficiency high, so the outer main flow aerogenerator of Now Domestic is selected the controlled rectification current transformer, but use the controlled rectification current transformer can produce pulse spike voltage (2000V one 2500V), under this voltage, corona phenomenon occurs easily.Corona produces the oxide of thermal effect and ozone, helium etc., makes that local temperature raises in the coil, causes that tackifier is rotten, carbonization, and strands insulation and mica bleach, and then make loose, the short circuit of strand, insulation ag(e)ing.In addition because heat cured insulation surface and cell wall loose contact or when unstable under the effect of electric and magnetic oscillation, will cause the spark discharge of groove internal clearance.The local temperature rise that this spark discharge causes will make insulating surface be subject to Eroded.Everything all will cause great infringement to electrical machine insulation.Large-scale wind driven generator uses the controlled rectification current transformer, will consider the corona problem that peaking voltage produces, this just requires the anticorona ability of insulation system to be eager to excel, just require specifically discharge inception voltage, the extinction voltage of insulation system will be higher than pulse spike voltage, just can not produce corona like this when peaking voltage, insulation system just can not be subjected to the infringement of corona.
We will measure discharge inception voltage, the extinction voltage of insulation system, can know just whether insulation system is feasible.At present also there is not special instrument can measure large-scale wind driven generator stator insulation structure discharge inception voltage, extinction voltage both at home and abroad.
The utility model content
The purpose of this utility model is exactly the test macro that provides a kind of convenient large-scale wind driven generator stator insulation of testing starting potential, extinction voltage to discharge initial and extinction voltage for the defective that overcomes above-mentioned prior art existence.
The purpose of this utility model can be achieved through the following technical solutions:
The test macro of the initial and extinction voltage of a kind of large-scale wind driven generator stator insulation discharge, test relatively starting potential, the extinction voltage of starting potential, extinction voltage and the alternate shelf depreciation of shelf depreciation, described test macro comprises the power frequency withstand test device, this device is provided with two leading-out terminals and earth terminal, to be measured being connected in one leading-out terminal and the motor, phase to be measured in another leading-out terminal ground connection or the connection motor, described earth terminal ground connection, the motor casing ground connection of described motor.
Test relatively starting potential, the extinction voltage of shelf depreciation, to be measured being connected in a leading-out terminal of power frequency withstand test device and the motor, another leading-out terminal ground connection.
Test starting potential, the extinction voltage of alternate shelf depreciation, two leading-out terminals of power frequency withstand test device all with motor in to be measured being connected.
It is to be measured identical that described two leading-out terminals connect.
Compared with prior art, the utility model is not having in the situation of special testing tool, can adopt a kind of simple method to measure accurate useful data, and these data are very important technical indicators as large-scale wind driven generator stator insulation structure.
Description of drawings
Structural representation of the present utility model when Fig. 1 is the starting potential of testing shelf depreciation relatively, extinction voltage;
Fig. 2 structural representation of the present utility model during for starting potential, the extinction voltage of the alternate shelf depreciation of test.
Among the figure, 1 is that power frequency withstand test device, 11 is that earth terminal, 12 is that the first leading-out terminal, 13 is that the second leading-out terminal, 2 is motor.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
Embodiment
The test macro of the initial and extinction voltage of a kind of large-scale wind driven generator stator insulation discharge can be used for testing relatively starting potential, the extinction voltage of starting potential, extinction voltage and the alternate shelf depreciation of shelf depreciation.Test macro comprises power frequency withstand test device 1, this device is provided with earth terminal 11, the first leading-out terminal 12 and the second leading-out terminal 13, structure when testing starting potential, the extinction voltage of shelf depreciation relatively as shown in Figure 1, earth terminal 11 ground connection, to be measured being connected in the first leading-out terminal 12 and the motor 2, the second leading-out terminal 13 ground connection, the motor casing of motor 2 is ground connection also.Structure when testing starting potential, the extinction voltage of alternate shelf depreciation as shown in Figure 2, earth terminal 11 ground connection, 2 interior two different to be measured being connected of the first leading-out terminal 12 and the second leading-out terminal 13 and motor, the motor casing ground connection of motor 2.
Three phase winding partial discharge inception voltages, extinction voltage test, test event: winding is partial discharge inception voltage, extinction voltage test over the ground; The alternate partial discharge inception voltage of winding, extinction voltage test.Under the environment of complete darkness, test, adopt ocular estimate.Method of testing: from 0V, one by one with the differential voltage that increases of 100V, until hear the faintest sound or observe till the faintest corona, the magnitude of voltage of record this moment is starting potential.The 300-400V that raises again, again with the differential reduction voltage of 100V, until till the corona complete obiteration, the magnitude of voltage of record this moment is extinction voltage.
The personnel that participate in test must wear the electric insulation footwear of the above voltage of anti-6000V, wear the electric insulation gloves of the above voltage of anti-6000V, wear the safety helmet of the above voltage of anti-3000V.The above insulating pad of place mat 5mm (3240 epoxy resin bonded fibers or equal dielectric strength and above material) is answered on ground.To specifications requirement of all appts operation meets the associated safety requirement simultaneously.
Claims (4)
1. the test macro of the initial and extinction voltage of large-scale wind driven generator stator insulation discharge, test relatively starting potential, the extinction voltage of starting potential, extinction voltage and the alternate shelf depreciation of shelf depreciation, it is characterized in that, described test macro comprises the power frequency withstand test device, this device is provided with two leading-out terminals and earth terminal, to be measured being connected in one leading-out terminal and the motor, phase to be measured in another leading-out terminal ground connection or the connection motor, described earth terminal ground connection, the motor casing ground connection of described motor.
2. the test macro of the initial and extinction voltage of a kind of large-scale wind driven generator stator insulation discharge according to claim 1, it is characterized in that, test relatively starting potential, the extinction voltage of shelf depreciation, to be measured being connected in one leading-out terminal of power frequency withstand test device and the motor, another leading-out terminal ground connection.
3. the test macro of the initial and extinction voltage of a kind of large-scale wind driven generator stator insulation discharge according to claim 1, it is characterized in that, test starting potential, the extinction voltage of alternate shelf depreciation, two leading-out terminals of power frequency withstand test device all with motor in to be measured being connected.
4. the test macro of the initial and extinction voltage of a kind of large-scale wind driven generator stator insulation discharge according to claim 3 is characterized in that whether it is to be measured identical that described two leading-out terminals connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220237942 CN202649388U (en) | 2012-05-23 | 2012-05-23 | Testing system for stator insulation discharge starting and blanking voltage of large wind generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220237942 CN202649388U (en) | 2012-05-23 | 2012-05-23 | Testing system for stator insulation discharge starting and blanking voltage of large wind generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202649388U true CN202649388U (en) | 2013-01-02 |
Family
ID=47418479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220237942 Expired - Fee Related CN202649388U (en) | 2012-05-23 | 2012-05-23 | Testing system for stator insulation discharge starting and blanking voltage of large wind generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202649388U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103954896A (en) * | 2014-05-12 | 2014-07-30 | 国家电网公司 | Oiled paper insulation partial discharge inception voltage test system |
| CN111562466A (en) * | 2019-12-06 | 2020-08-21 | 雅砻江流域水电开发有限公司 | Detection method for partial discharge of stator winding of large hydraulic generator |
-
2012
- 2012-05-23 CN CN 201220237942 patent/CN202649388U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103954896A (en) * | 2014-05-12 | 2014-07-30 | 国家电网公司 | Oiled paper insulation partial discharge inception voltage test system |
| CN111562466A (en) * | 2019-12-06 | 2020-08-21 | 雅砻江流域水电开发有限公司 | Detection method for partial discharge of stator winding of large hydraulic generator |
| CN111562466B (en) * | 2019-12-06 | 2024-02-20 | 雅砻江流域水电开发有限公司 | Detection method for partial discharge of stator winding of large-sized hydraulic generator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102832720A (en) | Online monitoring equipment power supply system based on wireless electric power transmission technology | |
| Rao et al. | Performance requirements of present-day distribution transformers for Smart Grid | |
| CN103337669A (en) | Reutilization method of power battery of electric automobile | |
| CN103424672A (en) | Large wind turbine generator stator insulation discharge starting and extinction voltage test method | |
| CN202649388U (en) | Testing system for stator insulation discharge starting and blanking voltage of large wind generator | |
| CN203054118U (en) | Short-circuit protection test apparatus for IGBT power unit | |
| CN202886533U (en) | Tower grounding detection device | |
| CN203164242U (en) | Current waveform generation device | |
| CN210347800U (en) | Fill experimental detecting system of electric pile | |
| CN204405728U (en) | A kind of arrester discharge counter | |
| CN109444509B (en) | Device for measuring bearing current of wind driven generator and application thereof | |
| CN202994962U (en) | Turn-to-turn insulation detector for dry air reactor | |
| CN203278257U (en) | High-voltage direct-current power supply device capable of realizing rapid polarity reversal | |
| CN203037815U (en) | Photovoltaic assembly heat cycle testing circuit monitoring device | |
| CN206628829U (en) | A kind of power transmission device for being used to eliminate common mode disturbances | |
| CN114002532B (en) | Method for judging insulation thermomechanical degradation of VPI (vacuum vapor pressure insulated) bar of pumped storage generator motor | |
| CN202583426U (en) | Equipment for detecting voltage and internal resistance of battery | |
| CN201716379U (en) | Tester used for high-voltage electroscopic pen | |
| CN104407247A (en) | Method and device for determining carrying capacity of two parallel direct-buried cables | |
| CN202735484U (en) | Full power test device of direct-drive type megawatt-class permanent magnet synchronous generator | |
| CN202661584U (en) | Alternating-current voltage-withstanding resonance test device of electrical equipment in substations | |
| CN201795882U (en) | Power testing device for power generating device | |
| CN203084124U (en) | Multi-parameter batch test system of transformer | |
| CN104375033A (en) | Device for testing long-term operation performance of direct current cable system under extra-high voltage strong current working condition | |
| CN104635025A (en) | Discharge counter and discharge counting method for arrester |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20180523 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |