CN207730875U - A kind of wind-driven generator winding insulation failure detector - Google Patents
A kind of wind-driven generator winding insulation failure detector Download PDFInfo
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- CN207730875U CN207730875U CN201820160380.9U CN201820160380U CN207730875U CN 207730875 U CN207730875 U CN 207730875U CN 201820160380 U CN201820160380 U CN 201820160380U CN 207730875 U CN207730875 U CN 207730875U
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Abstract
The utility model discloses a kind of wind-driven generator winding insulation failure detectors, it can be used for the detection to wind-driven generator winding insulation failure comprising pulse power source module, signal detection module, Signal-regulated kinase, USB type data collecting card and laptop；Pulse power source module is connected with tested wind-driven generator winding, signal detection module input terminal is connected with tested wind-driven generator winding, output end is connected with Signal-regulated kinase input terminal, Signal-regulated kinase output end is connected with USB type data collecting card analog signal input channel, and data collecting card connects laptop by USB data transmission line；The utility model can be realized respond the detection of voltage and current waveform to being tested wind-driven generator winding under pulse voltage, the insulation fault of the tested wind-driven generator winding of detection, has the advantages that good portability, can human-computer interaction, data convenient storage.
Description
Technical field
The utility model is related to technical field of insulation detection, more particularly to a kind of wind-driven generator winding insulation fault detect
Device.
Background technology
Wind-driven generator is the core of wind-power electricity generation, and existing China's major part wind power plant is located at remote broad area, such as
Coastal waters, plateau, grassland, Gobi desert etc., and distribution area is wide, quantity is more, far from monitoring center.Wind-driven generator is easy to occur
Failure, especially its rotor insulated part break down.Therefore, it in wind-driven generator manufacture and operational process, sends out as early as possible
Hidden danger and defect in its existing rotor insulation system, carry out replacing in time and repair be ensure wind-driven generator operational safety and
Reliable most effective means.
For stator and rotor of wind power generator winding, pulse voltage can be applied to it, measure be tested wind-driven generator around
The response wave shape that group generates at this voltage, and with other normal windings compared with the response wave shape under same pulse voltage,
Judge defect and failure existing for the winding insulation, including turn-to-turn short circuit, phase insulation failure, insulation against ground failure, some are lacked
Fall into that be general Insulation Test can not find, therefore, impulse waveform comparison method has larger advantage in motor insulation condition diagnosis,
High voltage pulse has test voltage high simultaneously, testing time short feature, therefore has the advantages that nondestructive measurement.Existing instrument
(turn-to-turn voltage resistant instrument) general only measure is tested voltage responsive waveform of the wind-driven generator winding under pulse voltage, if it is desired to measuring
Current-responsive waveform, it is necessary to which oneself impressed current measuring instrument now can detect wind-driven generator simultaneously and exist it is hoped that there will be a device
Voltage under pulse voltage and current-responsive waveform, the variation that Integrated comparative voltage occurs with current-responsive waveform, it would be desirable to carry
The accuracy of high impulse waveform comparison method detection winding failure.
Invention content
To solve the above-mentioned problems, the utility model provides a kind of wind-driven generator winding insulation failure detector,
The device can generate pulse testing voltage, detect and be tested voltage of the wind-driven generator winding under the high voltage pulse and electric current sound
Waveform is answered, to winding insulation failure detection and judgement.
In order to achieve the above object, the utility model adopts the following technical solution：
A kind of wind-driven generator winding insulation failure detector includes pulse power source module, signal detection module, signal
Conditioning module, USB type data collecting card and laptop；Pulse power source module is connected with tested wind-driven generator winding, letter
Number detection module input terminal is connected with tested wind-driven generator winding, and output end is connected with Signal-regulated kinase input terminal, signal
Conditioning module output end is connected with USB type data collecting card analog signal input channel, and data collecting card passes through USB data transmission
Line connects laptop.
The wherein described pulse power source module includes safety protective circuit, transforming circuit, voltage display circuit and high voltage pulse
Circuit；The safety protective circuit is made of the fuse, air switch, overcurrent relay being connected；The transforming circuit
Including the electronic pressure controller, step-up transformer and full-wave rectification bridge being connected；The voltage display circuit is by the high pressure that is connected
Divider, detection circuit and digital display meter head form；The high voltage pulse circuit includes charging resistor, storage capacitor, silicon-controlled mould
Block, wave front resistance and tuning capacitance；Safety protective circuit input terminal is power grid 220V industrial-frequency alternating currents, output termination transforming circuit
Input terminal, transforming circuit output termination voltage display circuit, while being connected with high voltage pulse circuit input terminal.
The wherein described storage capacitor is all made of polypropylene film high-voltage pulse capacitance with tuning capacitance.
The wherein described silicon controlled module is composed in series by 10 silicon-controlled TYN1665.
The wherein described signal detection module is divided into voltage detection unit and current detecting unit.
The wherein described voltage detection unit is RC divider, RC divider with pulse power source module output end phase simultaneously
Connection, RC divider rated operational voltage are 10kV, intrinsic standoff ratio 1000:1, proportional precision ± 0.5%.
The wherein described current detecting unit is current transformer, and current transformer is connected on pulse power source module high-pressure side,
Current transformer uses 101 HF current transformers of Pearson.
The wherein described Signal-regulated kinase is divided into voltage signal conditioning unit and current signal conditioning unit, and the two is in circuit
Structure is consistent.
The sample rate of the wherein described USB type data collecting card should be greater than the two of its acquisition pulse voltage and current signal bandwidth
Times or more；The USB type data collecting card uses Ling Hua USB-1210.
The beneficial effects of the utility model are：
Voltage of the tested wind-driven generator winding under pulse voltage is only detected relative to conventional turn-to-turn pressure tester to ring
Answer waveform, the utility model that can detect voltage of the wind-driven generator winding under pulse voltage and current-responsive waveform simultaneously,
The comparison result of voltage waveform and current waveform is compared, the standard to wind-driven generator winding insulation fault detect can be improved
True property；Voltage current waveform data can be utilized simultaneously, analyze the impedance spy for being tested wind-driven generator winding under pulse voltage
Property, be conducive to the electrical properties and insulation fault of further analyzing wind-driven generator winding.
The utility model realizes data collection and analysis function using USB type data collecting card and laptop, relatively
In traditional oscillograph, desk computer or industrial industrial personal computer, have the advantages that small, light-weight, can be greatly improved
Utility model device portability is tested convenient for field condition.
Description of the drawings
Fig. 1 is the utility model detection structure block diagram.
Fig. 2 is the utility model pulse power structure diagram.
Fig. 3 is the utility model signal conditioning circuit diagram.
Specific implementation mode
The utility model is described further below in conjunction with the accompanying drawings.
A kind of wind-driven generator winding insulation failure detector structure of the utility model is as shown in Figure 1, including pulse electricity
Source module, signal detection module, Signal-regulated kinase, USB type data collecting card and laptop.Pulse power source module and quilt
It surveys wind-driven generator winding to be connected, signal detection module input terminal is connected with tested wind-driven generator winding, output end and signal
Conditioning module input terminal is connected, and Signal-regulated kinase output end is connected with USB type data collecting card input channel, USB type data
Capture card connects laptop by USB data transmission line.
The pulse power source module structure is as shown in Fig. 2, including safety protective circuit, transforming circuit, voltage display circuit
With high voltage pulse circuit.The safety protective circuit is made of the fuse, air switch and overcurrent relay being connected, main
Realize overcurrent protection；The transforming circuit includes the electronic pressure controller, step-up transformer and full-wave rectification bridge being connected, and is realized
It is 5kV high voltage direct current by 220V power frequency low voltage transitions, electronic pressure controller adjusts voltage pulse output amplitude；The voltage is shown
Circuit is made of high-voltage bleeder, detection circuit and the digital display meter head being connected；The high voltage pulse circuit include charging resistor,
Storage capacitor, silicon controlled module, wave front resistance and tuning capacitance.Safety protective circuit input terminal gets access to grid 220V industrial frequency ACs
Electricity, output termination transforming circuit input terminal, transforming circuit output termination voltage display circuit, while being inputted with high voltage pulse circuit
End is connected.
Charging resistor one end is connected on full-wave rectification bridge high-voltage output end, the other end and energy storage in the high voltage pulse circuit
Capacitance is connected, and storage capacitor other end ground connection, the high-voltage output end and silicon controlled module of storage capacitor, wave front resistance is gone here and there successively
Connection, the wave front resistance other end are connected with tuning capacitance；Wherein charging resistor and wave front resistance are high pressure resistant, large power winding is electric
Resistance；The characteristics of storage capacitor is high-pressure polypropylene film pulsed capacitance, has high frequency, high-power, high current, rated capacity is
1uF, rated voltage 10kV；Tuning capacitance is also high-pressure polypropylene film pulsed capacitance, rated capacity 1nF, rated voltage
For 10kV.
The silicon controlled module is composed in series by 10 silicon-controlled TYN1665, each silicon-controlled by a high frequency triggering change
Depressor provides trigger signal, and all trigger signals come from same control signal, i.e., 10 silicon-controlled to be triggered simultaneously.
The signal detection module is divided into voltage detection unit and current detecting unit, signal detection module output end and letter
Number conditioning module input terminal is connected.
Voltage detection unit realizes that high voltage to the conversion between low-voltage, is divided by detecting by RC divider
Voltage value can react voltage on tested wind-driven generator winding in device low-voltage arm.RC divider intrinsic standoff ratio is 1000:1, ratio
Precision is ± 0.5%, rated operational voltage 10kV.RC divider by tested wind-driven generator winding under high voltage pulse
Response voltage the low voltage signal acquired for data collecting card is converted to according to intrinsic standoff ratio, due to pulse power peak-peak
For 5kV, therefore divider maximum output voltage is 5V, in data collecting card analog signal input range.
Current detecting unit, which is realized to be tested on wind-driven generator winding under pulse voltage by current transformer, responds electricity
Signal extraction is flowed, current detecting unit is HF current transformer Pearson 101, sensitivity 0.01V/A, maximum current peak
Value is 50000A, and current signal is converted to voltage signal by current transformer, since pulse current peak is no more than 500A,
Current transformer output voltage is no more than 5V, meets data collecting card analog signal input reference signal.
The Signal-regulated kinase is divided into voltage signal conditioning circuit and current signal conditioning circuit, and the two is in circuit structure
Be consistent, circuit theory as shown in figure 3, Signal-regulated kinase in the two-way of a signal acquisition module output end ± 5V in parallel
Transient Suppression Diode (TVS), model SMBJ5.0CA avoid subsequent circuit by voltge surge；It is high that TVS is followed by one
Precision amplifier chip AD8056, AD8056 are made of two amplifiers, and wherein AD8056A constitutes differential amplifier circuit, amplification factor
It is 1, improves signal conditioning circuit and inhibit null offset and inhibit the ability of noise and interference, AD8056B constitutes voltage follow electricity
The output driving ability of signal condition part is improved on road；After AD8056 simultaneously with two 2CL72 diodes and a SMBJ5.0CA
Connection realizes that the amplitude limitation function to institute's collection voltages signal, protection signal improve output voltage values and be no more than data collecting card
Input range, the wherein repetitive peak reverse voltage of 2CL72 are 10kV, it is ensured that when its front stage circuits is breakdown, signal
Modulate circuit output voltage is not more than ± 5V, and data collecting card is protected with this.Signal-regulated kinase output is divided into voltage
Output end and current output terminal connect corresponding data collecting card analog signal input channel respectively.
The USB type data collecting card is adopted for the voltage and current analog signal acquired to be converted to digital signal
Collection.The sample rate of USB type data collecting card should be greater than twice or more of its acquisition pulse voltage and current signal bandwidth.USB type
It is 16 that data collecting card, which uses Ling Hua USB-1210, USB type transmission mode, sampling resolution, it can provide 4 analogue differences
Divide input channel, each channel to provide the synchronized sampling rate for being up to 2MS/s, wanting for impulse waveform data acquisition can be met
It asks.
The workflow of the utility model is as follows：
Pulse high pressure is generated by pulse power source module first and is applied to tested wind-driven generator (being in shutdown status)
On winding, then the voltage and electric current letter for being tested that wind-driven generator winding responds under the pulse voltage are extracted by signal detection module
Number, the signal extracted is sent into Signal-regulated kinase and realizes that the conditioning of signal is protected with to the input of data collecting card, then by USB
Type data collecting card send signal collected progress A/D conversions and by transformed data into laptop, to realization pair
The detection of response voltage current waveform of the tested wind-driven generator winding under pulse voltage, judges to be tested wind-driven generator winding
Insulation fault.
Only illustrate the utility model above and not limits technical solution described in the utility model；Therefore all do not take off
The technical solution of spirit and scope from the utility model and its improvement, tool should all cover the claim model in the utility model
In enclosing.
Claims (9)
1. a kind of wind-driven generator winding insulation failure detector, it is characterised in that：Including pulse power source module, signal detection
Module, Signal-regulated kinase, USB type data collecting card and laptop；Pulse power source module and tested wind-driven generator around
Group is connected, and signal detection module input terminal is connected with tested wind-driven generator winding, output end and Signal-regulated kinase input terminal
It is connected, Signal-regulated kinase output end is connected with USB type data collecting card analog signal input channel, and data collecting card passes through
USB data transmission line connects laptop.
2. the apparatus according to claim 1, it is characterised in that：The pulse power source module includes safety protective circuit, becomes
Volt circuit, voltage display circuit and high voltage pulse circuit；The safety protective circuit by be connected fuse, air switch and
Overcurrent relay forms；The transforming circuit includes the electronic pressure controller, step-up transformer and rectifier bridge being connected；The electricity
Pressure display circuit is made of high-voltage bleeder, detection circuit and the digital display meter head being connected；The high voltage pulse circuit includes filling
Resistance, storage capacitor, silicon controlled module, wave front resistance and tuning capacitance；Safety protective circuit input terminal is power grid 220V works
Frequency alternating current, output termination transforming circuit input terminal, transforming circuit output termination voltage display circuit, while and pulsed high-voltage
Road input terminal is connected.
3. the apparatus of claim 2, it is characterised in that：It is thin that the storage capacitor with tuning capacitance is all made of polypropylene
Film high-voltage pulse capacitance.
4. the apparatus of claim 2, it is characterised in that：The silicon controlled module is gone here and there by 10 silicon-controlled TYN1665
Connection composition.
5. the apparatus according to claim 1, it is characterised in that：The signal detection module is divided into voltage detection unit and electricity
Flow detection unit.
6. device according to claim 5, it is characterised in that：The voltage detection unit is RC divider, capacitance-resistance point
Depressor is in parallel with pulse power source module output end, and RC divider rated operational voltage is 10kV, intrinsic standoff ratio 1000:1, than
Example precision is ± 0.5%.
7. device according to claim 5, it is characterised in that：The current detecting unit is current transformer, and electric current is mutual
Sensor is connected on pulse power source module high-pressure side, and current transformer uses 101 HF current transformers of Pearson.
8. the apparatus according to claim 1, it is characterised in that：The Signal-regulated kinase is divided into voltage signal conditioning unit
With current signal conditioning unit, the two is consistent in circuit structure.
9. the apparatus according to claim 1, it is characterised in that：The sample rate of the USB type data collecting card should be greater than it
Twice or more of institute's acquisition pulse voltage and current signal bandwidth；The USB type data collecting card uses Ling Hua USB-1210.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820160380.9U CN207730875U (en) | 2018-01-30 | 2018-01-30 | A kind of wind-driven generator winding insulation failure detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820160380.9U CN207730875U (en) | 2018-01-30 | 2018-01-30 | A kind of wind-driven generator winding insulation failure detector |
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| Publication Number | Publication Date |
|---|---|
| CN207730875U true CN207730875U (en) | 2018-08-14 |
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| CN201820160380.9U Active CN207730875U (en) | 2018-01-30 | 2018-01-30 | A kind of wind-driven generator winding insulation failure detector |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109270471A (en) * | 2018-11-27 | 2019-01-25 | 张家港清研检测技术有限公司 | A kind of portable power battery device for fast detecting and system |
| CN110596547A (en) * | 2019-09-19 | 2019-12-20 | 上海电力大学 | On-line monitoring method for turn insulation state of inverter driving motor |
| CN112285558A (en) * | 2020-10-23 | 2021-01-29 | 上海电气风电集团股份有限公司 | Insulation fault discharge test device and method for wind driven generator winding |
| CN113484593A (en) * | 2021-06-16 | 2021-10-08 | 南京理工大学 | Data acquisition system for high-power pulse power supply |
| CN114280437A (en) * | 2021-12-27 | 2022-04-05 | 阳光电源股份有限公司 | Generator insulation detection device and method and wind power generation system |
-
2018
- 2018-01-30 CN CN201820160380.9U patent/CN207730875U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109270471A (en) * | 2018-11-27 | 2019-01-25 | 张家港清研检测技术有限公司 | A kind of portable power battery device for fast detecting and system |
| CN109270471B (en) * | 2018-11-27 | 2024-03-26 | 张家港清研检测技术有限公司 | Portable power battery rapid detection device and system |
| CN110596547A (en) * | 2019-09-19 | 2019-12-20 | 上海电力大学 | On-line monitoring method for turn insulation state of inverter driving motor |
| CN110596547B (en) * | 2019-09-19 | 2021-08-24 | 上海电力大学 | On-line monitoring method for turn insulation state of inverter driving motor |
| CN112285558A (en) * | 2020-10-23 | 2021-01-29 | 上海电气风电集团股份有限公司 | Insulation fault discharge test device and method for wind driven generator winding |
| CN113484593A (en) * | 2021-06-16 | 2021-10-08 | 南京理工大学 | Data acquisition system for high-power pulse power supply |
| CN114280437A (en) * | 2021-12-27 | 2022-04-05 | 阳光电源股份有限公司 | Generator insulation detection device and method and wind power generation system |
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