CN206193161U - A polarization depolarization current monitoring devices for oily cardboard - Google Patents
A polarization depolarization current monitoring devices for oily cardboard Download PDFInfo
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- CN206193161U CN206193161U CN201621041800.9U CN201621041800U CN206193161U CN 206193161 U CN206193161 U CN 206193161U CN 201621041800 U CN201621041800 U CN 201621041800U CN 206193161 U CN206193161 U CN 206193161U
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- module
- voltage
- oil immersion
- data acquisition
- power supply
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- Testing Relating To Insulation (AREA)
Abstract
The utility model relates to a polarization depolarization current monitoring devices for oily cardboard, including on -off control module, constant voltage power supply circuit module, data acquisition module, data transmission module and PC, on -off control module (1) is connected with constant voltage power supply circuit module (2), on -off control module (1) is connected with the required oily cardboard sample of test, it is connected with data acquisition module (3) to test required oily cardboard sample, constant voltage power supply circuit module (2) are connected with data acquisition module (3), data acquisition module (3) are connected with data transmission module (4), data transmission module (4) are connected with PC (5), this testing arrangement has realized the charge -discharge to oily cardboard sample through the design to constant voltage power supply circuit module, measures polarization depolarization current by data acquisition module again, passes to the PC through the data transmission module and demonstrates the image. This test method is simple and convenient, with low costs, has solved the problem that need build the power when oil -paper plate depolarization current tests on current phase.
Description
Technical field
The utility model is the polarization depolarization current monitoring device for oil immersion cardboard, belongs to transformer oil paper insulation system
System ageing management category.
Background technology
The safety of power system has close ties with the normal operation of power transformer, therefore assessment transformer oilpaper is exhausted
The ageing state of edge system is very necessary.Transformer Oil-Paper Insulation is composite insulation system, by insulating board and insulating oil
Two kinds of set of dielectrics into.Therefore oil immersion cardboard can be with the insulation situation inside analogue transformer, and its polarization depolarization current is supervised
Survey convenient, can effectively reflect the ageing state of transformer.
Polarization depolarization current monitoring technology is a kind of technology for studying dielectric time domain dielectric response, contains information rich
Richness, by analyze data and image rule, can be carried out rationally effectively in conjunction with Debye models to Transformer Insulation Aging state
Assessment.
At this stage for oil immersion cardboard polarization depolarization current measurement apparatus are fewer and high cost.The utility model is surveyed
The polarization depolarization current that trial assembly puts mainly for oil immersion cardboard is tested, the complete loop to test Power Management Design, and
Low cost.The trouble for building electric power loop is reduced when the polarization depolarization current of oil immersion cardboard is measured, the power supply is directly defeated
Go out the 200V DC voltages of stabilization so that test process is more convenient.
The content of the invention
The utility model provides a kind of polarization depolarization current monitoring device for oil immersion cardboard, solves at this stage
For the polarization problem that depolarization current device is fewer and cost is higher of oil immersion cardboard.
What the purpose of this utility model was realized in：A kind of polarization depolarization current for oil immersion cardboard monitors dress
Put, including switch control module, voltage-stabilized power supply return circuit module, data acquisition module, data transmission module, PC；The test
Device switch control module（1）With voltage-stabilized power supply return circuit module（2）Connection；Described test device switch control module（1）By
Multigroup time relay composition；The voltage-stabilized power supply return circuit module（2）Voltage is adjusted by rectification, stable-pressure device；The survey
Switch control module is put in trial assembly（1）It is connected with oil immersion cardboard sample needed for test；Oil immersion cardboard sample and number needed for the test
According to acquisition module（3）Connection；The voltage-stabilized power supply return circuit module（2）With data acquisition module（3）Connection；The data acquisition module
Block（3）With data transmission module（4）Connection；The data transmission module（4）With PC（5）Connection；Test device is by steady
The design of voltage source return circuit module, then use cooperatively with switch control module and to realize the charging/discharging voltage to oil immersion cardboard sample
With the control of time, then polarization depolarization current is measured by current measurement module, passing to PC through data transmission module shows
Image.
A kind of described polarization depolarization current monitoring device for oil immersion cardboard, it is characterised in that data acquisition module
（3）It is made up of ammeter, wave filter, A/D converter, usb circuit.
A kind of described polarization depolarization current monitoring device for oil immersion cardboard, it is characterised in that voltage-stabilized power supply loop
Module（2）Voltage be direct current 200V.Switch control module (1) is made up of to realize to surveyed oil immersion multigroup time relay
The control of the discharge and recharge time of cardboard sample.
A kind of polarization depolarization current monitoring device for oil immersion cardboard described further, it is characterised in that voltage stabilizing electricity
Resource loop module（2）220V alternating voltages are tuned into by 150V alternating voltages by using EI33 pressure regulators, by rectifier bridge
NBRIDGE1 is converted into DC voltage 200V, and exports burning voltage by voltage-stabiliser tube TL783C and Support Capacitor.
The utility model uses such scheme：Polarization depolarization current data obtained by experimental test can be shown through PC
Show to come, therefore the ageing state of transformer Oil-Paper Insulation assessed by analyzing oil-paper plate electrode depolarization current,
The dismounting to transformer is avoided, while reduce transformer stopping transport for a long time the loss for bringing.
Brief description of the drawings.
Fig. 1 apparatus structure schematic diagrams.
Fig. 2 data acquisition circuits.
Fig. 3 voltage of voltage regulation circuit diagrams.
The polarization current curve of Fig. 4 oil immersions cardboard difference ageing time.
The depolarization current curve of Fig. 5 oil immersions cardboard difference ageing time.
Specific embodiment.
In order to illustrate the practicability of this programme, below by specific experiment as a example by, and illustrated with reference to its accompanying drawing, it is a kind of
Polarization depolarization current monitoring device test for oil immersion cardboard comprises the following steps：
As shown in figure 1, a kind of polarization depolarization current monitoring device for oil immersion cardboard, including switch control module,
Voltage-stabilized power supply return circuit module, data acquisition module, data transmission module and PC；By test device switch control module（1）With
Voltage-stabilized power supply return circuit module（2）, oil immersion cardboard sample connection needed for test；By data acquisition module（3）With oil immersion needed for test
Cardboard sample, voltage-stabilized power supply return circuit module（2）, data transmission module（4）Connection；By data transmission module（4）With PC（5）Even
Connect；Its test result directly will be presented on PC.
Voltage-stabilized power supply return circuit module（2）220V alternating voltages are tuned into by 150V alternating voltages by using EI33 pressure regulators,
Being converted into DC voltage 200V by rectifier bridge NBRIDGE1, and stabilization electricity is exported by voltage-stabiliser tube TL783C and Support Capacitor
Pressure.Switch control module is the time relay, and the charge and discharge to sample is realized in the conducting by the time relay to circuit with shut-off
Electricity, so as to obtain the depolarization current that polarizes.
The charge and discharge process of the device is as follows.
Charging stage, K1 closures in test device switch control module, K2 is disconnected, and voltage-stabilized power supply loop is charged to sample,
Charging interval as t1 is set by the time relay（Generally 5000s）, data acquisition unit collection polarization current data, process
The treatment of data transmission module is simultaneously transferred to PC, shows image and data.
Discharge regime, K2 closures in test device switch control module, K1 disconnects, and sample discharges loop, by the time
Relay sets the charging interval as t2（Generally 5000s）, data acquisition unit collection depolarization current data, by data biography
The treatment of defeated module is simultaneously transferred to PC, shows image and data.
Application example.
Test is 1mm thick from thickness, and the square oil immersion cardboard of length of side 12cm has been carried out not respectively as test sample
With the test of ageing time, the polarization depolarization current under different ageing times is obtained.
Ageing time be respectively 0 day, 15 days, the oil immersion cardboard of 30 days provide 200V direct currents by voltage-stabilized power supply loop
Pressure, and the charging interval is controlled for 5000s by switch control module, then polarization current curve such as Fig. 4 is obtained by data acquisition module
It is shown.
By switch control module shut-off voltage-stabilized power supply loop, oil immersion cardboard sample discharges loop, controls its discharge time
It is 5000s, then ageing time is obtained by data acquisition module to be respectively 0 day, 15 days, 30 days depolarization current curve such as Fig. 5
It is shown.
As it will be easily appreciated by one skilled in the art that the polarization depolarization current monitoring device of this oil immersion cardboard is by voltage stabilizing
The design of electric power loop module, then it is electric to the discharge and recharge of oil immersion cardboard sample to realize with using cooperatively for switch control module
Pressure and the control of time, then polarization depolarization current is measured by current measurement module, passing to PC through data transmission module shows
Go out image, while also avoid the dismounting to transformer, reducing transformer and stop transport for a long time the loss for bringing.
Claims (4)
1. the polarization depolarization current monitoring device of oil immersion cardboard is used for, it is characterised in that：Switch control module（1）, voltage stabilizing electricity
Resource loop module（2）, data acquisition module（3）, data transmission module（4）, PC（5）；The test device switch control mould
Block（1）With voltage-stabilized power supply return circuit module（2）Connection；Described test device switch control unit（1）By multigroup time relay
Composition；The voltage-stabilized power supply return circuit module（2）Voltage is adjusted by rectification, stable-pressure device；The test device switch control
Module（1）It is connected with oil immersion cardboard sample needed for test；Oil immersion cardboard sample and data acquisition module needed for the test（3）Even
Connect；The voltage-stabilized power supply return circuit module（2）With data acquisition module（3）Connection；The data acquisition module（3）With data transfer
Module（4）Connection；The data transmission module（4）With PC（5）Connection；Test device is by voltage-stabilized power supply return circuit module
Design, then used cooperatively with switch control module, and then realize to the charging/discharging voltage of oil immersion cardboard sample and time
Control, then polarization depolarization current is measured by current measurement module, passing to PC through data transmission module shows image.
2. the polarization depolarization current monitoring device for oil immersion cardboard according to claim 1, it is characterised in that data
Acquisition module（3）It is made up of ammeter, wave filter, A/D converter, USB interface.
3. the polarization depolarization current monitoring device for oil immersion cardboard according to claim 1, it is characterised in that voltage stabilizing
Electric power loop module（2）Output voltage be direct current 200V, switch control module (1) is made up of multigroup time relay, realizes
To the discharge and recharge time control of surveyed oil immersion cardboard sample.
4. the polarization depolarization current monitoring device for oil immersion cardboard according to claim 1, it is characterised in that voltage stabilizing
Electric power loop module（2）220V alternating voltages are tuned into by 150V alternating voltages by using EI33 pressure regulators, by rectifier bridge
NBRIDGE1 is converted into DC voltage 200V, and exports burning voltage by voltage-stabiliser tube TL783C and Support Capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621041800.9U CN206193161U (en) | 2016-09-07 | 2016-09-07 | A polarization depolarization current monitoring devices for oily cardboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621041800.9U CN206193161U (en) | 2016-09-07 | 2016-09-07 | A polarization depolarization current monitoring devices for oily cardboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206193161U true CN206193161U (en) | 2017-05-24 |
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ID=58728293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621041800.9U Expired - Fee Related CN206193161U (en) | 2016-09-07 | 2016-09-07 | A polarization depolarization current monitoring devices for oily cardboard |
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| Country | Link |
|---|---|
| CN (1) | CN206193161U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108680834A (en) * | 2018-04-12 | 2018-10-19 | 福建工程学院 | A kind of detection method of the transformer insulation state based on PDC |
-
2016
- 2016-09-07 CN CN201621041800.9U patent/CN206193161U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108680834A (en) * | 2018-04-12 | 2018-10-19 | 福建工程学院 | A kind of detection method of the transformer insulation state based on PDC |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170524 Termination date: 20170907 |
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| CF01 | Termination of patent right due to non-payment of annual fee |