CN108279284A - A kind of transformer moisture tester - Google Patents
A kind of transformer moisture tester Download PDFInfo
- Publication number
- CN108279284A CN108279284A CN201810008449.0A CN201810008449A CN108279284A CN 108279284 A CN108279284 A CN 108279284A CN 201810008449 A CN201810008449 A CN 201810008449A CN 108279284 A CN108279284 A CN 108279284A
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- China
- Prior art keywords
- transformer
- main frame
- measurement device
- moisture tester
- domain measurement
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Links
- 238000012360 testing method Methods 0.000 claims abstract description 43
- 238000005259 measurement Methods 0.000 claims description 31
- 230000004044 response Effects 0.000 claims description 23
- 238000009413 insulation Methods 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 abstract description 4
- 230000032683 aging Effects 0.000 abstract description 3
- 239000006227 byproduct Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001566 impedance spectroscopy Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000028161 membrane depolarization Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
Abstract
The invention belongs to electric power detection device technical fields more particularly to a kind of transformer moisture to try instrument.The present invention includes test main frame, USB interface, computer notebook, calibration equipment and tested transformer；Wherein：Test main frame is connected by USB interface with computer notebook, and calibration equipment and tested transformer are connected with test main frame respectively.Therefore the mode that the present invention is combined as a result of waving map and frequency domain test significantly shortens test period.Using digitally enhanced filter, reduce influence of the external interference for conclusion (of pressure testing).System is efficiently tested using simplicity, to which expertise and intuitive customer interface are combined, while having used backoff algorithm, the influence by product after aging for moisture is removed, to obtain more true moisture.Due to using calibration equipment, the judgement to make mistake can be done for moisture to avoid due to the problem of transformer moisture tester itself.
Description
Technical field
The invention belongs to electric power detection device technical fields more particularly to a kind of transformer moisture to try instrument.
Background technology
Oil-immersed power transformer is an important component during power transmission, is related to the safety and stability of power grid
Operation, therefore, has a very important significance the evaluation of the state of insulation of oil-immersed power transformer.Moisture, which is used as, to be caused
One of an important factor for oil-immersed power transformer insulation ag(e)ing is a timely important references for finding Transformer Insulation Aging
Amount.
Currently, the lossless detection method based on dielectric response theory, the detection method of transformer oil paper-like state have reply
Voltage method, polarization/depolarization current method and dielectric spectroscopy method, they can reflect the water content of oilpaper in transformer, from
And analyze transformer insulated state, but they that there is precision is not high, experiment examination overlong time, for field test environment
More demanding feature.
Invention content
For the above-mentioned prior art the problem of, the present invention provides a kind of transformer moistures to try instrument.Its mesh
Be to provide for that a kind of strong antijamming capability, high certainty of measurement, test speed are fast and the clear understandable transformation of conclusion (of pressure testing)
Device moisture tester.
In order to achieve the above-mentioned object of the invention, the present invention is achieved by the following technical solutions：
A kind of transformer moisture tester, including test main frame, USB interface, computer notebook, calibration equipment and tested
Try transformer；Wherein：Test main frame is connected by USB interface with computer notebook, calibration equipment and tested transformer point
It is not connected with test main frame.
The calibration equipment is connected by test cable with test main frame, is tested transformer and is led by p-wire and test
Machine is connected.
The test main frame includes shell, is provided with the time domain measurement device being sequentially connected, frequency domain measurement inside housings
Device, digiverter and digital filter；Digital filter is connected through USB interface with computer notebook by data line
It connects.
The time domain measurement device and frequency domain measurement device are used to generate the frequency conversion voltage of test transformer dielectric response
Signal, digiverter are used to acquire the dielectric response signal of the paper oil insulation of tested inside transformer, and medium is rung
Induction signal sends the digital filter to；Digital filter is used to receive and process the paper oil insulation of digiverter transmission
Dielectric response signal, while sending dielectric response signal to computer notebook.
The time domain measurement device is used to measure the data of 10 μ Hz to 0.1Hz, and frequency domain measurement device is for measuring 0.1Hz
To the data of 5kHz.
The paper oil insulation that the computer notebook is used to receive the tested inside transformer that digital filter transmission comes is situated between
Matter response signal, and processing forms the dielectric response collection of illustrative plates of tested transformer, while showing the paper insulated moisture of transformer oil
Content.
The accuracy of the time domain measurement device is in 0.5% ± 1pA.
The measurement voltage of the frequency domain measurement device is selected as 200V.
The bandwidth of the digital filter is the 0.5%-1% being measured.
The processor of the computer notebook is Intel Core i7 processor.
Compared with prior art, have the following advantages and beneficial effect one or several of the present invention：
The transformer moisture tester of the present invention, as a result of the mode that waving map and frequency domain test are combined, because
This, significantly shortens test period.
The transformer moisture tester of the present invention as a result of digitally enhanced filter, therefore reduces outer
To interfere the influence for conclusion (of pressure testing).
The transformer moisture tester of the present invention, due to the efficient test software using easy, to expert
Knowledge and intuitive customer interface combine, while having used backoff algorithm, by influence of the product after aging for moisture into
Removal is gone, to obtain more true moisture.
The transformer moisture tester of the present invention, as a result of calibration equipment, so as to avoid due to transformation
The problem of device moisture tester itself, does moisture the judgement to make mistake.
In the following with reference to the drawings and specific embodiments, further description and explanation are subject to the present invention, but are not implemented by this
Example is limited.
Description of the drawings
Fig. 1 is the functional block diagram of this transformer moisture tester.
In figure：Test main frame 1, USB interface 2, computer notebook 3, calibration equipment 4 are tested transformer 5, time domain measurement
Device 101, frequency domain measurement device 102, digiverter 103, digital filter 104.
Specific implementation mode
As shown in FIG. 1, FIG. 1 is the functional block diagrams of this transformer moisture tester.The present invention is a kind of transformer water
Content is divided to try instrument, including：Test main frame 1, USB interface 2, computer notebook 3, calibration equipment 4 and tested transformer 5.Its
In：Test main frame 1 is connected by USB interface 2 with computer notebook 3, and the portability of equipment is improved.Calibration equipment 4 passes through
Test cable is connected with test main frame 1, the fault detect of the test cable used for test main frame 1 and test, to survey
Examination personnel debug in time reduces influence for test result.Tested transformer 5 passes through p-wire and 1 phase of test main frame
Even.
Test main frame 1 of the present invention includes shell, is provided with the time domain measurement device being sequentially connected inside housings
101, frequency domain measurement device 102, digiverter 103 and digital filter 104.Digital filter 104 is passed through by data line
USB interface 2 is connected with computer notebook 3.
The time domain measurement device 101 and frequency domain measurement device 102 are used to generate the change of test transformer dielectric response
Frequency voltage signal, digiverter 103 are used to acquire the dielectric response signal of the paper oil insulation inside tested transformer 5,
And send dielectric response signal to the digital filter 104.Digital filter 104 is for receiving and processing digital-to-analogue conversion dress
Set the paper oil insulation dielectric response signal of 103 transmission.
The time domain measurement device 101 is used to measure the data of 10 μ Hz to 0.1Hz, and frequency domain measurement device 102 is for measuring
The data of 0.1Hz to 5kHz.
The digital filter 104 is used to receive and process the tested transformer 5 that the transmission of digiverter 103 comes
Dielectric response signal, while sending 5 dielectric response signal of tested transformer to computer notebook 3.
The computer notebook 3, connect with test main frame 1, the tested change come for receiving the transmission of digital filter 104
5 dielectric response signal of depressor, and processing forms the dielectric response collection of illustrative plates of tested transformer 5, while showing that transformer oilpaper is exhausted
The moisture of edge.
As the preferred embodiment of above-described embodiment, the accuracy of time domain measurement device 101 ensures in 0.5% ± 1pA
In the test accuracy of low-frequency range.
As the preferred embodiment of above-described embodiment, the measurement voltage of frequency domain measurement device 102 is selected as 200V, ensures
The measurement of high band.
As the preferred embodiment of above-described embodiment, the bandwidth of the digital filter 104 is the 0.5%- being measured
1%, even if there are stronger interference signals in test environment, the overall permanence analysis of dielectric response collection of illustrative plates will not be influenced.
As the preferred embodiment of above-described embodiment, the processor of the computer notebook 3 is Intel Core i7 processor, greatly
Improve arithmetic speed greatly.
Finally it should be noted that：Above-described embodiments are merely to illustrate the technical scheme, rather than to it
Limitation, although the present invention is described in detail referring to the foregoing embodiments, it will be understood by those of ordinary skill in the art that,
It can still modify to the technical solution recorded in preceding embodiment, or be carried out to which part or all technical features
Equivalent replacement, and these modifications or substitutions, various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution
Range.
Claims (10)
1. a kind of transformer moisture tester, it is characterized in that：Including test main frame（1）, USB interface（2）, computer notebook
（3）, calibration equipment（4）And tested transformer（5）；Wherein：Test main frame（1）Pass through USB interface（2）With computer notebook
（3）It is connected, calibration equipment（4）With tested transformer（5）Respectively with test main frame（1）It is connected.
2. a kind of transformer moisture tester according to claim 1, it is characterized in that：The calibration equipment（4）It is logical
Cross test cable and test main frame（1）It is connected, is tested transformer（5）Pass through p-wire and test main frame（1）It is connected.
3. a kind of transformer moisture tester according to claim 1, it is characterized in that：The test main frame（1）Packet
Shell is included, is provided with the time domain measurement device being sequentially connected inside housings（101）, frequency domain measurement device（102）, digital-to-analogue conversion
Device（103）And digital filter（104）；Digital filter（104）By data line through USB interface（2）With computer notebook
（3）It is connected.
4. a kind of transformer moisture tester according to claim 1, it is characterized in that：The time domain measurement device
（101）And frequency domain measurement device（102）Frequency conversion voltage signal for generating test transformer dielectric response, digital-to-analogue conversion dress
It sets（103）For acquiring tested transformer（5）The dielectric response signal of internal paper oil insulation, and dielectric response signal is passed
Give the digital filter（104）；Digital filter（104）For receiving and processing digiverter（103）Transmission
Paper oil insulation dielectric response signal, while sending dielectric response signal to computer notebook（3）.
5. a kind of transformer moisture tester according to claim 1, it is characterized in that：The time domain measurement device
（101）Data for measuring 10 μ Hz to 0.1Hz, frequency domain measurement device（102）Data for measuring 0.1Hz to 5kHz.
6. a kind of transformer moisture tester according to claim 1, it is characterized in that：The computer notebook（3）
For receiving digital filter（104）The tested transformer that transmission comes（5）Internal paper oil insulation dielectric response signal, and locate
Reason, which is formed, is tested transformer（5）Dielectric response collection of illustrative plates, while showing the paper insulated moisture of transformer oil.
7. a kind of transformer moisture tester according to claim 1, it is characterized in that：The time domain measurement device
（101）Accuracy in 0.5% ± 1pA.
8. a kind of transformer moisture tester according to claim 1, it is characterized in that：The frequency domain measurement device
（102）Measurement voltage be selected as 200V.
9. a kind of transformer moisture tester according to claim 1, it is characterized in that：The digital filter
（104）Bandwidth be measured 0.5%-1%.
10. a kind of transformer moisture tester according to claim 1, it is characterized in that：The computer notebook（3）
Processor be Intel Core i7 processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810008449.0A CN108279284A (en) | 2018-01-04 | 2018-01-04 | A kind of transformer moisture tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810008449.0A CN108279284A (en) | 2018-01-04 | 2018-01-04 | A kind of transformer moisture tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108279284A true CN108279284A (en) | 2018-07-13 |
Family
ID=62803069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810008449.0A Pending CN108279284A (en) | 2018-01-04 | 2018-01-04 | A kind of transformer moisture tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108279284A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109188104A (en) * | 2018-10-12 | 2019-01-11 | 国网陕西省电力公司电力科学研究院 | The dielectric response of paper oil insulation casing not blackouts monitoring system and method |
| CN110726880A (en) * | 2019-10-24 | 2020-01-24 | 国网重庆市电力公司电力科学研究院 | Method for evaluating aging state of capacitive bushing insulation system based on frequency domain and time domain |
Citations (4)
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|---|---|---|---|---|
| CN102818974A (en) * | 2012-07-13 | 2012-12-12 | 云南电力试验研究院（集团）有限公司电力研究院 | Method for evaluating aging degree of main insulation of transformer |
| CN103809086A (en) * | 2013-12-09 | 2014-05-21 | 济源市科灵电器有限责任公司 | Power transformer damp detection method based on frequency domain Cole-Davidson model |
| CN104155528A (en) * | 2014-08-19 | 2014-11-19 | 国家电网公司 | Method for testing transformer oil paper insulation frequency domain dielectric response and device thereof |
| CN107290399A (en) * | 2017-08-18 | 2017-10-24 | 国网辽宁省电力有限公司电力科学研究院 | Transformer moisture measurement device based on PDC/FDS dielectric response methods |
-
2018
- 2018-01-04 CN CN201810008449.0A patent/CN108279284A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102818974A (en) * | 2012-07-13 | 2012-12-12 | 云南电力试验研究院（集团）有限公司电力研究院 | Method for evaluating aging degree of main insulation of transformer |
| CN103809086A (en) * | 2013-12-09 | 2014-05-21 | 济源市科灵电器有限责任公司 | Power transformer damp detection method based on frequency domain Cole-Davidson model |
| CN104155528A (en) * | 2014-08-19 | 2014-11-19 | 国家电网公司 | Method for testing transformer oil paper insulation frequency domain dielectric response and device thereof |
| CN107290399A (en) * | 2017-08-18 | 2017-10-24 | 国网辽宁省电力有限公司电力科学研究院 | Transformer moisture measurement device based on PDC/FDS dielectric response methods |
Non-Patent Citations (1)
| Title |
|---|
| 施广宇等: "大型电力变压器油纸绝缘微水含量定量评估检测技术", 《高压电器》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109188104A (en) * | 2018-10-12 | 2019-01-11 | 国网陕西省电力公司电力科学研究院 | The dielectric response of paper oil insulation casing not blackouts monitoring system and method |
| CN110726880A (en) * | 2019-10-24 | 2020-01-24 | 国网重庆市电力公司电力科学研究院 | Method for evaluating aging state of capacitive bushing insulation system based on frequency domain and time domain |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20180713 |