CN107290399A - Transformer moisture measurement device based on PDC/FDS dielectric response methods - Google Patents
Transformer moisture measurement device based on PDC/FDS dielectric response methods Download PDFInfo
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- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
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Abstract
Become attached to aging technical field, more particularly to a kind of transformer moisture measurement device based on PDC/FDS dielectric response methods the invention belongs to transformer.Capacity oil sample cup is waited provided with two in irony casing, for holding with a batch of tested transformer oil sample, test electrode is directly connected to conducting rod in each oil sample cup；The end cap up and down of oil sample cup is equipped with oil sample cup lid；Oil sample cup lower section is provided with end connection device casing under oil sample cup groove, oil sample cup groove；Hole of the oil sample cup groove-bottom provided with insertion is used to the lower end of conducting rod being connected with pressurization wire through hole；Measurement terminal is clipped on conducting rod, and measurement terminal tail end controls circuit input end by measuring PDC/FDS measuring systems in electric wire connecting test circuit, and PDC/FDS measuring system control circuit output ends connect input and output client input by com interface data wire.While the present invention realizes that the testing time is significantly reduced, it is ensured that frequency domain it is comprehensive.
Description
Technical field
Become attached to aging technical field the invention belongs to transformer, more particularly to it is a kind of based on PDC/FDS dielectric response methods
Transformer moisture measurement device.
Background technology
Moisture has a strong impact on to the electrical endurance of transformer insulating system and mechanical life in oil-immersed power transformer,
And accelerating paper oil insulation material aging, harm transformer safety is run, and Measurement by Dielectric Method is exhausted currently for transformer oilpaper
The main application method of edge diagnosis, but have that time-consuming or frequency domain not enough wide defect, simple efficient transformer is lacked at present
Middle moisture measurement device.
The content of the invention
For technical problem present in above-mentioned prior art, the present invention provides a kind of based on PDC/FDS dielectric response methods
Transformer moisture measurement device, the purpose of invention be to build can the dielectric of quick measuring transformer Oil-Paper Insulation ring
Should, the water content number in the direct basis for estimation insulation system of the aging insulation degree of quick measurement free voltage grade transformer
According to.
For achieving the above object, the present invention adopts the following technical scheme that to realize：
A kind of transformer moisture measurement device based on PDC/FDS dielectric response methods, is that two are provided with irony casing
Deng capacity oil sample cup, two are waited capacity oil sample cup to be used to hold with a batch of tested transformer oil sample, and each oil sample cup is built-in
There are test electrode and conducting rod, test electrode is directly connected to conducting rod, conducting rod fixes position of the test electrode in oil sample cup
Put, conducting rod UNICOM test electrode and current supply line；The end cap up and down of oil sample cup is equipped with oil sample cup lid；Oil sample cup lower section is provided with
End connection device casing under oil sample cup groove, oil sample cup groove；The open upper end of oil sample cup groove is used to place oil sample cup, oil sample
Hole of the bottom provided with insertion of cup groove is used to the lower end of conducting rod through hole with pressurization wire being connected；Measurement terminal
It is clipped on conducting rod, the tail end of measurement terminal is wired to by measurement is located at PDC/ in the test circuit of irony casing side
FDS measuring systems control the input of circuit, and the output end of PDC/FDS measuring systems control circuit passes through com interface data wire
Connect the input of input and output client.
The oil sample cup lid of the upper and lower side is fixed with anchorage clip, and the measurement terminal is movable butterfly clamp.
The PDC/FDS measuring systems control circuit includes frequency response data acquisition module, frequency response control module, PDC/FDS
Data conversion integrates module, five parts of Data Analysis Services module and input-output system and is sequentially connected composition.
The frequency response data acquisition module is on-site detecting unit, and the module samples data include frequency response voltage data
With pressurization voltage data, frequency response control module is concatenated into by winding displacement, frequency response voltage data is taken by measurement terminal sampling
, pressurization voltage data is supplied to test electrode by test circuit, and module is integrated while sending to data conversion.
The frequency response control module includes PDC test circuits and FDS test circuits, and both control respectively to be connected in parallel
Two kinds of metering systems of application PDC and FDS of measurement terminal and test electrode are pressurizeed；Frequency response control module realizes measurement terminal
With the measurement control of test electrode, test electrode is provided by 10 by PDC test circuits-6Frequency pair needed in the range of Hz-1Hz
Magnitude of voltage is answered, and carries out response data measurement；Frequency needed for FDS test circuits are provided in 1Hz range above test electrode
Corresponding voltage value, and carry out response data measurement.
The PDC/FDS data conversions integrate module by AD data converters, time domain/frequency domain data change-over circuit and data
Integrated circuit is constituted, AD data converters concatenation time domain/frequency domain data change-over circuit, time domain/frequency domain data change-over circuit concatenation
Data Integration circuit, data are transmitted successively；The electronic signal obtained from frequency response control module is changed into several by AD data converters
After word signal, time domain data is converted to same frequency domain data by time domain/frequency domain data change-over circuit, finally by Data Integration electricity
What two sections of frequency domain datas were realized on road combines to form a complete frequency response collection of illustrative plates.
The Data Analysis Services module includes database, data comparison module；Database concatenated data read writing module,
Paper insulation thickness x, y for storing transformer Oil-Paper Insulation, water content in oil content standard value spectral response data, environment
Temperature, water content in oil content data；Data comparison module completes correspondence environment by all data in read operation acquisition database
Modeling at temperature and transformer insulated geometric parameter, and the comparative analysis of modeling data and measurement data is carried out, it is most oily at last
Middle analysis of moisture content result is sent to input/output client；X-Y model computational algorithms in data comparison module：To integrate
Data result is target complex, and Water in oil amount standard value is calculated by database data using particle cluster algorithm, with integrating number
Water in oil value and transformer insulating system degree of aging are drawn according to Comparative result analysis.
The input-output system includes the equipment, data read/write such as data read/write module, display, printer and keyboard
Module is connected with display, printer and keyboard equipment respectively by USB connecting lines, realize test result show, print and
The input function of condition data.
X numerical value in the X-Y models computational algorithm in X-Y data is the supports insulative plate in transformer insulated geometry
Radial thickness data, numerical value Y be transformer insulated geometry in baffle plate radical length data.
A kind of method that transformer moisture measurement device based on PDC/FDS dielectric response methods is tested, it is specific real
Apply step as follows：
（1）The transformer insulation oil equivalent of required detection is placed in two oil sample cups, it is ensured that test electrode is completely immersed in oil
After in sample cup, oil sample cup lid is covered, tightening anchorage clip ensures that rigid contact is non-leakage between oil sample cup and oil sample cup lid；
（2）Measurement terminal is clipped on oil sample cup upper part of the cover conducting rod, it is ensured that contact good between measurement terminal and conducting rod, can
Validity Test leakage current；
（3）Turn on the power and be powered for measuring system, check whether display screen has display, it is ensured that system power supply state is normally entered
OK；
（4）Inspection system display interface data, it is ensured that working state of system is normal；
（5）Transformer insulated geometric data X-Y and ambient temperature data are sequentially input, it is ensured that system can complete X-Y data
Modeling；
（6）Click on and start testing button progress frequency sound test, test after terminating by display screen and printer record test result.
Advantages of the present invention and effect are：
The present invention takes into full account environment temperature and insulation physical dimension, i.e. oil and cardboard ratio, to interfacial polarization to result of calculation
Influence factor, by limit time domain PDC tan delta curve test carry out in low frequency, up to 0.1Hz, for higher than 0.1Hz
Partial tan delta curve, is tested using frequency domain FDS modes, it is to avoid<0.1Hz low-frequency test, realizes testing time quilt
Ensure the comprehensive of frequency domain while significantly reduction.Target sets up the full frequency band tan delta curve survey for meeting 1000kHz to 0.001MHz
Examination, the testing time will be dropped in 2h, and the measurement request of water content in full frequency band high-precision rapid survey transformer oil, device has
The characteristics of efficiently and accurately is widely applicable, suitable in power industry popularization and application.
Below in conjunction with the accompanying drawings and specific embodiment, the present invention is further detailed explanation, but not by the present embodiment institute
Limit.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is fundamental diagram of the present invention；
Fig. 3 is X-Y data explanation figure in X-Y model computation modules.
In figure：Irony casing 1, conducting rod 2, anchorage clip 3, oil sample cup lid 4, oil sample cup 5, measurement terminal 6 tests electrode 7,
Oil sample cup groove 8, pressured conductive line 9 measures conductor wire 10, and test circuit 11, PDC/FDS measuring systems control circuit 12 is defeated
Enter to export client 13.
Embodiment
The present invention is a kind of transformer moisture measurement device based on PDC/FDS dielectric response methods, as shown in figure 1, Fig. 1
For schematic structural view of the invention.Two are provided with irony casing 1 and waits capacity oil sample cup 5, two are waited capacity oil sample cup 5 to be used to contain
Put with a batch of tested transformer oil sample, each oil sample cup 5 is built with test electrode 7 and conducting rod 2, and test electrode 7 is with leading
Electric pole 2 is directly connected to, and test electrode 7 is used for voltage needed for applying to oil sample, and conducting rod 2 fixes test electrode 7 in oil sample cup 5
Position, the UNICOM of conducting rod 2 test electrode 7 and current supply line 9.
The upper and lower side of oil sample cup 5 is stamped oil sample cup lid 4, and the oil sample cup lid 4 of upper and lower side is consolidated with anchorage clip 3
It is fixed；The lower section of oil sample cup 5 is oil sample cup groove 8, the oil sample cup fixation of end connection device casing 1 of groove 8 times, oil sample cup groove
8 open upper end is used to place oil sample cup 5, and the bottom of oil sample cup groove 8 is provided with the hole of insertion, for by under conducting rod 2
End is connected through hole with pressurization wire 9；Measurement terminal 6 is movable butterfly clamp, and measurement terminal 6 is clipped in the upper end of conducting rod 2
Part, the response data for measuring oil sample, and can conveniently take down after a measurement；The tail end of measurement terminal 6 is by measuring electric wire
10 are connected to the input that PDC/FDS measuring systems in test circuit 11 control circuit 12.
Wherein, PDC is polarization depolarization current method, and FDS is dielectric and magnetic measuring method, is compare main flow at present two kinds
The method of measuring transformer state of insulation.
As shown in Fig. 2 Fig. 2 is fundamental diagram of the present invention.The right side of irony casing 1 is test circuit 11, test circuit 11
It is interior to control circuit 12 and input and output client 13 including PDC/FDS measuring systems, PDC/FDS measuring systems control circuit 12
Output end connects the input of input and output client 13 by com interface data wire, and input and output client 13 is used to input
Required parameter and display test result.
The PDC/FDS measuring systems control circuit 12 includes frequency response data acquisition module, frequency response control module, PDC/
FDS data conversions integrate module, five parts of Data Analysis Services module and input-output system and are sequentially connected composition.
Wherein, frequency response data acquisition module is on-site detecting unit, and the module samples data include frequency response voltage number
According to pressurization voltage data, frequency response control module is concatenated into by winding displacement.Frequency response voltage data is sampled by measurement terminal
Obtain, pressurization voltage data is supplied to test electrode by test circuit, and module is integrated while sending to data conversion.Frequency response is surveyed
Controlling module includes PDC test circuits and FDS test circuits, and both control measurement terminal and test electrode to be connected in parallel, respectively
Two kinds of metering systems of application PDC and FDS pressurizeed.Frequency response control module realizes measurement terminal and test electricity
The measurement control of pole, is provided by 10 test electrode by PDC test circuits-6Frequency correspondence needed in the range of Hz-1Hz
Magnitude of voltage, and carry out response data measurement.Frequency pair needed for FDS test circuits are provided in 1Hz range above test electrode
Magnitude of voltage is answered, and carries out response data measurement.PDC/FDS data conversions integrate module by AD data converters, time domain/frequency domain number
Constituted according to change-over circuit and data integrated circuit, AD data converters concatenation time domain/frequency domain data change-over circuit, time domain/frequency domain
Data converting circuit concatenated data integrated circuit, data are transmitted successively.The electronic signal obtained by frequency response control module passes through AD
Data converter is changed into after data signal, and time domain data is converted to same frequency domain data by time domain/frequency domain data change-over circuit,
Finally a complete frequency response collection of illustrative plates is combined to form by two sections of frequency domain datas of Data Integration circuit realiration.
Data Analysis Services module includes database, data comparison module.Database concatenated data read writing module, be used for
Store paper insulation thickness x, y of transformer Oil-Paper Insulation, water content in oil content standard value spectral response data, environment temperature
Degree, water content in oil content data.Data comparison module completes correspondence environment temperature by all data in read operation acquisition database
Modeling under degree and transformer insulated geometric parameter, and the comparative analysis of modeling data and measurement data is carried out, most at last in oil
Analysis of moisture content result is sent to input/output client；X-Y model computational algorithms in data comparison module：To integrate number
It is target complex according to result, Water in oil amount standard value is calculated by database data using particle cluster algorithm, with integral data
Comparative result analysis draws Water in oil value and transformer insulating system degree of aging.
The input-output system includes the equipment, data read/write such as data read/write module, display, printer and keyboard
Module is connected with display, printer and keyboard equipment respectively by USB connecting lines, realize test result show, print and
The input function of condition data.
As shown in figure 3, Fig. 3 is X-Y data explanation figures in X-Y model computational algorithms in data comparison module.In X-Y data
X numerical value be transformer insulated geometry in supports insulative plate radial thickness data, numerical value Y be transformer insulated geometry in
The radical length data of baffle plate.
A kind of method tested using transformer moisture measurement device based on PDC/FDS dielectric response methods, tool
Body implementation steps are as follows：
（1）The transformer insulation oil equivalent of required detection is placed in two oil sample cups, it is ensured that test electrode is completely immersed in oil
After in sample cup, oil sample cup lid is covered, tightening anchorage clip ensures that rigid contact is non-leakage between oil sample cup and oil sample cup lid；
（2）Measurement terminal is clipped on oil sample cup upper part of the cover conducting rod, it is ensured that contact good between measurement terminal and conducting rod, can
Validity Test leakage current；
（3）Turn on the power and be powered for measuring system, check whether display screen has display, it is ensured that system power supply state is normally entered
OK；
（4）Inspection system display interface data, it is ensured that working state of system is normal；
（5）Transformer insulated geometric data X-Y and ambient temperature data are sequentially input, it is ensured that system can complete X-Y data
Modeling；
（6）Click on and start testing button progress frequency sound test, test after terminating by display screen and printer record test result.
Above-mentioned embodiment is the preferred embodiments of the present invention, can not be limited the invention, can be according to this
The technical scheme of invention determines specific embodiment with actual conditions, other any for away from technical scheme
And the change made or other equivalent substitute modes, it is included within protection scope of the present invention.
Claims (10)
1. a kind of transformer moisture measurement device based on PDC/FDS dielectric response methods, it is characterized in that：In irony casing（1）
Inside it is provided with two and waits capacity oil sample cup（5）, two are waited capacity oil sample cup（5）For holding with a batch of tested transformer oil
Sample, each oil sample cup（5）Built with test electrode（7）And conducting rod（2）, test electrode（7）With conducting rod（2）It is directly connected to,
Conducting rod（2）Fixed test electrode（7）In oil sample cup（5）In position, conducting rod（2）UNICOM tests electrode（7）Led with power supply
Line（9）；Oil sample cup（5）End cap up and down be equipped with oil sample cup lid（4）；Oil sample cup（5）Lower section is provided with oil sample cup groove（8）, oil
Sample cup groove（8）Lower end connection device casing（1）；Oil sample cup groove（8）Open upper end be used for place oil sample cup（5）, oil sample
Cup groove（8）Hole of the bottom provided with insertion be used for conducting rod（2）Lower end through hole with pressurization wire（9）It is connected
Connect；Measurement terminal（6）It is clipped in conducting rod（2）On, measurement terminal（6）Tail end by measuring electric wire（10）It is connected to and is located at irony
Casing（1）The test circuit of side（11）Middle PDC/FDS measuring systems control circuit（12）Input, PDC/FDS measurement system
System control circuit（12）Output end pass through com interface data wire connect input and output client（13）Input.
2. a kind of transformer moisture measurement device based on PDC/FDS dielectric response methods according to claim 1, it is special
Levying is：The oil sample cup lid of the upper and lower side（4）Use anchorage clip（3）It is fixed, the measurement terminal（6）For movable butterfly
Folder.
3. a kind of transformer moisture measurement device based on PDC/FDS dielectric response methods according to claim 1, it is special
Levying is：The PDC/FDS measuring systems control circuit（12）Including frequency response data acquisition module, frequency response control module, PDC/FDS
Data conversion integrates module, five parts of Data Analysis Services module and input-output system and is sequentially connected composition.
4. a kind of transformer moisture measurement device based on PDC/FDS dielectric response methods according to claim 3, it is special
Levying is：The frequency response data acquisition module be on-site detecting unit, the module samples data include frequency response voltage data and
Pressurizeed voltage data, and frequency response control module is concatenated into by winding displacement, and frequency response voltage data is taken by measurement terminal sampling
, pressurization voltage data is supplied to test electrode by test circuit, and module is integrated while sending to data conversion.
5. a kind of transformer moisture measurement device based on PDC/FDS dielectric response methods according to claim 3, it is special
Levying is：The frequency response control module includes PDC test circuits and FDS test circuits, and both is are connected in parallel, control measurement respectively
Two kinds of metering systems of application PDC and FDS of terminal and test electrode are pressurizeed;Frequency response control module realize measurement terminal and
The measurement control of electrode is tested, test electrode is provided by 10 by PDC test circuits-6Frequency correspondence needed in the range of Hz-1Hz
Magnitude of voltage, and carry out response data measurement；Frequency pair needed for FDS test circuits are provided in 1Hz range above test electrode
Magnitude of voltage is answered, and carries out response data measurement.
6. a kind of transformer moisture measurement device based on PDC/FDS dielectric response methods according to claim 3, it is special
Levying is：It is whole by AD data converters, time domain/frequency domain data change-over circuit and data that the PDC/FDS data conversions integrate module
Close circuit composition, AD data converters concatenation time domain/frequency domain data change-over circuit, time domain/frequency domain data change-over circuit concatenation number
According to integrated circuit, data are transmitted successively；The electronic signal obtained from frequency response control module is changed into numeral by AD data converters
After signal, time domain data is converted to same frequency domain data by time domain/frequency domain data change-over circuit, finally by Data Integration circuit
That realizes two sections of frequency domain datas combines to form a complete frequency response collection of illustrative plates.
7. a kind of transformer moisture measurement device based on PDC/FDS dielectric response methods according to claim 3, it is special
Levying is：The Data Analysis Services module includes database, data comparison module；Database concatenated data read writing module, be used for
Store paper insulation thickness x, y of transformer Oil-Paper Insulation, water content in oil content standard value spectral response data, environment temperature
Degree, water content in oil content data；Data comparison module completes correspondence environment temperature by all data in read operation acquisition database
Modeling under degree and transformer insulated geometric parameter, and the comparative analysis of modeling data and measurement data is carried out, most at last in oil
Analysis of moisture content result is sent to input/output client；X-Y model computational algorithms in data comparison module：To integrate number
It is target complex according to result, Water in oil amount standard value is calculated by database data using particle cluster algorithm, with integral data
Comparative result analysis draws Water in oil value and transformer insulating system degree of aging.
8. a kind of transformer moisture measurement device based on PDC/FDS dielectric response methods according to claim 3, it is special
Levying is：The input-output system includes the equipment, data read/write mould such as data read/write module, display, printer and keyboard
Block is connected with display, printer and keyboard equipment respectively by USB connecting lines, realizes that test result shows, printed and bar
The input function of number of packages evidence.
9. a kind of transformer moisture measurement device based on PDC/FDS dielectric response methods according to claim 7, it is special
Levying is：X numerical value in the X-Y models computational algorithm in X-Y data is the footpath of the supports insulative plate in transformer insulated geometry
To thickness data, numerical value Y is the radical length data of the baffle plate in transformer insulated geometry.
10. carried out using a kind of transformer moisture measurement device based on PDC/FDS dielectric response methods described in claim 1
The method of test, specific implementation step is as follows：
（1）The transformer insulation oil equivalent of required detection is placed in two oil sample cups, it is ensured that test electrode is completely immersed in oil
After in sample cup, oil sample cup lid is covered, tightening anchorage clip ensures that rigid contact is non-leakage between oil sample cup and oil sample cup lid；
（2）Measurement terminal is clipped on oil sample cup upper part of the cover conducting rod, it is ensured that contact good between measurement terminal and conducting rod, can
Validity Test leakage current；
（3）Turn on the power and be powered for measuring system, check whether display screen has display, it is ensured that system power supply state is normally entered
OK；
（4）Inspection system display interface data, it is ensured that working state of system is normal；
（5）Transformer insulated geometric data X-Y and ambient temperature data are sequentially input, it is ensured that system can complete X-Y data
Modeling；
（6）Click on and start testing button progress frequency sound test, test after terminating by display screen and printer record test result.
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| CN108279284A (en) * | 2018-01-04 | 2018-07-13 | 国网辽宁省电力有限公司电力科学研究院 | A kind of transformer moisture tester |
| CN108593714A (en) * | 2018-04-12 | 2018-09-28 | 西安交通大学 | Line measuring system for moisture content in a kind of transformer based on transformer built-in paper oil insulation sample effect of electromagnetic field |
| 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 |
| CN112067900A (en) * | 2020-08-31 | 2020-12-11 | 广东电网有限责任公司广州供电局 | PDC time-frequency domain conversion method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108279284A (en) * | 2018-01-04 | 2018-07-13 | 国网辽宁省电力有限公司电力科学研究院 | A kind of transformer moisture tester |
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| CN112067900A (en) * | 2020-08-31 | 2020-12-11 | 广东电网有限责任公司广州供电局 | PDC time-frequency domain conversion method and device |
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| Publication number | Publication date |
|---|---|
| CN107290399B (en) | 2023-09-05 |
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