CN207586352U - A kind of test device of for transformer gap leakage electromagnetic wave partial discharge detection - Google Patents
A kind of test device of for transformer gap leakage electromagnetic wave partial discharge detection Download PDFInfo
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- CN207586352U CN207586352U CN201721515748.0U CN201721515748U CN207586352U CN 207586352 U CN207586352 U CN 207586352U CN 201721515748 U CN201721515748 U CN 201721515748U CN 207586352 U CN207586352 U CN 207586352U
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Abstract
The utility model discloses a kind of test devices of for transformer gap leakage electromagnetic wave partial discharge detection, and sealing is bolted by insulating cell between the head cover and babinet of transformer shell and is formed around the transformer shell nonferromagnetic material of one week connection gap；Partial discharge detection device includes PD clocks, transmitting antenna, antenna sensor and oscillograph, and PD clocks and transmitting antenna are arranged in transformer shell body, and transmitting antenna is connect by the one 50 ohm coaxial signal wire with the signal output end of PD clocks；Antenna sensor is horizontally placed in the connection gap of transformer shell or couples inside gap, and the sides aligned parallel with coupling gap；Oscillograph is arranged on outside transformer shell and is connect by the 2nd 50 ohm coaxial signal wire with antenna sensor.The utility model can not only effectively detect power transformer gap leakage PD electromagnetic wave signals, and provide powerful support to carry out research to the electromagnetic wave regularity of distribution in transformer gap.
Description
Technical field
The utility model is related to transformer partial discharge detection technique field, specifically a kind of for transformer gap leakage
The test device of electromagnetic wave partial discharge detection.
Background technology
Power transformer is expensive, is the power transmission and distribution core of electric system, and state of insulation is to determine power transformer
Device can normal operation core.Shelf depreciation (Partial discharge, PD) causes electric power transformer insulated defect
Main cause, while be also the major embodiment of insulation defect, extra-high frequency electromagnetic waves partial discharge detection method is high, clever as a kind of reliability
The detection means of sensitivity height and strong antijamming capability widely should obtain in Partial Discharge in Power Transformer defect inspection field
With.
At present, the antenna sensor in power transformer PD superfrequencies Electromagnetic Wave Detection method mainly passes through hand hole, fuel outlet valve
It is deep into inside transformer or external by medium window.The electromagnetism that built-in antenna can be effectively shielded in ambient enviroment is done
It disturbs, but there are problems that two：1. built-in antenna can change inside transformer structure, so as to destroy inside transformer electromagnetic field
Be uniformly distributed；2. for the transformer in being currently running, Utilities Electric Co. does not allow to be transformed it.And by increasing medium
When the external way of window progress antenna can only be used in transformer production or overhaul, for the voltage device in being currently running
But this method can not be used to carry out PD detections.
Therefore, in order to carry out better experimental study to the electromagnetic wave regularity of distribution in gap, it is badly in need of a kind of test device
Transformer leakage electromagnetic wave partial discharge is detected.
Utility model content
In view of the deficiencies of the prior art, the utility model proposes a kind of inspections of for transformer gap leakage electromagnetic wave partial discharge
The test device of survey effectively detects power transformer gap leakage PD electromagnetic wave signals, for in transformer gap
The electromagnetic wave regularity of distribution of (inside) carries out research and provides powerful support.
The technical scheme in the invention for solving the technical problem is：
On the one hand, the survey for a kind of for transformer gap leakage electromagnetic wave partial discharge detection that the utility model embodiment provides
Trial assembly is put, it include transformer shell and partial discharge detection device, the transformer shell include head cover and babinet, the head cover and
Sealing is bolted by insulating cell between babinet and is formed around the transformer shell nonferromagnetic material of one week connection seam
Gap；The partial discharge detection device includes PD clocks, transmitting antenna, antenna sensor and oscillograph, the PD clocks and hair
It penetrates antenna to be arranged in transformer shell body, the transmitting antenna passes through the one 50 ohm coaxial signal wire and the signal of PD clocks
Output terminal connects；The antenna sensor is horizontally placed in the connection gap of transformer shell or couples inside gap, and with coupling
The sides aligned parallel in gap；The oscillograph is arranged on outside transformer shell and by the 2nd 50 ohm coaxial signal wire and antenna
Sensor connects.
As a kind of possible realization method of the present embodiment, the transmitting antenna and antenna sensor use cylindrical type list
Pole sub-antenna.
As a kind of possible realization method of the present embodiment, the long 5cm of the cylindrical type monopole antenna, a diameter of 1mm, with
The coaxial wire terminals of square flange high-frequency feed line SMA are pedestal, and the length of side of the square flange is 1cm.
As a kind of possible realization method of the present embodiment, when the transmitting antenna is towards different directions, transmitting antenna
High-frequency electromagnetic intensity of wave corresponding with PD clock output voltages is exported in a respective direction.
As a kind of possible realization method of the present embodiment, the antenna sensor is in transformer couples gap or couples
Depth inside gap can be adjusted.
As a kind of possible realization method of the present embodiment, the oscillograph is more than the oscillograph of 5GHz using sample rate.
On the other hand, another for transformer gap leakage electromagnetic wave partial discharge detection that the utility model embodiment provides
Test device, it include transformer shell and partial discharge detection device, the transformer shell include head cover and babinet, the top
Sealing is bolted by insulating cell between lid and babinet and is formed around the transformer shell nonferromagnetic material of one week connection
Seam gap；The partial discharge detection device includes PD clocks, transmitting antenna, Partial discharge detector and oscillograph, the PD arteries and veins
It rushes source and transmitting antenna is arranged in transformer shell body, the transmitting antenna passes through the one 50 ohm coaxial signal wire and PD pulses
The signal output end connection in source；The Partial discharge detector is arranged in the connection gap of transformer shell or couples in gap
Portion；The oscillograph is arranged on outside transformer shell and is connected by the 2nd 50 ohm coaxial signal wire and Partial discharge detector
It connects.
As a kind of possible realization method of the present embodiment, the Partial discharge detector is for coupling 300MHz extremely
The superfrequency shelf depreciation live detection instrument of the ultrahigh frequency electromagnetic wave signal of 3000MHz.
As a kind of possible realization method of the present embodiment, the transmitting antenna uses cylindrical type monopole antenna；It is described
When transmitting antenna is towards different directions, transmitting antenna exports height corresponding with PD clock output voltages in a respective direction
Frequency electromagnetic waves intensity.
As a kind of possible realization method of the present embodiment, the Partial discharge detector in transformer couples gap or
Depth inside connection gap can be adjusted；The oscillograph is more than the oscillograph of 5GHz using sample rate.
The technical solution of the utility model embodiment can have the advantage that as follows：
On the one hand, the utility model embodiment technical solution includes transformer shell and partial discharge detection device, the transformation
Sealing is bolted by insulating cell between the head cover and babinet of device housing and is formed around the non-of transformer shell one week
Ferromagnetic material couples gap；The partial discharge detection device includes PD clocks, transmitting antenna, antenna sensor and oscillograph, institute
State PD clocks and transmitting antenna be arranged in transformer shell body, the transmitting antenna by the one 50 ohm coaxial signal wire with
The signal output end connection of PD clocks；The antenna sensor is horizontally placed in the gap of transformer shell or inside gap, and
Its depth can be simultaneously adjusted with the sides aligned parallel in gap；The oscillograph is arranged on outside transformer shell and by the 2nd 50 Europe
Nurse coaxial signal line is connect with antenna sensor.The utility model embodiment technical solution not only overcomes existing UHF antenna
Dimensional problem between sensor and gap depth can detect by experiment in gap the electromagnetic wave signal in (or inside gap)
The electromagnetic wave regularity of distribution in (or inside gap) in gap is studied, and solves and can not realize transformer gap leakage
PD electromagnetic wave signals distribution characteristics has by testing the problem of detection is studied and eliminates existing power transformer PD superfrequencies
Detection antenna sensor is inserted into during transformer gap when adjusting insertion depth and is influenced and changed by surrounding metal conductor
The advantages of becoming sensor performance, for PD defects are supervised inside power transformer to realize by transformer gap leakage Electromagnetic Wave Detection
The further research surveyed is laid a good foundation.
On the other hand, the utility model embodiment technical solution includes transformer shell and partial discharge detection device, the change
Sealing is bolted by insulating cell between the head cover and babinet of depressor housing and is formed around transformer shell one week
Nonferromagnetic material couples gap；The partial discharge detection device includes PD clocks, transmitting antenna, Partial discharge detector and oscillography
Device, the PD clocks and transmitting antenna are arranged in transformer shell body, and the transmitting antenna is believed by the one 50 ohm coaxial
Number line is connect with the signal output end of PD clocks；The Partial discharge detector is arranged in the gap of transformer shell or stitches
Inside gap；The oscillograph is arranged on outside transformer shell and by the 2nd 50 ohm coaxial signal wire and Partial Discharge Detection
Instrument connects.The utility model embodiment technical solution can detect by experiment in gap the electromagnetic wave signal in (or inside gap)
The electromagnetic wave regularity of distribution in (or inside gap) in gap is studied, transformer gap leakage PD electricity can not be realized by solving
Magnetostatic wave signal distribution characteristics by test detection studied the problem of, for by transformer gap leakage Electromagnetic Wave Detection come reality
The further research of PD defect inspections is laid a good foundation inside existing power transformer.
Description of the drawings
Fig. 1 is the survey according to a kind of for transformer gap leakage electromagnetic wave partial discharge detection shown in an exemplary embodiment
The scheme of installation that trial assembly is put；
Fig. 2 is the setting schematic diagram according to a kind of antenna sensor shown in an exemplary embodiment；
Fig. 3 is according to another for transformer gap leakage electromagnetic wave partial discharge detection shown in an exemplary embodiment
The scheme of installation of test device；
Fig. 4 is the setting schematic diagram according to a kind of Partial discharge detector shown in an exemplary embodiment；
In figure, 1 head cover, 2 babinets, 3 connection gaps, 4 PD clocks, 5 transmitting antennas, 6 antenna sensors, 7 oscillographs, 8
One 50 ohm coaxial signal wire, 9 the 2nd 50 ohm coaxial signal wires, 10 Partial discharge detectors.
Specific embodiment
In order to clarify the technical characteristics of the invention, below by specific embodiment, and its attached drawing is combined, to this reality
It is described in detail with novel.Following disclosure provides many different embodiments or example is used for realizing the utility model
Different structure.In order to simplify the disclosure of the utility model, hereinafter the component of specific examples and setting are described.In addition,
The utility model can in different examples repeat reference numerals and/or letter.This repetition is to simplify and clear mesh
, the relationship between discussed various embodiments and/or setting itself is not indicated.It should be noted that illustrated in the accompanying drawings
Component is not drawn necessarily to scale.The description to known assemblies and treatment technology and process is omitted to avoid not in the utility model
Necessarily limit the utility model.
Embodiment 1
As depicted in figs. 1 and 2, a kind of for transformer gap leakage electromagnetic wave partial discharge that the utility model embodiment provides
The test device of detection, it includes transformer shell and partial discharge detection device, and the transformer shell includes head cover 1 and babinet 2,
Sealing is bolted by insulating cell between the head cover 1 and babinet 2 and is formed around the transformer shell non-ferric of one week
Magnetic material couples gap 3；The partial discharge detection device includes PD clocks 4, transmitting antenna 5, antenna sensor 6 and oscillograph 7,
The PD clocks 4 and transmitting antenna 5 are arranged in transformer shell body, and the transmitting antenna 5 is believed by the one 50 ohm coaxial
Number line 8 is connect with the signal output end of PD clocks 4；The antenna sensor 6 is horizontally placed in the connection gap of transformer shell
Or inside connection gap, and the sides aligned parallel with coupling gap 3；The oscillograph 7 is arranged on outside transformer shell and passes through
2nd 50 ohm coaxial signal wire 9 is connect with antenna sensor 6.
In a kind of possible realization method, the transmitting antenna and antenna sensor use cylindrical type monopole day
Line.The long 5cm of the cylindrical type monopole antenna, a diameter of 1mm, using square flange high-frequency feed line SMA coaxial wire terminals the bottom of as
Seat, the length of side of the square flange is 1cm.
In a kind of possible realization method, when the transmitting antenna is towards different directions, transmitting antenna is corresponding
High-frequency electromagnetic intensity of wave corresponding with PD clock output voltages is exported on direction.
In a kind of possible realization method, the antenna sensor is in transformer couples gap or inside connection gap
Depth can be adjusted.
In a kind of possible realization method, the oscillograph is more than the oscillograph of 5GHz using sample rate.
During partial discharge detection being carried out using the test device of the present embodiment to transformer gap leakage electromagnetic wave, first,
Adjust the PD pulse signals of the specified crest voltage of PD clocks output, and FRPA-Fixed Radiation Pattern Antenna is towards some determining direction；Root
According to the testing scheme of formulation depth of the antenna sensor in transformer couples gap is adjusted respectively, and by oscillograph multi collect
The detection signal of antenna sensor data；Produced by crest voltage being specified according to the detection signal of acquisition studying inside transformer
Electromagnetic Wave Propagation direction in the case of, transformer connection gap in electromagnetic wave the regularity of distribution.Then, in PD signal sources defeated
Go out specified crest voltage it is constant when, transmitting antenna is adjusted towards different directions according to the testing scheme of formulation respectively；Adjust day
Depth of the line sensor in transformer couples gap, and by the detection signal of oscillograph multi collect antenna sensor data；
When being changed according to the detection signal of acquisition to study inside transformer electromagnetic wave signal direction, electromagnetic wave in transformer connection gap
The regularity of distribution of signal.Finally, when ensureing that transmitting antenna is constant, transmitting antenna is changed by the output voltage for adjusting PD clocks
The high-frequency electromagnetic intensity of wave of output is adjusted according to the testing scheme of formulation in the case where PD clocks export different voltages respectively
Depth of the antenna sensor in transformer couples gap, and believed by the detection of oscillograph multi collect antenna sensor data
Number, the distribution of electromagnetic wave signal in gap when studying inside transformer PD Strength Changes, is coupled according to the detection signal of acquisition
Rule.
The present embodiment not only overcomes the dimensional problem between existing UHF antenna sensor and gap depth, Neng Goutong
The electromagnetic wave regularity of distribution of the electromagnetic wave signal to (or inside gap) in gap in (or inside gap) is crossed in experiment detection gap
It is studied, and solving can not realize transformer gap leakage PD electromagnetic wave signals distribution characteristics by testing detection progress
The problem of research, there is the existing power transformer PD superfrequencies detection antenna sensor of elimination to be inserted into during transformer gap
The advantages of being influenced when adjusting insertion depth and by surrounding metal conductor and changing sensor performance, to be let out by transformer gap
Dew Electromagnetic Wave Detection to realize, lay a good foundation inside power transformer by further studying for PD defect inspections.
Embodiment 2
As shown in Figure 3 and Figure 4, another for transformer gap leakage electromagnetic wave office that the utility model embodiment provides
The test device of detection is put, it includes transformer shell and partial discharge detection device, and the transformer shell includes head cover 1 and babinet
2, sealing is bolted by insulating cell between the head cover 1 and babinet 2 and is formed around the non-of transformer shell one week
Ferromagnetic material couples gap 3；The partial discharge detection device includes PD clocks 4, transmitting antenna 5,10 and of Partial discharge detector
Oscillograph 7, the PD clocks 4 and transmitting antenna 5 are arranged in transformer shell body, and the transmitting antenna 5 passes through the one 50 Europe
Nurse coaxial signal line 8 is connect with the signal output end of PD clocks 4；The Partial discharge detector 10 is arranged on transformer shell
Connection gap in or connection gap inside；The oscillograph is arranged on outside transformer shell and by the 2nd 50 ohm coaxial
Signal wire is connect with Partial discharge detector.
In a kind of possible realization method, the Partial discharge detector is for coupling 300MHz to 3000MHz's
The superfrequency shelf depreciation live detection instrument of ultrahigh frequency electromagnetic wave signal.
In a kind of possible realization method, the transmitting antenna uses cylindrical type monopole antenna；The transmitting antenna
During towards different directions, transmitting antenna exports frequency electromagnetic waves corresponding with PD clock output voltages in a respective direction
Intensity.
In a kind of possible realization method, the Partial discharge detector transformer couple gap in or connection gap
Internal depth can be adjusted；The oscillograph is more than the oscillograph of 5GHz using sample rate.
During partial discharge detection being carried out using the test device of the present embodiment to transformer gap leakage electromagnetic wave, first,
Adjust the PD pulse signals of the specified crest voltage of PD clocks output, and FRPA-Fixed Radiation Pattern Antenna is towards some determining direction；Root
According to the testing scheme of formulation depth of the Partial discharge detector in transformer couples gap is adjusted respectively, and multiple by oscillograph
Acquire the detection signal of Partial discharge detector's data；Specify peak value electric to study inside transformer according to the detection signal of acquisition
In the case of Electromagnetic Wave Propagation direction caused by pressure, the regularity of distribution of electromagnetic wave in transformer connection gap.Then, believe in PD
Number source adjusts transmitting antenna towards different directions respectively when the specified crest voltage of output is constant according to the testing scheme of formulation
And depth of the Partial discharge detector in transformer couples gap is adjusted, and by oscillograph multi collect Partial discharge detector
The detection signal of data；When being changed according to the detection signal of acquisition to study inside transformer electromagnetic wave signal direction, transformer
Couple the regularity of distribution of electromagnetic wave signal in gap.Finally, when ensureing that transmitting antenna is constant, by adjusting the defeated of PD clocks
Go out the high-frequency electromagnetic intensity of wave that voltage changes transmitting antenna output, exported not in PD clocks respectively according to the testing scheme of formulation
Depth of the Partial discharge detector in transformer couples gap is adjusted in the case of with voltage, and by oscillograph multi collect office
The detection signal of portion's discharge detector data when studying inside transformer PD Strength Changes, joins according to the detection signal of acquisition
The regularity of distribution of electromagnetic wave signal in seam gap.
The present embodiment can detect the electromagnetic wave signal of (or inside gap) in gap to (or gap in gap by experiment
It is internal) the electromagnetic wave regularity of distribution studied, solving can not realize that the distribution of transformer gap leakage PD electromagnetic wave signals is special
Sign is by testing the problem of detection is studied, to be realized in power transformer by transformer gap leakage Electromagnetic Wave Detection
The further research of portion's PD defect inspections is laid a good foundation.
The utility model can not only effectively detect power transformer gap leakage PD electromagnetic wave signals, Er Qiewei
Research is carried out to the electromagnetic wave regularity of distribution of (inside) in transformer gap and provides powerful support.
The above is the preferred embodiment of the utility model, and those skilled in the art are come
Say, under the premise of the utility model principle is not departed from, several improvements and modifications can also be made, these improvements and modifications also by
It is considered as the scope of protection of the utility model.
Claims (10)
1. a kind of test device of for transformer gap leakage electromagnetic wave partial discharge detection, including transformer shell and partial discharge detection
Device, it is characterized in that, the transformer shell includes head cover and babinet, passes through spiral shell by insulating cell between the head cover and babinet
It tethers and connects sealing and formed around the transformer shell nonferromagnetic material of one week connection gap；The partial discharge detection device includes PD
Clock, transmitting antenna, antenna sensor and oscillograph, the PD clocks and transmitting antenna are arranged in transformer shell body,
The transmitting antenna is connect by the one 50 ohm coaxial signal wire with the signal output end of PD clocks；The antenna sensor
It is horizontally placed in the connection gap of transformer shell or couples inside gap, and the sides aligned parallel with coupling gap；The oscillograph
It is arranged on outside transformer shell and is connect by the 2nd 50 ohm coaxial signal wire with antenna sensor.
2. a kind of test device of for transformer gap leakage electromagnetic wave partial discharge detection as described in claim 1, feature
It is that the transmitting antenna and antenna sensor use cylindrical type monopole antenna.
3. a kind of test device of for transformer gap leakage electromagnetic wave partial discharge detection as claimed in claim 2, feature
It is the long 5cm of the cylindrical type monopole antenna, a diameter of 1mm, using square flange high-frequency feed line SMA coaxial wire terminals the bottom of as
Seat, the length of side of the square flange is 1cm.
4. a kind of test device of for transformer gap leakage electromagnetic wave partial discharge detection as described in claim 1, feature
It is that when the transmitting antenna is towards different directions, transmitting antenna exports and PD clock output voltages in a respective direction
Corresponding high-frequency electromagnetic intensity of wave.
5. a kind of test device of for transformer gap leakage electromagnetic wave partial discharge detection as described in claim 1, feature
It is that depth of the antenna sensor in transformer couples gap or inside connection gap can be adjusted.
6. a kind of test dress of for transformer gap leakage electromagnetic wave partial discharge detection as described in claim 1-5 any one
It puts, it is characterized in that, the oscillograph is more than the oscillograph of 5GHz using sample rate.
7. a kind of test device of for transformer gap leakage electromagnetic wave partial discharge detection, including transformer shell and partial discharge detection
Device, it is characterized in that, the transformer shell includes head cover and babinet, passes through spiral shell by insulating cell between the head cover and babinet
It tethers and connects sealing and formed around the transformer shell nonferromagnetic material of one week connection gap；The partial discharge detection device includes PD
Clock, transmitting antenna, Partial discharge detector and oscillograph, the PD clocks and transmitting antenna are arranged on transformer shell
Interior, the transmitting antenna is connect by the one 50 ohm coaxial signal wire with the signal output end of PD clocks；It puts the part
Electro-detection instrument is arranged in the connection gap of transformer shell or couples inside gap；The oscillograph is arranged on transformer shell
It is external and connect by the 2nd 50 ohm coaxial signal wire with Partial discharge detector.
8. a kind of test device of for transformer gap leakage electromagnetic wave partial discharge detection as claimed in claim 7, feature
It is that the Partial discharge detector is for coupling the superfrequency of the ultrahigh frequency electromagnetic wave signal of 300MHz to 3000MHz part
Discharge live detection instrument.
9. a kind of test device of for transformer gap leakage electromagnetic wave partial discharge detection as claimed in claim 7, feature
It is that the transmitting antenna uses cylindrical type monopole antenna；When the transmitting antenna is towards different directions, transmitting antenna is right
High-frequency electromagnetic intensity of wave corresponding with PD clock output voltages is exported on the direction answered.
10. a kind of test of for transformer gap leakage electromagnetic wave partial discharge detection as described in claim 7-9 any one
Device, it is characterized in that, depth of the Partial discharge detector in transformer couples gap or inside connection gap can carry out
It adjusts；The oscillograph is more than the oscillograph of 5GHz using sample rate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721515748.0U CN207586352U (en) | 2017-11-14 | 2017-11-14 | A kind of test device of for transformer gap leakage electromagnetic wave partial discharge detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721515748.0U CN207586352U (en) | 2017-11-14 | 2017-11-14 | A kind of test device of for transformer gap leakage electromagnetic wave partial discharge detection |
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| Publication Number | Publication Date |
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| CN207586352U true CN207586352U (en) | 2018-07-06 |
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| CN201721515748.0U Active CN207586352U (en) | 2017-11-14 | 2017-11-14 | A kind of test device of for transformer gap leakage electromagnetic wave partial discharge detection |
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| Country | Link |
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