CN206619462U - A kind of transformer model having an X-rayed - Google Patents
A kind of transformer model having an X-rayed Download PDFInfo
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- CN206619462U CN206619462U CN201720390078.8U CN201720390078U CN206619462U CN 206619462 U CN206619462 U CN 206619462U CN 201720390078 U CN201720390078 U CN 201720390078U CN 206619462 U CN206619462 U CN 206619462U
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Abstract
A kind of transformer model having an X-rayed of disclosure, including shell and transformer cover, the top of the shell is bolted with the transformer cover, one end of the outer surface of the transformer cover is provided with bushing group, the other end of the transformer cover outer surface is provided with low-tension bushing group, the low-tension bushing group is parallel to each other with the bushing group, conservator is provided with the outside of the transformer cover, the bottom of the conservator is provided with connecting tube, and the outlet end of the connecting tube extends to the inside of the shell through the transformer cover.Four side walls of transformer model shell that the application is provided are provided with observation window, transformer model inside is observed by comprehensive, and the data detected with detection instrument are contrasted, realization can be verified to testing result, and the effect of the comprehensive observing and nursing inner case of energy.
Description
Technical field
The application is related to transformer discharge detection technique field, more particularly to a kind of transformer model having an X-rayed.
Background technology
Transformer is a kind of static electrical equipment, and its effect is to turn the AC energy of the voltage and current of a certain grade
Be changed to the AC energy of the voltage and current of another grade of same frequency, transformer be most important equipment in power transmission and transformation it
One, be the important component of power system, its internal insulating properties direct relation power network whether fortune that can be safe and stable
OK, in order to ensure the stabilization of transformation security performance, transformer model is used to carry out analog detection.
Transformer is mainly made up of iron core, winding, transformer oil, sleeve pipe and tank envelope.In the process of running, it is internal
Insulation can be because a variety of causes, such as overheat, excessively stream, vibration, partial discharge a variety of causes therefore insulation defect, and wherein partial discharge is to transformation
The influence of the insulation of device is the most serious, and the detection and judgement to partial discharge are also the most complicated.Shelf depreciation refers to work as applied voltage
The field strength produced in the electrical apparatus, it is sufficient to make insulated part region discharge, but do not form in region of discharge fixation and put
This electric discharge phenomena of electric channel, therefore be all a continuous difficulty in research all the time to the Partial discharges diagnosis of inside transformer
Topic.Position judgment mainly to the diagnosis of the presence or absence of inside transformer partial discharge, the judgement of partial discharge type and to partial discharge is all present very
Big uncertainty.Different methods, the result error judged is very big, and the probability that there is wrong diagnosis is also larger, once by mistake
Diagnosis, will have Partial discharges diagnosis is that, without partial discharge, may result in equipment operation risk and increase, and if will have office without Partial discharges diagnosis
Put, the waste of substantial amounts of human and material resources can be caused again.
Referring to Fig. 1, sealing structure is used existing transformer model more, including existing transformer model 20, existing change
The fuel tank 21 of depressor model, existing transformer controller 22, existing transformer model detector 23 and single-phase winding 24, it is existing to become
The fuel tank 21 of depressor model is arranged in existing transformer model 20, and the front surface of existing transformer model 20 is provided with existing change
Depressor controller 22, the inside of the existing transformer model 20 is provided with single-phase winding 24, the existing transformer model 20
Side wall be evenly distributed with existing transformer model detector 23, existing transformer model 20 is sealed, from existing transformer
The outer surface of model 20 can not see that the defect of inside is in kind, only by localization by ultrasonic, as having to a result for user
, but this positioning result can not accurately be verified, only measure, calculate and see, just obtain at last correctly
Checking, existing transformer model is not all right realize it is comprehensive inner case is observed, only by localization by ultrasonic, as user
Say and have to a result, it is impossible to checking detect whether accurately.
Utility model content
The application provides a kind of transformer model having an X-rayed, with solve existing transformer model it is not all right realize it is comprehensive
Inner case is observed, only by localization by ultrasonic, as having to a result for user, it is impossible to checking detection
Whether it is accurate the problem of.
The embodiment of the present application provides a kind of transformer model having an X-rayed, including shell and transformer cover, the shell
Top is bolted with the transformer cover, and one end of the transformer cover outer surface is provided with bushing group, described
The other end of transformer cover outer surface is provided with low-tension bushing group, and the low-tension bushing group is mutually put down with the bushing group
OK, conservator is provided with the outside of the transformer cover, the bottom of the conservator is provided with connecting tube, the outlet end of the connecting tube
The inside of the shell is extended to through the transformer cover, the bottom interior wall of the shell is bolted with winding support frame, described
The inside center of winding support frame is provided with the second iron core column, and the side of the winding support frame is provided with the first iron core column, institute
The opposite side for stating winding support frame is provided with the 3rd iron core column, and the outer wall of first iron core column, which is intertwined and connected, A phase windings, institute
The outer wall for stating the second iron core column is intertwined and connected and has B phase windings, and the outer wall of the 3rd iron core column is intertwined and connected and has C phase windings, institute
The Ce Bi centers for stating shell are relatively set with observation window, and the link position of the observation window and the side wall of outer shell is socketed with sealing
Space between circle, shell and the winding support frame is provided with transformer oil, and the side wall of the shell is provided with detection instrument,
The detection instrument is located at the periphery of the observation window, and the sidewall bottom of the shell is provided with measurement data acquisition instrument, described
Measurement data acquisition instrument is electrically connected with the detection instrument.
With reference to the embodiment of the present application, in the embodiment of the present application in the first possible implementation, the bushing group
Including the first bushing, the second bushing and the 3rd bushing, first bushing, second bushing
With the 3rd bushing successively along arranged in a straight line.
The first possible implementation with reference to the embodiment of the present application, in second of possible realization side of the embodiment of the present application
In formula, the low-tension bushing group includes the first low-tension bushing, the second low-tension bushing, the 3rd low-tension bushing and the 4th low-tension bushing,
First low-tension bushing, second low-tension bushing, the 3rd low-tension bushing and the 4th low-tension bushing are successively along straight
Line is arranged.
The first possible implementation with reference to the embodiment of the present application, the third possible realization side in the embodiment of the present application
In formula, the area of the observation window is at least 1/3rd of side wall of outer shell area.
The first possible implementation with reference to the embodiment of the present application, in the 4th kind of possible realization side of the embodiment of the present application
In formula, the detection instrument is ultrasonic probe.
With reference to the 4th kind of possible implementation of the embodiment of the present application, in the 5th kind of possible realization side of the embodiment of the present application
In formula, the bottom of the ultrasonic probe is provided with magnetosphere, and the magnetosphere is amplexiformed in the outer wall of the shell.
From above technical scheme, a kind of transformer model having an X-rayed that the embodiment of the present application is provided, including shell
And transformer cover, the top of the shell is bolted with the transformer cover, and the one of the outer surface of the transformer cover
End is provided with bushing group, and the other end of the transformer cover outer surface is provided with low-tension bushing group, the low-tension bushing group
It is parallel to each other with the bushing group, conservator is provided with the outside of the transformer cover, the bottom of the conservator is provided with company
Adapter, the outlet end of the connecting tube extends to the inside of the shell through the transformer cover.The application passes through shell
Four side walls are provided with observation window, pass through the comprehensive number observed transformer model inside and detected with detection instrument
According to being contrasted, realization can be verified to testing result, and be capable of the effect of comprehensive observing and nursing inner case.
Brief description of the drawings
To be illustrated more clearly that the technical scheme of the application, it will make simple to the required accompanying drawing used in embodiment below
Introduce on ground, it should be apparent that, for those of ordinary skills, without having to pay creative labor, also
Other accompanying drawings can be obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation of existing transformer model；
The transformer model main view figure structure schematic representation that Fig. 2 provides for the embodiment of the present application；
Fig. 3 does not install the structural representation under observation window state for the transformer model that the embodiment of the present application is provided；
The transformer model side view figure structure schematic representation that Fig. 4 provides for the embodiment of the present application；
Fig. 5 overlooks figure structure schematic representation for the transformer model that the embodiment of the present application is provided；
The transformer model front view cross-sectional view that Fig. 6 provides for the embodiment of the present application.
Brief description of the drawings：1- shells, 2-A phase windings, 3-B phase windings, 4-C phase windings, 5- transformer oil, 6- observation windows, 7-
Transformer cover, 8- conservators, 9- connecting tubes, 10- bushing groups, the bushings of 1001- first, the bushings of 1002- second-
The bushings of 1003- the 3rd, 11- low-tension bushing groups, the low-tension bushings of 1101- first, the low-tension bushings of 1102- second, 1103- the 3rd
Low-tension bushing, the low-tension bushings of 1104- the 4th, 12- sealing rings, 13- winding support frames, the iron core columns of 14- first, the iron cores of 15- second
Post, the iron core columns of 16- the 3rd, 17- detection instruments, 18- measurement data acquisition instrument, 19- magnetospheres, the existing transformer models of 20-,
The fuel tank of the existing transformer models of 21-, the existing transformer controllers of 22-, the existing transformer model detectors of 23-, 24- it is single-phase around
Group.
Embodiment
Refering to Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6, a kind of transformer model having an X-rayed provided for the embodiment of the present application,
Including shell 1 and transformer cover 7, the top of the shell 1 is bolted with the transformer cover 7, the transformer cover 7
One end of outer surface is provided with bushing group 10, and high-tension current wants sleeve pipe group 10 to be connected by electric conductor with height, high-tension current
Enter from bushing group 10 and be connected with winding, bushing group 10 includes the first bushing 1001, the second bushing
1002 and the 3rd bushing 1003, the first bushing 1001, the second bushing 1002 and the 3rd bushing 1003 are equal
It is connected by bolt with transformer cover 7, and arranges in alignment, the other end of the outer surface of transformer cover 7 is provided with low
Gland pipe group 11, low-tension current enters from low-tension bushing group 11 to be connected with the low-pressure end of winding, and the low-tension bushing group 11 includes
First low-tension bushing 1101, the second low-tension bushing 1102, the 3rd low-tension bushing 1103 and the 4th low-tension bushing 1104, the first low pressure
Sleeve pipe 1101, the second low-tension bushing 1102, the 3rd low-tension bushing 1103 and the 4th low-tension bushing 1104 pass through bolt and transformation
Device lid 7 is attached, and arranges in alignment, and the low-tension bushing group 11 is parallel to each other with the bushing group 10, will
Low-tension bushing group 11 carried out with the bushing group 10 it is arranged in parallel, prevent connect high-tension current electric conductor touch low pressure
The electric conductor of electric current, influences Detection results, and the space at rear top arranged in parallel can add other equipment, the equipment institute newly increased
The data of detection, can increase the contrast number of testing result, so as to increase the accuracy of Detection results.
High-tension current is connected by electric conductor with bushing group 10, and high-tension current is imported into shell by bushing group 10
The 1 corresponding winding in inside, low-tension current is connected by electric conductor with low-tension bushing group 11, and low-tension bushing group 11 is by low-tension current
It imported into inside the corresponding winding in the inside of shell 1, shell 1 and uses three winding, winding refers to be wound with an original on iron core
The transformer of winding and several auxiliary winding, the number of turn of each auxiliary winding is different, then its terminal voltage is also different, therefore Multiple coil transformation
Device can to several different voltages power supply for electrical equipment, in power system be most commonly used that three-winding transformer, be this
Transformer model uses three winding, and three-winding transformer has 3 windings, after 1 winding is connected to AC power, 2 in addition
Winding just induces different potentials, and this transformer is used to need the load of 2 kinds of different voltage class, power plant and electric substation
3 kinds of different grades of voltages are generally occurred within, so three-winding transformer is applied than wide in power system.Three winding is than single
Item winding is more conducive to the detection of detection instrument 17, and detection instrument 17 uses ultrasonic probe, and three winding has three iron core columns, respectively
For the first iron core column 14, the second iron core column 15 and the 3rd iron core column 16, iron core is metal material, and ultrasound is in metal material and becomes
Spread speed in depressor oil 5 is different.Speed in iron core is 5000m/s, and transformer oil 5 is 1400m/s..Three-phase windings
Inside it is internal complicated more than single-phase, it is possible to reduce influence of the transformer oil 5 to localization by ultrasonic accuracy.
The outside of the transformer cover 7 is provided with conservator 8, and the bottom of the conservator 8 is provided with connecting tube 9, the connection
The outlet end of pipe 9 extends to the inside of the shell 1 through the transformer cover 7, and conservator 8 is connected by connecting tube 9, conservator
Transformer oil 5 in 8 can not add too full, and when lacking in transformer oil 5 in shell 1, the transformer oil 5 in conservator 8 will be suitable
Connecting tube is flowed down, and is added in shell 1, is allowed to keep full oil condition, when the temperature of transformer oil 5 in shell 1 increases, transformer oil
When can not load in 5 expansions, shell 1, transformer oil 5 can be upper from connecting tube, is back in conservator 8；
The bottom interior wall of the shell 1 is bolted with winding support frame 13, and the inside center of the winding support frame 13 is set
Have the second iron core column 15, the side of the winding support frame 13 is provided with the first iron core column 14, the winding support frame 13 it is another
Side is provided with the 3rd iron core column 16, and iron core is as an important component of transformer, and it is both the magnetic flux time of transformer
Road, is the supporting core of transformer again, and iron core is frame shape closing structure, wherein the part of set winding is iron core column, the application is adopted
It is three winding, all using three iron core columns, three iron core columns are respectively the first iron core column 14, the second iron core column 15 and the
Three iron core columns 16, the winding that three iron core columns are wound is connected respectively at corresponding bushing and low-tension bushing；
The outer wall of first iron core column 14, which is intertwined and connected, A phase windings 2, and the outer wall winding of second iron core column 15 connects
B phase windings 3 are connected to, the outer wall of the 3rd iron core column 16 is intertwined and connected and there are C phase windings 4, and winding refers to be wound with one on iron core
Primary winding and several auxiliary winding, the number of turn of each auxiliary winding are different, then its terminal voltage is also different, and three are used current winding method more
Winding, so transformer model carries out the analog detection of partial discharge of transformer using three winding；
The Ce Bi centers of the shell 1 are relatively set with observation window 6, can be effectively right by the observation window 6 being oppositely arranged
Comprehensive observation is carried out in shell 1, by the observation window 6 being oppositely arranged, torch for illumination can be used in the observation window 7 of opposite side,
Then observed by the way that 6 pairs of the observation window of opposite side is internal, such effective raising visual brightness of design, can allow operation
The situation of the person the inside of shell 1 visible in detail, after the observation window 6 of the side of shell 1 has sunlight to be irradiated into, the sight of opposite side
Examining the field of view of window 6 can also brighten, so that optimize field of view, the effective observation quality for improving simulation of playing a game, the sight
The link position for examining window 6 and the side wall of shell 1 is socketed with sealing ring 12, and sealing ring 12 can use O-ring seal, sealing ring
12 play a part of insulation, while preventing transformer oil 5 from being flowed out out of shell 1, between the shell 1 and winding support frame 13
Space is provided with transformer oil 5, and transformer oil 5 plays a part of insulation, and the inside of shell 1 is full of transformer oil 5, Transformer Winding
It is completely submerged in transformer oil 5 with iron core, the side wall of the shell 1 is provided with detection instrument 17, the detection instrument 17
Positioned at the periphery of the observation window 6, the sidewall bottom of the shell 1 is provided with measurement data acquisition instrument 18, and detection instrument 17 is adopted
With ultrasonic probe, the principle of localization by ultrasonic is that sound wave is sent to different probes, because distance is different, has the time difference.According to
Time difference, it is possible to calculate the distance apart from different probes, according to different apart from joining, you can draw the position of partial discharge defect
Put, the data of ultrasonic probe collection are collected by measurement data acquisition instrument 18, are then delivered to by data wire upper
Machine enters Data Management Analysis much defect particular locations, but host computer analyzes the conclusion that the data of ultrasonic probe collection are drawn,
As having to a result for user, but result of this positioning can not be verified accurately, only measured, calculated
To and see.Just correctly verified at last, so from needing to carry out from the inside of 6 shell of observation window 1, then in conjunction with
The data of detection, can accurately just be drawn a conclusion, and the measurement data acquisition instrument 18 is electrically connected with the detection instrument 17.
Fig. 2 and Fig. 5 are referred to, the bushing group 10 includes the first bushing 1001, the second bushing 1002
With the 3rd bushing 1003, first bushing 1001, second bushing 1002 and the 3rd high gland
Pipe 1003 is successively along arranged in a straight line, and the low-tension bushing group 11 includes the first low-tension bushing 1101, the second low-tension bushing 1102, the
Three low-tension bushings 1103 and the 4th low-tension bushing 1104, first low-tension bushing 1101, second low-tension bushing 1102, institute
The 3rd low-tension bushing 1103 and the 4th low-tension bushing 1104 are stated successively along arranged in a straight line.
The application uses three winding, and Three-Phase Transformer winding has star-like connection, triangle junction and zigzag connection etc.
Three kinds of connecting methods.Capitalization A, B, C are commonly used in winding coupling and represents high pressure winding head end, its end is represented with X, Y, Z, is used
O represents neutral point, and new standard is represented with meeting Y, D, Z high voltage winding group to star-like, triangle and zigzag connection respectively, right
Middle pressure and low pressure winding represent have and represented respectively with YN, ZN and yn, zn during neutral point extraction with y, d, z respectively, auto-transformer
Rated voltage is low in two windings of oily common portion one represents that transformer is by high pressure, middle pressure and low pressure winding connection with meeting a
It is exactly winding coupling group that the sequential combination of knot, which is got up, and such as high pressure is that Y, low pressure are that yn is coupled, then winding coupling group is Yyn,
The application uses Dyn joint groups, and the zero sequence impedance of Dyn joint groups is more much smaller than Yyn connection transformers, is conducive to low pressure list
The excision of phase ground short circuit failure.
Referring to Fig. 6, the head end of the first bushing 1001, the second bushing 1002 and the 3rd bushing 1003 point
Not Wei Y, D, Z, three bushings are connected with winding A, B and C respectively, the first low-tension bushing 1101, the second low-tension bushing 1102,
The end of 3rd low-tension bushing 1103 and the 4th low-tension bushing 1104 is a, b, c and d, and what is drawn in Fig. 6 is a kind of more to commonly use
Dyn connection set, low pressure winding is in the inside of high pressure winding, and high pressure winding has tri- leading-out terminals of ABC, that is, A phase windings,
The high pressure winding of B phase windings and C phase windings is connected with three high gland head end, the low pressure of A phase windings, B phase windings and C phase windings
Winding is connected with low-tension bushing end a, b and c, and wherein o ends are neutral point exits, and low pressure winding and high pressure winding be not electric
Connection, low pressure winding is in the inside of high pressure winding, just as one big cylindrical sleeve a small column.
Referring to Fig. 4, the area of the observation window 6 is at least 1/3rd of the sidewall area of shell 1, observation window
The too small situation for observing the inside of shell 1 that can not be in detail of area, all area designs by observation window 6 are into minimum for shell 1
/ 3rd of sidewall area, are so conducive to observing the inside situation of shell 1 by observation window 6, and observation window 6, which is used, to be had
Machine glass is as transparent medium.
Referring to Fig. 2, the detection instrument 17 is ultrasonic probe, the bottom of the ultrasonic probe is provided with magnetosphere
19, the magnetosphere 19 is amplexiformed in the outer wall of shell 1, and the magnetosphere 19 of ultrasonic probe is magnetic, because shell 1 is steel matter,
So the meaning arrangement that can take up an official post in shell, is sticked.
Transformer model can be by artificially setting different partial discharge defects, such as air gap, floating potential, turn-to-turn short circuit, mistake
Transformer cover 7 is for example opened and can destroy the insulating paper of winding, two circle winding short circuits cut to come, mould by heat etc., turn-to-turn short circuit
Intend void defects, sophisticated defects simulation can penetrate a pin inside winding.Floating potential defects simulation can be small by one
Small sheet metal is suspended between insulating paper, and position can choose at random, and is then closed transformer cover 7, is passed through the He of bushing 10
The internal winding power of 11 pairs of low-tension bushing, then starts detection instrument 17, the data summarization that detection instrument 17 is gathered to measurement number
According in Acquisition Instrument 18, host computer is then delivered to by data wire and carries out data analysis, the conclusion that host computer is drawn is with passing through sight
Examine the result that window 6 observes and carry out contrast verification, accomplish to measure, to and see, just correctly verified at last.
From above technical scheme, a kind of transformer model having an X-rayed that the embodiment of the present application is provided, including shell
And transformer cover, the top of the shell is bolted with the transformer cover, and the one of the outer surface of the transformer cover
End is provided with bushing group, and the other end of the transformer cover outer surface is provided with low-tension bushing group, the low-tension bushing group
It is parallel to each other with the bushing group, conservator is provided with the outside of the transformer cover, the bottom of the conservator is provided with company
Adapter, the outlet end of the connecting tube extends to the inside of the shell through the transformer cover.The application passes through shell
Four side walls are provided with observation window, pass through the comprehensive number observed transformer model inside and detected with detection instrument
According to being contrasted, realization can be verified to testing result, and be capable of the effect of comprehensive observing and nursing inner case.
Above-described the application embodiment does not constitute the restriction to the application protection domain.
Claims (6)
1. a kind of transformer model having an X-rayed, including shell (1) and transformer cover (7), the top of the shell (1) with it is described
Transformer cover (7) is bolted, it is characterised in that one end of transformer cover (7) outer surface is provided with bushing
Group (10), the other end of transformer cover (7) outer surface is provided with low-tension bushing group (11), the low-tension bushing group (11) with
The bushing group (10) is parallel to each other；
Conservator (8) is provided with the outside of the transformer cover (7), the bottom of the conservator (8) is provided with connecting tube (9), described
The outlet end of connecting tube (9) extends to the inside of the shell (1) through the transformer cover (7)；
The bottom interior wall of the shell (1) is bolted with winding support frame (13), and the inside center of the winding support frame (13) is set
The second iron core column (15) is equipped with, the side of the winding support frame (13) is provided with the first iron core column (14), the winding support
The opposite side of frame (13) is provided with the 3rd iron core column (16)；
The outer wall of first iron core column (14), which is intertwined and connected, A phase windings (2), the outer wall winding of second iron core column (15)
B phase windings (3) are connected with, the outer wall of the 3rd iron core column (16) is intertwined and connected and there are C phase windings (4)；
The Ce Bi centers of the shell (1) are relatively set with observation window (6), the observation window (6) and the shell (1) side wall
Link position is socketed with sealing ring (12), and the space between the shell (1) and winding support frame (13) is provided with transformer oil
(5), the side wall of the shell (1) is provided with detection instrument (17), and the detection instrument (17) is located at the outer of the observation window (6)
Enclose, the sidewall bottom of the shell (1) is provided with measurement data acquisition instrument (18)；
The measurement data acquisition instrument (18) electrically connects with the detection instrument (17).
2. a kind of transformer model having an X-rayed according to claim 1, it is characterised in that the bushing group (10)
Including the first bushing (1001), the second bushing (1002) and the 3rd bushing (1003), the first high gland
Pipe (1001), second bushing (1002) and the 3rd bushing (1003) are successively along arranged in a straight line.
3. a kind of transformer model having an X-rayed according to claim 1, it is characterised in that the low-tension bushing group (11)
Including the first low-tension bushing (1101), the second low-tension bushing (1102), the 3rd low-tension bushing (1103) and the 4th low-tension bushing
(1104), first low-tension bushing (1101), second low-tension bushing (1102), the 3rd low-tension bushing (1103) and
4th low-tension bushing (1104) is successively along arranged in a straight line.
4. a kind of transformer model having an X-rayed according to claim 1, it is characterised in that the face of the observation window (6)
Product is at least 1/3rd of shell (1) sidewall area.
5. a kind of transformer model having an X-rayed according to claim 1, it is characterised in that the detection instrument (17) is
Ultrasonic probe.
6. a kind of transformer model having an X-rayed according to claim 5, it is characterised in that the bottom of the ultrasonic probe
Portion is provided with magnetosphere (19), and the magnetosphere (19) is amplexiformed in the outer wall of the shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720390078.8U CN206619462U (en) | 2017-04-14 | 2017-04-14 | A kind of transformer model having an X-rayed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720390078.8U CN206619462U (en) | 2017-04-14 | 2017-04-14 | A kind of transformer model having an X-rayed |
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| Publication Number | Publication Date |
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| CN206619462U true CN206619462U (en) | 2017-11-07 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108335895A (en) * | 2018-04-28 | 2018-07-27 | 广东电网有限责任公司 | visual transformer refitting method |
| CN109087568A (en) * | 2018-09-17 | 2018-12-25 | 国网青海省电力公司检修公司 | Transformer analog training apparatus |
| CN112669662A (en) * | 2020-12-14 | 2021-04-16 | 广东电网有限责任公司 | Main transformer overhaul training platform |
-
2017
- 2017-04-14 CN CN201720390078.8U patent/CN206619462U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108335895A (en) * | 2018-04-28 | 2018-07-27 | 广东电网有限责任公司 | visual transformer refitting method |
| CN109087568A (en) * | 2018-09-17 | 2018-12-25 | 国网青海省电力公司检修公司 | Transformer analog training apparatus |
| CN112669662A (en) * | 2020-12-14 | 2021-04-16 | 广东电网有限责任公司 | Main transformer overhaul training platform |
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