CN107422200A - Transformer fault simulation system - Google Patents
Transformer fault simulation system Download PDFInfo
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- CN107422200A CN107422200A CN201710351744.1A CN201710351744A CN107422200A CN 107422200 A CN107422200 A CN 107422200A CN 201710351744 A CN201710351744 A CN 201710351744A CN 107422200 A CN107422200 A CN 107422200A
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- housing
- transformer
- simulation system
- fault simulation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention provides a kind of transformer fault simulation system.The system includes：Housing, supporter, electric discharge device and temperature-adjusting device；Wherein, housing is used to fill to set transformer oil to be measured；Supporter is placed in housing, and supporter is used to install insulating paper to be measured；Electric discharge device is used to electrically connect with electric supply installation and produces electric discharge to transformer oil to be measured；Temperature-adjusting device is used to the temperature of transformer oil be adjusted.Transformer fault simulation system provided by the invention both can be with the partial discharges fault of analogue transformer and disruptive discharge failure, again can be with the hot-spot failure of analogue transformer, or the partial discharges fault of transformer, disruptive discharge failure and local overheating fault simultaneously, so as to the actual operating mode of comprehensive simulated transformer, so that the understanding to the performance of transformer is more comprehensive and accurate, to judge that the transformer material before putting into operation provides reference frame with the presence or absence of Hidden fault.
Description
Technical field
The present invention relates to oil filled electric power equipment failover technique field, in particular to a kind of transformer fault simulation system
System.
Background technology
In power system, transformer is one of expensive and important equipment.With the continuous improvement of voltage class, transformation
Device break down probability more and more higher, once and failure occur, it will cause a regional large area, for a long time have a power failure, make
Into the heavy losses of economy and the very big inconvenience of life.And high-power transformer is the equipment of whole power system important core,
Its safe operation is most important.
When inside transformer has Hidden fault or failure is aggravated, insulating oil and insulating paper can be caused in insulating oil
Producing dissolved gas or dissolved gas quantity accordingly increases, and the decay of the insulating properties and mechanical performance of insulating paper.Failure
Composition, content, gas production rate and the insulating paper performance parameter of gas are the important of tracing trouble presence, property, degree and development
Foundation.By changing to Dissolved Gases in Insulating Oil, and the trace analysis of insulating paper performance parameter, it is to find inside transformer
Failure and diagnosed and handled most effective, most economical means in time.As the continuous development of insulating oil and transformer is opened
Hair, novel insulating oil, such as synthetic ester, the vegetable insulating oil mineral insulating oil that gradually substitution was commonly used in the past, these New insulateds
Oil and in general mineral insulation oil component have differences, also, with the continuous application of transformer new material, make in same fault
Under, oil dissolved gas and the mineral insulation oil dissolved gas of novel insulating oil and oilpaper mix insulation have differences, because
This needs the situation for studying the oil dissolved gas under various failures at the test condition, and can not simply apply mechanically mineral insulation
The fault diagnosis criterion of oil dissolved gas.
But the failure that failure analog device of transformer is simulated at present is all single-element, for example transformation can only be simulated
Device partial discharges fault or can only analogue transformer hot-spot failure, can not comprehensive simulated actual condition, so as to can not
Fully understand the performance of transformer.
The content of the invention
In consideration of it, the present invention proposes a kind of transformer fault simulation system, it is intended to solves current failure simulation device
The failure simulated all is the problem of can not fully understanding the performance of transformer caused by single-element.
On one side, the present invention proposes a kind of transformer fault simulation system.The system includes：Housing, supporter, put
Electric installation and temperature-adjusting device；Wherein, housing is used to fill to set transformer oil to be measured；Supporter is placed in housing, and supporter is used
In installation insulating paper to be measured；Electric discharge device is used to electrically connect with electric supply installation and produces electric discharge to transformer oil to be measured；Temperature
Adjusting means is used to the temperature of transformer oil to be measured be adjusted.
Further, in above-mentioned transformer fault simulation system, electric discharge device includes：Two conducting connecting bars and two are put
Electrode；Wherein, each conducting connecting bar is arranged in housing and is partially disposed in housing, each conducting connecting bar be placed in outside housing
One end is used to electrically connect with electric supply installation；Each discharge electrode is placed in housing, also, the first end of each discharge electrode and each conduction
The second end that connecting rod is placed in housing is connected correspondingly, and the second end of each discharge electrode is oppositely arranged.
Further, in above-mentioned transformer fault simulation system, each conducting connecting bar includes：First conducting rod,
Two conducting rods and conductive contact；Wherein, the first conducting rod is arranged in housing and is partially disposed in housing, and the first conducting rod is placed in shell
External first end is connected with conductive contact, and conductive contact is used to electrically connect with electric supply installation；Second conducting rod is placed in housing
It is interior, also, the first end of the second conducting rod is threadedly coupled with the second end of the first conducting rod；The first end of discharge electrode is led with second
Second end of electric pole is connected.
Further, in above-mentioned transformer fault simulation system, each conducting connecting bar also includes：Fastener；Wherein,
Second end of the second conducting rod radially offers first through hole, and the first end of discharge electrode is arranged in first through hole；First through hole
Side wall offer the second through hole, fastener is arranged in the second through hole and presses on the surface of discharge electrode.
Further, in above-mentioned transformer fault simulation system, temperature-adjusting device includes：Heater, cooling device
And temperature-detecting device；Wherein, heater and cooling device are used to make the temperature of transformer oil to be measured to be the first preset temperature；
Temperature-detecting device is placed in housing, for detecting the temperature of transformer oil to be measured.
Further, in above-mentioned transformer fault simulation system, heater includes：Two electrode stems, two installing pipes
With a resistance wire；Wherein, each electrode stem is arranged in housing and is partially disposed in housing, each electrode stem be placed in outside housing
One end is used to and power electric connection；Each installing pipe be placed in housing and respectively with the second end of each electrode stem correspondingly
It is connected, the side wall of each installing pipe offers mounting hole, and binding post, each binding post difference are provided with each mounting hole
Electrically connected correspondingly with each electrode stem；Resistance wire is placed in housing, also, the both ends of resistance wire respectively with each mounting hole
Binding post be connected, resistance wire be used for bear the second preset temperature.
Further, in above-mentioned transformer fault simulation system, the middle part of resistance wire around being set to helical form, also,
Each circle resistance wire contact connection at helical form.
Further, in above-mentioned transformer fault simulation system, temperature-detecting device includes：Base and thermometer；Wherein,
Base is connected with the inwall of housing, and the first end of thermometer is connected with base, and the second end of thermometer is placed at helical form
Resistance wire inside.
Further, in above-mentioned transformer fault simulation system, cooling device includes：Heat exchange coil, pump and fluid reservoir；Its
In, heat exchange coil is partially disposed in housing, and the liquid feeding end and outlet end of heat exchange coil are arranged in housing；Pump and fluid reservoir are put
In outside housing, the outlet of pump is connected with liquid feeding end, and the entrance and outlet end of pump are connected with fluid reservoir, and fluid reservoir is used to store up
Deposit coolant.
Further, in above-mentioned transformer fault simulation system, cooling device also includes：Valve block, water tank and refrigeration fan；
Wherein, valve block, water tank and refrigeration fan are placed in outside housing；The inlet of valve block is connected with the outlet of pump, and valve block goes out liquid
Mouth is connected with liquid feeding end；Water tank is connected with valve block, and refrigeration fan is arranged at the outer wall of water tank.
Further, in above-mentioned transformer fault simulation system, supporter includes：Two parallel arrangement of side plates and at least
Two fix bars；Each fix bar is respectively arranged above and below each side plate, also, the both ends of each fix bar respectively with each side
Plate is connected；The relative wall of each side plate accordingly offers multiple necks, and neck is used to install insulating paper to be measured.
Further, in above-mentioned transformer fault simulation system, housing includes：The cylinder of top plate, bottom plate and both ends open；
Wherein, cylinder is crimped between top plate and bottom plate, and top plate is connected with bottom plate by screw rod；Supporter is placed in cylinder, also,
Supporter is detachably connected with bottom plate.
Further, above-mentioned transformer fault simulation system, in addition to：Agitating device；Wherein, agitating device is placed in housing
Interior, agitating device is used to stir transformer oil to be measured so that the temperature of transformer oil to be measured is uniform.
Further, above-mentioned transformer fault simulation system, in addition to：Conservator and vavuum pump；Wherein, conservator and vavuum pump
It is placed in outside housing；The air bag of conservator is connected with the inner space of housing, and vavuum pump leads to airbags, vavuum pump be used for pair
Air bag and enclosure interior space are evacuated.
Further, in above-mentioned transformer fault simulation system, in addition to：Casing；Wherein, pump and fluid reservoir are placed in case
In vivo；Housing and conservator are connected with the outer wall of casing.
Further, in above-mentioned transformer fault simulation system, valve block, water tank and refrigeration fan are placed in casing.
The present invention includes electric discharge device and temperature-adjusting device, by adjusting the voltage of electric supply installation, makes electric discharge device pair
Transformer oil to be measured and insulating paper to be measured are discharged, can be with the partial discharges fault of analogue transformer and disruptive discharge failure；
The temperature of transformer oil to be measured is adjusted by temperature-adjusting device, can be made with the hot-spot failure of analogue transformer
Obtaining the simulation system both can be with the partial discharges fault of analogue transformer and disruptive discharge failure, again can be with the office of analogue transformer
Portion's overheating fault, or the partial discharges fault of transformer, disruptive discharge failure and local overheating fault simultaneously, so as to complete
The actual operating mode of face analogue transformer so that the understanding to the performance of transformer is more comprehensive and accurate, to judge to put into operation
Preceding transformer material provides reference frame with the presence or absence of Hidden fault.
Brief description of the drawings
By reading the detailed description of hereafter preferred embodiment, it is various other the advantages of and benefit it is common for this area
Technical staff will be clear understanding.Accompanying drawing is only used for showing the purpose of preferred embodiment, and is not considered as to the present invention
Limitation.And in whole accompanying drawing, identical part is denoted by the same reference numerals.In the accompanying drawings：
Fig. 1 is the structural representation of transformer fault simulation system provided in an embodiment of the present invention；
Fig. 2 is the structural representation of supporter in transformer fault simulation system provided in an embodiment of the present invention；
Fig. 3 is the decomposing schematic representation of housing in transformer fault simulation system provided in an embodiment of the present invention；
Fig. 4 is the structural representation of electric discharge device in transformer fault simulation system provided in an embodiment of the present invention；
Fig. 5 is the structural representation of heater in transformer fault simulation system provided in an embodiment of the present invention；
Fig. 6 is the structural representation of cooling device in transformer fault simulation system provided in an embodiment of the present invention；
Fig. 7 is the cooling schematic diagram of cooling device in transformer fault simulation system provided in an embodiment of the present invention；
Fig. 8 is the structural representation of agitating device in transformer fault simulation system provided in an embodiment of the present invention；
Fig. 9 is oil circuit schematic diagram in transformer fault simulation system provided in an embodiment of the present invention.
Embodiment
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although the disclosure is shown in accompanying drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
Limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
Completely it is communicated to those skilled in the art.It should be noted that in the case where not conflicting, embodiment in the present invention and
Feature in embodiment can be mutually combined.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Referring to Fig. 1 and Fig. 2, the preferred structure for the transformer fault simulation system that the present embodiment provides is shown in figure.Such as
Shown in figure, the system includes：Housing 1, supporter 2, electric discharge device 3 and temperature-adjusting device 4.
Wherein, filled in housing 1 provided with transformer oil to be measured.When it is implemented, in order to simulate actual working condition, it is to be measured
Transformer oil can be full of whole housing 1.The bottom of housing 1 can offer oil outlet, in order to the stream of transformer oil to be measured
Go out.During experiment, housing 1 is equivalent to transformer.Supporter 2 is placed in housing 1, and supporter 2 can install insulating paper 5 to be measured.Put
Electric installation 3 electrically connects with electric supply installation 6, and produces electric discharge to transformer oil to be measured.When it is implemented, electric supply installation 6 can be
Electric discharge device 3 provides analog voltage, and electric supply installation 6 can be provided with high-pressure modular 61, and electric discharge device 3 can be with high-pressure modular 61
Electrical connection.The temperature of transformer oil to be measured can be adjusted for temperature-adjusting device 4, so that the temperature of transformer oil to be measured is more
Temperature during the nearly real work of adjunction；Also transformer oil to be measured can be made to produce the phenomenon of hot-spot by temperature-adjusting device,
With the hot-spot failure of analogue transformer.It should be noted that the transformer event that multiple the present embodiment can be used to be provided
Barrier simulation system enters the fault simulation of line transformer simultaneously, balance test is realized, so that between each transformer fault simulation system
Experiment effect and the accuracy of experimental result can mutually aid in confirming.When it is implemented, electric supply installation 6 can be provided with it is more
Individual high-pressure modular 61, each high-pressure modular 61 can electrically connect correspondingly with each transformer fault simulation system.
In the present embodiment, the simulation system includes electric discharge device 3 and temperature-adjusting device 4, by adjusting electric supply installation 6
Voltage, electric discharge device 3 is set to discharge transformer oil to be measured and insulating paper to be measured 5, can be with the shelf depreciation of analogue transformer
Failure and disruptive discharge failure；The temperature of transformer oil to be measured is adjusted by temperature-adjusting device 4, transformation can be simulated
The hot-spot failure of device so that the simulation system both can with the partial discharges fault of analogue transformer and disruptive discharge failure,
Again can be with the hot-spot failure of analogue transformer, or the partial discharges fault of transformer, disruptive discharge failure drawn game simultaneously
Portion's overheating fault, so as to the actual operating mode of comprehensive simulated transformer so that the understanding to the performance of transformer is more comprehensive
With it is accurate, for judge put into operation before transformer material provide reference frame with the presence or absence of Hidden fault.
Referring to Fig. 3 and Fig. 4, the preferred structure for the electric discharge device 3 that the present embodiment provides is shown in figure.As illustrated, put
Electric installation 3 can include：Two conducting connecting bars 31 and two discharge electrodes 32.Wherein, each conducting connecting bar 31 is arranged in shell
Body 1 and be partially disposed in housing 1, and the first end (upper end shown in Fig. 4) that each conducting connecting bar 31 is placed in outside housing 1 with confession
Electric installation 6 electrically connects.When it is implemented, the first end of each conducting connecting bar 31 can be provided with high pressure connection 33, each conduction
The first end of connecting rod 31 can be electrically connected by high pressure connection 33 with electric supply installation 6.Each discharge electrode 32 is placed in housing 1
It is interior, also, the first end (left end shown in Fig. 4) of each discharge electrode 32 be placed in each conducting connecting bar 31 in housing 1 second
End (lower end shown in Fig. 4) is connected correspondingly, and the second end (right-hand member shown in Fig. 4) of each discharge electrode 32 is oppositely arranged.
By the service voltage of electric supply installation 6, the second end of each discharge electrode 32 that can make to be oppositely arranged produces electric discharge.In addition, pass through tune
The voltage of electric supply installation 6 is saved, the intensity of electric discharge, and then the partial discharges fault of analogue transformer and disruptive discharge event can be adjusted
Barrier.
In above-described embodiment, each conducting connecting bar 31 may each comprise：First conducting rod 311, the and of the second conducting rod 312
Conductive contact 314.Wherein, the first conducting rod 311 is arranged in housing 1 and is partially disposed in housing 1, and the first conducting rod 311 is placed in
First end (upper end shown in Fig. 4) outside housing 1 can be connected with conductive contact 314, and the first conducting rod 311 is placed in housing 1
Outer first end can be electrically connected by conductive contact 314 with the high-pressure modular 61 of electric supply installation 6.Second conducting rod 312 can be with
It is placed in housing 1, also, the first end (upper end shown in Fig. 4) of the second conducting rod 312 and the second end of the first conducting rod 311
(lower end shown in Fig. 4) can be threaded connection.Certainly, when it is implemented, the first end of the second conducting rod 312 is conductive with first
Second end of bar 311 can also be other types of attachment, be led as long as the first end of the second conducting rod 312 and first can be adjusted
The distance between second end of electric pole 311 can.The first end of discharge electrode 32 is connected with the second end of the second conducting rod 312
Connect.
In the present embodiment, the first end of the second conducting rod 312 is to be threadedly coupled with the second end of the first conducting rod 311, i.e.,
The distance between the second conducting rod 312 and the first conducting rod 311, Jin Erke are adjusted by rotating the can of the second conducting rod 312
So that the height of each discharge electrode 32 is adjusted, to realize the simulation of more multi-state, the performance of transformer has more fully been understood.
In above-described embodiment, each conducting connecting bar 31 can also include：Fastener 313.Wherein, the second conducting rod
312 the second end can radially offer first through hole, and the first end of discharge electrode 32 can be arranged in first through hole.First is logical
The side wall in hole can offer the second through hole, and the second through hole can connect with first through hole.Fastener 313 can be arranged in
Two through holes and the surface for pressing on discharge electrode 32, and then discharge electrode 32 is fixed.Certainly, when it is implemented, can in first through hole
To be provided with screw thread, and then the second end of discharge electrode 32 is set to be threadedly coupled with the second end of the second conducting rod 312.
In the present embodiment, discharge electrode 32 is fixed on by fastener 313 in the first through hole of second conducting rod 312, is passed through
Unscrewing fastener 313 can just make the spacing between two discharge electrodes 32 adjusted, so that two positions of discharge electrode 32
It is adjustable, to realize the simulation of more multi-state, more fully understand the performance of transformer.
With continued reference to Fig. 3, as illustrated, temperature-adjusting device 4 can include：Heater 41, cooling device 42 and temperature
Spend detection means 43.Wherein, heater 41 and cooling device 42 can make the temperature of transformer oil to be measured be the first default temperature
Degree, make transformer oil to be measured temperature be more nearly transformer real work temperature or simulation needed for temperature；In addition, pass through
The intensity of cooling of the heating intensity and cooling device 42 that adjust heater 41 can be with the overheating fault of analogue transformer.It is specific real
Shi Shi, the first preset temperature can be 60 DEG C~70 DEG C.Temperature-detecting device 43 is placed in housing 1, to detect transformer to be measured
The temperature of oil, so as to accurately make the temperature of transformer oil to be measured be the first preset temperature.When it is implemented, heater
41 and temperature-detecting device 43 can be it is multiple, each heater 41 can equably be arranged along the circumference of housing 1.
It should be noted that the first preset temperature can determine according to the actual needs, the present embodiment is not appointed to it
What is limited.
Referring to Fig. 5, the preferred structure for the heater 41 that the present embodiment provides is shown in figure.As illustrated, heating dress
Putting 41 can include：Two electrode stems, 411, two installing pipes 412 and a resistance wire 413.Wherein, each electrode stem 411 is worn
Located at housing 1 and be partially disposed in housing 1, the first end (lower end shown in Fig. 5) that each electrode stem 411 is placed in outside housing 1 with
Power electric connection.When it is implemented, the outer wall of the first end of each electrode stem 411 can be provided with screw thread, so that each electrode stem 411
First end can wear and be threadedly connected to housing 1.Each installing pipe 412 can be placed in housing 1 and respectively with each electrode
The second end (upper end shown in Fig. 5) of bar 411 is connected correspondingly.When it is implemented, each installing pipe 412 with it is corresponding each
Boss 415 of the diameter more than the diameter of each electric pole and each installing pipe 412 can be provided between electrode stem 411, boss 415 can be with
It is placed in housing 1 and is in contact with the inwall of the bottom of housing 1, and then makes the better tightness of housing 1.The side of each installing pipe 412
Wall can offer mounting hole 414, and binding post (not shown), each wiring can be provided with each mounting hole 414
Terminal electrically connects correspondingly with each electrode stem 411 respectively.When it is implemented, the side wall of each electrode stem 411 can be opened
Provided with multiple mounting holes 414, the size of each mounting hole 414 can be different, and then can install the binding post of different model,
And the model of binding post can select according to the heating power being actually needed, the present embodiment does not do any restriction to it.Electricity
Resistance silk 413 is placed in housing 1, also, the both ends of resistance wire 413 extend installing pipe 414 from the suitable for reading of each mounting hole 414 respectively
It is interior, and be connected with binding post.Resistance wire 413 can bear the second preset temperature, such as bear the temperature more than 600 DEG C.
When it is implemented, resistance wire can be platinum wire.By power supply service voltage, resistance wire 413 can be made to generate heat, and then to be measured
Transformer oil is heated.The heater 41 is simple in construction, it is easy to accomplish.
In above-described embodiment, the middle part of resistance wire 413 can be around being set to helical form, each circle resistance wire at helical form
413 can contact with each other, so as to vortex be produced at helical form, so as to improve the efficiency of heating surface.
In above-described embodiment, temperature-detecting device 43 can include：Base 431 and thermometer 432.Wherein, base 431 can
It is connected with the inwall with housing 1, when it is implemented, base 431 can be provided with baffle element 433, baffle element 433 can be placed in
The outer wall of housing 1 so that base 431 be connected with housing 1 it is more firm.The first end (lower end shown in Fig. 5) of thermometer 432 can
To be connected with base 431, resistance wire 413 that the second end (upper end shown in Fig. 5) of thermometer 432 can be placed at helical form
Inside so that thermometer 432 can measure the temperature of transformer oil to be measured in real time, accurate data are provided for experiment；This
Outside, the inside for the resistance wire 413 being placed in due to the second end of thermometer 432 at helical form, therefore the resistance wire 413 at helical form
It can be that thermometer 432 provides protection, avoid thermometer 432 from being collided and damage.
In above-described embodiment, cooling device 42 can include：Heat exchange coil 421, pump 422 and fluid reservoir 423.Wherein, change
Hot coil 421 is partially disposed in housing 1, and the liquid feeding end 4211 and outlet end 4212 of heat exchange coil 421 are arranged in housing 1.Tool
When body is implemented, heat exchange coil 421 can be enclosed located at the outside of above-mentioned heater 41.Pump 422 and fluid reservoir 423 are placed in housing
Outside 1, the outlet of pump 422 is connected with liquid feeding end 4211, and the entrance and outlet end 4212 of pump 422 are connected with fluid reservoir 423,
Fluid reservoir 423 can store coolant.When it is implemented, fluid reservoir 423 can be provided with liquid injection port 427, in order to coolant
Injection.Liquid level gauge 425 is also provided with fluid reservoir 423, in order to observe the surplus of coolant in fluid reservoir 423.Pump
422 can be delivered to the coolant in fluid reservoir 423 in heat exchange coil 421, and the coolant in heat exchange coil 421 can circulate
Return in fluid reservoir 423 and be continuing with.When it is implemented, coolant can be water, or absolute ethyl alcohol, or other
The liquid for having cooling effect, the present embodiment do not do any restriction to it.
In the present embodiment, the coolant in fluid reservoir 423 is delivered in heat exchange coil 421 by pump 422, can reach cooling
The purpose of transformer oil to be measured, it is used in combination with heater 41, the temperature stabilization of transformer oil to be measured can be made pre- first
If temperature；In addition, the coolant in heat exchange coil 421 can be recycled back in fluid reservoir 423, and to be continuing with, effective section
Resource is saved.
Hot-spot sensor 23 is also provided with housing 1, and then can accurately detect transformer oil to be measured
Temperature, to measure and control local overtemperature.
Referring to Fig. 6, the preferred structure of cooling device is shown in figure.As illustrated, cooling device 42 can also include：Valve
Block 424, water tank 425 and refrigeration fan 426.Wherein, valve block 424, water tank 425 and refrigeration fan 426 are placed in outside housing 1.Valve
The inlet 4241 of block 424 is connected with the outlet of pump 422, and the liquid outlet 4242 of valve block 424 is connected with liquid feeding end 4211.Water
Case 425 is connected with valve block 424, and refrigeration fan 426 can be arranged at the outer wall of water tank 425.When it is implemented, valve block 424
Both sides can be respectively arranged with water tank 425, and the relative outer wall of each water tank 425 can be respectively arranged with refrigeration fan 426.Change
After coolant in hot coil 421 is recycled back in fluid reservoir 423, coolant first can enter from the inlet 4241 of valve block 424
In valve block 424, then by the water tank 425 of the both sides of valve block 424, then the liquid outlet 4242 of valve block 424 is flowed to.Specific cooling dress
The cooling figure for putting 42 may refer to Fig. 7.
In the present embodiment, coolant is circulated by valve block 424, avoid and made using numerous pipeline circulating cooling liquids
Into space-consuming it is big and pipeline interlocks the problem of complicated；In addition, by the collective effect of water tank 425 and refrigeration fan 426,
Cooling effect can be made more notable, and then improve cooling effectiveness.
Referring to Fig. 2, the preferred structure for the supporter that the present embodiment provides is shown in figure.As illustrated, supporter 2 can be with
Including：Two parallel arrangement of fix bars 22 of side plate 21 and at least two.Each fix bar 22 is respectively arranged at the upper of each side plate 21
Side (for Fig. 2) and lower section (for Fig. 2), also, the both ends of each fix bar 22 respectively with each phase of side plate 21
Connection.The relative wall of each side plate 21 can accordingly offer the multiple necks being spaced apart, and the width of each neck should be with
Insulating paper 5 to be measured is adapted, so that insulating paper to be measured 5 can be installed in neck.When it is implemented, two fix bars 22 can be with
It is respectively arranged at top and front of each side plate 21 (for Fig. 2).
In the present embodiment, the both ends of each fix bar 22 are connected with each side plate 21 respectively, facilitate tearing open for insulating paper 5 to be measured
Dress；In addition, the structure of the supporter 2 is simple, insulating paper 5 to be measured can be reliably fixed, so as to avoid insulating paper 5 to be measured from occurring
Fold.
Referring to Fig. 3, housing 1 can include：The cylinder 13 of top plate 11, bottom plate 12 and both ends open.Wherein, cylinder 13 crimps
Between top plate 11 and bottom plate 12, top plate 11 can be connected with bottom plate 12 by screw rod 14, so as to be incited somebody to action by screw rod 14
Top plate 11, bottom plate 12 and cylinder 13 fix as one.Supporter 2 is placed in cylinder 13, also, supporter 2 can be with bottom plate 12
It is detachably connected.When it is implemented, top plate 11 and bottom plate 12 and cylinder 13 are in sealing contact.Top plate 11 and bottom plate 12
Think quadrangle, screw rod 14 can be multiple, and each screw rod 14 can be respectively distributed to the position of the corner of top plate 11 and bottom plate 12.
Being detachably connected for top plate 11, bottom plate 12 and cylinder 13 can be realized by screw rod 14, so that the installation of the internals of housing 1
It is more convenient.
Referring to Fig. 8, the preferred structure for the agitating device 7 that the present embodiment provides is shown in figure.As illustrated, agitating device
7 are placed in housing 1, and agitating device 7 can stir transformer oil to be measured, so that the temperature of transformer oil to be measured is uniform, so as to carry
The precision of the high subsequently detection to transformer oil to be measured.When it is implemented, agitating device 7 can be with magnetic stirring apparatus 7, magnetic force stirs
Mixing device 7 can include：Installing plate 71, multiple magnetic agitation coils 72 and support frame 73.Wherein, installing plate 71 can be with bottom plate
12 are connected, and each magnetic agitation coil 72 can be located between installing plate 71 and support frame 73, and each magnetic agitation coil 72 can
Think and be circular layout, also, each magnetic agitation coil 72 is rotatably coupled with support frame 73.It should be noted that magnetic force
The structure of agitating device 7 is known to those skilled in the art, therefore here is omitted.
In the various embodiments described above, it can also include：Conservator 8 and vavuum pump 9.Wherein, conservator 8 is placed in shell with vavuum pump 9
Outside body 1.In order to save space and cost, the air bag of conservator 8 and the inner space of housing 1 can be entered using same vavuum pump 9
The operation that row vacuumizes, i.e., the inner space of housing 1 is led to by the airbags of the first pipeline 17 and conservator 8, and second pipe
18 also lead to airbags, and second pipe 18 is connected with the 3rd pipeline 19, and vavuum pump 9 is connected with the 3rd pipeline 19, also
It is to say, air bag passes sequentially through the pipeline 19 of second pipe 18 and the 3rd and is connected with vavuum pump 9.And work as transformer fault simulation system
For it is multiple when, same vavuum pump 9 can also be used to vacuumize the air bag of multiple conservators 8 and the inner space of housing 1
Operation.For example, as shown in figure 1, when transformer fault simulation system be two when, by left side (for Fig. 1) transformation
Device fault simulation system is defined as the first transformer fault simulation system, by right side (for Fig. 1) transformer fault
Simulation system is defined as the second transformer fault simulation system, the second pipe 18 and the 4th of the second transformer fault simulation system
Pipeline 20 is connected, and the 4th pipeline 20 is connected and crossed with the second pipe 18 of the first transformer fault simulation system, crosses
It is connected again by the 3rd pipeline 19 with vavuum pump 9 afterwards.When it is implemented, the outer wall of conservator can be provided with and airbags
Logical liquid level gauge 15, to observe the liquid level in air bag.When transformer oil to be measured is injected into housing 1, transformer to be measured is stored
The device 16 of oil can be connected with the inner space of housing 1.First air bag and the inner space of housing 1 are pumped into using vavuum pump 9
Vacuum, transformer oil to be measured flow into housing 1 under the effect of the pressure, when transformer oil to be measured is full of whole housing 1, stop
The operation vacuumized.Now, transformer oil to be measured is full of whole housing 1, and air bag is then vacuum state.When to transformer to be measured
During oil heating, the transformer oil expanded by heating to be measured in housing 1 overflows, and flows into air bag；When the transformer oil to be measured in housing 1
During the decline of temperature, in the presence of pressure difference, the transformer oil to be measured in air bag is back in housing 1.Specifically vacuumize behaviour
The oil circuit figure of work may refer to Fig. 9.
In the various embodiments described above, it can also include：Casing 10.Wherein, pump 422, fluid reservoir 423, valve block 424, water tank 425
It can be placed in casing 10 with refrigeration fan 426.When it is implemented, fluid reservoir 423 can be connected with the bottom of casing 10.
Housing 1 and conservator 8 can be connected with the outer wall of casing 10.When it is implemented, housing 1 and conservator 8 can be connected to case
The top of body 10.Casing 10 can play protection to pump 422, fluid reservoir 423, valve block 424, water tank 425 and refrigeration fan 426
Effect, to avoid the unfavorable factors such as dust in working environment, external impact to pump 422, fluid reservoir 423, valve block 424, water tank
425 and refrigeration fan 426 service behaviour influence.
In use, carrying out vacuum pumping to air bag and housing 1 first by vavuum pump 9, transformer oil to be measured is in pressure
In the presence of enter housing 1 in, when transformer oil to be measured be full of whole housing 1, stopping vacuum pumping.Then transformation is simulated
Partial discharges fault, disruptive discharge failure and the local overheating fault of device, during this period, can be by adjusting electric supply installation 6
Voltage adjusts strength of discharge, and then simulates partial discharges fault and disruptive discharge failure；Can also be by adjusting the electricity of power supply
Press to adjust the temperature of transformer oil to be measured, and then simulate hot-spot failure.After simulation process carries out certain time, it will treat
Survey transformer oil to take out, so as to the subsequently detection to transformer oil to be measured.
To sum up, the simulation system includes electric discharge device and temperature-adjusting device, by adjusting the voltage of electric supply installation, makes to put
Electric installation discharges transformer oil to be measured and insulating paper to be measured, can be put with the partial discharges fault and breakdown of analogue transformer
Electric fault；The temperature of transformer oil to be measured is adjusted by temperature-adjusting device, can be with the hot-spot of analogue transformer
Failure so that the simulation system both can simulate change again with the partial discharges fault of analogue transformer and disruptive discharge failure
The hot-spot failure of depressor, or the partial discharges fault of transformer, disruptive discharge failure and local overheating fault simultaneously, from
And it is capable of the operating mode of comprehensive simulated transformer reality so that the understanding to the performance of transformer is more comprehensive and accurate, to judge
Transformer material before putting into operation provides reference frame with the presence or absence of Hidden fault.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (16)
- A kind of 1. transformer fault simulation system, it is characterised in that including：Housing (1), transformer oil to be measured is set for filling；Supporter (2), it is placed in the housing (1), the supporter (2) is used to install insulating paper to be measured (5)；Electric discharge device (3), for being electrically connected with electric supply installation (6) and producing electric discharge to the transformer oil to be measured；Temperature-adjusting device (4), for the temperature of the transformer oil to be measured to be adjusted.
- 2. transformer fault simulation system according to claim 1, it is characterised in that the electric discharge device (3) includes：Two Individual conducting connecting bar (31) and two discharge electrodes (32)；Wherein,Each conducting connecting bar (31) is arranged in the housing (1) and is partially disposed in the housing (1), each conduction Connecting rod (31) is placed in the first end of the housing (1) outside and is used to electrically connect with the electric supply installation (6)；Each discharge electrode (32) is placed in the housing (1), also, the first end of each discharge electrode (32) with it is each described The second end that conducting connecting bar (31) is placed in housing (1) is connected correspondingly, the second end of each discharge electrode (32) It is oppositely arranged.
- 3. transformer fault simulation system according to claim 2, it is characterised in that each conducting connecting bar (31) Include：First conducting rod (311), the second conducting rod (312) and conductive contact (314)；Wherein,First conducting rod (311) is arranged in the housing (1) and is partially disposed in the housing (1), and described first is conductive Bar (311) is placed in the first end of housing (1) outside and is connected with the conductive contact (314), the conductive contact (314) be used for Electric supply installation (6) electrical connection；Second conducting rod (312) is placed in the housing (1), also, the first end of second conducting rod (312) and institute State the second end threaded connection of the first conducting rod (311)；The first end of the discharge electrode (32) is connected with the second end of second conducting rod (312).
- 4. transformer fault simulation system according to claim 3, it is characterised in that each conducting connecting bar (31) Also include：Fastener (313)；Wherein,Second end of second conducting rod (312) radially offers first through hole, and the first end of the discharge electrode (32) is worn Located at the first through hole；The side wall of the first through hole offers the second through hole, and the fastener (313) is arranged in second through hole and compressed In the surface of the discharge electrode (32).
- 5. transformer fault simulation system according to claim 1, it is characterised in that temperature-adjusting device (4) bag Include：Heater (41), cooling device (42) and temperature-detecting device (43)；Wherein,The heater (41) and the cooling device (42) are used to make the temperature of the transformer oil to be measured default for first Temperature；The temperature-detecting device (43) is placed in the housing (1), for detecting the temperature of the transformer oil to be measured.
- 6. transformer fault simulation system according to claim 5, it is characterised in that the heater (41) includes： Two electrode stems (411), two installing pipes (412) and a resistance wire (413)；Wherein,Each electrode stem (411) is arranged in the housing (1) and is partially disposed in the housing (1), each electrode stem (411) first end of the housing (1) outside is placed in be used to and power electric connection；Each installing pipe (412) be placed in the housing (1) and respectively with the second end of each electrode stem (411) one by one Accordingly it is connected, the side wall of each installing pipe (412) offers mounting hole (414), in each mounting hole (414) Binding post is provided with, each binding post electrically connects correspondingly with each electrode stem (411) respectively；The resistance wire (413) is placed in the housing (1), also, the both ends of the resistance wire (413) respectively with each peace Binding post in dress hole (414) is connected, and the resistance wire (413) is used to bear the second preset temperature.
- 7. transformer fault simulation system according to claim 6, it is characterised in thatThe middle part of the resistance wire (413) is around being set to helical form, also, each circle resistance wire (413) at helical form Contact connection.
- 8. transformer fault simulation system according to claim 7, it is characterised in that temperature-detecting device (43) bag Include：Base (431) and thermometer (432)；Wherein,The base (431) is connected with the inwall of the housing (1), first end and the base of the thermometer (432) (431) it is connected, the inside for the resistance wire (413) that the second end of the thermometer (432) is placed at helical form.
- 9. transformer fault simulation system according to claim 5, it is characterised in that the cooling device (42) includes： Heat exchange coil (421), pump (422) and fluid reservoir (423)；Wherein,The heat exchange coil (421) is partially disposed in the housing (1), the liquid feeding end (4211) of the heat exchange coil (421) and Outlet end (4212) is arranged in the housing (1)；The pump (422) and the fluid reservoir (423) are placed in the housing (1) outside, the outlet of the pump (422) with it is described enter Liquid end (4211) is connected, and the entrance and the outlet end (4212) of the pump (422) are connected with the fluid reservoir (423) Logical, the fluid reservoir (423) is used to store coolant.
- 10. transformer fault simulation system according to claim 9, it is characterised in that the cooling device (42) is also wrapped Include：Valve block (424), water tank (425) and refrigeration fan (426)；Wherein,The valve block (424), the water tank (425) and the refrigeration fan (426) are placed in the housing (1) outside；The inlet (4241) of the valve block (424) is connected with the outlet of the pump (422), and the valve block (424) goes out liquid Mouth (4242) is connected with the liquid feeding end (4211)；The water tank (425) is connected with the valve block (424), and the refrigeration fan (426) is arranged at the water tank (425) Outer wall.
- 11. transformer fault simulation system according to claim 1, it is characterised in that the supporter (2) includes：Two Individual parallel arrangement of side plate (21) and at least two fix bars (22)；Each fix bar (22) is respectively arranged above and below each side plate (21), also, each fix bar (22) both ends are connected with each side plate (21) respectively；The relative wall of each side plate (21) accordingly offers multiple necks, and the neck is described to be measured exhausted for installing Edge paper (5).
- 12. the transformer fault simulation system according to any one of claim 1 to 11, it is characterised in that the housing (1) include：The cylinder (13) of top plate (11), bottom plate (12) and both ends open；Wherein,The cylinder (13) is crimped between the top plate (11) and the bottom plate (12), the top plate (11) and the bottom plate (12) it is connected by screw rod (14)；The supporter (2) is placed in the cylinder (13), also, the supporter (2) and the bottom plate (12) are removably Connection.
- 13. the transformer fault simulation system according to any one of claim 1 to 11, it is characterised in that also include：Stir Mix device (7)；Wherein,The agitating device (7) is placed in the housing (1), and the agitating device (7) is used to stir the transformer oil to be measured So that the temperature of the transformer oil to be measured is uniform.
- 14. transformer fault simulation system according to claim 9, it is characterised in that also include：Conservator (8) and vacuum Pump (9)；Wherein,The conservator (8) is placed in the housing (1) outside with the vavuum pump (9)；The air bag of the conservator (8) is connected with the inner space of the housing (1), the vavuum pump (9) and the air bag phase Connection, the vavuum pump (9) are used to be evacuated the air bag and the housing (1) inner space.
- 15. transformer fault simulation system according to claim 14, it is characterised in that also include：Casing (10)；Its In,The pump (422) and the fluid reservoir (423) are placed in the casing (10)；The outer wall of the housing (1) and the conservator (8) with the casing (10) is connected.
- 16. transformer fault simulation system according to claim 15, it is characterised in thatThe valve block (424), the water tank (425) and the refrigeration fan (426) are placed in the casing (10).
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| CN112557993A (en) * | 2020-11-13 | 2021-03-26 | 广东电网有限责任公司广州供电局 | Vegetable oil transformer thermal fault simulation system based on eddy current heating |
| CN114089059A (en) * | 2021-11-05 | 2022-02-25 | 广东电网有限责任公司广州供电局 | Transformer internal thermal fault simulation experiment device |
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| CN117572119B (en) * | 2023-11-17 | 2024-05-24 | 国网宁夏电力有限公司电力科学研究院 | Method, medium and system for positioning local overheat fault of power grid converter transformer |
| CN117805689A (en) * | 2024-02-27 | 2024-04-02 | 山东泰莱电气股份有限公司 | Transformer internal fault simulation experiment device |
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