CN113589123A - Test device for fault simulation of extra-high voltage transformer - Google Patents
Test device for fault simulation of extra-high voltage transformer Download PDFInfo
- Publication number
- CN113589123A CN113589123A CN202110679051.1A CN202110679051A CN113589123A CN 113589123 A CN113589123 A CN 113589123A CN 202110679051 A CN202110679051 A CN 202110679051A CN 113589123 A CN113589123 A CN 113589123A
- Authority
- CN
- China
- Prior art keywords
- voltage coil
- low
- voltage
- coil assembly
- gasket
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 42
- 238000004088 simulation Methods 0.000 title claims abstract description 28
- 238000003825 pressing Methods 0.000 claims description 45
- 230000000712 assembly Effects 0.000 claims description 31
- 238000000429 assembly Methods 0.000 claims description 31
- 238000005192 partition Methods 0.000 claims description 16
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 13
- 238000012423 maintenance Methods 0.000 abstract description 10
- 125000006850 spacer group Chemical group 0.000 description 12
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 7
- 238000009413 insulation Methods 0.000 description 5
- 239000003921 oil Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- 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
- G01R31/20—Preparation of articles or specimens to facilitate testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0416—Connectors, terminals
-
- 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
-
- 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
- G01R31/1218—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 using optical methods; using charged particle, e.g. electron, beams or X-rays
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
Abstract
The invention relates to a test device for fault simulation of an extra-high voltage transformer, which comprises a shell, a low-voltage coil assembly and a high-voltage coil assembly, wherein the shell is provided with a plurality of high-voltage coil holes; the shell is enclosed into an accommodating cavity, a first end cover is arranged at the top end cover of the accommodating cavity, a second end cover is arranged at the bottom end cover of the accommodating cavity, two low-pressure sleeves and two high-pressure sleeves are arranged on the first end cover, and the two low-pressure sleeves and the two high-pressure sleeves are communicated with the accommodating cavity; the low-voltage coil assembly and the high-voltage coil assembly are both accommodated in the accommodating cavity, the low-voltage coil assembly and the high-voltage coil assembly are arranged side by side, two low-voltage taps are arranged on the low-voltage coil assembly and are respectively inserted into the two low-voltage sleeves, two high-voltage taps are arranged on the high-voltage coil assembly and are respectively inserted into the two high-voltage sleeves; so set up, improved maintenance speed after the simulation trouble, reduced cost of maintenance.
Description
Technical Field
The invention relates to the technical field of electrical equipment, in particular to a test device for fault simulation of an extra-high voltage transformer.
Background
At present, the reliability of an extra-high voltage transformer seriously influences the intrinsic safety of a power grid. In recent years, a rapid development type fault case from the detection of a partial discharge characteristic quantity to the main insulation breakdown or the adjacent breakdown of the partial discharge characteristic quantity is generated in a factory test and a handover test of an extra-high voltage transformer.
In order to deeply research the rapid development type fault mechanism of the ultra-high voltage transformer, the ultra-high voltage transformer needs to be subjected to multiple faults, and the fault characteristics of the ultra-high voltage transformer are obtained through analysis of a partial discharge characteristic map.
However, the extra-high voltage transformer equipment is expensive, and after breakdown of a fault, the repair workload is huge, so that the maintenance cost is high.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the test device for simulating the fault of the ultra-high voltage transformer, which has the advantages of improving the maintenance speed and reducing the maintenance cost.
The above object of the present invention is achieved by the following technical solutions: the utility model provides a test device for special high voltage transformer fault simulation which characterized in that: the high-voltage coil assembly comprises a shell, a low-voltage coil assembly and a high-voltage coil assembly; the shell is enclosed into an accommodating cavity, a first end cover is arranged at the top end cover of the accommodating cavity, a second end cover is arranged at the bottom end cover of the accommodating cavity, two low-pressure sleeves and two high-pressure sleeves are arranged on the first end cover, and the two low-pressure sleeves and the two high-pressure sleeves are communicated with the accommodating cavity; the low-voltage coil assembly and the high-voltage coil assembly are all accommodated in the accommodating cavity, the low-voltage coil assembly and the high-voltage coil assembly are arranged side by side, two low-voltage taps are arranged on the low-voltage coil assembly and are inserted into the low-voltage sleeve respectively, two high-voltage taps are arranged on the high-voltage coil assembly and are inserted into the high-voltage sleeve respectively.
Preferably, the high-voltage coil assembly comprises a high-voltage coil, two high-voltage coil gasket assemblies and two high-voltage coil pressing plate assemblies, wherein a high-voltage coil partition plate is inserted into one side of the high-voltage coil, which faces the low-voltage coil assembly, and extends along the central axis direction of the high-voltage coil, and the two high-voltage coil gasket assemblies are respectively arranged at two opposite ends of the high-voltage coil; the two high-voltage coil pressing plate assemblies are respectively arranged on one sides of the two high-voltage coil gasket assemblies, which are deviated from the high-voltage coil assemblies.
Preferably, according to the test device for fault simulation of the extra-high voltage transformer, the two high-voltage taps respectively extend out of two opposite ends of the high-voltage coil.
Preferably, the test device for fault simulation of the ultra-high voltage transformer provided by the invention comprises two arc-shaped pressing plates which are oppositely arranged, two accommodating grooves are formed in each of the two arc-shaped pressing plates and are oppositely arranged, a plurality of silicon steel sheets are inserted into each of the two accommodating grooves, and the plurality of silicon steel sheets are stacked in the accommodating grooves.
Preferably, according to the test device for fault simulation of the ultra-high voltage transformer, a lead port is formed in the arc-shaped pressing plate and is located between the two accommodating grooves.
Preferably, the high-voltage coil gasket assembly comprises a backing ring and a backing plate, the backing plate is arranged at the top end of the backing ring, and one end of the backing ring, which is far away from the backing plate, is abutted against the high-voltage coil.
Preferably, the low-voltage coil assembly comprises a low-voltage coil, two low-voltage coil pressing plates and two low-voltage coil backing plates, wherein a first low-voltage coil partition plate and a second low-voltage coil partition plate are respectively inserted into two opposite sides of the low-voltage coil, the first low-voltage coil partition plate and the second low-voltage coil partition plate both extend along the central axis direction of the low-voltage coil, and the two low-voltage coil backing plates are respectively arranged at two opposite ends of the low-voltage coil; the two low-voltage coil pressing plates are respectively arranged on one side of the two low-voltage coil base plates, which is far away from the low-voltage coil.
Preferably, the first end cover is provided with a plurality of lifting lugs, and the plurality of lifting lugs are arranged at intervals around the circumference of the first end cover.
Preferably, the test device for fault simulation of the extra-high voltage transformer further comprises two gasket assemblies, the two gasket assemblies are oppositely arranged in the accommodating cavity, the low-voltage coil assembly and the high-voltage coil assembly are both arranged between the two gasket assemblies, two ends of the low-voltage coil assembly are respectively abutted against the two gasket assemblies, and two ends of the high-voltage coil assembly are respectively abutted against the two gasket assemblies; the gasket assembly comprises an upper gasket, a lower gasket and an insulating pressing plate, the upper gasket is arranged between the lower gasket and the insulating pressing plate, the top end of the upper gasket is abutted to the insulating pressing plate, and the bottom end of the upper gasket is abutted to the lower gasket.
Preferably, the test device for fault simulation of the ultra-high voltage transformer provided by the invention is characterized in that an observation port is formed in the outer side wall of the shell, the observation port is communicated with the accommodating cavity, and a transparent plate is arranged on the upper cover of the observation port.
In conclusion, the beneficial technical effects of the invention are as follows: the test device for the fault simulation of the extra-high voltage transformer comprises a shell, a low-voltage coil assembly and a high-voltage coil assembly; the shell is enclosed into an accommodating cavity, a first end cover is arranged at the top end cover of the accommodating cavity, a second end cover is arranged at the bottom end cover of the accommodating cavity, two low-pressure sleeves and two high-pressure sleeves are arranged on the first end cover, and the two low-pressure sleeves and the two high-pressure sleeves are communicated with the accommodating cavity; the low-voltage coil assembly and the high-voltage coil assembly are both accommodated in the accommodating cavity, the low-voltage coil assembly and the high-voltage coil assembly are arranged side by side, two low-voltage taps are arranged on the low-voltage coil assembly and are respectively inserted into the two low-voltage sleeves, two high-voltage taps are arranged on the high-voltage coil assembly and are respectively inserted into the two high-voltage sleeves; so set up, improved maintenance speed after the simulation trouble, reduced cost of maintenance.
Drawings
Fig. 1 is a schematic overall structure diagram of a test device for fault simulation of an ultra-high voltage transformer according to an embodiment of the present invention.
Fig. 2 is a cross sectional view of a test device for fault simulation of an ultra-high voltage transformer according to an embodiment of the invention.
Fig. 3 is a schematic structural diagram of a high-voltage coil pressing plate assembly in the testing apparatus for fault simulation of the ultra-high voltage transformer according to the embodiment of the invention.
In the figure, 1, test apparatus; 10. a housing; 101. a viewing port; 102. a high voltage bushing; 103. a low-pressure bushing; 20. a low voltage coil assembly; 201. a low-voltage coil; 2011. a low-voltage tap; 202. a low-voltage coil pressing plate; 203. a low-voltage coil backing plate; 204. a first low voltage coil separator; 205. a second low voltage coil separator; 30. a high voltage coil assembly; 301. a high-voltage coil; 3011. a high-voltage tap; 302. a high-voltage coil pressing plate assembly; 3021. a circular arc-shaped pressing plate; 3022. accommodating grooves; 3023. silicon steel sheets; 3024. a wire leading port; 303. a backing ring; 304. a base plate; 305. a high voltage coil separator; 306. an L-shaped fixing clip; 40. a washer assembly; 401. an upper gasket; 402. a lower gasket; 403. and an insulating pressing plate.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 and 2, a testing apparatus 1 for fault simulation of an extra-high voltage transformer disclosed by the invention comprises a housing 10, a low-voltage coil assembly 20 and a high-voltage coil assembly 30; the housing 10 encloses a receiving cavity, and the cross-sectional shape of the receiving cavity may be circular, rectangular or other shapes, which is not limited in this embodiment. A first end cover is arranged at the top end cover of the accommodating cavity, a second end cover is arranged at the bottom end cover of the accommodating cavity, two low-voltage sleeves 103 and two high-voltage sleeves 102 are arranged on the first end cover, and the two low-voltage sleeves 103 and the two high-voltage sleeves 102 are both communicated with the accommodating cavity; the first end cover and the second end cover are arranged in parallel, and the central axes of the two high-voltage bushings 102 and the central axes of the two low-voltage bushings 103 are perpendicular to the first end cover. Furthermore, an observation port 101 is formed in the outer side wall of the shell 10, the observation port 101 is communicated with the accommodating cavity, and a transparent plate is covered on the observation port 101; by arranging the observation port 101, the discharge process is convenient to observe and record, and the discharge path is analyzed.
In this embodiment, a high-speed camera is disposed outside the transparent plate, and the specific process of discharge is photographed by the high-speed camera, so that the discharge path can be analyzed conveniently.
Illustratively, the transparent plate can adopt acrylic material, and certainly, the transparent plate can also adopt other materials as long as satisfy that the light transmissivity is good and high temperature resistant.
With continued reference to fig. 1, in the present embodiment, the first end cap is provided with a plurality of lifting lugs, and the plurality of lifting lugs are arranged around the first end cap at intervals in the circumferential direction; through setting up a plurality of lugs, the lug is connected with outside lifting device, after a test, lifts by crane test device 1 through lifting device, but the damage part is restoreed fast to it discharges to arrange new point again, and the suspension discharges, and along discharging in the oil and gap discharge etc. rapid development insulation defect develops next test.
The test device 1 provided in this embodiment further includes two gasket assemblies 40, the two gasket assemblies 40 are disposed in the accommodating cavity, the low-voltage coil assembly 20 and the high-voltage coil assembly 30 are both disposed between the two gasket assemblies 40, two ends of the low-voltage coil assembly 20 are abutted against the two gasket assemblies 40, and two ends of the high-voltage coil assembly 30 are abutted against the two gasket assemblies 40; by providing the washer assembly 40, the height adjustment of the low voltage coil assembly 20 and the high voltage coil assembly 30 is facilitated.
Specifically, the low-voltage coil assembly 20 and the high-voltage coil assembly 30 are both accommodated in the accommodating cavity, the high-voltage coil assembly 30 and the low-voltage coil assembly 20 are arranged side by side, and the extending direction of the high-voltage coil assembly 30 is parallel to the extending direction of the low-voltage coil assembly 20. The accommodating cavity is filled with oil, and the oil has an insulating effect on the low-voltage coil assembly 20 and the high-voltage coil assembly 30.
Further, in the present embodiment, the gasket assembly 40 includes an upper gasket 401, a lower gasket 402, and an insulating pressing plate 403, the upper gasket 401 is disposed between the lower gasket 402 and the insulating pressing plate 403, a top end of the upper gasket 401 abuts against the insulating pressing plate 403, and a bottom end of the upper gasket 401 abuts against the lower gasket 402; by providing the insulating pressing plate 403, thereby, the low voltage coil assembly 20 and the high voltage coil assembly 30 are facilitated to be pressed; meanwhile, the insulating function is achieved.
For example, the insulating pressing plate 403 may be made of wood, but of course, other insulating materials may be used for the insulating pressing plate 403.
Specifically, a connecting member is disposed on a side of the insulating pressing plate 403 away from the upper gasket 401, one end of the connecting member is connected to the insulating pressing plate 403, and the other end of the connecting member is connected to the housing 10.
In this embodiment, the low-voltage coil assembly 20 is provided with two low-voltage taps 2011, the two low-voltage taps 2011 are respectively inserted into the two low-voltage bushings 103, the high-voltage coil assembly 30 is provided with two high-voltage taps 3011, and the two high-voltage taps 3011 are respectively inserted into the two high-voltage bushings 102.
With reference to fig. 2, in the present embodiment, the high-voltage coil assembly 30 includes a high-voltage coil 301, two high-voltage coil spacer assemblies, and two high-voltage coil pressing plate assemblies 302, a high-voltage coil separator 305 is inserted into one side of the high-voltage coil 301 facing the low-voltage coil assembly 20, the high-voltage coil separator 305 extends along a central axis direction of the high-voltage coil 301, and the two high-voltage coil spacer assemblies are respectively disposed at two opposite ends of the high-voltage coil 301; the two high-voltage coil pressing plate assemblies 302 are respectively arranged on one sides of the two high-voltage coil gasket assemblies, which are far away from the high-voltage coil assembly 30; on one hand, by arranging the high-voltage coil gasket assembly, the height of the high-voltage coil 301 can be adjusted through the high-voltage coil gasket assembly; on the other hand, by providing the high-voltage coil pressing plate assembly 302, it is convenient to press the high-voltage coil 301 against the high-voltage coil spacer assembly.
Further, two high voltage taps 3011 extend from opposite ends of the high voltage coil 301.
Specifically, taking the orientation shown in fig. 2 as an example, one of the high-voltage taps 3011 extends upward from the upper end of the high-voltage coil 301 along the central axis direction of the high-voltage coil 301, and the other high-voltage tap 3011 extends from the lower end of the high-voltage coil 301 along the radial direction of the high-voltage coil 301, then bends, and extends upward along the central axis direction of the high-voltage coil 301.
In this embodiment, the high-voltage coil gasket assembly includes a backing ring 303 and a backing plate 304, the backing plate 304 is disposed at the top end of the backing ring 303, and one end of the backing ring 303, which is away from the backing plate 304, abuts against the high-voltage coil 301; by providing the backing ring 303 and the backing plate 304, the height adjustment of the high-voltage coil 301 is facilitated.
With reference to fig. 2, in this embodiment, the high-voltage coil spacer assembly further includes an L-shaped fixing clip 306, one end of the L-shaped fixing clip 306 is inserted between the low-voltage coil assembly 20 and the high-voltage coil spacer 305, and the other end of the L-shaped fixing clip 306 is connected to the high-voltage tap 3011 at the upper end through a gap between the high-voltage coil pressure plate assembly 302 and the high-voltage coil spacer assembly; by providing the L-shaped fixing clip 306, the L-shaped fixing clip 306 is used to fix the high-voltage tap 3011.
With reference to fig. 3, in the present embodiment, the high-voltage coil pressing plate assembly 302 includes two arc-shaped pressing plates 3021 that are oppositely disposed, two accommodating grooves 3022 are respectively formed on the two arc-shaped pressing plates 3021, the two accommodating grooves 3022 are oppositely disposed, a plurality of silicon steel sheets 3023 are respectively inserted into the two accommodating grooves 3022, and the plurality of silicon steel sheets 3023 are stacked in the accommodating grooves 3022; through setting up silicon steel sheet 3023, silicon steel sheet 3023 is used for simulating extra-high voltage alternating current transformer's corresponding structure, from this, has improved experimental accuracy.
Specifically, two holding tanks 3022 all are the lobe of a lung form, and holding tank 3022 interpolation is equipped with a plurality of silicon steel sheets 3023 of assorted with it, and the height that a plurality of silicon steel sheets 3023 pile up equals with holding tank 3022's degree of depth, has all seted up a plurality of louvres on every silicon steel sheet 3023, and a plurality of louvre intervals set up on silicon steel sheet 3023.
Further, in this embodiment, the arc-shaped pressing plate 3021 is provided with a lead port 3024, and the lead port 3024 is located between the two accommodating grooves 3022; by providing the lead port 3024, the high voltage tap 3011 at the upper end of the high voltage coil 301 is passed out through the lead port 3024.
With reference to fig. 2, in the present embodiment, the low-voltage coil assembly 20 includes a low-voltage coil 201, two low-voltage coil pressing plates 202, and two low-voltage coil backing plates 203, wherein a first low-voltage coil partition 204 and a second low-voltage coil partition 205 are respectively inserted into two opposite sides of the low-voltage coil 201, the first low-voltage coil partition 204 and the second low-voltage coil partition 205 both extend along a central axis direction of the low-voltage coil 201, and the two low-voltage coil backing plates 203 are respectively disposed at two opposite ends of the low-voltage coil 201; the two low-voltage coil pressing plates 202 are respectively arranged on one sides of the two low-voltage coil backing plates 203, which are far away from the low-voltage coil 201; on one hand, the low-voltage coil backing plate 203 is arranged, so that the height of the low-voltage coil 201 can be conveniently adjusted; on the other hand, the low-voltage coil 201 and the low-voltage coil backing plate 203 are conveniently pressed by arranging the low-voltage coil pressing plate 202.
Specifically, the low-voltage coil 201 and the high-voltage coil 301 are arranged at an interval, a central axis of the low-voltage coil 201 is parallel to a central axis of the high-voltage coil 301, and taking the orientation shown in fig. 2 as an example, the first low-voltage coil partition 204 is located on the left side of the low-voltage coil 201, and the second low-voltage coil partition 205 is located on the right side of the low-voltage coil 201. One end of L-shaped fixing clip 306 is inserted between second low-voltage coil spacer 205 and high-voltage coil spacer 305, and by providing first low-voltage coil spacer 204 and second low-voltage coil spacer 205, first low-voltage coil spacer 204 and second low-voltage coil spacer 205 insulate between low-voltage coil 201 and high-voltage coil 301.
In this embodiment, two low voltage taps 2011 extend from two opposite ends of the low voltage coil 201, where, taking the orientation shown in fig. 2 as an example, one of the low voltage taps 2011 extends upward from the upper end of the low voltage coil 201 along the central axis of the low voltage coil 201, then bends, and extends along the radial direction of the low voltage coil 201; the other low voltage tap 2011 extends downwards from the lower end of the low voltage coil 201 along the central axis of the low voltage coil 201, then bends to extend along the radial direction of the low voltage coil 201.
The test process of the test device 1 for simulating the fault of the extra-high voltage transformer provided by the embodiment is as follows: measures such as placing metal blocks in the vicinity of the high-voltage coil pressing plate assembly 302 at the upper end of the high-voltage coil 301 and the low-voltage tap 2011 at the upper end of the low-voltage coil 201 to cause insulation damage and the like are taken, so that the test device 1 generates insulation defects; then, a slow voltage is applied from the low-voltage tap 2011, the partial discharge condition of the test device 1 is detected by a partial discharge detection means, and meanwhile, a specific discharge process is shot by a high-speed camera; when the partial discharge capacity is more than 2000pC and exceeds 5 minutes, or the metal block is broken down, the voltage is rapidly reduced to zero; and finally, discharging oil in the accommodating cavity, hoisting the test device 1 through the hoisting device, repairing the insulation damage area, and then carrying out the next test.
The test device 1 for simulating the fault of the extra-high voltage transformer provided by the embodiment is a test device 1 for simulating the fault of the extra-high voltage transformer, and comprises a shell 10, a low-voltage coil assembly 20 and a high-voltage coil assembly 30; the shell 10 is enclosed into an accommodating cavity, a first end cover is arranged at the top end cover of the accommodating cavity, a second end cover is arranged at the bottom end cover of the accommodating cavity, two low-pressure sleeves 103 and two high-pressure sleeves 102 are arranged on the first end cover, and the two low-pressure sleeves 103 and the two high-pressure sleeves 102 are both communicated with the accommodating cavity; the low-voltage coil assembly 20 and the high-voltage coil assembly 30 are both accommodated in the accommodating cavity, the low-voltage coil assembly 20 and the high-voltage coil assembly 30 are arranged side by side, two low-voltage taps 2011 are arranged on the low-voltage coil assembly 20, the two low-voltage taps 2011 are respectively inserted into the two low-voltage bushings 103, two high-voltage taps 3011 are arranged on the high-voltage coil assembly 30, and the two high-voltage taps 3011 are respectively inserted into the two high-voltage bushings 102; so set up, improved maintenance speed after the simulation trouble, reduced cost of maintenance.
The test device 1 for simulating the fault of the extra-high voltage transformer provided by the invention has the following advantages: the device has simple structure, easy manufacture and convenient maintenance and replacement.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Finally, it should be noted that: it should be understood that the above examples are only for clearly illustrating the present invention and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the scope of the invention.
Claims (10)
1. The utility model provides a test device for special high voltage transformer fault simulation which characterized in that: the high-voltage coil assembly comprises a shell, a low-voltage coil assembly and a high-voltage coil assembly;
the shell is enclosed into an accommodating cavity, a first end cover is arranged at the top end cover of the accommodating cavity, a second end cover is arranged at the bottom end cover of the accommodating cavity, two low-pressure sleeves and two high-pressure sleeves are arranged on the first end cover, and the two low-pressure sleeves and the two high-pressure sleeves are communicated with the accommodating cavity;
the low-voltage coil assembly and the high-voltage coil assembly are all accommodated in the accommodating cavity, the low-voltage coil assembly and the high-voltage coil assembly are arranged side by side, two low-voltage taps are arranged on the low-voltage coil assembly and are inserted into the low-voltage sleeve respectively, two high-voltage taps are arranged on the high-voltage coil assembly and are inserted into the high-voltage sleeve respectively.
2. The test device for fault simulation of the extra-high voltage transformer according to claim 1, wherein: the high-voltage coil assembly comprises a high-voltage coil, two high-voltage coil gasket assemblies and two high-voltage coil pressing plate assemblies, wherein a high-voltage coil partition plate is inserted into one side of the high-voltage coil, which faces the low-voltage coil assembly, extends along the central axis direction of the high-voltage coil, and the two high-voltage coil gasket assemblies are respectively arranged at two opposite ends of the high-voltage coil;
the two high-voltage coil pressing plate assemblies are respectively arranged on one sides of the two high-voltage coil gasket assemblies, which are deviated from the high-voltage coil assemblies.
3. The test device for fault simulation of the extra-high voltage transformer according to claim 2, wherein: the two high-voltage taps extend out from two opposite ends of the high-voltage coil respectively.
4. The test device for fault simulation of the extra-high voltage transformer according to claim 2, wherein: the high-voltage coil pressing plate assembly comprises two opposite arc-shaped pressing plates, two accommodating grooves are formed in the arc-shaped pressing plates and are arranged oppositely, a plurality of silicon steel sheets are inserted into the accommodating grooves, and the silicon steel sheets are stacked in the accommodating grooves.
5. The test device for fault simulation of the extra-high voltage transformer according to claim 4, wherein: a lead port is formed in the arc-shaped pressing plate and located between the two accommodating grooves.
6. The test device for fault simulation of the extra-high voltage transformer according to claim 2, wherein: the high-voltage coil gasket assembly comprises a backing ring and a backing plate, the backing plate is arranged on the top end of the backing ring, and one end of the backing ring, which deviates from the backing plate, is abutted to the high-voltage coil.
7. The test device for fault simulation of the extra-high voltage transformer according to claim 1, wherein: the low-voltage coil assembly comprises a low-voltage coil, two low-voltage coil pressing plates and two low-voltage coil backing plates, wherein a first low-voltage coil partition plate and a second low-voltage coil partition plate are respectively inserted into two opposite sides of the low-voltage coil, the first low-voltage coil partition plate and the second low-voltage coil partition plate both extend along the central axis direction of the low-voltage coil, and the two low-voltage coil backing plates are respectively arranged at two opposite ends of the low-voltage coil;
the two low-voltage coil pressing plates are respectively arranged on one side of the two low-voltage coil base plates, which is far away from the low-voltage coil.
8. The test device for fault simulation of the extra-high voltage transformer according to claim 1, wherein: the first end cover is provided with a plurality of lifting lugs, and the plurality of lifting lugs are arranged around the first end cover at intervals in the circumferential direction.
9. The test device for fault simulation of the extra-high voltage transformer according to claim 1, wherein: the two gasket assemblies are oppositely arranged in the accommodating cavity, the low-voltage coil assembly and the high-voltage coil assembly are arranged between the two gasket assemblies, two ends of the low-voltage coil assembly are respectively abutted against the two gasket assemblies, and two ends of the high-voltage coil assembly are respectively abutted against the two gasket assemblies;
the gasket assembly comprises an upper gasket, a lower gasket and an insulating pressing plate, the upper gasket is arranged between the lower gasket and the insulating pressing plate, the top end of the upper gasket is abutted to the insulating pressing plate, and the bottom end of the upper gasket is abutted to the lower gasket.
10. The test device for fault simulation of the extra-high voltage transformer according to claim 1, wherein: the outer side wall of the shell is provided with an observation port, the observation port is communicated with the accommodating cavity, and a transparent plate is arranged on the upper cover of the observation port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110679051.1A CN113589123A (en) | 2021-06-18 | 2021-06-18 | Test device for fault simulation of extra-high voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110679051.1A CN113589123A (en) | 2021-06-18 | 2021-06-18 | Test device for fault simulation of extra-high voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113589123A true CN113589123A (en) | 2021-11-02 |
Family
ID=78244040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110679051.1A Pending CN113589123A (en) | 2021-06-18 | 2021-06-18 | Test device for fault simulation of extra-high voltage transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113589123A (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2369330Y (en) * | 1999-01-18 | 2000-03-15 | 李永健 | Fully sealed discharge coil |
| CN101145432A (en) * | 2007-08-27 | 2008-03-19 | 北海银河高科技产业股份有限公司 | Dry type transformer high and low voltage foil type coil integral assembling method |
| JP2011233557A (en) * | 2010-04-23 | 2011-11-17 | Chugoku Electric Power Co Inc:The | Simulated transformer and withstand voltage simulated test device |
| CN103680875A (en) * | 2013-12-20 | 2014-03-26 | 保定天威保变电气股份有限公司 | Built-in magnetic conductive pressing plate structures of transformer |
| CN103884946A (en) * | 2014-04-04 | 2014-06-25 | 国家电网公司 | Transformer fault simulating device |
| CN104766711A (en) * | 2014-11-17 | 2015-07-08 | 平高集团有限公司 | On-load capacitance and voltage regulating transformer and coil module thereof |
| CN204595118U (en) * | 2015-04-28 | 2015-08-26 | 深圳供电局有限公司 | A kind of test unit possessing Power Transformer Faults analog functuion |
| CN207503797U (en) * | 2017-12-09 | 2018-06-15 | 山东希波电气科技股份有限公司 | Two-tap intermediate frequency exciting test transformer |
| CN108535614A (en) * | 2018-05-09 | 2018-09-14 | 山东希波电气科技股份有限公司 | High ferro moving vehicle set transformer bushing scene local discharge detection device |
| CN109444690A (en) * | 2018-11-21 | 2019-03-08 | 贵州电网有限责任公司 | A kind of test method of analogue transformer built-in electrical insulation defect electric discharge |
| CN109870638A (en) * | 2019-02-25 | 2019-06-11 | 华能国际电力股份有限公司 | A kind of shelf depreciation defects simulation test entity transformer |
| CN209432952U (en) * | 2018-11-21 | 2019-09-24 | 贵州电网有限责任公司 | Inside transformer insulation defect Discharge Simulation device |
| CN111289858A (en) * | 2020-03-19 | 2020-06-16 | 山东电力设备有限公司 | Method for judging partial discharge inside transformer |
| CN212084828U (en) * | 2020-05-15 | 2020-12-04 | 辽阳天成实业有限公司 | 12-pulse direct-current smelting electric smelting magnesium transformer |
| CN213183922U (en) * | 2020-08-19 | 2021-05-11 | 宁波奥克斯高科技有限公司 | High-voltage coil winding structure and transformer applying same |
-
2021
- 2021-06-18 CN CN202110679051.1A patent/CN113589123A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2369330Y (en) * | 1999-01-18 | 2000-03-15 | 李永健 | Fully sealed discharge coil |
| CN101145432A (en) * | 2007-08-27 | 2008-03-19 | 北海银河高科技产业股份有限公司 | Dry type transformer high and low voltage foil type coil integral assembling method |
| JP2011233557A (en) * | 2010-04-23 | 2011-11-17 | Chugoku Electric Power Co Inc:The | Simulated transformer and withstand voltage simulated test device |
| CN103680875A (en) * | 2013-12-20 | 2014-03-26 | 保定天威保变电气股份有限公司 | Built-in magnetic conductive pressing plate structures of transformer |
| CN103884946A (en) * | 2014-04-04 | 2014-06-25 | 国家电网公司 | Transformer fault simulating device |
| CN104766711A (en) * | 2014-11-17 | 2015-07-08 | 平高集团有限公司 | On-load capacitance and voltage regulating transformer and coil module thereof |
| CN204595118U (en) * | 2015-04-28 | 2015-08-26 | 深圳供电局有限公司 | A kind of test unit possessing Power Transformer Faults analog functuion |
| CN207503797U (en) * | 2017-12-09 | 2018-06-15 | 山东希波电气科技股份有限公司 | Two-tap intermediate frequency exciting test transformer |
| CN108535614A (en) * | 2018-05-09 | 2018-09-14 | 山东希波电气科技股份有限公司 | High ferro moving vehicle set transformer bushing scene local discharge detection device |
| CN109444690A (en) * | 2018-11-21 | 2019-03-08 | 贵州电网有限责任公司 | A kind of test method of analogue transformer built-in electrical insulation defect electric discharge |
| CN209432952U (en) * | 2018-11-21 | 2019-09-24 | 贵州电网有限责任公司 | Inside transformer insulation defect Discharge Simulation device |
| CN109870638A (en) * | 2019-02-25 | 2019-06-11 | 华能国际电力股份有限公司 | A kind of shelf depreciation defects simulation test entity transformer |
| CN111289858A (en) * | 2020-03-19 | 2020-06-16 | 山东电力设备有限公司 | Method for judging partial discharge inside transformer |
| CN212084828U (en) * | 2020-05-15 | 2020-12-04 | 辽阳天成实业有限公司 | 12-pulse direct-current smelting electric smelting magnesium transformer |
| CN213183922U (en) * | 2020-08-19 | 2021-05-11 | 宁波奥克斯高科技有限公司 | High-voltage coil winding structure and transformer applying same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107015077A (en) | A kind of deformation of transformer winding analogue means | |
| CN103760448A (en) | Comprehensive live test method of insulation defects of metal oxide arrester for electric power | |
| CN109883625B (en) | Fuel cell leak detection and running-in test method | |
| CN107728029B (en) | Sensor material and insulating gas compatibility test system and related test method | |
| CN113589123A (en) | Test device for fault simulation of extra-high voltage transformer | |
| CN105989998A (en) | High-overload high-temperature-resistant oil-immersed transformer | |
| CN115389874A (en) | Electrical cabinet insulation performance online detection method | |
| CN204718774U (en) | A kind of measurement mechanism of microchannel plate resolving power | |
| CN210604863U (en) | Alternating current voltage withstand test machine for PTC heater | |
| CN112242688A (en) | Lightning arrester for high-altitude power distribution system | |
| US20060226944A1 (en) | Adjustable locking wedge system apparatus and method | |
| CN112132426A (en) | Quality evaluation method for oil-immersed distribution transformer | |
| CN217212998U (en) | Liquid cooling plate coating pressure resistance test tool | |
| Ahmed | Analysis of partial discharge in OIP bushing models | |
| CN104749499A (en) | Movable testing system for transformer inter-turn insulating electrical aging simulation test | |
| CN109100622A (en) | Installation simulator for the experiment of converter transformer paper oil insulation high pressure characteristics | |
| CN220137308U (en) | Withstand voltage test electrode and contain its withstand voltage test auxiliary jig | |
| CN104730486A (en) | High-temperature and low-voltage aging test device | |
| CN211698054U (en) | Partial discharge online monitoring device for high-voltage switch cabinet | |
| CN220544751U (en) | Stator core structure of high-voltage motor | |
| CN201697999U (en) | Circuit breaker vacuum interrupter break alternating-current withstand voltage test stand | |
| CN216564083U (en) | Convenient low-voltage capacitor box who overhauls | |
| CN211955334U (en) | Conductive copper plate is reference block for ultrasonic testing | |
| CN113063532B (en) | Fuel element grid clamping force detection device and method | |
| CN219065647U (en) | Vegetable oil paper composite insulation electrical performance test system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |