CN206638775U - A kind of transformer fault simulation experimental provision - Google Patents
A kind of transformer fault simulation experimental provision Download PDFInfo
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- CN206638775U CN206638775U CN201720339805.8U CN201720339805U CN206638775U CN 206638775 U CN206638775 U CN 206638775U CN 201720339805 U CN201720339805 U CN 201720339805U CN 206638775 U CN206638775 U CN 206638775U
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Abstract
A kind of transformer fault simulation experimental provision, including power test transformer body, multiple partial discharge fault model adjusting meanss are provided with the top of the power test transformer body, each partial discharge fault model adjusting means includes a rotatable handgrip, a partial discharge model, the partial discharge model is arranged on inside power test transformer body and with controlling the rotatable handgrip of its mode of operation to be connected, and the rotatable handgrip is located at the outside of power test transformer body.The utility model directly controls the generation, disappearance and exacerbation of partial discharge failure by outside regulating measure, all kinds of partial discharge failures of accurate simulation power transformer, avoid changing the cumbersome of fault model during fault simulation, the generation time and intensity of the convenient all kinds of failures of adjustment control in boost process simultaneously, it is accurate and efficient.
Description
Technical field
The utility model belongs to transformer technology field, is related to a kind of transformer fault simulation experimental provision.
Background technology
In power industry, transformer will not only bear the long term of rated voltage in normal course of operation, also
The various forms of tests of all kinds of varying environments such as various overvoltage, oil gas burn into high temperature low temperature are subjected to, can also be produced inside it each
The insulation fault of class multi-form, varying strength, therefore the characteristic progress fully research to power transformer interior fault defect is electricity
The basis of power equipment fault measuring system, experiment AF panel and all kinds of pattern-recognitions, in recent years, both at home and abroad for transformer
The monitoring of internal fault has carried out substantial amounts of research with inspection, while carries out a large amount of specific aim moulds for equipment fault field test
Intend, to realize the accumulation to power transformer interior fault characteristic, provided for further research Electric Power Equipment Insulation Ageing Diagnosis
Scientific basis.But also only rest on to use for main transformer fault simulation at present and move back the transformer of fortune or directly in transformer oil
Middle carry out fault simulation, its workload is big, and fault simulation process is cumbersome, and its failure strength is uncontrollable, the inspection of fault simulation
Survey means are single, most of fault types that its simulation is detected in device external, and accuracy of detection is relatively low.
At present, existing polytype failure simulation device, it is issuable for emulating actual motion inside transformer
Defect and fault type.But a little deficiency of generally existing in existing scheme.For example, existing failure simulation device is more
Consider the simulation of single source shelf depreciation defect failure；But in actual motion scene, inside transformer often occurs that multi-source is (more
Individual point of discharge and a variety of electric discharge types) shelf depreciation situation；This multi-source shelf depreciation is probably same electric discharge type
It is probably that a variety of electric discharge types occur at out of phase different windings, for this failure situation, existing failure simulation device
It often can not all carry out analog study.
Because shelf depreciation is to cause transformer equipment insulation degradation up to the main forms of arcing fault generation, mesh
Mainly to detect in transformer based on existing shelf depreciation in the detection of preceding intelligent transformer.Its main method has pulse current
Method, high-frequency method, supercritical ultrasonics technology and superfrequency method.Because transformer is with iron core, winding, insulating board, magnetic screen, oil clearance etc.
The equipment of labyrinth, therefore, the propagation of the local discharge signal of transformer are sufficiently complex.Current existing different shelf depreciations
Collection and analysis of the detecting instrument for transformer inner discharge signal still need to further further investigate.Has part mould at present
Intend device, such as utility model patent:A kind of insulation defect simulation test device for oil-filled transformer
(201420559727.9) electrode, including insulating vessel, electrode and transformer oil, is installed on its fixed pedestal, held in insulation
The transformer oil of filling covering electrode in device.This kind of experimental simulation device is only a kind of shelf depreciation simulation dress of transformer
Put, operability is not strong, does not account for transformer and labyrinth, can not carry out complete mould to partial discharge of transformer defect
Intend, and carry out detection experiment.
The content of the invention
The utility model proposes a kind of workable, accurate transformer fault simulation experimental provision of fault simulation.
The technical solution adopted in the utility model is：
A kind of transformer fault simulation experimental provision, including power test transformer body, it is characterised in that：The electric power
Multiple partial discharge fault model adjusting meanss are provided with the top of testing transformer body, each partial discharge fault model adjusting means is equal
Including a rotatable handgrip, a partial discharge model, the partial discharge model be arranged on inside power test transformer body and with control
The rotatable handgrip connection of its mode of operation, the rotatable handgrip are located at the outside of power test transformer body.This practicality
The new generation, disappearance and exacerbation that partial discharge failure is directly controlled by outside regulating measure, accurate simulation power transformer are each
Class partial discharge failure, avoid changing the cumbersome of fault model, while the conveniently adjustment control in boost process during fault simulation
The generation time and intensity of all kinds of failures, it is accurate and efficient.
Further, the partial discharge fault model adjusting means be can relative power testing transformer bodies top move up and down
Regulation partial discharge model mode of operation is connected on the top of power test transformer body.
Further, the partial discharge model is put including particle discharging model, bubble-discharge model, suspended discharge model, tip
Electric model, high-voltage tip discharging model.
Further, the power test transformer body is internally provided with iron core, coil, screen layer.
Further, the top of the power test transformer body is provided with the bushing being connected with high-tension coil.
Further, the front of the power test transformer body is provided with the iron core grounding sleeve pipe and folder being connected with iron core
The folder grounding sleeve of part connection, shielding layer grounding sleeve pipe, earthy grounding sleeve, the fuel outlet valve being connected with screen layer.
Further, the back side of the power test transformer body is provided with voltage input end, voltage measurement end, high pressure tail.
Further, the relative position of the front and back of the power test transformer body is provided with multigroup built-in special
High frequency partial discharge sensor and multigroup built-in ultrasonic partial discharge sensor.
Further, insulating barrier is provided between external the copper bar and power test transformer body of each partial discharge sensor, and
Sensor mask cover is provided with outside the power test transformer body at partial discharge sensor mounting location.Can be outer by connecting
Portion's equipment receives the signal that partial discharge sensor measures, and insulating barrier is surrounded by outside external copper bar, ensures what partial discharge sensor measured
Signal is not absorbed by power test transformer body.
Further, the side of the power test transformer body is equipped with testing transformer and reserves installing port.
The beneficial effects of the utility model：The generation of transformer partial discharge failure is directly controlled by outside regulating measure, disappeared
Lose and aggravate, all kinds of partial discharge failures of accurate simulation power transformer, avoid changing the numerous of fault model during fault simulation
It is trivial, at the same conveniently in boost process all kinds of failures of adjustment control generation time and intensity, it is accurate and efficiently.By right
The boosting of the transformer fault simulation experimental provision, using different types of partial discharge fault detect means and other conventional detections
Means detect to it, variation characteristic data of the different types of partial discharge failure of synchronous collection under different detection means, carry
The high cognition judgement to partial discharge fault signature, and provide substantial amounts of test data for apparatus insulated Ageing Diagnosis from now on.
Brief description of the drawings
Fig. 1 is main structure diagram of the present utility model.
Fig. 2 is backsight structural representation of the present utility model.
Fig. 3 is left view structural representation of the present utility model.
Fig. 4 is right side structural representation of the present utility model.
Fig. 5 is the structural representation of partial discharge fault model adjusting means of the present utility model.
Fig. 6 is the structural representation of each partial discharge model of the present utility model.
Fig. 7 is the mounting structure schematic diagram of partial discharge sensor of the present utility model.
Embodiment
The utility model is further described with reference to specific embodiment, but the utility model not limited to
In these embodiments.One skilled in the art would recognize that the utility model is covered in Claims scope
All alternatives, improvement project and the equivalents that may include.
Referring to Fig. 1-4, a kind of transformer fault simulation experimental provision, including power test transformer body, the electric power
Testing transformer body interior sets cored, coil, screen layer and other necessary parts；Bushing 2 is positioned over electric power
The top of testing transformer body 1, the high-tension coil part of power test transformer body 1 is connected by wire；Multiple partial discharges events
Hinder model adjusting means 3 (fault model containing partial discharge) freely can be adjusted up and down, be positioned over the top of power test transformer body 1
Portion, certain safe distance is kept with bushing 2；Built-in superfrequency partial discharge sensor 4 amounts to 4 groups, is respectively placed in electric power
The front and the back side of testing transformer body 1；Built-in ultrasonic partial discharge sensor 5 amounts to 4 groups, is respectively placed in power test change
The front and the back side of depressor body 1；Iron core grounding sleeve pipe 6, folder grounding sleeve 7, shielding layer grounding sleeve pipe 8 are arranged on electric power examination
Test the front of transformer body 1, and by wire respectively with the iron core in power test transformer body 1, folder, screen layer phase
Connection.The front of power test transformer body is additionally provided with earthy grounding sleeve 9, fuel outlet valve 10.Power test transformer
The back side of body is provided with voltage input end 11, voltage measurement end 12, high pressure tail 13.The side of power test transformer body is all provided with
There is testing transformer to reserve installing port 14.
Referring to Fig. 5, each partial discharge fault model adjusting means includes a rotatable handgrip 31, a partial discharge model 32, institute
Partial discharge model 32 is stated installed in the inside of power test transformer body 1 and with controlling the rotatable handgrip 31 of its mode of operation to connect
Connect, the rotatable handgrip 31 is located at the outside of power test transformer body 1.The utility model is straight by outside regulating measure
Generation, disappearance and the exacerbation of control partial discharge failure are connect, all kinds of partial discharge failures of accurate simulation power transformer, avoids fault simulation
During change the cumbersome of fault model, while the conveniently generation time of all kinds of failures of adjustment control and strong in boost process
Degree is accurate and efficient.The partial discharge model is put including particle discharging model, bubble-discharge model, suspended discharge model, tip
Electric model, high-voltage tip discharging model.The structure of each partial discharge fault model is otherwise varied, and it can caused electric discharge species
Differ, shown in the structure chart 6 of each partial discharge model, wherein Fig. 6 a are the structural representations of particle discharging model, copper rod 321
Bottom is connected with a glass tube 322；Fig. 6 b are the structural representations of bubble-discharge model, and air gap rod is connected with copper rod 321
323；Fig. 6 c are the structural representations of suspended discharge model, and insulating bar 324 is connected with copper rod 321；Fig. 6 d are point discharge moulds
The structural representation of type, cutting-edge structure is provided with the bottom of copper rod 321；Fig. 6 e are the structural representations of high-voltage tip discharging model
Figure, is made up of, and be provided at an outer portion with insulating materials 326 copper rod 321 on top and the metal tip 325 of bottom.
Referring to Fig. 7, insulating barrier is provided between external the copper bar 15 and power test transformer body 1 of each partial discharge sensor 18
16, and sensor mask cover 17 is provided with outside the power test transformer body 1 at partial discharge sensor mounting location.Can
The signal for receiving partial discharge sensor by connecting external equipment and measuring, and insulating barrier 16 is surrounded by outside external copper bar 15, guarantee office
The signal that sensor measures is put not absorbed by power test transformer body 1.
When needing transformer partial discharge fault simulation, wiring is carried out to power test transformer body 1 first, iron core is connect
Ground sleeve pipe 6, folder grounding sleeve 7, shielding layer grounding sleeve pipe 8, grounding sleeve 9 carry out reliable ground by wire, according to required
Partial discharge fault type adjusts partial discharge fault model adjusting means 3 (fault model containing partial discharge) by way of moving up and down, then
Voltage input end 11 is pressurizeed, high pressure will be produced at bushing 2.
After above step completion, it will according to the tune of partial discharge fault model adjusting means 3 (fault model containing partial discharge)
Section situation, produce required partial discharge fault-signal, including ultrahigh-frequency signal, ultrasonic signal, high-frequency signal, pulse current letter
Number and other all kinds of different types of signals.After present apparatus boosting, the detection impedance of pulse current partial discharge tester can be passed through
From acquisition pulse current signal at the end shield of bushing 2；Ultrahigh-frequency signal can be entered by built-in superfrequency partial discharge sensor 4
Row detection, is detected by built-in ultrasonic partial discharge sensor 5 to ultrasonic signal, by by external high frequency partial discharge sensor
It is respectively placed at iron core grounding sleeve pipe 6, folder grounding sleeve 7, shielding layer grounding sleeve pipe 8 and grounding sleeve 9, for detecting
The high frequency Partial discharge signal of transformer different parts.In addition can also be tried by the way that external ultrasonic partial discharge sensor is positioned over into electric power
Test outside the casing of transformer body 1 and ultrasonic partial discharge signal is detected.
The utility model accurately and efficiently realizes the generation of power transformer internal simulation failure, disappears and add
Weight；Simulation variation characteristic of the different faults under different voltages and the influence to transformer insulated performance are realized, ensures its event
Hinder the comprehensive and validity of simulation；During experiment, synchronously partial discharge failure can be entered using all kinds of powered partial discharge detection means
Row detection, contrasts different detection means and obtained different faults collection of illustrative plates is tested in device inside and outside, can establish corresponding failure
Spectrum library is detected, for partial discharge accident analysis from now on and judges that providing data supports.The utility model can be according to required voltage class
It is designed to the transformer analog experimental provision of 10kV~500kV voltage class.
Claims (10)
1. a kind of transformer fault simulation experimental provision, including power test transformer body, it is characterised in that：The electric power examination
Test at the top of transformer body and be provided with multiple partial discharge fault model adjusting meanss, each partial discharge fault model adjusting means is wrapped
A rotatable handgrip, a partial discharge model are included, the partial discharge model is arranged on inside power test transformer body and with controlling it
The rotatable handgrip connection of mode of operation, the rotatable handgrip are located at the outside of power test transformer body.
A kind of 2. transformer fault simulation experimental provision according to claim 1, it is characterised in that：The partial discharge failure mould
Type adjusting means be can relative power testing transformer bodies top move up and down regulation partial discharge model mode of operation and be connected to
On the top of power test transformer body.
A kind of 3. transformer fault simulation experimental provision according to claim 1, it is characterised in that：The partial discharge model bag
Include particle discharging model, bubble-discharge model, suspended discharge model, point discharge model, high-voltage tip discharging model.
A kind of 4. transformer fault simulation experimental provision according to claim 1, it is characterised in that：The power test becomes
Depressor body interior sets cored, coil, screen layer.
A kind of 5. transformer fault simulation experimental provision according to claim 1, it is characterised in that：The power test becomes
The top of depressor body is provided with the bushing being connected with high-tension coil.
A kind of 6. transformer fault simulation experimental provision according to claim 1, it is characterised in that：The power test becomes
The front of depressor body is provided with the iron core grounding sleeve pipe being connected with iron core, the folder grounding sleeve and screen layer that are connected with folder
Shielding layer grounding sleeve pipe, earthy grounding sleeve, the fuel outlet valve of connection.
A kind of 7. transformer fault simulation experimental provision according to claim 1, it is characterised in that：The power test becomes
The back side of depressor body is provided with voltage input end, voltage measurement end, high pressure tail.
A kind of 8. transformer fault simulation experimental provision according to one of claim 1~7, it is characterised in that：The electricity
The relative position of the front and back of power testing transformer body is provided with multigroup built-in superfrequency partial discharge sensor and multigroup
Built-in ultrasonic partial discharge sensor.
A kind of 9. transformer fault simulation experimental provision according to claim 8, it is characterised in that：Each partial discharge sensor
Insulating barrier is provided between external copper bar and power test transformer body, and in office outside the power test transformer body
Put and sensor mask cover is provided with sensor mounting location.
A kind of 10. transformer fault simulation experimental provision according to claim 9, it is characterised in that：The power test
The side of transformer body is equipped with testing transformer and reserves installing port.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720339805.8U CN206638775U (en) | 2017-04-01 | 2017-04-01 | A kind of transformer fault simulation experimental provision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720339805.8U CN206638775U (en) | 2017-04-01 | 2017-04-01 | A kind of transformer fault simulation experimental provision |
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| Publication Number | Publication Date |
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| CN206638775U true CN206638775U (en) | 2017-11-14 |
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| CN201720339805.8U Active CN206638775U (en) | 2017-04-01 | 2017-04-01 | A kind of transformer fault simulation experimental provision |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111610415A (en) * | 2020-05-25 | 2020-09-01 | 国网河北省电力有限公司电力科学研究院 | Digital transformer insulation fault simulation generator and method |
| CN112731236A (en) * | 2020-12-02 | 2021-04-30 | 河南平高电气股份有限公司 | Adjustable partial discharge generating device |
| CN112834882A (en) * | 2021-01-06 | 2021-05-25 | 国网浙江省电力有限公司电力科学研究院 | Adjusting device for converter transformer partial discharge model |
| CN113325274A (en) * | 2021-03-10 | 2021-08-31 | 浙江徕米物联网科技有限公司 | Online partial discharge monitoring equipment installation method |
| CN114089125A (en) * | 2021-10-12 | 2022-02-25 | 国网电力科学研究院武汉南瑞有限责任公司 | Transformer built-in defect simulation device and simulation method |
-
2017
- 2017-04-01 CN CN201720339805.8U patent/CN206638775U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111610415A (en) * | 2020-05-25 | 2020-09-01 | 国网河北省电力有限公司电力科学研究院 | Digital transformer insulation fault simulation generator and method |
| CN111610415B (en) * | 2020-05-25 | 2022-05-20 | 国网河北省电力有限公司电力科学研究院 | Digital transformer insulation fault simulation generator and method |
| CN112731236A (en) * | 2020-12-02 | 2021-04-30 | 河南平高电气股份有限公司 | Adjustable partial discharge generating device |
| CN112834882A (en) * | 2021-01-06 | 2021-05-25 | 国网浙江省电力有限公司电力科学研究院 | Adjusting device for converter transformer partial discharge model |
| CN113325274A (en) * | 2021-03-10 | 2021-08-31 | 浙江徕米物联网科技有限公司 | Online partial discharge monitoring equipment installation method |
| CN114089125A (en) * | 2021-10-12 | 2022-02-25 | 国网电力科学研究院武汉南瑞有限责任公司 | Transformer built-in defect simulation device and simulation method |
| CN114089125B (en) * | 2021-10-12 | 2024-05-24 | 国网电力科学研究院武汉南瑞有限责任公司 | Transformer built-in defect simulation device and simulation method |
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