CN108254662A - Shelf depreciation simulator - Google Patents
Shelf depreciation simulator Download PDFInfo
- Publication number
- CN108254662A CN108254662A CN201810215109.5A CN201810215109A CN108254662A CN 108254662 A CN108254662 A CN 108254662A CN 201810215109 A CN201810215109 A CN 201810215109A CN 108254662 A CN108254662 A CN 108254662A
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- Prior art keywords
- shelf depreciation
- signal
- plate electrode
- power supply
- voltage signal
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- 230000036961 partial effect Effects 0.000 claims abstract description 16
- 238000012360 testing method Methods 0.000 claims abstract description 15
- 238000004088 simulation Methods 0.000 claims abstract description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 60
- 229910052742 iron Inorganic materials 0.000 claims description 30
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 11
- 239000004411 aluminium Substances 0.000 claims description 9
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 6
- 239000000523 sample Substances 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 230000003321 amplification Effects 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 5
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 5
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 4
- 230000010355 oscillation Effects 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 102100025142 Beta-microseminoprotein Human genes 0.000 description 2
- 101000576812 Homo sapiens Beta-microseminoprotein Proteins 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
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- 230000008859 change Effects 0.000 description 1
- 210000000080 chela (arthropods) Anatomy 0.000 description 1
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- 238000001914 filtration Methods 0.000 description 1
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- 238000012544 monitoring process Methods 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
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- 230000002829 reductive effect Effects 0.000 description 1
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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
Abstract
The present invention provides a kind of shelf depreciation simulator, including:Power supply:Voltage signal needed for generating;Shelf depreciation physical model:The power supply is electrically connected to obtain the voltage signal, physical simulation partial discharge phenomenon;Local discharge signal output section:It receives the shelf depreciation physical model and the detectable signal generated during partial discharge phenomenon occurs.The present invention is small, easy to carry, multiple types shelf depreciation scene that can be under real simulation multiple power sources voltage form, and simple and practicable, and low to External Test Equipment condition depended degree, operability is strong.
Description
Technical field
The present invention relates to technical field of electric power, and in particular, to a kind of shelf depreciation simulator.
Background technology
Shelf depreciation is to cause the major reason of Electric Power Equipment Insulation failure, furthers investigate partial discharge phenomenon, probes into office
Portion's discharge detection method, it is to ensure power equipment safety, reliable, stable operation to implement shelf depreciation live detection and on-line monitoring
Important means.Because the practical shelf depreciation occurred has randomness and uncontrollability, shelf depreciation mould in power equipment
Intending device becomes a kind of important tool of shelf depreciation research, particularly experimental study.
The simulation of shelf depreciation is tried in laboratory using all kinds of true type shelf depreciations of high-potting system cooperation at present
The emulation that model carries out electric discharge collection of illustrative plates is tested, it is irremovable there are bulky, it can only be tried in specific environments such as high pressure halls
It tests, the problems such as testing equipment builds difficulty, and the test period is long, and experiment power supply is the single form such as power frequency or DC voltage.
In addition one kind is then the form of similar static gun, can generate instantaneous high pressure pulse, but be unable to simulating realistic
The shelf depreciation collection of illustrative plates synchronous with the high voltage power supply being applied on test product.
Also one kind is then the Digital Simulation shelf depreciation collection of illustrative plates sequence by way of programming, then to the arteries and veins of Digital Simulation
Row enhanced processing is rushed in, often there are one on time-frequency characteristic with practical partial discharge pulse for the partial discharge pulse of this kind of emulation
Fixed gap can not react true partial discharge pulse's characteristic, be typically used as the calibration of local discharge signal completely.
Invention content
For the defects in the prior art, the object of the present invention is to provide a kind of shelf depreciation simulators.
According to a kind of Portable PD On-Line simulator provided by the invention, including:
Power supply:Voltage signal needed for generating;
Shelf depreciation physical model:The power supply is electrically connected to obtain the voltage signal, physical simulation shelf depreciation
Phenomenon;
Local discharge signal output section:Receive that the shelf depreciation physical model occurs to generate during partial discharge phenomenon can
Detect signal.
Preferably, the power supply includes:
Waveform generator:Generate the voltage signal;
Power amplifier:The waveform generator is connected, receive the voltage-type and amplifies the power of the voltage signal;
High-tension transformer:The voltage signal by amplification is received, and promotes the signal amplitude of the voltage signal by amplification,
And it exports to the shelf depreciation physical model.
Preferably, the voltage signal includes:Power frequency component, oscillation wave signal, square-wave signal or triangular signal.
Preferably, the shelf depreciation physical model includes creeping discharge model, bubble-discharge model and corona discharge
Model.
Preferably, the shelf depreciation physical model further includes the protective resistance of series connection.
Preferably, the corona discharge model includes iron probe and copper rivet, the iron probe connects the power supply, institute
State copper rivet ground connection, potential 0.
Preferably, the creeping discharge model includes iron screw, aluminium plate electrode and is arranged on the iron screw and institute
State the acrylic board between aluminium plate electrode, power supply described in the iron screw connection, the aluminium plate electrode ground connection, potential 0.
Preferably, the bubble-discharge model includes small iron plate electrode, big iron plate electrode and is set to described small
Poly (methyl methacrylate) plate between iron plate electrode and the big iron plate electrode, the poly (methyl methacrylate) plate centre position are stayed there are one filling out
The circular aperture of air is filled, the small iron plate electrode connects the power supply, the big iron plate electrode ground connection, potential 0.
Preferably, the local discharge signal output section includes:Detect serial interfaces, the detection high-frequency pulse current of impedance
Pincerlike or non-open-type current detecting cable port and electromagnetic wave signal, the test position of ultrasonic signal.
Compared with prior art, the present invention has following advantageous effect:
Shelf depreciation simulator provided by the invention is small, easy to carry, can real simulation multiple power sources voltage shape
Multiple types shelf depreciation scene under formula, and simple and practicable, operability low to External Test Equipment condition depended degree
By force.
Description of the drawings
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon:
Fig. 1 is the structural diagram of the present invention;
Fig. 2 is the schematic diagram of power supply of the present invention;
Fig. 3 is the schematic diagram of corona discharge model;
Fig. 4 is the schematic diagram of creeping discharge model;
Fig. 5 is the schematic diagram of bubble-discharge model;
Fig. 6 is corona discharge wave sequence figure;
Fig. 7 is PRPD collection of illustrative plates;
Fig. 8 is PRPS collection of illustrative plates;
Fig. 9 is flame gray-scale map.
Specific embodiment
With reference to specific embodiment, the present invention is described in detail.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill to this field
For personnel, without departing from the inventive concept of the premise, several changes and improvements can also be made.These belong to the present invention
Protection domain.
As shown in Figure 1, a kind of Portable PD On-Line simulator provided by the invention, including:Power supply 1, shelf depreciation
Physical model 2 and the part of local discharge signal output section 3 three.
Power supply 1 is applied to the required various forms of high voltage signals of shelf depreciation physical model for generating.
Shelf depreciation physical model 2 is electrically connected power supply 1 to obtain the voltage signal generated, and truly physical simulation is various
The partial discharge phenomenon of type, shelf depreciation physical model 2 as test product, are connected to 1 both ends of power supply in the present invention, apply
With high voltage.
What local discharge signal output section 3 received that local discharge physics model 2 occurs to generate during partial discharge phenomenon examines
Signal is surveyed, output preserves to treat further to analyze and process.
As shown in Fig. 2, power supply 1 includes:Waveform generator 101, power amplifier 102 and high-tension transformer 103.
For generating the voltage signal being applied on shelf depreciation physical model 2, voltage signal can be compiled waveform generator 101
Journey is set, and signal magnitude is adjusted, and can be power frequency component, oscillation wave signal, square-wave signal, triangular signal etc., and waveform is sent out
The voltage signal that raw device 101 exports is connected to power amplifier 102.
Power amplifier 102 is used to receive voltage signal caused by waveform amplification generator 101 and amplify its power, with
When meeting voltage signal and being applied on shelf depreciation physical model 2, sufficiently large pulse current of PD, power can be generated
Amplifier 102 does not adjust the voltage of voltage signal, mainly improves the carrying load ability of voltage signal, while its maximum output
Power also functions to protective effect, and the voltage signal that power amplifier 102 exports is connected to high-tension transformer 103.
High-tension transformer 103 is used to receive the voltage signal of the output of power amplifier 102, and waveform generator 101 is sent out
Raw voltage signal magnitude be increased to enough generate shelf depreciation high-voltage state, high-tension transformer 103 as power supply 1 most
Output section afterwards, the voltage signal generated are connected to shelf depreciation physical model 2.
Shelf depreciation physical model 2 includes corona discharge model, creeping discharge model and bubble-discharge model,
Concrete type can carry out simulation setting according to the form of different power equipment shelf depreciations, set according to specific needs
Count carry out simulation test customized, the model of simulation test is true model in scaled down version physically, to be reduced to office
Portion discharge physics model generates the voltage applied required for shelf depreciation, so as to opposite voltage than it is relatively low in the case of truly
The various types of partial discharge phenomenons of physical simulation;Shelf depreciation physical model 2 includes the protective resistance of series connection, is generated with limiting
The safety of maximum current during shelf depreciation, protection power source 1 and user.
Local discharge signal output section 3, the serial interfaces including common detection impedance, the pincer for detecting high-frequency pulse current
Or the test positions such as non-open-type current detecting cable port and electromagnetic wave signal, ultrasonic signal.
In the examples below, customized using FPA as signal amplifier and voluntarily 1:1000 former secondary coil turn ratios
Transformer is illustrated as high-tension transformer.
Waveform generator:So that output voltage is positive and negative 5V in this example by adjusting resistance ratio, discharge waveform signal can
Square wave, triangular wave and sine wave are selected, separately there is output signal frequency regulatory function, to realize that frequency, amplitude, waveform are all adjustable
Signal output, herein frequency be 50H.
Power amplifier:FPA1000 is chosen as power amplifier, carries output overcurrent protection, internal temperature is protected extremely
It protects, output power is 20W in this example.Its specific performance parameter is as follows:(1) input characteristics:Full power bandwidth 100KHz, input resistance
Anti- 10k Ω (2) output characteristics:Maximum output current 2A, maximum output voltage 50V, peak power output 30W.
High-tension transformer:The generation of shelf depreciation needs higher voltage class, so with high-tension transformer by power
Amplified waveform signal boosts, and 10V is boosted to 10kV, to meet the voltage requirements that shelf depreciation occurs.It considers
The design volume lower weight of this equipment is lighter, therefore selects a single-phase two-winding transformer customized with meet demand.Its performance
Parameter is as follows:(1) former secondary coil turn ratio:1/1000;(2) frequency characteristic:Working frequency 50Hz, working frequency section are low frequency
Section;(3) moisture-proof mode:Epoxy sealing;(4) appearance and size:125mm*96mm*75m.
Space electric field distribution and electrode shape when type and generation partial discharge that shelf depreciation occurs is in close relations.Want
Simulate required shelf depreciation type, it is necessary to build rational partial discharge model.Corona discharge is designed in this example, along face
Electric discharge, the partial discharge model of bubble-discharge.
(1) corona discharge model
The geometry emulation of the corona discharge model of this example design such as Fig. 3, left end is iron probe 202, and right end is copper riveting
Nail 203, surrounding fill air, the made insulation crust 201 of surrounding acrylic, and iron probe 202 connects frequency as 50Hz, amplitude 7kV
Power supply 1, right end rivet ground connection, potential zero.
(2) creeping discharge model
With reference to figure 4, creeping discharge model left end is the iron screw 212 of a diameter of 3mm, and one piece of thickness of sandwich is 5mm
Acrylic board 214;Right end is aluminium plate electrode 213, and surrounding is the insulation crust 211 of acrylic material.Iron screw 212 connects frequency
The power supply 1 that rate is 50Hz, amplitude is 7.5KV, 213 ground potential of aluminium plate electrode is zero.Contact surface does fillet chamfered.
(3) bubble-discharge model
Such as design drawing 5, the bubble-discharge model left side is one small iron plate electrode 222, and the right is one big iron tablet electricity
Pole 223;Centre is one piece of poly (methyl methacrylate) plate 224, and the centre position of poly (methyl methacrylate) plate 224 stays that there are one the diameters of filling air
The circular aperture 225 of 2mm, surrounding are the insulation crust 221 of acrylic material.Small iron plate electrode 222 connects amplitude as 5kV, frequency
The power supply 1 of rate 50Hz, big 223 ground potential of iron plate electrode on the right is zero.Chamfered is done to contact surface.
Power supply 1, shelf depreciation physical model 2 and the part of local discharge signal output section 3 three are integrated in
In Pelican1500 safety boxs, model safety box external dimensions (the long * wide * high) 47*35.7*17.6cm, inside dimension (long *
Wide * high) 42.5*28.4*15.5cm, case lid depth 4.6cm, cabinet depth 10.9cm.In safety box with three width be 2cm,
Thickness is that the bending aluminum strip of 3mm builds a frame like structure, load-bearing and fixation as entire simulation shelf depreciation equipment platform
Fulcrum, the epoxy resin board of the bottom 2mm thickness of aluminium frame is as dielectric substrate, after epoxy resin board is screwed in punching
On aluminum strip, in this, as the fixed support body system of each section component.
The 50Hz alternating voltages that waveform generator adds up to 7kV outside corona discharge model are adjusted, are put down by simulating partial discharge
Platform obtains 1000 discharge pulse data, and filtering process obtains corona discharge wave sequence shown in Fig. 6, and PRPD can be obtained by being further processed
Collection of illustrative plates, PRPS collection of illustrative plates and flame gray-scale map are as shown in Figure 7 to 9.Corona discharge occurs over just negative the half of test voltage first
At all peak values, and discharging time point is symmetrical on peak point both sides.Only when test voltage is excessively high, second group of tool is just had
The electric discharge for having similar distribution characteristics is appeared near test voltage positive half cycle peak value.The corona discharge characteristic pattern for comparing this example can be with
Find out, distribution characteristics is closed preferably with above-mentioned typical corona discharge character symbol.In corona discharge PRPD figures and flame gray-scale map,
The generation moment of most point of discharges is at the both sides of 270 ° of phases, and distribution is more uniform, and amplitude is also not much different.This
Illustrate, corona discharge model can accurately simulate the generation of corona discharge, and adjoint interference is less and discharge characteristic is bright
It is aobvious.
In the description of the present application, it is to be understood that term " on ", " under ", "front", "rear", "left", "right", " perpendicular
Directly ", the orientation of the instructions such as " level ", " top ", " bottom ", " interior ", " outer " or position relationship are based on orientation shown in the drawings or position
Relationship is put, be for only for ease of description the application and simplifies description rather than instruction or implies that signified device or element are necessary
With specific orientation, with specific azimuth configuration and operation, therefore it is not intended that limitation to the application.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make a variety of changes or change within the scope of the claims, this not shadow
Ring the substantive content of the present invention.In the absence of conflict, the feature in embodiments herein and embodiment can arbitrary phase
Mutually combination.
Claims (9)
1. a kind of shelf depreciation simulator, which is characterized in that including:
Power supply:Voltage signal needed for generating;
Shelf depreciation physical model:The power supply is electrically connected to obtain the voltage signal, physical simulation partial discharge phenomenon;
Local discharge signal output section:Receive the shelf depreciation physical model occur to generate during partial discharge phenomenon it is detectable
Signal.
2. shelf depreciation simulator according to claim 1, which is characterized in that the power supply includes:
Waveform generator:Generate the voltage signal;
Power amplifier:The waveform generator is connected, receive the voltage-type and amplifies the power of the voltage signal;
High-tension transformer:The voltage signal by amplification is received, and promotes the signal amplitude of the voltage signal by amplification, and defeated
Go out to the shelf depreciation physical model.
3. shelf depreciation simulator according to claim 2, which is characterized in that the voltage signal includes:Power frequency is believed
Number, oscillation wave signal, square-wave signal or triangular signal.
4. shelf depreciation simulator according to claim 1, which is characterized in that the shelf depreciation physical model includes
Creeping discharge model, bubble-discharge model and corona discharge model.
5. shelf depreciation simulator according to claim 4, which is characterized in that the shelf depreciation physical model also wraps
Include the protective resistance of series connection.
6. shelf depreciation simulator according to claim 4, which is characterized in that the corona discharge model is visited including iron
Needle and copper rivet, the iron probe connect the power supply, the copper rivet ground connection, potential 0.
7. shelf depreciation simulator according to claim 4, which is characterized in that the creeping discharge model includes iron spiral shell
Silk, aluminium plate electrode and the acrylic board being arranged between the iron screw and the aluminium plate electrode, the iron screw connect
Connect the power supply, the aluminium plate electrode ground connection, potential 0.
8. shelf depreciation simulator according to claim 4, which is characterized in that the bubble-discharge model includes small iron
It plate electrode, big iron plate electrode and is set to organic between the small iron plate electrode and the big iron plate electrode
Glass plate, the poly (methyl methacrylate) plate centre position are stayed there are one the circular aperture of filling air, and the small iron plate electrode connects
The power supply, the big iron plate electrode ground connection, potential 0.
9. shelf depreciation simulator according to claim 1, which is characterized in that the local discharge signal output section packet
It includes:Detect impedance serial interfaces, detect high-frequency pulse current pincerlike or non-open-type current detecting cable port and
The test position of electromagnetic wave signal, ultrasonic signal.
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CN201810215109.5A CN108254662A (en) | 2018-03-15 | 2018-03-15 | Shelf depreciation simulator |
Applications Claiming Priority (1)
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CN201810215109.5A CN108254662A (en) | 2018-03-15 | 2018-03-15 | Shelf depreciation simulator |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108983054A (en) * | 2018-08-06 | 2018-12-11 | 国网上海市电力公司 | A kind of regulating transformer partial discharge simulator |
CN110542842A (en) * | 2019-09-29 | 2019-12-06 | 广东电网有限责任公司 | 10kV switch cabinet partial discharge simulation device and method |
CN110675712A (en) * | 2019-08-27 | 2020-01-10 | 西安电子科技大学 | Power cable oscillatory wave partial discharge detection practical training system |
CN111610414A (en) * | 2020-05-19 | 2020-09-01 | 保定天威新域科技发展有限公司 | Combined type discharging generation device for simulating multiple kinds of discharging in transformer |
CN111722169A (en) * | 2020-06-10 | 2020-09-29 | 深圳供电局有限公司 | Anti-interference performance detection device and method of high-frequency partial discharge detector |
CN114002982A (en) * | 2021-10-29 | 2022-02-01 | 广东电网有限责任公司 | Multi-pulse oscillation wave generating device and method |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN108983054A (en) * | 2018-08-06 | 2018-12-11 | 国网上海市电力公司 | A kind of regulating transformer partial discharge simulator |
CN110675712A (en) * | 2019-08-27 | 2020-01-10 | 西安电子科技大学 | Power cable oscillatory wave partial discharge detection practical training system |
CN110675712B (en) * | 2019-08-27 | 2021-06-01 | 西安电子科技大学 | Power cable oscillatory wave partial discharge detection practical training system |
CN110542842A (en) * | 2019-09-29 | 2019-12-06 | 广东电网有限责任公司 | 10kV switch cabinet partial discharge simulation device and method |
CN111610414A (en) * | 2020-05-19 | 2020-09-01 | 保定天威新域科技发展有限公司 | Combined type discharging generation device for simulating multiple kinds of discharging in transformer |
CN111722169A (en) * | 2020-06-10 | 2020-09-29 | 深圳供电局有限公司 | Anti-interference performance detection device and method of high-frequency partial discharge detector |
CN114002982A (en) * | 2021-10-29 | 2022-02-01 | 广东电网有限责任公司 | Multi-pulse oscillation wave generating device and method |
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