CN205844468U - Dry-type air-core reactor turn-to-turn insulation performance test system - Google Patents
Dry-type air-core reactor turn-to-turn insulation performance test system Download PDFInfo
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- CN205844468U CN205844468U CN201620778744.0U CN201620778744U CN205844468U CN 205844468 U CN205844468 U CN 205844468U CN 201620778744 U CN201620778744 U CN 201620778744U CN 205844468 U CN205844468 U CN 205844468U
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- 238000009413 insulation Methods 0.000 title claims abstract description 28
- 238000011056 performance test Methods 0.000 title claims abstract description 13
- 238000012360 testing method Methods 0.000 claims abstract description 43
- 238000012544 monitoring process Methods 0.000 claims abstract description 17
- 238000006243 chemical reaction Methods 0.000 claims abstract description 16
- 238000002474 experimental method Methods 0.000 claims abstract description 14
- 238000005259 measurement Methods 0.000 claims abstract description 9
- 230000008878 coupling Effects 0.000 claims abstract description 4
- 238000010168 coupling process Methods 0.000 claims abstract description 4
- 238000005859 coupling reaction Methods 0.000 claims abstract description 4
- 239000003990 capacitor Substances 0.000 claims description 19
- 238000012795 verification Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 17
- 238000001514 detection method Methods 0.000 description 6
- 230000007547 defect Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 238000011160 research Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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Abstract
The utility model discloses a kind of dry-type air-core reactor turn-to-turn insulation performance test system, including high-tension switch cabinet, frequency conversion experiment power supply, testing transformer, reactive power compensation unit, partial discharge monitoring unit and test specimen unit, described high-tension switch cabinet accesses 380V three-phase alternating current, and described high-tension switch cabinet, frequency conversion experiment power supply, testing transformer, reactive power compensation unit, partial discharge monitoring unit, test specimen unit are sequentially connected with；Described partial discharge monitoring unit includes coupling electric capacity, measuring impedance and instrument for measuring partial discharge, and described tested article unit includes that dry-type air-core reactor and ac voltage measurement unit, described dry-type air-core reactor and ac voltage measurement unit are in parallel.This utility model can carry out induced over voltage withstand test to 35 kilovolts of dry-type air-core reactor scenes, completes the on-the-spot boost operations to reactor.
Description
Technical field
This utility model relates to dry-type air-core reactor technical field, is specifically related to a kind of dry-type air-core reactor turn-to-turn exhausted
Edge performance test system.
Background technology
Along with the development of China's electric utility, for how improving power supply quality and power supply reliability, have become as
Electric power system needs the major issue considered.Reactive power compensator plays an important role, the most several in terms of improving power supply quality
Year is developed rapidly；And be to ensure power supply reliability, it is ensured that transformator limits dress from short-circuit current rush, short circuit current
Put and be also used widely.
Dry-type air-core reactor is as the typical equipments in reactive power compensator and short-circuit current limiting device, due to it
Have loss little, noise is low, maintenance workload is little, be not susceptible to phase fault, the reactance value linearity is good, projected life is long
Etc. advantage, it is widely used in recent years in domestic and international grid equipment.The reactor that power system is taked common are parallel reactance
Device and current-limiting reactor.Shunt reactor is used for the capacitive reactive power of absorption circuit, plays the work improving Power System Reactive Power
With；Current-limiting reactor is then mainly used to limiting short-circuit current, or by limiting in electrical network with capacitor serial or parallel connection
Higher hamonic wave.
Along with dry-type air-core reactor large-scale application in electrical network, the accident caused due to the various defects of reactor
The most inevitably occur, in reactor defect statistics, have found that short trouble that turn-to-turn insulation causes is in various defects
Middle proportion is the highest, close to half.Most Reactor Faults are that turn-to-turn short circuit causes reactor catching fire, to power system
Safe and stable operation bring the biggest impact.
For the detection experimental study of dry-type air-core reactor turn-to-turn insulation, the research method of domestic scholars generally can divide
For following several: one is induced over voltage withstand test method, the method directly applies power-frequency voltage to reactor two ends, with reactor
Actual operating state closest to, can effectively examine the ability of reactor turn-to-turn insulation tolerance overvoltage, but nothing needed for the method
Merit power is very big, is difficult to the capacity requirement having assay device can meet when testing, so that the method is extremely restricted.A kind of
Being lightning impulse voltage test method, due to the limitation of induced voltage test, the method is substituted is used as examination reactor
The tolerance of turn-to-turn insulation, but the method is comparatively short for action time, and energy is relatively low, and visual examination difficulty distinguishes, and turn-to-turn is short
The electrical quantity variable quantity that pass rises is little, is also difficult to distinguish from lightning impulse waveform.
Also having one is high-frequency impulse succusion, and the research of the method occurs puncture short based on reactor in turn-to-turn insulation
Time reactor Parameters variation phenomenon, on reactor apply high frequency voltage, contrast normal reactor and fault reactance device to applying
Voltage presents different attenuation constants, thus judges the turn-to-turn insulation state of reactor, and the method is only to having occurred that turn-to-turn is exhausted
The reactor of edge defect is effective, to there is turn-to-turn insulation hidden danger and not occurring the reactor of insulation breakdown then cannot realize
Detection function.A kind of dry-type air-core reactor turn-to-turn insulation test device of Publication No. CN105445630, including input mould
The conversion of block, dry-type air-core reactor, observation circuit, MCU system, current foldback circuit, bus module, display module, signal is opened
Pass, number/change-over circuit, input operation module；Observation circuit includes electric voltage observation circuit, reactive current observation circuit, meritorious electricity
Stream observation circuit, power factor (PF) observation circuit, input module includes pressure regulator, high-voltage pulse circuit, high-frequency oscillating circuits, dry type
Air reactor input connect high-frequency oscillating circuits, outfan connect reactive current observation circuit, watt current observation circuit,
Power factor (PF) observation circuit.
Therefore, the dry-type air-core reactor turn-to-turn insulation research experiment under the conditions of difference being used, it is achieved dry type is empty
The Site Detection of core device turn-to-turn insulation, just seem ever more important.
Utility model content
In view of this, the purpose of this utility model is for the deficiencies in the prior art, it is provided that a kind of dry-type air-core reactor
Turn-to-turn insulation performance test system, it is possible to 35 kilovolts of dry-type air-core reactor scenes are carried out induced over voltage withstand test, completes scene
Boost operations to reactor.
For solving above-mentioned technical problem, technical solution adopted in the utility model is as follows:
A kind of dry-type air-core reactor turn-to-turn insulation performance test system, wherein, including high-tension switch cabinet, frequency conversion test electricity
Source, testing transformer, reactive power compensation unit, partial discharge monitoring unit and test specimen unit, described high-tension switch cabinet connects
Enter 380V three-phase alternating current, described high-tension switch cabinet, frequency conversion experiment power supply, testing transformer, reactive power compensation unit, office
Portion's electric discharge monitoring means, test specimen unit are sequentially connected with；Described partial discharge monitoring unit include couple electric capacity, measure impedance and
Instrument for measuring partial discharge, described test specimen unit includes dry-type air-core reactor and ac voltage measurement unit, and described dry type is empty
Core device and ac voltage measurement unit are in parallel.
Preferably, series current table in the high tension loop of described testing transformer.
Preferably, described reactive power compensation unit uses oil immersed type intensive compensation Capacitor banks.
Preferably, described reactive power compensation unit is composed in series by multiple Capacitor banks, and described Capacitor banks is by many
Prop up capacitor to compose in parallel.
Preferably, described testing transformer is exciting transformer.
The beneficial effects of the utility model are:
1) this utility model can carry out induced over voltage withstand test to dry-type air-core reactor scene, completes on-the-spot to reactor
The examination of turn-to-turn insulation；
2) needed for this utility model, pressure build-up test transformator rated voltage is low, reduces the manufacture difficulty of testing transformer；
3) this utility model carries partial discharge monitoring unit, can survey shelf depreciation situation in process of the test
Amount.
4) this utility model carries reactive-load compensation capacitor, and required meritorious power supply capacity is little, it is possible to achieve on-the-spot test
Requirement.
5) method of the present utility model is clear, breaches conventional dry air reactor and cannot carry out turn-to-turn insulation at the scene
Effective bottleneck, makes dry-type air-core reactor scene carry out inducting-voltage proof and is possibly realized, and puts local in process of the test simultaneously
Charge level is monitored, and has filled up the blank of domestic on-site assessment dry-type air-core reactor turn-to-turn insulation performance, effective dry type
The safe operation of air reactor.
Accompanying drawing explanation
Fig. 1 is the theory diagram of this utility model dry-type air-core reactor turn-to-turn insulation performance test system.
Fig. 2 is the electricity of this utility model dry-type air-core reactor turn-to-turn insulation performance test system partial discharge monitoring unit
Road schematic diagram.
Detailed description of the invention
Below in conjunction with the accompanying drawings utility model technical scheme is further illustrated:
Embodiment 1:
As it is shown in figure 1, this utility model includes high-tension switch cabinet 1, frequency conversion experiment power supply 2, exciting transformer 3, idle merit
Rate compensating unit 4, partial discharge monitoring unit 5 and test specimen unit 6, high-tension switch cabinet 1 accesses 380V three-phase alternating current, high
Compress switch cabinet 1, frequency conversion experiment power supply 2 is sequentially connected electrically with exciting transformer 3, and exciting transformer 3 is defeated by frequency conversion experiment power supply 2
Go out voltage U1Boosting is U2, series current table in the high tension loop of exciting transformer 3.Partial discharge monitoring unit 5 is by coupling electric capacity
Device CK, detection impedance ZMTester M composition is put in drawn game.Reactive power compensation unit 4 is by 3 identical Capacitor banks C1～C3 group
Becoming, wherein, Capacitor banks C1-C3 is formed in parallel by three capacitors, and this three group capacitors group is connected in parallel to increase
The capacity of reactive-load compensation.Test specimen unit 6 includes dry-type air-core reactor and ac voltage measurement unit, described dry-type hollow electricity
Anti-device and ac voltage measurement unit are in parallel.
Testing transformer excites resonant tank, by frequency conversion experiment power supply output frequency, the reactive power in loop is mended
Repay unit and produce parallel resonance with test specimen unit.Exciting transformer 3 excites resonant tank, is exported by frequency conversion experiment power supply 2
Frequency makes reactive power compensation unit in loop 4 and test specimen unit 6 produce parallel resonance, it is achieved reactive power complete
Compensate.Exciting transformer 3 is played the effect of protection by high-tension switch cabinet 1, prevents the excessive damage equipment of electric current.Partial discharge monitoring
Unit 5 is by coupling capacitor CK, detection impedance ZMTester M is put in drawn game, utilizes the principle of pulse current method, to whole pressurization
The local discharging level of system is monitored and examines.
The output voltage of frequency conversion experiment power supply 2 is raised to suitably by this utility model at the trial by exciting transformer 3
Magnitude of voltage, to excite whole test loop, dynamically regulates output frequency and the reactive power compensation unit 4 of frequency conversion experiment power supply 2
Capacitor group switching group number, make reactive power compensation unit and tested reactor in frequency conversion experiment power supply frequency range
(30Hz-300Hz) realize parallel resonance, thus realize the full remuneration of reactive power, now the output frequency of frequency conversion experiment power supply 2
Rate is test frequency, and 6 making alives of test specimen are resonance potential.According to parallel resonance principle, this pilot system utilizes height
Pressing reactor and produce high voltage and big electric current with compensating capacitor resonant tank, power supply only needs the portion of meritorious consumption in offer system
Point, required power supply capacity significantly reduces, and the volume and weight of experimental facilities the most significantly reduces.And pilot system introduces arteries and veins
Rush the partial discharge monitoring unit of current method, it is achieved thereby that to whole test loop, particularly test specimen 6 local discharging level
Detection and examination.
Embodiment 2:
As in figure 2 it is shown, carry out local owing to this utility model employs pulse current method in partial discharge monitoring unit 5
The monitoring of discharge capacity, it is therefore desirable to before applied voltage test starts, carries out office's high-volume (partial discharge quantity) to whole pilot system
Calibration, utilizes standard capacitor and square-wave generator, calibrates whole test loop, and wherein square-wave generator exports one end
Ground connection, the other end utilizes holding wire to export square-wave signal, and is applied to couple the head end of capacitor, as a example by 500pC, now adjusts
The output of perfect square ripple makes it be output as 500pC, should be able to read square-wave signal, according to shelf depreciation in Partial discharge detector simultaneously
The operation instruction of detector carries out square wave and calibrates.
Method of the present utility model is clear, breaches conventional dry air reactor and cannot carry out turn-to-turn insulation at the scene and have
The bottleneck of effect, makes dry-type air-core reactor scene carry out inducting-voltage proof and is possibly realized, simultaneously to shelf depreciation in process of the test
Amount level is monitored, and has filled up the blank of domestic on-site assessment dry-type air-core reactor turn-to-turn insulation performance, and effective dry type is empty
The safe operation of core device.
Finally illustrate, above example only in order to the technical solution of the utility model to be described and unrestricted, this area
Other amendment or equivalents that the technical solution of the utility model is made by those of ordinary skill, without departing from this practicality
The spirit and scope of new technique scheme, all should contain in the middle of right of the present utility model.
Claims (5)
1. a dry-type air-core reactor turn-to-turn insulation performance test system, it is characterised in that: include high-tension switch cabinet, frequency conversion examination
Electrical verification source, testing transformer, reactive power compensation unit, partial discharge monitoring unit and test specimen unit, described high-voltage switch gear
Cabinet accesses 380V three-phase alternating current, described high-tension switch cabinet, frequency conversion experiment power supply, testing transformer, reactive power compensation list
Unit, partial discharge monitoring unit, test specimen unit are sequentially connected with；Described partial discharge monitoring unit includes coupling electric capacity, measurement
Impedance and instrument for measuring partial discharge, described test specimen unit includes dry-type air-core reactor and ac voltage measurement unit, described
Dry-type air-core reactor and ac voltage measurement unit are in parallel.
2. a kind of dry-type air-core reactor turn-to-turn insulation performance test system as claimed in claim 1, it is characterised in that: described
Series current table in the high tension loop of testing transformer.
3. a kind of dry-type air-core reactor turn-to-turn insulation performance test system as claimed in claim 1, it is characterised in that: described
Reactive power compensation unit uses oil immersed type intensive compensation Capacitor banks.
4. a kind of dry-type air-core reactor turn-to-turn insulation performance test system as claimed in claim 1, it is characterised in that: described
Reactive power compensation unit is composed in series by multiple Capacitor banks, and described Capacitor banks is composed in parallel by branched capacitor.
5. a kind of dry-type air-core reactor turn-to-turn insulation performance test system as claimed in claim 1, it is characterised in that: described
Testing transformer is exciting transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620778744.0U CN205844468U (en) | 2016-07-22 | 2016-07-22 | Dry-type air-core reactor turn-to-turn insulation performance test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620778744.0U CN205844468U (en) | 2016-07-22 | 2016-07-22 | Dry-type air-core reactor turn-to-turn insulation performance test system |
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| CN205844468U true CN205844468U (en) | 2016-12-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108427068A (en) * | 2018-03-29 | 2018-08-21 | 云南电网有限责任公司电力科学研究院 | A kind of partial discharge of switchgear detection device and method |
| CN108445360A (en) * | 2018-03-29 | 2018-08-24 | 云南电网有限责任公司电力科学研究院 | A kind of partial discharge of switchgear positioning device and method |
-
2016
- 2016-07-22 CN CN201620778744.0U patent/CN205844468U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108427068A (en) * | 2018-03-29 | 2018-08-21 | 云南电网有限责任公司电力科学研究院 | A kind of partial discharge of switchgear detection device and method |
| CN108445360A (en) * | 2018-03-29 | 2018-08-24 | 云南电网有限责任公司电力科学研究院 | A kind of partial discharge of switchgear positioning device and method |
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