CN205811860U - Storage transformer short-circuit impact experiment power supply - Google Patents
Storage transformer short-circuit impact experiment power supply Download PDFInfo
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- CN205811860U CN205811860U CN201620761153.2U CN201620761153U CN205811860U CN 205811860 U CN205811860 U CN 205811860U CN 201620761153 U CN201620761153 U CN 201620761153U CN 205811860 U CN205811860 U CN 205811860U
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Abstract
This utility model relates to storage transformer short-circuit impact experiment power supply, it is included into linear contact lay device, charging transformer, frequency converter unit and testing transformer, the outfan of inlet wire catalyst connects the input of charging transformer, the outfan of charging transformer connects the input of frequency converter unit, and the outfan of frequency converter unit is through switch joint test transformator.Utilizing capacitor energy storage and Technics of Power Electronic Conversion technology, the amplitude of output voltage and phase place all can quickly regulate, and can realize constant voltage and power, and can easily realize the short-circuit impact test of transformator.Short-circuit impact test is made to be possibly realized at transformer manufacturing factory and user.
Description
Technical field
This utility model relates to a kind of storage transformer short-circuit impact experiment power supply.
Background technology
Transformer short-circuit impact test is the main method of inspection transformator Dynamic stability, is impacted by transformator external short circuit
Test, it is possible to find coil displacement, lamination move, winding and the defect such as connecting line and supporting construction deformation, be transformator system
Make department's Curve guide impeller and the effective means using department devices to check and accept.Owing to transformer short-circuit test needs experiment power supply to provide
The biggest power supply capacity, general transformer manufacturing and use unit to be difficult to provide required power supply capacity to complete short-circuit impact
Test.The domestic minority testing agency that only has uses electric set electric supply to complete transformer short-circuit impact test, generating set group
The transformer short-circuit impact test system become comprises the equipment such as motor, electromotor, impact transformator, and whole system is owing to containing
Electric rotating machine, needs the auxiliary equipments such as supporting lubrication, protection, jiggering, and the cost of system is sufficiently expensive, general transformer manufacturing
And use department is difficult to bear the highest cost, rare outfit short-circuit impact pilot system.
Summary of the invention
The purpose of this utility model is the deficiency overcoming prior art to exist, it is provided that a kind of storage transformer short-circuit impact
Experiment power supply.
The purpose of this utility model is achieved through the following technical solutions:
Storage transformer short-circuit impact experiment power supply, feature is: be included into linear contact lay device, charging transformer, converter
Unit and testing transformer, the outfan of inlet wire catalyst connects the input of charging transformer, the outfan of charging transformer
Connecting the input of frequency converter unit, the outfan of frequency converter unit is through switch joint test transformator.
Further, above-mentioned storage transformer short-circuit impact experiment power supply, wherein, described charging transformer be how around
Group booster transformer.
Further, above-mentioned storage transformer short-circuit impact experiment power supply, wherein, described frequency converter unit is by three
Group inverter overlapped in series is constituted.
Further, above-mentioned storage transformer short-circuit impact experiment power supply, wherein, described charging transformer is 50
～100kVA transformator.
The substantive distinguishing features of technical solutions of the utility model and progress are mainly reflected in:
This utility model design is unique, novel structure, utilizes capacitor energy storage and Technics of Power Electronic Conversion technology, output voltage
Amplitude and phase place all can quickly regulate, and constant voltage can be realized power, can easily realize the short-circuit impact of transformator
Test.Transformer short-circuit impact test can be realized, for transformator system within only needing the 1% of transformer short-circuit test desired volume
Make and use department carries out transformer short-circuit impact test at maker and user and provides feasible scheme.
Accompanying drawing explanation
Fig. 1: circuit theory schematic diagram of the present utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawings technical solutions of the utility model are described further:
As it is shown in figure 1, storage transformer short-circuit impact experiment power supply, it is included into linear contact lay device 1, charging transformer 2, becomes
Frequently device unit 3 and testing transformer 5, the outfan of inlet wire catalyst 1 connects the input of charging transformer 2, charging transformer 2
Outfan connect frequency converter unit 3 input, the outfan of frequency converter unit 3 is through switching 4 joint test transformators 5.Its
In, frequency converter unit 3 is made up of three groups of inverter overlapped in series.
The short-term test capacity required when carrying out short-circuit impact test due to transformator is big, the transformator of a 200kVA
Completing the capacity of experiment needed for first short circuit test is about 5000kVA, and the biggest power supply capacity is general factory and change
Depressor user is difficult to provide.But owing to test period is the shortest, only 0.5 second, the ofest short duration time, even the biggest wink
Shi Rongliang, required energy is the most little, and the transformator of such as 200kVA completes the electric energy of first short circuit test consumption and only has the most not
To 0.3 degree, by the power supply of low capacity, capacitor can be charged, fully charged after capacitor energy storage be obtained in that required
Test energy, the electric energy after energy storage is after Technics of Power Electronic Conversion device carries out SPWM conversion, needed for obtaining testing transformer
Test voltage deliver to the input of transformator, first short circuit impact test can be completed.
380V power supply powers to after inlet wire catalyst 1 charging transformer 2, and charging transformer 2 rises buckling for Multiple coil
Depressor, the voltage after boosting is supplied to frequency converter unit 3, rectified after energy-storage capacitor C is charged, be stored on capacitor C
Electric energy, convert through inverter, and carry out multiple-unit overlapped in series, output multilevel SPWM voltage is for testing transformer 5.
During test, first close inlet wire catalyst 1 and energy-storage capacitor charged, after charging complete, disconnect inlet wire catalyst 1, close a switch 4,
Adjust the drive waveforms of each inversion unit, in order to obtain the output voltage being suitable for, set phase angle and the frequency of modulated signal, i.e.
Can obtain meeting the high voltage power supply of frequency and phase requirements, persistently output 0.5 second, a transformer short-circuit impact examination can be completed
Test.Complete owing to being dependent on storage capacitor when completing short-circuit impact test, electrical network will not be produced any impact, for 200kVA
Transformator, charging transformer 2 uses 50～100kVA transformators, and ratio directly obtains the capacity of 5000kVA from mains side
Much smaller.Capacitor is used for energy storage, and the capacity of regulation Capacitor banks realizes the short-circuit impact test of different capabilities transformator.Pass through
The frequency and the waveform that adjust modulated signal can get required output waveform and voltage.Three power cell composition frequency converter units
3, according to the requirement of output voltage, it is possible to use more power unit cascade superposition realizes higher output voltage.Due to
Using Technics of Power Electronic Conversion technology, the amplitude of output voltage and phase place all can quickly regulate, and can realize constant voltage and power, can
Easily to realize the short-circuit impact test of transformator.Power supply self can regulate the short circuit moment, it is not necessary to synchro switch, it is simple to uses
Family uses.
In sum, this utility model utilizes capacitor energy storage and Technics of Power Electronic Conversion technology, it is only necessary to transformer short-circuit tries
Transformer short-circuit impact test can be realized within testing the 1% of desired volume, for transformer manufacturing and use department at maker
And carry out transformer short-circuit impact test at user and provide feasible scheme.
It is emphasized that: be the most only preferred embodiment of the present utility model, not this utility model appointed
What pro forma restriction, every according to technical spirit of the present utility model, above example is made any simple modification, etc.
With change and modification, all still fall within the range of technical solutions of the utility model.
Claims (4)
1. storage transformer short-circuit impact experiment power supply, it is characterised in that: it is included into linear contact lay device, charging transformer, frequency conversion
Device unit and testing transformer, the outfan of inlet wire catalyst connects the input of charging transformer, the output of charging transformer
End connects the input of frequency converter unit, and the outfan of frequency converter unit is through switch joint test transformator.
Storage transformer short-circuit impact experiment power supply the most according to claim 1, it is characterised in that: described charging transformation
Device is Multiple coil booster transformer.
Storage transformer short-circuit impact experiment power supply the most according to claim 1, it is characterised in that: described converter list
Unit is made up of three groups of inverter overlapped in series.
Storage transformer short-circuit impact experiment power supply the most according to claim 1, it is characterised in that: described charging transformation
Device is 50～100kVA transformators.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620761153.2U CN205811860U (en) | 2016-07-19 | 2016-07-19 | Storage transformer short-circuit impact experiment power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620761153.2U CN205811860U (en) | 2016-07-19 | 2016-07-19 | Storage transformer short-circuit impact experiment power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205811860U true CN205811860U (en) | 2016-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201620761153.2U Active CN205811860U (en) | 2016-07-19 | 2016-07-19 | Storage transformer short-circuit impact experiment power supply |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106802359A (en) * | 2017-03-22 | 2017-06-06 | 中车株洲电机有限公司 | A kind of transformer test electric supply installation |
| CN110045163A (en) * | 2019-04-23 | 2019-07-23 | 国网江苏省电力有限公司 | A kind of energy storage type short-circuit test device and energy storage type short-circuit test method |
| CN110165904A (en) * | 2019-05-07 | 2019-08-23 | 中国农业大学 | A kind of transformer short-circuit experiment power supply |
| CN111812448A (en) * | 2019-04-11 | 2020-10-23 | 苏州工业园区海沃科技有限公司 | Apparatus, system and method for testing power distribution equipment |
| CN112098750A (en) * | 2020-09-07 | 2020-12-18 | 国网新疆电力有限公司电力科学研究院 | Transformer dynamic thermal stability test device based on charging capacitor |
| CN112213600A (en) * | 2020-09-24 | 2021-01-12 | 国网福建省电力有限公司电力科学研究院 | High efficiency transformer burst short circuit test device |
-
2016
- 2016-07-19 CN CN201620761153.2U patent/CN205811860U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106802359A (en) * | 2017-03-22 | 2017-06-06 | 中车株洲电机有限公司 | A kind of transformer test electric supply installation |
| CN111812448A (en) * | 2019-04-11 | 2020-10-23 | 苏州工业园区海沃科技有限公司 | Apparatus, system and method for testing power distribution equipment |
| CN110045163A (en) * | 2019-04-23 | 2019-07-23 | 国网江苏省电力有限公司 | A kind of energy storage type short-circuit test device and energy storage type short-circuit test method |
| CN110165904A (en) * | 2019-05-07 | 2019-08-23 | 中国农业大学 | A kind of transformer short-circuit experiment power supply |
| CN112098750A (en) * | 2020-09-07 | 2020-12-18 | 国网新疆电力有限公司电力科学研究院 | Transformer dynamic thermal stability test device based on charging capacitor |
| WO2022048678A1 (en) * | 2020-09-07 | 2022-03-10 | 国网新疆电力有限公司电力科学研究院 | Transformer dynamic thermal stabilization test device based on charging capacitance |
| CN112213600A (en) * | 2020-09-24 | 2021-01-12 | 国网福建省电力有限公司电力科学研究院 | High efficiency transformer burst short circuit test device |
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