CN205959712U - System for to unloaded demagnetization simultaneously of many transformers - Google Patents
System for to unloaded demagnetization simultaneously of many transformers Download PDFInfo
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- CN205959712U CN205959712U CN201621037279.1U CN201621037279U CN205959712U CN 205959712 U CN205959712 U CN 205959712U CN 201621037279 U CN201621037279 U CN 201621037279U CN 205959712 U CN205959712 U CN 205959712U
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- generating set
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Abstract
The utility model provides a system for to unloaded demagnetization simultaneously of many transformers, includes generating set, two at least shunt transformer that low pressure rated voltage is the same, connects the intermediate transformer between generating set and shunt transformer to and connect in the measuring instrument of transformer outgoing line end, intermediate transformer's income line terminal is connected in generating set's three -phase wiring end, and one in the leading -out terminal is connected in shunt transformer's income line terminal, a looks short circuit, a looks ground connection, income line terminal one end after the transformer is parallelly connected is connected and is connected in the earthing terminal in intermediate transformer's leading -out terminal, one end, and the leading -out terminal of transformer is connected in the measuring instrument. The utility model provides a system for to unloaded demagnetization simultaneously of many transformers has realized simultaneously the feasibility of going on demagnetizing to many high voltage large capacity transformers, and the proportion of experimental shared time of transformer no -load can reduce, has reduced manufacturing cost.
Description
Technical field
The utility model is related to transformer routine test technical field and in particular to multiple stage same model, isostructural height
Voltage bulk transformer carries out the system of unloaded demagnetization simultaneously.
Background technology
Open circuit loss and no-load current measurement are the routine tests of transformer, generally apply rated frequency, volume from low-pressure side
Determine the sine wave of voltage, high pressure (or other) winding open circuit, neutral ground is it is therefore an objective to whether there is on inspection transformer magnetic circuit
Defect.When transformer noload losses and no-load current measurement, after straight resistance test, contain remanent magnetism in transformer core, measurement
Need before loss transformer is demagnetized.When testing for 500kV transformer noload losses and no-load current, transformer demagnetizes
Required time about 40min about.Increasing with high voltage large capcity transformer, the time shared by No-load Test of Transformer
Proportion can be bigger, therefore carry out and no-load test carried out to multiple stage same model, isostructural transformers connected in parallel, eliminate iron core and remain
Magnetic, shortens test period and has great importance.
Content of the invention
For the problems referred to above, the utility model provides a kind of system to the unloaded demagnetization simultaneously of multiple stage transformer.
For solving the above problems, the technical scheme that the utility model is taken is：It is a kind of that to multiple stage transformer, zero load is moved back simultaneously
The system of magnetic, including generating set, at least two low-voltage rated voltage identical shunt transformers, is connected to generating set and simultaneously
Intermediate transformer between connection transformer, and the measuring instrumentss being connected to inducer for line outlet end of transformer；The entering of described intermediate transformer
Line end is connected to the three-phase terminal of generating set, and in leading-out terminal is connected to the lead-in wire terminal of shunt transformer, mutually short
Connect, one is mutually grounded；Lead-in wire terminal one end after described same model, isostructural transformers connected in parallel is connected to the outlet of intermediate transformer
End, one end are connected to earth terminal, and the leading-out terminal of transformer is connected to measuring instrumentss, and described measuring instrumentss include power analysis test
Instrument, voltage transformer summation current transformer.
The utility model provides a kind of system to the unloaded demagnetization simultaneously of multiple stage transformer it is achieved that simultaneously high to multiple stage
The feasibility that voltage bulk transformer is demagnetized, shared by No-load Test of Transformer, the proportion of time can reduce, and reduces life
Produce cost.
Brief description
Fig. 1 is test principle figure of the present utility model.
Wherein, 1, generating set, 2, intermediate transformer, 3, transformer I, 4, transformer II.
Specific embodiment
As shown in figure 1, a kind of system to the unloaded demagnetization simultaneously of multiple stage transformer, including 15000kVA generating set 1, two
Platform low-voltage rated voltage identical shunt transformer I 3 and transformer II 4, it is connected between generating set 1 and shunt transformer
20000kVA intermediate transformer 2, and it is connected to the measuring instrumentss of inducer for line outlet end of transformer；The lead-in wire terminal of described intermediate transformer 2
It is connected to the three-phase terminal of generating set 1, and low-pressure side ab end connects, in leading-out terminal is connected to shunt transformer
Lead-in wire terminal, a phase short circuit, one mutually it is grounded；Described same model, with structure transformer parallel connection after lead-in wire terminal one end be connected to centre
The leading-out terminal of transformer 2, one end are connected to earth terminal, and the leading-out terminal of transformer is connected to measuring instrumentss, described measuring instrumentss bag
Include DS-2001 type power analysis tester, voltage transformer summation current transformer.
Claims (3)
1. a kind of system to the unloaded demagnetization simultaneously of multiple stage transformer it is characterised in that：Including generating set (1), at least two
Low-voltage rated voltage identical shunt transformer, it is connected to intermediate transformer and shunt transformer between for the generating set (1)
, and be connected to the measuring instrumentss of inducer for line outlet end of transformer (2)；The lead-in wire terminal of described intermediate transformer (2) is connected to generating set
(1) three-phase terminal, in leading-out terminal is connected to the lead-in wire terminal of shunt transformer, a phase short circuit, one is mutually grounded；Described
Lead-in wire terminal one end after transformers connected in parallel is connected to the leading-out terminal of intermediate transformer (2), one end is connected to earth terminal, transformer
Leading-out terminal is connected to measuring instrumentss.
2. a kind of system to the unloaded demagnetization simultaneously of multiple stage transformer according to claim 1 it is characterised in that：Described simultaneously
Connection transformer is same model, same to structure.
3. a kind of system to the unloaded demagnetization simultaneously of multiple stage transformer according to claim 1 it is characterised in that：Described survey
Amount instrument includes power analysis tester, voltage transformer summation current transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621037279.1U CN205959712U (en) | 2016-09-05 | 2016-09-05 | System for to unloaded demagnetization simultaneously of many transformers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621037279.1U CN205959712U (en) | 2016-09-05 | 2016-09-05 | System for to unloaded demagnetization simultaneously of many transformers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205959712U true CN205959712U (en) | 2017-02-15 |
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ID=57979239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621037279.1U Active CN205959712U (en) | 2016-09-05 | 2016-09-05 | System for to unloaded demagnetization simultaneously of many transformers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205959712U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106252024A (en) * | 2016-09-05 | 2016-12-21 | 山东电力设备有限公司 | A kind of system of demagnetization the most unloaded to multiple stage transformator |
-
2016
- 2016-09-05 CN CN201621037279.1U patent/CN205959712U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106252024A (en) * | 2016-09-05 | 2016-12-21 | 山东电力设备有限公司 | A kind of system of demagnetization the most unloaded to multiple stage transformator |
| CN106252024B (en) * | 2016-09-05 | 2018-08-07 | 山东电力设备有限公司 | A kind of system to the unloaded demagnetization simultaneously of more transformers |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |