CN112213600A - High efficiency transformer burst short circuit test device - Google Patents
High efficiency transformer burst short circuit test device Download PDFInfo
- Publication number
- CN112213600A CN112213600A CN202011018693.9A CN202011018693A CN112213600A CN 112213600 A CN112213600 A CN 112213600A CN 202011018693 A CN202011018693 A CN 202011018693A CN 112213600 A CN112213600 A CN 112213600A
- Authority
- CN
- China
- Prior art keywords
- transformer
- test device
- short circuit
- circuit test
- power supply
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- 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
-
- 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
- G01R31/14—Circuits therefor, e.g. for generating test voltages, sensing circuits
-
- 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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/72—Testing of electric windings
Abstract
The invention discloses a high-efficiency transformer burst short circuit test device, which comprises: one side of the power supply is connected with a first transformer; one end of the transformer I is connected with the controller, and the other end of the transformer I is connected with the transformer II. The device is simple and flexible to operate, saves cost and is very convenient to use; the purpose of impact examination of short-circuit current bearing and oscillation voltage of the voltage transformer winding is achieved.
Description
Technical Field
The invention relates to the technical field of short circuit tests, in particular to a high-efficiency transformer sudden short circuit test device.
Background
The power transformer plays an irreplaceable role in the power system, so that the guarantee of safe and reliable and long-term stable operation of the power system has important significance on the economic construction and development of the whole country and the stability of social order. However, the transformer is an important device of the power system, and the transformer is safe, economical and reliable to operate and depends on the manufacturing quality and the operating environment and the overhaul quality. The short-time short circuit state is caused by frequent lightning strike, relay protection misoperation or failure and the like of the power grid. The transformer may be damaged by a strong impact of the short-circuit current. The transformer windings will be subjected to large, uneven axial and radial electromotive forces in the event of a short-circuit fault. If there is a weak link in the winding, deformation phenomena such as winding distortion and displacement can be generated inevitably, and sudden damage accidents are caused in serious cases. In recent years, statistics of accidents of large power transformers across the country shows that accidents caused by insufficient transformer short-circuit strength become the primary cause of transformer accidents, so that the examination of the short-circuit bearing capacity of the power transformers becomes an important problem to be solved urgently.
The method for testing the short-circuit impact resistance of the power transformer is to carry out a short-circuit impact test on the transformer, wherein the short-circuit impact test has very high requirement on the capacity of a power supply; at present, a transformer short circuit impact test is completed by using a generator set for power supply, a transformer short circuit impact test system formed by the generator set comprises a motor, a generator, an impact transformer and other equipment, and the whole system needs to be matched with auxiliary equipment such as lubrication, protection, turning and the like due to the fact that a rotating motor is contained, so that the manufacturing cost of the whole system is very high. The test power supply is obtained by using a special line power grid for power supply, and the special line is difficult to apply except for high manufacturing cost.
Disclosure of Invention
Aiming at the technical problems in the related art, the invention provides a high-efficiency transformer burst short circuit test device which can overcome the defects in the prior art.
In order to achieve the technical purpose, the technical scheme of the invention is realized as follows:
a high efficiency transformer burst short circuit test device, the device includes: one side of the power supply is connected with a first transformer; one end of the first transformer is connected with the controller, and the other end of the first transformer is connected with the second transformer.
Furthermore, the vacuum contactor of the power supply is connected with the input end of the second transformer, the output end of the second transformer is connected with the input end of the first transformer, and the output end of the first transformer is connected to the mutual inductor of the second transformer.
Further, the power supply, the first transformer and the second transformer are connected with the controller.
Further, the rated transformation ratio of the first transformer is 380V/220V, and the rated capacity is 200 kVA.
Furthermore, the rated voltage of the second transformer is at least 125V, and the rated capacity of the second transformer is 200 kVA.
The invention has the beneficial effects that: the device is simple and flexible to operate, saves cost and is very convenient to use; the purpose of impact examination of short-circuit current bearing and oscillation voltage of the voltage transformer winding is achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic circuit diagram of a high-efficiency transformer burst short-circuit test device according to an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
As shown in fig. 1, the high-efficiency transformer burst short-circuit testing apparatus according to the embodiment of the present invention includes: one side of the power supply is connected with a first transformer; one end of the first transformer is connected with the controller, and the other end of the first transformer is connected with the second transformer.
In an embodiment of the present invention, the vacuum contactor of the power supply is connected to an input terminal of the second transformer, an output terminal of the second transformer is connected to an input terminal of the first transformer, and an output terminal of the first transformer is connected to the transformer of the second transformer.
In an embodiment of the present invention, the power supply, the first transformer and the second transformer are connected to the controller.
In one embodiment of the invention, the rated transformation ratio of the first transformer is 380V/220V, and the rated capacity is 200 kVA.
In a specific embodiment of the present invention, the rated voltage of the second transformer is at least 125V, and the rated capacity is 200 kVA.
In order to facilitate understanding of the above-described aspects of the present invention, the above-described aspects of the present invention will be described in detail below.
When the device is used specifically, the principle of the high-efficiency transformer burst short circuit test device is as follows:
the power supply provided by the power supply is input into the first transformer, the output of the first transformer is regulated and measured on the controller to the second transformer, and finally the test voltage required by the test is provided by the first transformer. The controller simulates sudden short circuit of the high-voltage side of the transformer two to complete the whole test process, and records voltage and current data during the sudden short circuit.
In conclusion, by means of the technical scheme, the device is simple and flexible to operate, saves cost and is very convenient to use; the purpose of impact examination of short-circuit current bearing and oscillation voltage of the voltage transformer winding is achieved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. The utility model provides a high efficiency transformer burst short circuit test device which characterized in that includes: one side of the power supply is connected with a first transformer; one end of the first transformer is connected with the controller, and the other end of the first transformer is connected with the second transformer.
2. The high-efficiency transformer burst short-circuit test device as claimed in claim 1, wherein the vacuum contactor of the power supply is connected to the input end of the second transformer, the output end of the second transformer is connected to the input end of the first transformer, and the output end of the first transformer is connected to the mutual inductor of the second transformer.
3. The high-efficiency transformer burst short circuit test device according to claim 1, wherein the power supply, the first transformer and the second transformer are connected with the controller.
4. The high-efficiency transformer burst short circuit test device according to claim 1, wherein the rated voltage ratio of the first transformer is 380V/220V, and the rated capacity is 200 kVA.
5. The high-efficiency transformer burst short-circuit test device according to claim 1, wherein the rated voltage of the second transformer is at least 125V, and the rated capacity of the second transformer is 200 kVA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011018693.9A CN112213600A (en) | 2020-09-24 | 2020-09-24 | High efficiency transformer burst short circuit test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011018693.9A CN112213600A (en) | 2020-09-24 | 2020-09-24 | High efficiency transformer burst short circuit test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112213600A true CN112213600A (en) | 2021-01-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011018693.9A Pending CN112213600A (en) | 2020-09-24 | 2020-09-24 | High efficiency transformer burst short circuit test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112213600A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5559348A (en) * | 1978-10-30 | 1980-05-02 | Tokyo Electric Power Co Inc:The | Winding short detecting method for transformer |
| CN102096033A (en) * | 2010-11-27 | 2011-06-15 | 国网电力科学研究院 | Test device for sudden short circuit of voltage transformer |
| CN201974500U (en) * | 2010-11-27 | 2011-09-14 | 国网电力科学研究院 | Testing apparatus for burst short circuit of voltage transformer |
| CN205811860U (en) * | 2016-07-19 | 2016-12-14 | 苏州工业园区海沃科技有限公司 | Storage transformer short-circuit impact experiment power supply |
| CN206611341U (en) * | 2017-04-11 | 2017-11-03 | 华北电力科学研究院有限责任公司 | A kind of distribution transformer short-circuit test power supply |
-
2020
- 2020-09-24 CN CN202011018693.9A patent/CN112213600A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5559348A (en) * | 1978-10-30 | 1980-05-02 | Tokyo Electric Power Co Inc:The | Winding short detecting method for transformer |
| CN102096033A (en) * | 2010-11-27 | 2011-06-15 | 国网电力科学研究院 | Test device for sudden short circuit of voltage transformer |
| CN201974500U (en) * | 2010-11-27 | 2011-09-14 | 国网电力科学研究院 | Testing apparatus for burst short circuit of voltage transformer |
| CN205811860U (en) * | 2016-07-19 | 2016-12-14 | 苏州工业园区海沃科技有限公司 | Storage transformer short-circuit impact experiment power supply |
| CN206611341U (en) * | 2017-04-11 | 2017-11-03 | 华北电力科学研究院有限责任公司 | A kind of distribution transformer short-circuit test power supply |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210112 |
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| RJ01 | Rejection of invention patent application after publication |