CN201974500U - Testing apparatus for burst short circuit of voltage transformer - Google Patents
Testing apparatus for burst short circuit of voltage transformer Download PDFInfo
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- CN201974500U CN201974500U CN2010206295916U CN201020629591U CN201974500U CN 201974500 U CN201974500 U CN 201974500U CN 2010206295916 U CN2010206295916 U CN 2010206295916U CN 201020629591 U CN201020629591 U CN 201020629591U CN 201974500 U CN201974500 U CN 201974500U
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- transformer
- short circuit
- pressure regulator
- voltage transformer
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Abstract
The utility model provides a testing apparatus for a burst short circuit of a voltage transformer, which is characterized in that the testing apparatus consists of a power supply control cabinet, a voltage regulator, a test transformer and an operation platform; the power supply control cabinet is used for providing a power supply for the whole testing apparatus; the voltage regulator is used for regulating a voltage required by the test transformer; and the operation platform is used for controlling and measuring an output of the voltage regulator, transmitting the output to the test transformer and simulating the burst short circuit at the side of a high voltage of a sample voltage transformer so as to realize of an experiment of testing the burst short circuit of the voltage transformer. The testing apparatus is used for carrying out impact testing on a short circuit current and an oscillating voltage which are borne by a winding of the voltage transformer by simulating the burst short circuit of the voltage transformer, boosting from the low-voltage side of the transformer and carrying out short circuit at the high-voltage side. The apparatus adopts the modular design, is simple and flexible to operate and is very convenient to use.
Description
Technical field
The utility model relates to a kind of voltage transformer (VT) sudden short circuit test unit, belongs to voltage transformer (VT) short-circuit test field.
Background technology
Voltage transformer (VT) sudden short circuit test is be short-circuited when Operation of Electric Systems the ability to bear test under the malfunction of the tested voltage transformer (VT) of examination, GB1207-2006 " voltage transformer (VT) " has made this and having explicitly called for, the plurality of devices that can now domesticly carry out the voltage transformer (VT) short-circuit test and all be to adopt makes up to be tested, the proving installation that does not have a kind of special use, test job are very inconvenient.
In view of this, be necessary to provide a kind of voltage transformer (VT) sudden short circuit test unit of special use, to satisfy the commercial Application needs.
Summary of the invention
The purpose of this utility model is: in order to solve existing voltage transformer (VT) sudden short circuit test all is that the plurality of devices that adopts makes up and tests, the proving installation that does not have a kind of special use, test job is very inconvenient, thereby provide a kind of voltage transformer (VT) sudden short circuit test unit of special use, device adopts modular design, simple to operate, flexible, easy to use.
The technical solution of the utility model is: a kind of voltage transformer (VT) sudden short circuit test unit, it is characterized in that, this test unit is by electrical power control cabinet, pressure regulator, testing transformer and operator's console four parts are formed, the vacuum contactor of electrical power control cabinet links to each other with the input end of pressure regulator, the output terminal of pressure regulator links to each other with the input end of testing transformer, the output terminal of testing transformer is connected to the test product voltage transformer (VT), electrical power control cabinet, pressure regulator all links to each other with operator's console with testing transformer, electrical power control cabinet provides power supply for the whole test device, pressure regulator is regulated the required voltage of testing transformer, the testing transformer of exporting to of pressure regulator is controlled and measured to operator's console, thus and simulation test product voltage transformer (VT) high-pressure side sudden short circuit realization trial voltage mutual inductor sudden short circuit test.
Aforesaid voltage transformer (VT) sudden short circuit test unit is characterized in that the specified transformation ratio of described testing transformer is 400V/125V, and rated capacity is 100kVA.
Aforesaid voltage transformer (VT) sudden short circuit test unit is characterized in that, the rated voltage of described pressure regulator is that rated capacity is 100kVA greater than 0 to 380V.
The beneficial effects of the utility model are: this test unit aanalogvoltage mutual inductor sudden short circuit, pressurize from the mutual inductor low-pressure side, the high-pressure side short circuit, to reach the voltage transformer (VT) winding is born short-circuit current, the impact examination of concussion voltage, device adopts modular design, and is simple to operate, flexible, very easy to use.
Description of drawings
Fig. 1 is the circuit theory synoptic diagram of the voltage transformer (VT) sudden short circuit test unit that provides of the utility model embodiment.
Fig. 2 is the line synoptic diagram of voltage transformer (VT) sudden short circuit test unit of the present utility model.
Fig. 3 is the operator's console panel synoptic diagram of voltage transformer (VT) sudden short circuit test unit of the present utility model.
Embodiment
Below in conjunction with drawings and Examples the utility model voltage transformer (VT) sudden short circuit test unit is described in further detail.
The utility model embodiment provides a kind of voltage transformer (VT) sudden short circuit test unit, and this test unit is made up of electrical power control cabinet, pressure regulator, testing transformer and operator's console four parts, as shown in Figure 1.Wherein electrical power control cabinet provides power supply for whole test system, pressure regulator is used for regulating the required voltage of testing transformer, testing transformer obtains testing required 100V trial voltage, and operator's console is the core component of proving installation, and all tests and control are all finished on operator's console.
As shown in Figure 2, the vacuum contactor of electrical power control cabinet links to each other with the input end of pressure regulator, the output terminal of pressure regulator links to each other with the input end of testing transformer, the output terminal of testing transformer is connected to the test product voltage transformer (VT), electrical power control cabinet, pressure regulator all links to each other with operator's console with testing transformer, electrical power control cabinet provides power supply for the whole test device, pressure regulator is regulated the required voltage of testing transformer, the testing transformer of exporting to of pressure regulator is controlled and measured to operator's console, thus and simulation test product voltage transformer (VT) high-pressure side sudden short circuit realization trial voltage mutual inductor sudden short circuit test.
This test unit aanalogvoltage mutual inductor sudden short circuit is from the pressurization of mutual inductor low-pressure side, high-pressure side short circuit, to reach the voltage transformer (VT) winding is born short-circuit current, the impact examination of concussion voltage, device adopts modular design, simple to operate, flexible, very easy to use.
Concrete principle of work is: the power supply that is provided by electrical power control cabinet is input to pressure regulator, in the operator's console adjusted and measure the testing transformer of exporting to of pressure regulator, offers the required 100V trial voltage of test by testing transformer at last.Operator's console simulation test product voltage transformer (VT) high-pressure side sudden short circuit is finished entire test, and the electric current and voltage data during the record sudden short circuit.
The concrete operations step is:
The first step: on electrical power control cabinet, " open ", be whole device power supply by the general supply button;
Second step: on operator's console, press power knob again, for the supervisory instrument and the control section of operator's console provides power supply;
The 3rd step: by behind the start button by boosting and the step-down button is regulated the no-load voltage U01=100V that pressure regulator shows the trial voltage table;
The 4th step: by the short circuit button, behind the short-circuit voltage U21 that measures this moment on trial voltage gauge outfit or the oscillograph, the no-load voltage when calculating short-circuit voltage and be 100V according to formula U02=U01*100/U21;
The 5th step: be the numerical value of U02 by the no-load voltage that boosts and step-down button adjusting pressure regulator shows the trial voltage table again;
The 6th step:, on gauge outfit or oscillograph, measure short-circuit voltage U22 and the short-circuit current I22 of this moment by the short circuit button;
The 7th step: U22 and I22 when on oscillograph, storing short circuit for the second time;
The 8th step: in off-test or test, can stop all operations by the stop button on the operator's console.
Specify: in operator's console, decayed 1/10 owing to insert the voltage of oscillograph CH1 passage, so the voltage amplitude that oscillograph shows is littler 10 times (if unattenuated 10 times than actual voltage value, what the whole screen of oscillograph showed is voltage waveform, shows when will influence short-circuit current); The voltage magnitude that channel C H2 shows is multiplied by coefficient 800/5 and is the short-circuit current size except that sample resistance 0.05 Ω again.
The key technical indexes of this voltage transformer (VT) sudden short circuit test unit is:
1, the scope of application
Be used in the test of 35kV and following electric pressure voltage transformer (VT) sudden short circuit, also scalable is 110kV.
2, environment for use
Environment temperature: 5～40 ℃; Relative humidity :≤80%;
3, major equipment
(1) testing transformer
A. specified transformation ratio: 400V/125V
B. rated capacity: 100kVA
(2) pressure regulator
A. rated voltage: 0-380V;
B. rated capacity: 100kVA
(3) measuring system
A. short circuit current measurement, accuracy: ± 5%
B. short-circuit voltage is measured, accuracy: ± 5%
C. the short-circuit current waveform is measured
D. short-circuit voltage waveform measurement.
Claims (3)
1. voltage transformer (VT) sudden short circuit test unit, it is characterized in that, this test unit is by electrical power control cabinet, pressure regulator, testing transformer and operator's console four parts are formed, the vacuum contactor of electrical power control cabinet links to each other with the input end of pressure regulator, the output terminal of pressure regulator links to each other with the input end of testing transformer, the output terminal of testing transformer is connected to the test product voltage transformer (VT), electrical power control cabinet, pressure regulator all links to each other with operator's console with testing transformer, electrical power control cabinet provides power supply for the whole test device, pressure regulator is regulated the required voltage of testing transformer, the testing transformer of exporting to of pressure regulator is controlled and measured to operator's console, thus and simulation test product voltage transformer (VT) high-pressure side sudden short circuit realization trial voltage mutual inductor sudden short circuit test.
2. voltage transformer (VT) sudden short circuit test unit according to claim 1 is characterized in that the specified transformation ratio of described testing transformer is 400V/125V, and rated capacity is 100kVA.
3. voltage transformer (VT) sudden short circuit test unit according to claim 1 is characterized in that, the rated voltage of described pressure regulator is that rated capacity is 100kVA greater than 0 to 380V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206295916U CN201974500U (en) | 2010-11-27 | 2010-11-27 | Testing apparatus for burst short circuit of voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206295916U CN201974500U (en) | 2010-11-27 | 2010-11-27 | Testing apparatus for burst short circuit of voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201974500U true CN201974500U (en) | 2011-09-14 |
Family
ID=44579600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206295916U Expired - Lifetime CN201974500U (en) | 2010-11-27 | 2010-11-27 | Testing apparatus for burst short circuit of voltage transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201974500U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
-
2010
- 2010-11-27 CN CN2010206295916U patent/CN201974500U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110914 |