CN204631130U - Transformer low-voltage short-circuit reactance proving installation - Google Patents
Transformer low-voltage short-circuit reactance proving installation Download PDFInfo
- Publication number
- CN204631130U CN204631130U CN201520333598.6U CN201520333598U CN204631130U CN 204631130 U CN204631130 U CN 204631130U CN 201520333598 U CN201520333598 U CN 201520333598U CN 204631130 U CN204631130 U CN 204631130U
- Authority
- CN
- China
- Prior art keywords
- transformer
- voltage
- circuit
- proving installation
- short
- Prior art date
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model belongs to transformer short-circuit reactance technical field of measurement and test, is specifically related to a kind of transformer low-voltage short-circuit reactance proving installation.This transformer low-voltage short-circuit reactance proving installation, comprise Operations Analysis, display screen, printer, keyboard and transformer, described Operations Analysis is connected with display screen, printer and keyboard, described control module is connected with transformer with current sampling circuit by voltage sample circuit, transformer is provided with ground terminal, and voltage sample circuit is connected with transformer with testing current end Ic by voltage tester end Ua, testing current end Ia, voltage tester end Ub, testing current end Ib, voltage tester end Uc with current sampling circuit.Its beneficial effect is: facilitate onsite application, uses simple, test connection once to complete, as required final test findings, calculation deviation and test data can be carried out numbering in time simultaneously and store or go out test result by printer field print.
Description
Technical field
The utility model belongs to transformer short-circuit reactance technical field of measurement and test, is specifically related to a kind of transformer low-voltage short-circuit reactance proving installation.
Background technology
Power transformer is topmost equipment in electrical network, deformation of transformer winding is main equipment damage accident serious in electrical network, winding deformation is the axis that occurs under mechanical force or electrodynamic action of Transformer Winding or radial dimension change, be usually expressed as winding bird caging, the feature such as bulge or displacement, transformer, in transport, after being collided or being in operation and suffering short-circuit current rush, all may make winding deform in installation process.These distortion likely make the insulation of winding be destroyed or its physical strength is declined, and will destroy, the safe operation of influential system when suffering superpotential or again suffer short-circuit current rush.Therefore detect transformer timely and effectively with or without winding deformation, displacement problem is very important.
At present, the method for deformation of transformer winding is diagnosed to mainly contain Low Voltage Impulse Method, frequency response method and low-voltage short circuit impedance method three kinds.Frequency response method develops from Low Voltage Impulse Method, and highly sensitive, instrumentation is simple, but this method does not have clear and definite criterion, measurement result is directly perceived, cannot rational judgment, belong to high frequency light current method of testing, in test, be vulnerable to the impact of various disturbing factor at the scene.
Utility model content
The utility model, in order to make up the defect of prior art, provides one and can judge whether Transformer Winding is out of shape, the transformer low-voltage short-circuit reactance proving installation whether transformer core loosens.
The utility model is achieved by the following technical solution:
Transformer low-voltage short-circuit reactance proving installation, comprise Operations Analysis, display screen, printer, keyboard and transformer, described Operations Analysis is connected with display screen, printer and keyboard, described control module is connected with transformer with current sampling circuit by voltage sample circuit, transformer is provided with ground terminal, and voltage sample circuit is connected with transformer with testing current end Ic by voltage tester end Ua, testing current end Ia, voltage tester end Ub, testing current end Ib, voltage tester end Uc with current sampling circuit.
Further, described voltage sample circuit is connected with external power supply, and external power supply adopts single-phase 220V/50HZ AC power or built-in power.
Further, described Operations Analysis is connected with supply module, adopts supply module single-phase 220V/50HZ AC power or built-in power.
Further, described voltage sample circuit is connected with transformer with voltage tester end Uc by voltage tester end Ua, voltage tester end Ub.
Further, described current sampling circuit is connected with transformer with testing current end Ic by testing current end Ia, testing current end Ib.
The beneficial effects of the utility model are: the utility model transformer low-voltage short-circuit reactance proving installation can by the horizontal ratio of more each single-phase unloaded parameter, it is loosening that the deviate of vertical ratio judges whether transformer iron-core structure has, and can be used as judge Transformer Winding whether occur distortion, the complementary criterion of displacement, working power and experiment power supply all adopt single-phase 220V/50HZ AC power or built-in power, facilitate onsite application, Operations Analysis carries out phase-splitting test to transformer, deviation calculates, use simple, test connection once completes, simultaneously can as required by final test findings, calculation deviation and test data are carried out numbering in time and are stored or go out test result by printer field print.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further described.
Accompanying drawing 1 is structural representation of the present utility model.
In figure, 1 Operations Analysis, 2 display screens, 3 printers, 4 keyboards, 5 voltage sample circuits, 6 current sampling circuits, 7 supply modules, 8 external power supplys, 9 transformers, 10 voltage tester end Ua, 11 testing current end Ia, 12 voltage tester end Ub, 13 testing current end Ib, 14 voltage tester end Uc, 15 testing current end Ic, 16 ground terminals.
Embodiment
Accompanying drawing 1 is a kind of specific embodiment of the present utility model.This utility model transformer 9 low-voltage short-circuit reactance proving installation, comprise Operations Analysis 1, display screen 2, printer 3, keyboard 4 and transformer 9, described Operations Analysis 1 is connected with display screen 2, printer 3 and keyboard 4, described control module is connected with transformer 9 with current sampling circuit 6 by voltage sample circuit 5, transformer 9 is provided with ground terminal 16, voltage sample circuit 5 and current sampling circuit 6 are by voltage tester end Ua10, testing current end Ia11, voltage tester end Ub12, testing current end Ib13, voltage tester end Uc14, be connected with transformer 9 with testing current end Ic15.
Further, described voltage sample circuit 5 is connected with external power supply 8, and external power supply 8 adopts single-phase 220V/50HZ AC power or built-in power.
Further, described Operations Analysis 1 is connected with supply module 7, adopts supply module 7 single-phase 220V/50HZ AC power or built-in power.
Further, described voltage sample circuit 5 is connected with transformer 9 with voltage tester end Uc14 by voltage tester end Ua10, voltage tester end Ub12.
Further, described current sampling circuit 6 is connected with transformer 9 with testing current end Ic15 by testing current end Ia11, testing current end Ib13.
This utility model transformer 9 low-voltage short-circuit reactance proving installation, can adopt single phase alternating current power supply (AC/220V) during use, what also can test out with built-in power is following five single-phase parameters: voltage U, electric current I, active-power P, reactive power Q and frequency F, when testing with the principle wiring of load test, tested transformer 9 is the whole short circuit of pressure side not, and shunting switch is put into specified gear, and high-pressure side A B C connects voltage tester end Ua10 respectively, testing current end Ia11, voltage tester end Ub12, testing current end Ib13, voltage tester end Uc14, testing current end Ic15, according to the type of transformer 9, draws voltage U, electric current I, active-power P, reactive power Q and frequency F, calculate the short-circuit impedance Zk of the corresponding phase of transformer 9 by Operations Analysis 1 according to these five parameters, short-circuit reactance Xk, leakage inductance Lk, and the horizontal ratio passing through Operations Analysis 1 more each single phase impedance parameter, the deviate of vertical ratio judges whether transformer 9 winding occurs distortion, displacement, when testing with the principle wiring of no-load test, tested transformer 9 high-pressure side A B C opens a way, and shunting switch is put into specified gear, and low-pressure side a b c n connects voltage tester end Ua10 respectively, testing current end Ia11, voltage tester end Ub12, testing current end Ib13, voltage tester end Uc14, testing current end Ic15, according to the type of transformer 9, draws voltage U, electric current I, active-power P, reactive power Q and frequency F, calculate the no-load current Ios of the corresponding phase of transformer 9 by Operations Analysis 1 according to these five parameters, open circuit loss Pos, unloaded equivalent impedance Zos, and pass through the horizontal ratio of Operations Analysis 1 more each single phase impedance parameter, the deviate of vertical ratio judges whether transformer 9 core structure has loosening, and this device can be tested single transformer, can also alternate method test be carried out to transformer and single plane method test be carried out to transformer.
The utility model is not limited to above-mentioned embodiment, anyone should learn make under enlightenment of the present utility model with the utility model, there is identical or close technical scheme, all fall within protection domain of the present utility model.
Technology, shape, structure part that the utility model is not described in detail are known technology.
Claims (5)
1. a transformer low-voltage short-circuit reactance proving installation, it is characterized in that, comprise Operations Analysis, display screen, printer, keyboard and transformer, described Operations Analysis is connected with display screen, printer and keyboard, described control module is connected with transformer with current sampling circuit by voltage sample circuit, transformer is provided with ground terminal, and voltage sample circuit is connected with transformer with testing current end Ic by voltage tester end Ua, testing current end Ia, voltage tester end Ub, testing current end Ib, voltage tester end Uc with current sampling circuit.
2. a kind of transformer low-voltage short-circuit reactance proving installation according to claim 1, is characterized in that: described voltage sample circuit is connected with external power supply.
3. a kind of transformer low-voltage short-circuit reactance proving installation according to claim 1, is characterized in that: described Operations Analysis is connected with supply module.
4. a kind of transformer low-voltage short-circuit reactance proving installation according to claim 1, is characterized in that: described voltage sample circuit is connected with transformer with voltage tester end Uc by voltage tester end Ua, voltage tester end Ub.
5. a kind of transformer low-voltage short-circuit reactance proving installation according to claim 1, is characterized in that: described current sampling circuit is connected with transformer with testing current end Ic by testing current end Ia, testing current end Ib.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520333598.6U CN204631130U (en) | 2015-05-21 | 2015-05-21 | Transformer low-voltage short-circuit reactance proving installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520333598.6U CN204631130U (en) | 2015-05-21 | 2015-05-21 | Transformer low-voltage short-circuit reactance proving installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204631130U true CN204631130U (en) | 2015-09-09 |
Family
ID=54050147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520333598.6U Expired - Fee Related CN204631130U (en) | 2015-05-21 | 2015-05-21 | Transformer low-voltage short-circuit reactance proving installation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204631130U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113484797A (en) * | 2021-06-15 | 2021-10-08 | 中电电气(江苏)变压器制造有限公司 | Short-circuit bearing capacity test method for single-phase three-winding traction transformer for AT power supply |
-
2015
- 2015-05-21 CN CN201520333598.6U patent/CN204631130U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113484797A (en) * | 2021-06-15 | 2021-10-08 | 中电电气(江苏)变压器制造有限公司 | Short-circuit bearing capacity test method for single-phase three-winding traction transformer for AT power supply |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202134154U (en) | Training and examine system for authentic false wiring detection of electric energy metering device | |
| CN105259489B (en) | Extra-high voltage neutral reactor scene induced over voltage withstand test system and method | |
| CN203276027U (en) | Digital dynamic closed-loop test system of electricity smooth and steady supply device | |
| CN106443371A (en) | Novel cable insulation online detection apparatus | |
| CN205027865U (en) | Dry -type air -core reactor interturn insulation electrical ageing test system | |
| CN105259488A (en) | 500kV high-voltage parallel electric reactor turn-to-turn insulation performance testing platform | |
| CN105467239A (en) | Voltage transformer excitation characteristic test system | |
| CN105352427B (en) | A kind of deformation of transformer winding amount online test method | |
| CN104614604A (en) | 10kV cable fault simulation device and fault simulation method | |
| CN207516488U (en) | A kind of power cable detection device based on polarization depolarization current | |
| CN203630309U (en) | Auxiliary device for verification of SF6 density relay with oxidized contacts | |
| CN204631130U (en) | Transformer low-voltage short-circuit reactance proving installation | |
| CN103439072A (en) | electronic current transformer one-time coupling vibration test device and method thereof | |
| CN111123050B (en) | Transformer partial discharge test device for transformer and GIS in GIL connection mode | |
| CN206096309U (en) | Ferroresonance detects and prevention and cure combined test platform | |
| CN205450042U (en) | Experimental switching operation platform of power transformer | |
| CN205139307U (en) | 500kV high pressure parallel reactor interturn insulation capability test device | |
| CN111707887A (en) | Optimal scheme for routine test of power transformer | |
| CN109283437A (en) | PT broken string and singlephase earth fault simulator and method | |
| CN204332204U (en) | A kind of 10kV cable fault simulation device | |
| CN205844468U (en) | Dry-type air-core reactor turn-to-turn insulation performance test system | |
| CN105353258B (en) | A kind of test method of test transformer differential protection reactance transformer excitation surge current | |
| CN104183379A (en) | Connecting device for maintenance of secondary side of electric power current transformer | |
| CN203085030U (en) | Transformer short-circuit impedance analog device | |
| CN203551241U (en) | One-time coupled vibration test device for electronic current transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150909 Termination date: 20160521 |