CN117214778A - Comprehensive test platform for transformer - Google Patents
Comprehensive test platform for transformer Download PDFInfo
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- CN117214778A CN117214778A CN202311313049.8A CN202311313049A CN117214778A CN 117214778 A CN117214778 A CN 117214778A CN 202311313049 A CN202311313049 A CN 202311313049A CN 117214778 A CN117214778 A CN 117214778A
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- 238000012360 testing method Methods 0.000 title claims abstract description 159
- 238000004804 winding Methods 0.000 claims abstract description 83
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 15
- 230000007246 mechanism Effects 0.000 claims description 4
- 238000013461 design Methods 0.000 description 6
- 238000009413 insulation Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The invention relates to the technical field of transformers, in particular to a comprehensive test platform of a transformer, which comprises an aluminum alloy box, wherein a wiring operation platform is arranged in the aluminum alloy box, a high-voltage winding, a medium-voltage winding, a low-voltage winding and a terminal screen line concentration box are respectively arranged in the wiring operation platform, a test main clamp and a secondary clamp are also arranged in the wiring operation platform in a matching manner, the test main clamp is connected with the test main clamp, one end of the test main line is respectively connected with an A phase of the high-voltage winding, the medium-voltage winding and the low-voltage winding of the transformer correspondingly, and the other end of the test main line is connected with the high-voltage winding, the medium-voltage winding and the low-voltage winding of the wiring operation platform correspondingly. In the comprehensive test platform for the transformer, various test wiring is completed on the ground, the use frequency of overhead working vehicles is reduced to the greatest extent, the working risk of personnel is reduced, the working efficiency is greatly improved, the power failure time of the transformer is shortened, and the reliability index of the transformer is improved.
Description
Technical Field
The invention relates to the technical field of transformers, in particular to a comprehensive test platform for a transformer.
Background
The transformer is used as an electric primary main device, and power failure electric test work needs to be carried out regularly according to the electric equipment overhaul test procedure, and because the transformer bushing leads are higher (particularly 220kV and above transformers), test projects are more and the wiring of each test project is different, the high-altitude operation vehicle needs to be used for frequently changing the test wiring at high positions for different test projects. The wiring time of the overhead working truck is about 3/5 of the total time of the high-voltage test of the transformer, and special personnel are required to monitor the overhead working truck. On one hand, the operation time at the high position is longer, so that the risks of high falling, induction and the like are increased. On the other hand, the manpower resources are not liberated, and the field work efficiency is not high.
Existing transformer integrated test platforms typically place the transformer on a fixed table and then place various test equipment and wiring around it. This layout has the following problems: firstly, the occupied space is larger, and larger laboratory or outdoor space is needed; secondly, the operation is inconvenient, and testers need to shuttle back and forth between equipment and wiring, so that the efficiency is affected; thirdly, the equipment is not safe enough to use, because a tester may inadvertently touch some electrified connecting terminals; fourth, for some large transformers, it is not possible to test on existing benches due to size and weight limitations.
Disclosure of Invention
The invention aims to provide a comprehensive test platform for a transformer, which aims to solve the problems that the occupied space is large and a large laboratory or outdoor space is needed in the background technology; the operation is inconvenient, and a tester needs to shuttle back and forth between equipment and wiring, so that the efficiency is affected; the device is not safe enough to use because the tester may inadvertently touch some live terminals; for some large transformers, it is not possible to test on existing tables due to size and weight limitations.
In order to achieve the above purpose, the invention provides a comprehensive test platform for a transformer, which comprises an aluminum alloy box, wherein a wiring operation platform is arranged in the aluminum alloy box, a high-voltage winding, a medium-voltage winding, a low-voltage winding and a terminal screen line concentration box are respectively arranged in the wiring operation platform, a test main clamp and a slave clamp are also arranged in the wiring operation platform in a matching way, the test main clamp is connected with the test main clamp, one end of the test main line is respectively connected with an A phase of the high-voltage winding, the medium-voltage winding and the low-voltage winding of the transformer correspondingly, and the other end of the test main line is connected with the high-voltage winding, the medium-voltage winding and the low-voltage winding of the wiring operation platform correspondingly.
As a preferable scheme of the invention, rubber handles are arranged on two sides of the aluminum alloy box.
As the preferable scheme of the invention, the test main clamp is divided into a four-core test main clamp with a short circuit structure and a three-core test main clamp without a short circuit structure, wherein the three-core test main clamp is a high-voltage winding test main clamp, and the four-core test main clamp is a middle-voltage winding test main clamp and a low-voltage winding test main clamp and is used for short circuit among windings in a short circuit test.
As the preferable scheme of the invention, the secondary clamp is divided into a three-core secondary clamp and a four-core secondary clamp, and is used in cooperation with a test main clamp, and the three-core branching is connected with the test main clamp and the three-core secondary clamp of the high-voltage winding and is connected with the high-voltage winding of the transformer and the wiring operation platform; the four-core branching connection test master clamp and four-core slave clamp of the medium-voltage winding and the low-voltage winding are connected into the medium-voltage winding and the low-voltage winding of the transformer and the wiring operation platform.
As the preferable scheme of the invention, the end screen line concentration box comprises eight access terminals, wherein the upper row is a high-voltage end screen terminal, and the lower row is a medium-voltage end screen terminal; when the transformer terminal end screen testing device is used, the terminal end screen testing wires are respectively connected with the transformer terminal end screen, when the terminal end screen wire collecting box is used for wiring, the terminal outer ring spring nuts are pressed down and inserted into the terminal end screen testing wires, and then the nuts are loosened, so that the connection is reliable after the nuts are restored to be smooth; the red clamp of the end screen test wire is a measuring terminal, and is connected with the end screen outgoing line of the transformer sleeve when in use, and the black shielding wire is connected with the clamp to be connected with the transformer body to be grounded.
As a preferable scheme of the invention, the whole test main clamp is of a U-shaped structure, a three-phase port and a summarizing port are arranged at the upper part of the test main clamp, and a screw is arranged at the lower part of the test main clamp.
As a preferable scheme of the invention, a single-phase port is arranged on one side of the slave clamp, a connecting wire is arranged on the outer side of the slave clamp, a conductive block is arranged at the clamping opening of the slave clamp, one end of the connecting wire is connected with the conductive block through a conductive terminal, and the other end of the connecting wire is connected to the single-phase port.
As a preferable mode of the invention, the test master clip and the test slave clip are both provided with an insulating protective layer.
Compared with the prior art, the invention has the beneficial effects that:
1. in the comprehensive test platform for the transformer, various test wiring is completed on the ground, the use frequency of overhead working vehicles is reduced to the greatest extent, the working risk of personnel is reduced, the working efficiency is greatly improved, the power failure time of the transformer is shortened, and the reliability index of the transformer is improved.
2. In the comprehensive test platform of the transformer, a test main line is connected into a test main clamp, one end of the test main line is connected into A phases of a high-voltage winding, a medium-voltage winding and a low-voltage winding of the transformer, and the other end of the test main line is connected into the high-voltage winding, the medium-voltage winding and the low-voltage winding of the wiring operation platform, so that wiring is more convenient and safer, an access point can be accurately controlled, and the test accuracy is improved.
3. In the comprehensive test platform of the transformer, matched accessories are rich, an existing single test instrument can be used after one-time wiring, under the condition that wiring on the transformer is not required to be changed, tests of insulation resistance (winding insulation and end screen to ground insulation), dielectric loss and capacitance (winding dielectric loss and sleeve dielectric loss), direct resistance, transformation ratio, on-load tap switch characteristics, low-voltage short circuit impedance and the like are completed, rubber handles are mounted on two sides of an aluminum alloy box, movement and carrying are more convenient, and meanwhile stability of equipment is improved.
4. In this transformer integrated test platform, test owner presss from both sides two kinds of four core test owner presss from both sides and the three core test owner that do not take short circuit mechanism of taking short circuit structure for carry out the short circuit between the winding when short resistance test, thereby improved the reliability of test, follow the clamp and also divide into three core follow clamp and four core follow clamp two kinds, cooperation test owner presss from both sides and uses, and the connected mode is the same with test owner clamp, makes the wiring more nimble convenient.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic plan view of the present invention;
FIG. 3 is a schematic view of the structure of the test master clip according to the present invention;
fig. 4 is a schematic view of the structure of the slave clip in the present invention.
The meaning of each reference sign in the figure is:
1. a rubber handle; 2. a wiring operation platform; 3. an aluminum alloy box; 4. testing a main clamp; 5. a three-phase port; 6. a summary port; 7. a screw; 8. a slave clamp; 9. a connecting wire; 10. a conductive terminal; 11. a conductive block; 12. a single phase port.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a comprehensive test platform for transformers, which comprises an aluminum alloy box 3, wherein a wiring operation platform 2 is arranged in the aluminum alloy box 3, a high-voltage winding, a medium-voltage winding, a low-voltage winding and a terminal line concentration box are respectively arranged in the wiring operation platform 2, the wiring operation platform 2 is also provided with a test main clamp 4 and a slave clamp 8 in a matched mode, the test main line is connected with the test main clamp 4, one end of the test main line is respectively corresponding to an A phase of the high-voltage winding, the medium-voltage winding and the low-voltage winding of the transformer, and the other end of the test main line is respectively corresponding to the high-voltage winding, the medium-voltage winding and the low-voltage winding of the transformer, and the access point can be accurately controlled, so that the accuracy of the test is improved, the design also improves the maintainability and the expandability of equipment, and the aluminum alloy box 3 enables the wiring operation performed on the wiring operation platform 2 to be more convenient and safe as required, and the wiring operation platform 2 can be effectively protected, meanwhile, the wiring operation platform 2 is not damaged, the wiring operation box is not easy to be fully damaged, and the equipment is fully arranged in the internal layout of the aluminum alloy box 3, and the equipment is more convenient to maintain.
Specifically, rubber handles 1 are installed on two sides of the aluminum alloy box 3, so that the moving and carrying are more convenient, and meanwhile, the stability of equipment is also improved. This design also allows for user comfort and safety, as the soft texture of the rubber handle 1 reduces hand fatigue and increases the slip resistance of the device.
Further, the test main clamp 4 is divided into a four-core test main clamp with a short circuit structure and a three-core test main clamp without a short circuit mechanism, wherein the three-core test main clamp is a high-voltage winding test main clamp, and the four-core test main clamp is a middle-voltage winding test main clamp and a low-voltage winding test main clamp and is used for short circuit among windings in a short circuit test, so that the short circuit among the windings in the short circuit test is more convenient, quick and accurate. This not only improves the reliability of the test, but also reduces the difficulty and complexity of the test.
Further, the secondary clamp 8 is divided into a three-core secondary clamp and a four-core secondary clamp, and is matched with the test main clamp 4 to be used, the three-core branching is connected with the test main clamp 4 and the three-core secondary clamp of the high-voltage winding, and the three-core branching is connected with the high-voltage winding of the transformer and the wiring operation platform 2; the four-core branching connection medium-voltage winding and low-voltage winding's test master clamp 4 and four-core slave clamp, and the medium-voltage winding and the low-voltage winding of access transformer and wiring operation platform 2 for the wiring is nimble convenient more, simultaneously, this kind of design has still reduced the whole height of equipment, makes the transport and the maintenance of equipment easier.
Further, the end screen line concentration box is in the prior art and comprises eight access terminals, wherein the upper row is a high-voltage end screen terminal, and the lower row is a medium-voltage end screen terminal; when the transformer terminal end screen testing device is used, the terminal end screen testing wires are respectively connected with the transformer terminal end screen, when the terminal end screen wire collecting box is used for wiring, the terminal outer ring spring nuts are pressed down and inserted into the terminal end screen testing wires, and then the nuts are loosened, so that the connection is reliable after the nuts are restored to be smooth; the red clamp of end screen test line is measuring terminal, inserts transformer sleeve pipe end screen lead-out wire when using, and black shielding line inserts clamp connection transformer body ground connection can for end screen test is more accurate, reliable. Meanwhile, the access terminal of the end screen line concentration box is divided into a high-voltage end screen terminal and a medium-voltage end screen terminal, so that connection of end screen test lines is clearer, and the possibility of wiring errors is reduced.
Further, the whole U-shaped structure that is of the main clamp 4 of the test, three-phase port 5 and summarizing port 6 are installed on the upper portion of the main clamp 4 of the test, screw 7 is installed on the lower portion of the main clamp 4 of the test, make the structure of the main clamp of the test more compact, stable, also make things convenient for the maintenance and maintenance of equipment simultaneously. The design of three-phase port 5 and gathering port 6 is installed on upper portion for insert three-phase power and gather the signal convenient and fast more, only need to precess screw rod 7 when using and remove and accomplish the short circuit, except short resistance, with screw rod 7 unscrew when other test items, do not carry out the short circuit.
Further, install single-phase port 12 from one side of pressing from both sides 8, be provided with connecting wire 9 from pressing from both sides 8 outsides, install conducting block 11 from the grip opening department on pressing from both sides 8, the one end of connecting wire 9 is connected with conducting block 11 through conductive terminal 10, the other end is connected to single-phase port 12 for insert single-phase power supply convenient and fast more, the outside is provided with the design that connecting wire 9 and conducting block 11 are connected, make from pressing from both sides 8 use nimble convenient more, simultaneously, conducting block 11's design has still increased the conductive property and the stability of equipment.
Further, the test master clip 4 and the slave clip 8 are both provided with insulating protection layers to prevent electric shock accidents during operation.
When the comprehensive test platform of the transformer is used, the comprehensive test platform of the transformer is firstly placed beside the transformer to be tested, the wiring terminal of the wiring operation platform 2 is connected with the corresponding wiring port of the transformer, the test main line is connected with the test main clamp 4, the four-core test main clamp with a short circuit structure or the three-core test main clamp without a short circuit mechanism is selected according to test requirements, the four-core test main clamp is connected with the test main line, the slave clamp 8 is matched with the test main clamp 4 for testing according to actual conditions, and the three-core branching wire is connected with the test main clamp 4 and the three-core slave clamp of the high-voltage winding and is connected with the high-voltage winding of the transformer and the wiring operation platform 2; the four-core branch line is connected with the test master clamp 4 and the four-core slave clamp of the medium-voltage winding and the low-voltage winding, and is connected with the medium-voltage winding and the low-voltage winding of the transformer and the wiring operation platform 2, the terminal test lines are respectively corresponding to the terminal of the transformer according to the wiring requirement of the terminal line concentration box, the terminal spring nuts are pressed down, the terminal test lines are inserted and loosened, the nuts are restored to be smooth and can be connected reliably, the three-phase and summarizing test is carried out on the transformer through the three-phase port 5 and the summarizing port 6 according to the test requirement, the performance and the quality of the transformer can be evaluated through the record and analysis of the test result, and whether the performance and the quality of the transformer meet the relevant standards and regulations or not is determined, the transformer comprehensive test platform can realize the test on the high-voltage, the medium-voltage and the low-voltage winding of the transformer through the working principle and the working process, and realize the evaluation on the overall performance of the transformer through the test on the terminal.
Finally, it should be noted that, in the wiring operation platform 2, the end screen line concentration box and the like in this embodiment, the electronic components in the above components are all universal standard components or components known to those skilled in the art, the structure and principle thereof are all known by those skilled in the art through technical manuals or known through conventional experimental methods, at the free position of the device, all the electrical components are connected through wires, and the specific connection means should refer to the sequence of operation between the electrical components in the working principle to complete the electrical connection, which is known in the art.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present invention, and are not intended to limit the invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides a transformer integrated test platform, includes aluminum alloy case (3), its characterized in that: the wiring operation platform (2) is installed in the aluminum alloy box (3), a high-voltage winding, a medium-voltage winding, a low-voltage winding and a terminal screen line concentration box are installed in the wiring operation platform (2) respectively, the wiring operation platform (2) is also provided with a test main clamp (4) and a secondary clamp (8) in a matching mode, the test main line is connected into the test main clamp (4), one end of the test main line is connected into the high-voltage winding, the medium-voltage winding and the A phase of the low-voltage winding of the transformer correspondingly respectively, and the other end of the test main line is connected into the high-voltage winding, the medium-voltage winding and the low-voltage winding of the wiring operation platform (2) correspondingly respectively.
2. The comprehensive test platform for transformers according to claim 1, wherein: rubber handles (1) are arranged on two sides of the aluminum alloy box (3).
3. The comprehensive test platform for transformers according to claim 1, wherein: the test main clamp (4) is divided into a four-core test main clamp with a short circuit structure and a three-core test main clamp without a short circuit mechanism, wherein the three-core test main clamp is a high-voltage winding test main clamp, and the four-core test main clamp is a middle-voltage winding test main clamp and a low-voltage winding test main clamp and is used for short circuit among windings in a short circuit test.
4. The comprehensive test platform for transformers according to claim 1, wherein: the secondary clamp (8) is divided into a three-core secondary clamp and a four-core secondary clamp, and is matched with the test main clamp (4) to be used, the three-core branching is connected with the test main clamp (4) and the three-core secondary clamp of the high-voltage winding, and the three-core branching is connected with the high-voltage winding of the transformer and the wiring operation platform (2); the four-core branching connection test master clamp (4) and the four-core slave clamp of the medium-voltage winding and the low-voltage winding are connected into the medium-voltage winding and the low-voltage winding of the transformer and the wiring operation platform (2).
5. The comprehensive test platform for transformers according to claim 4, wherein: the end screen line concentration box comprises eight access terminals, wherein the upper row is a high-voltage end screen terminal, and the lower row is a medium-voltage end screen terminal; when the transformer terminal end screen testing device is used, the terminal end screen testing wires are respectively connected with the transformer terminal end screen, when the terminal end screen wire collecting box is used for wiring, the terminal outer ring spring nuts are pressed down and inserted into the terminal end screen testing wires, and then the nuts are loosened, so that the connection is reliable after the nuts are restored to be smooth; the red clamp of the end screen test wire is a measuring terminal, and is connected with the end screen outgoing line of the transformer sleeve when in use, and the black shielding wire is connected with the clamp to be connected with the transformer body to be grounded.
6. A comprehensive test platform for transformers according to claim 3, wherein: the test main clamp (4) is of a U-shaped structure, a three-phase port (5) and a summarizing port (6) are arranged on the upper portion of the test main clamp (4), and a screw (7) is arranged on the lower portion of the test main clamp (4).
7. The comprehensive test platform for transformers according to claim 4, wherein: the single-phase port (12) is installed from one side of pressing from both sides (8), from the outside of pressing from both sides (8) is provided with connecting wire (9), from the grip opening department on pressing from both sides (8) install conducting block (11), the one end of connecting wire (9) is connected with conducting block (11) through conducting terminal (10), and the other end is connected to single-phase port (12).
8. The comprehensive test platform for transformers according to claim 7, wherein: the test master clamp (4) and the test slave clamp (8) are both provided with insulating protection layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311313049.8A CN117214778A (en) | 2023-10-11 | 2023-10-11 | Comprehensive test platform for transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311313049.8A CN117214778A (en) | 2023-10-11 | 2023-10-11 | Comprehensive test platform for transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117214778A true CN117214778A (en) | 2023-12-12 |
Family
ID=89051275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311313049.8A Pending CN117214778A (en) | 2023-10-11 | 2023-10-11 | Comprehensive test platform for transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117214778A (en) |
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2023
- 2023-10-11 CN CN202311313049.8A patent/CN117214778A/en active Pending
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