CN213210342U - Built-in partial discharge defect simulation device - Google Patents
Built-in partial discharge defect simulation device Download PDFInfo
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- CN213210342U CN213210342U CN202022253241.0U CN202022253241U CN213210342U CN 213210342 U CN213210342 U CN 213210342U CN 202022253241 U CN202022253241 U CN 202022253241U CN 213210342 U CN213210342 U CN 213210342U
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Abstract
The application provides a pair of built-in partial discharge defect analogue means has adopted split type structure, and when intelligent transformer was in the outage state, use the push rod in side flange mouth department, put the part with intelligent transformer office inside pushing the transformer. Eight flange openings are formed, high-voltage partial discharge openings are formed in six positions, and after the push rod is pushed into the intelligent transformer, the partial discharge components are located at the lower end of each phase of high-voltage sleeve. The lower two parts are low-voltage discharging ports, and after the push rod is pushed in, the partial discharging components are positioned near 3 cakes and 4 cakes of each low-voltage coil. And if the partial discharge of which type needs to be simulated, the corresponding partial discharge component is pushed into the corresponding flange opening, the model is effective when the push rod is pushed in place, and the model is invalid when the push rod is pulled out. Compared with the prior art that each type of partial discharge needs to be simulated by using a corresponding device, the device provided by the application can simulate various common types of partial discharge. The application has humanized design, simple and practical operation and convenient and fast use.
Description
Technical Field
The application relates to the technical field of transformer defect simulation, in particular to a built-in partial discharge defect simulation device.
Background
Partial discharge is a discharge that occurs between, but not through, partial areas of the insulation system under the influence of an electric field. In electrical equipment, the common partial discharge forms are mainly classified into four types, namely, a bubble (air gap) type, an interface type (interface between an electrode and an insulating material), a burr (spike) type, and a large-curvature radius type (floating potential). According to the above classification, in actual production and research, in order to better distinguish the partial discharge type, the partial discharge is colloquially classified into four types of internal air gap discharge, creeping discharge, corona discharge, and floating discharge.
The energy at the beginning of partial discharge is very small, the influence on the insulation system is very small, and the perfect insulation in the insulation system without discharge can still bear the operating voltage of equipment. However, under a long-term operating voltage, insulation damage caused by partial discharge continues to progress, so that the dielectric properties of an insulation system gradually deteriorate, and finally, an insulation accident occurs. In the prior art, through a partial discharge measurement experiment, whether partial discharge, severity and parts exist in the electrical equipment can be found in time, so that treatment measures are taken in time, and the purpose of preventing accidents is achieved.
However, in the prior art, each type of partial discharge needs to be simulated by using a corresponding device, so that when simulating a plurality of different types of partial discharges, the equipment management is inconvenient and confusion is easy to occur. Based on this, the application provides a built-in partial discharge defect simulation device for solving the technical problem that multiple devices are needed to be used when the partial discharge is simulated in the prior art.
SUMMERY OF THE UTILITY MODEL
The application provides a built-in partial discharge defect simulation device to solve the technical problem that multiple devices are needed to be used when partial discharge is simulated.
The application provides a built-in partial discharge defect simulation device, which comprises an intelligent transformer, a push rod and a partial discharge component;
the side surface of the intelligent transformer is provided with a high-voltage release port and a low-voltage release port; the high-voltage partial discharge port comprises an A-phase surface port, an A-phase sharp port, a B-phase suspension port, a B-phase air gap, a C-phase air gap and a C-phase oil gap, and the low-voltage partial discharge port comprises a B-phase winding turn-to-turn port and a C-phase winding turn-to-turn port;
the high-voltage partial discharge port is communicated with the lower ends of the high-voltage sleeves of all phases in the intelligent transformer;
the low-voltage partial discharge port is communicated with 3 cakes and 4 cakes of each low-voltage coil in the intelligent transformer;
the tail end of the push rod is provided with a placing groove; the partial discharge component is arranged in the placing groove;
when the push rod is inserted into the high-voltage release port or the low-voltage release port, the built-in partial discharge defect simulation device is started; and when the push rod is pulled out of the high-voltage release port or the low-voltage release port, the built-in partial discharge defect simulation device stops.
Optionally, one end of the partial discharge component is a low voltage electrode, the other end of the partial discharge component is a high voltage electrode, and a conductive medium is arranged between the low voltage electrode and the high voltage electrode.
Optionally, the conductive medium is an oil gap.
Optionally, the conductive medium is a special filling suspension discharge fitting.
Optionally, the high voltage electrode is a tip high voltage electrode.
Optionally, the conductive medium is a special fitting for filling creeping discharge; the high-voltage electrode is an edge high-voltage electrode.
Optionally, one end of the partial discharge component is an electrode mounting seat, the other end of the partial discharge component is a ground electrode mounting seat, and a special fitting for gas discharge in oil is arranged between the electrode mounting seat and the ground electrode mounting seat.
Optionally, the partial discharge component is provided with an inter-turn electricity-getting electrode, one end of the inter-turn electricity-getting electrode is provided with N turns of the low-voltage winding, and the other end of the inter-turn electricity-getting electrode is provided with M turns of the low-voltage winding.
The application provides a pair of built-in partial discharge defect analogue means has adopted split type structure, under the prerequisite of intelligent transformer outage, uses the push rod in intelligent transformer side flange mouth department, puts the part with intelligent transformer office and pushes into inside the transformer. Eight flange openings are formed, six upper openings are high-voltage partial discharge openings, and after the push rod is pushed into the intelligent transformer, the partial discharge components are located at the lower end of each phase of high-voltage sleeve. The lower two parts are low-voltage discharging ports, and after the push rod is pushed in, the partial discharging components are positioned near 3 cakes and 4 cakes of each low-voltage coil. And if the partial discharge of which type needs to be simulated, the corresponding partial discharge component is pushed into the corresponding flange opening, the model is effective when the push rod is pushed in place, and the model is invalid when the push rod is pulled out. Compared with the prior art that each type of partial discharge needs to be simulated by using a corresponding device, the device provided by the application can simulate various common types of partial discharge. Moreover, the application is humanized in design, simple and practical in operation and convenient and fast to use.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a built-in partial discharge defect simulation apparatus according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a side flange opening of an intelligent transformer provided in an embodiment of the present application;
FIG. 3 is a schematic structural diagram of a push rod according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a partial discharge component according to an embodiment of the present application;
FIG. 5 is a schematic structural diagram of an oil clearance discharge component provided in an embodiment of the present application;
FIG. 6 is a schematic structural diagram of a floating discharge unit provided in an embodiment of the present application;
FIG. 7 is a schematic structural diagram of a tip discharge device provided in an embodiment of the present application;
FIG. 8 is a schematic structural diagram of a creeping discharge part provided in an embodiment of the present application;
FIG. 9 is a schematic structural diagram of an air-gap discharge device provided in an embodiment of the present application;
fig. 10 is a schematic structural diagram of a winding inter-turn discharge component according to an embodiment of the present application.
Illustration of the drawings:
wherein, 1-intelligent transformer; 11-A phase edge opening; 12-a phase tip port; 13-B phase suspension port; a 14-B phase air gap; a 15-C phase air gap; a 16-C phase oil gap; 17-b phase winding turn-to-turn; 18-c phase winding turn-to-turn junctions; 2-a push rod; 3-a partial discharge component; 31-a low voltage electrode; 32-a high voltage electrode; 321-a tip high voltage electrode; 322-edge high voltage electrode; 33-a conductive medium; 331-oil clearance; 332-fill suspension discharge specific fittings; 333-filling the creeping discharge special fitting; 334-special fittings for gas discharge in oil; 34-an electrode mount; 35-ground electrode mount; 36-inter-turn electricity taking electrode; 37-N turns of low voltage winding; 38-low voltage winding M turns; 4-placing the groove.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
Referring to fig. 1, a schematic structural diagram of a built-in partial discharge defect simulation apparatus provided in an embodiment of the present application is shown.
The embodiment of the application provides a built-in partial discharge defect simulation device, which comprises an intelligent transformer 1, a push rod 2 and a partial discharge component 3.
The side of the intelligent transformer 1 is provided with a high-voltage release port and a low-voltage release port. The high-voltage partial discharge port comprises an A-phase surface port 11, an A-phase sharp port 12, a B-phase suspension port 13, a B-phase air gap port 14, a C-phase air gap port 15 and a C-phase oil gap port 16, and the low-voltage partial discharge port comprises a B-phase winding turn-to-turn port 17 and a C-phase winding turn-to-turn port 18.
And the high-voltage release port is communicated with the lower ends of all phases of high-voltage sleeves in the intelligent transformer 1.
And the low-voltage release port is communicated with the vicinity of 3 cakes and 4 cakes of each low-voltage coil in the intelligent transformer 1.
The tail end of the push rod 2 is provided with a placing groove 4. The partial discharge component 3 is arranged in the placing groove 4.
When the push rod 2 is inserted into the high-voltage release opening or the low-voltage release opening, the built-in partial discharge defect simulation device is started. When the push rod 2 is pulled out of the high-voltage release port or the low-voltage release port, the built-in partial discharge defect simulation device stops.
When the built-in partial discharge defect simulation device is operated, the push rod 2 needs to be inserted or pulled out under the condition that the intelligent transformer 1 is powered off.
The structural schematic diagram of the side flange port of the intelligent transformer is specifically shown in fig. 2.
Structure schematic diagram of the push rod 2 referring specifically to fig. 3, the push rod is used for pushing various partial discharge components into the transformer.
The application provides a pair of built-in partial discharge defect analogue means, this application has adopted split type structure, under the prerequisite of intelligent transformer outage, uses the push rod in intelligent transformer side flange mouth department, puts the part with the intelligent transformer office and pushes into inside the transformer. Eight flange openings are formed, six upper openings are high-voltage partial discharge openings, and after the push rod is pushed into the intelligent transformer, the partial discharge components are located at the lower end of each phase of high-voltage sleeve. The lower two parts are low-voltage discharging ports, and after the push rod is pushed in, the partial discharging components are positioned near 3 cakes and 4 cakes of each low-voltage coil. And if the partial discharge of which type needs to be simulated, the corresponding partial discharge component is pushed into the corresponding flange opening, the model is effective when the push rod is pushed in place, and the model is invalid when the push rod is pulled out. Compared with the prior art that each type of partial discharge needs to be simulated by using a corresponding device, the device provided by the application can simulate various common types of partial discharge. Moreover, the application is humanized in design, simple and practical in operation and convenient and fast to use.
Further, one end of the partial discharge component 3 is a low voltage electrode 31, the other end of the partial discharge component 3 is a high voltage electrode 32, and a conductive medium 33 is arranged between the low voltage electrode 31 and the high voltage electrode 32.
The schematic structure of the partial discharge unit is shown in fig. 4.
Further, the conductive medium 33 is an oil gap 331.
Referring to fig. 5, the low voltage electrode 31, the oil gap 331 and the high voltage electrode 32 constitute an oil gap discharge part, which is inserted into the C-phase oil gap 16 through a push rod, so that the device has the characteristic of oil gap type partial discharge phenomenon.
Further, the conductive medium 33 is a filling suspension discharge special fitting 332.
Referring to fig. 6, the low voltage electrode 31, the filling suspension discharge special fitting 332 and the high voltage electrode 32 constitute a suspension discharge component, and the suspension discharge component is inserted into the B-phase suspension port 13 through the push rod, so that the device has the characteristic of suspension type partial discharge phenomenon.
Further, the high voltage electrode 32 is a tip high voltage electrode 321.
Referring to fig. 7, the low voltage electrode 31, the oil gap 331 and the sharp high voltage electrode 321 constitute a sharp discharge part, which is inserted into the phase a sharp port 12 by a push rod, so that the device is characterized by a sharp partial discharge phenomenon.
Further, the conductive medium 33 is a fitting 333 dedicated for filling creeping discharge. The high voltage electrode 32 is a surface high voltage electrode 322.
Referring to fig. 8, the low voltage electrode 31, the fitting 333 for filling creeping discharge and the creeping high voltage electrode 322 constitute a creeping discharge part, and the creeping discharge part is inserted into the phase a creeping port 11 by a push rod, so that the device has the characteristic of creeping partial discharge phenomenon.
Further, one end of the partial discharge component 3 is an electrode mounting seat 34, the other end of the partial discharge component 3 is a ground electrode mounting seat 35, and an oil-gas discharge special fitting 334 is arranged between the electrode mounting seat 34 and the ground electrode mounting seat 35.
Referring to fig. 9, the electrode mount 34, the special fitting 334 for gas discharge in oil, and the ground electrode mount 35 constitute an air gap discharge part, which is inserted into the B-phase air gap 14 or the C-phase air gap 15 by a push rod, so that the device has a characteristic of an air gap type partial discharge phenomenon.
Further, the partial discharge component 3 is provided with an inter-turn electricity-taking electrode 36, one end of the inter-turn electricity-taking electrode 36 is provided with a low-voltage winding N turn 37, and the other end of the inter-turn electricity-taking electrode 36 is provided with a low-voltage winding M turn 38.
Referring to fig. 10, an inter-turn electricity-taking electrode 36, a low-voltage winding N turn 37 and a low-voltage winding M turn 38 form a winding inter-turn discharge part, and the winding inter-turn discharge part is inserted into a phase b winding inter-turn opening 17 or a phase c winding inter-turn opening 18 through a push rod, so that the device has the characteristic of a winding inter-turn type partial discharge phenomenon.
The embodiments provided in the present application are only a few examples of the general concept of the present application, and do not limit the scope of the present application. Any other embodiments extended according to the scheme of the present application without inventive efforts will be within the scope of protection of the present application for a person skilled in the art.
Claims (8)
1. A built-in partial discharge defect simulation device is characterized by comprising an intelligent transformer (1), a push rod (2) and a partial discharge component (3);
the side surface of the intelligent transformer (1) is provided with a high-voltage release port and a low-voltage release port; the high-voltage partial discharge port comprises an A-phase surface port (11), an A-phase sharp port (12), a B-phase suspension port (13), a B-phase air gap port (14), a C-phase air gap port (15) and a C-phase oil gap port (16), and the low-voltage partial discharge port comprises a B-phase winding turn-to-turn port (17) and a C-phase winding turn-to-turn port (18);
the high-voltage partial discharge port is communicated with the lower ends of the high-voltage sleeves of all phases in the intelligent transformer (1);
the low-voltage partial discharge port is communicated with 3 cakes and 4 cakes of each low-voltage coil in the intelligent transformer (1);
a placing groove (4) is formed in the tail end of the push rod (2); the partial discharge component (3) is arranged in the placing groove (4);
when the push rod (2) is inserted into the high-voltage release port or the low-voltage release port, the built-in partial discharge defect simulation device is started; and when the push rod (2) is pulled out of the high-voltage release port or the low-voltage release port, the built-in partial discharge defect simulation device stops.
2. The built-in partial discharge defect simulator according to claim 1, wherein one end of the partial discharge component (3) is a low voltage electrode (31), the other end of the partial discharge component (3) is a high voltage electrode (32), and a conductive medium (33) is arranged between the low voltage electrode (31) and the high voltage electrode (32).
3. The built-in partial discharge defect simulation device according to claim 2, wherein the conductive medium (33) is an oil gap (331).
4. The built-in partial discharge defect simulation device according to claim 2, wherein the conductive medium (33) is a filling suspension discharge specific fitting (332).
5. The built-in partial discharge defect simulation device according to claim 2 or 3, wherein the high voltage electrode (32) is a pointed high voltage electrode (321).
6. The built-in partial discharge defect simulation device according to claim 2, wherein the conductive medium (33) is a fill creeping discharge dedicated fitting (333); the high-voltage electrode (32) is an edge high-voltage electrode (322).
7. The built-in partial discharge defect simulator according to claim 1, wherein one end of the partial discharge component (3) is an electrode mounting seat (34), the other end of the partial discharge component (3) is a ground electrode mounting seat (35), and a special oil-gas discharge fitting (334) is arranged between the electrode mounting seat (34) and the ground electrode mounting seat (35).
8. The built-in partial discharge defect simulation device according to claim 1, wherein the partial discharge part (3) is provided with an inter-turn electricity-getting electrode (36), one end of the inter-turn electricity-getting electrode (36) is provided with a low-voltage winding N turns (37), and the other end of the inter-turn electricity-getting electrode (36) is provided with a low-voltage winding M turns (38).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022253241.0U CN213210342U (en) | 2020-10-12 | 2020-10-12 | Built-in partial discharge defect simulation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022253241.0U CN213210342U (en) | 2020-10-12 | 2020-10-12 | Built-in partial discharge defect simulation device |
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| CN213210342U true CN213210342U (en) | 2021-05-14 |
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| CN202022253241.0U Active CN213210342U (en) | 2020-10-12 | 2020-10-12 | Built-in partial discharge defect simulation device |
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