CN220671506U - Arc grounding device for analog circuit - Google Patents

Abstract

The utility model relates to an arc grounding device of an analog circuit, which comprises an adjusting component and a testing component, wherein the adjusting component comprises a mounting platform and a driving piece arranged on the mounting platform, the testing component comprises a high-voltage part, a grounding part and a conducting part, the high-voltage part is arranged on the mounting platform, the grounding part is arranged on the center of the output upper end of the driving piece, the conducting part is arranged between the mounting platform and the driving piece and is connected with the grounding part, the position of the grounding part below the high-voltage part can be adjusted in a rotating mode through the cooperation of the driving piece and the grounding part, the discharge condition of the grounding part and the high-voltage part under different conditions is performed, the arc grounding fault is simulated, the operation is simple and easy to realize, the single-phase arc grounding fault of a distribution circuit can be simulated, the response condition of the built system protection and detection device can be tested, and the fault research treatment is performed in real time.

Description

Arc grounding device for analog circuit

Technical Field

The utility model relates to the field of high-voltage power distribution fault tests, in particular to an arc grounding device for an analog circuit.

Background

According to the statistical analysis of the domestic power system, single-phase earth faults account for about eight times of faults of the power distribution network, wherein the arc earth faults account for a very large part, the earth faults do not take measures in time, equipment damage can be caused, the safe operation of the power distribution network system is destroyed, a true/simulation line or a simulation test platform is generally adopted at present to conduct test research on the single-phase earth faults of the power distribution network, and a simulation single-phase earth fault test device is one of the necessary test modules.

The prior single-phase earth fault simulation test module has more constituent units, is troublesome to operate, and meanwhile, a simulation test platform cannot be correspondingly adjusted in a test condition to distinguish single-phase earth faults and is unfavorable for the research of fault processing modes.

Disclosure of Invention

Based on the expression, the utility model provides the simulated line arc grounding device to solve the problems that the single-phase grounding fault simulation test platform has more constituent equipment and is troublesome to operate, and meanwhile, the simulation test platform cannot be correspondingly adjusted to a test condition to distinguish single-phase grounding faults and is unfavorable for the research of fault processing modes.

The technical scheme for solving the technical problems is as follows:

an analog line arc grounding apparatus comprising:

the adjusting assembly comprises a mounting platform and a driving piece arranged on the mounting platform;

a test assembly including a high voltage portion, a ground portion, and a conductive portion, wherein,

a high-pressure portion provided on the mounting platform;

a grounding part arranged on the center of the output upper end of the driving piece;

and the conductive part is arranged between the mounting platform and the driving piece and is connected with the grounding part.

On the basis of the technical scheme, the utility model can be improved as follows.

Further, the high-voltage part comprises an insulating bracket arranged on the mounting platform and a plurality of high-voltage electrodes arranged on the insulating bracket.

Further, the grounding part comprises an insulating rotary disc arranged at the center of the output upper end of the driving piece and a plurality of grounding pieces annularly distributed on the insulating rotary disc.

Further, an insulating shaft is arranged at the output end of the driving piece, and the insulating turntable is arranged on the insulating shaft.

Further, the insulating turntable is positioned below the insulating bracket, and the high-voltage electrode corresponds to the grounding piece up and down.

Further, the grounding piece is composed of a conductive column and a grounding electrode, and the grounding electrode is arranged on the insulating turntable through the conductive column.

Further, the conductive part comprises a plurality of conductive rings arranged on the insulating shaft and conductive carbon brushes arranged on the mounting platform, and the conductive rings are arranged below the insulating turntable from top to bottom.

Further, the conductive column is electrically connected with the conductive ring, and one end of the conductive carbon brush is close to the conductive ring.

Compared with the prior art, the technical scheme of the application has the following beneficial technical effects:

according to the utility model, the adjusting component and the testing component are arranged, the position of the grounding part below the high-voltage part can be adjusted in a rotating manner through the matching of the driving component and the grounding part, the discharge conditions of the grounding part and the high-voltage part under different live conditions are carried out, the arc grounding fault is simulated, the operation is simple and easy to implement, the single-phase arc grounding fault of the distribution line is simulated, the response conditions of the built system protection and detection device can be tested, and the real-time fault research and treatment are carried out.

Drawings

Fig. 1 is a schematic structural diagram of an arc grounding device with an analog circuit according to an embodiment of the present utility model;

FIG. 2 is a schematic view of the structure of FIG. 1 from another perspective;

FIG. 3 is a schematic diagram of a test assembly according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram of circuit connection of a test assembly according to an embodiment of the present utility model;

in the drawings, the list of components represented by the various numbers is as follows:

1. an adjustment assembly; 11. a mounting platform; 12. a driving member; 2. a testing component; 21. a high pressure section; 211. an insulating support; 212. a high voltage electrode; 22. a grounding part; 221. an insulating turntable; 222. a grounding member; 23. a conductive portion; 231. a conductive ring; 232. a conductive carbon brush; 3. a vacuum circuit breaker; 4. a high-power resistor; 5. a current transformer; 6. a voltage transformer; 7. the high power resistor may be tuned.

Detailed Description

In order to facilitate an understanding of the present application, a more complete description of the present application will now be provided with reference to the relevant figures. Examples of the present application are given in the accompanying drawings. This application may, however, be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

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. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

It will be appreciated that spatially relative terms such as "under … …," "under … …," "below," "under … …," "over … …," "above," and the like may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use and operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements or features described as "under" or "beneath" other elements would then be oriented "on" the other elements or features. Thus, the exemplary terms "under … …" and "under … …" may include both an upper and a lower orientation. Furthermore, the device may also include an additional orientation (e.g., rotated 90 degrees or other orientations) and the spatial descriptors used herein interpreted accordingly.

Referring to fig. 1-4, an arc grounding device for a simulated circuit comprises an adjusting component 1 and a testing component 2, wherein the adjusting component 1 comprises a mounting platform 11, a driving part 12 is arranged on the mounting platform 11, the testing component 2 comprises a high-voltage part 21 arranged on the mounting platform 11, a grounding part 22 is arranged on the center of the output upper end of the driving part 12, and a conductive part 23 connected with the grounding part 22 is arranged between the mounting platform 11 and the driving part 12.

Based on the above, the simulated line arc grounding device is used as a test module, and forms a ground fault simulation test device with the vacuum circuit breaker 3, the high-power resistor 4, the current transformer 5, the voltage transformer 6 and the adjustable high-power resistor 7, one end of the vacuum circuit breaker 3 is connected with one phase of the test line through a high-voltage insulation wire and a lap joint fitting, the other end of the vacuum circuit breaker 3 is connected with one end of the adjustable high-power resistor 7, the other end of the adjustable high-power resistor 7 is connected with the high-voltage part 21 of the simulated arc discharge device, and the grounding part 22 of the simulated arc discharge device is connected with the current transformer 5 through an insulation wire and then grounded;

the parallel connection of the vacuum circuit breaker 3 and the high-power resistor 4 can adjust two ends of the high-power resistor 7, which is used for simulating the direct short-circuit grounding condition of an arc, the voltage transformer 6 collects the voltage to the ground on the line between the vacuum circuit breaker 3 and the high-power resistor 7, and the current transformer 5 collects the line current passing through the simulated arc discharge device.

The grounding part 22 is driven to rotate by the driving piece 12, and the position between the grounding part 22 and the high-voltage part 21 is adjusted, so that the gap between the grounding part 22 and the high-voltage part 21 is changed, and then arc grounding faults are simulated under different conditions, the operation is simple and easy, and the real-time fault research and treatment can be realized.

Referring to fig. 1-3, the high voltage portion 21 includes an insulating support 211 disposed on the mounting platform 11 and a plurality of high voltage electrodes 212 disposed on the insulating support 211, the grounding portion 22 includes an insulating rotary plate 221 disposed on a center of an output upper end of the driving member 12 and a plurality of grounding members 222 annularly distributed on the insulating rotary plate 221, an insulating shaft is disposed on an output end of the driving member 12, the insulating rotary plate 221 is disposed on the insulating shaft, the insulating rotary plate 221 is located below the insulating support 211, the high voltage electrodes 212 vertically correspond to the grounding members 222, the grounding members 222 are composed of conductive columns and grounding electrodes, and the grounding electrodes are disposed on the insulating rotary plate 221 through the conductive columns.

Based on the position between the ground part 22 and the high voltage part 21, the high voltage electrodes 212 are supported on the insulating rotary table 221 by the insulating support 211, and the high voltage electrodes 212 with two groups are arranged along the insulating support 211, while the ground electrodes on the insulating rotary table 221 can be correspondingly arranged at the west of the high voltage electrodes 212 by arranging the inner ring and the outer ring, the number of the uniformly arranged inner ring is twelve ground electrodes, and the number of the unevenly arranged inner ring is three to nine ground electrodes.

After the circuit connection is completed, an outer ring grounding electrode or an inner ring grounding electrode is selected and then fixed, the speed regulating synchronous motor is not started, and only the relative position between the high-voltage electrode and the grounding electrode is adjusted, so that the common non-intermittent stable arc grounding fault can be simulated;

by adjusting the positions of the ground electrode and the high voltage electrode 212 on the insulating turntable 221 and the speed passing through the high voltage electrode 212 by driving the driving member 12, which is preferably an adjustable synchronous motor, ground faults such as single-pole discharge, bipolar discharge, arc discharge under incomplete arc extinction, arc discharge influenced by complex conditions such as arc length, breakdown phase and the like are simulated.

Referring to fig. 1-4, the conductive portion 23 includes a plurality of conductive rings 231 disposed on the insulating shaft and conductive carbon brushes 232 disposed on the mounting platform 11, the conductive rings 231 are disposed below the insulating turntable 221 from top to bottom, the conductive columns are electrically connected to the conductive rings 231, and one end of each conductive carbon brush 232 is close to the conductive ring 231.

In the above-mentioned analog arc grounding device, as a test module, a conductive carbon brush 232 on an insulating turntable 221 is connected with one end of a current transformer 5, and the conductive column is connected to an upper conductive ring 231 and a lower conductive ring 231 through conductive sheets, and cooperates with the current transformer 5 to collect the line current passing through the analog arc discharge device.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims (8)

1. An analog circuit arc grounding device is characterized by comprising

An adjustment assembly (1) comprising a mounting platform (11) and a driving member (12) arranged on the mounting platform (11);

a test assembly (2) comprising a high voltage portion (21), a ground portion (22) and a conductive portion (23), wherein,

a high-pressure part (21) provided on the mounting platform (11);

a grounding part (22) arranged on the center of the output upper end of the driving piece (12);

and a conductive part (23) which is provided between the mounting platform (11) and the driving element (12) and is connected to the grounding part (22).

2. The simulated line arc grounding apparatus of claim 1, wherein the high voltage portion (21) comprises an insulating bracket (211) disposed on the mounting platform (11) and a plurality of high voltage electrodes (212) disposed on the insulating bracket (211).

3. The arc grounding device for an analog circuit according to claim 2, wherein the grounding part (22) comprises an insulating rotary disk (221) arranged on the center of the output upper end of the driving member (12) and a plurality of grounding members (222) annularly distributed on the insulating rotary disk (221).

4. A simulated line arc grounding apparatus as claimed in claim 3, wherein said drive member (12) is provided with an insulating shaft at an output end thereof, said insulating turntable (221) being provided on said insulating shaft.

5. The arc grounding device for an analog circuit according to claim 4, wherein the insulating turntable (221) is located below the insulating bracket (211), and the high voltage electrode (212) corresponds to the grounding member (222) vertically.

6. The simulated line arc grounding device of claim 5, wherein the grounding member (222) is comprised of a conductive post and a ground electrode disposed on the insulating turntable (221) through the conductive post.

7. The arc grounding device according to claim 6, wherein the conductive portion (23) comprises a plurality of conductive rings (231) disposed on the insulating shaft and conductive carbon brushes (232) disposed on the mounting platform (11), and the conductive rings (231) are arranged below the insulating turntable (221) from top to bottom.

8. The arc grounding device according to claim 7, wherein the conductive post is electrically connected to the conductive ring (231), and one end of the conductive carbon brush (232) is close to the conductive ring (231).