CN215641633U - Composite insulator performance test platform for metal shielding type sleeve - Google Patents
Composite insulator performance test platform for metal shielding type sleeve Download PDFInfo
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- CN215641633U CN215641633U CN202122239113.5U CN202122239113U CN215641633U CN 215641633 U CN215641633 U CN 215641633U CN 202122239113 U CN202122239113 U CN 202122239113U CN 215641633 U CN215641633 U CN 215641633U
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- 239000002131 composite material Substances 0.000 title claims abstract description 121
- 239000012212 insulator Substances 0.000 title claims abstract description 121
- 239000002184 metal Substances 0.000 title claims abstract description 56
- 238000011056 performance test Methods 0.000 title claims abstract description 14
- 238000012360 testing method Methods 0.000 claims description 4
- 238000009413 insulation Methods 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009422 external insulation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
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Abstract
The utility model relates to the technical field of electricity, in particular to a composite insulator performance test platform for a metal shielding type sleeve, which comprises a metal shielding type sleeve, an indoor composite insulator and an outdoor composite insulator, wherein the indoor composite insulator and the outdoor composite insulator are respectively arranged at two ends of the metal shielding type sleeve, and an included angle between the indoor composite insulator and the metal shielding type sleeve and an included angle between the outdoor composite insulator and the metal shielding type sleeve are both larger than 90 degrees; the end parts of the indoor composite insulator and the outdoor composite insulator are respectively provided with a voltage-sharing cover; and the indoor composite insulator and the outdoor composite insulator are respectively provided with a temperature sensor, a vibration sensor and a stress sensor, and the temperature sensor, the vibration sensor and the stress sensor are connected with the controller. The purpose is that when the large environment temperature of the composite insulators for the two sleeves has large deviation, under the action of an externally applied voltage, the insulation performance and the flashover performance of the composite insulators for the sleeves can be contrastingly researched.
Description
Technical Field
The utility model belongs to the technical field of electricity, and particularly relates to a performance test platform for a composite insulator for a metal shielding type sleeve.
Background
The composite insulator is used in a large amount in an alternating current-direct current system transformer substation at present, comprises a composite insulator for a line, a composite insulator for electrical equipment such as a transformer substation sleeve and the like, has a nonlinear growth trend along with the rise of voltage class, and particularly has the typical characteristics of long insulation distance and large radial diameter for a composite insulator for a transmission line and a sleeve in 1000kV ultrahigh voltage alternating current and 800kV ultrahigh voltage direct current systems. At present, along with the proposal of a compact optimization design scheme of high-voltage power equipment, the composite insulator for the sleeve can effectively reduce the radial diameter by reasonably designing an internal capacitor core or a metal shielding structure optimization design scheme, and realize the compact design of larger length-diameter ratio. However, for the line composite insulator, no capacitance structure is provided for modulating voltage distribution, and the voltage type requirement can be met only by lengthening the clear distance of the composite insulator space. On the other hand, the insulation distance of the high-voltage composite insulator applied in a high-altitude area is further increased in a nonlinear manner. In the design of an insulating structure, the space clear distance length of the composite insulator is checked by introducing an altitude correction factor K. Therefore, for the characteristics of the surface voltage and the electric field distribution of the composite insulator for the ultra-long high-altitude line and the sleeve and the characteristics of the common composite insulator, the insulating property and the flashover property of the composite insulator need to be tested and researched through a special test platform.
SUMMERY OF THE UTILITY MODEL
The utility model provides a performance test platform for a composite insulator for a metal shielding type bushing, which is used for testing the insulating performance and the flashover performance of the composite insulator for a high-voltage line and a bushing.
The technical scheme adopted by the utility model is as follows: a composite insulator performance test platform for a metal shielding type sleeve comprises a metal shielding type sleeve, an indoor composite insulator and an outdoor composite insulator, wherein the indoor composite insulator and the outdoor composite insulator are respectively arranged at two ends of the metal shielding type sleeve, and an included angle between the indoor composite insulator and the metal shielding type sleeve and an included angle between the outdoor composite insulator and the metal shielding type sleeve are both larger than 90 degrees; the end parts of the indoor composite insulator and the outdoor composite insulator are respectively provided with a voltage-sharing cover; and the indoor composite insulator and the outdoor composite insulator are respectively provided with a temperature sensor, a vibration sensor and a stress sensor, and the temperature sensor, the vibration sensor and the stress sensor are connected with the controller.
Preferably, the included angle between the indoor composite insulator and the metal shielding type sleeve is equal to the included angle between the outdoor composite insulator and the metal shielding type sleeve, and the included angle is 110 degrees.
Preferably, the pressure equalizing cover is a multi-ring pressure equalizing cover, the multi-ring pressure equalizing cover is 5 stacked pressure equalizing rings, the 5 pressure equalizing rings are symmetrically arranged, and the diameter of the pressure equalizing ring positioned in the middle is the largest.
Preferably, the voltage-sharing cover is a double-ring voltage-sharing cover, and two voltage-sharing rings in the double-ring voltage-sharing cover have the same diameter.
Preferably, the voltage-sharing cover is an apple-shaped voltage-sharing cover, and the diameter of the apple-shaped voltage-sharing cover far away from one end of the metal shielding type sleeve is smaller than that of the apple-shaped voltage-sharing cover close to one end of the metal shielding type sleeve.
Preferably, a four-leg supporting table is arranged below the metal shielding type sleeve, and the four-leg supporting table provides supporting force for the metal shielding type sleeve, the indoor composite insulator and the outdoor composite insulator.
Preferably, the temperature, vibration and stress sensors disposed on the indoor composite insulator are located at the same positions as the temperature, vibration and stress sensors disposed on the outdoor composite insulator.
Preferably, the temperature, vibration and stress sensor is arranged on the outer side or the inner side of the indoor composite insulator.
The utility model has the advantages that: the included angle between the indoor composite insulator and the metal shielding type sleeve and the included angle between the outdoor composite insulator and the metal shielding type sleeve are both larger than 90 degrees, so that the mounting difficulty can be reduced, when the included angle is 110 degrees, the effective insulation distance between the outdoor composite insulator and a low potential body can be ensured, the mechanical performance requirement of the whole sleeve is not too high, and the support of the composite insulator can be effectively ensured; the temperature, vibration and stress sensors are arranged on the composite insulator, the sensors are required to be prepared in duplicate, each sensor is arranged at the same position of the composite insulator, the installation positions of the sensors can be selectively arranged outside the composite insulator or inside the composite insulator, and the temperature, vibration strength and stress values can be measured by the temperature, vibration and stress sensors, so that the performance of the composite insulator can be visually obtained, and the performance of the indoor and outdoor composite insulators can be conveniently compared.
Drawings
FIG. 1 is an embodiment of the present invention;
FIG. 2 is a second embodiment;
fig. 3 shows a third embodiment.
In the figure: 1-a metal shielded bushing; 2-indoor composite insulator; 3-outdoor composite insulator; 4-a multi-ring voltage-sharing cover; 5-double ring voltage-sharing cover; 6-apple type pressure equalizing cover.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
A composite insulator performance test platform for a metal shielding type sleeve comprises a metal shielding type sleeve 1, wherein the metal shielding type sleeve 1 is horizontally arranged along the ground, an indoor composite insulator 2 and an outdoor composite insulator 3 are arranged on the ground, and the indoor composite insulator 2 and the outdoor composite insulator 3 are respectively arranged at two ends of the metal shielding type sleeve 1; during the test, the indoor composite insulator 2 is in the artificial climate chamber, the outdoor composite insulator 3 is placed outdoors, and the temperature inside the artificial climate chamber can be adjusted at any temperature from minus 40 ℃ to 60 ℃, so that the indoor composite insulator 2 and the outdoor composite insulator 3 are in a larger temperature difference environment.
The contained angle between indoor composite insulator 2 and the metal shielded sleeve pipe 1, the contained angle between outdoor composite insulator 3 and the metal shielded sleeve pipe 1 all are greater than 90, the contained angle between preferred indoor composite insulator 2 and the metal shielded sleeve pipe 1 in this embodiment, the contained angle between outdoor composite insulator 3 and the metal shielded sleeve pipe 1 equals, all are 110, this angle can guarantee to develop the icing, the experiment of drenching with rain, can not also require too high to whole sheathed tube mechanical properties, can effectively guarantee the support to composite insulator.
In order to improve the flashover voltage of the bushing composite insulator, a voltage-sharing cover is required to be arranged at the end part for uniformly distributing the voltage along the composite insulator, and the voltage-sharing covers are respectively arranged at the end parts of the indoor composite insulator 2 and the outdoor composite insulator 3; in addition, the end part of the sleeve is provided with key structural components such as a wiring board, a confluence fitting, a tubular bus outgoing line and the like, and after the grading ring is installed at the end part of the sleeve, sharp corners and protrusions on the surface of the irregular conductor can be effectively shielded, so that corona discharge and external insulation flashover caused by corona discharge are inhibited.
And the indoor composite insulator 2 and the outdoor composite insulator 3 are respectively provided with a temperature sensor, a vibration sensor and a stress sensor, and the temperature sensor, the vibration sensor and the stress sensor are connected with a controller.
A four-foot supporting table is arranged below the metal shielding type sleeve 1 and provides supporting force for the metal shielding type sleeve 1, the indoor composite insulator 2 and the outdoor composite insulator 3. The metal shielding type sleeve 1, the indoor composite insulator 2 and the outdoor composite insulator 3 can be effectively supported through the four-pin supporting table, and the stability of the metal shielding type sleeve 1, the indoor composite insulator 2 and the outdoor composite insulator is kept.
The temperature, vibration and stress sensors arranged on the indoor composite insulator 2 are the same as the temperature, vibration and stress sensors arranged on the outdoor composite insulator 3 in position, namely the temperature sensors on the indoor composite insulator 2 are the same as the temperature sensors on the outdoor composite insulator 3 in position, and the vibration sensors on the indoor composite insulator 2 are the same as the vibration sensors on the outdoor composite insulator 3 in position. The temperature, vibration and stress sensors are arranged on the outer sides or the inner sides of the indoor composite insulator 2 and the outdoor composite insulator 3, and the positions are determined according to actual application conditions.
Example one
Based on the above structure, one embodiment of the equalizing cover is that, as shown in fig. 1, the equalizing cover is a multi-ring equalizing cover 4, the multi-ring equalizing cover 4 is 5 stacked equalizing rings, the 5 equalizing rings are symmetrically arranged, and the diameter of the equalizing ring in the middle is the largest. The 5 equalizing rings are arranged in a symmetrical structure, namely the diameter of the equalizing ring in the middle is the largest, the diameters of the equalizing rings from the middle to two sides are reduced in sequence, and the diameters of the equalizing rings corresponding to two sides of the intermediate equalizing ring are the same.
The installation of the multi-ring equalizing shield 4 can make the position of the maximum field intensity appear to be transferred to the middle part of the equalizing shield (the maximum diameter equalizing ring at the middle part).
Example two
The difference from the above embodiment is that the second embodiment of the equalizing cover is a double-ring equalizing cover 5, and as shown in fig. 2, the diameters of two equalizing rings in the double-ring equalizing cover 5 are equivalent.
EXAMPLE III
The difference from the above embodiment is that the third implementation mode of the voltage-sharing cover is that the voltage-sharing cover is an apple-type voltage-sharing cover 6, as shown in fig. 3, the diameter of the end of the apple-type voltage-sharing cover 6 far away from the metal shielding type sleeve 1 is smaller than the diameter of the end close to the metal shielding type sleeve 1.
The apple-shaped voltage-sharing cover 6 can completely cover the confluence hardware fitting in a low field intensity area, and the electric field on the surface of the voltage-sharing cover is uniformly distributed.
The further technical scheme is that an open large umbrella structure and a small umbrella structure are adopted in the umbrella-shaped structures on the outer side walls of the indoor composite insulator 2 and the outdoor composite insulator 3, namely large umbrellas and small umbrellas are arranged in a staggered mode, the distance between the large umbrellas is 55mm, and the ratio of the width of each large umbrella to the distance between the adjacent large umbrellas is 0.91.
The above-mentioned embodiments are preferred embodiments, it should be noted that the above-mentioned preferred embodiments should not be considered as limitations to the utility model, and the scope of protection of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the utility model, and these modifications and adaptations should be considered within the scope of the utility model.
Claims (8)
1. The utility model provides a composite insulator capability test platform for metal shielded bushing, includes metal shielded bushing (1), indoor composite insulator (2) and outdoor composite insulator (3), install the both ends at metal shielded bushing (1) respectively with outdoor composite insulator (3) indoor composite insulator (2), its characterized in that: the included angle between the indoor composite insulator (2) and the metal shielding type sleeve (1) and the included angle between the outdoor composite insulator (3) and the metal shielding type sleeve (1) are both larger than 90 degrees; the end parts of the indoor composite insulator (2) and the outdoor composite insulator (3) are respectively provided with a voltage-sharing cover; and the indoor composite insulator (2) and the outdoor composite insulator (3) are respectively provided with a temperature sensor, a vibration sensor and a stress sensor, and the temperature sensor, the vibration sensor and the stress sensor are connected with a controller.
2. The composite insulator performance test platform for the metal shielding type bushing according to claim 1, wherein: the included angle between the indoor composite insulator (2) and the metal shielding type sleeve (1) is equivalent to the included angle between the outdoor composite insulator (3) and the metal shielding type sleeve (1), and the included angle is 110 degrees.
3. The composite insulator performance test platform for the metal shielding type bushing according to claim 1 or 2, wherein: the pressure equalizing cover is a multi-ring pressure equalizing cover (4), the multi-ring pressure equalizing cover (4) is 5 pressure equalizing rings stacked, the 5 pressure equalizing rings are symmetrically arranged, and the diameter of the pressure equalizing ring positioned in the middle is the largest.
4. The composite insulator performance test platform for the metal shielding type bushing according to claim 1 or 2, wherein: the voltage-sharing cover is a double-ring voltage-sharing cover (5), and the diameters of two voltage-sharing rings in the double-ring voltage-sharing cover (5) are equivalent.
5. The composite insulator performance test platform for the metal shielding type bushing according to claim 1 or 2, wherein: the voltage-sharing cover is an apple-shaped voltage-sharing cover (6), and the diameter of one end, far away from the metal shielding type sleeve (1), of the apple-shaped voltage-sharing cover (6) is smaller than the diameter of one end, close to the metal shielding type sleeve (1).
6. The composite insulator performance test platform for the metal shielding type bushing according to claim 1, wherein: the four-foot support platform is arranged below the metal shielding type sleeve (1) and provides support force for the metal shielding type sleeve (1), the indoor composite insulator (2) and the outdoor composite insulator (3).
7. The composite insulator performance test platform for the metal shielding type bushing according to claim 1, wherein: the temperature, vibration and stress sensors arranged on the indoor composite insulator (2) are the same as the temperature, vibration and stress sensors arranged on the outdoor composite insulator (3).
8. The composite insulator performance test platform for the metal shielding type bushing according to claim 7, wherein: the temperature, vibration and stress sensor is arranged on the outer side or the inner side of the indoor composite insulator (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122239113.5U CN215641633U (en) | 2021-09-15 | 2021-09-15 | Composite insulator performance test platform for metal shielding type sleeve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122239113.5U CN215641633U (en) | 2021-09-15 | 2021-09-15 | Composite insulator performance test platform for metal shielding type sleeve |
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| CN215641633U true CN215641633U (en) | 2022-01-25 |
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| CN202122239113.5U Active CN215641633U (en) | 2021-09-15 | 2021-09-15 | Composite insulator performance test platform for metal shielding type sleeve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117273323A (en) * | 2023-09-15 | 2023-12-22 | 国网江苏省电力有限公司南通供电分公司 | Digital twinning-based power equipment management method and system |
-
2021
- 2021-09-15 CN CN202122239113.5U patent/CN215641633U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117273323A (en) * | 2023-09-15 | 2023-12-22 | 国网江苏省电力有限公司南通供电分公司 | Digital twinning-based power equipment management method and system |
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