CN113690824B - An electrical fitting for increasing corona voltage by reducing the possibility of condensation - Google Patents
An electrical fitting for increasing corona voltage by reducing the possibility of condensation Download PDFInfo
- Publication number
- CN113690824B CN113690824B CN202110915312.5A CN202110915312A CN113690824B CN 113690824 B CN113690824 B CN 113690824B CN 202110915312 A CN202110915312 A CN 202110915312A CN 113690824 B CN113690824 B CN 113690824B
- Authority
- CN
- China
- Prior art keywords
- coating
- fitting
- hydrophilic
- electric power
- power fitting
- 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.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
Landscapes
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
本发明提供了一种通过降低凝露可能性以提升电晕电压的电力金具，该电力金具的外表面设有表面涂层，并且，所述表面涂层内设有亲水性纤维颗粒，所述表面涂层以及所述亲水性纤维颗粒用于加快过饱和水汽在所述电力金具表面凝结时扩散成水膜的速度，以阻止所述电力金具在高湿度下的凝露环境下形成大液滴而导致发生明显电晕。本发明通过在电力金具表面设置的表面涂层，在表面涂层和亲水性纤维颗粒作用下，加快过饱和水汽在金具表面凝结时尽快扩散成水膜，使得空气中的过饱和水蒸气在电力金具表面凝结形成水膜，防止电力金具在高湿度下的凝露形成大液滴以降低高湿度条件下金具凝露形成大水滴的可能性，避免大液滴导致发生明显电晕。
The present invention provides an electric fitting that increases the corona voltage by reducing the possibility of condensation. The outer surface of the electric fitting is provided with a surface coating, and the surface coating is provided with hydrophilic fiber particles. The surface coating and the hydrophilic fiber particles are used to accelerate the speed at which supersaturated water vapor diffuses into a water film when condensing on the surface of the electric fitting, so as to prevent the electric fitting from forming large droplets in a condensation environment under high humidity and causing obvious corona. The present invention accelerates the diffusion of supersaturated water vapor into a water film as soon as possible when condensing on the surface of the fitting by the surface coating and the hydrophilic fiber particles, so that the supersaturated water vapor in the air condenses to form a water film on the surface of the electric fitting, preventing the electric fitting from condensing under high humidity from forming large droplets, thereby reducing the possibility of the fitting from condensing under high humidity conditions to form large droplets, and avoiding the occurrence of obvious corona caused by large droplets.
Description
Technical Field
The invention relates to the technical field of electric power fittings, in particular to an electric power fitting capable of improving corona voltage by reducing condensation possibility.
Background
In the south China, the climates are moist, high humidity weather such as small rain, fog and the like frequently occurs in places such as Hubei, jiangsu and the like, the average relative humidity often exceeds 70 percent, particularly, the climate conditions of coexistence of high temperature and high humidity (hot fog, water drops) during the seasons of July to July plum rain each year and the water molecule content of surrounding air is increased in the large fog (cold fog) weather with higher relative humidity in winter and early spring, the breakdown strength of air can be reduced, the electric power fitting is easy to generate visible corona, particularly, the visible corona is obviously increased when the electric power fitting feels better weather of corona noise in a transformer substation, and the visible corona can be observed on part of the electric power fitting. Particularly, the air humidity is often kept above 90% near a condensing tower of a direct current station, and the nearby electric power fittings are extremely prone to condensation, so that the possibility of corona is extremely high.
Through the corona onset voltage test of the typical electrode under different relative humidity conditions, test results show that the corona onset voltage is gradually reduced along with the increase of the relative humidity within the range of 30% -70%, and the corona onset voltage is less reduced along with the increase of the relative humidity when the relative humidity is higher than 70%. In the test process, when the relative humidity reaches a certain degree and the temperature is reduced to a certain threshold value, the surface of the voltage equalizing ball can form condensation, and in the test process, the two states of condensation and non-condensation have great influence on the corona discharge of the electrode under the same humidity condition. The electric field distortion is most serious at the moment of condensation dripping, which is caused by each stage of condensation generation. The test results show that the presence and absence of the condensation has an important effect on the corona onset voltage on the surface of the ball electrode, and the corona onset voltage is reduced by 29.6-48.8% compared with that of the non-condensation when the condensation is generated, which indicates that the effect of the condensation on the corona of the electric power fitting is very important.
Therefore, in order to improve the visible corona voltage of the electric power fitting, reduce the corona risk of the electric power fitting in a high humidity environment, and reduce condensation water drops, the electric power fitting has a very important role.
Disclosure of Invention
In view of this, the invention provides an electric power fitting for raising corona voltage by reducing condensation possibility, which aims to raise visible corona voltage of the electric power fitting, reduce corona risk of the electric power fitting in high humidity environment and reduce condensation water drops.
The invention provides an electric power fitting for improving corona voltage by reducing condensation possibility, wherein the outer surface of the electric power fitting is provided with a surface coating, hydrophilic fiber particles are arranged in the surface coating, and the surface coating and the hydrophilic fiber particles are used for accelerating the speed of supersaturated water vapor diffusing into a water film when the surface of the electric power fitting is condensed so as to prevent the electric power fitting from forming large liquid drops under the condensation environment under high humidity to cause obvious corona.
Further, the electric power fitting for improving corona voltage by reducing condensation possibility is characterized in that the surface coating is of a single-layer structure and is a hydrophilic coating.
Further, the electric power fitting can raise corona voltage by reducing condensation possibility, and the hydrophilic coating is an epoxy resin coating containing hydrophilic groups.
Further, the electric power fitting can raise corona voltage by reducing condensation possibility, and the hydrophilic group is one or two of polydiethanol and polydiglycolamine.
Further, the electric power fitting can raise corona voltage by reducing condensation possibility, and the hydrophilic coating is a hydrophilic insulator coating or a hydrophilic semiconductor coating.
Further, the electric power fitting for increasing corona voltage by reducing condensation possibility is characterized in that the surface coating is of a double-layer structure and comprises a hydrophilic coating and an insulating coating.
Further, the electric power fitting can raise corona voltage by reducing condensation possibility, and the hydrophilic fiber particles are one or two of glass fiber particles and natural fiber particles.
Further, the electric power fitting for improving corona voltage by reducing condensation possibility is provided, and the surface coating is 1mm.
Further, the electric power fitting for improving corona voltage by reducing condensation possibility has the advantages that the distribution density of hydrophilic fiber particles in the surface coating at the corners of the electric power fitting is greater than that of hydrophilic fiber particles in the surface coating at the connecting surface of the electric power fitting, and the connecting surface is a plane or a curved surface.
Further, the electric power fitting for improving corona voltage by reducing condensation possibility is an anti-corona fitting.
According to the electric power fitting for improving corona voltage by reducing condensation possibility, the surface coating is coated on the surface of the electric power fitting, hydrophilic fiber particles are arranged in the surface coating, so that supersaturated water vapor is quickened to diffuse into a water film when the surface of the electric power fitting is condensed under the action of the surface coating and the hydrophilic fiber particles, the supersaturated water vapor in air is condensed on the surface of the electric power fitting to form the water film, the condensation of the electric power fitting under high humidity is prevented from forming large liquid drops to reduce the possibility that the electric power fitting is condensed into large liquid drops under the high humidity condition, the phenomenon that the large liquid drops cause obvious corona is avoided, and therefore the corona risk of the electric power fitting under the high humidity environment is reduced, meanwhile, the hydrophilic fiber particles also form a water absorption structure, the height of the water drops is guaranteed to be reduced, namely the thickness of the water film is reduced, and the electric power fitting is prevented from being too thick to cause corona sites. In addition, the surface coating has a certain thickness, has certain abrasion resistance and impact resistance, and can prevent the electric power fitting from being scratched and deformed in transportation and installation, thereby further resisting corona capability.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
fig. 1 is a schematic structural diagram of an electric power fitting for raising corona voltage by reducing condensation possibility according to an embodiment of the present invention;
FIG. 2 is a schematic view of the structure between a surface coating and hydrophilic fiber particles provided by an embodiment of the present invention;
Fig. 3 is a schematic view of another structure of the surface coating according to the embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
Referring to fig. 1 to 2, preferred structures of the power fitting for raising corona voltage by reducing the possibility of condensation according to the embodiments of the present invention are shown. As shown in the drawing, the liquid crystal display device,
The surface coating 2 is arranged on the outer surface of the electric power fitting 1 and used for accelerating the speed of diffusing supersaturated water vapor into a water film when the surface of the electric power fitting 1 is condensed, so that large liquid drops are prevented from being formed under the condensation environment of the electric power fitting 1 under high humidity, obvious corona is caused, namely the possibility that the electric power fitting 1 is condensed into large liquid drops under the high humidity condition is reduced, and the visible corona voltage of the electric power fitting 1 under special conditions is improved. Meanwhile, the surface coating 2 has a certain thickness, has certain abrasion resistance and impact resistance, and can prevent the electric power fitting 1 from being scratched and deformed in transportation and installation, thereby further resisting corona.
Hydrophilic fiber particles 3 are arranged in the surface coating 2, namely, the hydrophilic fiber particles are mixed in the surface coating 2, that is, the hydrophilic fiber particles are mixed in the coating of the surface coating 2, so that the water film diffusion speed is further improved, a water absorption structure is formed, and the height of water drops is guaranteed to be reduced. Under the action of the surface coating 2 and the hydrophilic fiber particles 3, supersaturated water vapor in the air is condensed on the surface of the electric power fitting 1 to form a water film with the thickness not exceeding 1mm, so that the possibility that the electric power fitting 1 is condensed to form large water drops under the high humidity condition is reduced, and the corona risk of the electric power fitting 1 under the high humidity environment is reduced. Meanwhile, the hydrophilic fiber particles 3 also form a water absorption structure, so that the height of water drops is reduced, namely the thickness of a water film is reduced to be not more than 1mm, and the situation that the water film is too thick to cause corona sites to occur in the electric power fitting 1 is avoided.
In one implementation manner of this embodiment, the surface coating 2 is a single-layer structure, which may be a hydrophilic coating, so as to achieve that supersaturated water vapor diffuses into a water film as soon as possible when the surface of the electric power fitting 1 condenses, so that the possibility of condensation on the surface of the electric power fitting 1 in a high humidity environment can be reduced, and the corona voltage of the electric power fitting 1 can be improved. Preferably, the hydrophilic coating may be a hydrophilic insulator coating or a hydrophilic semiconductor coating, further improving the insulation strength of the surface of the power fitting 1, thereby further reducing the corona risk of the power fitting surface. The hydrophilic coating can be an epoxy resin coating containing hydrophilic groups, so that the corona voltage of the electric power fitting 1 can be improved, meanwhile, the epoxy resin has certain mechanical strength, has certain thickness as a coating base material, has certain abrasion resistance and impact resistance, and can be prevented from being scratched and deformed in transportation and installation, so that the corona resistance is further provided. The epoxy resin may be an epoxy resin having insulating properties. Wherein the hydrophilic group can be polydiethanol, polydiglycolamine, or other hydrophilic groups.
In another implementation manner of the embodiment, as shown in fig. 3, the surface coating 2 has a double-layer structure, and includes a hydrophilic coating 21 and an insulating coating 22, wherein the insulating coating 22 is disposed on the outer surface of the electric power fitting 1, and the hydrophilic coating 21 is coated on the outer surface of the insulating coating 22. The insulating coating 22 may be an insulator or a semiconductor, and may be welded or otherwise fixedly connected to the outer surface of the electric power fitting 1, or may be sprayed on the outer surface of the electric power fitting 1, and the hydrophilic coating 21 may be an epoxy resin coating containing hydrophilic groups, which may be coated on the outer surface of the insulating coating 22, so that not only the corona voltage of the electric power fitting 1 may be raised, but also the epoxy resin has a certain mechanical strength, and has a certain thickness as a coating substrate, and has a certain abrasion resistance and impact resistance, so that the electric power fitting is prevented from being scratched and deformed during transportation and installation, thereby further providing corona resistance. The epoxy resin may be an epoxy resin having insulating properties.
In the above embodiments, the hydrophilic fiber particles 3 may be uniformly arranged in the surface coating 2, or may be distributed according to the specific structure of the electric power tool, for example, the hydrophilic fiber particles 3 in the surface coating 2 may be distributed at a position where they are likely to be condensed to form large water droplets, for example, the hydrophilic fiber particles 3 in the surface coating 2 may be distributed at a corner with a higher density than the hydrophilic fiber particles 3 in the surface coating 2, and the connection surface may be a plane or a curved surface. The hydrophilic fiber particles 3 may be one or two of glass fiber particles and natural fiber particles, that is, at least one of glass fiber particles and natural fiber particles may be mixed in the surface coating 2, and the hydrophilic fiber particles 3 may be glass fiber particles or natural fiber particles, or may be a mixture formed by combining glass fiber particles and natural fiber particles.
In each of the above embodiments, the thickness of the surface coating 2 is less than or equal to 1mm.
In this embodiment, the power fitting 1 may be an anti-corona power fitting, such as a grading ring, a shielding ring, or the like.
In summary, the electric power fitting for improving corona voltage by reducing condensation possibility is provided in this embodiment, through the surface coating 2 disposed on the surface of the electric power fitting 1, hydrophilic fiber particles 3 are disposed in the surface coating 2, so that supersaturated water vapor is accelerated to diffuse into a water film when the surface of the electric power fitting is condensed under the action of the surface coating 2 and the hydrophilic fiber particles 3, so that supersaturated water vapor in air is condensed on the surface of the electric power fitting 1 to form a water film, condensation of the electric power fitting 1 under high humidity is prevented from forming large droplets to reduce the possibility that the electric power fitting condensation forms large water drops under high humidity, and further, the phenomenon that the large droplets cause obvious corona is avoided, thereby reducing the electric power fitting corona risk under high humidity environment, and meanwhile, the hydrophilic fiber particles 3 also form a water absorption structure, so as to ensure that the height of water drops is reduced, namely, the thickness of the water film is reduced, so that the electric power fitting 1 has corona on site. In addition, the surface coating 2 has a certain thickness, has certain abrasion resistance and impact resistance, and can prevent the electric power fitting 1 from being scratched and deformed in transportation and installation, thereby further resisting corona.
It should be noted that, in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In addition, it should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, or may be directly connected, or may be indirectly connected through an intermediate medium, or may be in communication with the inside of two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (9)
1. An electric power fitting for raising corona voltage by reducing condensation possibility is characterized in that,
The surface coating is arranged on the outer surface of the electric power fitting, hydrophilic fiber particles are arranged in the surface coating, and the surface coating and the hydrophilic fiber particles are used for accelerating the speed of supersaturated water vapor diffusing into a water film when the surface of the electric power fitting is coagulated, so that the electric power fitting is prevented from forming large liquid drops in a condensation environment under high humidity to cause obvious corona;
The distribution density of hydrophilic fiber particles in the surface coating at the corner of the electric power fitting is greater than that of hydrophilic fiber particles in the surface coating at the connecting surface of the electric power fitting, wherein the connecting surface is a plane or a curved surface.
2. The power fitting for elevating corona voltage by reducing the possibility of condensation according to claim 1, wherein,
The surface coating is of a single-layer structure and is a hydrophilic coating.
3. The fitting for elevating corona voltage by reducing the likelihood of condensation according to claim 2, wherein said hydrophilic coating is an epoxy coating containing hydrophilic groups.
4. The fitting for elevating corona voltage by reducing the likelihood of condensation according to claim 3, wherein said hydrophilic group is one or both of polydiethanol and polydiglycolamine.
5. The power fitting for raising corona voltage by reducing the possibility of condensation according to claim 2, wherein,
The hydrophilic coating is a hydrophilic insulator coating or a hydrophilic semiconductor coating.
6. The power fitting for elevating corona voltage by reducing the possibility of condensation according to claim 1, wherein,
The surface coating is a double-layer structure, and comprises a hydrophilic coating and an insulating coating.
7. The fitting for elevating corona voltage by reducing the likelihood of condensation according to any one of claims 1 to 6, wherein the hydrophilic fiber particles are one or both of glass fiber particles and natural fiber particles.
8. The fitting for raising corona voltage by reducing the likelihood of condensation according to any one of claims 1 to 6, wherein said surface coating is 1mm.
9. The power fitting for raising corona voltage by reducing the possibility of condensation according to any one of claims 1 to 6, wherein said power fitting is an anti-corona fitting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110915312.5A CN113690824B (en) | 2021-08-10 | 2021-08-10 | An electrical fitting for increasing corona voltage by reducing the possibility of condensation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110915312.5A CN113690824B (en) | 2021-08-10 | 2021-08-10 | An electrical fitting for increasing corona voltage by reducing the possibility of condensation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113690824A CN113690824A (en) | 2021-11-23 |
| CN113690824B true CN113690824B (en) | 2024-12-20 |
Family
ID=78579742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110915312.5A Active CN113690824B (en) | 2021-08-10 | 2021-08-10 | An electrical fitting for increasing corona voltage by reducing the possibility of condensation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113690824B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105339373A (en) * | 2013-05-08 | 2016-02-17 | 道康宁公司 | Hydrophilic organosilanes |
| CN110853844A (en) * | 2019-11-18 | 2020-02-28 | 国网重庆市电力公司电力科学研究院 | Method and device for noise reduction of corona audible noise in transmission lines |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR9907692A (en) * | 1998-02-05 | 2000-11-14 | Empa St Gallen Eidgenoessische | Polar polymer-like coating |
| CN106232696B (en) * | 2014-04-24 | 2020-06-05 | 3M创新有限公司 | Fluid control films having hydrophilic surfaces, methods of making the same, and methods for cleaning structured surfaces |
-
2021
- 2021-08-10 CN CN202110915312.5A patent/CN113690824B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105339373A (en) * | 2013-05-08 | 2016-02-17 | 道康宁公司 | Hydrophilic organosilanes |
| CN110853844A (en) * | 2019-11-18 | 2020-02-28 | 国网重庆市电力公司电力科学研究院 | Method and device for noise reduction of corona audible noise in transmission lines |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113690824A (en) | 2021-11-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11596975B2 (en) | Water repellent coating film and product provided with same | |
| CN102070907A (en) | Silicone rubber for composite insulator and preparation method thereof | |
| CN107418147B (en) | A kind of hydrophobic electrical insulating epoxy resin composition | |
| CN113690824B (en) | An electrical fitting for increasing corona voltage by reducing the possibility of condensation | |
| CN102351433B (en) | Preparation method for solar power encapsulation glass reflection reducing coating with high mechanical strength and self-cleaning capacity | |
| CN103155168A (en) | Solar cell and paste composition for rear electrode of the same | |
| CN104393081B (en) | A kind of waterproof solar cell panel notacoria and preparation method thereof | |
| CN105802240A (en) | Silicone rubber composite material for composite insulator | |
| US10753591B2 (en) | Lightning protection structure | |
| WO2013049968A1 (en) | Insulator and power transmission line device | |
| CN106158072B (en) | A kind of crystal-silicon solar cell low warpage back side aluminium paste | |
| CN217427609U (en) | Electric power fitting for improving corona voltage by reducing condensation possibility | |
| JPWO2016001971A1 (en) | Metal substrate and panel for electronic device fabrication | |
| CN114933853A (en) | Super-hydrophobic anti-pollution flashover coating based on micro-nano structure and preparation method thereof | |
| JPS59103384A (en) | Transparent conductive film for solar cells | |
| CN101783215B (en) | Composite insulator and preparation method thereof | |
| CN105694696A (en) | Modified fluorocarbon varnish and application thereof | |
| Syakur | Comparison Study on Leakage Current of 20 kV Silicon Rubber and Epoxy Resin Insulator Under Dry and Wet Condition | |
| TWI649885B (en) | High-efficiency solar cell and manufacturing method of high-efficiency solar cell | |
| CN207624428U (en) | Heat-resisting 150 DEG C of low haze Automobile cable for lamp | |
| KR102632654B1 (en) | Method for preparing hydrophobic insulator and hydrophobic insulator prepared from the same | |
| CN204189532U (en) | High and cold motor train unit insulator | |
| CN206697303U (en) | Dampproof device for 10 kilovolts of outdoor Zinc-Oxide Arresters | |
| CN114644812B (en) | Novel flame-retardant epoxy potting resin and preparation method thereof | |
| CN206657714U (en) | A kind of dry transformer coil structure of zero partial discharge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |