CN209895846U - Gradient sectional type composite insulator structure and high-voltage insulating subsystem - Google Patents
Gradient sectional type composite insulator structure and high-voltage insulating subsystem Download PDFInfo
- Publication number
- CN209895846U CN209895846U CN201920769411.5U CN201920769411U CN209895846U CN 209895846 U CN209895846 U CN 209895846U CN 201920769411 U CN201920769411 U CN 201920769411U CN 209895846 U CN209895846 U CN 209895846U
- Authority
- CN
- China
- Prior art keywords
- composite insulator
- insulator
- composite
- dielectric constant
- relative dielectric
- 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
Images
Landscapes
- Insulators (AREA)
Abstract
The utility model belongs to the technical field of transmission line insulation structure, a gradient sectional type composite insulator structure and a high-voltage insulator system are disclosed, wherein a pole tower side composite insulator and a wire side composite insulator which are connected by a metal connecting piece are arranged, and composite insulating material layers are coated on the outer sides of the pole tower side composite insulator and the wire side composite insulator; the relative dielectric constant of the composite insulator on the pole tower side is between 3 and 5, and the relative dielectric constant of the composite insulator on the lead side is between 100 and 120. The purpose of uniform electric field is achieved through the rule that the potential distribution changes along with the relative dielectric constant, the uniformity of the 330kV sectional type composite insulator can be effectively improved, the voltage born on the two sections of composite insulators is close, the aging rate is close, the service life of the composite insulator is prolonged, and the voltage born on the insulator on the wire side is reduced and the voltage born on the tower side is increased through the gradient regulation effect of the relative dielectric constant.
Description
Technical Field
The utility model belongs to the technical field of transmission line insulation system, especially, relate to a gradient sectional type composite insulator structure, high-voltage insulator system.
Background
Currently, the closest prior art in the industry:
composite insulators for power transmission lines have recently begun to appear as segmented composite insulator structures, i.e., two sections of composite insulators are assembled together to form a string of composite insulators. The structure and performance of the upper and lower sections of composite insulators in the structure are completely consistent. In the process of the insulator net hanging operation, due to the influence of stray capacitance, the potential distribution of the 330kV sectional type composite insulator is not uniform. The composite insulator on the wire side bears higher voltage, and the composite insulator on the tower side bears lower voltage. The composite insulator on the wire side is aged more quickly, and the safe and stable operation of the power transmission line is not facilitated.
In summary, the problems of the prior art are as follows:
in the process of the insulator grid-hanging operation, due to the influence of stray capacitance, the potential distribution of the 330kV sectional type composite insulator is not uniform, so that the composite insulator on the wire side is high in aging speed, and the safe and stable operation of a power transmission line is not facilitated.
The difficulty of solving the technical problems is as follows:
1. the 330kV sectional type insulator model needs to be accurately established;
2. the potential distribution of the 330kV sectional insulator needs to be accurately obtained;
3. a large number of insulators with different dielectric constants on the wire side need to be subjected to analog calculation respectively to obtain the potential distribution and the relative dielectric constant when the insulators on the iron tower side approach each other.
The significance of solving the technical problems is as follows:
the potential distribution of the 330kV sectional type composite insulator can be uniform, the aging speed of the composite insulator on the wire side and the iron tower side is balanced, and the phenomenon that one section of the insulator is damaged and the other section of the insulator is intact is reduced, so that the service life of the two-section type insulator is effectively prolonged.
SUMMERY OF THE UTILITY MODEL
To the problem that prior art exists, the utility model provides a gradient sectional type composite insulator structure.
The utility model discloses a realize like this, this gradient sectional type composite insulator structure is provided with:
a composite insulator;
the composite insulator is provided with two sections which are connected by a metal connecting piece.
Further, the composite insulator comprises a pole tower side composite insulator and a wire side composite insulator, and the pole tower side composite insulator and the wire side composite insulator are respectively connected to two ends of the metal connecting piece.
Further, the outer sides of the pole tower side composite insulator and the wire side composite insulator are coated with composite insulating material layers.
Further, the relative dielectric constant of the pole tower side composite insulator is between 3 and 5, and the relative dielectric constant of the wire side composite insulator is between 100 and 120.
It is another object of the present invention to provide a high voltage insulator system incorporating the gradient segmented composite insulator structure.
To sum up, the utility model discloses an advantage and positive effect do:
through adopting the same structure, two sections of composite insulators that relative dielectric constant is different are combined and are formed into sectional type insulator, through the rule that potential distribution changes along with relative dielectric constant, reach the purpose of even electric field, can effectively promote 330kV sectional type composite insulator's degree of consistency, it is close to make two sections of composite insulators undertake voltage on to ageing rate is close, improve composite insulator's life-span, through the gradient regulatory action of relative dielectric constant, it becomes low to undertake voltage on making the wire side insulator, the shaft tower side undertakes voltage and uprises.
Drawings
Fig. 1 is a schematic structural view of a gradient sectional composite insulator according to an embodiment of the present invention;
in the figure: 1. a pole tower side composite insulator; 2. a wire-side composite insulator; 3. and (3) a metal connecting piece.
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings.
As shown in fig. 1, the embodiment of the present invention provides a gradient sectional type composite insulator structure, which includes: pole tower side composite insulator 1, wire side composite insulator 2, metal connecting piece 3.
The pole tower side composite insulator 1 and the lead side composite insulator 2 are connected by a metal connecting piece 3, and composite insulating material layers are coated on the outer sides of the pole tower side composite insulator 1 and the lead side composite insulator 2; the pole tower side composite insulator 1 and the conductor side composite insulator 2 have different dielectric constants.
Preferably, the relative dielectric constant of the pole tower side composite insulator 1 is between 3 and 5, and the relative dielectric constant of the conductor side composite insulator 2 is between 100 and 120.
It is another object of the present invention to provide a high voltage insulator system incorporating the gradient segmented composite insulator structure.
The utility model discloses a theory of operation is:
the utility model discloses constitute by two sections composite insulator, adopt metal connecting piece 3 to connect between two sections. The external insulation of the two sections of insulators is mainly made of composite insulating materials, and the relative dielectric constant of the two sections of insulators is between 3 and 5. Two sections of composite insulators with the same structure and different relative dielectric constants are combined to form the sectional insulator. The wire side composite insulator 2 is made of a modified composite insulating material, and the relative dielectric constant of the composite insulating material is ensured to be 100-120. The composite insulating material of the pole tower side composite insulator 1 is unchanged, and the relative dielectric constant of the composite insulating material is 3-5. The purpose of uniform electric field is achieved by the rule that the potential distribution changes along with the relative dielectric constant.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all the modifications and equivalents of the technical spirit of the present invention to any simple modifications of the above embodiments are within the scope of the technical solution of the present invention.
Claims (3)
1. A gradient segmented composite insulator structure, characterized in that it is provided with:
a composite insulator;
the composite insulator is provided with two sections which are connected by a metal connecting piece;
the composite insulator comprises a pole tower side composite insulator and a wire side composite insulator, and the pole tower side composite insulator and the wire side composite insulator are respectively connected to two ends of the metal connecting piece;
the relative dielectric constant of the pole tower side composite insulator is between 3 and 5, and the relative dielectric constant of the wire side composite insulator is between 100 and 120.
2. The gradient segmented composite insulator structure of claim 1, wherein the outside of both the tower side composite insulator and the wire side composite insulator are coated with a layer of composite insulating material.
3. A high voltage insulator sub-system incorporating a gradient segmented composite insulator structure as claimed in any one of claims 1 to 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920769411.5U CN209895846U (en) | 2019-05-27 | 2019-05-27 | Gradient sectional type composite insulator structure and high-voltage insulating subsystem |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920769411.5U CN209895846U (en) | 2019-05-27 | 2019-05-27 | Gradient sectional type composite insulator structure and high-voltage insulating subsystem |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209895846U true CN209895846U (en) | 2020-01-03 |
Family
ID=69021114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920769411.5U Active CN209895846U (en) | 2019-05-27 | 2019-05-27 | Gradient sectional type composite insulator structure and high-voltage insulating subsystem |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209895846U (en) |
-
2019
- 2019-05-27 CN CN201920769411.5U patent/CN209895846U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9698585B2 (en) | Composite tower for power transmission lines of power grid and composite cross arm structure thereof | |
| CN202816510U (en) | 1100 kV gas insulation composite bushing | |
| CN101354933B (en) | Internal electrode for composite insulator and equalizing ring configuring method as well as composite insulator thereof | |
| WO2016090824A1 (en) | Capacitance-type cable terminal without filled insulation medium | |
| CN202899719U (en) | Compound tower and compound cross arm structure thereof for power grid power transmission line | |
| CN209895846U (en) | Gradient sectional type composite insulator structure and high-voltage insulating subsystem | |
| CN204552238U (en) | A kind of wire is the compound cross-arm tangent tower that inverted triangle is arranged | |
| Zhu et al. | Optimal insulation design for new-type transmission tower with composite cross-arm | |
| CN103174321A (en) | Compound tower for power grid power transmission line and compound cross arm structure thereof | |
| CN206722513U (en) | A kind of overhead transmission line composite punching tangent tower | |
| CN203338886U (en) | 800kV gas insulation composite bushing | |
| CN204651068U (en) | A kind of insulating tube type busbar production method conductors dedicated | |
| CN104314352A (en) | Compact composite material power transmission line tower | |
| CN1235235C (en) | Capacity uniform voltage type stick shape suspending composite insulator | |
| CN203145552U (en) | Composite tower used for power grid power lines and composite cross arm structure thereof | |
| CN203325601U (en) | Ultra-high voltage AC-DC porcelain pillar insulator | |
| CN202549462U (en) | Insulation overhead cable | |
| Hassanvand et al. | Effects of corona ring dimensions on the electric field distribution on 132 kV glass insulator | |
| Jahangiri et al. | Electrical Design of Fully Composite Pylon | |
| CN205862843U (en) | A kind of insulated cable structure | |
| CN205943561U (en) | Low -wind -pressure conducting wire | |
| Xie et al. | Study on the voltage-sharing performance of porcelain insulators on 750kV compact double circuit transmission line | |
| CN204696630U (en) | 110kV dry type silicone rubber for cable terminal | |
| CN202957569U (en) | Stop joint for oil-filled cables | |
| CN211239286U (en) | Novel series connection type high-voltage power cable indoor and outdoor terminal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |