CN113903537A - 220kV lightning arrester device and implementation method thereof - Google Patents
220kV lightning arrester device and implementation method thereof Download PDFInfo
- Publication number
- CN113903537A CN113903537A CN202111221282.4A CN202111221282A CN113903537A CN 113903537 A CN113903537 A CN 113903537A CN 202111221282 A CN202111221282 A CN 202111221282A CN 113903537 A CN113903537 A CN 113903537A
- Authority
- CN
- China
- Prior art keywords
- lightning arrester
- arrester
- composite insulator
- lightning
- body element
- 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.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/12—Overvoltage protection resistors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/001—Mass resistors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/105—Varistor cores
- H01C7/108—Metal oxide
- H01C7/112—ZnO type
-
- 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
- H02G13/00—Installations of lightning conductors; Fastening thereof to supporting structure
- H02G13/80—Discharge by conduction or dissipation, e.g. rods, arresters, spark gaps
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Insulators (AREA)
Abstract
The invention discloses a 220kV lightning arrester device and an implementation method thereof, wherein the device comprises a composite insulator and a first lightning arrester, the composite insulator and the first lightning arrester are both vertically arranged on the lower surface of a pole tower cross arm, the bottom end of a lower terminal of the composite insulator is connected with a jumper, a second lightning arrester which is inclined upwards is arranged on the lower terminal of the composite insulator, and an air gap is formed between the end part of the first lightning arrester and the end part of the second lightning arrester. The invention ensures the stability of the air gap distance of the arrester device, the stable and reliable electrical performance and the excellent lightning protection effect, and realizes the application of the air gap arrester on the tension tower. The invention reduces the difficulty of adjusting the gap distance in high-altitude operation on the tower and improves the safety of installation and construction.
Description
Technical Field
The invention relates to the technical field of arresters, in particular to a 220kV arrester device and an implementation method thereof.
Background
Overhead transmission lines are an important component of power systems, which deliver the electrical energy generated by power plants to load centers across the country. With the development of national economy, the coverage range of 220kV high-voltage alternating-current transmission lines in China is wider and wider, the transmission lines become backbone power supply networks of large and medium cities, and the power supply reliability of the transmission lines is directly related to the development of national economy and the quality of life of residents.
According to the statistical data of the operation of a certain province line, the tripping times of the 220kV high-voltage transmission line caused by lightning stroke account for 40-70% of the total tripping times of the line, and the tripping times of the 220kV strain tower in the province in the second quarter of 2020 reaches 18 times. The lightning protection transformation device is mainly characterized in that the lightning protection transformation can be carried out on the linear tower by adopting the lightning arrester with the air gap, and the lightning arrester with the air gap is difficult to use for the tension tower, so that the transformation is only carried out on the linear tower at the initial stage of the lightning protection transformation of the linear tower, and the lightning protection problem of the tension tower is ignored. Finally, the tension tower in the overhead transmission line is lack of sufficient lightning protection capability, so that the safety and stability of the line operation are reduced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a 220kV lightning arrester device and an implementation method thereof.
In order to achieve the purpose, the 220kV lightning arrester device comprises a composite insulator and a first lightning arrester, wherein the composite insulator and the first lightning arrester are vertically arranged on the lower surface of a pole tower cross arm, the bottom end of a lower terminal of the composite insulator is connected with a jumper, a second lightning arrester which is inclined upwards is arranged on the lower terminal of the composite insulator, and an air gap is formed between the end part of the first lightning arrester and the end part of the second lightning arrester.
Further, the first arrester and the second arrester each include an arrester body element, and an electrode end of the arrester body element is provided with an electrode.
Still further, the electrode of the first arrester is bent towards the composite insulator, the electrode of the second arrester is bent towards the first arrester, and the bending angle of the electrode is 30-60 degrees.
Still further, the distance of the air gap between the electrode of the first lightning arrester and the electrode of the second lightning arrester is 800-.
Furthermore, a zinc oxide resistance card with single columns connected in series is arranged inside the lightning arrester body element, the zinc oxide resistance card is packaged by an epoxy glass fiber insulating cylinder, and the outside of the zinc oxide resistance card is covered with a silicon rubber umbrella sleeve; the length of the lightning arrester body element is 800-900mm, and the creepage distance is 2400-3000 mm.
Still further, the specification of the zinc oxide resistance card is phi 46 × 21.5mm, the gradient of the zinc oxide resistance card reaches 280V/mm, and the square wave through-current capacity exceeds 600A (the use of the small-sized high-gradient zinc oxide resistance card reduces the size and the weight of the arrester, and simultaneously reduces the requirement of the arrester body element of the second arrester on the bending resistance of the composite insulator, namely the bearing of the arrester body element of the second arrester can be realized without a large-diameter core rod, so that the integral structure of the device is compact and reasonable, no additional installation accessories are needed, the double effects of lightning protection and strong wind disturbance resistance are achieved, and the operation and maintenance workload of the line is greatly reduced).
Still further, the composite insulator comprises a body element, wherein an upper terminal and a lower terminal are respectively arranged at two ends of the body element, the length of the body element is 2800-.
The inside of the body element is an epoxy glass fiber rod, the diameter of the epoxy glass fiber rod is 35-40mm, and the outside of the epoxy glass fiber rod is covered with a silicone rubber umbrella cover.
Still further, the terminal is improved level and is provided with the mounting bracket down, the mounting bracket front end is fan-shaped structure, and the cambered surface of fan-shaped structure is provided with a plurality of mounting holes at the interval, the installation end of the arrester body component of second arrester is installed at the mounting hole internal fixation.
The invention also provides an implementation method of the 220kV lightning arrester device, which comprises the following steps:
1) when replacing a jumper string of a 220kV line tension tower, replacing an original glass or porcelain insulator with a composite insulator, wherein a high-strength epoxy glass fiber rod is adopted in a body element of the composite insulator, an upper terminal is fixedly connected with a cross arm of the tower, a lower terminal is connected with a jumper (the jumper is fixed through the composite insulator to avoid the jumper from swinging), and meanwhile, the lower terminal is connected with a second lightning arrester;
2) the first lightning arrester is fixed on a cross arm of a tower, and the position of the first lightning arrester on the cross arm can be adjusted according to the requirements of the site environment and the gap distance of the lightning arrester device;
3) the second lightning arrester is connected to the lower terminal of the composite insulator through the mounting frame and forms an included angle with the lower terminal, and the second lightning arrester is mounted on the mounting frame at different angles according to the requirements of the site environment and the gap distance of the lightning arrester device, so that the angle between the second lightning arrester and the composite insulator is adjusted;
4) when lightning overvoltage occurs to the line, the two lightning arresters act rapidly, and the air gap is broken down, so that the overvoltage is limited to a lower level to protect the composite insulator from being broken down; after the overvoltage disappears, the lightning arrester recovers to a high resistance state, and cuts off the power frequency follow current of the air gap, so that the occurrence of line ground faults is avoided.
The invention has the beneficial effects that:
1. the jumper wire is rigidly connected to the tower cross arm: the phenomenon that the jumper insulator string swings under severe weather environmental conditions such as strong wind and abnormal discharge to the pole tower is avoided, the stability of the air gap distance of the lightning arrester device is guaranteed, the electrical performance is stable and reliable, the lightning protection effect is excellent, and the application of the air gap lightning arrester on the tension tower is realized.
2. The gap distance is rapidly determined: the whole assembly of the lightning arrester device can be simulated on a computer and is subjected to on-site trial assembly, the mounting position of the lightning arrester body element of the first lightning arrester on the cross arm of the tower and the mounting angle of the lightning arrester body element of the second lightning arrester on the composite insulator are determined in advance, so that the air gap distance is directly determined and fixed, the difficulty of adjusting the gap distance in high-altitude operation on the tower is reduced, and the safety of mounting and construction is improved.
3. No additional installation accessories and light weight: this arrester device does not need extra installing support, use the high gradient zinc oxide resistance card of small-size simultaneously, the size and the weight of arrester have been reduced, the arrester body component of second arrester has also been reduced simultaneously to the requirement of composite insulator bending resistance, need not the plug of major diameter promptly and can realize bearing to the arrester body component of second arrester, it is compact reasonable to have realized device overall structure, and have the dual effect of lightning protection and anti strong wind disturbance concurrently, the fortune dimension work load of greatly reduced circuit.
Drawings
FIG. 1 is a schematic structural diagram of a 220kV lightning arrester device;
FIG. 2 is a detail view of the mounting hole;
in the figure, a composite insulator 1, a body element 1.1, an upper terminal 1.2, a lower terminal 1.3, a first lightning arrester 2, a pole tower cross arm 3, a jumper 4, a second lightning arrester 5, a lightning arrester body element 6, an electrode 7, a mounting rack 8 and a mounting hole 8.1.
Detailed Description
The invention is described in further detail below with reference to the figures and specific embodiments for the understanding of those skilled in the art.
The 220kV lightning arrester device shown in fig. 1 comprises a composite insulator 1 and a first lightning arrester 2, wherein the composite insulator 1 and the first lightning arrester 2 are both vertically arranged on the lower surface of a pole tower cross arm 3, and the bottom end of a lower terminal 1.3 of the composite insulator 1 is connected with a jumper 4;
the composite insulator 1 comprises a body element 1.1, wherein an epoxy glass fiber rod is arranged inside the body element 1.1, the diameter of the epoxy glass fiber rod is 35-40mm, and a silicone rubber umbrella cover covers the outer part of the epoxy glass fiber rod; the two ends of the body element 1.1 are respectively provided with an upper terminal 1.2 and a lower terminal 1.3, the length of the body element 1.1 is 2800-;
a mounting frame 8 is horizontally arranged on the lower terminal 1.3, the front end of the mounting frame 8 is of a fan-shaped structure, a plurality of mounting holes 8.1 are formed in the arc surface of the fan-shaped structure at intervals, and the mounting end of the lightning arrester body element 6 of the second lightning arrester 5 is mounted in the mounting hole 8.1 and fixed so that the second lightning arrester 5 inclines upwards;
an air gap is formed between the end part of the first lightning arrester 2 and the end part of the second lightning arrester 5; the first arrester 2 and the second arrester 5 each comprise an arrester body element 6;
the inside of the lightning arrester body element 6 is provided with a zinc oxide resistance card with single columns connected in series, the specification of the zinc oxide resistance card is phi 46 multiplied by 21.5mm, the gradient of the zinc oxide resistance card reaches 280V/mm, and the square wave through-current capacity exceeds 600A;
the zinc oxide resistance card is packaged by an epoxy glass fiber insulating cylinder, and the outer wall part is covered with a silicon rubber umbrella cover; the length of the lightning arrester body element 6 is 800-900mm, and the creepage distance is 2400-3000 mm;
the electrode end of the lightning arrester body element 6 is provided with an electrode 7; the electrode 7 of the first lightning arrester 2 is bent towards the composite insulator 1, the electrode 7 of the second lightning arrester 5 is bent towards the first lightning arrester 2, and the bending angle of the electrode 7 is 30-60 degrees;
the distance of the air gap between the electrode 7 of the first arrester 2 and the electrode 7 of the second arrester 5 is 800-1000 mm.
The implementation method of the 220kV lightning arrester device comprises the following steps:
1) when replacing a jumper string of a tension tower of a 220kV line, the adopted glass or porcelain insulator is the composite insulator 1, a high-strength epoxy glass fiber rod is adopted in a body element 1.1 of the composite insulator 1, an upper terminal 1.2 is fixedly connected with a tower cross arm 3, a lower terminal 1.3 is connected with a jumper 4, and meanwhile, the lower terminal 1.3 is connected with a second lightning arrester 5;
2) the first lightning arrester 2 is fixed on a tower cross arm 3, and the position of the first lightning arrester on the cross arm can be adjusted according to the field environment and the gap distance requirement of the lightning arrester device;
3) the second lightning arrester 5 is connected to the lower terminal 1.3 of the composite insulator 1 through the mounting frame 8 and forms an included angle with the lower terminal, and the second lightning arrester 5 is mounted on the mounting frame 8 at different angles according to the requirements of the field environment and the gap distance of the lightning arrester device, so that the angle between the second lightning arrester 5 and the composite insulator 1 is adjusted;
4) when lightning overvoltage occurs to the line, the two lightning arresters act rapidly, and the air gap is broken down, so that the overvoltage is limited to a lower level to protect the composite insulator 1 from being broken down; after the overvoltage disappears, the lightning arrester recovers to a high resistance state, and cuts off the power frequency follow current of the air gap, so that the occurrence of line ground faults is avoided.
Other parts not described in detail are prior art. Although the present invention has been described in detail with reference to the above embodiments, it is only a part of the embodiments of the present invention, not all of the embodiments, and other embodiments can be obtained without inventive step according to the embodiments, and the embodiments are within the scope of the present invention.
Claims (9)
1. The utility model provides a 220kV arrester device which characterized in that: it includes composite insulator (1) and first arrester (2), composite insulator (1) and first arrester (2) all set up perpendicularly and lie in the lower surface of shaft tower cross arm (3), jumper wire (4) are connected to lower terminal (1.3) bottom of composite insulator (1), be provided with second arrester (5) of tilt up on lower terminal (1.3) of composite insulator (1), become air gap between first arrester (2) tip and second arrester (5) tip.
2. The 220kV arrester device of claim 1, wherein: the first lightning arrester (2) and the second lightning arrester (5) both comprise a lightning arrester body element (6), and an electrode end of the lightning arrester body element (6) is provided with an electrode (7).
3. The 220kV arrester device of claim 1, wherein: the electrode (7) of the first lightning arrester (2) is bent towards the composite insulator (1), the electrode (7) of the second lightning arrester (5) is bent towards the first lightning arrester (2), and the bending angle of the electrode (7) is 30-60 degrees.
4. The 220kV arrester device of claim 1, wherein: the distance of the air gap between the electrode (7) of the first lightning arrester (2) and the electrode (7) of the second lightning arrester (5) is 800-1000 mm.
5. The 220kV arrester device of claim 2, wherein: the inside of the lightning arrester body element (6) is provided with a zinc oxide resistance card which is connected in series by a single column, the zinc oxide resistance card is packaged by an epoxy glass fiber insulating cylinder, and the outside is covered with a silicon rubber umbrella sleeve; the length of the lightning arrester body element (6) is 800-900mm, and the creepage distance is 2400-3000 mm.
6. The 220kV arrester device of claim 5, wherein: the specification of the zinc oxide resistance card is phi 46 multiplied by 21.5mm, the gradient of the zinc oxide resistance card reaches 280V/mm, and the square wave through-current capacity exceeds 600A.
7. The 220kV arrester device of claim 1, wherein: the composite insulator (1) comprises a body element (1.1), wherein an upper terminal (1.2) and a lower terminal (1.3) are respectively arranged at two ends of the body element (1.1), the length of the body element (1.1) is 2800-.
The inside of the body element (1.1) is an epoxy glass fiber rod, the diameter of the epoxy glass fiber rod is 35-40mm, and the outside of the epoxy glass fiber rod is covered with a silicon rubber umbrella cover.
8. The 220kV lightning arrester device according to claim 1 or 7, characterized in that: the lower terminal (1.3) is improved level and is provided with mounting bracket (8), mounting bracket (8) front end is fan-shaped structure, and the interval is provided with a plurality of mounting holes (8.1) on the cambered surface of fan-shaped structure, the installation end of arrester body component (6) of second arrester (5) is installed in mounting hole (8.1) internal fixation.
9. A method for realizing the 220kV lightning arrester device of claim 1, characterized in that: the method comprises the following steps:
1) when replacing a jumper string of a tension tower of a 220kV line, the adopted glass or porcelain insulator is a composite insulator (1), a high-strength epoxy glass fiber rod is adopted in a body element (1.1) of the composite insulator (1), an upper terminal (1.2) is fixedly connected with a cross arm (3) of the tower, a lower terminal (1.3) is connected with a jumper (4), and meanwhile, the lower terminal (1.3) is connected with a second lightning arrester (5);
2) the first lightning arrester (2) is fixed on a tower cross arm (3), and the position of the first lightning arrester on the cross arm can be adjusted according to the field environment and the gap distance requirement of the lightning arrester device;
3) the second lightning arrester (5) is connected to the lower terminal (1.3) of the composite insulator (1) through the mounting frame (8) and forms an included angle with the lower terminal, and the second lightning arrester (5) is mounted on the mounting frame (8) at different angles according to the requirements of the field environment and the gap distance of the lightning arrester device, so that the angle between the second lightning arrester (5) and the composite insulator (1) is adjusted;
4) when lightning overvoltage occurs to the line, the two lightning arresters act rapidly, and the air gap is broken down, so that the overvoltage is limited to a lower level to protect the composite insulator (1) from being broken down; after the overvoltage disappears, the lightning arrester recovers to a high resistance state, and cuts off the power frequency follow current of the air gap, so that the occurrence of line ground faults is avoided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111221282.4A CN113903537A (en) | 2021-10-20 | 2021-10-20 | 220kV lightning arrester device and implementation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111221282.4A CN113903537A (en) | 2021-10-20 | 2021-10-20 | 220kV lightning arrester device and implementation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113903537A true CN113903537A (en) | 2022-01-07 |
Family
ID=79192789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111221282.4A Pending CN113903537A (en) | 2021-10-20 | 2021-10-20 | 220kV lightning arrester device and implementation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113903537A (en) |
-
2021
- 2021-10-20 CN CN202111221282.4A patent/CN113903537A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102157253B (en) | Outer-gap lightning arrester | |
| CN102024543B (en) | Composite insulator support fixing gap line type arrester | |
| CN203747241U (en) | Air gap lightning arrester | |
| CN202473431U (en) | External string pure air gap lightning arrester | |
| CN2888710Y (en) | Neutral point protector for 110KV or 220KV transformer | |
| CN202189630U (en) | 10kV lightning flashover protector with discharge counter | |
| CN201171150Y (en) | Overvoltage protector for open-resistant lever for avoiding wire from breaking due to lightning stroke | |
| CN109448939A (en) | A kind of tension-resistant rod external series gap metal oxide arrester | |
| CN216412782U (en) | 220kV lightning arrester device | |
| CN209199692U (en) | A kind of tension-resistant rod external series gap metal oxide arrester | |
| CN113903537A (en) | 220kV lightning arrester device and implementation method thereof | |
| CN201985500U (en) | Oblique-pulling and hanging type lightning arrester for 500KV power transmission line | |
| CN203260987U (en) | High-voltage line lightning arrester | |
| CN202102814U (en) | Porcelain insulator for preventing insulated conductor breakage caused by lightning stroke | |
| CN201498967U (en) | Angle-form over-voltage protection device | |
| CN207442184U (en) | Low residual voltage, deterioration visible fixed external series gap arrester | |
| CN114156825A (en) | Lightning protection and breaking device for shielding, insulating and isolating 10kV overhead insulated line | |
| CN109215902B (en) | 500kV line lightning protection device based on arrester and insulator | |
| CN207542564U (en) | A kind of insulator style voltage limiter of function with ground | |
| CN105762753A (en) | +/-800kV DC line arrester installing device and method | |
| CN2456279Y (en) | Zinc oxide lightning arrester for power lines | |
| CN201072678Y (en) | Composite casing metal oxide arrester for maintenance-free alternating current electric power line | |
| CN201490714U (en) | Line lighting protection overvoltage protector | |
| CN212587276U (en) | 35KV annular voltage limiter | |
| CN215185797U (en) | Ground connection downlead device of lightning conductor |
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 |