CN2438213Y - Composite insulation zinc oxide arrester for lightning protection of line - Google Patents
Composite insulation zinc oxide arrester for lightning protection of line Download PDFInfo
- Publication number
- CN2438213Y CN2438213Y CN 00250882 CN00250882U CN2438213Y CN 2438213 Y CN2438213 Y CN 2438213Y CN 00250882 CN00250882 CN 00250882 CN 00250882 U CN00250882 U CN 00250882U CN 2438213 Y CN2438213 Y CN 2438213Y
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- China
- Prior art keywords
- series gap
- zinc oxide
- lightning arrester
- arrester body
- composite insulation
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Abstract
The utility model is integrally composed of an inner string which is provided with a zinc oxide resistance sheet, an arrester body which is sealed in an insulating outer sleeve and an external series gap. The utility model is characterized in that the external series gap is composed of a synthetic insulator which is arranged on the lower end out of the arrester body and two upper and lower annular electrodes which are fixed to both ends of the synthetic insulator; the external series gap is in series connected with the arrester body; the upper end of the arrestor body is hung on a pole tower cross dan, and the external series gap of the lower end is connected with a bus bar. The utility model can achieve the purpose of protective circuit by the energy of the lightning current, which is discharged by actions under the condition that the circuit is subjected from lightning strike, and the circuit insulator string can not flash over.
Description
The utility model relates to the lightning arrester in the electricity field, particularly has the line thunder protection compound inslation zinc oxide arrester of the external series gap of connecting.
Line thunder protection has two kinds with the structure of lightning arrester, and a kind of is no clearance type, and another kind is gapped type.The advantage of no clearance type lightning arrester is the time delay of not discharging, and therefore has reliable overvoltage Limiting ability.Its shortcoming is the effect that lightning arrester is subjected to power-frequency voltage for a long time when operate as normal, and chargeability should not be too high for this reason, in order to avoid influence the life-span of lightning arrester, thereby its lightning impulse residual voltage is also corresponding higher.
The purpose of this utility model is to overcome the weak point of above-mentioned existence, and provide a kind of chargeability height, the lightning impulse residual voltage is corresponding lower, and lightning arrester is not subjected to the power-frequency voltage effect under the normal condition, line thunder protection safe and reliable to operation compound inslation zinc oxide arrester.
The purpose of this utility model is achieved by the following technical solution, and it is by interior string zinc oxide resistance sheet to be arranged, and the lightning arrester body and the external series gap that are sealed in the composite insulation outer coat form a whole.The external series gap by be installed on the lightning arrester body outer lower end composite insulator and two upper and lower ring electrodes that are fixed in the composite insulator two ends form.External series gap and lightning arrester body connect.The lightning arrester body upper end is suspended on the shaft tower cross-arm, and the external series gap of its lower end connects with line conductor.
Only consider and do time spent series gap action in lightning overvoltage, the continuous operating voltage of system acts on lightning arrester, and action time is very of short duration, is no more than 1～2 power frequency period usually.Therefore, chargeability can be brought up near 1.0 (power station type lightning arrester is about 0.7).In the utility model, be made up of 30～27 zinc oxide resistance sheets in the lightning arrester body of 110KV, the lightning arrester body of 220KV is made up of 60～54 zinc oxide resistance sheets.Make the electric charge rate bring up to 0.84.For guaranteeing that flashover does not take place external insulation of the present utility model under moist and filthy condition, the composite insulation outer coat of the lightning arrester body of 110KV is made up of 17～10 external insulation umbrella covers; The compound external insulation sleeve of the lightning arrester body of 220KV is made up of 34～20 external insulation umbrella covers, and compound external insulation sleeve is generally made by silicon rubber.
In order to satisfy: (1) line insulator string and insulation coordination of the present utility model, promptly under lightning overvoltage, move the external series gap, the lightning arrester energy of releasing, and flashover does not take place in line insulator string; (2) the cut-out ability of power frequency continued flow, promptly the utility model should be able to guarantee that (1～2 power frequency period) cuts off power frequency continued flow reliably in the short as far as possible time; (3) power frequency and switching overvoltage resistance characteristics, promptly should be able to guarantee under power frequency and switching overvoltage effect, the lightning arrester series gap does not puncture, and lightning arrester body also can not be subjected to the effect of power frequency and switching impulse, and the external series gap length of 110KV is 475～525mm.The series gap length of 220KV is 998～1103mm.The diameter of the upper and lower ring electrode of the external series gap of 110KV is respectively 25cm, 30cm, is made by φ 25mm tubing, and the diameter of the upper and lower ring electrode 2,5 of the external series gap of 220KV is respectively 25cm, 30cm, is made by φ 25mm or φ 30mm tubing.Composite insulator is made up of composite insulation outer coat and the plug 8 that is sealed in composite insulation outer coat, and composite insulation outer coat is generally made by silicon rubber.
Description of drawings:
Fig. 1: the utility model structural representation
Fig. 2: the utility model cut-away view
Fig. 3: the practical installation diagram of the utility model
Wherein: 1～lightning arrester body; 2～upward ring electrodes; 3～synthetic insulator;
4～line insulator string; 5～following ring electrode; 6～oxidation zinc metal sheet group;
7～composite insulation outer coat; 8～plug; 9～composite insulation outer coat;
10～iron tower
Elaborate below in conjunction with drawings and Examples.
Shown in Fig. 1,3, the utility model is by interior string the zinc oxide resistance sheet group to be arranged, and the lightning arrester body 1 and the external series gap that are sealed in the composite insulation outer coat 7 are formed.The external series gap by be installed on lightning arrester body 1 outer lower end composite insulator 3 and two upper and lower ring electrodes 2,5 that are fixed in composite insulator 3 two ends form.Lightning arrester body 1 upper end is suspended on the shaft tower cross-arm, and its lower end connects with last ring electrode 2.Following ring electrode 5 connects with line conductor.Line insulator string 4 upper ends are suspended on the shaft tower cross-arm, and the lower end connects with following ring electrode 5 by line conductor.
In Fig. 1,2 described external series gaps, the diameter of the upper and lower ring electrode 2,5 of 110KV is respectively 25cm, 30cm, is made series gap length 475～525mm by φ 25mm tubing.On the 220KV, the diameter of following ring electrode 2,5 is respectively 25cm, 30cm, is made series gap length 998～1103mm by φ 25mm or φ 30mm tubing.Composite insulator 3 is made up of composite insulation outer coat 9 and the plug 8 that is sealed in composite insulation outer coat 9.Composite insulation outer coat 9 is generally made by silicon rubber.Plug is made by insulating glass.
The utility model can guarantee that lightning arrester integral body cooperates coefficient greater than 1.35 with the lightning impulse of line insulator string; can satisfy under the situation that circuit is struck by lightning; its action message releases the energy of lightning current, and line insulator string can flashover, reaches the purpose of protection circuit.Even under the so extreme serious situation of lightning arrester body dead short circuit, external series gap of the present utility model also can satisfy the requirement of being failure to actuate under the switching overvoltage.The external series gap can cut off power frequency continued flow reliably at 0.5 power frequency period in the time under power-frequency voltage.
Claims (3)
1. string has the zinc oxide resistance sheet group in one kind, and be sealed in the line thunder protection compound inslation zinc oxide arrester that lightning arrester body 1 in the composite insulation outer coat 7 and external series gap are formed, it is characterized in that the external series gap is made up of the composite insulator 3 that is installed on lightning arrester body 1 outer lower end and two upper and lower ring electrodes 2,5 that are fixed in composite insulator 3 two ends, following ring electrode 5 and line insulator string 4 connect by lead, lightning arrester body 1 upper end is suspended on the shaft tower cross-arm, and its lower end connects with last series gap ring electrode 2.
2. line thunder protection compound inslation zinc oxide arrester according to claim 1 is characterized in that the lightning arrester body 1 of described 110KV is made up of 30～27 zinc oxide resistance sheets 6 and the outer composite insulation outer coat of being made up of 12～10 external insulation umbrella covers 7 interior string; The lightning arrester body 1 of described 220KV is made up of 60～54 zinc oxide resistance sheets 6 and the outer composite insulation outer coat of being made up of 34～20 external insulation umbrella covers 7 interior string.
3. line thunder protection compound inslation zinc oxide arrester according to claim 1, it is characterized in that in the described external series gap, the diameter of the upper and lower ring electrode 2,5 of 110KV is respectively 25cm, 30cm, is made of series gap length 475～525mm φ 25mm tubing; On the 220KV, the diameter of following ring electrode 2,5 is respectively 25cm, 30cm, form by φ 25mm or φ 30mm tubing, series gap length 998～1103mm, composite insulator 3 is made up of composite insulation outer coat 9 and the plug 8 that is sealed in composite insulation outer coat 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00250882 CN2438213Y (en) | 2000-09-08 | 2000-09-08 | Composite insulation zinc oxide arrester for lightning protection of line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00250882 CN2438213Y (en) | 2000-09-08 | 2000-09-08 | Composite insulation zinc oxide arrester for lightning protection of line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2438213Y true CN2438213Y (en) | 2001-07-04 |
Family
ID=33608956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00250882 Expired - Fee Related CN2438213Y (en) | 2000-09-08 | 2000-09-08 | Composite insulation zinc oxide arrester for lightning protection of line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2438213Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103595005A (en) * | 2013-12-05 | 2014-02-19 | 国家电网公司 | Insulator type lightning arrester |
| CN103606425A (en) * | 2013-12-05 | 2014-02-26 | 国家电网公司 | Lightning arrester with performance of line insulator |
| WO2014169509A1 (en) * | 2013-04-18 | 2014-10-23 | 国家电网公司 | New power distribution network overvoltage protector equipped with ring-shaped electrode and distanced grades |
| CN105938978A (en) * | 2016-06-01 | 2016-09-14 | 武汉大学 | Multi-gap lightning-protection insulator used for alternating-current overhead transmission line |
| CN106655067A (en) * | 2016-09-27 | 2017-05-10 | 国网浙江省电力公司丽水供电公司 | Line flashover protector |
| CN112614640A (en) * | 2020-12-24 | 2021-04-06 | 温州锦泰高压电气制造有限公司 | 500kV transmission line is with preventing wind partially jumper wire arrester |
-
2000
- 2000-09-08 CN CN 00250882 patent/CN2438213Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014169509A1 (en) * | 2013-04-18 | 2014-10-23 | 国家电网公司 | New power distribution network overvoltage protector equipped with ring-shaped electrode and distanced grades |
| CN103595005A (en) * | 2013-12-05 | 2014-02-19 | 国家电网公司 | Insulator type lightning arrester |
| CN103606425A (en) * | 2013-12-05 | 2014-02-26 | 国家电网公司 | Lightning arrester with performance of line insulator |
| CN103595005B (en) * | 2013-12-05 | 2017-02-08 | 国家电网公司 | Insulator type lightning arrester |
| CN105938978A (en) * | 2016-06-01 | 2016-09-14 | 武汉大学 | Multi-gap lightning-protection insulator used for alternating-current overhead transmission line |
| CN106655067A (en) * | 2016-09-27 | 2017-05-10 | 国网浙江省电力公司丽水供电公司 | Line flashover protector |
| CN112614640A (en) * | 2020-12-24 | 2021-04-06 | 温州锦泰高压电气制造有限公司 | 500kV transmission line is with preventing wind partially jumper wire arrester |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |