CN205388922U - Composite covering has series gap metal oxide lightning arrester for 420kV alternating current transmission line - Google Patents
Composite covering has series gap metal oxide lightning arrester for 420kV alternating current transmission line Download PDFInfo
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- CN205388922U CN205388922U CN201521138986.5U CN201521138986U CN205388922U CN 205388922 U CN205388922 U CN 205388922U CN 201521138986 U CN201521138986 U CN 201521138986U CN 205388922 U CN205388922 U CN 205388922U
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- series gap
- lightning arrester
- transmission line
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- metal oxide
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Abstract
The utility model discloses a composite covering has series gap metal oxide lightning arrester for 420kV alternating current transmission line, including series gap group, be connected with the lightning arrester body of a plurality of series connection in the series gap group, series gap group is including having a plurality of supporting insulator that establish ties in the clearance, the both ends of series gap group all are provided with the electrode, terminal lightning arrester body's high -pressure side is connected to one of them electrode, the transmission line wire is connected to another electrode, make this device be not more than 1831kV at standard lightning impulse 50% discharge voltage, , lightning arrester body can endure the power frequency voltage 1min who is not less than 267kV when breaking down under the regulation condition of drenching with rain, it does not appear can enduring the power frequency voltage 1min who is not less than 340kV when unusual under the condition of drenching with rain of regulation, the compact structure of this device is simple, and small in size, easy installation, the clearance adjustment scope is big, mission profile is reasonable, and has a good application prospect.
Description
[technical field]
This utility model belongs to AC transmission system power equipment overvoltage preventer field, and being specifically related to 420kV transmission line of alternation current composite sheath has series gap metal oxide arrester.
[background technology]
Engineering generally adopts and reduces earth resistance, erection installation of dual lightning wires, reduce the methods such as spark gap line shielding angle and limit lightning surge, reduce tripping rate with lightning strike.But, the mountain area line segment strong at lightening activity, reduction earth resistance is difficult, above-mentioned means can not fundamentally solve lightning stroke trip problem.
Not having the test data in series gap metal oxide arrester and Insulation Coordination about 420kV transmission line of alternation current composite sheath both at home and abroad at present, test and design difficulty are big.
This is accomplished by proposing miniaturization has the theory of application in series gap metal oxide arrester at 420kV transmission line of alternation current composite sheath, the 420kV transmission line of alternation current composite sheath designing miniaturization has series gap metal oxide arrester, reduces installation difficulty；It needs to be determined that 420kV transmission line of alternation current composite sheath has body dimension and the clearance distance of series gap metal oxide arrester.
[utility model content]
The purpose of this utility model is in that to overcome above-mentioned deficiency, it is provided that a kind of 420kV transmission line of alternation current composite sheath has series gap metal oxide arrester, and its compact conformation is simple, volume is little, easy for installation, and gap adjusting range is big, technical parameter is reasonable, has a good application prospect.
In order to achieve the above object, this utility model includes series gap group, series gap group is connected to the lightning arrester body of some series connection, series gap group includes some supports insulative with gap series, the two ends of series gap group are provided with electrode, one of them electrode connects the high-pressure side of end lightning arrester body, and another electrode connects transmission line wire；Lightning arrester body includes spark gap overcoat, and spark gap jacket internal is provided with resistor disc, and the two ends of spark gap overcoat are provided with attachment structure.
The dry arcing distance of described spark gap overcoat is be more than or equal to 2790mm.
Described series gap group is 1100mm～1300mm.
Described electrode connects the high-pressure side of lightning arrester body or the diameter of transmission line wire, metal tube or metallic rod be more than or equal to 50mm by metal tube or metallic rod.
Described lightning arrester body is provided with three, and the total length of three lightning arrester bodies and series gap group is 5529mm～5729mm.
Compared with prior art, this utility model connects some lightning arrester bodies by series gap group, series gap group is provided with some supports insulative of gap series, this device is made to be not more than 1831kV at standard lightning impulse 50% discharge voltage, it is capable of withstanding under regulation drenches with rain condition by the power-frequency voltage 1min being not less than 267kV when lightning arrester body breaks down, it is capable of withstanding under the condition of drenching with rain of regulation by the power-frequency voltage 1min being not less than 340kV when it exception does not occur, the compact conformation of this device is simple, volume is little, easy for installation, gap adjusting range is big, technical parameter is reasonable, have a good application prospect.
Further; dry arcing distance of the present utility model is be more than or equal to 2790mm; so that lightning arrester body is capable of withstanding by the lightning impulse voltage 1550kV being not less than its actual level of protection 1.3 times, and it is capable of withstanding by the power-frequency voltage 1min being not less than 340kV under the condition of drenching with rain of regulation.
Further, this utility model resistor disc can pass through to be not less than the long duration impulse current test of 1200A and continuous 3 times by 4/10 μ s heavy current impact resistance test that amplitude is 100kA.
[accompanying drawing explanation]
Fig. 1 structural representation of the present utility model.
[detailed description of the invention]
Below in conjunction with accompanying drawing, this utility model is described further.
Referring to Fig. 1, this utility model includes series gap group 1, series gap group 1 is connected to the lightning arrester body 2 of some series connection, series gap group 1 includes some supports insulative 3 with gap series, the two ends of series gap group 1 are provided with electrode 4, one of them electrode connects the high-pressure side of end lightning arrester body 2, and another electrode connects transmission line wire；Lightning arrester body 2 includes spark gap overcoat 5, spark gap overcoat 5 is internally provided with resistor disc, the two ends of spark gap overcoat 5 are provided with attachment structure 6, wherein, the dry arcing distance of spark gap overcoat 5 is be more than or equal to 2790mm, and series gap group 1 is 1100mm～1300mm, with the distance of 1200mm for excellent, electrode connects the high-pressure side of lightning arrester body 2 or the diameter of transmission line wire, metal tube or metallic rod be more than or equal to 50mm by metal tube or metallic rod.
Preferably, lightning arrester body 2 is provided with three, and the total length of three lightning arrester bodies 2 and series gap group 1 is 5529mm～5729mm.
The creep age distance of this device is not less than 10500mm, rated voltage is that under 360kVrms direct current 1ms, reference voltage is not less than 490kV, under nominal discharge current 20kA, 20kA lightning impulse current, residual voltage is not more than under the dash current of 850kV, 20kA abrupt slope residual voltage and is not more than 918kA.
Claims (5)
1. a 420kV transmission line of alternation current composite sheath has series gap metal oxide arrester, it is characterized in that: include series gap group (1), series gap group (1) is connected to the lightning arrester body (2) of some series connection, series gap group (1) includes some supports insulative (3) with gap series, the two ends of series gap group (1) are provided with electrode (4), one of them electrode connects the high-pressure side of end lightning arrester body (2), and another electrode connects transmission line wire；Lightning arrester body (2) includes spark gap overcoat (5), and spark gap overcoat (5) is internally provided with resistor disc, and the two ends of spark gap overcoat (5) are provided with attachment structure (6).
2. a kind of 420kV transmission line of alternation current according to claim 1 composite sheath has series gap metal oxide arrester, it is characterised in that: the dry arcing distance of described spark gap overcoat (5) is be more than or equal to 2790mm.
3. a kind of 420kV transmission line of alternation current according to claim 1 composite sheath has series gap metal oxide arrester, it is characterised in that: described series gap group (1) is 1100mm～1300mm.
4. a kind of 420kV transmission line of alternation current according to claim 1 composite sheath has series gap metal oxide arrester, it is characterized in that: described electrode connects the high-pressure side of lightning arrester body (2) or the diameter of transmission line wire, metal tube or metallic rod be more than or equal to 50mm by metal tube or metallic rod.
5. a kind of 420kV transmission line of alternation current according to claim 1 composite sheath has series gap metal oxide arrester, it is characterized in that: described lightning arrester body (2) is provided with three, the total length of three lightning arrester bodies (2) and series gap group (1) is 5529mm～5729mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521138986.5U CN205388922U (en) | 2015-12-31 | 2015-12-31 | Composite covering has series gap metal oxide lightning arrester for 420kV alternating current transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521138986.5U CN205388922U (en) | 2015-12-31 | 2015-12-31 | Composite covering has series gap metal oxide lightning arrester for 420kV alternating current transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205388922U true CN205388922U (en) | 2016-07-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201521138986.5U Active CN205388922U (en) | 2015-12-31 | 2015-12-31 | Composite covering has series gap metal oxide lightning arrester for 420kV alternating current transmission line |
Country Status (1)
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| CN (1) | CN205388922U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107422236A (en) * | 2017-08-31 | 2017-12-01 | 南方电网科学研究院有限责任公司 | The dry arcing distance choosing method of 500kVCT sleeve pipes |
| CN107490751A (en) * | 2017-08-31 | 2017-12-19 | 南方电网科学研究院有限责任公司 | 500kV bushing shell for transformer dry arcing distance choosing methods |
| CN107561421A (en) * | 2017-08-31 | 2018-01-09 | 中国南方电网有限责任公司电网技术研究中心 | 500kV porcelain strut insulator dry arcing distance choosing methods |
-
2015
- 2015-12-31 CN CN201521138986.5U patent/CN205388922U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107422236A (en) * | 2017-08-31 | 2017-12-01 | 南方电网科学研究院有限责任公司 | The dry arcing distance choosing method of 500kVCT sleeve pipes |
| CN107490751A (en) * | 2017-08-31 | 2017-12-19 | 南方电网科学研究院有限责任公司 | 500kV bushing shell for transformer dry arcing distance choosing methods |
| CN107561421A (en) * | 2017-08-31 | 2018-01-09 | 中国南方电网有限责任公司电网技术研究中心 | 500kV porcelain strut insulator dry arcing distance choosing methods |
| CN107490751B (en) * | 2017-08-31 | 2020-06-30 | 南方电网科学研究院有限责任公司 | Dry arc distance selection method for 500kV transformer bushing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180426 Address after: 710016 Kai Xin mansion 130, Weiyang Road, Xi'an, Shaanxi. Co-patentee after: China XD Electronic Corporation Patentee after: XI'AN XD ARRESTER CO., LTD. Address before: No. 7, Tang Xing Road, Xi'an, Shaanxi Province Patentee before: China XD Electronic Corporation |
|
| TR01 | Transfer of patent right |