CN204332571U - The special gapless metal-oxide lighting arrester of photovoltaic generation - Google Patents
The special gapless metal-oxide lighting arrester of photovoltaic generation Download PDFInfo
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- CN204332571U CN204332571U CN201420851683.7U CN201420851683U CN204332571U CN 204332571 U CN204332571 U CN 204332571U CN 201420851683 U CN201420851683 U CN 201420851683U CN 204332571 U CN204332571 U CN 204332571U
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- zinc oxide
- resistance sheet
- oxide resistance
- sheet group
- special
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Abstract
The utility model discloses the special gapless metal-oxide lighting arrester of a kind of photovoltaic generation, comprise composite sheath, the the first zinc oxide resistance sheet group set gradually from top to bottom in composite sheath, second zinc oxide resistance sheet group, 3rd zinc oxide resistance sheet group and the 4th zinc oxide resistance sheet group, 4th zinc oxide resistance sheet group ground connection, first zinc oxide resistance sheet group and the second zinc oxide resistance sheet group are all parallel with filter capacitor, overvoltage is absorbed by four groups of zinc oxide resistance sheet groups, filter capacitor absorbs the high order harmonic component produced in photovoltaic discharge system, the absorption to the lightning overvoltage produced in photovoltaic generating system and switching overvoltage can be realized, the composite sheath of the utility model tool organic insulation, adopt one-shot forming sulfuration pattern, this composite sheath has good seal performance, installation and transportation are convenient, the low feature of cost.
Description
Technical field
The utility model belongs to power high voltage appliance field, is specifically related to the special gapless metal-oxide lighting arrester of a kind of photovoltaic generation.
Background technology
At present, along with the use of clear energy sources, photovoltaic generation is more and more widely used, but, because photovoltaic generation exists following problem:
(1) by solar radiation, spread of voltage, because solar energy is natural phenomena, so the energy of Different periods solar energy is unstable, so the voltage swing sending electric energy is unstable, so voltage fluctuation is more severe, easily produces switching overvoltage.
(2) because photovoltaic panel capacity is very little, quantity is many, be incorporated into the power networks complexity, easily produces switching overvoltage.
(3) owing to there is rectification and inverter in a large number in photovoltaic system, easily produces high order harmonic component, very large on lightning arrester safe operation impact.
(4) photovoltaic generation place place open field, and take up an area wide, be easily struck by lightning, so lightning overvoltage is also more frequent.
Utility model content
The purpose of this utility model is to overcome above-mentioned deficiency, provides a kind of photovoltaic generation special gapless metal-oxide lighting arrester, reliably can realize the absorption to the lightning overvoltage produced in photovoltaic generating system and switching overvoltage.
In order to achieve the above object, the utility model comprises composite sheath, the the first zinc oxide resistance sheet group set gradually from top to bottom in composite sheath, the second zinc oxide resistance sheet group, the 3rd zinc oxide resistance sheet group and the 4th zinc oxide resistance sheet group, 4th zinc oxide resistance sheet group ground connection, the first zinc oxide resistance sheet group and the second zinc oxide resistance sheet group are all parallel with filter capacitor.
The transducer with external monitoring Instrument connection is connected with before described 4th zinc oxide resistance sheet group ground connection.
Grading ring is provided with between adjacent zinc oxide resistance sheet group.
Described first zinc oxide resistance sheet group, the second zinc oxide resistance sheet group, the 3rd zinc oxide resistance sheet group and the 4th zinc oxide resistance sheet group all adopt square wave discharge capacity to be the resistor disc of 800A.
Described first zinc oxide resistance sheet group, the second zinc oxide resistance sheet group, the 3rd zinc oxide resistance sheet group and the 4th zinc oxide resistance sheet group include 1 ~ 5 zinc oxide resistance sheet, and the reference voltage of single zinc oxide resistance sheet is 5.0 ~ 5.5 kilovolts.
Described zinc oxide resistance sheet outer setting has epoxy glass fabric cylinder, and adopts electrode to fix at zinc oxide resistance sheet two ends.
Compared with prior art, the utility model absorbs overvoltage by four groups of zinc oxide resistance sheet groups, filter capacitor absorbs the high order harmonic component produced in photovoltaic discharge system, the absorption to the lightning overvoltage produced in photovoltaic generating system and switching overvoltage can be realized, the composite sheath of the utility model tool organic insulation, adopt one-shot forming sulfuration pattern, this composite sheath has good seal performance, installation and transportation are convenient, the low feature of cost.
Further, the utility model is provided with transducer, can with external monitoring Instrument connection, realize lightning arrestor movement number of times monitoring.
Further, the utility model is provided with grading ring, can improve voltage's distribiuting, eliminates stray capacitance over the ground and causes the uneven situation of resistor disc voltage's distribiuting.
Further, the utility model adopts square wave discharge capacity to be the resistor disc of 800A, can improve lightning arrester square wave discharge capacity, thus improves the overvoltage absorbability of lightning arrester.
Further, the utility model adopts pressure smaller, the zinc oxide resistance sheet of excellent performance, thus lightning arrester direct current 1mA reference voltage can be improved, reduce the chargeability of zinc oxide resistance sheet, change during lightning arrester traditional parameters uses on photovoltaic generation and hold flimsy defect, improve the useful life of lightning arrester.
Further, zinc oxide resistance sheet of the present utility model is contained in epoxy glass fabric cylinder, and two ends electrode is fixed, thus realizes product positiver sealing.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is outward appearance front view of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
See Fig. 1 and Fig. 2, the utility model comprises composite sheath 11, the the first zinc oxide resistance sheet group 1 set gradually from top to bottom in composite sheath 11, second zinc oxide resistance sheet group 2, 3rd zinc oxide resistance sheet group 3 and the 4th zinc oxide resistance sheet group 4, first zinc oxide resistance sheet group 1, second zinc oxide resistance sheet group 2, 3rd zinc oxide resistance sheet group 3 and the 4th zinc oxide resistance sheet group 4 all adopt square wave discharge capacity to be the resistor disc of 800A, 4th zinc oxide resistance sheet group 4 connects the rear ground connection with the transducer 10 of external monitoring Instrument connection, first zinc oxide resistance sheet group 1 is parallel with the first filter capacitor 5, second zinc oxide resistance sheet group 2 is parallel with the second filter capacitor 6, the first grading ring 7 is provided with between the first zinc oxide resistance sheet group 1 and the second zinc oxide resistance sheet group 2, the second grading ring 8 is provided with between the second zinc oxide resistance sheet group 2 and the 3rd zinc oxide resistance sheet group 3, the 3rd grading ring 9 is provided with between the 3rd zinc oxide resistance sheet group 3 and the 4th zinc oxide resistance sheet group 4.
First zinc oxide resistance sheet group 1, second zinc oxide resistance sheet group 2, the 3rd zinc oxide resistance sheet group 3 and the 4th zinc oxide resistance sheet group 4 include 1 ~ 5 zinc oxide resistance sheet, the reference voltage of single zinc oxide resistance sheet is 5.0 ~ 5.5 kilovolts, the outside of the first zinc oxide resistance sheet group 1, second zinc oxide resistance sheet group 2, the 3rd zinc oxide resistance sheet group 3 and the 4th zinc oxide resistance sheet group 4 is provided with epoxy glass fabric cylinder, and adopts electrode to fix at zinc oxide resistance sheet two ends.
The lightning arrester parameter of the utility model to 0.315kV to 35kV electric pressure makes clear stipulaties, as shown in table 1.
Table 1
Profile of the present utility model adopts organic composite structure, and zinc oxide resistance sheet is contained in epoxy glass fabric cylinder, and two ends electrode is fixed, and then uses a silicon rubber sulfuration outside, thus realizes product positiver sealing.Overvoltage is absorbed by four groups of zinc oxide resistance sheet groups, filter capacitor absorbs the high order harmonic component produced in photovoltaic discharge system, the absorption to the lightning overvoltage produced in photovoltaic generating system and switching overvoltage can be realized, grading ring can improve voltage's distribiuting, eliminate stray capacitance over the ground and cause the uneven situation of resistor disc voltage's distribiuting, transducer can realize the monitoring of lightning arrestor movement number of times by external detection instrument.
Claims (6)
1. the special gapless metal-oxide lighting arrester of photovoltaic generation, it is characterized in that: comprise composite sheath (11), the the first zinc oxide resistance sheet group (1) set gradually from top to bottom in composite sheath (11), the second zinc oxide resistance sheet group (2), the 3rd zinc oxide resistance sheet group (3) and the 4th zinc oxide resistance sheet group (4), 4th zinc oxide resistance sheet group (4) ground connection, the first zinc oxide resistance sheet group (1) and the second zinc oxide resistance sheet group (2) are all parallel with filter capacitor.
2. the special gapless metal-oxide lighting arrester of a kind of photovoltaic generation according to claim 1, is characterized in that: be connected with and the transducer of external monitoring Instrument connection (10) before described 4th zinc oxide resistance sheet group (4) ground connection.
3. the special gapless metal-oxide lighting arrester of a kind of photovoltaic generation according to claim 1, is characterized in that: be provided with grading ring between adjacent zinc oxide resistance sheet group.
4. the special gapless metal-oxide lighting arrester of a kind of photovoltaic generation according to claim 1, is characterized in that: described first zinc oxide resistance sheet group (1), the second zinc oxide resistance sheet group (2), the 3rd zinc oxide resistance sheet group (3) and the 4th zinc oxide resistance sheet group (4) all adopt square wave discharge capacity to be the resistor disc of 800A.
5. the special gapless metal-oxide lighting arrester of a kind of photovoltaic generation according to claim 1, it is characterized in that: described first zinc oxide resistance sheet group (1), the second zinc oxide resistance sheet group (2), the 3rd zinc oxide resistance sheet group (3) and the 4th zinc oxide resistance sheet group (4) include 1 ~ 5 zinc oxide resistance sheet, and the reference voltage of single zinc oxide resistance sheet is 5.0 ~ 5.5 kilovolts.
6. the special gapless metal-oxide lighting arrester of a kind of photovoltaic generation according to claim 1, is characterized in that: described zinc oxide resistance sheet outer setting has epoxy glass fabric cylinder, and adopts electrode to fix at zinc oxide resistance sheet two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420851683.7U CN204332571U (en) | 2014-12-27 | 2014-12-27 | The special gapless metal-oxide lighting arrester of photovoltaic generation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420851683.7U CN204332571U (en) | 2014-12-27 | 2014-12-27 | The special gapless metal-oxide lighting arrester of photovoltaic generation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204332571U true CN204332571U (en) | 2015-05-13 |
Family
ID=53168898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420851683.7U Expired - Fee Related CN204332571U (en) | 2014-12-27 | 2014-12-27 | The special gapless metal-oxide lighting arrester of photovoltaic generation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204332571U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105895282A (en) * | 2015-02-12 | 2016-08-24 | 西门子公司 | Overvoltage Arrester |
| CN108627786A (en) * | 2017-03-22 | 2018-10-09 | 中国电力科学研究院 | Different voltages waveform subscript quasi-electric field generating means and electric field measuring apparatus calibrating installation |
| CN109856443A (en) * | 2018-12-21 | 2019-06-07 | 云南电网有限责任公司西双版纳供电局 | A high-order harmonic voltage test system |
-
2014
- 2014-12-27 CN CN201420851683.7U patent/CN204332571U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105895282A (en) * | 2015-02-12 | 2016-08-24 | 西门子公司 | Overvoltage Arrester |
| CN108627786A (en) * | 2017-03-22 | 2018-10-09 | 中国电力科学研究院 | Different voltages waveform subscript quasi-electric field generating means and electric field measuring apparatus calibrating installation |
| CN108627786B (en) * | 2017-03-22 | 2020-10-09 | 中国电力科学研究院 | Electric field measuring instrument calibrating device |
| CN109856443A (en) * | 2018-12-21 | 2019-06-07 | 云南电网有限责任公司西双版纳供电局 | A high-order harmonic voltage test system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150513 Termination date: 20161227 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |