CN104393585A - Overhead insulated wire over-voltage protection device with dual protection and protection method thereof - Google Patents
Overhead insulated wire over-voltage protection device with dual protection and protection method thereof Download PDFInfo
- Publication number
- CN104393585A CN104393585A CN201410702192.0A CN201410702192A CN104393585A CN 104393585 A CN104393585 A CN 104393585A CN 201410702192 A CN201410702192 A CN 201410702192A CN 104393585 A CN104393585 A CN 104393585A
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- China
- Prior art keywords
- current limiting
- limiting element
- drainage ball
- voltage
- lightning
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Links
- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000009977 dual effect Effects 0.000 title abstract 4
- 239000012212 insulator Substances 0.000 claims abstract description 26
- 239000004020 conductor Substances 0.000 claims description 20
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 12
- 239000011787 zinc oxide Substances 0.000 claims description 6
- 230000001012 protector Effects 0.000 claims description 5
- 230000006698 induction Effects 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 230000015556 catabolic process Effects 0.000 abstract description 3
- 230000004888 barrier function Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000009422 external insulation Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Emergency Protection Circuit Devices (AREA)
Abstract
(b) Provided is an overhead insulated wire over-voltage protection device with dual protection and protection method thereof. As in recent years, the national urban and rural electric network is massively reconstructed, more and more urban distribution networks massively employ overhead insulated wires, direct stroke lightning over-voltage or induced over-voltage caused by lightning stroking the overhead insulated wires is prone to leading flashover or breakdown of insulators. An overhead insulated wire over-voltage protection device with dual protection comprises insulated wires ((/b)(b)1(/b)(b)), the insulated wires are connected with insulators ((/b)(b)2(/b)(b)), the insulators are respectively connected with electric current guide rings ((/b)(b)6(/b)(b)) and cross arms ((/b)(b)7(/b)(b)); the cross arms are connected with connection abutment plates ((/b)(b)8(/b)(b)), the connection abutment plates are connected with electric current limiting members ((/b)(b)5(/b)(b)), the electric current limiting members are connected with electric current guide balls ((/b)(b)4(/b)(b)) of the electric current limiting members; and the electric guide balls of the electric current limiting members are connected with electric current guide balls ((/b)(b)3(/b)(b)) of the wires. The overhead insulated wire over-voltage protection device with dual protection and protection method thereof are applied to over-voltage protection of overhead insulated wires. (/b).
Description
technical field:
the present invention relates to one and there is duplicate protection overhead insulation-line over-voltage protection apparatus and guard method, be applied to the protection field of electrical network, power transmission and transformation pressure.
background technology:
along with the extensive upgrading urban and rural power grids of China in recent years, increasing urban power distribution network, the whole nation adopts suspended insulated guide wire circuit in a large number, the direct attack lightning overvoltage caused because of thunderbolt insulated overhead line or induction overvoltage very easily cause insulator arc-over or puncture, the breakdown point that power frequency arc concentrates on insulating barrier causes insulated circuit to melt broken string, meanwhile, the statistical magnitude of insulated circuit generation lightning-caused breaking and insulator breakdown accident is also in continuous ascendant trend, and increase along with insulated conductor line length and sharply rise, and become the main contributor of serious threat distribution network line safe operation, therefore, how to properly settle lightning-caused breaking problem, to guarantee that the safe operation of overhead insulating power distribution network to have become in national distribution network system a major issue in the urgent need to address.
summary of the invention:
the object of this invention is to provide one and there is duplicate protection overhead insulation-line over-voltage protection apparatus and guard method.
above-mentioned object is realized by following technical scheme:
one has duplicate protection overhead insulation-line over-voltage protection apparatus; its composition comprises: insulated conductor; insulated conductor is connected with insulator; described insulator is connected with draining ring, cross-arm respectively; described cross-arm is connected with connecting struts plate; described connecting struts plate is connected with current limiting element, and described current limiting element is connected with current limiting element drainage ball, and described current limiting element drainage ball is connected with wire drainage ball.
described has duplicate protection overhead insulation-line over-voltage protection apparatus; the top of described current limiting element body is fixed with current limiting element drainage ball; bottom is fixed on connecting struts plate one end; the connecting struts plate other end is fixed on insulator lower end; and couple together with circuit cross-arm; separately on wire, fix a wire drainage ball, between current limiting element drainage ball and wire drainage ball, form a standard series connected gap.
described has duplicate protection overhead insulation-line over-voltage protection apparatus; described insulated conductor must be placed in the groove at insulator top; gap between described draining ring and described insulated conductor must control within the scope of 60-100mm; gap between described draining ring and described insulator must evenly, control in 25 ± 5mm.
described has duplicate protection overhead insulation-line over-voltage protection apparatus, and described connecting struts plate is bolted, and can regulate the height of connecting struts plate.
the described guard method with duplicate protection overhead insulation-line over-voltage protection apparatus, the method comprises the steps: to be subject to Lightning Over-voltage when circuit, when induction overvoltage not yet reaches insulator arc-over, wire drainage ball and protector current limiting element drainage ball gap start to put charged, lead lightning current zinc oxide current limiting element afterwards, lightning current discharges through zinc oxide current limiting element, power frequency continued flow then oxidized zinc current limiting element blocks, reach lightning-arrest object, when circuit occur in short-term power-frequency overvoltage time, namely circuit is in weak insulation, lightning arrester still ensures electric discharge, by the synergy of the series gap that formed between draining ring and insulated conductor and current limiting element, effectively cut off power frequency continued flow, play a protective role.
beneficial effect of the present invention: 1. when circuit of the present invention normally runs; lightning-proof overvoltage protector for circuit insulators does not bear the effect of lasting power frequency operating voltage; " rest " state that is in is not easy aging; improve the safe operation that physical life is conducive to electric power system; even if current limiting element resistor disc is deteriorated; also be unlikely to the normal operation affecting circuit, the chargeability of current limiting element resistor valve sheet can obtain higher, and lightning impulse residual voltage can decrease.
must not divest the insulating barrier of insulated cable when the present invention installs, rainwater can not be caused to divest an infiltration along insulating barrier, the plain conductor of etching insulative cable; . current limiting element is only under the lightning overvoltage effect of certain amplitude after sphere gap action, and current limiting element body is just in running order, and therefore its external insulation level can lower than arrester without gaps.3. the present invention is on the circuit of normal design, there is the ability of enough tolerance switching overvoltages, gap length can select the action avoiding switching overvoltage effect, greatly can alleviate the pressure of current limiting element operating duty test like this, current limiting element can not be caused to hold can't stand and damage, cause short circuit grounding, cause insulated cable break, insulator dodge fall or puncture;
even if when 4. the present invention has big current to be caused current limiting element to hold by current limiting element to can't stand damage, because there being series connection sphere gap isolation features, so can not cause short circuit grounding, cause insulated conductor breakage, insulator dodges, and guarantees the safety of electric power system.
the present invention, by the synergy of the series gap that formed between draining ring and insulated conductor and current limiting element, effectively cuts off power frequency continued flow, avoids the line-outage contingency of insulated conductor after thunderbolt; Safe and reliable to operation, non-maintaining, even if because of the damage of abnormal conditions protector, because there being the buffer action of series gap, also circuit insulation coordination can not be affected, guaranteeing the security of operation of electric power system
accompanying drawing illustrates:
accompanying drawing 1 is structural representation of the present invention.
embodiment:
embodiment 1:
one has duplicate protection overhead insulation-line over-voltage protection apparatus; its composition comprises: insulated conductor 1; insulated conductor is connected with insulator 2; described insulator is connected with draining ring 6, cross-arm 7 respectively; described cross-arm is connected with connecting struts plate 8; described connecting struts plate is connected with current limiting element 5, and described current limiting element is connected with current limiting element drainage ball 4, and described current limiting element drainage ball is connected with wire drainage ball 3.
embodiment 2:
according to embodiment 1, there is duplicate protection overhead insulation-line over-voltage protection apparatus; the top of described current limiting element body is fixed with current limiting element drainage ball; bottom is fixed on connecting struts plate one end; the connecting struts plate other end is fixed on insulator lower end; and couple together with circuit cross-arm; separately on wire, fix a wire drainage ball, between current limiting element drainage ball and wire drainage ball, form a standard series connected gap.
embodiment 3:
according to embodiment 1 or 2, there is duplicate protection overhead insulation-line over-voltage protection apparatus; described insulated conductor must be placed in the groove at insulator top; gap between described draining ring and described insulated conductor must control within the scope of 60-100mm; gap between described draining ring and described insulator must evenly, control in 25 ± 5mm.
embodiment 4:
according to embodiment 1 or 2 or 3, have duplicate protection overhead insulation-line over-voltage protection apparatus, described connecting struts plate is bolted, and can regulate the height of connecting struts plate.
embodiment 5:
one utilizes has the method that duplicate protection overhead insulation-line over-voltage protection apparatus carries out protecting described in embodiment 1-4, the method comprises the steps: to be subject to Lightning Over-voltage when circuit, when induction overvoltage not yet reaches insulator arc-over, wire drainage ball and protector current limiting element drainage ball gap start to put charged, lead lightning current zinc oxide current limiting element afterwards, lightning current discharges through zinc oxide current limiting element, power frequency continued flow then oxidized zinc current limiting element blocks, reach lightning-arrest object, when circuit occur in short-term power-frequency overvoltage time, namely circuit is in weak insulation, lightning arrester still ensures electric discharge, by the synergy of the series gap that formed between draining ring and insulated conductor and current limiting element, effectively cut off power frequency continued flow, play a protective role.
Claims (5)
1. one kind has duplicate protection overhead insulation-line over-voltage protection apparatus; its composition comprises: insulated conductor; it is characterized in that: insulated conductor is connected with insulator; described insulator is connected with draining ring, cross-arm respectively; described cross-arm is connected with connecting struts plate; described connecting struts plate is connected with current limiting element, and described current limiting element is connected with current limiting element drainage ball, and described current limiting element drainage ball is connected with wire drainage ball.
2. according to claim 1 have duplicate protection overhead insulation-line over-voltage protection apparatus; it is characterized in that: the top of described current limiting element body is fixed with current limiting element drainage ball; bottom is fixed on connecting struts plate one end; the connecting struts plate other end is fixed on insulator lower end; and couple together with circuit cross-arm; separately on wire, fix a wire drainage ball, between current limiting element drainage ball and wire drainage ball, form a standard series connected gap.
3. according to claim 1 and 2 have duplicate protection overhead insulation-line over-voltage protection apparatus; it is characterized in that: described insulated conductor must be placed in the groove at insulator top; gap between described draining ring and described insulated conductor must control within the scope of 60-100mm; gap between described draining ring and described insulator must evenly, control in 25 ± 5mm.
4. according to claim 1 or 2 or 3, there is duplicate protection overhead insulation-line over-voltage protection apparatus, it is characterized in that: described connecting struts plate is bolted, and can regulate the height of connecting struts plate.
5. one kind utilizes and has the method that duplicate protection overhead insulation-line over-voltage protection apparatus carries out protecting described in claim 1-4, it is characterized in that: the method comprises the steps: to be subject to Lightning Over-voltage when circuit, when induction overvoltage not yet reaches insulator arc-over, wire drainage ball and protector current limiting element drainage ball gap start to put charged, lead lightning current zinc oxide current limiting element afterwards, lightning current discharges through zinc oxide current limiting element, power frequency continued flow then oxidized zinc current limiting element blocks, reach lightning-arrest object, when circuit occur in short-term power-frequency overvoltage time, namely circuit is in weak insulation, lightning arrester still ensures electric discharge, by the synergy of the series gap that formed between draining ring and insulated conductor and current limiting element, effectively cut off power frequency continued flow, play a protective role.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410702192.0A CN104393585A (en) | 2014-11-28 | 2014-11-28 | Overhead insulated wire over-voltage protection device with dual protection and protection method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410702192.0A CN104393585A (en) | 2014-11-28 | 2014-11-28 | Overhead insulated wire over-voltage protection device with dual protection and protection method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104393585A true CN104393585A (en) | 2015-03-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410702192.0A Withdrawn CN104393585A (en) | 2014-11-28 | 2014-11-28 | Overhead insulated wire over-voltage protection device with dual protection and protection method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN104393585A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110867844A (en) * | 2019-12-30 | 2020-03-06 | 西安宝鑫自动化设备有限公司 | An environmentally friendly overhead overvoltage protector |
| CN111799769A (en) * | 2020-08-11 | 2020-10-20 | 安恒智能科技有限公司 | A multi-chamber air gap overvoltage protector |
-
2014
- 2014-11-28 CN CN201410702192.0A patent/CN104393585A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110867844A (en) * | 2019-12-30 | 2020-03-06 | 西安宝鑫自动化设备有限公司 | An environmentally friendly overhead overvoltage protector |
| CN111799769A (en) * | 2020-08-11 | 2020-10-20 | 安恒智能科技有限公司 | A multi-chamber air gap overvoltage protector |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20150304 |