CN104392811A - Gapless line type metal oxide lightning protection device and method for transmission lines - Google Patents
Gapless line type metal oxide lightning protection device and method for transmission lines Download PDFInfo
- Publication number
- CN104392811A CN104392811A CN201410702042.XA CN201410702042A CN104392811A CN 104392811 A CN104392811 A CN 104392811A CN 201410702042 A CN201410702042 A CN 201410702042A CN 104392811 A CN104392811 A CN 104392811A
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- China
- Prior art keywords
- metal oxide
- transmission line
- lightning arrester
- type metal
- disconnector
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 49
- 229910044991 metal oxide Inorganic materials 0.000 title claims abstract description 28
- 150000004706 metal oxides Chemical class 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000000725 suspension Substances 0.000 claims abstract description 22
- 239000012212 insulator Substances 0.000 claims abstract description 13
- 230000000694 effects Effects 0.000 claims abstract description 8
- 238000009413 insulation Methods 0.000 claims abstract description 5
- 239000004020 conductor Substances 0.000 claims description 21
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 230000009466 transformation Effects 0.000 abstract 1
- 208000025274 Lightning injury Diseases 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
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Abstract
The invention provides a gapless line type metal oxide lightning protection device and method for transmission lines. The transmission lines of power grids are mainly built in the regions with intense thunder and lightning activities. In the thunderstorm seasons every year, lightning flashover induced trip of the transmission lines occurs frequently, which directly affects safe operations of the power grids and poses a grave threat. The gapless line type metal oxide lightning protection device for the transmission lines comprises a cantilever support (8), wherein the cantilever support is connected with a suspension device (9); the suspension device is connected with an insulator string (10); the insulator string is connected with a transmission line (11); the transmission line is connected with a suspension clamp (1); the suspension clamp is connected with a disconnector (3); the disconnector is connected with a line lightning arrester (4); the line lightning arrester is connected with a suspension mechanism (6); the suspension mechanism is connected with a locking pin (7). The device and the method are used for protecting insulation of alternating current transmission and transformation equipment.
Description
technical field:
the present invention relates to a kind of transmission line gapless line type metal oxide lightning arrester and lightning protection method, be applicable to the overvoltage protection fields such as transformer, transmission line, switchboard, switch cubicle, electric metering box, vacuum switch, parallel capacitor, electric rotating machine and semiconductor device.
background technology:
the effect of lightning arrester is used to protect the electrical equipment that in electric power system, various electric equipment impacts from lightning overvoltage, switching overvoltage, Frequency Transient Overvoltage and damages.The type of lightning arrester mainly contains portable protective gaps, valve-type arrester and zinc oxide arrester.The transmission line of electrical network is in the strong area of lightening activity substantially, annual thunderstorm season, transmission line lightning stroke flashover tripping operation is frequent, the safe operation that directly affects electrical network constitutes serious threat, for the problem that transmission line lightning stroke trip-out rate is high, takes some measures, as increased insulation sub-pieces number, reduce pole tower ground resistance etc., but lightening activity is strong, soil resistivity is high, the area of complicated topographical conditions because these transmission lines are in substantially, actual effect is not good.
summary of the invention:
the object of this invention is to provide a kind of transmission line gapless line type metal oxide lightning arrester and lightning protection method.
above-mentioned object is realized by following technical scheme:
a kind of for transmission line gapless line type metal oxide lightning arrester, its composition comprises: cantilever shalving, described cantilever shalving is connected with extension device for hoisting, described extension device for hoisting is connected with insulator string, and described insulator string is connected with power transmission line, and described power transmission line is connected with suspension clamp, described suspension clamp is connected with disconnector, described disconnector is connected with leakage conductor, and described leakage conductor is connected with hitch, and described hitch is connected with pin.
described for transmission line gapless line type metal oxide lightning arrester, described suspension clamp and described disconnector are connected with annealed copper wire, and described leakage conductor top is connected with and connects counter.
described for transmission line gapless line type metal oxide lightning arrester, described suspension clamp is connected with described disconnector by bolt, and the annulus of described leakage conductor lower end is fixed on described suspension clamp screw rod.
described for transmission line gapless line type metal oxide lightning arrester, the lower end of described leakage conductor is connected with described transmission line with jumper by described disconnector, the hitch that described leakage conductor upper end is installed is fixed on described cantilever, and uses jumper reliable ground.
the described lightning protection method for transmission line gapless line type metal oxide lightning arrester; the method comprises the steps: that described leakage conductor adopts metal oxide resistance as core parts; utilize the non-linear behavior of metal oxide excellence; solve the transmission circuit insulator string flashover problem because thunder and lightning causes; when there is atmospheric over-voltage or switching overvoltage in system; resistor disc presents low resistance; residual voltage on lightning arrester is made to be limited in below permissible value; simultaneously stability overvoltage energy, thus reliably protecting is provided to transmission line.Under normal operating voltage, resistor disc presents high resistance, makes the electric current flowing through lightning arrester very little, serves the effect of insulation isolation.
beneficial effect of the present invention:
1. the present invention is connected with transmission line by disconnector; under lightning arrester normal operation; disconnector should be failure to actuate; to ensure the protective value of lightning arrester; in abnormal cases, when the fault current passed through causes lightning arrester to damage, disconnector can make rapidly lightning arrester automatically and transmission line forever depart from; removal system sustained fault, the system of guarantee pays no attention to disconnected normal power supply.Meanwhile, the lightning arrester observability giving damage departs to be proved, easy examinee finds, makes it to be changed in time.
2. the present invention is owing to being protection circuit insulator; different from power station type protection of arrester substation equipment; its level of protection can be much higher than power station type lightning arrester; press the 1.3 times considerations higher than converting equipment of the minimum withstand voltage level of line insulator, the residual voltage of the thunder and lightning residual voltage comparable power station type lightning arrester of line type arrester without gaps improves 1.3 times.
3., after thunder and lightning residual voltage of the present invention improves, direct current 1mA reference voltage U1mA also corresponding raising, had both reduced the chargeability of lightning arrester, had also improved the operational reliability of lightning arrester, also reduced the switching overvoltage electric current by lightning arrester simultaneously.
4. the present invention is in manufacture craft; be by metal oxide resistance when pressing; with double strength glass fiber looping, solidification; with import high quality silicon rubber general injection, sulfidization molding; its explosion-proof performance is improved greatly; and there is compact conformation, good airproof performance, the protection response feature such as fast, lightweight, can be arranged on transmission line easily.The intrinsic hydrophobicity of silicon rubber makes it have good resistant characteristic.
accompanying drawing illustrates:
accompanying drawing 1 is structural representation of the present invention.
accompanying drawing 2 is structural representations of suspension clamp.
accompanying drawing 3 is left views of accompanying drawing 2.
embodiment:
embodiment 1:
a kind of for transmission line gapless line type metal oxide lightning arrester, its composition comprises: cantilever shalving 8, described cantilever shalving is connected with extension device for hoisting 9, described extension device for hoisting is connected with insulator string 10, described insulator string is connected with power transmission line 11, described power transmission line is connected with suspension clamp 1, described suspension clamp is connected with disconnector 3, described disconnector is connected with leakage conductor 4, described leakage conductor is connected with hitch 6, and described hitch is connected with pin 7.
embodiment 2:
according to embodiment 1 for transmission line gapless line type metal oxide lightning arrester, described suspension clamp and described disconnector are connected with annealed copper wire 2, and described leakage conductor top is connected with and connects counter 5.
embodiment 3:
according to embodiment 1 or 2 for transmission line gapless line type metal oxide lightning arrester, described suspension clamp is connected with described disconnector by bolt, and the annulus of described leakage conductor lower end is fixed on described suspension clamp screw rod.
embodiment 4:
according to embodiment 1 or 2 or 3 for transmission line gapless line type metal oxide lightning arrester, the lower end of described leakage conductor is connected with described transmission line with jumper by described disconnector, the hitch that described leakage conductor upper end is installed is fixed on described cantilever, and uses jumper reliable ground.
embodiment 5:
a kind of lightning protection method for transmission line gapless line type metal oxide lightning arrester described in embodiment 1-4, the method comprises the steps: that described leakage conductor adopts metal oxide resistance as core parts, utilize the non-linear behavior of metal oxide excellence, solve the transmission circuit insulator string flashover problem because thunder and lightning causes, when there is atmospheric over-voltage or switching overvoltage in system, resistor disc presents low resistance, residual voltage on lightning arrester is made to be limited in below permissible value, simultaneously stability overvoltage energy, thus reliably protecting is provided to transmission line.Under normal operating voltage, resistor disc presents high resistance, makes the electric current flowing through lightning arrester very little, serves the effect of insulation isolation.
Claims (5)
1. one kind for transmission line gapless line type metal oxide lightning arrester, its composition comprises: cantilever shalving, it is characterized in that: described cantilever shalving is connected with extension device for hoisting, described extension device for hoisting is connected with insulator string, described insulator string is connected with power transmission line, described power transmission line is connected with suspension clamp, described suspension clamp is connected with disconnector, described disconnector is connected with leakage conductor, described leakage conductor is connected with hitch, and described hitch is connected with pin.
2. according to claim 1 for transmission line gapless line type metal oxide lightning arrester, it is characterized in that: described suspension clamp and described disconnector are connected with annealed copper wire, described leakage conductor top is connected with and connects counter.
3. according to claim 1 and 2 for transmission line gapless line type metal oxide lightning arrester, it is characterized in that: described suspension clamp is connected with described disconnector by bolt, the annulus of described leakage conductor lower end is fixed on described suspension clamp screw rod.
4. according to claim 1 or 2 or 3 for transmission line gapless line type metal oxide lightning arrester, it is characterized in that: the lower end of described leakage conductor is connected with described transmission line with jumper by described disconnector, the hitch that described leakage conductor upper end is installed is fixed on described cantilever, and uses jumper reliable ground.
5. one kind utilizes the method for carrying out taking shelter from the thunder for transmission line gapless line type metal oxide lightning arrester described in claim 1-4, it is characterized in that: the method comprises the steps: that described leakage conductor adopts metal oxide resistance as core parts, utilize the non-linear behavior of metal oxide excellence, solve the transmission circuit insulator string flashover problem because thunder and lightning causes, when there is atmospheric over-voltage or switching overvoltage in system, resistor disc presents low resistance, residual voltage on lightning arrester is made to be limited in below permissible value, simultaneously stability overvoltage energy, thus reliably protecting is provided to transmission line, under normal operating voltage, resistor disc presents high resistance, make the electric current flowing through lightning arrester very little, serve the effect of insulation isolation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410702042.XA CN104392811A (en) | 2014-11-28 | 2014-11-28 | Gapless line type metal oxide lightning protection device and method for transmission lines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410702042.XA CN104392811A (en) | 2014-11-28 | 2014-11-28 | Gapless line type metal oxide lightning protection device and method for transmission lines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104392811A true CN104392811A (en) | 2015-03-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410702042.XA Withdrawn CN104392811A (en) | 2014-11-28 | 2014-11-28 | Gapless line type metal oxide lightning protection device and method for transmission lines |
Country Status (1)
| Country | Link |
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| CN (1) | CN104392811A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107482566A (en) * | 2017-09-08 | 2017-12-15 | 中国电力科学研究院 | Method and system for suppressing operation overvoltage of UHV line |
| CN108462140A (en) * | 2018-03-27 | 2018-08-28 | 国网冀北电力有限公司承德供电公司 | A kind of thunder resisting equipment of transmission line of electricity |
| CN110814723A (en) * | 2019-11-22 | 2020-02-21 | 南阳金牛电气有限公司 | Automatic assembly device and packaging process for lightning arrester |
-
2014
- 2014-11-28 CN CN201410702042.XA patent/CN104392811A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107482566A (en) * | 2017-09-08 | 2017-12-15 | 中国电力科学研究院 | Method and system for suppressing operation overvoltage of UHV line |
| CN108462140A (en) * | 2018-03-27 | 2018-08-28 | 国网冀北电力有限公司承德供电公司 | A kind of thunder resisting equipment of transmission line of electricity |
| CN110814723A (en) * | 2019-11-22 | 2020-02-21 | 南阳金牛电气有限公司 | Automatic assembly device and packaging process for lightning arrester |
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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 |