CN114744488A - Arc blowing type lightning protection device for power distribution network - Google Patents
Arc blowing type lightning protection device for power distribution network Download PDFInfo
- Publication number
- CN114744488A CN114744488A CN202210265889.0A CN202210265889A CN114744488A CN 114744488 A CN114744488 A CN 114744488A CN 202210265889 A CN202210265889 A CN 202210265889A CN 114744488 A CN114744488 A CN 114744488A
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- lightning protection
- arc
- gap
- hardware fitting
- blower
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T4/00—Overvoltage arresters using spark gaps
- H01T4/10—Overvoltage arresters using spark gaps having a single gap or a plurality of gaps in parallel
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/42—Means for obtaining improved distribution of voltage; Protection against arc discharges
- H01B17/46—Means for providing an external arc-discharge path
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T1/00—Details of spark gaps
- H01T1/02—Means for extinguishing arc
- H01T1/08—Means for extinguishing arc using flow of arc-extinguishing fluid
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T4/00—Overvoltage arresters using spark gaps
- H01T4/02—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T4/00—Overvoltage arresters using spark gaps
- H01T4/08—Overvoltage arresters using spark gaps structurally associated with protected apparatus
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
- Insulators (AREA)
Abstract
The application discloses distribution network arc blowing formula lightning protection device, the device includes: the device comprises a first hardware fitting mechanism, a second hardware fitting mechanism, a current detector and an arc blower; through setting up first gold utensil mechanism and second gold utensil mechanism, can form the lightning protection clearance between pole and wire to through the distance of adjusting first clearance gold utensil and second clearance gold utensil, make the breakdown voltage in lightning protection clearance be less than the breakdown voltage of insulator on the pole, play the effect of protection insulator. When the current detector judges that the impact current exists, an impact current signal is sent to the arc blower; when the arc blower receives the impulse current signal, the current detector judges whether the impulse current exists or not within a first preset time, if so, the arc blower receives the impulse current signal and supplies air towards the lightning protection gap after the first preset time so that the electric arc formed on the lightning protection gap is extinguished, the electric arc is prevented from discharging on the lightning protection gap for a long time, and the protection effect on the insulator is improved.
Description
Technical Field
The application relates to lightning protection device technical field especially relates to a distribution network arc blowing formula lightning protection device.
Background
Due to the low insulation level of the distribution network, equipment in the distribution network may be damaged by direct lightning overvoltage or induced lightning overvoltage generated on the line. Therefore, a lightning protection device is required to be configured for the power distribution network. Considering that the performance price of the lightning arrester configuration is low, lightning protection gap devices such as a horn gap and a spherical gap which can be used by the power distribution network release overvoltage on a line from the gap by utilizing the properties of air insulation, wind power and the like, so as to protect protected equipment from the overvoltage.
And the horn clearance, spherical clearance etc. device can make the clearance sustain discharge under the condition that overvoltage persists, and lightning protection clearance probably loses original effect when serious, causes to be protected the harm of overvoltage by the equipment.
Disclosure of Invention
In view of this, the purpose of this application is to provide a distribution network arc blowing formula lightning protection device for solve the current not good problem of protective effect under the condition of lasting overvoltage of clearance lightning protection device.
In order to reach above-mentioned technical purpose, this application provides a distribution network arc blowing formula lightning protection device, its characterized in that includes: the device comprises a first hardware fitting mechanism, a second hardware fitting mechanism, a current detector and an arc blower;
the first hardware structure includes: the first gap hardware fitting and the first connecting hardware fitting;
the second hardware structure includes: the second gap hardware fitting and the second connecting hardware fitting;
the first connecting hardware fitting is arranged on the lead;
the second connecting hardware fitting is arranged on the electric pole;
the first gap hardware fitting is arranged on the first connecting hardware fitting;
the second gap hardware fitting is arranged on the second connecting hardware fitting;
a lightning protection gap is formed between the first gap hardware fitting and the second gap hardware fitting;
an insulator is arranged on the electric pole;
the breakdown voltage of the lightning protection gap is smaller than that of the insulator;
the arc blower is arranged on the second connecting hardware fitting and faces the lightning protection gap;
the distance between the first gap hardware fitting and the arc blower is larger than the length of the lightning protection gap;
the current detector is arranged on the second connecting hardware fitting and is electrically connected with the arc blower;
the current detector is used for judging whether an impulse current exists in the lightning protection gap or not, and if so, an impulse current signal is sent to the arc blower;
and the arc blower is used for supplying air to the lightning protection gap within the time from receiving the impulse current signal to a first preset time and when continuing to receive the impulse current signal.
Further, the breakdown voltage of the lightning protection gap is 80% to 90% of the breakdown voltage of the insulator.
Furthermore, the second connecting hardware fitting is a Y-shaped hardware fitting and comprises two extending ends;
the second gap fitting and the arc blower are respectively arranged on the two extending ends.
Further, the device also comprises a display screen;
the display screen is electrically connected with the current detector and is used for recording and displaying the times of the current detector detecting the impact current.
Further, the display screen is an LED dot matrix screen.
Further, the current detector is further configured to determine whether an impulse current exists in the lightning protection gap after a second preset time period elapses since the arc blower blows air, if so, send a wind power increase signal to the arc blower, and if not, send an air supply stop signal to the arc blower;
the arc blower is also used for increasing the wind power of the supplied air after receiving the wind power increasing signal and stopping the supplied air after receiving the air supply stopping signal.
Further, the method also comprises the following steps: a display screen;
the display screen is electrically connected with the current display and is used for displaying the number of times of the detected impact current.
It can be seen from above technical scheme that this application provides a distribution network arc blowing formula lightning protection device, and the device includes: the device comprises a first hardware fitting mechanism, a second hardware fitting mechanism, a current detector and an arc blower; through setting up first gold utensil mechanism and second gold utensil mechanism, can form the lightning protection clearance between pole and wire to through the distance of adjusting first clearance gold utensil and second clearance gold utensil, make the breakdown voltage in lightning protection clearance be less than the breakdown voltage of insulator on the pole, play the effect of protection insulator. When the current detector judges that the impact current exists, an impact current signal is sent to the arc blower; when the arc blower receives the impulse current signal, the current detector judges whether the impulse current exists or not within a first preset time, if so, the arc blower receives the impulse current signal and supplies air towards the lightning protection gap after the first preset time so that the electric arc formed on the lightning protection gap is extinguished, the electric arc is prevented from discharging on the lightning protection gap for a long time, and the protection effect on the insulator is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic view of an arc blowing type lightning protection device for a power distribution network according to an embodiment of the present application.
Detailed Description
The technical solutions of the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the scope of protection claimed herein.
In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected" and "connected" should be interpreted broadly, and may be, for example, a fixed connection, an exchangeable connection, an integrated connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements. Specific meanings of the above terms in the embodiments of the present application can be understood as specific cases by those of ordinary skill in the art.
The embodiment of the application discloses distribution network arc blowing formula lightning protection device.
Referring to fig. 1, an arc blowing type lightning protection device for a power distribution network provided in an embodiment of the present application includes: the device comprises a first hardware fitting mechanism 1, a second hardware fitting mechanism 2, a current detector 3 and an arc blower 4; the first fitting structure 1 includes: a first gap hardware 11 and a first connecting hardware 12; the second fitting structure 2 includes: a second gap fitting 21 and a second connection fitting 22; the first connecting hardware 12 is arranged on the lead 7; the second connecting hardware 22 is arranged on the electric pole 5; the first gap hardware 11 is arranged on the first connecting hardware 12; the second gap hardware 21 is arranged on the second connecting hardware 22; a lightning protection gap 6 is formed between the first gap fitting 11 and the second gap fitting 21; an insulator is arranged on the electric pole 5; the breakdown voltage of the lightning protection gap 6 is smaller than that of the insulator; the arc blower 4 is arranged on the second connecting hardware fitting 22 and faces the lightning protection gap 6; the distances between the first gap hardware fitting 11 and the second gap hardware fitting 21 and the arc blower 4 are both greater than the length of the lightning protection gap 6, so that the arc blower 4 is prevented from being damaged by overvoltage; the current detector 3 is disposed on the second link fitting 22 and electrically connected to the arc blower 4.
Specifically, one of the first connection fitting 12 and the second connection fitting 22 is mounted on the lead 7, and the other is mounted on the electric pole 5 and connected to the ground line 8 on the electric pole 5. Meanwhile, the current detector 3 and the arc blower 4 can be mounted on the first connecting hardware fitting 12 or the second connecting hardware fitting 22, so that when lightning strike occurs, the current detector 3 can detect impact current to enable the arc blower 4 to supply air towards the lightning protection gap 6; in the scheme, the protection device on the electric pole is an insulator for example, and other devices can be used in practical application.
In the scheme, the breakdown voltage of the lightning protection gap 6 is 80-90% of the breakdown voltage of the insulator, so that when lightning strike occurs, the voltage is firstly discharged from the lightning protection gap, and the effect of protecting the insulator is achieved.
It should be noted that, when lightning breaks down the lightning protection gap 6, the lightning protection gap 6 will form a discharge path, so that the lightning energy is released into the ground through the lightning protection gap 6. At this moment, if wind blows to lightning protection gap 6 and makes lightning protection gap 6 form electric arc, can make the electric field and the magnetic field of route change, have the risk that makes lightning protection gap 6's breakdown voltage rise to being greater than insulator breakdown voltage, lead to unable protection insulator. Through setting up the arc blower, can make the electric arc in lightning protection clearance extinguish, avoid the energy that the thunder and lightning produced to discharge on lightning protection clearance 6 for a long time and lead to equipment to be destroyed, avoid lightning protection clearance 6's breakdown voltage to rise simultaneously.
Further, in the present scheme, the second link fitting 2 is a Y-shaped fitting, and includes two extending ends; the second gap hardware 21 and the arc blower 4 are respectively arranged on the two extending ends, so that the number of parts can be reduced and the arc blower 4 can be arranged towards the lightning protection gap after being installed.
Further, a display screen 9 is also included; the display screen 9 is electrically connected with the current detector 3 and is used for recording and displaying the times of detecting the impact current by the current detector. In the scheme, the display screen 9 is an LED dot matrix screen, and can record the times of gap discharge and distinguish the discharge probability of different electric poles; the towers with the counted times show that the installed hardware is punctured for multiple times, and the towers with the punctured times can be maintained in a focused mode.
In the device, the current detector is used for judging whether the lightning protection gap has impulse current or not, and if so, sending an impulse current signal to the arc blower;
and the arc blower is used for supplying air to the lightning protection gap within the time from receiving the impulse current signal to a first preset time and when continuing to receive the impulse current signal.
After lightning strike occurs, if air is supplied to the lightning protection gap before the arc is not formed, the breakdown voltage of the lightning protection gap may be increased, so that the effect of protecting equipment cannot be achieved. Therefore, in the scheme, the arc blower 4 is arranged and supplies air to the lightning protection gap after the first preset time, so that the arc is formed, the arc at the gap can be extinguished, and the energy generated by lightning is prevented from discharging for a long time. The first preset time length can be adjusted according to the time length from lightning strike of the lightning protection gap 6 to electric arc generation in practical application.
Specifically, in the time from the lightning strike to the first preset time, the current detector 3 will continuously determine whether there is an impact current, and if the lightning strike is not enough to generate an arc, or the arc disappears by itself so that the current detector 3 determines that there is no current, the arc blower 4 may not supply air to the lightning protection gap 6, and the step S1 is returned to continuously detect. The first preset time period may be set according to a time period from the lightning strike to the generation of the impact current in actual use.
The current detector is also used for judging whether the lightning protection gap has impact current or not after the second preset time length elapses from the air supply of the arc blower, if so, sending a wind power increasing signal to the arc blower, and if not, sending an air supply stopping signal to the arc blower;
and the arc blower is also used for increasing the wind power of the supplied air after receiving the wind power increasing signal and stopping the supplied air after receiving the air supply stopping signal.
Specifically, after the arc blower 4 blows air and the current detector 3 passes through a second preset time period, the current detector 3 detects whether an impact current exists or not, whether the arc is successfully extinguished under the wind power level is judged, and if not, the arc blower 4 increases the wind power.
Further, this distribution network arc blowing formula lightning protection device including: a display screen; the display screen is used for displaying the number of times of the detected impact current.
Wherein, the display screen 9 can be electrically connected with the current detector 3 for recording and displaying the times of the current detector detecting the impact current.
In practical application, distribution network arc blowing type lightning protection devices can be installed on adjacent electric poles, and the distribution network arc blowing type lightning protection method provided by the embodiment is applied, so that step-by-step electric energy release of adjacent lines is realized.
Although the present invention has been described in detail with reference to examples, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention.
Claims (7)
1. The utility model provides a distribution network arc blowing formula lightning protection device which characterized in that includes: the device comprises a first hardware fitting mechanism, a second hardware fitting mechanism, a current detector and an arc blower;
the first hardware structure includes: the first gap hardware fitting and the first connecting hardware fitting;
the second hardware structure includes: the second gap hardware fitting and the second connecting hardware fitting;
the first connecting hardware fitting is arranged on the lead;
the second connecting hardware fitting is arranged on the electric pole;
the first gap hardware fitting is arranged on the first connecting hardware fitting;
the second gap hardware fitting is arranged on the second connecting hardware fitting;
a lightning protection gap is formed between the first gap fitting and the second gap fitting;
an insulator is arranged on the electric pole;
the breakdown voltage of the lightning protection gap is smaller than that of the insulator;
the arc blower is arranged on the second connecting hardware fitting and faces the lightning protection gap;
the distance between the first gap hardware fitting and the arc blower is larger than the length of the lightning protection gap;
the current detector is arranged on the second connecting hardware fitting and is electrically connected with the arc blower;
the current detector is used for judging whether impulse current exists in the lightning protection gap or not, and if so, sending an impulse current signal to the arc blower;
and the arc blower is used for supplying air to the lightning protection gap within the time from the receiving of the impact current signal to the first preset time and when the impact current signal is continuously received.
2. The arc blowing lightning protection device for power distribution networks according to claim 1, wherein the breakdown voltage of the lightning protection gap is 80% to 90% of the breakdown voltage of the insulator.
3. The arc blowing type lightning protection device for the power distribution network according to claim 1, wherein the second connection hardware is a Y-shaped hardware which comprises two extension ends;
the second gap hardware fitting and the arc blower are respectively arranged on the two extending ends.
4. The arc blowing type lightning protection device for power distribution networks according to claim 1, further comprising a display screen;
the display screen is electrically connected with the current detector and is used for recording and displaying the times of the current detector detecting the impact current.
5. The arc blowing type lightning protection device for power distribution networks of claim 4, wherein the display screen is an LED dot matrix screen.
6. The power distribution network arc blowing type lightning protection device according to claim 1, wherein the current detector is further configured to determine whether an impulse current exists in the lightning protection gap after a second preset time period elapses since the arc blower blows air, and if so, send a wind power increase signal to the arc blower, and if not, send an air supply stop signal to the arc blower;
the arc blower is also used for increasing the wind power of the supplied air after receiving the wind power increasing signal and stopping the supplied air after receiving the air supply stopping signal.
7. The arc blowing lightning protection device for power distribution networks of claim 1, further comprising: a display screen;
the display screen is electrically connected with the current display and is used for displaying the number of times of the detected impact current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210265889.0A CN114744488B (en) | 2022-03-17 | 2022-03-17 | Arc blowing type lightning protection device for power distribution network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210265889.0A CN114744488B (en) | 2022-03-17 | 2022-03-17 | Arc blowing type lightning protection device for power distribution network |
Publications (2)
| Publication Number | Publication Date |
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| CN114744488A true CN114744488A (en) | 2022-07-12 |
| CN114744488B CN114744488B (en) | 2023-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210265889.0A Active CN114744488B (en) | 2022-03-17 | 2022-03-17 | Arc blowing type lightning protection device for power distribution network |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115332946A (en) * | 2022-07-28 | 2022-11-11 | 国网河南省电力公司新野县供电公司 | Arc blowing type lightning protection device for power distribution network |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101964520A (en) * | 2009-07-21 | 2011-02-02 | 王巨丰 | Gas-blast arc extinction lightning protection gap for power equipment |
| CN102263376A (en) * | 2010-05-25 | 2011-11-30 | 王巨丰 | Gas arc extinguishing apparatus |
| CN107481823A (en) * | 2017-09-20 | 2017-12-15 | 广东电网有限责任公司湛江供电局 | A kind of anti-lightning strike tripping operation self arc parallel connection gaps system of power distribution network |
-
2022
- 2022-03-17 CN CN202210265889.0A patent/CN114744488B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101964520A (en) * | 2009-07-21 | 2011-02-02 | 王巨丰 | Gas-blast arc extinction lightning protection gap for power equipment |
| CN102263376A (en) * | 2010-05-25 | 2011-11-30 | 王巨丰 | Gas arc extinguishing apparatus |
| CN107481823A (en) * | 2017-09-20 | 2017-12-15 | 广东电网有限责任公司湛江供电局 | A kind of anti-lightning strike tripping operation self arc parallel connection gaps system of power distribution network |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115332946A (en) * | 2022-07-28 | 2022-11-11 | 国网河南省电力公司新野县供电公司 | Arc blowing type lightning protection device for power distribution network |
| CN115332946B (en) * | 2022-07-28 | 2023-07-14 | 国网河南省电力公司新野县供电公司 | Arc blowing type lightning protection device for power distribution network |
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| Publication number | Publication date |
|---|---|
| CN114744488B (en) | 2023-09-29 |
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