CN106451308A - 35kv/10kv common-tower distribution line lightning protection device - Google Patents
35kv/10kv common-tower distribution line lightning protection device Download PDFInfo
- Publication number
- CN106451308A CN106451308A CN201611012637.8A CN201611012637A CN106451308A CN 106451308 A CN106451308 A CN 106451308A CN 201611012637 A CN201611012637 A CN 201611012637A CN 106451308 A CN106451308 A CN 106451308A
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- CN
- China
- Prior art keywords
- line
- conductor
- lightning
- protection device
- lightning protection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G13/00—Installations of lightning conductors; Fastening thereof to supporting structure
- H02G13/40—Connection to earth
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/12—Overvoltage protection resistors
- H01C7/126—Means for protecting against excessive pressure or for disconnecting in case of failure
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G13/00—Installations of lightning conductors; Fastening thereof to supporting structure
- H02G13/80—Discharge by conduction or dissipation, e.g. rods, arresters, spark gaps
Abstract
The invention discloses a 35kv/10kv common-tower distribution line lightning protection device. According to the device, the 35kv/10kv common-tower distribution line comprises a primary loop circuit three-phase 35kv line above a straight-line pole tower and a primary loop circuit three-phase 10kv line below the straight-line pole tower, line arresters are installed on any two phases of the three-phase 10kv line, a lightning conductor support and a lightning conductor are installed on the tower top of a base pole tower, a down conductor and a grounding connector are arranged on the base pole tower and are connected with the lightning conductor support and the line arrester on a cross arm of the 10kv line. The 35kv/10kv common-tower distribution line lightning protection device has the advantages of being capable of lowering improvement cost and operation maintenance load, sharply lowering lightning trip-out rate of the 35kv/10kv common-tower distribution line and improving economic benefits.
Description
Technical field
The present invention relates to a kind of medium-voltage distribution circuit lightning protection device, close bar distribution line particularly to a kind of 35kV/10kV
Lightning protection device.
Background technology
Because domestic economy development is swift and violent, cost of land constantly raises, and takes up an area face to save line channel in city
Long-pending, often using increase shaft tower highly after the method for many times distribution lines is set up on same electric pole.There are different electric pressures
The distribution line of multichannel parallel lines on same tower is referred to as closing bar circuit, and it is exactly that most common of which is a kind of that 35kV/10kV closes bar distribution line.
What conventional paper, patent proposed is all the lightening arresting method of single time, multiple-loop line 35kV or 10kV distribution line, for example, invent specially
Profit " a kind of method of the anti-lightning strike broken string of 10kV insulated overhead line " (grant number：CN 102290775 B), patent of invention is " a kind of
35kV transmission line located Lightning Transformation method " (application number：201510269907.2), " one kind is used for utility model patent
The lightning protection device of double back distribution line " (grant number：CN 203423464 U).And in actual motion, there are a large amount of 35kV/10kV
Close bar distribution line, be not directed to the lightening arresting method that 35kV/10kV closes bar distribution line.
Content of the invention
It is an object of the present invention to provide a kind of 35kV/10kV closes bar distribution line lightning protection device, overcome existing 10kV distribution wire
The deficiency of road lightening arresting method, can be greatly reduced 35kV/10kV and close the tripping rate with lightning strike of bar distribution line and increase economic efficiency
Purpose.
In order to achieve the above object, the present invention is achieved through the following technical solutions：
A kind of 35kV/10kV closes bar distribution line lightning protection device, comprises：Base shaft tower, described base shaft tower lower end is arranged on ground
In face and perpendicular to the ground；It is disposed on first line cross-arm and the second circuit cross-arm of base shaft tower upper end, be provided with first
The first line insulator of line conductor, described first line insulator is arranged on first line cross-arm；It is provided with the second line
Second line insulator of line conductor, described second line insulator is arranged on the second circuit cross-arm；It is provided with keeping away of lightning conducter
Thunder line bracket, described lightning-arrest line bracket is arranged on base shaft tower top；First line arrester and the second leakage conductor, described
One leakage conductor is connected with any one phase line in triple line in the second line conductor, described second leakage conductor and second
In remaining in triple line in line conductor two phase line, any one phase line connects；Down conductor, described down conductor one
End is connected with the second leakage conductor with the first line arrester on lightning-arrest line bracket and the second circuit cross-arm；Described ground connection
The downlead other end is connected with grounding body；Described grounding body is located inside described ground；Thunder-strike current is propped up by described lightning conducter
The earth is introduced through down conductor and grounding body after frame, first line arrester and the second leakage conductor.
Preferably, described first line wire is three-phase 35kV line loop；Described second line conductor is three-phase 10kV
Circuit.
Preferably, described lightning-arrest line bracket and the center line of base shaft tower are parallel to each other.
Preferably, described ground is the level ground being in ground potential.
Preferably, described first line arrester and the second leakage conductor are metal oxide leakage conductor or excessively electric
Pressure protector.
Preferably, close in bar distribution line in described 35kV/10kV, every 2 or 4 base shaft towers, first line is installed and takes shelter from the thunder
Device and the second leakage conductor.
Preferably, the material that described lightning-arrest line bracket adopts is angle steel and is arranged on described 35kV/10kV conjunction bar distribution
On every foundation shaft tower in circuit.
Preferably, described down conductor and grounding body adopt galvanized steel bar material, and described down conductor and
Grounding body is arranged on every foundation shaft tower.
The present invention compared with prior art has advantages below：
The present invention is due to the lightning-arrest line bracket, down conductor and the grounding body that are provided with and in described 35kV/10kV
Close in bar distribution line, every 2 or 4 base shaft towers, first line arrester and the second leakage conductor are installed, it has reduction and changes
Cause this and operating maintenance workload, 35kV/10kV is greatly reduced and closes the tripping rate with lightning strike of bar distribution line and improve economic effect
The advantage of benefit.
Brief description
Fig. 1 is the structural representation of the 35kV/10kV conjunction bar distribution line being provided without lightning protection measures in prior art；
Fig. 2 is the structural representation that a kind of 35kV/10kV of the present invention closes bar distribution line lightning protection device.
Specific embodiment
Below in conjunction with accompanying drawing, by describing a preferably specific embodiment in detail, the present invention is further elaborated.
As shown in Fig. 2 a kind of 35kV/10kV closes bar distribution line lightning protection device, comprise：Base shaft tower 7, described base shaft tower 7
Lower end is arranged in ground 8, and vertical with ground 8；It is disposed on first line cross-arm 3 and second circuit of base shaft tower upper end
Cross-arm 6, is provided with the first line insulator 1 of first line wire 2, and described first line insulator 1 is arranged on first line
On cross-arm 3；It is provided with the second line insulator 5 of the second line conductor 4, described second line insulator 5 is arranged on the second line
On road cross-arm 6.
It is provided with the lightning-arrest line bracket 11 of lightning conducter 10, described lightning-arrest line bracket 11 is arranged on base shaft tower 7 top；First line
Arrester 9 and the second leakage conductor 14, described first line arrester 9 is any one with triple line in the second line conductor 4
Phase line connects, any one in remaining two phase line in described second leakage conductor 14 and triple line in the second line conductor 4
Phase line connects；On down conductor 12, described down conductor 12 one end and lightning-arrest line bracket 11 and the second circuit cross-arm 6
First line arrester 9 be connected with the second leakage conductor 14；Described down conductor 12 other end is connected with grounding body 13；
Described grounding body 13 is located inside described ground 8；Thunder-strike current by described lightning-arrest line bracket 11, first line arrester 9 with
The earth is introduced through down conductor 12 and grounding body 13 after second leakage conductor 14.
Described first line wire 2 is three-phase 35kV line loop；Described second line conductor 4 is three-phase 10kV circuit.
Described lightning-arrest line bracket 11 is parallel to each other with the center line of base shaft tower 7.
Described ground 8 is the level ground being in ground potential.
Described first line arrester 9 and the second leakage conductor 14 are metal oxide leakage conductor or overvoltage guarantor
Shield device.
Close in bar distribution line in described 35kV/10kV, every 2 or 4 base shaft tower 7 install first line arrester 9 with
Second leakage conductor 14.
The material that described lightning-arrest line bracket 9 adopts is angle steel and is arranged in described 35kV/10kV conjunction bar distribution line
Every foundation shaft tower 7 on.
Described down conductor 12 and grounding body 13 adopt galvanized steel bar material, and described down conductor 12 and connecing
Ground body 13 is arranged on every foundation shaft tower 7.
In the present embodiment, the first line insulator 1 being used is 35kV line insulator, using model FXBW-
35/100 rod insulator insulator, its 50% critical flashover voltage under standard lightning wave takes 250kV.
The 35kV line conductor 2 being used is LGJ-240/30 shaped steel core aluminum stranded wire, and span takes 80m, wire current-carrying part
Outer radius 10.8mm, D.C. resistance takes 0.1181 Ω/km, and sag takes 2.3m.
The first line cross-arm 3 being used adopts angle steel material for 35kV circuit cross-arm, and length is 0.8m.
The model JKLYJ-10/185 insulated conductor of the 10kV line conductor 4 being used, span takes 50m, and wire is conductive
Part outer radius 8.9mm, D.C. resistance takes 0.16 Ω/km, and sag takes 1m.
The second line insulator 5 being used is 10kV line insulator, using model PS-15 pin insulator, its
50% critical flashover voltage under standard lightning wave takes 105kV.
The the second circuit cross-arm 6 being used is 10kV circuit cross-arm, and using angle steel material, its length is 1.82m.
The model Φ 190-18m concrete shaft tower of the base shaft tower 7 being used, buried depth is 2.3m, and its wave impedance takes
For 250 Ω.
Calculate used the earth soil resistivity and take 100 Ω m.
The length of the lightning-arrest line bracket 9 being used is 1.6m.
The lightning conducter 10 being used is GJ-50 steel strand wires, and span takes 80m, wire outer radius 4.8mm, and D.C. resistance takes
2.04 Ω/km, sag takes 1m.
It is 5kA that the first line arrester 9 that used and the second leakage conductor 14 adopt nominal discharge current, energy is inhaled
Receipts ability is the 10kV zinc oxide leakage conductor of 50kJ, installs first line arrester 9 every 4 base shaft towers and keeps away with the second circuit
Thunder device 14.
Down conductor 12 radius being used is 4mm.
The grounding body 13 being used, radius is 16mm, and length is 2m, and all installs in every base shaft tower, under grounding lead
Line connects.
Calculate using 35kV/10kV before or after the present invention close bar distribution line tripping rate with lightning strike it is considered to correlated condition
Parameter is as follows：
(1) the total tripping rate with lightning strike of 35kV circuit is：The counterattack trip-out rate that thunder and lightning direct attack tower top causes, thunder and lightning are attacked wire directly and are made
Become attacks trip-out rate and thunderbolt circuit sensing trip-out rate three's sum that nearby ground is caused directly.
(2) the total tripping rate with lightning strike of 10kV circuit is：The counterattack trip-out rate that thunder and lightning direct attack tower top causes, thunder and lightning are attacked wire directly and are made
Become attacks trip-out rate and thunderbolt circuit sensing trip-out rate three's sum that nearby ground is caused directly.
(3) tripping rate with lightning strike that 35kV/10kV closes bar distribution line is the total tripping rate with lightning strike of 35kV circuit and 10kV circuit
Total tripping rate with lightning strike sum.
(4) amplitude of lightning current distributed median electric current takes 36.7kA, and due to being relatively, CG lightning density takes 1 time/km2/
Year.
(5) because domestic 35kV and 10kV medium voltage distribution network major part adopt the system operation side of neutral non-effective grounding
Formula, system single-phase-to-ground current is not enough to cause power frequency to build arc to lead to lightning stroke trip, therefore 35kV and the counterattack of 10kV circuit, straight
Hit, power frequency is built arc and is defined after induced lightening tripping operation causes two-phase Above Transmission Lines flashover to be struck by lightning.
(6) close the tripping rate with lightning strike of bar distribution line except calculating 35kV/10kV before or after the present invention is implemented, also calculate and adopt
Use following lightning protection measures：
1. every 4 base shaft towers, three-phase line arrester, every base shaft tower down conductor and grounding body are installed.
2. lightning-arrest line bracket, ground wire grounding draw with the installation of every base shaft tower to install three-phase line arrester every 4 base shaft towers
Offline and grounding body.
3. every 4 base shaft towers, two-phase leakage conductor, down conductor and grounding body are installed.
Calculate the knot of the tripping rate with lightning strike (secondary/100km/) closing bar distribution line using 35kV/10kV before and after the present invention
Really as shown in the table.
Table 1 35kV/10kV closes the tripping rate with lightning strike comparison sheet of bar distribution line
From result of calculation, the present invention can be greatly reduced 35kV/10kV and close bar distribution line lightning stroke trip after implementing
Rate (declines 83%).1. with lightning protection measures 3. effect is significant is better than lightning protection measures.
Although 2. the effect that the present invention reduces 35kV/10kV conjunction bar distribution line tripping rate with lightning strike is not so good as lightning protection measures,
Being that the present invention is 2. fewer than lightning protection measures installs a phase line arrester, and the present invention reduces while ensureing Lightning Transformation effect
Improvement cost and maintenance work amoun.
Although present disclosure has been made to be discussed in detail by above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read the above, for the present invention's
Multiple modifications and substitutions all will be apparent from.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (8)
1. a kind of 35kV/10kV closes bar distribution line lightning protection device, comprises：Base shaft tower（7）, described base shaft tower（7）Lower end is arranged
On ground（8）Interior, and and ground（8）Vertically；It is disposed on the first line cross-arm of base shaft tower upper end（3）Horizontal with the second circuit
Load（6）, it is provided with first line wire（2）First line insulator（1）, described first line insulator（1）It is arranged on
One circuit cross-arm（3）On；It is provided with the second line conductor（4）The second line insulator（5）, described second line insulator
（5）It is arranged on the second circuit cross-arm（6）On；It is characterized in that, also comprise：It is provided with lightning conducter（10）Lightning-arrest line bracket（11）,
Described lightning-arrest line bracket（11）It is arranged on base shaft tower（7）Top；First line arrester（9）With the second leakage conductor（14）,
Described first line arrester（9）With the second line conductor（4）In middle triple line, any one phase line connects, described second circuit
Arrester（14）With the second line conductor（4）In remaining two phase line in middle triple line, any one phase line connects；Under grounding lead
Line（12）, described down conductor（12）One end and lightning-arrest line bracket（11）And the second circuit cross-arm（6）On first line
Arrester（9）With the second leakage conductor（14）Connect；Described down conductor（12）The other end and grounding body（13）Connect；Institute
State grounding body（13）Positioned at described ground（8）Internal；Thunder-strike current passes through described lightning-arrest line bracket（11）, first line arrester
（9）With the second leakage conductor（14）By down conductor（12）And grounding body（13）Introduce the earth.
2. a kind of 35kV/10kV closes bar distribution line lightning protection device it is characterised in that described first as claimed in claim 1
Line conductor（2）For three-phase 35kV line loop, described second line conductor（4）For three-phase 10kV circuit.
3. a kind of 35kV/10kV closes bar distribution line lightning protection device it is characterised in that described take shelter from the thunder as claimed in claim 1
Line bracket（11）With base shaft tower（7）Center line be parallel to each other.
4. a kind of 35kV/10kV closes bar distribution line lightning protection device it is characterised in that described ground as claimed in claim 1
（8）For being in the level ground of ground potential.
5. a kind of 35kV/10kV closes bar distribution line lightning protection device it is characterised in that described first as claimed in claim 1
Leakage conductor（9）With the second leakage conductor（14）For metal oxide leakage conductor or overvoltage protection device.
6. a kind of 35kV/10kV closes bar distribution line lightning protection device it is characterised in that described as claimed in claim 1
35kV/10kV closes in bar distribution line, every 2 or 4 base shaft towers（7）First line arrester is installed（9）Take shelter from the thunder with the second circuit
Device（14）.
7. a kind of 35kV/10kV closes bar distribution line lightning protection device it is characterised in that described take shelter from the thunder as claimed in claim 1
Line bracket（11）Using material be angle steel and be arranged on described 35kV/10kV and close the every foundation shaft tower in bar distribution line
（7）On.
8. a kind of 35kV/10kV closes bar distribution line lightning protection device it is characterised in that described ground connection as claimed in claim 1
Downlead（12）And grounding body（13）Using galvanized steel bar material, and described down conductor（12）And grounding body（13）If
Put in every foundation shaft tower（7）On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611012637.8A CN106451308A (en) | 2016-11-17 | 2016-11-17 | 35kv/10kv common-tower distribution line lightning protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611012637.8A CN106451308A (en) | 2016-11-17 | 2016-11-17 | 35kv/10kv common-tower distribution line lightning protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106451308A true CN106451308A (en) | 2017-02-22 |
Family
ID=58220646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611012637.8A Pending CN106451308A (en) | 2016-11-17 | 2016-11-17 | 35kv/10kv common-tower distribution line lightning protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106451308A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108736431A (en) * | 2018-07-12 | 2018-11-02 | 广东电网有限责任公司 | The lightning-arrest line bracket of straight line single pole and electric pole |
| CN109826482A (en) * | 2019-03-12 | 2019-05-31 | 常熟风范电力设备股份有限公司 | A kind of anti-lightning strike shaft tower of composite construction |
| CN112054460A (en) * | 2020-08-07 | 2020-12-08 | 深圳供电局有限公司 | Tower system |
| CN112086929A (en) * | 2020-09-17 | 2020-12-15 | 国网河南省电力公司平顶山供电公司 | Method for reducing damage force of lightning stroke low-voltage line, lightning arrester and low-voltage line lightning protection system |
| CN112653063A (en) * | 2020-12-17 | 2021-04-13 | 长沙理工大学 | 10kV overhead line lightning protection method used by matching of coupling ground wire and lightning arrester |
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| CN202068162U (en) * | 2010-12-30 | 2011-12-07 | 刘继 | High-voltage distribution line lightning prevention system |
| CN104009440A (en) * | 2014-04-22 | 2014-08-27 | 国网上海市电力公司 | Installation method of line arresters for lighting protection of 10 kV common-tower double-circuit line |
| CN204081618U (en) * | 2014-09-26 | 2015-01-07 | 国网上海市电力公司 | A kind of cement electric power line pole tower |
| JP2015109142A (en) * | 2013-12-03 | 2015-06-11 | 株式会社東芝 | Polymer-type lightening arrester and method for producing the same |
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2016
- 2016-11-17 CN CN201611012637.8A patent/CN106451308A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202068162U (en) * | 2010-12-30 | 2011-12-07 | 刘继 | High-voltage distribution line lightning prevention system |
| JP2015109142A (en) * | 2013-12-03 | 2015-06-11 | 株式会社東芝 | Polymer-type lightening arrester and method for producing the same |
| CN104009440A (en) * | 2014-04-22 | 2014-08-27 | 国网上海市电力公司 | Installation method of line arresters for lighting protection of 10 kV common-tower double-circuit line |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108736431A (en) * | 2018-07-12 | 2018-11-02 | 广东电网有限责任公司 | The lightning-arrest line bracket of straight line single pole and electric pole |
| CN109826482A (en) * | 2019-03-12 | 2019-05-31 | 常熟风范电力设备股份有限公司 | A kind of anti-lightning strike shaft tower of composite construction |
| CN112054460A (en) * | 2020-08-07 | 2020-12-08 | 深圳供电局有限公司 | Tower system |
| CN112086929A (en) * | 2020-09-17 | 2020-12-15 | 国网河南省电力公司平顶山供电公司 | Method for reducing damage force of lightning stroke low-voltage line, lightning arrester and low-voltage line lightning protection system |
| CN112653063A (en) * | 2020-12-17 | 2021-04-13 | 长沙理工大学 | 10kV overhead line lightning protection method used by matching of coupling ground wire and lightning arrester |
| CN112653063B (en) * | 2020-12-17 | 2022-07-29 | 长沙理工大学 | Lightning protection method for 10kV overhead line used by matching coupling ground wire and lightning arrester |
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Application publication date: 20170222 |
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