CN104682311A - Lightning protection overhead line - Google Patents

Lightning protection overhead line Download PDF

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Publication number
CN104682311A
CN104682311A CN201310632822.7A CN201310632822A CN104682311A CN 104682311 A CN104682311 A CN 104682311A CN 201310632822 A CN201310632822 A CN 201310632822A CN 104682311 A CN104682311 A CN 104682311A
Authority
CN
China
Prior art keywords
arrester
arm
transmission line
cross
lightning strike
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.)
Pending
Application number
CN201310632822.7A
Other languages
Chinese (zh)
Inventor
陈光华
饶强
李方云
朱民
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
State Grid Beijing Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
State Grid Beijing Electric Power Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by State Grid Corp of China SGCC, State Grid Beijing Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201310632822.7A priority Critical patent/CN104682311A/en
Publication of CN104682311A publication Critical patent/CN104682311A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G13/00Installations of lightning conductors; Fastening thereof to supporting structure
    • H02G13/40Connection to earth
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G7/00Overhead installations of electric lines or cables
    • H02G7/20Spatial arrangements or dispositions of lines or cables on poles, posts, or towers

Abstract

The invention provides a lightning protection overhead line which comprises a strain power pole, an overhead line, a cross arm, an insulator and an arrester with series gaps, wherein the overhead line is erected on the strain power pole; the cross arm is fixedly arranged on the strain power pole; one end of the insulator is connected with the overhead line; the other end of the insulator is connected with the cross arm; the arrester with series gaps comprises a high voltage terminal and a ground terminal; the high voltage terminal is connected with the overhead line; the ground terminal is connected with the cross arm. According to the lightning protection overhead line provided by the invention, the high voltage terminal of the arrester with series gaps is connected with the overhead line, and the ground terminal is connected with the cross arm, so when the overhead line is hit by thunder strike to generate over voltage, a discharge gap of the arrester with series gaps is broken down, over current flows into the ground through the cross arm connected with the arrester with series gaps, and further line breakage accidents by lightning are avoided.

Description

Anti-lightning strike overhead transmission line
Technical field
The present invention relates to overhead transmission line field, more specifically, relate to a kind of anti-lightning strike overhead transmission line.
Background technology
At present, be erected on the overhead wire on straight line pole and possessed more complete anti-lightning strike measure, and be erected on the overhead wire on tension-resistant rod and do not take any anti-lightning strike measure.Like this, overhead transmission line, in actual moving process, the overhead wire on tension-resistant rod often can be broken owing to being struck by lightning, thus cause many faults.
Summary of the invention
The present invention aims to provide a kind of anti-lightning strike overhead transmission line, the disconnection problem produced because being struck by lightning with the overhead wire solved on tension-resistant rod of the prior art.
For solving the problems of the technologies described above, according to an aspect of the present invention, provide a kind of anti-lightning strike overhead transmission line, comprising: tension-resistant rod; Overhead wire, overhead wire is erected on tension-resistant rod; Cross-arm, cross-arm is fixedly mounted on tension-resistant rod; Insulator, one end of insulator is connected with overhead wire, and the other end is connected with cross-arm; Arrester with series gaps, arrester with series gaps comprises: high-pressure side and earth terminal, and high-pressure side is connected with overhead wire, and earth terminal is connected with cross-arm.
Further, arrester with series gaps is metal oxide arrester.
Further, arrester with series gaps is surge arrester with external series gaps.
Further, overhead wire is positioned at the below of cross-arm.
Further, anti-lightning strike overhead transmission line also comprises: strain clamp, and one end of strain clamp is connected with overhead wire, and the other end is connected with insulator.
Further, insulator is suspension insulator.
Further, anti-lightning strike overhead transmission line also comprises: run-on tab, and one end of run-on tab is connected with cross-arm, and the other end is connected with the earth terminal of arrester with series gaps.
Further, one end that run-on tab is connected with cross-arm is connected with insulator.
Further, anti-lightning strike overhead transmission line comprises three overhead wires be arranged in parallel, and the overhead wire be positioned on two side positions is positioned at the below of cross-arm, and the overhead wire be positioned on centre position is positioned at the top of cross-arm.
The present invention is connected the high-pressure side of arrester with series gaps with overhead wire, earth terminal is connected with cross-arm, like this, when overhead wire is produced overvoltage owing to being struck by lightning, the discharging gap of arrester with series gaps is breakdown, overcurrent flows into the earth by the cross-arm be connected with arrester with series gaps, thus avoids the generation of lightning-caused breaking accident.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 diagrammatically illustrates the structural representation of the anti-lightning strike overhead transmission line of an execution mode in the present invention; And
Fig. 2 diagrammatically illustrates the structural representation of the anti-lightning strike overhead transmission line of another execution mode in the present invention;
Reference numeral in figure: 10, overhead wire; 20, cross-arm; 30, insulator; 40, arrester with series gaps; 41, high-pressure side; 42, earth terminal; 50, strain clamp; 60, run-on tab; 70, tension-resistant rod.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
The invention provides a kind of anti-lightning strike overhead transmission line, comprising: tension-resistant rod 70; Overhead wire 10, overhead wire 10 is erected on tension-resistant rod 70; Cross-arm 20, cross-arm 20 is fixedly mounted on tension-resistant rod 70; Insulator 30, one end of insulator 30 is connected with overhead wire 10, and the other end is connected with cross-arm 20; Arrester with series gaps 40, arrester with series gaps 40 comprises: high-pressure side 41 and earth terminal 42, and high-pressure side 41 is connected with overhead wire 10, and earth terminal 42 is connected with cross-arm 20.Preferably, overhead wire 10 is in three tactic phase lines.The position of phase line is different, can adopt the installation method of different erection methods and arrester with series gaps 40.
Composition graphs 1 and Fig. 2 can find out, overhead wire 10 is erected on tension-resistant rod 70 by cross-arm 20 and insulator 30, and arrester with series gaps 40 is installed between cross-arm 20 and overhead wire 10, the high-pressure side 41 of arrester with series gaps 40 is connected with overhead wire 10, and earth terminal 42 is connected with cross-arm 20.
The present invention is connected the high-pressure side 41 of arrester with series gaps 40 with overhead wire 10, earth terminal 42 is connected with cross-arm 20, when overhead wire 10 is produced overvoltage owing to being struck by lightning, the discharging gap of arrester with series gaps 40 is breakdown, overcurrent flows into the earth by the cross-arm 20 be connected with arrester with series gaps 40, thus avoids the generation of lightning-caused breaking accident.
Preferably, arrester with series gaps 40 is metal oxide arrester.Preferably, arrester with series gaps 40 is zinc oxide arrester.
Preferably, arrester with series gaps 40 is surge arrester with external series gaps.Surge arrester with external series gaps can realize reasonable anti-lightning strike effect.
Preferably, in one embodiment, overhead wire 10 is positioned at the below of cross-arm 20, and such as, overhead wire 10 is for being arranged in of phase line on two side positions.Now, what arrester with series gaps 40 adopted is hanging installation method, and namely high-pressure side 41 is positioned at below, and earth terminal 42 is positioned at top.Preferably, the phase line be positioned on two side positions is separated by tension-resistant rod 70.The phase line be positioned on position, both sides in three phase lines is arranged on the below of cross-arm 20, and by cross-arm 20, two phase lines are separately positioned on the side of tension-resistant rod 70, can make to maintain a certain distance between two phase lines, be conducive to the installation of the parts such as insulator 30 and arrester with series gaps 40.
Preferably, anti-lightning strike overhead transmission line also comprises: strain clamp 50, and one end of strain clamp 50 is connected with overhead wire 10, and the other end is connected with insulator 30.As shown in Figure 1, when overhead wire 10 is positioned at the below of cross-arm 20, by strain clamp 50 and insulator 30 with the use of, a part for overhead wire 10 is suspended on cross-arm 20 and forms curved line, can easily arrester with series gaps 40 be arranged between this curved line and cross-arm 20.
Preferably, insulator 30 is suspension insulator.When overhead wire 10 be suspended on cross-arm 20 time, utilize suspension insulator to replace common insulator 30 can play better fixation to overhead wire 10, and suspension insulator can coordinate the use of strain clamp 50 better.
In another embodiment, overhead wire 10 is positioned at the top of cross-arm 20, and such as, overhead wire 10 is for being positioned at the phase line in centre position.Now, what arrester with series gaps 40 adopted is vertical installation method, and namely high-pressure side 41 is positioned at top, and earth terminal 42 is positioned at below.Preferably, anti-lightning strike overhead transmission line also comprises: run-on tab 60, and one end of run-on tab 60 is connected with cross-arm 20, and the other end is connected with the earth terminal 42 of arrester with series gaps 40.The earth terminal 42 of arrester with series gaps 40 is connected with cross-arm 20 by run-on tab 60, just the position of arrester with series gaps 40 can be limited according to actual needs, make arrester with series gaps 40 keep certain safe distance with the miscellaneous part in circuit, prevent from producing between each parts interfering.
Preferably, one end that run-on tab 60 is connected with cross-arm 20 is connected with insulator 30.One end of run-on tab 60 is connected with insulator 30, and the other end is connected with arrester with series gaps 40, can make to keep certain safe distance between insulator 30 and arrester with series gaps 40.
Preferably, anti-lightning strike overhead transmission line comprises three overhead wires be arranged in parallel 10, and the overhead wire 10 be positioned on two side positions is positioned at the below of cross-arm 20, and the overhead wire 10 be positioned on centre position is positioned at the top of cross-arm 20.
The phase line being positioned at two side positions is arranged on the below of cross-arm 20, the phase line being positioned at centre position is arranged on the top of cross-arm 20, can make all to maintain a certain distance between adjacent two phase lines, be convenient to the installation of insulator 30 and parts such as arrester with series gaps 40 grade, can also make to be connected between each parts on not isopen and keep certain safe distance.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (9)

1. an anti-lightning strike overhead transmission line, is characterized in that, comprising:
Tension-resistant rod (70);
Overhead wire (10), described overhead wire (10) is erected on described tension-resistant rod (70);
Cross-arm (20), described cross-arm (20) is fixedly mounted on described tension-resistant rod (70);
Insulator (30), one end of described insulator (30) is connected with described overhead wire (10), and the other end is connected with described cross-arm (20);
Arrester with series gaps (40), described arrester with series gaps (40) comprising: high-pressure side (41) and earth terminal (42), and described high-pressure side (41) is connected with described overhead wire (10), and described earth terminal (42) is connected with described cross-arm (20).
2. anti-lightning strike overhead transmission line according to claim 1, is characterized in that, described arrester with series gaps (40) is metal oxide arrester.
3. anti-lightning strike overhead transmission line according to claim 1, is characterized in that, described arrester with series gaps (40) is surge arrester with external series gaps.
4. anti-lightning strike overhead transmission line according to claim 1, is characterized in that, described overhead wire (10) is positioned at the below of described cross-arm (20).
5. anti-lightning strike overhead transmission line according to claim 4, is characterized in that, described anti-lightning strike overhead transmission line also comprises:
Strain clamp (50), one end of described strain clamp (50) is connected with described overhead wire (10), and the other end is connected with described insulator (30).
6. anti-lightning strike overhead transmission line according to claim 5, is characterized in that, described insulator (30) is suspension insulator.
7. anti-lightning strike overhead transmission line according to claim 1, is characterized in that, described anti-lightning strike overhead transmission line also comprises:
Run-on tab (60), one end of described run-on tab (60) is connected with described cross-arm (20), and the other end is connected with the described earth terminal (42) of described arrester with series gaps (40).
8. anti-lightning strike overhead transmission line according to claim 7, is characterized in that, one end that described run-on tab (60) is connected with described cross-arm (20) is connected with described insulator (30).
9. anti-lightning strike overhead transmission line according to claim 1, described anti-lightning strike overhead transmission line comprises three described overhead wires (10) be arranged in parallel, the described overhead wire (10) be positioned on two side positions is positioned at the below of described cross-arm (20), and the described overhead wire (10) be positioned on centre position is positioned at the top of described cross-arm (20).
CN201310632822.7A 2013-11-29 2013-11-29 Lightning protection overhead line Pending CN104682311A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310632822.7A CN104682311A (en) 2013-11-29 2013-11-29 Lightning protection overhead line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310632822.7A CN104682311A (en) 2013-11-29 2013-11-29 Lightning protection overhead line

Publications (1)

Publication Number Publication Date
CN104682311A true CN104682311A (en) 2015-06-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310632822.7A Pending CN104682311A (en) 2013-11-29 2013-11-29 Lightning protection overhead line

Country Status (1)

Country Link
CN (1) CN104682311A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104882876A (en) * 2015-06-19 2015-09-02 中国电力科学研究院 Extra-high voltage DC grounding electrode circuit protection system
CN111917094A (en) * 2020-07-14 2020-11-10 国网福建省电力有限公司宁德供电公司 Multifunctional line overvoltage protection device and lightning protection method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104882876A (en) * 2015-06-19 2015-09-02 中国电力科学研究院 Extra-high voltage DC grounding electrode circuit protection system
CN104882876B (en) * 2015-06-19 2018-12-11 中国电力科学研究院 A kind of extra-high voltage direct current ground electrode circuit guard system
CN111917094A (en) * 2020-07-14 2020-11-10 国网福建省电力有限公司宁德供电公司 Multifunctional line overvoltage protection device and lightning protection method thereof

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Application publication date: 20150603

RJ01 Rejection of invention patent application after publication