CN203423464U - Lightning protection device for double-circuit power distribution line - Google Patents

Lightning protection device for double-circuit power distribution line Download PDF

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Publication number
CN203423464U
CN203423464U CN201320484296.XU CN201320484296U CN203423464U CN 203423464 U CN203423464 U CN 203423464U CN 201320484296 U CN201320484296 U CN 201320484296U CN 203423464 U CN203423464 U CN 203423464U
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China
Prior art keywords
distribution line
protection device
lightning protection
ground wire
double
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Active
Application number
CN201320484296.XU
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Chinese (zh)
Inventor
程文锋
柯春俊
喇元
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.)
Electric Power Research Institute of Guangdong Power Grid Co Ltd
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Electric Power Research Institute of Guangdong Power Grid Co Ltd
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Priority to CN201320484296.XU priority Critical patent/CN203423464U/en
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Abstract

The utility model provides a lightning protection device for a double-circuit power distribution line. The lightning protection device comprises an overhead ground line (2) and a coupling ground line (3). The overhead ground line (2) is fixed on a power transmission tower above an upper cross arm (7) on the double-circuit power distribution line by an upper hold hoop (1). The coupling ground line (3) is fixed on a power transmission tower below a lower cross arm (8) on the double-circuit power distribution line by a lower hold hoop (6). Both the overhead ground line and the coupling ground line are provided with wire clamps (4) which are connected with a ground wire (5) and grounded. The lightning protection device provided by the utility model can effectively reduce the inductive current component on the double-circuit power distribution line in the case of lightening, and has the advantages of high protection capacity for the line, convenient installation, stability, reliability and long service life.

Description

A kind of lightning protection device for double back distribution line
Technical field
The utility model relates to a kind of lightning protection device for double back distribution line.
Background technology
The most easily there is damage to crops caused by thunder accident in China's main power distribution network 6~35kV electrical network, the distribution line overwhelming majority is without earth-wire protection, and self insulation level is lower, is the main cause that easily suffers Lightning disservice.Wherein divide again direct lightning strike harm and two kinds of situations of induction thunder harm, a kind of is the direct lightning strike overvoltage of being struck by lightning and causing in circuit; Another kind is near thunderbolt circuit, due to the caused lightning induced voltage of electromagnetic induction.Because low-voltage circuit insulation level is low, the thunderbolt number of times being caused by lightning induced voltage accounts for the overwhelming majority.
In distribution line, seldom adopt lightning protection measures protection at present, so lightning hazards is comparatively serious.Install overhead ground wire and coupling ground wire additional and can effectively reduce the induced current component on double back distribution line while being struck by lightning, circuit is had to stronger protective capability, reduce the situation that circuit trips because of induction lightening pressure.
Utility model content
Technical problem to be solved in the utility model, is just to provide a kind of lightning protection device for double back distribution line, and realization effectively reduces the induced current component on double back distribution line while being struck by lightning, reaches the object that enhancing line thunder protection guarantor effect is protected.
Solve the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of lightning protection device for double back distribution line, it is characterized in that: comprise overhead ground wire 2 and coupling ground wire 3, described overhead ground wire 2 is fixed on the transmission tower of cross-arm 7 tops on double back distribution line by upper anchor ear 1, described coupling ground wire 3 is fixed on the transmission tower of cross-arm 8 belows under double back distribution line by lower anchor ear 6, overhead ground wire and coupling ground wire are equipped with wire clamp 4, ground connection after being connected with earth lead 5 by wire clamp 4.
The vertical range of described upper anchor ear and upper cross-arm is 50~80mm; The vertical range of described lower anchor ear and lower cross-arm is 60~100mm.
Described overhead ground wire is GJ-35 galvanized strand wires; Described coupling ground wire is GJ-35 galvanized strand wires.
Described upper anchor ear model is D160; Described lower anchor ear model is D220.
Described wire clamp model is suspension clamp; Described earth lead is copper plated steel twisted wire.
Accompanying drawing explanation
Accompanying drawing is that the application example of the utility model on double back distribution line electric pole executed schematic diagram.
In figure: 1, upper anchor ear, 2, overhead ground wire, 3, coupling ground wire, 4, wire clamp, 5, earth lead, 6, lower anchor ear, 7, upper cross-arm, 8, lower cross-arm.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated.
As shown in drawings, lightning protection device embodiment for double back distribution line of the present utility model, comprise overhead ground wire 2 and coupling ground wire 3, overhead ground wire 2 is fixed on the transmission tower of cross-arm 7 tops on double back distribution line by upper anchor ear 1, coupling ground wire 3 is fixed on the transmission tower of cross-arm 8 belows under double back distribution line by lower anchor ear 6, overhead ground wire 2 and coupling ground wire 3 are equipped with wire clamp 4, by wire clamp, are connected ground connection with earth lead 5.
Described overhead ground wire 2 is GJ-35 galvanized strand wires; Described coupling ground wire 3 is GJ-35 galvanized strand wires.
Described upper anchor ear 1 model is D160; Described lower anchor ear 6 models are D220.
Described wire clamp 4 models are suspension clamp; Described earth lead 5 is copper plated steel twisted wire.
Described upper anchor ear 1 is 80~100mm with the vertical range of upper cross-arm 7; Described lower anchor ear 6 is 60~80mm with the vertical range of lower cross-arm 8.

Claims (5)

1. the lightning protection device for double back distribution line, it is characterized in that: comprise overhead ground wire (2) and coupling ground wire (3), described overhead ground wire (2) is fixed on the transmission tower of cross-arm on double back distribution line (7) top by upper anchor ear (1), described coupling ground wire (3) is fixed on the transmission tower of cross-arm under double back distribution line (8) below by lower anchor ear (6), overhead ground wire and coupling ground wire are equipped with wire clamp (4), ground connection after being connected with earth lead (5) by wire clamp (4).
2. the lightning protection device for double back distribution line according to claim 1, is characterized in that: described overhead ground wire (2) is GJ-35 galvanized strand wires; Described coupling ground wire (3) is GJ-35 galvanized strand wires.
3. the lightning protection device for double back distribution line according to claim 1, is characterized in that: described upper anchor ear (1) model is D160; Described lower anchor ear (6) model is D220.
4. the lightning protection device for double back distribution line according to claim 1, is characterized in that: described wire clamp (4) model is suspension clamp; Described earth lead (5) is copper plated steel twisted wire.
5. the lightning protection device for double back distribution line according to claim 1, is characterized in that: described upper anchor ear (1) is 80~100mm with the vertical range of upper cross-arm (7); Described lower anchor ear (6) is 60~80mm with the vertical range of lower cross-arm (8).
CN201320484296.XU 2013-08-08 2013-08-08 Lightning protection device for double-circuit power distribution line Active CN203423464U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320484296.XU CN203423464U (en) 2013-08-08 2013-08-08 Lightning protection device for double-circuit power distribution line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320484296.XU CN203423464U (en) 2013-08-08 2013-08-08 Lightning protection device for double-circuit power distribution line

Publications (1)

Publication Number Publication Date
CN203423464U true CN203423464U (en) 2014-02-05

Family

ID=50022553

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320484296.XU Active CN203423464U (en) 2013-08-08 2013-08-08 Lightning protection device for double-circuit power distribution line

Country Status (1)

Country Link
CN (1) CN203423464U (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109347042A (en) * 2018-09-30 2019-02-15 国网浙江平阳县供电有限责任公司 The mounting structure and installation method of ground wire are protected on a kind of straight line pole
CN109473936A (en) * 2018-09-30 2019-03-15 国网浙江平阳县供电有限责任公司 The mounting structure and installation method of ground wire are protected on a kind of terminal pole
CN109510152A (en) * 2018-09-30 2019-03-22 国网浙江平阳县供电有限责任公司 A kind of mounting structure and installation method for protecting ground wire on angle pole
CN109577730A (en) * 2018-09-30 2019-04-05 国网浙江平阳县供电有限责任公司 A kind of ground structure for protecting ground wire
CN110221180A (en) * 2019-07-01 2019-09-10 国网四川省电力公司电力科学研究院 A kind of identification of 10kV distribution line lightning fault and localization method
CN110863687A (en) * 2019-11-28 2020-03-06 国网江苏省电力有限公司南京供电分公司 Be applied to electric power tower and install communication antenna's multi-functional fastener of presenting additional

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109347042A (en) * 2018-09-30 2019-02-15 国网浙江平阳县供电有限责任公司 The mounting structure and installation method of ground wire are protected on a kind of straight line pole
CN109473936A (en) * 2018-09-30 2019-03-15 国网浙江平阳县供电有限责任公司 The mounting structure and installation method of ground wire are protected on a kind of terminal pole
CN109510152A (en) * 2018-09-30 2019-03-22 国网浙江平阳县供电有限责任公司 A kind of mounting structure and installation method for protecting ground wire on angle pole
CN109577730A (en) * 2018-09-30 2019-04-05 国网浙江平阳县供电有限责任公司 A kind of ground structure for protecting ground wire
CN110221180A (en) * 2019-07-01 2019-09-10 国网四川省电力公司电力科学研究院 A kind of identification of 10kV distribution line lightning fault and localization method
CN110221180B (en) * 2019-07-01 2021-07-06 国网四川省电力公司电力科学研究院 10kV distribution line lightning stroke fault recognition and positioning method
CN110863687A (en) * 2019-11-28 2020-03-06 国网江苏省电力有限公司南京供电分公司 Be applied to electric power tower and install communication antenna's multi-functional fastener of presenting additional

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