CN103295693A - Lightening-breakage-preventing medium-voltage insulating wire - Google Patents

Lightening-breakage-preventing medium-voltage insulating wire Download PDF

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Publication number
CN103295693A
CN103295693A CN2013102050960A CN201310205096A CN103295693A CN 103295693 A CN103295693 A CN 103295693A CN 2013102050960 A CN2013102050960 A CN 2013102050960A CN 201310205096 A CN201310205096 A CN 201310205096A CN 103295693 A CN103295693 A CN 103295693A
Authority
CN
China
Prior art keywords
aluminum
steel
lightening
breakage
voltage insulating
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
CN2013102050960A
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Chinese (zh)
Inventor
孙德斌
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 Jiangsu Electric Power Co Ltd
Nantong Power Supply Co of Jiangsu Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
State Grid Jiangsu Electric Power Co Ltd
Nantong Power Supply Co of Jiangsu 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 Jiangsu Electric Power Co Ltd, Nantong Power Supply Co of Jiangsu Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN2013102050960A priority Critical patent/CN103295693A/en
Publication of CN103295693A publication Critical patent/CN103295693A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a lightening-breakage-preventing medium-voltage insulating wire which comprises a steel core formed by stranded steel wires. An aluminum wire layer is wrapped outside the steel core. Aluminum chloride or ammonium chloride is coated on the surface of the aluminum wire layer. An insulating layer is wrapped outside the aluminum wire layer. The lightening-breakage-preventing medium-voltage insulating wire is reasonable in structure and good in working performance. Due to the fact that the aluminum chloride or ammonium chloride, which is easy to sublimate under heat, is coated on the surface of the aluminum wire layer used for conducting, during disruptive discharge of the medium-voltage insulating wire, sublimation, under high temperature, from solid to gas brings away a huge amount of heat, and temperature of discharge points is lowered.

Description

Press insulated conductor in the anti-lightning strike broken string
Technical field
The present invention relates to press insulated conductor in a kind of anti-lightning strike broken string.
Background technology
The extensive use in electric power system of middle pressure insulated conductor mainly is that his advantage determines, he can the particularly urban look greening and power circuit passage and this a great problem of power circuit safe operation of fine solution tree line contradiction.But he also has to the life weakness, when power circuit is subjected to atmospheric over-voltage (thunderbolt) discharge, he is broken string just, have a strong impact on behind the broken string outside the stable operation of electric power system, bigger problem is the security of the lives and property of the masses around the influence, and this has limited his application prospect again.His broken string mechanism is as follows: be subjected to atmospheric over-voltage at middle pressure insulated conductor circuit, can not meet the demands at first in the weak spot discharge of insulating as insulation, the puncture of one point appears in insulating barrier during discharge, because breakdown point is very little, electric arc can not move, cause this temperature very high, the high temperature of moment makes the fusing of this metallic aluminium and breaks.The mode that adopts is at present: install zinc oxide arrester, discharge interval, lightning conducter or coupling ground wire on the middle pressure insulated conductor circuit additional and prevent that the middle insulated conductor of pressing is in the measure of atmospheric over-voltage broken string, these all are passive types, effect is not ideal, and the accident of broken string still often takes place.
Summary of the invention
The object of the present invention is to provide a kind of rational in infrastructurely, press insulated conductor in the anti-lightning strike broken string of favorable working performance.
Technical solution of the present invention is:
Press insulated conductor in a kind of anti-lightning strike broken string, it is characterized in that: comprise the steel core that steel wire strand is combined into, steel core coats the aluminum steel layer outward, and the aluminum steel laminar surface applies aluminium chloride or ammonium chloride, aluminum steel outsourcing insulating layer coating.
The cross-sectional area of steel core is 16 ~ 25 square millimeters; The cross-sectional area of aluminum conductor is 50 ~ 300 square millimeters.
The present invention is rational in infrastructure, favorable working performance; The middle pressure is coated with (heat) easily sublimator material on the insulated conductor conductor wire face.In when pressing insulated conductor disruptive discharge owing to be coated with easily (heat) sublimator material on the conductor wire face, under high-temperature condition, distillation is taken away a large amount of heats when directly becoming gas by solid, reduces the temperature of point of discharge.Add 16 to 25 square millimeters of multiply steel cores in the middle of the middle pressure insulated conductor.The fusing point of steel is 1300 to 1400 degrees centigrade, and aluminium has only 660.2 degrees centigrade, and has only steel half, when appearring in point of discharge, high temperature both made aluminum steel fusing like this, steel core is not fused, and insulated conductor is not broken, and is actually to have improved the middle insulated conductor intensity of pressing under the high temperature.
The invention will be further described below in conjunction with embodiment.
Embodiment
Press insulated conductor in a kind of anti-lightning strike broken string, comprise the steel core that steel wire strand is combined into, steel core coats the aluminum steel layer outward, and the aluminum steel laminar surface applies aluminium chloride or ammonium chloride, aluminum steel outsourcing insulating layer coating.
The cross-sectional area of steel core is 16 ~ 25 square millimeters; The cross-sectional area of aluminum conductor is 50 ~ 300 square millimeters; The collocation of size so very is of value to the raising of service behaviour.

Claims (2)

1. press insulated conductor in an anti-lightning strike broken string, it is characterized in that: comprise the steel core that steel wire strand is combined into, steel core coats the aluminum steel layer outward, and the aluminum steel laminar surface applies aluminium chloride or ammonium chloride, aluminum steel outsourcing insulating layer coating.
2. press insulated conductor in the anti-lightning strike broken string according to claim 1, it is characterized in that: the cross-sectional area of steel core is 16 ~ 25 square millimeters; The cross-sectional area of aluminum conductor is 50 ~ 300 square millimeters.
CN2013102050960A 2013-05-29 2013-05-29 Lightening-breakage-preventing medium-voltage insulating wire Pending CN103295693A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2013102050960A CN103295693A (en) 2013-05-29 2013-05-29 Lightening-breakage-preventing medium-voltage insulating wire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2013102050960A CN103295693A (en) 2013-05-29 2013-05-29 Lightening-breakage-preventing medium-voltage insulating wire

Publications (1)

Publication Number Publication Date
CN103295693A true CN103295693A (en) 2013-09-11

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2013102050960A Pending CN103295693A (en) 2013-05-29 2013-05-29 Lightening-breakage-preventing medium-voltage insulating wire

Country Status (1)

Country Link
CN (1) CN103295693A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104733880A (en) * 2013-12-20 2015-06-24 国家电网公司 Electric transmission line and ground wire thereof
CN108154964A (en) * 2016-12-05 2018-06-12 苏永义 Insulated conductor is pressed in a kind of anti-lightning strike broken string

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01157004A (en) * 1987-12-11 1989-06-20 Fujikura Ltd Thunder-proof electric wire
JPH01246711A (en) * 1988-03-28 1989-10-02 Fujikura Ltd Lightening protective wire
CN1776983A (en) * 2005-10-12 2006-05-24 江苏省电力公司扬州供电公司 Lightning-inductive shielding line for 10KV overhead insulated conducting wire for preventing thunderstrike breakage

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01157004A (en) * 1987-12-11 1989-06-20 Fujikura Ltd Thunder-proof electric wire
JPH01246711A (en) * 1988-03-28 1989-10-02 Fujikura Ltd Lightening protective wire
CN1776983A (en) * 2005-10-12 2006-05-24 江苏省电力公司扬州供电公司 Lightning-inductive shielding line for 10KV overhead insulated conducting wire for preventing thunderstrike breakage

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
《电力设备选型手册》编写组: "《电力设备选型手册(下册)》", 30 April 2012, 中国水利水电出版社 *
张学铭等: "《化学小辞典(第二版)》", 31 August 1994, 科学技术文献出版社 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104733880A (en) * 2013-12-20 2015-06-24 国家电网公司 Electric transmission line and ground wire thereof
CN108154964A (en) * 2016-12-05 2018-06-12 苏永义 Insulated conductor is pressed in a kind of anti-lightning strike broken string

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Application publication date: 20130911