CN103337811A - Reconstruction method for insulation between 220kV two-bundle power transmission line sub-conductors - Google Patents

Reconstruction method for insulation between 220kV two-bundle power transmission line sub-conductors Download PDF

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Publication number
CN103337811A
CN103337811A CN2013103135311A CN201310313531A CN103337811A CN 103337811 A CN103337811 A CN 103337811A CN 2013103135311 A CN2013103135311 A CN 2013103135311A CN 201310313531 A CN201310313531 A CN 201310313531A CN 103337811 A CN103337811 A CN 103337811A
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CN
China
Prior art keywords
strain
conductor
binary fission
transmission line
insulation
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CN2013103135311A
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Chinese (zh)
Inventor
陆佳政
胡建平
方针
蒋正龙
赵纯
张红先
李波
Original Assignee
国家电网公司
湖南省电力公司科学研究院
湖南省湘电试研技术有限公司
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Application filed by 国家电网公司, 湖南省电力公司科学研究院, 湖南省湘电试研技术有限公司 filed Critical 国家电网公司
Priority to CN2013103135311A priority Critical patent/CN103337811A/en
Publication of CN103337811A publication Critical patent/CN103337811A/en

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Abstract

The invention provides a reconstruction method for insulation between 220kV two-bundle power transmission line sub-conductors. The method comprises the following steps: 1) recording the quantity of strain sections and equipping two-bundle fully-insulated damping spacers; 2) serially connecting first insulators; 3) serially connecting second insulators; 4) replacing two-bundle spacers; 5) replacing the two-bundle spacers by using the two-bundle fully-insulated damping spacers; and 6) measuring insulation resistance by using a megohmmeter. The method has the following advantages that 1) conditions are provided for realizing hot-line melting of ice between two-bundle sub-conductors of a 220kV alternating-current power transmission line; 2) the 220kV alternating-current power transmission line is prevented from being attacked by ice and snow; 3) the method is simple and feasible and is suitable for 220kV two-bundle power transmission lines in ice covered areas, and the two-bundle fully-insulated damping spacers are convenient to replace; and 4) the method is also suitable for the reconstruction of full insulation among other multi-bundle sub-conductors.

Description

Insulation remodeling method between 220kV binary fission transmission line sub-conductor
Technical field
The invention belongs to the electrical engineering technical field, relate in particular to the insulating method between a kind of 220kV binary fission transmission line sub-conductor.
Background technology
The interchange 220kV binary fission transmission line of China generally by a plurality of strain sections, namely is connected in the transmission pressure between strain insulator-string, and wire jumper connects.In single strain section, the 40-100 rice of whenever being separated by between the binary fission sub-conductor will be installed a binary fission conductor spacer, be used for keeping the spacing of two root leads and suppress vibration; At strain insulator-string and straight line string place, the binary fission lead is respectively by strain clamp and yoke plate, or suspension clamp links to each other with strain insulator-string or straight line string with yoke plate.Because described binary fission conductor spacer, strain clamp, suspension clamp and yoke plate are the metal manufacturing, so be difficult to keep the insulation between the two root leads in the strain section.
When 220kV binary fission powerline ice-covering, need carry out charged ice-melt to this circuit.Owing to be subjected to the restriction of ice-melt power supply capacity, can only adopt the scheme of implementing by mutually during ice-melt, and the enforcement of this scheme must assurance be treated each other whenever between two root leads of each strain section of DC ice-melting and is insulated all the time.Yet, binary fission conductor spacer, wire clamp and the yoke plate that uses between every phase binary fission sub-conductor in the present domestic 220kV circuit strain section because as above-mentioned all be that metal material is made, must cause two root leads respectively at the electric short circuit of binary fission conductor spacer, wire clamp and yoke plate installed position, thereby cause between the binary fission sub-conductor ice-melt to be interrupted.Therefore, proposing a kind of remodeling method that keeps insulation in the single strain section of binary fission transmission line between sub-conductor that makes, is the only way which must be passed of realizing the existing charged ice-melt of the single-phase binary fission lead of 220kV.
Summary of the invention
The technical problem to be solved in the present invention is at the defective of prior art, to propose the insulation remodeling method between a kind of 220kV binary fission transmission line sub-conductor.Use this method can make in each strain section and remain insulation between the binary fission sub-conductor, carry out the charged ice-melt of single-phase binary fission lead during for powerline ice-covering and create conditions, so that the calamity of ice and snow is avoided in electric power system.
Technical scheme of the present invention is that the insulation remodeling method between the 220kV binary fission transmission line sub-conductor that provides may further comprise the steps:
(1), record waits to transform the span quantity in the strain section quantity, each strain section of each phase conductor of 220kV binary fission transmission line, and the quantity of the binary fission conductor spacer between the binary fission sub-conductor in each span.Be equipped with the binary fission all insulation damping conductor spacer that equates with the quantity of the binary fission conductor spacer that records.Be equipped with first insulator that mates with the specification of the interior both sides of described strain section strain insulator-string; Be equipped with described strain section in the middle of dangle second insulator of specification coupling of string of straight line.Be equipped with a megohmmeter again;
(2), between the strain clamp of the yoke plate of the both sides strain insulator-string in each strain section that step (1) records and sub-conductor, first insulator that series connection a slice step (1) is equipped with;
(3), the straight line in the middle of step (1) records each strain section dangles between the suspension clamp of yoke plate and sub-conductor of string second insulator that a slice step of connecting (1) is equipped with;
(4), with the binary fission all insulation damping conductor spacer that step (1) is equipped with, replace the binary fission conductor spacer between each span in described each strain section;
(5), transform the quantity of the strain section of each phase conductor of 220kV binary fission transmission line according to waiting of recording of step (1), if this quantity greater than 1, is replaced with the binary fission all insulation damping conductor spacer that step (1) is equipped with the wire jumper between the adjacent described strain section with the binary fission conductor spacer; If this quantity equals 1, then directly enter step (6);
(6), the megohmmeter measurement of using step (1) to be equipped with waits to transform the insulation resistance between two root leads of each phase conductor of 220kV binary fission transmission line, if greater than 500M Ω, showing, the insulating resistance value between this measured two roots lead describedly waits that the insulation of transforming between 220kV binary fission transmission line sub-conductor transforms successfully;
The invention has the beneficial effects as follows:
1, for realizing that condition has been created in charged ice-melt between the binary fission sub-conductor of 220kV transmission line of alternation current;
2, make the 220kV transmission line of alternation current avoid the calamity of ice and snow;
3, method is simple, adapts to icing district 220kV binary fission transmission line and uses, and the replacing of binary fission all insulation damping conductor spacer is convenient;
4, this method also is fit to be generalized to all insulation transformation between other many oidiospores leads.
Embodiment
Embodiment 1:
(1), record waits to transform the span quantity in the strain section quantity, each strain section of each phase conductor of 220kV binary fission transmission line, and the quantity of the binary fission conductor spacer between the binary fission sub-conductor in each span.Be equipped with the binary fission all insulation damping conductor spacer that equates with the quantity of the binary fission conductor spacer that records.Be equipped with first insulator that mates with the specification of the interior both sides of described strain section strain insulator-string; Be equipped with described strain section in the middle of dangle second insulator of specification coupling of string of straight line.Be equipped with a megohmmeter again;
(2), between the strain clamp of the yoke plate of the both sides strain insulator-string in each strain section that step (1) records and sub-conductor, first insulator that series connection a slice step (1) is equipped with;
(3), the straight line in the middle of step (1) records each strain section dangles between the suspension clamp of yoke plate and sub-conductor of string second insulator that a slice step of connecting (1) is equipped with;
(4), with the binary fission all insulation damping conductor spacer that step (1) is equipped with, replace the binary fission conductor spacer between each span in described each strain section;
(5), transform the quantity of the strain section of each phase conductor of 220kV binary fission transmission line according to waiting of recording of step (1), this quantity is replaced with binary fission all insulation damping conductor spacer that step (1) be equipped with the wire jumper between the adjacent described strain section with the binary fission conductor spacer greater than 1;
(6), the megohmmeter measurement of using step (1) to be equipped with waits to transform the insulation resistance between two root leads of each phase conductor of 220kV binary fission transmission line, record insulating resistance value between this two roots lead greater than 500M Ω, show and describedly wait that the insulation of transforming between 220kV binary fission transmission line sub-conductor transforms successfully;
Embodiment 2:
Step (1)~(4) are with embodiment 1;
(5), transform the quantity of the strain section of each phase conductor of 220kV binary fission transmission line according to waiting of recording of step (1), this quantity equals 1, directly enters step (6);
(6), the megohmmeter measurement of using step (1) to be equipped with waits to transform the insulation resistance between two root leads of each phase conductor of 220kV binary fission transmission line, record insulating resistance value between this two roots lead also greater than 500M Ω, show that it also is successfully that described insulation of waiting to transform between 220kV binary fission transmission line sub-conductor is transformed.

Claims (1)

1. the insulation remodeling method between a 220kV binary fission transmission line sub-conductor, this method may further comprise the steps:
(1), the strain section quantity of each phase conductor of 220kV binary fission transmission line, the span quantity in each strain section waited to transform in record, and the quantity of the binary fission conductor spacer between the interior binary fission sub-conductor of each span, be equipped with the binary fission all insulation damping conductor spacer that equates with the quantity of the binary fission conductor spacer that records, be equipped with first insulator that mates with the specification of the interior both sides of described strain section strain insulator-string; Be equipped with described strain section in the middle of dangle second insulator of specification coupling of string of straight line, be equipped with a megohmmeter again;
(2), between the strain clamp of the yoke plate of the both sides strain insulator-string in each strain section that step (1) records and sub-conductor, first insulator that series connection a slice step (1) is equipped with;
(3), the straight line in the middle of step (1) records each strain section dangles between the suspension clamp of yoke plate and sub-conductor of string second insulator that a slice step of connecting (1) is equipped with;
(4), with the binary fission all insulation damping conductor spacer that step (1) is equipped with, replace the binary fission conductor spacer between each span in described each strain section;
(5), transform the quantity of the strain section of each phase conductor of 220kV binary fission transmission line according to waiting of recording of step (1), if this quantity greater than 1, is replaced with the binary fission all insulation damping conductor spacer that step (1) is equipped with the wire jumper between the adjacent described strain section with the binary fission conductor spacer; If this quantity equals 1, then directly enter step (6);
(6), the megohmmeter measurement of using step (1) to be equipped with waits to transform the insulation resistance between two root leads of each phase conductor of 220kV binary fission transmission line, if greater than 500M Ω, showing, the insulating resistance value between this measured two roots lead describedly waits that the insulation of transforming between 220kV binary fission transmission line sub-conductor transforms successfully.
CN2013103135311A 2013-07-24 2013-07-24 Reconstruction method for insulation between 220kV two-bundle power transmission line sub-conductors CN103337811A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101162831A (en) * 2007-10-12 2008-04-16 龚良贵 Divided conductor powerline with loading ice melting scheme
CN101409438A (en) * 2008-07-25 2009-04-15 中国电力工程顾问集团西北电力设计院 Ice-melting method suitable for transmission line with multiple fission conductor
CN201252380Y (en) * 2008-07-25 2009-06-03 中国电力工程顾问集团西北电力设计院 Transmission line de-icing device of bundled multi-split conductor
CN101593957A (en) * 2008-05-29 2009-12-02 四平线路器材厂 Trifid insulated damping conductor spacer
CN101710683A (en) * 2009-12-25 2010-05-19 重庆大学 Intelligent circulation anti-icing method for transmitting current by split lead

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101162831A (en) * 2007-10-12 2008-04-16 龚良贵 Divided conductor powerline with loading ice melting scheme
CN101593957A (en) * 2008-05-29 2009-12-02 四平线路器材厂 Trifid insulated damping conductor spacer
CN101409438A (en) * 2008-07-25 2009-04-15 中国电力工程顾问集团西北电力设计院 Ice-melting method suitable for transmission line with multiple fission conductor
CN201252380Y (en) * 2008-07-25 2009-06-03 中国电力工程顾问集团西北电力设计院 Transmission line de-icing device of bundled multi-split conductor
CN101710683A (en) * 2009-12-25 2010-05-19 重庆大学 Intelligent circulation anti-icing method for transmitting current by split lead

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Application publication date: 20131002