CN102162830A - Experimental device for simulating high-voltage transmission line flashover discharge caused by forest fire - Google Patents

Experimental device for simulating high-voltage transmission line flashover discharge caused by forest fire Download PDF

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Publication number
CN102162830A
CN102162830A CN2011100838937A CN201110083893A CN102162830A CN 102162830 A CN102162830 A CN 102162830A CN 2011100838937 A CN2011100838937 A CN 2011100838937A CN 201110083893 A CN201110083893 A CN 201110083893A CN 102162830 A CN102162830 A CN 102162830A
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CN
China
Prior art keywords
metal electrode
conducting wire
wire
transmission line
analog conducting
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
CN2011100838937A
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Chinese (zh)
Inventor
张云
张林鹤
陈海翔
樊灵孟
尤飞
赖江
全浩
朱霁平
周建军
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.)
Wuzhou Bureau of Extra High Voltage Power Transimission Co
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Wuzhou Bureau of Extra High Voltage Power Transimission Co
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Publication date
Application filed by Wuzhou Bureau of Extra High Voltage Power Transimission Co filed Critical Wuzhou Bureau of Extra High Voltage Power Transimission Co
Priority to CN2011100838937A priority Critical patent/CN102162830A/en
Publication of CN102162830A publication Critical patent/CN102162830A/en
Pending legal-status Critical Current

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Abstract

The invention discloses an experimental device for simulating high-voltage transmission line flashover discharge caused by forest fire. The experimental device comprises an industrial frequency voltage generator, a connecting wire and a simulation wire which are connected sequentially, and a height adjustable suspension mechanism, wherein the connecting wire is connected to one end of the simulation wire; the simulation wire is used for bearing industrial frequency voltage; an industrial frequency voltage divider is connected to the connecting wire; the height adjustable suspension mechanism is connected to two sides of the simulation wire and used for suspending the simulation wire, and an insulator is arranged between the suspension mechanism and the simulation wire; a fireproofing material layer is arranged on ground under the simulation wire; a metal panel is arranged on the fireproofing material layer; one end of the metal panel is connected to a grounding end; the surface of the metal panel is connected with a metal electrode which is arranged vertically and has a needle-like conducting rod structure; a burning table is arranged on the surface of the metal panel around the metal electrode by taking the metal electrode as the middle shaft; and the top end of the metal electrode is higher than the surface of the burning table.

Description

A kind of simulating forest fire causes the experimental provision of ultra-high-tension power transmission line flashover discharge
Technical field
The present invention relates to the safe operation and the forest fire secondary disaster field of ultra-high-tension power transmission line, be specifically related to the experimental provision that the simulating forest fire causes the discharge of ultra-high-tension power transmission line flashover.
Background technology
China's part ultra-high-tension power transmission line is through the mountain area.In recent years, a lot of forest fires taking place caused ultra-high-tension power transmission line tripping operation accident, had a strong impact on the safe and stable operation of electrical network.Generally speaking, air possesses the good insulation performance performance, can serve as the insulating medium between high-tension bus-bar and the ground object.In the ultra-high-tension power transmission line design specifications, made regulation for distance between lead and the ground and the distance between the lead.Yet in case forest fire takes place near the transmission line of electricity, vegetation flame and flue gas can cause the air breakdown field intensity to descend, and striking distance is increased, thereby may cause the clearance breakdown and cause the discharge of ultra-high-tension power transmission line flashover.But, also lack at present the experiment measuring of ultra-high-tension power transmission line flashover discharge under the condition of the scene of a fire, can't the quantitative test fire hazard environment under the flashover flash-over characteristic of ultra-high-tension power transmission line.
Summary of the invention
The objective of the invention is to overcome above-mentioned technical difficulty, develop a kind of mountain fire of can simulating and cause the experimental provision that the ultra-high-tension power transmission line flashover discharges.
For realizing above purpose, the present invention has taked following technical scheme: a kind of simulating forest fire causes the experimental provision of ultra-high-tension power transmission line flashover discharge, comprise power-frequency voltage generator, the connection lead that connects successively, the analog conducting wire that is used to carry power-frequency voltage, connecting lead is connected on the end of analog conducting wire, the power-frequency voltage generator is used to produce the industrial frequency AC high pressure, outputs on the analog conducting wire; Also be connected with the power-frequency voltage voltage divider on the connection lead, it is used to measure the size of power frequency high voltage; Be used to the adjustment height hitch that is connected the both sides of analog conducting wire and hangs analog conducting wire, be provided with insulator between hitch and the analog conducting wire, it is used for insulating between hitch and the analog conducting wire; On the ground under the analog conducting wire, be provided with refractory masses, refractory masses is provided with metal plate, one end of metal plate is connected to earth terminal, the metal plate surface is connected with metal electrode, metal electrode vertically is provided with, and be needle-like conductive bar structure, be to be provided with combustion platform around metal electrode on axis, the metal plate surface with the metal electrode, combustion platform is used for placing the simulation burning things which may cause a fire disaster to produce the scene of a fire; The top of described metal electrode exceeds the combustion platform surface; Refractory masses is used to support combustion platform and metal electrode, and prevents the destruction of fiery radiation to ground.
The present invention compared with prior art, have following advantage: the present invention can realize the experiment measuring of scene of a fire mesohigh transmission line of electricity flashover discharge, and effectively analyze contrast, and can provide effective reference for wiring in the ultra-high-tension power transmission line work progress of reality, reduce potential safety hazard; Vertically the needle-like metal electrode that is provided with can guarantee that the discharge path end points fixes, and has eliminated the randomness of discharge path.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments content of the present invention is described in further details.
Embodiment:
See also shown in Figure 1, a kind of simulating forest fire causes the experimental provision of ultra-high-tension power transmission line flashover discharge, comprise the power-frequency voltage generator 1, connection lead 11, the analog conducting wire 5 that connect successively, connect lead 11 and be connected on the end of analog conducting wire 5, on connection lead 11, also be connected with power-frequency voltage voltage divider 2; Be used to the adjustment height hitch 3 that is connected the both sides of analog conducting wire 5 and hangs analog conducting wire 5, the connecting line between hitch 3 and the analog conducting wire 5 is provided with insulator 4; On the ground under the analog conducting wire 5, be provided with refractory masses 9, refractory masses 9 is provided with metal plate 8, one end of metal plate 8 is connected to earth terminal 10, metal plate 8 surfaces are connected with metal electrode 7, metal electrode 7 vertically is provided with, and be needle-like conductive bar structure, be axis, on metal plate 8 surfaces, be provided with combustion platform 6 with metal electrode 7 around metal electrode 7; The top of metal electrode 7 exceeds combustion platform 6 surfaces and is provided with.
The experimental technique that present embodiment is used this experimental provision comprises following key step:
1) hi-line is located certain altitude directly over being arranged in combustion platform 6, record wire type and height.Metal electrode 7 is by linking to each other and ground connection with metal plate 8, and 1~2cm is stretched out from combustion platform 6 centers in metal electrode 7 tops, serves as ground-electrode, is convenient to observe the discharge path experiment.
2) selected combustion platform 6, the flame characteristic of demarcation combustion platform 6; The simulation burning things which may cause a fire disaster that combustion platform is placed is elected the grillage burning things which may cause a fire disaster as.
3) use calibrated combustion platform 6 to produce the combustion flame of enough height, analog conducting wire 5 is in the flame all the time.Progressively pressurize until the flashover discharge for analog conducting wire 5, measure wire voltage and ground current in this process.
4) adjust the type of combustion platform and power (in the present embodiment owing to select the grillage burning things which may cause a fire disaster for use, then the grillage number that can stack according to the adjustment of grillage combustion law) according to the combustion platform combustion law, change the distance of hi-line and ground-electrode, repeatedly test.Under the same terms, test 2-4 time.
In addition, test does not have the aerial voltage breakdown of hi-line, benchmark as a comparison under the flame situation.
By the contrast experiment, can specifically study the breakdown characteristics of clearance under the grillage fire action between the power frequency high voltage lead, and analyze flame high temperature and ionization the rule that influences breakdown characteristics.
Metal electrode 7 can be selected iron wire for use in the present embodiment, and metal plate 8 can be selected steel plate for use as the concrete parts of implementing).
Above-listed detailed description is at the specifying of possible embodiments of the present invention, and this embodiment is not in order to limiting claim of the present invention, and the equivalence that all the present invention of disengaging do is implemented or change, all should be contained in the claim of this case.

Claims (1)

1. a simulating forest fire causes the experimental provision that the ultra-high-tension power transmission line flashover discharges, it is characterized in that: comprise the power-frequency voltage generator (1), connection lead (11), the analog conducting wire (5) that connect successively, connect lead (11) and be connected on the end of analog conducting wire (5), on connection lead (11), also be connected with power-frequency voltage voltage divider (2); Be used to the adjustment height hitch (3) that is connected the both sides of analog conducting wire (5) and hangs analog conducting wire (5), be provided with insulator (4) between hitch (3) and the analog conducting wire (5); Be provided with refractory masses (9) on the ground under the analog conducting wire (5), refractory masses (9) is provided with metal plate (8), and an end of metal plate (8) is connected to earth terminal (10); Metal plate (8) surface is connected with metal electrode (7), metal electrode (7) vertically is provided with, and be needle-like conductive bar structure, be axis, on metal plate (8) surface, be provided with combustion platform (6) that with metal electrode (7) top of described metal electrode (7) exceeds combustion platform (6) surface around metal electrode (7).
CN2011100838937A 2011-04-02 2011-04-02 Experimental device for simulating high-voltage transmission line flashover discharge caused by forest fire Pending CN102162830A (en)

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Application Number Priority Date Filing Date Title
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102680839A (en) * 2012-06-01 2012-09-19 湖南省电力公司科学研究院 Testing method for forest fire trip of transmission line
CN103941129A (en) * 2014-05-09 2014-07-23 国家电网公司 Power transmission line forest fire trip comparison test method capable of differentiating and analyzing discharging causes
CN103969558A (en) * 2014-05-08 2014-08-06 国家电网公司 Testing device for simulating process of triggering trip by transmission line forest fire
CN104049189A (en) * 2014-06-24 2014-09-17 国家电网公司 Device for detecting circuit phase earth and interphase interval discharge characteristic under simulation forest fire condition
CN105513231A (en) * 2016-01-12 2016-04-20 苏州华电电气股份有限公司 Emulational sound-light alarming device
CN105754213A (en) * 2015-12-25 2016-07-13 郑州金土地能源科技有限公司 Straw-containing wood-plastic outdoor floor and production method thereof
CN106597230A (en) * 2016-11-21 2017-04-26 华南理工大学 Apparatus and method for measuring along-surface discharge distance between high-voltage wire and conductor
CN106707113A (en) * 2016-11-21 2017-05-24 华南理工大学 Device and method for measuring induced discharge distance between high-voltage lead wire and conductor
CN107179485A (en) * 2017-05-22 2017-09-19 中国电力科学研究院 A kind of unmanned plane polling transmission line operation phase ground safe distance test method
CN108789492A (en) * 2018-06-21 2018-11-13 广州供电局有限公司 Amphibious hot line robot insulation distance test device and method

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CN202057763U (en) * 2011-04-02 2011-11-30 中国南方电网有限责任公司超高压输电公司梧州局 Experimental device of simulating high voltage transmission line flashover discharge triggered by forest fire

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CN202057763U (en) * 2011-04-02 2011-11-30 中国南方电网有限责任公司超高压输电公司梧州局 Experimental device of simulating high voltage transmission line flashover discharge triggered by forest fire

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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102680839B (en) * 2012-06-01 2014-05-14 湖南省电力公司科学研究院 Testing method for forest fire trip of transmission line
CN102680839A (en) * 2012-06-01 2012-09-19 湖南省电力公司科学研究院 Testing method for forest fire trip of transmission line
CN103969558A (en) * 2014-05-08 2014-08-06 国家电网公司 Testing device for simulating process of triggering trip by transmission line forest fire
CN103941129B (en) * 2014-05-09 2015-03-18 国家电网公司 Power transmission line forest fire trip comparison test method capable of differentiating and analyzing discharging causes
CN103941129A (en) * 2014-05-09 2014-07-23 国家电网公司 Power transmission line forest fire trip comparison test method capable of differentiating and analyzing discharging causes
CN104049189A (en) * 2014-06-24 2014-09-17 国家电网公司 Device for detecting circuit phase earth and interphase interval discharge characteristic under simulation forest fire condition
CN105754213B (en) * 2015-12-25 2018-06-29 郑州金土地能源科技有限公司 A kind of stalk wood moulding outdoor floor and its production method
CN105754213A (en) * 2015-12-25 2016-07-13 郑州金土地能源科技有限公司 Straw-containing wood-plastic outdoor floor and production method thereof
CN105513231A (en) * 2016-01-12 2016-04-20 苏州华电电气股份有限公司 Emulational sound-light alarming device
CN106597230A (en) * 2016-11-21 2017-04-26 华南理工大学 Apparatus and method for measuring along-surface discharge distance between high-voltage wire and conductor
CN106597230B (en) * 2016-11-21 2019-08-20 华南理工大学 A method of measurement high-voltage conducting wires and conductor creeping discharge distance
CN106707113A (en) * 2016-11-21 2017-05-24 华南理工大学 Device and method for measuring induced discharge distance between high-voltage lead wire and conductor
CN106707113B (en) * 2016-11-21 2019-08-20 华南理工大学 A method of measurement high-voltage conducting wires and conductor induction discharge distance
CN107179485A (en) * 2017-05-22 2017-09-19 中国电力科学研究院 A kind of unmanned plane polling transmission line operation phase ground safe distance test method
CN108789492A (en) * 2018-06-21 2018-11-13 广州供电局有限公司 Amphibious hot line robot insulation distance test device and method
CN108789492B (en) * 2018-06-21 2020-09-18 广州供电局有限公司 Device and method for testing insulation distance of amphibious live working robot

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Application publication date: 20110824