CN104008828B - A kind of discharging gap apparatus - Google Patents

A kind of discharging gap apparatus Download PDF

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Publication number
CN104008828B
CN104008828B CN201410257130.3A CN201410257130A CN104008828B CN 104008828 B CN104008828 B CN 104008828B CN 201410257130 A CN201410257130 A CN 201410257130A CN 104008828 B CN104008828 B CN 104008828B
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fixed plate
fastener
gap
head end
bottom electrode
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CN104008828A (en
Inventor
陈希
戚力彦
冯学斌
缪晶晶
王道根
徐志磊
沈辉
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State Grid Corp of China SGCC
State Grid Zhejiang Electric Power Co Ltd
China Electric Power Research Institute Co Ltd CEPRI
Jiangdong Fittings Equipment Co Ltd
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State Grid Corp of China SGCC
State Grid Zhejiang Electric Power Co Ltd
China Electric Power Research Institute Co Ltd CEPRI
Jiangdong Fittings Equipment Co Ltd
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Abstract

The invention discloses a kind of discharging gap apparatus, the discharging gap apparatus are located on ground insulator string, the discharging gap apparatus include the first fastener, second fastener, first fixed plate, second fixed plate, Top electrode and bottom electrode, first fixed plate head end is fixed on the high-pressure side of ground insulator string by the first fastener, the end of the first fixed plate connects the head end of Top electrode, the end of Top electrode is trick arc end, second fixed plate head end is fixed on the low-pressure end of ground insulator string by the second fastener, the end connection bottom electrode head end of the second fixed plate, the end arc end of bottom electrode, arc end is recruited to leave space with arc end.Beneficial effects of the present invention:Ground insulator gap is adjustable clearance, if gap is unsatisfactory for ground wire deicing or lightning protection properties requirement in Practical Project, can be adjusted, simple operation.

Description

A kind of discharging gap apparatus
Technical field
The present invention relates to a kind of discharging gap apparatus.
Background technology
Discharging gap is the conventional gas discharge device of High-Voltage Technology, is generally used to control the break-make of high voltage circuit, Various overvoltage are prevented using the intermediate air gap discharging in advance of the structure(Such as thunder and lightning, operation overvoltage)To gland high The protection of the high-tension apparatuses such as pipe, effect is analogous to arrester and overvoltage protection device.Discharging gap is generally made up of two electrodes, One connects high-pressure side, and another connects low-pressure end, is state of insulation between two electrodes, is hit when the voltage between two electrodes reaches When wearing voltage, insulate breakdown into conducting state, after afterflow disappearance, become exhausted due to having between two electrodes of self- recoverage for insulating Edge state, so that loop is off again.
Transmission line of electricity is located in wilderness, is easily struck by lightning.Near the direct attack lightning overvoltage and thunderbolt circuit caused by thunderbolt circuit The lightning induced voltage that ground causes, i.e., the atmospheric over-voltage often occurred on so-called transmission line of electricity.Insulator caused by it dodges Network, line tripping and lightning surge intrusion electric substation damage electrical equipment accident and occupy significant portion in the total accident of power network.
Therefore, to solve the above problems, spy provides a kind of new technical scheme.
The content of the invention
The present invention provides a kind of discharging gap apparatus.
The technical solution adopted by the present invention is:
A kind of discharging gap apparatus, the discharging gap apparatus are located on ground insulator string, the discharging gap apparatus bag The first fastener, the second fastener, the first fixed plate, the second fixed plate, Top electrode and bottom electrode are included, described first fixes wrench The high-pressure side of ground insulator string is fixed at end by the first fastener, and the end of the first fixed plate connects the head end of Top electrode, To recruit arc end, the second fixed plate head end is fixed on ground insulator string by the second fastener for the end of the Top electrode Low-pressure end, the end connection bottom electrode head end of the second fixed plate, the end arc end of the bottom electrode, the trick arc end and striking Leave space in end.
The trick arc end bends from lower to upper, and the arc end bends from top to bottom.
The angle that the angle for recruiting arc end to bend from lower to upper and arc end bend from top to bottom is 30-45 °.
A kind of discharging gap apparatus, the discharging gap apparatus are located on ground insulator string, the discharging gap apparatus bag Include the first fastener, the second fastener, the 3rd fastener, the 4th fastener, the first fixed plate, the second fixed plate, Top electrode and Bottom electrode, the first fixed plate head end is fixed on the high-pressure side of ground insulator string, the first fixed plate by the first fastener The end head end perpendicular fastener that passes through the 3rd fastener and Top electrode, the second fixed plate head end consolidated by the second fastener Due to the low-pressure end of ground insulator string, the end of the second fixed plate passes through the 4th fastener and bottom electrode head end perpendicular fastener, The bottom electrode tilts upward bending by middle part, and space is left in the Top electrode end with the bending section of bottom electrode.
Angle of inclination in the middle part of the bottom electrode is 130-140 °.
A kind of discharging gap apparatus, the discharging gap apparatus are located on ground insulator string, the discharging gap apparatus bag The first fastener, the second fastener, the first fixed plate, the second fixed plate, Top electrode and bottom electrode are included, described first fixes wrench The high-pressure side of ground insulator string is fixed at end by the first fastener, and the end of the first fixed plate connects the head end of Top electrode, The first fixed plate end forms angle with Top electrode head end, and the second fixed plate head end is fixed on by the second fastener The low-pressure end of ground insulator string, the end connection bottom electrode head end of the second fixed plate, the second fixed plate end and lower electricity Cartridge end is vertical, and the bottom electrode tilts upward bending by middle part, the junction of the first fixed plate and Top electrode and under Leave gap and tip is installed in gap location in the knee of electrode.
The Top electrode is made up of band iron, and bottom electrode is made up of round steel.
Shape is angled 45-135 ° between first fixed plate end and Top electrode head end, the oblique bending in the middle part of bottom electrode Angle be 130-140 °.
The beneficial effects of the invention are as follows:Ground insulator gap is adjustable clearance, if gap is discontented in Practical Project Sufficient ground wire deicing or lightning protection properties requirement, can be adjusted, simple operation;
It is effective lightning protection device, insulator chain end, simple structure, maintenance side is arranged on certain gap Just, used cooperatively with automatic reclosing in systems, both lightning current can be in time grounded, again can to user's uninterrupted power supply, from And play a part of to prevent insulator surface flashover, protection electrical equipment, maintain circuit normally to run;
Discharging gap is installed on ground insulator string, is got up through small―gap suture insulation against ground relative to by lightning conducter, only Gap breakdown during thunderbolt, ground wire grounding, the added losses that electric current causes in lightning conducter when normally being run This reduces both circuit, Lightning conducter can be used as connection again;
During gap discharge, electric arc is in electrode at a distance of most nearby forming, and the electric arc that erietiform gap top is constituted immediately is fast Speed is elongated, and this electric arc is generally easy to extinguish, and can also be pulled up because of electric arc, and electrode is burnt all in goat's horn gap end, and gap Will not then be burnt at distance minimum, so as to ensure correct operation next time;
An apiculus is installed additional in gap location, to increase gap electrical field unevenness.
Brief description of the drawings
The present invention is described in further detail with reference to the accompanying drawings and detailed description.
Fig. 1 is the structural representation of embodiment 1, and wherein a is suspension string gold utensil, and b is strain insulator-string gold utensil.
Fig. 2 is the structural representation of embodiment 2, and wherein a is suspension string gold utensil, and b is strain insulator-string gold utensil.
Fig. 3 is the structural representation of embodiment 3, and wherein a is suspension string gold utensil, and b is strain insulator-string gold utensil.
Wherein:1st, the first fastener, the 2, second fastener, the 3, first fixed plate, the 4, second fixed plate, 5, Top electrode, 6, Bottom electrode, 7, ground insulator string, 8, recruit arc end, 9, arc end, the 10, the 3rd fastener, the 11, the 4th fastener, 12, tip.
Specific embodiment
In order to deepen the understanding of the present invention, it is described in further detail to of the invention below in conjunction with embodiment and accompanying drawing, The embodiment is only used for the explanation present invention, does not constitute the restriction to protection scope of the present invention.
Embodiment 1
As shown in figure 1, a kind of discharging gap apparatus of the invention, the discharging gap apparatus are located on ground insulator string, Discharging gap apparatus include the first fastener 1, the second fastener 2, the first fixed plate 3, the second fixed plate 4, Top electrode 5 and lower electricity Pole 6, the head end of the first fixed plate 3 is fixed on the high-pressure side of ground insulator string 7, the end of the first fixed plate 3 by the first fastener 1 The head end of end connection Top electrode 5, to recruit arc end 8, the head end of the second fixed plate 4 is fixed by the second fastener 2 for the end of Top electrode 5 In the low-pressure end of ground insulator string 7, the end connection head end of bottom electrode 6 of the second fixed plate 4, the end arc end of bottom electrode 6 9, recruit arc end 8 to leave space with arc end 9, recruit arc end 8 to bend from lower to upper, arc end 9 bends from top to bottom, recruit arc end 8 by Under the angle that bends from top to bottom of the angle that up bends and arc end 9 be 30-45 °, during gap discharge, electric arc is in electrode phase Away from most nearby being formed, the electric arc that twin horn cleat shape gap top is constituted immediately is elongated rapidly, and this electric arc is generally easy to extinguish, Can be because of electric arc pull-up, electrode is burnt all in goat's horn gap end, and will not then be burnt at clearance distance minimum, so that under ensureing Correct operation.
It is effective lightning protection device, insulator chain end, simple structure, maintenance side is arranged on certain gap Just, used cooperatively with automatic reclosing in systems, both lightning current can be in time grounded, again can to user's uninterrupted power supply, from And play a part of to prevent insulator surface flashover, protection electrical equipment, maintain circuit normally to run;
Discharging gap is installed on ground insulator string, is got up through small―gap suture insulation against ground relative to by lightning conducter, only Gap breakdown during thunderbolt, ground wire grounding, the added losses that electric current causes in lightning conducter when normally being run This reduces both circuit, Lightning conducter can be used as connection again.
Embodiment 2
As shown in Fig. 2 a kind of discharging gap apparatus of the invention, the discharging gap apparatus are located on ground insulator string 7, Discharging gap apparatus include the first fastener 1, the second fastener 2, the 3rd fastener 10, the 4th fastener 11, the first fixed plate 3rd, the second fixed plate 4, Top electrode 5 and bottom electrode 6, the head end of the first fixed plate 3 are fixed on ground insulator by the first fastener 1 The high-pressure side of string 7, by the 3rd fastener 10 and the head end perpendicular fastener of Top electrode 5, second fixes for the end of the first fixed plate 3 The head end of plate 4 is fixed on the low-pressure end of ground insulator string 7 by the second fastener 2, and the end of the second fixed plate 4 is tight by the 4th Firmware 11 and the head end perpendicular fastener of bottom electrode 6, bottom electrode 6 tilt upward bending, the end of Top electrode 5 and bottom electrode by middle part 6 bending section leaves space, and the angle of inclination at the middle part of bottom electrode 6 is 130-140 °, the gap between Top electrode 5 and bottom electrode 6 Can be adjusted by the 3rd fastener 10 and the 4th fastener 11 respectively, during gap discharge, electric arc is in electrode at a distance of most nearby Formed, the electric arc that single erietiform gap top is constituted immediately is elongated rapidly, and this electric arc is generally easy to extinguish, also can be because of electric arc Pull-up, electrode is burnt all in goat's horn gap end, and will not then be burnt at clearance distance minimum, so as to ensure next time correct Action.
It is effective lightning protection device, insulator chain end, simple structure, maintenance side is arranged on certain gap Just, used cooperatively with automatic reclosing in systems, both lightning current can be in time grounded, again can to user's uninterrupted power supply, from And play a part of to prevent insulator surface flashover, protection electrical equipment, maintain circuit normally to run;
Discharging gap is installed on ground insulator string, is got up through small―gap suture insulation against ground relative to by lightning conducter, only Gap breakdown during thunderbolt, ground wire grounding, the added losses that electric current causes in lightning conducter when normally being run This reduces both circuit, Lightning conducter can be used as connection again.
Embodiment 3
As shown in figure 3, a kind of discharging gap apparatus of the invention, the discharging gap apparatus are located on ground insulator string 7, Discharging gap apparatus include the first fastener 1, the second fastener 2, the first fixed plate 3, the second fixed plate 4, Top electrode 5 and lower electricity Pole 6, the head end of the first fixed plate 3 is fixed on the high-pressure side of ground insulator string 7, the end of the first fixed plate 3 by the first fastener 1 The head end of end connection Top electrode 5, the end of the first fixed plate 3 forms angle with the head end of Top electrode 5, and the head end of the second fixed plate 4 passes through Second fastener 2 is fixed on the low-pressure end of ground insulator string 7, the end connection head end of bottom electrode 6 of the second fixed plate 4, second The end of fixed plate 4 is vertical with the head end of bottom electrode 6, and bottom electrode 6 tilts upward bending by middle part, the first fixed plate 3 with it is upper The junction of electrode 5 and the knee of bottom electrode 6 leave gap and install tip 12 in gap location, and Top electrode 5 is made up of band iron, Bottom electrode 6 is made up of round steel, and shape is angled 45-135 °, in bottom electrode 6 between the end of the first fixed plate 1 and the head end of Top electrode 5 The angle of the oblique bending in portion is 130-140 °, an apiculus is installed additional in gap location, to increase gap electrical field unevenness.
It is effective lightning protection device, insulator chain end, simple structure, maintenance side is arranged on certain gap Just, used cooperatively with automatic reclosing in systems, both lightning current can be in time grounded, again can to user's uninterrupted power supply, from And play a part of to prevent insulator surface flashover, protection electrical equipment, maintain circuit normally to run;
Discharging gap is installed on ground insulator string, is got up through small―gap suture insulation against ground relative to by lightning conducter, only Gap breakdown during thunderbolt, ground wire grounding, the added losses that electric current causes in lightning conducter when normally being run This reduces both circuit, Lightning conducter can be used as connection again.
The electrical test requirement of discharging gap of the present invention:
According to the function and design requirement of discharging gap apparatus, following several electric type approval tests should be done.
(1)Lightning impulse voltage test or 50% all-wave impulse flashover voltage are tested
This experiment mainly determines dielectric strength of the discharging gap to lightning surge, to play the work of protection insulator With its dielectric strength is necessarily less than the impulse flashover voltage of insulator chain, must not occur along all or part under test voltage Insulator surface flashover.
By IEC standard requirement, lightning impulse simulation is carried out using 1.2/50 standard impulse waveform.Conventional probability is 50% Impulse flashover voltage value is that its thunder and lightning does withstanding voltage, can be carried out with insertion or lifting and lowering method during experiment, its numerical value conversion to mark 6 ~ 7 times of circuit phase voltages as quasi- atmospheric condition is latter.
(2)Power frequency wet flash-over voltage is tested
By IEC standard requirement, what is imposed standard intraocular on gap and measure causes the voltage arithmetic average of power frequency flashover Value, can also take the flashover voltage that probability is 50%.
The purpose is to the ability for examining gap that operating voltage and switching overvoltage are tolerated under circuit service condition.Its numerical value General 4 ~ 4.5 times of circuit phase voltages.
(3)The wet withstanding voltage of power frequency
Operating experience shows that undergoing one minute electrical equipment of ac voltage withstanding experiment can typically ensure safe operation. The predetermined test voltage of 75% design typically is taken in IEC standard, then with per second for the speed of test voltage 2% rises a voltage Flashover for one minute or puncture in grade, maintenance, you can access there is no.But also can be initial point electricity by the 95% of power frequency wet flash-over voltage Pressure is maintained one minute, 2% is declined if it still there is flashover general i.e. tolerable.
(4)Radio interference test
Discharging gap is installed on insulator chain, certainly will increase its radio interference.Insulated by Malaysian bidding documents 275kV The requirement of substring is less than 46db.
(5)Initial corona voltage experiment
Corona test requirement on discharging gap is analogous to other with voltage class and with altitude hardware corona tests requirement.
The above, is only presently preferred embodiments of the present invention, is not the limit for making any other form to the present invention System, and any modification for being made according to technical spirit of the invention or equivalent variations, still fall within model required for protection of the invention Enclose.

Claims (1)

1. a kind of discharging gap apparatus, it is characterised in that:The discharging gap apparatus are located on ground insulator string, between the electric discharge Gap device includes the first fastener, the second fastener, the first fixed plate, the second fixed plate, Top electrode and bottom electrode, described first Fixed plate head end is fixed on the high-pressure side of ground insulator string, the end connection Top electrode of the first fixed plate by the first fastener Head end, it is 45-135 ° that the first fixed plate end and Top electrode head end form angle, and the second fixed plate head end leads to Cross the low-pressure end that the second fastener is fixed on ground insulator string, the end connection bottom electrode head end of the second fixed plate, described the Two fixed plate ends are vertical with bottom electrode head end, and the bottom electrode tilts upward bending, the angle of oblique bending by middle part It is 130-140 °, an apiculus is installed additional in gap location, to increase gap electrical field unevenness, in the first fixed plate and upper electricity The junction of pole and the knee of bottom electrode leave gap and install tip in gap location, and the Top electrode is made up of band iron, under Electrode is made up of round steel.
CN201410257130.3A 2014-06-11 2014-06-11 A kind of discharging gap apparatus Active CN104008828B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106054006B (en) * 2016-08-08 2019-04-05 国网湖南省电力公司 The low pressure starting the arc and the adjustable power frequency continued flow experimental rig of clearance distance and test method
CN107800095A (en) * 2016-08-29 2018-03-13 深圳带路科技有限公司 A kind of ground wire energy-saving safe attachment means
CN108254661B (en) * 2018-02-01 2021-04-16 南方电网科学研究院有限责任公司 Hardware discharge voltage test system and method
CN110082652B (en) * 2019-04-29 2021-09-03 电力规划总院有限公司 Selection method and device for arcing horn and insulator string in overhead transmission line

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2687923Y (en) * 2004-02-12 2005-03-23 中国电力科学研究院 Overhead circuit parallel gap lightning protection device
CN2779573Y (en) * 2005-01-13 2006-05-10 中国电力科学研究院 Compound transformer neutral point protection gap
CN201075318Y (en) * 2007-06-19 2008-06-18 北京交通大学 Insulator string electrical arc discharge apparatus
CN201243186Y (en) * 2007-11-30 2009-05-20 北京市电力公司 Parallel connection clearance device for V-shaped insulator string of high-tension overhead line
CN203014162U (en) * 2012-12-13 2013-06-19 河南电力器材公司 500-kilovolt overhead transmission line suspension-string parallel-gap anti-lighting protective device
CN204010854U (en) * 2014-06-11 2014-12-10 国家电网公司 A kind of discharging gap apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2687923Y (en) * 2004-02-12 2005-03-23 中国电力科学研究院 Overhead circuit parallel gap lightning protection device
CN2779573Y (en) * 2005-01-13 2006-05-10 中国电力科学研究院 Compound transformer neutral point protection gap
CN201075318Y (en) * 2007-06-19 2008-06-18 北京交通大学 Insulator string electrical arc discharge apparatus
CN201243186Y (en) * 2007-11-30 2009-05-20 北京市电力公司 Parallel connection clearance device for V-shaped insulator string of high-tension overhead line
CN203014162U (en) * 2012-12-13 2013-06-19 河南电力器材公司 500-kilovolt overhead transmission line suspension-string parallel-gap anti-lighting protective device
CN204010854U (en) * 2014-06-11 2014-12-10 国家电网公司 A kind of discharging gap apparatus

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