CN104836154A - Method for repairing overheating defect of tension jumper drainage plate in on-load state - Google Patents
Method for repairing overheating defect of tension jumper drainage plate in on-load state Download PDFInfo
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- CN104836154A CN104836154A CN201510236726.XA CN201510236726A CN104836154A CN 104836154 A CN104836154 A CN 104836154A CN 201510236726 A CN201510236726 A CN 201510236726A CN 104836154 A CN104836154 A CN 104836154A
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Abstract
The invention discloses a method for repairing the overheating defect of a tension jumper drainage plate in an on-load state. T-type wiring clamps of corresponding models are chosen according to a drainage plate wire and a drainage plate jumper, a drainage line is connected between the two T-type wiring clamps to form a shunting device, and then the shunting device is connected to the drainage plate wire and the drainage plate jumper to form shunting channels; after the temperature of an overheated drainage plate decreases to a range acceptable to the human body, the drainage plate is opened and processed according to specific reasons, and the drainage plate is re-fixed and reconnected after processing; and the shunting device is dissembled, charged workers are out of equipotential, and operation ends. The method of the invention is suitable for processing overheating of both 110kV and above on-load transmission lines and 110kV and above on-load buses and down lead connecting clamps in substations. Therefore, the method has a wide range of application and has strong practical significance of popularization.
Description
Technical field:
The present invention relates to a kind of on-load overhaul plan strain insulator wire jumper drainage plate overheating defect method.
Background technology:
Transmission line wire belongs to current caused hot type equipment, when current－carrying conductor puts into operation, owing to there is certain resistance, some electric energy loss inevitable, thus the temperature of current－carrying conductor is raised, wherein strain insulator wire jumper connect parallel groove clamp and strain insulator drainage plate with bolts be than be easier to generate heat position, reason is that the bad connection of drainage connector causes contact resistance to become large, and cause the reason of bad connection to have: (1) is by the restriction of mechanical processing technique, the impossible complete bright and clean perfection of Surface Machining of wire and tie point, two metal surfaces of contact are not the contact of complete contact-making surface, but scatter the contact of some points on the contact surface, namely real contact area is less than Theoretical Area, (2) installation does not meet technological requirement, the non-Ex-all oxide layer of contact surface as connector and other dirt, conductive paste are smeared inequality and are not done sealing process, maintenance, install connect in do not add spring washer, nut tighten degree not, firmly uneven, connector is bending not etc. all can not reduce quality of connection for fastening bolt, connector inside conductor is not isometrical etc. causes contact area to reduce, (3) drainage thread itself is not by tension force effect, under the effect of the mechanical force such as wind-force or vibration, and the loading of line period and the cyclic variation of ambient temperature, connector is connected lax, pressure is inadequate, (4) circuit long operational time causes spring washer aging, and connector is connected lax, the pollution for a long time by corrosivity dust such as rain, snow, mist, pernicious gas, acid, alkali, salt is corroded, and causes and connects gold utensil junction oxidation etc.
When transmission line carries large load, drainage plate contact resistance is large and generate heat, and producing vicious circle, contact resistance becomes large, heating temp increases, oxidation contact resistance is larger, heating is more serious until drainage plate heating is blown, and brings great threat to the safe operation of electrical network.Infrared measurement of temperature work just becomes necessity work all can carried out every year, the superheating phenomenon existed by thermometric Timeliness coverage for this reason, so that eliminate further, ensures that line security runs.
Summary of the invention:
For overcoming the defect of prior art, the object of the present invention is to provide a kind of on-load overhaul plan strain insulator wire jumper drainage plate overheating defect method, by using T binding clip, meeting the drainage thread of current-carrying requirement, realize the object of on-load overhaul plan strain insulator wire jumper drainage plate overheating defect.
Technical solution problem of the present invention adopts following technical scheme:
On-load overhaul plan strain insulator wire jumper drainage plate overheating defect method, operates as follows:
A, whether overheated, if then enter next step if detecting Awaiting Overhaul strain rod tower drainage plate by infrared measurement of temperature;
B, select the T binding clip of corresponding model and the drainage thread of corresponding model according to the model of Awaiting Overhaul drainage plate wire, described drainage thread need meet the requirement of ampacity, and namely the diameter of drainage thread is not less than the diameter of wire of Awaiting Overhaul drainage plate wire jumper;
C, by surface personnel the two ends of described drainage thread to be connected respectively on two described T binding clips and to form part flow arrangement;
After d, live line working personnel equipotential, two of drainage thread two ends T binding clips are connected with the wire in Awaiting Overhaul drainage plate downstream and drainage plate wire jumper respectively, form split channel;
E, after overheated drainage plate temperature drops to human body tolerance interval, drainage plate is opened rear according to produce concrete reason process, after being disposed, retighten connection;
F, dismounting part flow arrangement, live line working personnel depart from equipotential;
G, the operation of on-load overhaul plan strain insulator wire jumper drainage plate overheating defect complete.
The wire type of Awaiting Overhaul drainage plate wire jumper is LGJ-240, LGJ-300, LGJ-400, and the diameter of described drainage thread selects the diameter of wire being not less than overheated drainage plate wire jumper.
Compared with the prior art, beneficial effect of the present invention is embodied in:
1, the present invention mainly adopts drainage thread and T binding clip to form part flow arrangement to carry out operation, and therefore, the method working procedure is comparatively simple.
2, the part flow arrangement structure that adopts of the present invention simple, install (dismounting) convenient, effectively can realize shunting, overheated drainage plate temperature is reduced gradually and after reaching the acceptable scope of human body, the on-load process of overheating defect can be realized.
3, the present invention is not only applicable to 110 kilovolts and above on-load transmission line, and to be also applicable in transformer station the process that 110 kilovolts and above on-load bus and downlead connecting clamp are overheated, therefore, the method is applied widely, has stronger real dissemination.
Accompanying drawing illustrates:
Fig. 1 is part flow arrangement mechanical schematic of the present invention.
Fig. 2 is the partial schematic diagram of equipotential process overheating defect of the present invention.
Number in the figure: 1 is T binding clip, 2 drainage threads, 3 insulators, 4 wire jumpers, 5 wires, 6 drainage plates, and in figure, K represents drainage plate open mode.
Below by way of embodiment, and the invention will be further described by reference to the accompanying drawings.
Embodiment:
Embodiment: when the present embodiment is to occur that strain rod tower drainage plate is overheated when transmission line load carrying, and the process in time that can not have a power failure, to a certain degree will burn drainage plate and set bolt when temperature is elevated to, cause the serious accident of circuit forced outage.This situation can not directly open drainage plate process again, and drainage plate temperature is too high simultaneously, now just by means of T binding clip 1, the drainage thread 2 meeting current-carrying requirement, can carry out on-load overhaul plan strain insulator wire jumper drainage plate overheating defect.
See Fig. 1, Fig. 2, concrete operational method is carried out as follows:
Whether a, to detect Awaiting Overhaul strain rod tower drainage plate 6 by infrared measurement of temperature overheated, if then enter next step, drainage plate 6 is in insulator 3 downstream;
B, select the T binding clip 1 of corresponding model and the drainage thread 2 of corresponding model according to the model of Awaiting Overhaul drainage plate wire, described drainage thread need meet the requirement of ampacity, and namely the diameter of drainage thread is not less than the diameter of wire of Awaiting Overhaul drainage plate wire jumper;
C, by surface personnel the two ends of described drainage thread to be connected respectively on two described T binding clips and to form part flow arrangement;
After d, live line working personnel equipotential, part flow arrangement is passed to equipotential personnel with insulating cord by surface personnel, two of drainage thread two ends T binding clips are connected with the wire 5 in Awaiting Overhaul drainage plate downstream and drainage plate wire jumper 4 by equipotential personnel respectively, form split channel; Now most of electric current is through split channel, and it is less that overheated drainage plate flows through electric current, and temperature can reduce gradually;
E, after overheated drainage plate temperature drops to human body tolerance interval, equipotential personnel drainage plate is opened rear according to produce concrete reason process, after being disposed, retighten connection;
F, dismounting part flow arrangement, live line working personnel depart from equipotential;
G, the operation of on-load overhaul plan strain insulator wire jumper drainage plate overheating defect complete.
Claims (2)
1. on-load overhaul plan strain insulator wire jumper drainage plate overheating defect method, is characterized in that operating as follows:
A, whether overheated, if then enter next step if detecting Awaiting Overhaul strain rod tower drainage plate by infrared measurement of temperature;
B, select the T binding clip of corresponding model and the drainage thread of corresponding model according to the model of Awaiting Overhaul drainage plate wire, described drainage thread need meet the requirement of ampacity, and namely the diameter of drainage thread is not less than the diameter of wire of Awaiting Overhaul drainage plate wire jumper;
C, by surface personnel the two ends of described drainage thread to be connected respectively on two described T binding clips and to form part flow arrangement;
After d, live line working personnel equipotential, two of drainage thread two ends T binding clips are connected with the wire in Awaiting Overhaul drainage plate downstream and drainage plate wire jumper respectively, form split channel;
E, after overheated drainage plate temperature drops to human body tolerance interval, drainage plate is opened rear according to produce concrete reason process, after being disposed, retighten connection;
F, dismounting part flow arrangement, live line working personnel depart from equipotential;
G, the operation of on-load overhaul plan strain insulator wire jumper drainage plate overheating defect complete.
2. on-load overhaul plan strain insulator wire jumper drainage plate overheating defect method according to claim 1, it is characterized in that, the wire type of Awaiting Overhaul drainage plate wire jumper is LGJ-240, LGJ-300, LGJ-400, and the diameter of described drainage thread selects the diameter of wire being not less than overheated drainage plate wire jumper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510236726.XA CN104836154A (en) | 2015-05-11 | 2015-05-11 | Method for repairing overheating defect of tension jumper drainage plate in on-load state |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510236726.XA CN104836154A (en) | 2015-05-11 | 2015-05-11 | Method for repairing overheating defect of tension jumper drainage plate in on-load state |
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| CN104836154A true CN104836154A (en) | 2015-08-12 |
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| CN201510236726.XA Pending CN104836154A (en) | 2015-05-11 | 2015-05-11 | Method for repairing overheating defect of tension jumper drainage plate in on-load state |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106486920A (en) * | 2015-09-02 | 2017-03-08 | 中国电力科学研究院 | Extra high voltage line wire jumper drainage plate loose contact electrical treatment device and processing method |
| CN107257104A (en) * | 2017-06-22 | 2017-10-17 | 国网河南省电力公司驻马店供电公司 | Transmission line of electricity conductor joint heating electrical treatment device |
| CN109346979A (en) * | 2018-10-23 | 2019-02-15 | 国网四川省电力公司南充供电公司 | A kind of on-load replacement insulation puncture line clamping is the method for special-shaped simultaneously hook wire clamp |
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| CN201312097Y (en) * | 2008-11-03 | 2009-09-16 | 湖南景明电力器材有限责任公司 | Two-plate type strain clamp |
| CN102064502A (en) * | 2010-11-18 | 2011-05-18 | 河南省电力公司南阳供电公司 | Method for preventing wire joint from getting hot |
| CN102201650A (en) * | 2011-04-22 | 2011-09-28 | 福建省电力有限公司福州电业局 | Electrification on and off lead wire crimping working method and shunting clamp |
| CN203645250U (en) * | 2014-01-13 | 2014-06-11 | 国家电网公司 | Wire current-guiding plate heat emission current-splitting processing device |
| CN104577869A (en) * | 2014-12-03 | 2015-04-29 | 国家电网公司 | Method and tool for treating heating of drainage plate |
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2015
- 2015-05-11 CN CN201510236726.XA patent/CN104836154A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201312097Y (en) * | 2008-11-03 | 2009-09-16 | 湖南景明电力器材有限责任公司 | Two-plate type strain clamp |
| CN102064502A (en) * | 2010-11-18 | 2011-05-18 | 河南省电力公司南阳供电公司 | Method for preventing wire joint from getting hot |
| CN102201650A (en) * | 2011-04-22 | 2011-09-28 | 福建省电力有限公司福州电业局 | Electrification on and off lead wire crimping working method and shunting clamp |
| CN203645250U (en) * | 2014-01-13 | 2014-06-11 | 国家电网公司 | Wire current-guiding plate heat emission current-splitting processing device |
| CN104577869A (en) * | 2014-12-03 | 2015-04-29 | 国家电网公司 | Method and tool for treating heating of drainage plate |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106486920A (en) * | 2015-09-02 | 2017-03-08 | 中国电力科学研究院 | Extra high voltage line wire jumper drainage plate loose contact electrical treatment device and processing method |
| CN107257104A (en) * | 2017-06-22 | 2017-10-17 | 国网河南省电力公司驻马店供电公司 | Transmission line of electricity conductor joint heating electrical treatment device |
| CN109346979A (en) * | 2018-10-23 | 2019-02-15 | 国网四川省电力公司南充供电公司 | A kind of on-load replacement insulation puncture line clamping is the method for special-shaped simultaneously hook wire clamp |
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Application publication date: 20150812 |