CN103532047A - Operating method and device for replacing 10kV pole-mounted drop-out fuse - Google Patents
Operating method and device for replacing 10kV pole-mounted drop-out fuse Download PDFInfo
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- CN103532047A CN103532047A CN201310485847.9A CN201310485847A CN103532047A CN 103532047 A CN103532047 A CN 103532047A CN 201310485847 A CN201310485847 A CN 201310485847A CN 103532047 A CN103532047 A CN 103532047A
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Abstract
The invention relates to the technical field of 10kV distribution network load operation, in particular to an operating method and device for replacing a 10kV pole-mounted drop-out fuse. A self-extinguishing bypass drop-out fuse is taken as temporary bypass equipment for shunting a drop-out fuse to be replaced in order to fulfill the aim of converting charge, so that the drop-out fuse to be replaced is replaced after exiting from operation. Compared with the prior art, the method has the beneficial effects that (1) the self-extinguishing drop-out fuse is taken as shunting equipment, so that the technical condition for charged replacement of the drop-out fuse is satisfied, and the operation difficulty is lowered; (2) stable connection of the shunting equipment and an electric pole is completed by adopting an insulating lifting bracket, so that enough safety distance can be provided for operating personnel, and the problems of small equipment interval and incapability of mounting the shunting equipment are solved; (3) the method is consistent with the technical characteristics of the national charged operation in China, charged replacement of the drop-out fuse is realized, and economic losses of downstream power utilization enterprises and residents caused by power cut are avoided.
Description
Technical field
The present invention relates to 10kV distribution hot line maintenance technical field, relate in particular to operational method and the device of fuse switch on a kind of 10kV of replacing post.
Background technology
At present, the live line working of power distribution network is the main direction of studying of power distribution network operation technique, and hot line maintenance is the Main Means that solves power distribution network uninterrupted operation.At on-load, change in the operational method of 10kV fuse switch, routine is to utilize insulation lead wire to carry out operating in short-circuit and shunt to change fuse, because fuse switch has the characteristic of cutting off electric current, on-load is changed the cut-out current capacity that fuse switch must be considered shunting device, directly with insulation lead wire, shunt operation and have potential safety hazard, for example: fuse switch to be replaced is in incision state and when in addition two-phase fuse switch is in co-bit (this situation is maximum), if connecing lead-in wire with insulation lead wire on-load can draw position and produce arc light connecing, when arc light is excessive, can operating personnel be caused and be burnt, so forbid that on-load connects lead-in wire in live line working at present, that is to say when fuse switch to be replaced is when cutting state, to utilize insulation lead wire to equipment short circuit, carry out on-load replacing.
This operational method of while is inapplicable various application occasions also, as the replacing operation of the fuse switch of common double pole transformer platform, insulating transformer platform and diverging tracks, ubiquity operating personnel safe distance is not enough, equipment gap is little, shunting device such as cannot install at the technological difficulties, is unfavorable for promoting the use of of this operational method.
Summary of the invention
The operational method and the device that the object of this invention is to provide fuse switch on a kind of 10kV of replacing post, using self arc formula bypass fuse switch as main throwing labour equipment, adopts side to connect switch and carry out triage operator, reduces hot line maintenance difficulty.
To achieve these goals, the present invention is by the following technical solutions:
A kind of operational method of changing 10kV fuse switch, the self arc formula bypass fuse switch of usining is shunted to reach to fuse switch to be replaced as inicdental bypath equipment and is turned charged object, after making fuse switch to be replaced out of service, change, its concrete operation step is as follows:
1) operating personnel by aerial lift device with insulated arm electric pole outside to the wire in job area and bar on gold utensil insulate and cover, during operation according to by near to far, from the bottom to top, the order of earth electrode sets gradually insulation masking material after ecto-entad, first electrified body, but the contact place of fuse switch to be replaced does not do insulation, do not cover;
2) after insulation is covered and has been arranged, operating personnel is being no less than on 0.6m distance electric pole insulated lift support is being set below switch cross-arm, make insulated lift support and fuse switch to be replaced lay respectively at the both sides of electric pole, then self arc fuse switch is installed on insulated lift support;
3) make self arc fuse switch in separated position, with two eradication edge drainage hanging wires, be connected with the wire at fuse switch to be replaced two ends self arc fuse switch two ends lead-in wires is corresponding separately, the self arc fuse switch that closes, completes the shunting to fuse switch to be replaced;
4) respectively self arc fuse switch and insulation drainage hanging wire are tested to stream, after confirming that shunting is normal, pull open fuse switch to be replaced, measure is covered in the insulation of removing fuse switch place to be replaced, the fuse switch more renewing;
5) operating personnel's new fuse switch that closes, and the two ends contact of new fuse switch is tested to stream, confirm through-flow normal;
6) pull open self arc fuse switch, remove insulation drainage hanging wire and the self arc fuse switch at self arc fuse switch two ends;
7) remove insulation and cover, according to from far near, from top to bottom, from inside to outside, first ground connection after this order of electrified body carry out successively;
8) operating personnel returns to ground, the end of job.
The insulation drainage hanging wire adopting in described method, comprises that the copper cash of having insulation sheath, one end of copper cash are provided with the wire connecting ends being comprised of locking insulated handle and wire hook, and the other end of copper cash is provided with by contact and links up with and screw the equipment connection end that handle forms.
The insulated lift support adopting in described method, comprise that insulating bar, metal are holder, the soft band of tension and metal stabilizing bracket, metal stabilizing bracket is located at metal the top of holder, metal is connected one end of holder with the soft band of tension, metal is provided with the other end of holder to tighten up handle, and described insulating bar is open column shape, in insulating bar, be provided with elevating lever, on elevating lever, be provided with along its length adjustment hole, the bottom of elevating lever is provided with switch installing hole, between elevating lever and insulating bar, by pin, is connected.
The distribution length of described adjustment hole is 600～800mm.
Compared with prior art, the invention has the beneficial effects as follows:
1) adopt self arc formula fuse switch as throwing labour shunting device, meet the technical conditions that on-load is changed fuse switch, significantly reduced task difficulty, there is application value;
2) adopt insulated lift support to complete firm connection the between shunting device and electric pole, can provide enough safe distances for operating personnel, solved equipment gap little, the difficult problem that shunting device cannot be installed, makes this operational method applicable to multiple Different field equipment situation;
3) meet the technical characterstic of China's live line working, realized on-load and changed fuse switch, avoid having a power failure downstream electricity consumption enterprise and resident are caused to economic loss.
Accompanying drawing explanation
Fig. 1 is insulated lift support example structure schematic diagram of the present invention;
Fig. 2 is the present invention's drainage hanging wire example structure schematic diagram that insulate;
Fig. 3 is operating principle figure of the present invention;
Fig. 4 is work flow schematic block diagram of the present invention.
In figure: 1-insulating bar 2-metal tightens up handle 6-elevating lever 7-adjustment hole 8-switch installing hole 9-pin 10-copper cash 11-locking insulated handle 12-wire hook 13-contact hook 14-the soft band of holder 3-tension 4-metal stabilizing bracket 5-and screws handle
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further:
See Fig. 1, it is insulated lift support example structure schematic diagram of the present invention, comprise insulating bar 1, metal is holder 2, tension is soft is with 3 and metal stabilizing bracket 4, metal stabilizing bracket 4 is located at metal the top of holder 2, metal is with 3 to be connected with tension is soft one end of holder 2, metal is provided with the other end of holder 2 to tighten up handle 5, insulating bar 1 is open column shape, in insulating bar 1, be provided with elevating lever 6, on elevating lever 6, be provided with along its length adjustment hole 7, the bottom of elevating lever 6 is provided with switch installing hole 8, between elevating lever 6 and insulating bar 1, by pin 9, be connected, can adjust elevating lever 6 length by pin.The distribution length of adjustment hole 7 is 600～800mm, can guarantee the minimum safe distance of 0.6m between self arc formula fuse switch and switch cross-arm.
See Fig. 2, it is the present invention's drainage hanging wire example structure schematic diagram that insulate, the copper cash 10 that comprises having insulation sheath, one end of copper cash is provided with the wire connecting ends being comprised of locking insulated handle 11 and wire hook 12, and the other end of copper cash is provided with by contact hook 13 and screws the equipment connection end that handle 14 forms.Wire hook 12 is for being connected with the wire at fuse switch to be replaced two ends, and locking insulated handle 11 is for guaranteeing to connect reliably, and contact hook 13 is for being connected with shunting device contact, and screwing handle 14 can operate with insulating bar, assembling safe ready.Equipment connection end can be connected with fuse switch before operation, also can in operation, be connected with fuse switch terminal.
While considering breaking and connecting lead-in wire, equipment room is apart from little, operating personnel is not enough with the safe distance between adjacent phase electrified body, and adopt and the factor such as technique is numerous and diverse when hook wire clamp connects, therefore, the structure of this equipment connection end can effectively shorten operation duration, and the outer field good insulation properties of copper cash 10 also can have been evaded some security risks simultaneously, reduces personnel's operation intensity; Originally single-phase breaking and connecting lead-in wire mode needs more than 30 minutes, and only needs now the time of 3～5 minutes.
A kind of operational method of changing 10kV fuse switch of the present invention, to using self arc formula bypass fuse switch as inicdental bypath equipment, fuse switch to be replaced to be shunted to reach and turn charged object, after making fuse switch to be replaced out of service, change, self arc drop out fuse is due to good arc extinguishing ability, can guarantee the safety of operating personnel in operation process, be applicable to use in hot line maintenance, its concrete operation step is as follows:
1) operating personnel by aerial lift device with insulated arm electric pole outside to the wire in job area and bar on gold utensil insulate and cover, during operation according to by near to far, from the bottom to top, the order of earth electrode sets gradually insulation masking material after ecto-entad, first electrified body, action is carried out as far as possible gently, but the contact place of fuse switch to be replaced does not do insulation, does not cover;
2) after insulation is covered and has been arranged, operating personnel is being no less than on 0.6m distance electric pole insulated lift support is being set below switch cross-arm, make insulated lift support and fuse switch to be replaced lay respectively at the both sides of electric pole, then self arc fuse switch is installed on insulated lift support;
3) make self arc fuse switch in separated position, with two eradication edge drainage hanging wires, be connected with the wire at fuse switch to be replaced two ends self arc fuse switch two ends lead-in wires is corresponding separately, the self arc fuse switch that closes, completes the shunting to fuse switch to be replaced;
4) respectively self arc fuse switch and insulation drainage hanging wire are tested to stream, after confirming that shunting is normal, pull open fuse switch to be replaced, measure is covered in the insulation of removing fuse switch place to be replaced, the fuse switch more renewing;
5) operating personnel's new fuse switch that closes, and the two ends contact of new fuse switch is tested to stream, confirm through-flow normal;
6) pull open self arc fuse switch, remove insulation drainage hanging wire and the self arc fuse switch at self arc fuse switch two ends;
7) remove insulation and cover, according to from far near, from top to bottom, from inside to outside, first ground connection after this order of electrified body carry out successively, action is carried out as far as possible gently, must exempt to cause unnecessary security incident;
8) operating personnel returns to ground, the end of job.
Claims (4)
1. an operational method of changing 10kV fuse switch, it is characterized in that, the self arc formula bypass fuse switch of usining is shunted to reach to fuse switch to be replaced as inicdental bypath equipment and is turned charged object, after making fuse switch to be replaced out of service, change, its concrete operation step is as follows:
1) operating personnel by aerial lift device with insulated arm electric pole outside to the wire in job area and bar on gold utensil insulate and cover, during operation according to by near to far, from the bottom to top, the order of earth electrode sets gradually insulation masking material after ecto-entad, first electrified body, but the contact place of fuse switch to be replaced does not do insulation, do not cover;
2) after insulation is covered and has been arranged, operating personnel is being no less than on 0.6m distance electric pole insulated lift support is being set below switch cross-arm, make insulated lift support and fuse switch to be replaced lay respectively at the both sides of electric pole, then self arc fuse switch is installed on insulated lift support;
3) make self arc fuse switch in separated position, with two eradication edge drainage hanging wires, be connected with the wire at fuse switch to be replaced two ends self arc fuse switch two ends lead-in wires is corresponding separately, the self arc fuse switch that closes, completes the shunting to fuse switch to be replaced;
4) respectively self arc fuse switch and insulation drainage hanging wire are tested to stream, after confirming that shunting is normal, pull open fuse switch to be replaced, measure is covered in the insulation of removing fuse switch place to be replaced, the fuse switch more renewing;
5) operating personnel's new fuse switch that closes, and the two ends contact of new fuse switch is tested to stream, confirm through-flow normal;
6) pull open self arc fuse switch, remove insulation drainage hanging wire and the self arc fuse switch at self arc fuse switch two ends;
7) remove insulation and cover, according to from far near, from top to bottom, from inside to outside, first ground connection after this order of electrified body carry out successively;
8) operating personnel returns to ground, the end of job.
2. the insulation drainage hanging wire adopting in method described in claim 1, it is characterized in that, the copper cash that comprises having insulation sheath, one end of copper cash is provided with the wire connecting ends being comprised of locking insulated handle and wire hook, and the other end of copper cash is provided with by contact and links up with and screw the equipment connection end that handle forms.
3. the insulated lift support adopting in method described in claim 1, it is characterized in that, comprise that insulating bar, metal are holder, the soft band of tension and metal stabilizing bracket, metal stabilizing bracket is located at metal the top of holder, metal is connected one end of holder with the soft band of tension, metal is provided with the other end of holder to tighten up handle, described insulating bar is open column shape, in insulating bar, be provided with elevating lever, on elevating lever, be provided with along its length adjustment hole, the bottom of elevating lever is provided with switch installing hole, between elevating lever and insulating bar, by pin, is connected.
4. insulated lift support according to claim 3, is characterized in that, the distribution length of described adjustment hole is 600～800mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310485847.9A CN103532047B (en) | 2013-10-16 | 2013-10-16 | A kind of operational method and device changing fuse switch on 10kV post |
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| CN201310485847.9A CN103532047B (en) | 2013-10-16 | 2013-10-16 | A kind of operational method and device changing fuse switch on 10kV post |
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| CN103532047A true CN103532047A (en) | 2014-01-22 |
| CN103532047B CN103532047B (en) | 2016-01-20 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104104030A (en) * | 2014-07-30 | 2014-10-15 | 国家电网公司 | Hot-line work recovery method of ground wire of high-voltage cable shielding layer since stealing |
| CN106785942A (en) * | 2017-01-25 | 2017-05-31 | 国网山东省电力公司乳山市供电公司 | High-tension fuse operation protecting device and high-tension fuse protection against electric shock operational method |
| CN109192633A (en) * | 2018-11-12 | 2019-01-11 | 国网山西省电力公司临汾供电公司 | A kind of quick short-circuit tool for fuse switch |
| CN109390872A (en) * | 2018-11-05 | 2019-02-26 | 国网浙江省电力有限公司杭州供电公司 | It is a kind of to be turned based on the moving load for bypassing Live line maintenance method for system |
| CN111969465A (en) * | 2020-07-03 | 2020-11-20 | 国网浙江省电力有限公司湖州供电公司 | Load replacement drop-out fuse is with insulating baffle |
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| CN103001142A (en) * | 2012-09-03 | 2013-03-27 | 辽宁省电力有限公司鞍山供电公司 | Operation method for on-load replacing of 10kV pole-mounted disconnector |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104104030A (en) * | 2014-07-30 | 2014-10-15 | 国家电网公司 | Hot-line work recovery method of ground wire of high-voltage cable shielding layer since stealing |
| CN106785942A (en) * | 2017-01-25 | 2017-05-31 | 国网山东省电力公司乳山市供电公司 | High-tension fuse operation protecting device and high-tension fuse protection against electric shock operational method |
| CN109390872A (en) * | 2018-11-05 | 2019-02-26 | 国网浙江省电力有限公司杭州供电公司 | It is a kind of to be turned based on the moving load for bypassing Live line maintenance method for system |
| CN109192633A (en) * | 2018-11-12 | 2019-01-11 | 国网山西省电力公司临汾供电公司 | A kind of quick short-circuit tool for fuse switch |
| CN111969465A (en) * | 2020-07-03 | 2020-11-20 | 国网浙江省电力有限公司湖州供电公司 | Load replacement drop-out fuse is with insulating baffle |
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| CN103532047B (en) | 2016-01-20 |
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Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: Anshan Power Supply Company of State Grid Liaoning Electric Power Company Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee before: State Grid Corporation of China Patentee before: ANSHAN POWER SUPPLY COMPANY, LIAONING ELECTRIC POWER Co.,Ltd. |
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Effective date of registration: 20160823 Address after: 114002 Anshan South Road, Tiedong District, Liaoning, Shengli Road, No. 52 Patentee after: Anshan Power Supply Company of State Grid Liaoning Electric Power Company Patentee after: State Grid Corporation of China Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee before: State Grid Corporation of China Patentee before: Anshan Power Supply Company of State Grid Liaoning Electric Power Company |