CN108092167B - Special tool for testing oil-gas casing pipe transformer - Google Patents
Special tool for testing oil-gas casing pipe transformer Download PDFInfo
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- CN108092167B CN108092167B CN201711270456.XA CN201711270456A CN108092167B CN 108092167 B CN108092167 B CN 108092167B CN 201711270456 A CN201711270456 A CN 201711270456A CN 108092167 B CN108092167 B CN 108092167B
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- conductive
- output end
- test
- electrically connected
- junction box
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Testing Relating To Insulation (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention relates to a special test tool for an oil-gas casing transformer, which comprises a test lead and is characterized in that: the test device is characterized by further comprising a junction box, wherein the input end of the junction box is electrically connected with the test lead in a plug-in mode, and the output end of the junction box is electrically connected with a test instrument. When in use: opening a GIS inspection hole metal cover plate, respectively connecting the conductive clamp of the test lead with the conductive contacts of each phase of the transformer through a GIS observation hole, covering the shielding cover of the test lead on the conductive clamp, leading out the test lead, inserting the second wiring terminal into the first wiring terminal, connecting a voltage output end and a current output end to a pressurizing contact by using a wire, connecting the pressurizing contact and a test instrument, checking the test lead, and switching on a power supply to perform a pressurizing test. The device has the advantages of time and labor saving, safety, high efficiency, light weight of the whole set of test device, convenient carrying, safety and reliability.
Description
Technical Field
The invention relates to a maintenance tool for electric power facilities, in particular to a special tool for testing an oil-gas casing transformer, which is used for replacing a composite insulator of a 66kV strain tower.
Background
With the continuous innovation of power equipment, GIS (sulfur hexafluoride-sealed type combined electrical apparatus) is widely used in power systems. Compared with a conventional open-type transformer substation, the GIS has many advantages, such as small occupied area, high reliability, convenient maintenance and the like. The closed type connection mode of the GIS and the transformer determines that the maintenance personnel need to pass through the following steps when performing a pressurization test on the transformer:
charging and discharging insulating gas; />
Disassembling and assembling a GIS shell; />
Carrying out a whole test on the transformer; />
Disassembling the conducting rod and the observation hole cover plate; />
And (5) testing loop resistance. Wherein the step->
And (4) removing the GIS metal shell to expose the conductive contact at the upper end of the transformer oil-gas sleeve so as to perform a pressurization test on the transformer. The GIS metal shell is dismantled, and due to the lack of effective special tools, the dismantling process is time-consuming, labor-consuming and low in efficiency, equipment is easy to damage, and a plurality of potential safety hazards are brought to personnel on a working site; after the test is completed and the metal shell and the conducting rod are restored, the loop resistance test of the whole loop is required to check whether each electric shock contact is good or not.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the shortcoming of the prior art is overcome, a light, safe, easy operation's experimental specialized tool of oil gas sleeve pipe transformer is provided, can utilize GIS metal casing's observation hole to connect the transformer conductive contact with experimental lead wire to avoid dismouting GIS metal casing's complicated process, also can avoid the return circuit resistance test process behind the recovery plant simultaneously, reduce and do the step of compression test to the transformer, shorten the repair time, improve work efficiency, prevent to damage equipment, improve and overhaul the reliability.
The technical scheme for solving the technical problem is as follows: the utility model provides an experimental specialized tool of oil gas sleeve pipe transformer, it includes experimental lead wire, characterized by: the test device is characterized by further comprising a junction box, wherein the input end of the junction box is electrically connected with the test lead in a plug-in mode, and the output end of the junction box is electrically connected with a test instrument.
The structure of the junction box is as follows: it includes case, wiring panel and first binding post, set up the wiring panel in the case, four first binding post arrange in the case as the input of junction box, the below of wiring panel and link firmly, first binding post is connected with the voltage output end and the current output end electricity of wiring panel respectively.
The structure of the wiring panel is as follows: it includes base plate, voltage output end, current output end and pressurized contact, the base plate is the flat board of epoxy preparation, four voltage output end and four current output end equally divide and do not wear the dress in the base plate and link firmly, voltage output end or current output end's last wiring end stretch out the base plate top, lower wiring end stretches out the base plate below, pressurized contact is arranged in on the base plate and links firmly as the output of junction box.
The voltage output end and the current output end are both knob type wiring ends, and the voltage output end and the current output end are distinguished by obvious color difference.
The box is made of composite insulating materials.
The first connecting terminal is structurally characterized in that: the novel conductive ring comprises a conductive core, a conductive ring and an insulator, wherein the conductive core is arranged at one end of the conductive ring, one end of the conductive core extends into the conductive ring, the other end of the conductive core extends out of the conductive ring, the insulator is arranged between the conductive core and the conductive ring to enable the conductive core and the conductive ring to be insulated, the conductive core is electrically connected with a lower wire connecting end of a voltage output end, and the conductive ring is electrically connected with a lower wire connecting end of a current output end.
The test lead has the structure that: it includes connecting cable, second binding post, conductive clip and shield cover, connecting cable's one end with second binding post electricity is connected, the other end and two conductive clip electricity respectively connect, the shield cover cup joints on connecting cable and the conductive clip of connecting and with connecting cable sliding contact.
The second connecting terminal is structurally characterized in that: the terminal comprises a terminal core, an insulating layer and a conductive ring, wherein the terminal core is arranged in the insulating layer in a penetrating way, the inserting end extends out of the insulating layer and is fixedly connected with the insulating layer, and the conductive ring is sleeved on the insulating layer and is fixedly connected with the insulating layer; the second wiring terminal is inserted in the first wiring terminal, the terminal core insertion end of the second wiring terminal is electrically connected with the conductive core of the first wiring terminal of the junction box, the other end of the second wiring terminal is electrically connected with the cable core of the connecting cable to form a voltage channel, and the conductive ring of the second wiring terminal is electrically connected with the conductive ring of the first wiring terminal of the junction box and electrically connected with the shielding layer of the connecting cable to form a current channel.
The connecting cable is an anti-interference direct-current high-voltage cable.
The clamping opening of each conductive clamp is in a zigzag shape, the clamping handle is provided with an insulating sleeve, the two conductive clamps connected on the same connecting cable are distinguished by the insulating sleeves arranged on the clamping handles in an obvious color difference.
The use method of the special tool for the oil-gas casing pipe transformer test comprises the following steps: opening a GIS inspection hole metal cover plate, respectively connecting the conductive clamp of the test lead with the conductive contacts of each phase of the transformer through a GIS observation hole, covering the shielding cover of the test lead on the conductive clamp, leading out the test lead, inserting the second wiring terminal into the first wiring terminal, connecting a voltage output end and a current output end to a pressurizing contact by using a wire, connecting the pressurizing contact and a test instrument, checking the test lead, and switching on a power supply to perform a pressurizing test.
According to the special tool for testing the oil-gas casing transformer, a GIS shell does not need to be removed during testing, large-scale mechanical auxiliary operation is not needed, the testing is finished, equipment is recovered or loop resistance testing is not needed, time and labor are saved, safety and high efficiency are achieved, the whole set of testing device is light in weight and convenient to carry, and all indexes meet the requirements of regulations; the connection box is reliably contacted with the test lead, and the first connection terminal and the second connection terminal adopt a composite terminal structure, so that the engagement is good, the reliability is high, and the access requirement of voltage and current signal double channels can be met; the surface of the box is provided with the insulating film, so that the box is good in corrosion resistance, light in material, convenient to carry and simple in process; the knob type wiring end is used as a voltage output end and a current output end, and can meet various wiring modes; the connecting cable adopts an anti-interference direct-current high-voltage cable, and double-channel transmission of voltage and current signals can be formed; the conductive clip volume is small, and the operation is flexible; the device has the advantages of time and labor saving, safety, high efficiency, light weight of the whole set of test device, convenient carrying, safety and reliability.
Drawings
FIG. 1 is a schematic structural diagram of a special tool for testing an oil-gas casing transformer of the invention;
FIG. 2 is a schematic front view of a junction box of the special tool for testing the oil-gas casing transformer of the invention;
FIG. 3 is a top schematic view of the open box of FIG. 2;
FIG. 4 is a schematic sectional view of a connection box of the special tool for testing the oil-gas casing transformer in a front view;
fig. 5 is a top view of the patch panel of fig. 4 with the patch panel removed;
FIG. 6 is a schematic cross-sectional left view of FIG. 4;
FIG. 7 is a schematic structural diagram of a test lead of the special tool for testing the oil-gas casing transformer of the invention;
fig. 8 is a schematic sectional view B-B of fig. 7.
In the figure: 1. junction box, 2 wiring panels, 3 voltage output ends, 4 boxes, 5 current output ends, 6 first connecting terminals, 7 second connecting terminals, 8 test leads, 9 connecting cables, 10 shielding cases, 11 pressurizing contacts and 12 conductive clamps.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the drawings.
Referring to fig. 1 to 8, in embodiment 1, the special tool for testing the oil-gas casing transformer in this embodiment includes a test lead 8, and further includes a junction box 1, an input end of the junction box 1 is electrically connected to the test lead 8 in a plug-in manner, and an output end of the junction box 1 is electrically connected to a test instrument.
The structure of the junction box 1 is as follows: it includes case 4, wiring panel 2 and first binding post 6, case 4 adopts compound insulating material preparation, sets up wiring panel 2 in the case 4, four first binding post 6 as the input of junction box 1 arrange in case 4, wiring panel 2's below and link firmly, first binding post 6 is connected with the voltage output end 3 and the 5 electricity of current output end electricity of wiring panel 2 respectively.
The structure of the wiring panel 2 is as follows: it includes base plate, voltage output 3, current output 5 and pressure contact 11, the base plate is the flat board of epoxy preparation, four voltage output 3 and four current output 5 equally divide and do not wear the dress in the base plate and link firmly, voltage output 3 or current output 5's last wiring end stretch out the base plate top, the lower wiring end stretches out the base plate below, pressure contact 11 places in the base plate as junction box 1's output and links firmly.
The voltage output end 3 and the current output end 5 are both knob type wiring ends, and the voltage output end 3 and the current output end 5 are distinguished by obvious red and black respectively.
The first connection terminal 6 has the structure that: the novel conductive ring comprises a conductive core, a conductive ring and an insulator, wherein the conductive core is arranged at one end of the conductive ring, one end of the conductive core extends into the conductive ring, the other end of the conductive core extends out of the conductive ring, the insulator is arranged between the conductive core and the conductive ring to enable the conductive core and the conductive ring to be insulated, the conductive core is electrically connected with a lower wire connecting end of a voltage output end 3, and the conductive ring is electrically connected with a lower wire connecting end of a current output end 5.
The test lead 8 has the following structure: it includes connecting cable 9, second binding post 7, conductive clip 12 and shield cover 10, connecting cable 9 is anti-interference direct current high voltage cable, connecting cable 9 one end with second binding post 7 electricity is connected, the other end and two conductive clip 12 electricity respectively connect, the mouth that presss from both sides of conductive clip 12 is the zigzag, the clamp holder sets up insulating sheath, two conductive clip 12 of connecting on same connecting cable 9, the insulating sheath that its clamp holder set up distinguishes with obvious red and black, shield cover 10 cup joints on connecting cable 9 and the conductive clip 12 of connecting and with connecting cable 9 sliding contact.
The second connection terminal 7 has the structure that: the terminal comprises a terminal core, an insulating layer and a conductive ring, wherein the terminal core is arranged in the insulating layer in a penetrating way, the inserting end extends out of the insulating layer and is fixedly connected with the insulating layer, and the conductive ring is sleeved on the insulating layer and is fixedly connected with the insulating layer; the second wiring terminal 7 is inserted in the first wiring terminal 6, the terminal core insertion end of the second wiring terminal 7 is electrically connected with the conductive core of the first wiring terminal 6 of the junction box 1, the other end of the second wiring terminal is electrically connected with the cable core of the connecting cable 9 to form a voltage channel, and the conductive ring of the second wiring terminal 7 is electrically connected with the conductive ring of the first wiring terminal 6 of the junction box 1 and electrically connected with the shielding layer of the connecting cable 9 to form a current channel.
The present embodiment is manufactured using prior art techniques.
The using method of the embodiment is as follows: opening a GIS inspection hole metal cover plate, respectively connecting a conductive clamp 12 of a test lead 8 with conductive contacts of each phase of a transformer through a GIS observation hole, covering a shielding cover 10 of the test lead 8 on the conductive clamp 12, leading out the test lead 8, inserting a second wiring terminal 7 into a first wiring terminal 6, connecting a voltage output end 3, a current output end 5 to a pressurizing contact 11 by using a wire, connecting the pressurizing contact 11 with a test instrument, checking without errors, and switching on a power supply to carry out a pressurizing test.
After the embodiment is put into use, each detection test can save the working time by 8 hours, and the loss can be reduced by 28.48 ten thousand yuan according to the technology that one 40000kVA transformer with the 66kV grade transmits the average electricity price of the power by 0.89 yuan/degree. Meanwhile, the problems of poor fit, repeated adjustment and the like which are possibly caused by the disassembly and assembly of the GIS shell outside the oil-gas casing can be reduced.
Claims (7)
1. The utility model provides an experimental specialized tool of oil gas sleeve pipe transformer, it includes experimental lead wire, characterized by: the test device also comprises a junction box, wherein the input end of the junction box is electrically connected with the test lead in a plug-in manner, and the output end of the junction box is electrically connected with the test instrument;
the structure of the junction box is as follows: the four first connecting terminals are used as input ends of the connecting box and are arranged in the box and below the connecting panel and fixedly connected, and the first connecting terminals are respectively and electrically connected with a voltage output end and a current output end of the connecting panel;
the structure of the wiring panel is as follows: the circuit comprises a substrate, voltage output ends, current output ends and pressurizing contacts, wherein the substrate is a flat plate made of epoxy resin, the four voltage output ends and the four current output ends are respectively arranged in the substrate in a penetrating way and are fixedly connected, an upper wiring end of each voltage output end or each current output end extends out of the upper part of the substrate, a lower wiring end of each voltage output end or each current output end extends out of the lower part of the substrate, and the pressurizing contacts serving as output ends of a junction box are arranged on the substrate and are fixedly connected;
the box is made of composite insulating materials.
2. The special tool for the oil-gas casing transformer test of claim 1, which is characterized in that: the voltage output end and the current output end are both knob type wiring ends, and the voltage output end and the current output end are distinguished by obvious color difference.
3. The special tool for the oil-gas casing transformer test of claim 1, which is characterized in that: the first connecting terminal is structurally characterized in that: the conductive core is arranged at one end of the conductive ring, one end of the conductive core extends into the conductive ring, the other end of the conductive core extends out of the conductive ring, the insulator is arranged between the conductive core and the conductive ring to insulate the conductive core from the conductive ring, the conductive core is electrically connected with a lower connecting end of a voltage output end, and the conductive ring is electrically connected with a lower connecting end of a current output end.
4. The special tool for the oil-gas casing transformer test of claim 1, which is characterized in that: the test lead has the structure that: it includes connecting cable, second binding post, conductive clip and shield cover, connecting cable's one end with second binding post electricity is connected, the other end and two conductive clip electricity respectively connect, the shield cover cup joints on connecting cable and the conductive clip of connecting and with connecting cable sliding contact.
5. The special tool for the oil-gas casing transformer test as claimed in claim 4, wherein: the second connecting terminal is structurally characterized in that: the terminal comprises a terminal core, an insulating layer and a conductive ring, wherein the terminal core is arranged in the insulating layer in a penetrating way, the inserting end extends out of the insulating layer and is fixedly connected with the insulating layer, and the conductive ring is sleeved on the insulating layer and is fixedly connected with the insulating layer; the second wiring terminal is inserted in the first wiring terminal, the terminal core insertion end of the second wiring terminal is electrically connected with the conductive core of the first wiring terminal of the junction box, the other end of the second wiring terminal is electrically connected with the cable core of the connecting cable to form a voltage channel, and the conductive ring of the second wiring terminal is electrically connected with the conductive ring of the first wiring terminal of the junction box and electrically connected with the shielding layer of the connecting cable to form a current channel.
6. The special tool for the oil and gas casing transformer test as claimed in claim 4, wherein: the connecting cable is an anti-interference direct-current high-voltage cable.
7. The special tool for the oil-gas casing transformer test as claimed in claim 4, wherein: the clamping opening of each conductive clamp is in a zigzag shape, the clamping handle is provided with an insulating sleeve, the two conductive clamps connected on the same connecting cable are distinguished by the insulating sleeves arranged on the clamping handles in an obvious color difference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711270456.XA CN108092167B (en) | 2017-12-05 | 2017-12-05 | Special tool for testing oil-gas casing pipe transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711270456.XA CN108092167B (en) | 2017-12-05 | 2017-12-05 | Special tool for testing oil-gas casing pipe transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108092167A CN108092167A (en) | 2018-05-29 |
| CN108092167B true CN108092167B (en) | 2023-04-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711270456.XA Active CN108092167B (en) | 2017-12-05 | 2017-12-05 | Special tool for testing oil-gas casing pipe transformer |
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| CN (1) | CN108092167B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006164914A (en) * | 2004-12-10 | 2006-06-22 | Kansai Electric Power Co Inc:The | Connection apparatus |
| CN2906962Y (en) * | 2006-05-29 | 2007-05-30 | 包建平 | Double grip cover double line automobile charging cable |
| CN202817558U (en) * | 2012-09-19 | 2013-03-20 | 吉林省电力有限公司吉林供电公司 | Auxiliary test tool for oil and gas bushing transformer |
| CN105119113A (en) * | 2015-09-30 | 2015-12-02 | 西安艾力特电子实业有限公司 | Novel radio-frequency coaxial connector |
| CN207572820U (en) * | 2017-12-05 | 2018-07-03 | 国家电网公司 | Oil-gas casing transformer test specific purpose tool |
-
2017
- 2017-12-05 CN CN201711270456.XA patent/CN108092167B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006164914A (en) * | 2004-12-10 | 2006-06-22 | Kansai Electric Power Co Inc:The | Connection apparatus |
| CN2906962Y (en) * | 2006-05-29 | 2007-05-30 | 包建平 | Double grip cover double line automobile charging cable |
| CN202817558U (en) * | 2012-09-19 | 2013-03-20 | 吉林省电力有限公司吉林供电公司 | Auxiliary test tool for oil and gas bushing transformer |
| CN105119113A (en) * | 2015-09-30 | 2015-12-02 | 西安艾力特电子实业有限公司 | Novel radio-frequency coaxial connector |
| CN207572820U (en) * | 2017-12-05 | 2018-07-03 | 国家电网公司 | Oil-gas casing transformer test specific purpose tool |
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| Publication number | Publication date |
|---|---|
| CN108092167A (en) | 2018-05-29 |
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