CN107796964B - Current transformer experiment appurtenance - Google Patents
Current transformer experiment appurtenance Download PDFInfo
- Publication number
- CN107796964B CN107796964B CN201711224357.8A CN201711224357A CN107796964B CN 107796964 B CN107796964 B CN 107796964B CN 201711224357 A CN201711224357 A CN 201711224357A CN 107796964 B CN107796964 B CN 107796964B
- Authority
- CN
- China
- Prior art keywords
- clamping plate
- current transformer
- rod
- base
- clamping
- 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.)
- Active
Links
- 238000002474 experimental method Methods 0.000 title description 2
- 238000012360 testing method Methods 0.000 claims abstract description 23
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 230000003993 interaction Effects 0.000 claims abstract description 4
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 239000004020 conductor Substances 0.000 claims description 10
- 230000006698 induction Effects 0.000 claims description 3
- 238000007689 inspection Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- G01R1/0425—Test clips, e.g. for IC's
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/02—Testing or calibrating of apparatus covered by the other groups of this subclass of auxiliary devices, e.g. of instrument transformers according to prescribed transformation ratio, phase angle, or wattage rating
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention discloses a current transformer test auxiliary tool, which comprises an insulating rod, wherein the top end of the insulating rod is connected with a clamping mechanism, the clamping mechanism comprises a base connected with the top end of the insulating rod, a first clamping plate is integrally arranged on the base, a second clamping plate is hinged on the base, the first clamping plate and the second clamping plate are mutually clamped on an aluminum stranded wire in an interaction manner, the space between the first clamping plate and the second clamping plate is inner, a first straight rod is hinged at the bottom of the inner side surface of the first clamping plate, a through hole for penetrating the first straight rod is arranged on the second clamping plate, the first straight rod penetrates through the through hole and is in sliding connection with the second clamping plate, a butterfly nut is arranged on the first straight rod, the butterfly nut is positioned on the outer side of the second clamping plate, a first pressure spring is sleeved on the first straight rod between the butterfly nut and the outer side surface of the second clamping plate, a positioning screw is in threaded connection with the bottom of the first clamping plate, the tool is convenient to assemble and disassemble, convenient to carry and use, and greatly improves the test efficiency and the personnel safety.
Description
Technical Field
The invention belongs to the technical field of electric power, and particularly relates to a current transformer test auxiliary tool.
Background
Current Transformer (CT): the high current at the high-voltage side of the power system is converted into the low current at the low-voltage side according to the electromagnetic induction principle, and the low current is supplied to relay protection, an automatic device and a measuring instrument, so that the high-voltage equipment and the low-voltage equipment are isolated, and the low-voltage equipment can safely and accurately obtain the loop current at the high-voltage side; and (3) CT test: the method is used for verifying whether the transformation ratio, the polarity, the volt-ampere characteristic and the like of the current transformer conform to the parameters or the operation requirements of a factory nameplate, and whether the transformation ratio, the polarity, the volt-ampere characteristic and the like of the current transformer are correct or not is related to the correctness of the secondary circuit wiring, the accuracy of electric energy measurement and metering and the reliability of the action of a protection device, and has important significance for the safe, stable and economic operation of a power system.
At present, a 110-220 kV current transformer in an electric power system is mostly of a porcelain column type and is high in installation height, and the new installation inspection, the regular inspection and the supplementary inspection in operation of the current transformer are specified by the regulations such as GB50150-2016 electric equipment handover test regulation, and the content, the qualified standard and the attention items of the inspection items are clear. Need be connected test instrument rather than both sides aluminum stranded conductor when current transformer inspection is experimental, the personnel generally ascend a height through insulating ladder or arrive experimental wire clamping department with the help of liftable formula operation platform or bucket boom car at present, install the experimental fastener additional in current transformer both sides aluminum stranded conductor, and these two kinds of operation modes all have that the safety risk is big, operating time is long, and is inefficient, the big scheduling problem of intensity of labour.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provide a current transformer test auxiliary tool,
the technical scheme adopted by the XX x for achieving the purpose is as follows: a current transformer test auxiliary tool comprises an insulating rod, a clamping mechanism is connected to the top end of the insulating rod, the clamping mechanism comprises a base connected to the top end of the insulating rod, a first clamping plate is integrally arranged on the base, a second clamping plate is hinged to the base, the first clamping plate and the second clamping plate are clamped on an aluminum stranded wire in an interaction mode, a space between the first clamping plate and the second clamping plate is formed in the inner portion, a first straight rod is hinged to the bottom of the inner side face of the first clamping plate, a through hole used for penetrating the first straight rod is formed in the second clamping plate, the first straight rod penetrates through the through hole and is in sliding connection with the second clamping plate, a butterfly nut is arranged on the first straight rod, the butterfly nut is located on the outer side of the second clamping plate, a first pressure spring is sleeved on the first straight rod between the butterfly nut and the outer side face of the second clamping plate, and a positioning screw rod is connected to the bottom of the first clamping plate in, the inner end of the positioning screw is abutted against the inner side face of the second clamping plate, a wiring terminal used for connecting a test wire is arranged on the base, and the first clamping plate and the base are made of conductive materials.
Preferably, a pressure tongue is arranged on the inner side face of the first clamping plate, the top end of the pressure tongue is hinged with the inner side face of the first clamping plate, and a second pressure spring is arranged between the bottom end of the pressure tongue and the inner side face of the first clamping plate.
Preferably, an induction type live alarm is fixed on the outer side surface of the first clamping plate or the second clamping plate.
Preferably, abrasive paper for removing the surface oxide layer of the aluminum stranded wire is arranged on the inner side surface of the second clamping plate.
Preferably, the second clamping plate is provided with an upper mounting seam and a lower mounting seam, an upper connecting plate is integrally arranged on the outer side surface of the second clamping plate close to the upper mounting seam, a lower connecting plate is integrally arranged on the outer side surface of the second clamping plate close to the lower mounting seam, the upper end of the abrasive paper penetrates through the upper mounting seam and is clamped on the upper connecting plate through a clamp, and the lower end of the abrasive paper penetrates through the lower mounting seam and is clamped on the lower connecting plate through the clamp.
Preferably, the insulating rod is a multi-stage telescopic rod.
Preferably, a triangular support frame is mounted at the bottom end of the insulating rod.
Preferably, the base is in threaded connection with the insulating rod.
The invention has the following beneficial effects: personnel can stand on the ground to carry out CT test wire clamping work, thus avoiding climbing high-altitude work and mistakenly entering a live equipment area and reducing safety risk; the device has short time for clamping the aluminum stranded wire, and greatly improves the working efficiency; the length of insulating rod is adjustable, is applicable to all 220/110kV CT experimental site work.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1, an auxiliary tool for a current transformer test comprises an insulating rod 14, a triangular support frame 15 is installed at the bottom end of the insulating rod 14, a clamping mechanism is connected to the top end of the insulating rod 14, the clamping mechanism wraps a base 13 connected to the top end of the insulating rod 14, the base 13 is in threaded connection with the insulating rod 14, a first clamping plate 5 is integrally arranged on the base 13, a second clamping plate 8 is hinged to the base 13, the first clamping plate 5 and the second clamping plate 8 are clamped on an aluminum twisted wire in an interaction mode, a space between the first clamping plate 5 and the second clamping plate 8 is inner, a first straight rod 12 is hinged to the bottom of the inner side face of the first clamping plate 5, a through hole for penetrating the first straight rod 12 is formed in the second clamping plate 8, the first straight rod 12 penetrates through the through hole and is in sliding connection with the second clamping plate 8, a butterfly nut 10 is arranged on the first straight rod 12, the butterfly nut 10 is located on the outer side of the second clamping plate 8, and a butterfly nut 10 is arranged on the outer side face of the A first pressure spring 11 is sleeved on a first straight rod 12 between the two straight rods, a positioning screw rod 3 is in threaded connection with the bottom of a first clamping plate 5, the inner end of the positioning screw rod 3 abuts against the inner side face of a second clamping plate 8, a wiring terminal 2 used for being connected with a test wire 1 is arranged on a base 13 or the first clamping plate 5, and the first clamping plate 5 and the base 13 are made of conductive materials.
In order to further increase the clamping effect on the aluminum stranded wire and contact the aluminum stranded wire from the branch, a pressure tongue 9 is arranged on the inner side surface of the first clamping plate 5, the top end of the pressure tongue 9 is hinged with the inner side surface of the first clamping plate 5, and a second pressure spring 4 is arranged between the bottom end of the pressure tongue 9 and the inner side surface of the first clamping plate 5.
In order to prevent the damage caused by the entering of the misoperation into the charged area, an induction type charged alarm 6 is fixed on the outer side surface of the first clamping plate 5 or the second clamping plate 8.
And abrasive paper 7 for removing an oxide layer on the surface of the aluminum stranded wire is arranged on the inner side surface of the second clamping plate 8. Further for the convenience of changing abrasive paper 7, be equipped with erection joint and lower erection joint on second grip block 8, be close to on the lateral surface of second grip block 8 and erect seam department an organic whole and be equipped with the upper junction plate, be close to down erection joint department an organic whole and be equipped with down the connecting plate, the upper end of abrasive paper 7 is passed the erection joint and is passed through the clip centre gripping on the upper junction plate, the lower extreme of abrasive paper 8 passes down the erection joint and passes through the clip centre gripping on the connecting plate down.
In order to adapt to different heights, the insulating rod 14 is a multi-stage telescopic rod so as to adjust the height of the clamping mechanism.
When the aluminum stranded conductor clamp is used, firstly, a butterfly nut 10 is appropriately rotated according to the diameter of an aluminum stranded conductor to determine the maximum opening angle of a second clamping plate 8, then a positioning screw rod 3 is appropriately rotated to ensure that the second clamping plate 8 is opened by an appropriate angle so as to conveniently pre-position the clamping position of the aluminum stranded conductor, an insulating rod 14 is held by a hand, a clamping mechanism is lifted, the aluminum stranded conductor on one side of a current transformer is placed in the opening angle of a first clamping plate 5 or the second clamping plate 8, if an oxide layer on the surface needs to be removed, the insulating rod 14 is twisted back and forth and removed through abrasive paper 7, the clamping mechanism is continuously moved upwards to be clamped on the aluminum stranded conductor under the combined action of a first pressure spring 11 and a second pressure spring 4, the height of the insulating rod 14 is adjusted, and a triangular support frame; the device is clamped on the aluminum stranded wire on the other side of the current transformer, and the test wire 1 is connected to a test instrument.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: it is to be understood that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof, but such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. A current transformer test auxiliary tool is characterized by comprising an insulating rod, wherein the top end of the insulating rod is connected with a clamping mechanism, the clamping mechanism comprises a base connected to the top end of the insulating rod, a first clamping plate is integrally arranged on the base, a second clamping plate is hinged on the base, the first clamping plate and the second clamping plate are clamped on an aluminum stranded wire in an interaction mode, a space between the first clamping plate and the second clamping plate is formed in the inner portion, a first straight rod is hinged to the bottom of the inner side face of the first clamping plate, a through hole for penetrating the first straight rod is formed in the second clamping plate, the first straight rod penetrates through the through hole and is in sliding connection with the second clamping plate, a butterfly nut is arranged on the first straight rod and is located on the outer side of the second clamping plate, a first pressure spring is sleeved on the first straight rod between the butterfly nut and the outer side face of the second clamping plate, a positioning screw rod is in threaded connection with the bottom of the first clamping plate, the inner end of the positioning screw is abutted against the inner side face of the second clamping plate, a wiring terminal used for connecting a test wire is arranged on the base, and the first clamping plate and the base are made of conductive materials.
2. The current transformer test auxiliary tool according to claim 1, wherein a pressing tongue is arranged on the inner side surface of the first clamping plate, the top end of the pressing tongue is hinged to the inner side surface of the first clamping plate, and a second pressing spring is arranged between the bottom end of the pressing tongue and the inner side surface of the first clamping plate.
3. The current transformer test auxiliary tool according to claim 2, wherein an induction type live alarm is fixed on the outer side surface of the first clamping plate or the second clamping plate.
4. The current transformer test auxiliary tool of claim 3, wherein abrasive paper for removing an oxide layer on the surface of the aluminum stranded wire is provided on the inner side surface of the second clamping plate.
5. The current transformer test auxiliary tool according to claim 4, wherein the second holding plate is provided with an upper mounting slit and a lower mounting slit, an upper connecting plate is integrally provided on an outer side surface of the second holding plate near the upper mounting slit, a lower connecting plate is integrally provided on an outer side surface of the second holding plate near the lower mounting slit, an upper end of the abrasive paper passes through the upper mounting slit and is held on the upper connecting plate by a clip, and a lower end of the abrasive paper passes through the lower mounting slit and is held on the lower connecting plate by a clip.
6. The current transformer testing aid of any one of claims 1 to 5, wherein the insulating rod is a multi-stage telescopic rod.
7. The current transformer testing aid of claim 6, wherein a triangular support is mounted to a bottom end of the insulating rod.
8. The current transformer testing aid of claim 6, wherein the base is threadably connected to an insulating rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711224357.8A CN107796964B (en) | 2017-11-29 | 2017-11-29 | Current transformer experiment appurtenance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711224357.8A CN107796964B (en) | 2017-11-29 | 2017-11-29 | Current transformer experiment appurtenance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107796964A CN107796964A (en) | 2018-03-13 |
| CN107796964B true CN107796964B (en) | 2020-03-27 |
Family
ID=61537853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711224357.8A Active CN107796964B (en) | 2017-11-29 | 2017-11-29 | Current transformer experiment appurtenance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107796964B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013170874A1 (en) * | 2012-05-14 | 2013-11-21 | Siemens Aktiengesellschaft | Multiple terminals bushing assembly |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201066368Y (en) * | 2007-07-19 | 2008-05-28 | 山东力创科技有限公司 | Integrated testing pole for 6/10kV high voltage parameter |
| CN203422399U (en) * | 2013-08-12 | 2014-02-05 | 国家电网公司 | High-altitude test clamp for high-voltage tests |
| CN104698420A (en) * | 2013-12-09 | 2015-06-10 | 国家电网公司 | Wiring device |
| CN204101717U (en) * | 2014-09-05 | 2015-01-14 | 国网安徽省电力公司阜阳供电公司 | A kind of mutual inductor measuring tries out wire clamp |
| CN204101601U (en) * | 2014-09-29 | 2015-01-14 | 国家电网公司 | A kind of test clip |
| CN204651808U (en) * | 2015-05-08 | 2015-09-16 | 国家电网公司 | A kind of portable 120 ~ 400mm 2steel reinforced aluminium conductor shunt line jig |
| CN106569006B (en) * | 2016-11-09 | 2019-04-02 | 国网山东省电力公司临朐县供电公司 | A kind of Telescopic clip-on ammeter for overhead transmission line measurement |
| CN206671453U (en) * | 2017-04-25 | 2017-11-24 | 国网河南省电力公司检修公司 | Lightning arrester live-line test safety appliance |
| CN207541103U (en) * | 2017-11-29 | 2018-06-26 | 国家电网公司 | A kind of current transformer tests auxiliary tool |
-
2017
- 2017-11-29 CN CN201711224357.8A patent/CN107796964B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013170874A1 (en) * | 2012-05-14 | 2013-11-21 | Siemens Aktiengesellschaft | Multiple terminals bushing assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107796964A (en) | 2018-03-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108155601A (en) | A kind of method that on-load straight line pole changes tension-resistant rod | |
| CN204925164U (en) | Electric power wiring anchor clamps | |
| CN115902558B (en) | Withstand voltage testing device of electric energy meter | |
| CN110890715B (en) | Bypass drainage tool for live-line installation of power transmission line ground potential method and defect handling operation method thereof | |
| CN203385761U (en) | Wiring clamp for loop resistor measuring and overpressure resistant test | |
| CN204439667U (en) | A kind of portable type current transformer testing clamp | |
| CN203148982U (en) | Test fixture for loop resistance of circuit breaker | |
| CN111541066B (en) | Scalable portable multi-functional earth connection | |
| CN202995021U (en) | Outdoor high-voltage mutual inductor testing jumper conductor clamper | |
| CN107796964B (en) | Current transformer experiment appurtenance | |
| CN203658522U (en) | Safety equipment voltage withstand test special device | |
| CN112213524A (en) | Experimental termination of multi-functional transformer of 110kV and above transformer suspension type | |
| CN207541103U (en) | A kind of current transformer tests auxiliary tool | |
| CN217332532U (en) | Multifunctional wiring device for live-line test of lightning arrester | |
| CN202572183U (en) | Large-current telescopic high-altitude cable connecting clamp | |
| CN215641781U (en) | Integral type power frequency current test device | |
| CN203705590U (en) | Floor-type special device for withstand voltage tests of safety equipment | |
| CN212137110U (en) | Insulating support type drop switch load bypass device | |
| CN203616353U (en) | Adhesive type independent high-voltage test wiring device | |
| CN202453469U (en) | Transformer substation outdoor switch equipment testing device | |
| CN110895323A (en) | Portable mutual inductor test rod | |
| CN108490242B (en) | Novel electricity test device | |
| CN218099276U (en) | Special insulating wire supporting bracket for electrical test | |
| CN104967029A (en) | Insulation rod fixation device | |
| CN206673143U (en) | A kind of Multifunction altitude test connection pincers |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |