CN109444795B - Auxiliary device, system and method for calibrating handcart type transformer - Google Patents
Auxiliary device, system and method for calibrating handcart type transformer Download PDFInfo
- Publication number
- CN109444795B CN109444795B CN201811488116.9A CN201811488116A CN109444795B CN 109444795 B CN109444795 B CN 109444795B CN 201811488116 A CN201811488116 A CN 201811488116A CN 109444795 B CN109444795 B CN 109444795B
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- type transformer
- handcart type
- panel
- side current
- handcart
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000012795 verification Methods 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000003068 static effect Effects 0.000 description 9
- 238000012360 testing method Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
Classifications
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention relates to an auxiliary tool, a calibration system and a calibration method for a handcart type transformer, which comprise a panel and an aviation socket matched with an aviation plug of the handcart type transformer to be calibrated, wherein a wiring terminal of the aviation socket is connected with a wiring terminal arranged on the panel through a secondary side current lead, and the wiring terminal is used for being connected with a calibration device.
Description
Technical Field
The invention relates to the technical field of transformer verification equipment, in particular to an auxiliary device, a verification system and a verification method for handcart type transformer verification.
Background
The checking handcart type transformer needs to be subjected to appearance inspection, the appearance of the checked transformer is good, and the nameplate and the mark meet the regulation requirements. Then, wiring work before verification is performed. And performing an insulation test on the next step, measuring the insulation resistance of the transformer by using a 2.5kV megohmmeter, wherein the frequency of the power frequency withstand voltage test is 50Hz plus or minus 0.5Hz, and the distortion degree is not more than 5% of sinusoidal voltage. And then determining the polarity of the transformer by using a polarity indicating function or an error measuring function of the calibrator. And finally, performing error measurement, stability test, operation variation test and magnetic saturation margin test.
The wiring work takes up a relatively long time in the checking of the handcart type transformer, and more manpower is required to be consumed. The wiring work is divided into two steps, and the first step is to finish the preparation of the secondary side. Firstly, a verifier needs to detach the front cover of the handcart type transformer, then detach the secondary wire, and then clamp the clamp for experiments on the secondary wire. And secondly, connecting lines on the primary side. The wire hook is required to be clamped on the contact. The method needs to open the secondary wiring baffle of the handcart, then the wiring of the original connected secondary wiring column is completely loosened, the checking can be carried out, and the wiring is also needed to be re-connected after the checking is finished, so that the working time is definitely prolonged, the working efficiency is reduced, the secondary wiring is repeatedly disassembled and assembled due to the checking, the wiring error caused by negligence of a checker cannot be ensured, and the error wiring brings a plurality of potential safety hazards to human bodies and equipment.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides an auxiliary tool for checking the handcart type transformer, which is simple to operate and improves the safety and the high efficiency of checking work.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides an appurtenance is used in handcart-type transformer check-up, includes panel and with wait to check-up handcart-type transformer's aviation plug assorted aviation socket, aviation socket's binding post passes through the terminal connection that secondary side current wire and panel set up, the terminal is used for being connected with the verifying attachment.
Furthermore, aviation socket and panel all fix on the support, the support is fixed in the box inside.
Further, the support includes the stand, stand bottom and I shape support fixed connection, the stand top is fixed with socket fixed part, socket fixed part comprises a plurality of fixed plates, aviation socket and one of them fixed plate fixed connection, and the fixed plate of fixed aviation socket is equipped with the opening that is used for the secondary side current wire to pass, the top at socket fixed part is fixed to the panel.
Further, the case is provided with a switch door for opening and closing an inner space of the case.
Furthermore, the bottom of the box body is provided with universal wheels, so that the box body can be moved conveniently.
Further, the bracket and the box body are made of steel materials.
Further, the panel is made of an insulating material.
The invention also discloses a handcart type transformer verification system, which comprises the handcart type transformer verification auxiliary tool, a verification device and a primary side current mechanism, wherein the verification device can be connected with corresponding binding posts of the panel through a verification line, and provides secondary side current for the handcart type transformer to be verified by utilizing a secondary side current lead, an aviation socket and an aviation plug of the handcart type transformer to be verified, and the primary side current mechanism is used for connecting the handcart type transformer to be verified and the verification device and providing primary side current for the handcart type transformer to be verified.
Further, the primary side current mechanism comprises a primary static contact and a primary side current wire, the primary static contact is fixed at one end of the conducting plate, the other end of the conducting plate is fixedly connected with the primary side current wire, and the shape of the primary static contact is matched with that of the quincuncial contact of the handcart type transformer to be checked.
The invention also discloses a using method of the handcart type transformer verification system, which comprises the following steps:
step 1: and connecting the checking device with a corresponding binding post of the panel through a checking wire, inserting an aviation plug of the handcart type transformer to be checked into an aviation socket, and connecting the primary side current mechanism with the handcart type transformer to be checked and the checking device.
Step 2: starting a verification device to verify the handcart type transformer to be verified.
The invention has the beneficial effects that:
by using the auxiliary tool for checking the handcart type transformer, the aviation plug of the handcart type transformer to be checked is inserted into the aviation socket of the auxiliary tool, so that the handcart type transformer can be connected with a checking device, the complex steps of a traditional checking method are omitted, time and labor are saved, the number of checking workers is reduced, the wiring time of checking work is greatly saved, the checking work efficiency is improved, and the safety is ensured.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not limit the application.
FIG. 1 is a schematic front view of the overall structure of the present invention;
FIG. 2 is a schematic side view of the overall structure of the present invention;
FIG. 3 is a schematic view of the internal structure of the case of the present invention;
FIG. 4 is a schematic view in the direction A of FIG. 3;
FIG. 5 is a schematic view of the structure of the bracket of the present invention;
FIG. 6 is a schematic diagram of a primary current mechanism according to the present invention;
the device comprises a aviation socket, a panel, a binding post, a secondary side current lead, a column, an I-shaped base, a fixing plate, an opening, a door opening and closing, a door lock structure, a box body, a universal wheel, a handle, a display screen, a primary static contact, a conductive plate and a primary side current lead, wherein the aviation socket, the panel, the binding post, the secondary side current lead, the column, the I-shaped base, the fixing plate, the opening and the door opening are arranged, the door opening and closing are arranged, the door lock structure is arranged, the box body is arranged, the universal wheel is arranged, the handle is arranged, the display screen is arranged, the primary static contact is arranged, and the conductive plate is arranged, and the primary side current lead is arranged.
Detailed Description
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
As introduced by the background technology, the existing handcart type transformer is long in wiring work occupation time, consumes more manpower and material resources, has potential safety hazards, and provides an auxiliary tool for handcart type transformer verification.
In an exemplary embodiment of the application, as shown in fig. 1-5, an auxiliary tool for calibrating a handcart-type transformer comprises an aviation socket 1 and a panel 2, wherein the aviation socket is matched with an aviation plug of the handcart-type transformer to be calibrated, a plurality of binding posts 3 are arranged on the panel, the binding posts can be connected with a calibration device through calibration wires, the binding posts of the aviation socket are connected with the corresponding binding posts through secondary side current wires 4, and after the aviation plug of the handcart-type transformer to be calibrated is inserted into the aviation socket, the calibration device is connected with the calibration device through the secondary side current wires and the calibration wires and provides secondary side current for the handcart-type transformer to be calibrated.
The panel and the aviation socket are all fixed on the support, the support is fixed inside the box 11, the support includes two stand 5, two stand bottom welded fastening is on I shape base 6, I shape base is fixed on the box bottom surface, the top welded fastening of two stand has socket fixed part, the socket fixed part comprises four fixed plates 7 welded fastening, aviation socket passes through the bolt fastening on one of them fixed plate, and the fixed plate of fixed aviation socket is equipped with the opening 8 that is used for the secondary side current wire to pass, support and box all adopt steel to make, and the material is convenient, and the processing cost is low.
The panel is fixed on the top of socket fixed part, and the box top is not sealed, exposes the panel in the box outside, makes things convenient for operating personnel to wire terminal and verifying attachment, the panel adopts insulating material to make, has guaranteed operating personnel's safety.
Be equipped with switch door 9 on one side wall of box, switch door rotates through hinge and the side wall of box to be connected, be provided with the lock structure 10 of mutually supporting on switch door and the side wall, can lock switch door and the side wall through the lock structure. The door lock structure may be an existing door lock structure, and will not be described in detail herein. The switch door is arranged to facilitate replacement and maintenance of structures such as aviation sockets, panels, secondary side current wires and the like in the switch door.
Four universal wheels 12 are arranged at the bottom of the box body, so that an operator can conveniently move the whole auxiliary tool for verification. The handle 13 is arranged at the top end of the box body, so that an operator can push the box body conveniently. The panel is also provided with a display screen 14 for displaying parameters such as current information in the verification process.
The invention also discloses a handcart type transformer calibration system, which comprises the handcart type transformer calibration auxiliary tool, a calibration device and a primary side current mechanism, wherein the calibration device adopts the conventional handcart type transformer calibration device, the calibration device is connected with a binding post on a handcart type transformer calibration auxiliary tool panel through a calibration line, the calibration device can provide secondary side current for the handcart type transformer to be calibrated through a secondary side current wire, an aviation socket and an aviation plug of the handcart type transformer, the primary current mechanism is used for connecting the calibration device and the handcart type transformer to be calibrated, and is used for providing primary side current for the handcart type transformer to be calibrated, as shown in fig. 6, the primary current mechanism comprises a primary static contact 15, the primary static contact is matched with a quincuncial contact of the handcart type transformer to be calibrated, and can be inserted into the quincuncial contact of the handcart type transformer to be calibrated, the primary static contact is connected with one end of a conducting plate 16 through a bolt, the other end of the conducting plate is connected with one end of the primary side current wire 17 through the bolt, and the other end of the conducting plate is used for connecting the primary side current wire with the calibration device.
The calibration device may be an existing calibration device for a handcart type transformer, and the structure thereof will not be described in detail herein.
The invention also discloses a working method of the handcart type transformer verification system, which comprises the following steps:
step 1: connecting terminals of the checking device are connected with corresponding binding posts on the panel through checking wires, an aviation plug of the handcart type transformer to be checked is inserted into an aviation socket, a primary static contact is inserted into a plum blossom contact of the handcart type transformer to be checked, and a primary side wire is connected with the corresponding connecting terminals on the checking device.
Step 2: the calibration device is started to work, the calibration device provides secondary side current for the handcart type transformer through the secondary side current lead, the aviation socket and the aviation plug, the calibration device provides primary side current for the handcart type sensor through the primary side lead, the primary fixed contact and the plum blossom contact, and the calibration principle of the calibration device is the same as that of the conventional calibration device, and the calibration principle of the calibration device is not described in detail herein.
According to the invention, the auxiliary tool for checking the handcart type transformer is arranged, and the aviation socket and the aviation plug are adopted to connect the checking device with the secondary side of the handcart type transformer, so that the complex steps of the traditional method are avoided, the operation is simple, the number of participants in checking work is reduced (from 16 persons to 6-9 persons at most), the working time is greatly reduced (from 2.5 hours to 0.8 hours), and the safety is ensured.
While the foregoing description of the embodiments of the present invention has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the invention, but rather, it is intended to cover all modifications or variations within the scope of the invention as defined by the claims of the present invention.
Claims (8)
1. The auxiliary tool for calibrating the handcart type transformer is characterized by comprising a panel and an aviation socket matched with an aviation plug of the handcart type transformer to be calibrated, wherein a wiring terminal of the aviation socket is connected with a wiring terminal arranged on the panel through a secondary side current lead, and the wiring terminal is used for being connected with a calibration device;
the aviation socket and the panel are both fixed on a bracket, and the bracket is fixed in the box body;
the panel is fixed on the top end of the socket fixing part, the top of the box body is not closed, and the panel is exposed outside the box body.
2. The auxiliary tool for calibrating the handcart type transformer according to claim 1, wherein the support comprises a stand column, the bottom end of the stand column is fixedly connected with the I-shaped support, the top end of the stand column is fixedly provided with a socket fixing part, the socket fixing part is composed of a plurality of fixing plates, the aviation socket is fixedly connected with one of the fixing plates, the fixing plate for fixing the aviation socket is provided with an opening for passing a secondary side current wire, and the panel is fixed at the top end of the socket fixing part.
3. The auxiliary tool for checking a cart-type transformer according to claim 1, wherein said case is provided with a switch door for opening and closing an inner space of the case.
4. The auxiliary tool for calibrating the handcart type transformer according to claim 1, wherein the bottom of the box body is provided with universal wheels, so that the box body can be moved conveniently.
5. The auxiliary tool for checking the handcart type transformer according to claim 1, wherein the bracket and the case are made of steel materials.
6. An auxiliary tool for checking a handcart-type transformer according to claim 1, wherein the panel is made of an insulating material.
7. The handcart type transformer verification system is characterized by comprising a verification device, a primary side current mechanism and the auxiliary tool for handcart type transformer verification, wherein the verification device can be connected with corresponding binding posts of a panel through a verification line;
the primary side current mechanism comprises a primary fixed contact and a primary side current wire, the primary fixed contact is fixed at one end of a conducting plate, the other end of the conducting plate is fixedly connected with the primary side current wire, and the shape of the primary fixed contact is matched with that of a quincuncial contact of the handcart type transformer to be checked.
8. A method of operation of the cart type transformer verification system of claim 7, comprising the steps of:
step 1: connecting a checking device with a corresponding binding post of a panel through a checking wire, inserting an aviation plug of the handcart type transformer to be checked into an aviation socket, and connecting a primary side current mechanism with the handcart type transformer to be checked and the checking device;
step 2: starting a verification device to verify the handcart type transformer to be verified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811488116.9A CN109444795B (en) | 2018-12-06 | 2018-12-06 | Auxiliary device, system and method for calibrating handcart type transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811488116.9A CN109444795B (en) | 2018-12-06 | 2018-12-06 | Auxiliary device, system and method for calibrating handcart type transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109444795A CN109444795A (en) | 2019-03-08 |
| CN109444795B true CN109444795B (en) | 2024-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811488116.9A Active CN109444795B (en) | 2018-12-06 | 2018-12-06 | Auxiliary device, system and method for calibrating handcart type transformer |
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| CN (1) | CN109444795B (en) |
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| CN111707970A (en) * | 2020-06-28 | 2020-09-25 | 国网山东省电力公司威海供电公司 | Secondary phase checking device of combined mutual inductor |
| CN217085245U (en) * | 2021-11-04 | 2022-07-29 | 江苏威伦智能电气设备有限公司 | Novel polarity tester for current transformer |
| CN218896185U (en) * | 2022-08-07 | 2023-04-21 | 华能澜沧江水电股份有限公司 | Auxiliary device for voltage transformer test |
-
2018
- 2018-12-06 CN CN201811488116.9A patent/CN109444795B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201413358Y (en) * | 2009-06-08 | 2010-02-24 | 河南省电力公司信阳供电公司 | High-voltage metering box |
| CN102393477A (en) * | 2011-11-03 | 2012-03-28 | 四川电力科学研究院 | Integration wiring apparatus used for high voltage three-phase combination mutual inductor on-site detection |
| CN102769277A (en) * | 2012-05-31 | 2012-11-07 | 德清县供电局 | Improved structure of safety protection device of low-voltage distribution cabinet |
| CN102903490A (en) * | 2012-09-21 | 2013-01-30 | 沈阳全密封变压器股份有限公司 | Intelligent bushing |
| CN204331009U (en) * | 2014-12-02 | 2015-05-13 | 国网河南省电力公司洛阳供电公司 | Electric power mutual-inductor calibration equipment |
| CN209486282U (en) * | 2018-12-06 | 2019-10-11 | 国家电网有限公司 | A kind of handcart-type transducer check auxiliary device, check system |
| CN111707970A (en) * | 2020-06-28 | 2020-09-25 | 国网山东省电力公司威海供电公司 | Secondary phase checking device of combined mutual inductor |
| CN217085245U (en) * | 2021-11-04 | 2022-07-29 | 江苏威伦智能电气设备有限公司 | Novel polarity tester for current transformer |
| CN218896185U (en) * | 2022-08-07 | 2023-04-21 | 华能澜沧江水电股份有限公司 | Auxiliary device for voltage transformer test |
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| CN109444795A (en) | 2019-03-08 |
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