CN109884365A - A kind of transformer neutral point DC magnetic biasing current measuring instrument of hot line job - Google Patents

A kind of transformer neutral point DC magnetic biasing current measuring instrument of hot line job Download PDF

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Publication number
CN109884365A
CN109884365A CN201810496165.0A CN201810496165A CN109884365A CN 109884365 A CN109884365 A CN 109884365A CN 201810496165 A CN201810496165 A CN 201810496165A CN 109884365 A CN109884365 A CN 109884365A
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CN
China
Prior art keywords
pulling force
force rope
rotation
joint arms
fixed pulley
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.)
Pending
Application number
CN201810496165.0A
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Chinese (zh)
Inventor
丁国成
王刘芳
田宇
杨海涛
陈庆涛
吴兴旺
尹睿涵
闫柯柯
穆永保
郭栋梁
李成广
刘勇
李亚军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ANHUI ZHENGGUANGDIAN ELECTRIC TECHNOLOGIES Co Ltd
State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Anhui Electric Power Co Ltd
Handan Power Supply Co of State Grid Hebei Electric Power Co Ltd
Original Assignee
ANHUI ZHENGGUANGDIAN ELECTRIC TECHNOLOGIES Co Ltd
State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Anhui Electric Power Co Ltd
Handan Power Supply Co of State Grid Hebei Electric Power Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ANHUI ZHENGGUANGDIAN ELECTRIC TECHNOLOGIES Co Ltd, State Grid Corp of China SGCC, Electric Power Research Institute of State Grid Anhui Electric Power Co Ltd, Handan Power Supply Co of State Grid Hebei Electric Power Co Ltd filed Critical ANHUI ZHENGGUANGDIAN ELECTRIC TECHNOLOGIES Co Ltd
Priority to CN201810496165.0A priority Critical patent/CN109884365A/en
Publication of CN109884365A publication Critical patent/CN109884365A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a kind of transformer neutral point DC magnetic biasing current measuring instruments of hot line job, belong to transformer fields of measurement.A kind of transformer neutral point DC magnetic biasing current measuring instrument of hot line job, when carrying out transformer measurement operation, there are two types of situation one kind in the operation of busbar bottom, at this time, folding switch need to be directly initiated without starting compressed gas bar only, stepper motor starts operation after starting folding switch, rotation axis is driven to drive rotation spinner handle to rotate in rotation case, make to rotate secondary bar forward movement, to drive movement BOB(beginning of block) mobile, increase distance between static block and moving mass, until reaching busbar width, hereafter folding switch is disconnected, stepper motor is set to stop working, strength power spring is started to work at this time, rotation spinner handle is driven to rotate backward in rotation case, move backward rotation secondary bar, to make current sensor block on busbar.

Description

A kind of transformer neutral point DC magnetic biasing current measuring instrument of hot line job
Technical field
The present invention relates to transformer fields of measurement, straight more specifically to a kind of transformer neutral point of hot line job Flow bias current measuring instrument.
Background technique
In recent years, super high voltage direct current electricity transmission is answered in China's long distance powedr transmission extensively with the characteristics of its economical and efficient With as more and more DC power transmission lines put into operation, direct current transportation is in monopole ground return circuit and bipolar off-center operation The problem of influencing under mode on AC transformer, increasingly highlights.
But instrument before is inconvenient to use and installation, electric current in measuring transformer neutral ground row that can not be easy DC component.
Summary of the invention
1. technical problems to be solved
It, can not easy installation and measuring transformer neutral ground for existing in the prior art when transformer measures operation In row the problem of the DC component of electric current, the purpose of the present invention is to provide a kind of transformer neutral point direct current of hot line job is inclined Magnetoelectricity flow gauge, the DC component of the electric current in easy installation and measuring transformer neutral ground row may be implemented in it.
2. technical solution
To solve the above problems, the present invention adopts the following technical scheme that.
(1) the transformer neutral point DC magnetic biasing current measuring instrument of a kind of hot line job, including basis arm, the basis arm Bottom end is connected with handle, is connected with battery on the left of the handle inner, the basis arm bottom is disposed with from top to bottom Telescoping switch and folding switch, the basis arm top is socketed with two joint arms, is socketed with three joint arms above two joint arm, described It is socketed with four joint arms above three joint arms, compressed gas bar, the compressed gas bar top are connected in the middle part of the basis arm inner bottom It is socketed with mobile bar, the mobile bar top is connected with fixed pulley A, connects on the left of compressed gas bar in the middle part of the basis arm inner bottom It is connected to pulling force rope A, the pulling force rope A connect around the fixed pulley A other end with three joint arms inner bottom, the three joint arms inner bottom Fixed pulley B is connected on the right side of the pulling force rope A of end, four joint arm bottom end is connected with pulling force rope B, and the pulling force rope B bypasses fixed pulley B It is connect on the right side of the other end and four joint arm bottom ends, is connected with fixed pulley C, four joint arm bottom on the right side of the three joint arms inner upper end Pulling force rope C is connected with above right side, the pulling force rope C connect around the fixed pulley C other end and two joint arm inner bottoms right sides, institute It states and is connected with fixed pulley D on the left of two joint arm bottom ends, be connected with pulling force rope D, the pulling force rope D on the left of the basis arm inner upper end For the other end around connecting on the left of fixed pulley D and three joint arms bottom end, the left and right sides is connected with fixing axle above four joint arm, described Fixed hub is connected to rotating bar, and static block is connected with above the rotating bar, is connected with step on the left of the static block lower inside Into motor, it is connected with rotation axis on the right side of the stepper motor, is connected with rotation spinner handle, the rotation spinner handle on the right side of the rotation axis Right hand external is socketed with rotation case, and inside is socketed with revolute pair bar on the right side of the rotation spinner handle, connects on the right side of the rotation secondary bar It is connected to moving mass, the static block inner upper is connected with fixed link, and rotate gear, the rotation are socketed in the fixed link Energetically power spring is socketed on gear, the strength power spring other end is connect with one end on the left of rotation spinner handle, on the right side of the static block Top is all connected with current sensor on the left of top and moving mass, and the battery is electrically connected by telescoping switch with compressed gas bar It connects, the battery is electrically connected by folding switch with stepper motor.
Preferably, the center the fixed pulley A is connected with transmission shaft one end, and the transmission shaft other end is connected with spiral It takes turns, is connected with transmission line on the reel.
Preferably, the right handle is provided with supported chamber, and the handle, which is located above supported chamber, is connected with rotary shaft, institute It states and is connected with support rod in rotary shaft.
Preferably, protecting box is provided on the left of the basis arm bottom end, the transmission line other end runs through protecting box.
Preferably, the pulling force rope A, pulling force rope B, pulling force rope C and pulling force rope D are made by ultrahigh molecular weight polyethylene.
Preferably, protective cover is provided with outside the current sensor.
3. beneficial effect
Compared with the prior art, the present invention has the advantages that
(1) when carrying out transformer measurement operation, there are two types of situation one kind in the operation of busbar bottom, at this point, without starting compressed gas Bar need to only directly initiate folding switch, and stepper motor starts operation after starting folding switch, drive rotation axis to band Turn is moved spinner handle and is rotated in rotation case, makes to rotate secondary bar forward movement, to drive movement BOB(beginning of block) mobile, makes static block Distance increases between moving mass, until reaching busbar width, hereafter disconnects folding switch, stepper motor is made to stop work Make, strength power spring is started to work at this time, and rotation spinner handle is driven to rotate backward in rotation case, and rotation secondary bar is moved backward, To make current sensor block on busbar.
(2) it when encountering second situation, needs for current sensor to be installed at this time above busbar, needs to start at this time Compressed gas bar only need to press telescoping switch, and compressed gas bar starting at this time drives mobile bar to rise, so that pulling force rope A be made to open Begin to move, so that three joint arms be driven to begin to ramp up, drives pulling force rope B mobile at this time, increase four joint arms, three joint arms rise at this time To drive fixed pulley to rise, fixed pulley drives pulling force rope mobile, since pulling force rope both ends are connected with four joint arm bottom ends, and draws Power rope solderless wrapped connection rises on fixed pulley so that four joint arms are synchronous with three joint arms, while making two sections under the action of pulling force rope Arm rises, while driving pulling force rope is mobile three joint arms is driven to rise, and effective laborsaving rising is realized, convenient for lifting, as pulling force rope A It will drive fixed pulley A rotation when mobile, to drive reel rotation to start turning transmission line by transmission shaft, when end is made When industry, since the mobile drive fixed pulley A of pulling force rope A is rotated backward, to drive reel to rotate backward, to make transmission line It packs up.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention;
Fig. 2 is stretching structure schematic diagram of the present invention;
Fig. 3 is opening-closing structure schematic diagram of the present invention;
Fig. 4 is opening-closing structure perspective view of the explosion of the present invention;
Fig. 5 is fixed pulley A structural schematic diagram of the present invention;
Fig. 6 is handle arrangement schematic diagram of the present invention;
Fig. 7 is electrical block diagram of the present invention.
Figure label explanation:
1 compressed gas bar, 2 fixed pulley C, 3 four joint arms, 4 fixed pulley A, 5 fixed pulley D, 6 basis arms, 7 two joint arms, 8 three joint arms, 9 are moved Lever, 10 transmission shafts, 11 transmission lines, 12 reels, 13 static blocks, 14 rotating bars, 15 telescoping switch, 16 support rods, 17 foldings Switch, 18 handles, 19 batteries, 20 protecting box, 21 fixing axles, 22 stepper motors, 23 rotate gears, 24 strength power springs, 25 are consolidated Fixed pole, 26 current sensors, 27 moving mass, 28 rotation secondary bars, 29 rotation cases, 30 rotation spinner handles, 31 rotation axis, 32 fixed pulleys B, 33 pulling force rope A, 34 pulling force rope D, 35 pulling force rope C, 36 pulling force rope B, 37 rotary shafts, 38 supported chamber.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention;Technical solution in the embodiment of the present invention carries out clear, complete Site preparation description;Obviously;Described embodiments are only a part of the embodiments of the present invention;Instead of all the embodiments.It is based on Embodiment in the present invention;It is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment;It shall fall within the protection scope of the present invention.
Embodiment 1:
Fig. 1-7, a kind of transformer neutral point DC magnetic biasing current measuring instrument of hot line job, including basis arm 6 are please referred to, basis 6 bottom end of arm is connected with handle 18, and 18 inside left of handle is connected with battery 19, and 6 bottom of basis arm is set gradually from top to bottom There are telescoping switch 15 and folding switch 17, be socketed with two joint arms 7 above basis arm 6, is socketed with three joint arms 8 above two joint arms 7, three It is socketed with four joint arms 3 above joint arm 8, is connected with compressed gas bar 1 in the middle part of 6 inner bottom of basis arm, is socketed with above compressed gas bar 1 Mobile bar 9,9 top of mobile bar are connected with fixed pulley A4, are connected with pulling force on the left of compressed gas bar 1 in the middle part of 6 inner bottom of basis arm Restrict A33, and pulling force rope A33 connect around the fixed pulley A4 other end with 8 inner bottom of three joint arms, 8 inner bottom pulling force rope of three joint arms Fixed pulley B32 is connected on the right side of A33, four joint arms, 3 bottom end is connected with pulling force rope B36, and pulling force rope B36 is another around fixed pulley B32 It is connect on the right side of end and four joint arms, 3 bottom end, fixed pulley C2, four joint arms, 3 bottom right top is connected on the right side of 8 inner upper end of three joint arms It is connected with pulling force rope C35, pulling force rope C35 connect around the fixed pulley C2 other end and two joint arms, 7 inner bottom right side, two joint arms 7 It is connected with fixed pulley D5 on the left of bottom end, is connected with pulling force rope D34 on the left of 6 inner upper end of basis arm, the pulling force rope D34 other end bypasses It is connect on the left of fixed pulley D5 and 8 bottom end of three joint arms, four joint arms, the 3 top left and right sides is connected with fixing axle 21, and fixing axle 21 is socketed There is rotating bar 14, static block 13 is connected with above rotating bar 14, is connected with stepper motor 22 on the left of 13 lower inside of static block, is walked It is connected with rotation axis 31 on the right side of into motor 22, rotation spinner handle 30 is connected on the right side of rotation axis 31, rotates 30 right hand external set of spinner handle It is connected to rotation case 29,30 right side of rotation spinner handle is internal to be socketed with revolute pair bar 28, rotates and is connected with moving mass on the right side of secondary bar 28 27,13 inner upper of static block is connected with fixed link 25, and rotate gear 23 is socketed in fixed link 25, is socketed in rotate gear 23 Energetically power spring 24,24 other end of strength power spring are connect with rotation 30 left side one end of spinner handle, 13 right side top of static block and movement 27 left side top of block is all connected with current sensor 26, and battery 19 is electrically connected by telescoping switch 15 and compressed gas bar 1, is stored Battery 19 is electrically connected by folding switch 17 and stepper motor 22.The center fixed pulley A4 is connected with 10 one end of transmission shaft, 10 other end of transmission shaft is connected with reel 12, and transmission line 11 is connected on reel 12.
Supported chamber 38 is provided on the right side of handle 18, handle 18, which is located above supported chamber 38, is connected with rotary shaft 37, rotary shaft Support rod 16 is connected on 37.
Protecting box 20 is provided on the left of 6 bottom end of basis arm, 11 other end of transmission line runs through protecting box 20.
Pulling force rope A33, pulling force rope B36, pulling force rope C35 and pulling force rope D34 are made by ultrahigh molecular weight polyethylene.
Protective cover is provided with outside current sensor 26.
Working principle: when carrying out transformer measurement operation, there are two types of situation one kind in the operation of busbar bottom, at this point, being not necessarily to Starting 1 need of compressed gas bar directly initiate folding switch 17, and stepper motor 22 starts operation after starting folding switch 17, Rotation axis 31 is driven to drive rotation spinner handle 30 to rotate in rotation case 29, makes to rotate the forward movement of secondary bar 28, thus band Dynamic moving mass 27 starts to move, and increases distance between static block 13 and moving mass 27, until reaching busbar width, hereafter Folding switch 17 is disconnected, stepper motor 22 is made to stop working, strength power spring 24 is started to work at this time, and rotation spinner handle 30 is driven to turn It is rotated backward in dynamic shell 29, moves backward rotation secondary bar 28, so that current sensor 26 be made to block on busbar.
When encountering second situation, needs for current sensor 26 to be installed at this time above busbar, need to start at this time Compressed gas bar 1 only need to press telescoping switch 15, and the starting of compressed gas bar 1 at this time drives mobile bar 9 to rise, to make pulling force Rope A33 starts to move, so that three joint arms 8 be driven to begin to ramp up, drives pulling force rope B36 mobile at this time, increase four joint arms 3, this When three joint arms 8 rise that fixed pulley C2 is driven to rise, fixed pulley C2 drives pulling force rope C35 mobile, due to the both ends pulling force rope B36 It is connected with four joint arms, 3 bottom end, and pulling force rope B36 solderless wrapped connection is on fixed pulley B32, so that four joint arms 3 are synchronous with three joint arms 8 Rise, while increase two joint arms 7 under the action of pulling force rope C35, while driving pulling force rope D34 is mobile to drive in three joint arms 8 It rises, realizes effective laborsaving rising, convenient for lifting, will drive fixed pulley A4 rotation when pulling force rope A33 is mobile, to pass through biography Moving axis 10 drives the rotation of reel 12 to start turning transmission line 11, when terminating operation, due to the mobile drive of pulling force rope A33 Fixed pulley A4 is rotated backward, to drive reel 12 to rotate backward, so that transmission line 11 be made to pack up.
When second situation occurs, since mounting distance is higher, so using bottom hand can be opened after the device The device is integrally placed directly in ground to make bottom handle form stable triangle support frame by handle 18, rotation support rod 16 Or on external equipment, can start for transmission line 11 to be connected on external equipment later to acquire data, and in use due to The pulling force rope made using ultrahigh molecular weight polyethylene reduces the generation of accident, rises using protective cover to current sensor 26 Good protective effect is arrived, and protecting box 20 can be very good the transmission of protection data.
It is described above;It is merely preferred embodiments of the present invention;But scope of protection of the present invention is not limited thereto; Anyone skilled in the art is in the technical scope disclosed by the present invention;According to the technique and scheme of the present invention and its It improves design and is subject to equivalent substitution or change;It should be covered by the scope of protection of the present invention.

Claims (6)

1. a kind of transformer neutral point DC magnetic biasing current measuring instrument of hot line job, including basis arm (6), it is characterised in that: Basis arm (6) bottom end is connected with handle (18), and handle (18) inside left is connected with battery (19), the basis Arm (6) bottom is disposed with telescoping switch (15) and folding switch (17) from top to bottom, is socketed with above the basis arm (6) Two joint arms (7), two joint arm (7) top are socketed with three joint arms (8), are socketed with four joint arms (3) above the three joint arms (8), It is connected with compressed gas bar (1) in the middle part of basis arm (6) inner bottom, is socketed with mobile bar above the compressed gas bar (1) (9), mobile bar (9) top is connected with fixed pulley A(4), basis arm (6) the inner bottom middle part compressed gas bar (1) is left Side is connected with pulling force rope A(33), the pulling force rope A(33) connect around the fixed pulley A(4) other end and three joint arms (8) inner bottom Connect, three joint arms (8) the inner bottom pulling force rope A(33) right side is connected with fixed pulley B(32), four joint arms (3) bottom end connects It is connected to pulling force rope B(36), the pulling force rope B(36) it is connect around the fixed pulley B(32) other end and four joint arms (3) bottom end right side, Fixed pulley C(2 is connected on the right side of three joint arms (8) inner upper end), four joint arm (3) the bottom right top is connected with pulling force Restrict C(35), the pulling force rope C(35) it is connect around the fixed pulley C(2) other end and two joint arms (7) inner bottom right side, described two Fixed pulley D(5 is connected on the left of joint arm (7) bottom end), basis arm (6) the inner upper end left side is connected with pulling force rope D(34), institute State pulling force rope D(34) for the other end around connecting on the left of fixed pulley D(5) and three joint arms (8) bottom end, four joint arm (3) top is left Right two sides are connected with fixing axle (21), and the fixing axle (21) is socketed with rotating bar (14), connection above the rotating bar (14) Have static block (13), be connected with stepper motor (22) on the left of static block (13) lower inside, the stepper motor (22) is right Side is connected with rotation axis (31), and rotation spinner handle (30), rotation spinner handle (30) right side are connected on the right side of the rotation axis (31) Outside is socketed with rotation case (29), internal on the right side of the rotation spinner handle (30) to be socketed with revolute pair bar (28), the revolute pair It is connected with moving mass (27) on the right side of bar (28), static block (13) inner upper is connected with fixed link (25), the fixed link (25) it is socketed on rotate gear (23), energetically power spring (24), the strength power spring is socketed on the rotate gear (23) (24) other end is connect with one end on the left of rotation spinner handle (30), on the right side of the static block (13) on top and moving mass (27) left side Side is all connected with current sensor (26), and the battery (19) is electrically connected by telescoping switch (15) and compressed gas bar (1), The battery (19) is electrically connected by folding switch (17) and stepper motor (22).
2. a kind of transformer neutral point DC magnetic biasing current measuring instrument of hot line job according to claim 1, feature It is: the fixed pulley A(4) center is connected with transmission shaft (10) one end, and transmission shaft (10) other end is connected with volume Line wheel (12) is connected with transmission line (11) on the reel (12).
3. a kind of transformer neutral point DC magnetic biasing current measuring instrument of hot line job according to claim 1, feature It is: is provided with supported chamber (38) on the right side of the handle (18), the handle (18), which is located above supported chamber (38), is connected with rotation Shaft (37) is connected with support rod (16) on the rotary shaft (37).
4. a kind of transformer neutral point DC magnetic biasing current measuring instrument of hot line job according to claim 1, feature It is: is provided with protecting box (20) on the left of basis arm (6) bottom end, transmission line (11) other end runs through protecting box (20).
5. a kind of transformer neutral point DC magnetic biasing current measuring instrument of hot line job according to claim 1, feature Be: the pulling force rope A(33), pulling force rope B(36), pulling force rope C(35) and pulling force rope D(34) by ultrahigh molecular weight polyethylene It makes.
6. a kind of transformer neutral point DC magnetic biasing current measuring instrument of hot line job according to claim 1, feature It is: is provided with protective cover outside the current sensor (26).
CN201810496165.0A 2018-05-22 2018-05-22 A kind of transformer neutral point DC magnetic biasing current measuring instrument of hot line job Pending CN109884365A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810496165.0A CN109884365A (en) 2018-05-22 2018-05-22 A kind of transformer neutral point DC magnetic biasing current measuring instrument of hot line job

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810496165.0A CN109884365A (en) 2018-05-22 2018-05-22 A kind of transformer neutral point DC magnetic biasing current measuring instrument of hot line job

Publications (1)

Publication Number Publication Date
CN109884365A true CN109884365A (en) 2019-06-14

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Family Applications (1)

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CN201810496165.0A Pending CN109884365A (en) 2018-05-22 2018-05-22 A kind of transformer neutral point DC magnetic biasing current measuring instrument of hot line job

Country Status (1)

Country Link
CN (1) CN109884365A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204588619U (en) * 2015-04-29 2015-08-26 张爱峰 Novel fork mounting machine extendible arm
CN106405198A (en) * 2016-11-30 2017-02-15 国网江苏省电力公司连云港供电公司 Telescopic clip-on current detection device
US20170146575A1 (en) * 2015-11-23 2017-05-25 National Instruments Corporation Digitally Compensating for the Impact of Input Bias Current on Current Measurements
CN106771498A (en) * 2017-01-16 2017-05-31 吉林大学 Can wireless, passive, noncontact, the device and method of multi-thread measurement DC current

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204588619U (en) * 2015-04-29 2015-08-26 张爱峰 Novel fork mounting machine extendible arm
US20170146575A1 (en) * 2015-11-23 2017-05-25 National Instruments Corporation Digitally Compensating for the Impact of Input Bias Current on Current Measurements
CN106405198A (en) * 2016-11-30 2017-02-15 国网江苏省电力公司连云港供电公司 Telescopic clip-on current detection device
CN106771498A (en) * 2017-01-16 2017-05-31 吉林大学 Can wireless, passive, noncontact, the device and method of multi-thread measurement DC current

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Application publication date: 20190614