CN113533881A - A analogue means that is used for built on stilts aluminium conductors (cable) break fault of 10kV - Google Patents
A analogue means that is used for built on stilts aluminium conductors (cable) break fault of 10kV Download PDFInfo
- Publication number
- CN113533881A CN113533881A CN202110710668.5A CN202110710668A CN113533881A CN 113533881 A CN113533881 A CN 113533881A CN 202110710668 A CN202110710668 A CN 202110710668A CN 113533881 A CN113533881 A CN 113533881A
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- steel
- reinforced
- aluminum conductor
- overhead
- strand
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- 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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- 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
- G01R1/0416—Connectors, 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
Abstract
A simulation device for a broken wire fault of a 10kV overhead steel-cored aluminum strand comprises a base, a lifting assembly and a clamping assembly, wherein the lifting assembly is arranged on the base, and the clamping assembly is fixed to the top of the lifting assembly; the lifting component can control the lifting of the clamping component; the clamping assembly comprises an insulating cylinder, a conductive tube, a bolt and a pneumatic mechanism; the insulating cylinder is of a hollow structure with openings at two ends, and a conductive tube is fixedly connected to the inner wall of the insulating cylinder; a second steel-cored aluminum strand is fixed at one end of the inner side of the conductive pipe by a bolt; the other end of the inner side of the conductive pipe is fixedly provided with a first aluminum conductor steel-reinforced, and the pneumatic mechanism controls the connection and disconnection of the first aluminum conductor steel-reinforced and the first aluminum conductor steel-reinforced. The device has a simple structure and is convenient to use, and the device can be used for simulating the wire breakage fault of a 10kV overhead steel-cored aluminum strand, so that the same steel-cored aluminum strand can be used for multiple times, and the material is saved; the height of the lifting assembly control device can quickly realize clamping and breaking of the steel-cored aluminum strand, and the testing efficiency is improved.
Description
Technical Field
The invention relates to the technical field of line breakage fault simulation, in particular to a simulation device for a 10kV overhead steel-cored aluminum strand breakage fault.
Background
Overhead transmission lines are mostly in mountains and open fields, the terrain is severe, the line height fluctuation is large, the day and night temperature difference is large, and the like, and due to climatic factors, the steel-cored aluminum stranded wires can be broken. Ice coating and strong wind are two main reasons of wire breakage of the steel-cored aluminum strand. On one hand, due to the high humidity, icing is easy to occur when the temperature is lower than 0 ℃, and the wire is easy to break after icing. On the other hand, the steel-cored aluminum strand has larger sag and is easy to swing by wind, and for a long time, the steel-cored aluminum strand is fatigue at a bending part due to repeated bending in a place held by a wire clamp, and single strand breakage begins to occur and gradually develops to the wire breakage from an outer layer to an inner layer. After the steel-cored aluminum strand is broken in a single-strand mode, the effective area is reduced, the mechanical strength is reduced, the tensile force borne by each strand is increased, the development of broken wires is accelerated, and meanwhile, the current density of the unbroken wires is increased, so that the wires are heated due to overload, and finally the broken wires are caused. In the process of falling to the ground at high altitude, the steel-cored aluminum strand bounces on the ground for multiple times until the steel-cored aluminum strand stably lands.
The method is used for collecting the fault electrical quantity characteristics of the power system in the process of breaking, landing and bouncing of the 10kV overhead steel-cored aluminum strand and needing to test for many times. The broken wire fault simulation is usually to realize the broken wire or the connection state by artificially cutting or repairing the steel-cored aluminum strand, which easily causes the waste of the steel-cored aluminum strand, and meanwhile, frequent manual overhead operation is needed in the simulation process, the efficiency is low and the work risk coefficient is high.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a simulation device for the broken line fault of a 10kV overhead steel-cored aluminum strand, which has the advantage of conveniently simulating the broken line fault of a line. The invention provides the following technical scheme:
a simulation device for a broken wire fault of a 10kV overhead steel-cored aluminum strand comprises a base, a lifting assembly and a clamping assembly, wherein the lifting assembly is arranged on the base, and the clamping assembly is fixed to the top of the lifting assembly;
the lifting component can control the lifting of the clamping component;
the clamping assembly comprises an insulating cylinder, a conductive tube, a bolt and a pneumatic mechanism; the insulating cylinder is of a hollow structure with openings at two ends, and the inner wall of the insulating cylinder is fixedly connected with the conductive tube; a second steel-cored aluminum strand is fixed at one end of the inner side of the conductive pipe through a bolt; the other end of the inner side of the conductive pipe is fixedly provided with a first aluminum conductor steel-reinforced, and the pneumatic mechanism controls the connection and disconnection of the first aluminum conductor steel-reinforced and the first aluminum conductor steel-reinforced.
Preferably, the inner wall of the insulating cylinder is provided with two grooves which are symmetrically distributed.
Preferably, the pneumatic mechanism comprises a cylinder, a lantern ring, a connecting rod and an arc-shaped clamping plate, a movable plug of the cylinder is connected with the lantern ring, and the lantern ring is sleeved on the insulating cylinder and slides on the insulating cylinder; the arc splint are fixed in the current-conducting tube recess, the connecting rod is connected arc splint and lantern ring.
Preferably, a plurality of ball grooves which are uniformly distributed in an annular shape are formed in the inner ring of the lantern ring, matched balls are installed in the ball grooves, and one end, far away from the bottom of the ball groove, of each ball penetrates through a notch of each ball groove and extends outwards to be in rolling connection with the outer cylinder wall of the insulating cylinder.
Preferably, one side of the arc-shaped clamping plate, which is far away from the connecting rod, is fixedly connected with a matched anti-slip mat.
Preferably, a guide sleeve is arranged at the groove of the insulating cylinder.
Preferably, the first aluminum conductor cable reinforced steel strand and the second aluminum conductor cable reinforced steel strand have the same structure, and the cross sections of the first aluminum conductor cable reinforced steel strand and the second aluminum conductor cable reinforced steel strand are equal to the inner cross section of the conductive pipe.
Preferably, the base is laterally provided with an auxiliary bracket.
Preferably, the surface of the lifting component is covered with an insulating material.
Preferably, the two simulation devices for the broken line fault of the 10kV overhead steel-cored aluminum strand are used in cooperation.
Compared with the prior art, the simulation device for the broken line fault of the 10kV overhead steel-cored aluminum strand has the following beneficial effects:
a simulation device for a broken wire fault of a 10kV overhead steel-cored aluminum strand is provided with a base, a lifting assembly and a clamping assembly. The two devices are matched for use, and the 10kV overhead steel-cored aluminum strand disconnection fault is simulated. During second aluminium conductors steel reinforced inserts the conductive tube in the insulating cylinder among the centre gripping subassembly, the cooperation bolt conveniently carries out fixed connection, inserts the both ends of first aluminium conductors steel reinforced respectively in the conductive tube in the insulating cylinder of two devices, utilizes pneumatic mechanism to carry out the quick clamp to first aluminium conductors steel reinforced to realize first aluminium conductors steel reinforced and second aluminium conductors steel reinforced electric connection. The lifting assembly lifts the line to a proper height and then transmits power to the line, one of the pneumatic mechanisms is opened, the first steel-cored aluminum strand automatically falls to the ground under the action of gravity, and the 10kV overhead steel-cored aluminum strand disconnection fault can be quickly simulated. Lifting unit descends, makes things convenient for staff's building site face operation, and operation pneumatic mechanism presss from both sides tightly the both ends of first steel-cored aluminum strand wires once more, can realize broken string and repair. The device has a simple structure and is convenient to use, and the device can be used for simulating the wire breakage fault of a 10kV overhead steel-cored aluminum strand, so that the same steel-cored aluminum strand can be used for multiple times, and the material is saved; the height of the lifting assembly control device can quickly realize clamping and breaking of the steel-cored aluminum strand, and the testing efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of a simulation apparatus for a broken wire fault of a 10kV overhead aluminum conductor steel reinforced cable according to the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
fig. 3 is a schematic structural diagram of a connecting part of an arc-shaped clamping plate and a connecting rod in the simulation device for the wire breakage fault of the 10kV overhead steel-cored aluminum strand provided by the invention.
Shown in the figure: 1, a base; 2, a lifting component; 31 insulating cylinder, 311 groove, 32 conductive tube, 33 bolt, 341 cylinder, 342 lantern ring, 343 connecting rod, 344 arc clamping plate, 345 anti-skid pad and 35 guide sleeve; 4, a first steel-cored aluminum strand; and 5, a second aluminum conductor steel reinforced.
Detailed Description
The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.
The embodiments of the present disclosure are described below with specific examples, and other advantages and effects of the present disclosure will be readily apparent to those skilled in the art from the disclosure in the specification. It is to be understood that the described embodiments are merely illustrative of some, and not restrictive, of the embodiments of the disclosure. The disclosure may be embodied or carried out in various other specific embodiments, and various modifications and changes may be made in the details within the description without departing from the spirit of the disclosure. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
As shown in fig. 1-3, a simulation device for a broken wire fault of a 10kV overhead steel-cored aluminum strand comprises a base 1, a lifting assembly 2 on the base 1, and a clamping assembly fixed on the top of the lifting assembly 2. The two devices are matched for use, the distance between the two devices is about 10m, and the transverse tension generated by the aerial steel-cored aluminum stranded wire is large, so that the auxiliary support arranged on the side part of the base 1 meets the strength requirement. The lifting component 2 can control the lifting of the clamping component. When the device is used, 10kV high-voltage electricity needs to be conveyed, and the surface of the lifting component 2 is covered with an insulating material to meet the insulating requirement of 10kV grade. The clamping assembly includes an insulating cylinder 31, a conductive tube 32, a bolt 33, and a pneumatic mechanism. The insulating cylinder 31 is a hollow structure with two open ends, two grooves 311 are formed in the inner wall of the insulating cylinder 31, and the grooves 311 are symmetrically distributed. The inner wall of the insulating cylinder 31 is fixedly connected with a conductive tube 32, one end of the inner side of the conductive tube 32 is fixed with a second aluminum steel-cored strand 5 through a bolt 33, the other end of the inner side of the conductive tube 32 is fixed with a first aluminum steel-cored strand 4, and a pneumatic mechanism controls the connection and disconnection of the first aluminum steel-cored strand 4 and the first aluminum steel-cored strand 4.
The pneumatic mechanism comprises a cylinder 341, a collar 342, a connecting rod 343 and an arc-shaped clamping plate 344, wherein the movable plug of the cylinder 341 is connected with the collar 342, and the collar 342 is sleeved on the insulating cylinder 31 and slides on the insulating cylinder 31. An arc clamp 344 is secured within the recess 311 of the conductive tube 32 and a link 343 connects the arc clamp 344 with the collar 342. One side of the arc-shaped clamping plate 344, which is far away from the connecting rod 343, is fixedly connected with a matched non-slip mat 345, which not only facilitates protection of the first aluminum conductor steel reinforced 4, but also improves the stability of clamping the arc-shaped clamping plate 344. The groove 311 of the insulating cylinder 31 is provided with a guide sleeve 35, and a protective sleeve is arranged between the guide sleeve 35 and the connecting rod 343 to avoid sliding abrasion. In order to effectively reduce the friction force between the lantern ring 342 and the outer cylinder wall of the insulating cylinder 31, a plurality of ball grooves which are uniformly distributed in an annular shape are formed in the inner ring of the lantern ring 342, matched balls are installed in the ball grooves, and one end, far away from the bottom of the ball groove, of each ball penetrates through the notch of each ball groove and extends outwards to be connected with the outer cylinder wall of the insulating cylinder 31 in a rolling manner.
The first aluminum conductor cable steel reinforced 4 and the second aluminum conductor cable steel reinforced 5 have the same structure, and the cross sections of the first aluminum conductor cable steel reinforced 4 and the second aluminum conductor cable steel reinforced 5 are equal to the inner cross section of the conductive pipe 32. The first aluminum conductor steel reinforced 4 and the second aluminum conductor steel reinforced 5 can be electrically conducted when being inserted into the conductive pipe 32.
The following describes the process of use of the device of the invention:
(1) the heights of the two devices are reduced to the lowest point, the bolt 33 fixes the second aluminum steel reinforced stranded wire 5 in the conductive tube 32, and the two ends of the first aluminum steel reinforced stranded wire 4 are respectively fixed in the conductive tubes 32 of the two devices. The cylinder 341 is started to control the piston rod to extend, the sleeve ring 342 is driven to move along the insulating cylinder 31, the sleeve ring 342 drives the connecting rod 343, so that the connecting rod 343 moves along the guide sleeve 35 in the opposite direction, the connecting rod 343 drives the arc-shaped clamping plates 344 to move synchronously, and the two arc-shaped clamping plates 344 clamp the first steel-cored aluminum strand 4 quickly.
(2) And (5) lifting the device to the working height of the 10kV overhead steel-cored aluminum strand, and inputting 10kV voltage.
(3) The piston rod of one of the cylinders 341 is controlled to contract, so that the two arc-shaped clamping plates 344 can be controlled to move back and forth, the first aluminum conductor steel reinforced 4 can automatically fall off to the ground from one side under the action of gravity, and the wire breakage fault of the overhead aluminum conductor steel reinforced can be quickly simulated. And recording the fault electrical quantity characteristics of the power system in the falling and bouncing processes of the first steel-cored aluminum strand 4.
(4) And (3) repeating the steps 1-3, and controlling the piston rods of the two cylinders 341 to extend, so that the two ends of the first steel-cored aluminum strand 46 can be clamped again, and the broken wire repair is realized.
The device has a simple structure and is convenient to use, and the device can be used for simulating the wire breakage fault of a 10kV overhead steel-cored aluminum strand, so that the same steel-cored aluminum strand can be used for multiple times, and the material is saved; the lifting assembly 2 controls the height of the device, so that the steel-cored aluminum strand can be clamped and disconnected quickly, and the testing efficiency is improved.
In the description of the present invention, it is to be understood that the terms "intermediate", "length", "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer", "radial", "circumferential", and the like, indicate orientations and positional relationships that are based on the orientations and positional relationships shown in the drawings, are used for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the first feature may be "on" the second feature in direct contact with the second feature, or the first and second features may be in indirect contact via an intermediate. "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The above description is for the purpose of illustrating embodiments of the invention and is not intended to limit the invention, and it will be apparent to those skilled in the art that any modification, equivalent replacement, or improvement made without departing from the spirit and principle of the invention shall fall within the protection scope of the invention.
Claims (10)
1. A simulation device for a broken wire fault of a 10kV overhead steel-cored aluminum strand is characterized by comprising a base, a lifting assembly on the base and a clamping assembly fixed at the top of the lifting assembly;
the lifting component can control the lifting of the clamping component;
the clamping assembly comprises an insulating cylinder, a conductive tube, a bolt and a pneumatic mechanism; the insulating cylinder is of a hollow structure with openings at two ends, and the inner wall of the insulating cylinder is fixedly connected with the conductive tube; a second steel-cored aluminum strand is fixed at one end of the inner side of the conductive pipe through a bolt; the other end of the inner side of the conductive pipe is fixedly provided with a first aluminum conductor steel-reinforced, and the pneumatic mechanism controls the connection and disconnection of the first aluminum conductor steel-reinforced and the first aluminum conductor steel-reinforced.
2. The device for simulating the wire breakage fault of the 10kV overhead steel-cored aluminum strand as claimed in claim 1, wherein the inner wall of the insulating cylinder is provided with two grooves, and the grooves are symmetrically distributed.
3. The simulation device for the 10kV overhead aluminum conductor steel-cored wire breakage fault according to claim 1 or 2, wherein the pneumatic mechanism comprises a cylinder, a sleeve ring, a connecting rod and an arc-shaped clamping plate, a movable plug of the cylinder is connected with the sleeve ring, and the sleeve ring is sleeved on the insulating cylinder and slides on the insulating cylinder; the arc splint are fixed in the current-conducting tube recess, the connecting rod is connected arc splint and lantern ring.
4. The simulation device for the disconnection fault of the 10kV overhead steel-cored aluminum strand as claimed in claim 3, wherein the inner ring of the sleeve ring is provided with a plurality of ball grooves which are uniformly distributed in an annular shape, matched balls are installed in the ball grooves, and one ends of the balls, which are far away from the bottoms of the ball grooves, penetrate through the notches of the ball grooves and extend outwards to be in rolling connection with the outer cylinder wall of the insulation cylinder.
5. The simulation device for the 10kV overhead aluminum conductor steel-reinforced cable breakage fault according to claim 3, wherein a matched anti-slip pad is fixedly connected to one side of the arc-shaped clamping plate, which is far away from the connecting rod.
6. The simulation device for the 10kV overhead aluminum conductor steel-reinforced according to claim 2, wherein a guide sleeve is arranged at the groove of the insulation cylinder.
7. The simulation device for the 10kV overhead aluminum conductor steel-reinforced fault according to claim 1, wherein the first aluminum conductor steel-reinforced strand and the second aluminum conductor steel-reinforced strand have the same structure, and the cross section of the first aluminum conductor steel-reinforced strand and the cross section of the second aluminum conductor steel-reinforced strand are equal to the inner cross section of the conductive pipe.
8. The simulation device for the 10kV overhead aluminum conductor steel-reinforced fault of claim 1, wherein an auxiliary support is installed on the side of the base.
9. The simulation device for the 10kV overhead aluminum conductor steel-reinforced according to claim 1, wherein the surface of the lifting assembly is covered with an insulating material.
10. The simulation device for the broken wire fault of the 10kV overhead aluminum conductor steel-cored according to claim 1, wherein two simulation devices for the broken wire fault of the 10kV overhead aluminum conductor steel-cored are used in cooperation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110710668.5A CN113533881B (en) | 2021-06-25 | 2021-06-25 | A analogue means that is used for built on stilts aluminium conductors (cable) break fault of 10kV |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110710668.5A CN113533881B (en) | 2021-06-25 | 2021-06-25 | A analogue means that is used for built on stilts aluminium conductors (cable) break fault of 10kV |
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| CN113533881A true CN113533881A (en) | 2021-10-22 |
| CN113533881B CN113533881B (en) | 2022-11-18 |
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| CN113533881B (en) | 2022-11-18 |
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