CN115267438A - Device for measuring bar air gap pilot discharge current - Google Patents
Device for measuring bar air gap pilot discharge current Download PDFInfo
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- CN115267438A CN115267438A CN202111485445.XA CN202111485445A CN115267438A CN 115267438 A CN115267438 A CN 115267438A CN 202111485445 A CN202111485445 A CN 202111485445A CN 115267438 A CN115267438 A CN 115267438A
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- simulation electrode
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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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
Abstract
Disclosed is an apparatus for measuring a wand air gap pilot discharge current, comprising: a ground plate; the measuring unit is arranged on the grounding plate and comprises an insulating base, a first bar simulation electrode, a second bar simulation electrode and a measuring piece, wherein the first bar simulation electrode is arranged on the insulating base, the second bar simulation electrode is positioned above the first bar simulation electrode at a preset distance, the measuring piece is electrically connected with the first bar simulation electrode, and the measuring piece is extruded on the base through the first bar simulation electrode; and the voltage measuring instrument is arranged on the grounding plate and is electrically connected with the measuring part. This a device for measuring stick air gap guide discharge current, the convenient high efficiency of use, can be accurate measure stick air gap guide discharge current to bar selection material in the electrical equipment facility provides effective foundation.
Description
Technical Field
The invention relates to the technical field of electric power, in particular to a device for measuring a bar air gap pilot discharge current.
Background
The air gap discharge mechanism research is a basic research in the field of high-voltage electrician, and the air gap discharge current and the discharge mechanism are closely related. Aiming at the rod air gap, the change of the discharge current is researched, so that the deep research on the physical process of the rod air gap discharge is facilitated.
The existing measurement device for the rod air gap discharge is inconvenient to measure, has large measurement error, and is difficult to form effective reference basis for measurement data.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a device for measuring a rod air gap pilot discharge current, which is convenient and efficient to use and can accurately measure the rod air gap pilot discharge current, so as to solve the problems in the prior art.
According to the present invention there is provided an apparatus for measuring a rod air gap pilot discharge current, comprising:
a ground plate;
the measuring unit is arranged on the grounding plate and comprises an insulating base, a first bar simulation electrode, a second bar simulation electrode and a measuring piece, wherein the first bar simulation electrode is arranged on the insulating base, the second bar simulation electrode is positioned above the first bar simulation electrode at a preset distance, the measuring piece is electrically connected with the first bar simulation electrode, and the measuring piece is extruded on the base through the first bar simulation electrode;
and the voltage measuring instrument is arranged on the grounding plate and is electrically connected with the measuring part.
Preferably, a stepped hole is formed in the insulating base, and the stepped hole comprises a first hole and a second hole which are communicated in sequence;
wherein the first hole is located above the second hole, and the diameter of the first hole is larger than that of the second hole.
Preferably, the lower end of the first bar simulation electrode is screwed in the first hole,
form the joint space between the lower extreme terminal surface of first rod microelectrode and the bottom surface in first hole, the upper end joint of measuring part in the joint space, the lower extreme of measuring part hold in the second is downthehole.
Preferably, the measuring member comprises a first conductive disc, a second conductive disc, a plurality of resistance rods, a conductive wire and a plug;
the first conductive disc and the second conductive disc are arranged in parallel at a preset distance, a first end of the conductive wire is connected to the first conductive disc, and a second end of the conductive wire penetrates through the second conductive disc and is exposed out of the second conductive disc;
the conductive rods are arranged around the conductive wires, the first ends of the conductive rods are connected to the first conductive disc, and the second ends of the conductive rods are connected to the second conductive disc;
the plug is provided with a plurality of plug pins, the plug pins are inserted on the second conductive disc, and the second ends of the conductive wires are connected with the wire cores of the plug.
Preferably, a plurality of the resistance rods and the conductive wires are electrically connected through the first conductive pad.
Preferably, the second conductive disc is a circuit board, and an annular conductive path and a plurality of conductive branches are arranged on the circuit board;
wherein the first ends of the plurality of conductive branches are respectively connected with the annular conductive path.
Preferably, the annular conductive path is provided with a plurality of fixing holes, the fixing holes are used for penetration of a resistance rod of the measuring piece, the second ends of the plurality of conductive branches are all provided with the insertion holes, and the insertion holes are used for insertion of the pins.
Preferably, a first end of the resistance rod is fixed to the first conductive disc through a nut, and a second end of the resistance rod is fixed to the second conductive disc through a nut.
Preferably, the test piece further comprises a grounding lead, and the grounding lead is electrically connected with the grounding plate.
Preferably, the voltage measuring device further comprises a shielding box, wherein the shielding box is arranged on the grounding plate and covers the voltage measuring instrument.
Has the advantages that:
the device for measuring the rod air gap pilot discharge current in the application is convenient and efficient to use, and can accurately measure the rod air gap pilot discharge current, so that an effective basis is provided for rod material selection in power equipment facilities.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings.
Fig. 1-2 show a schematic structural view of an apparatus for measuring a rod air gap pilot discharge current according to an embodiment of the present invention from different perspectives.
Fig. 3 shows a schematic structural view of a measuring member according to an embodiment of the present invention.
Fig. 4 shows a schematic structural view of a first conductive disc of a measuring member according to an embodiment of the invention.
Fig. 5 shows a schematic structural view of a second conductive disc of the measuring member according to an embodiment of the invention.
Fig. 6 shows a top view of an insulating base according to an embodiment of the invention.
Fig. 7 shows a cross-sectional view of an insulating base according to an embodiment of the invention.
Fig. 8 illustrates a bottom view of an insulating base according to an embodiment of the present invention.
Fig. 9 shows a bottom view of a first bar simulation electrode according to an embodiment of the invention.
In the figure: the measuring device comprises a grounding plate 1, a measuring unit 2, an insulating base 21, a stepped hole 211, a cable groove 212, a first bar-shaped analog electrode 22, a second bar-shaped analog electrode 23, a measuring piece 24, a first conductive disc 241, a second conductive disc 242, an annular conductive path 2421, a fixing hole 2422, a jack 2423, a resistance bar 243, a conductive wire 244, a plug 245, a grounding lead 246, a voltage measuring instrument 3, a shielding box 4, a lead-out wire 5 and an optical fiber 6.
Detailed Description
Various embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Like elements in the various figures are denoted by the same or similar reference numerals. For purposes of clarity, the various features in the drawings are not necessarily drawn to scale.
The invention provides a device for measuring a rod air gap pilot discharge current, which comprises a grounding plate 1, a measuring unit 2 and a voltage measuring instrument 3, wherein the measuring unit 2 is arranged on the grounding plate 1 and comprises an insulating base 21, a first rod simulation electrode 22, a second rod simulation electrode 23 and a measuring piece 24, the first rod simulation electrode 22 is arranged on the insulating base 21, the second rod simulation electrode 23 is positioned at a preset distance above the first rod simulation electrode 22, the measuring piece 24 is electrically connected with the first rod simulation electrode 22, and the measuring piece 24 is extruded on the base through the first rod simulation electrode 22; the voltage measuring instrument 3 is arranged on the grounding plate 1 and is electrically connected with the measuring piece 24.
The grounding plate 1 is made of metal materials, such as copper or steel plates and the like, and has a conductive function, and the grounding plate 1 is used for connecting a grounding device of a test field so as to realize grounding of the device for measuring the rod air gap pilot discharge current.
In this embodiment, the first bar simulation electrode 22 and the second bar simulation electrode 23 are used for simulating bars in electric equipment or electric power lines, and the insulation level of the bars is measured by measuring the pilot discharge current between the bars, so as to select a proper bar material.
A stepped hole 211 is formed in the insulating base 21, and the stepped hole 211 comprises a first hole and a second hole which are sequentially communicated; wherein the first hole is positioned above the second hole, and the diameter of the first hole is larger than that of the second hole. The peripheral wall of the first hole is provided with internal threads. Further, the bottom of the absolute base is provided with a cable slot 212 for the conductive wire 244 to pass through.
The measuring member 24 includes a first electrically conductive disc 241, a second electrically conductive disc 242, a plurality of resistive rods 243, electrically conductive filaments 244, and a plug 245; the first conductive pad 241 and the second conductive pad 242 are spaced apart from each other by a predetermined distance and are arranged in parallel, a first end of the conductive filament 244 is connected to the first conductive pad 241, and a second end of the conductive filament 244 penetrates through and is exposed out of the second conductive pad 242; a plurality of conductive rods are arranged around the conductive wire 244, the first ends of the conductive rods are connected to the first conductive plate 241, and the second ends of the conductive rods are connected to the second conductive plate 242; the plug 245 has a plurality of pins, the plurality of pins are inserted on the second conductive disc 242, and the second end of the conductive wire 244 is connected with the wire core of the plug 245.
In this embodiment, the first end of the conductive filament 244 passes through the opening of the first conductive pad 241, the tip of the first end is fixed to the first conductive pad 241 through solder, the first ends of the plurality of resistive rods 243 pass through the first conductive pad 241, and the first ends of the resistive rods 243 are fixed to the first conductive pad 241 through nuts. In this way, the plurality of resistive rods 243 and the conductive wires 244 are electrically connected through the first conductive pad 241, so that an equipotential is achieved between the first ends of the plurality of resistive rods 243 and the first ends of the conductive wires 244. The conductive wire 244 is specifically selected to be a metal wire having a conductive ability, such as a copper wire. The lower peripheral wall of the first rod simulation electrode 22 is provided with an external thread, and the first rod simulation electrode 22 is screwed to the internal thread of the first hole through the external thread. The periphery of the first conductive plate 241 is pressed on the bottom surface of the first hole through the bottom of the first rod analog electrode 22, so that the measurement unit 2 is fixed, and the first rod analog electrode 22 is electrically connected with the measurement unit 2.
The second conductive pad 242 is a circuit board, specifically a printed circuit board, on which a circular conductive path 2421 and a plurality of conductive branches are disposed, wherein first ends of the plurality of conductive branches are respectively connected to the circular conductive path 2421. The annular conductive path 2421 is provided with a plurality of fixing holes 2422, the fixing holes 2422 are used for penetrating the resistance rods 243 of the measuring element 24, the second end of each resistance rod 243 penetrates through the corresponding fixing hole 2422 and is fixedly connected to the second conductive disc 242 through a nut, so that the electrical connection between the resistance rod 243 and the annular conductive path 2421 is realized, the second ends of the plurality of conductive branches are respectively provided with a jack 2423, and the jacks 2423 are used for inserting pins.
In this embodiment, the number of the resistive rods 243 is four, the plug 245 is a BNC plug 245, and the plug has four pins, a circular conductive path 2421, and a plurality of conductive branches printed on the surface of the second conductive pad 242 away from the first conductive pad 241, and the conductive filament 244 passes through the hole on the second conductive pad 242 and is connected with the core of the plug 245. In this way, an equipotential between the second end of each resistive rod 243 and the conductive filament 244 is achieved.
The test piece further includes a grounding lead 246, and the grounding lead 246 is fixedly connected to the second conductive pad 242 through a nut and electrically connected to the grounding plate 1.
Further, the device for measuring the rod air gap pilot discharge current further comprises a shielding box 4, wherein the shielding box 4 is arranged on the grounding plate 1 and covers the voltage measuring instrument 3. The outgoing line 5 of the plug 245 is electrically connected to the voltage measuring instrument 3 through the shielding case 4, so as to transmit the data measured by the measuring unit 2 to the voltage measuring instrument 3, in this embodiment, the outgoing line 5 of the plug 245 is a coaxial signal cable.
In addition, the voltage measuring instrument 3 is also provided with an optical fiber 6 for transmitting the voltage data obtained by the voltage measuring instrument 3 to data processing equipment, such as a computer, and calculating the rod air gap pilot discharge current according to the voltage value and the resistance value of the test piece by the computer.
When the device for measuring the air gap pilot discharge current of the rod is used, the following use methods can be referenced:
1. connecting the grounding plate 1 with a test field grounding device to realize grounding of the grounding plate 1;
2. placing the insulating base 21 and the shielding box 4 on the grounding plate 1, and placing the outgoing line 5 of the plug 245 in a cable groove of the insulating base 21;
3. assembling the test piece of the measuring unit 2;
4. connecting a grounding lead 246 of the test piece with the grounding plate 1, and connecting a plug 245 with a coaxial signal cable;
5. placing the test piece into the through hole on the insulating base 21;
6. screwing the first bar simulation electrode 22 into the through hole of the absolute limit base, and pressing and connecting a first conductive disc 241 of the test piece;
7. connecting the outgoing line 5 of the plug 245 and the optical fiber 6 to the voltage measuring instrument 3 in the metal box;
8. hoisting a second bar simulation electrode 23 right above the lower metal electrode, and adjusting the air gap distance;
9. the second bar material analog electrode 23 is connected with a voltage generator to carry out an air gap discharge test, the voltage measuring instrument 3 receives and records a measured voltage signal, converts the voltage signal from analog quantity to a digital quantity signal, then transmits the digital quantity signal to an external information processing terminal through the optical fiber 6, and collects the voltage signal transmitted from the optical fiber 6 through an external information processing terminal device, so that a transient discharge current signal is obtained.
The device for measuring the rod air gap pilot discharge current in the application is convenient and efficient to use, and can accurately measure the rod air gap pilot discharge current, so that an effective basis is provided for rod material selection in power equipment facilities.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Finally, it should be noted that: although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (10)
1. An apparatus for measuring a wand air gap pilot discharge current, comprising:
a ground plate;
the measuring unit is arranged on the grounding plate and comprises an insulating base, a first bar simulation electrode, a second bar simulation electrode and a measuring piece, wherein the first bar simulation electrode is arranged on the insulating base, the second bar simulation electrode is positioned above the first bar simulation electrode at a preset distance, the measuring piece is electrically connected with the first bar simulation electrode, and the measuring piece is extruded on the base through the first bar simulation electrode;
and the voltage measuring instrument is arranged on the grounding plate and is electrically connected with the measuring part.
2. The apparatus according to claim 1, wherein the insulating base is provided with a step hole, and the step hole comprises a first hole and a second hole which are communicated in sequence;
wherein the first hole is located above the second hole, and the diameter of the first hole is larger than that of the second hole.
3. The apparatus of claim 2, wherein the lower end of the first rod simulation electrode is screwed into the first hole,
form the joint space between the lower extreme terminal surface of first rod microelectrode and the bottom surface in first hole, the upper end joint of measuring part in the joint space, the lower extreme of measuring part hold in the second is downthehole.
4. The apparatus of claim 1, wherein the measuring member comprises a first conductive disc, a second conductive disc, a plurality of resistive rods, conductive filaments, and a plug;
the first conductive disc and the second conductive disc are arranged in parallel at a preset distance, a first end of the conductive wire is connected to the first conductive disc, and a second end of the conductive wire penetrates through the second conductive disc and is exposed out of the second conductive disc;
the conductive rods are arranged around the conductive wires, the first ends of the conductive rods are connected to the first conductive disc, and the second ends of the conductive rods are connected to the second conductive disc;
the plug is provided with a plurality of plug pins, the plug pins are inserted on the second conductive disc, and the second ends of the conductive wires are connected with the wire cores of the plug.
5. The apparatus of claim 4, wherein a plurality of said resistive rods and conductive filaments are electrically connected via said first conductive pad.
6. The apparatus according to claim 4 or 5, wherein the second conductive plate is a circuit board on which a circular conductive path is disposed, and a plurality of conductive branches;
wherein the first ends of the plurality of conductive branches are respectively connected with the annular conductive path.
7. The apparatus according to claim 6, wherein the annular conductive path is provided with a plurality of fixing holes for inserting the resistor rod of the measuring member, and the second ends of the plurality of conductive branches are provided with the insertion holes for inserting the pins.
8. The apparatus of claim 4, wherein a first end of the resistor rod is secured to the first conductive pad via a nut and a second end of the resistor rod is secured to the second conductive pad via a nut.
9. The apparatus of claim 4, wherein the test piece further comprises a ground lead electrically connected to the ground plate.
10. The apparatus of claim 4, further comprising a shield box disposed on the ground plate and housing the voltage measurement instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111485445.XA CN115267438A (en) | 2021-12-07 | 2021-12-07 | Device for measuring bar air gap pilot discharge current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111485445.XA CN115267438A (en) | 2021-12-07 | 2021-12-07 | Device for measuring bar air gap pilot discharge current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115267438A true CN115267438A (en) | 2022-11-01 |
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ID=83758761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111485445.XA Pending CN115267438A (en) | 2021-12-07 | 2021-12-07 | Device for measuring bar air gap pilot discharge current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115267438A (en) |
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2021
- 2021-12-07 CN CN202111485445.XA patent/CN115267438A/en active Pending
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