CN114002504B - Measuring device for impedance of basin-type insulator surface discharge channel - Google Patents
Measuring device for impedance of basin-type insulator surface discharge channel Download PDFInfo
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- CN114002504B CN114002504B CN202111320283.4A CN202111320283A CN114002504B CN 114002504 B CN114002504 B CN 114002504B CN 202111320283 A CN202111320283 A CN 202111320283A CN 114002504 B CN114002504 B CN 114002504B
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- 239000012212 insulator Substances 0.000 title claims abstract description 64
- 239000000523 sample Substances 0.000 claims abstract description 8
- 238000002847 impedance measurement Methods 0.000 claims description 15
- 238000005259 measurement Methods 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 5
- 230000007246 mechanism Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000002679 ablation Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
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- 230000007774 longterm Effects 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/08—Measuring resistance by measuring both voltage and current
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Abstract
The invention discloses a measuring device for the impedance of a surface discharge channel of a basin-type insulator, wherein in the measuring device for the impedance of the surface discharge channel of the basin-type insulator, an impedance measuring module is connected with different positions of the surface discharge channel of the basin-type insulator, the impedance measuring module comprises a voltage measuring probe for measuring a voltage value of the position and a current sensor for measuring a current value of the position, a data acquisition module is connected with the impedance measuring module to acquire the voltage value and the current value of the different positions, a single chip microcomputer module is connected with the data acquisition module, the impedance values of the different positions are generated based on the voltage value and the current value of the different positions, and a computer is connected with the single chip microcomputer module to process and display the voltage value, the current value and/or the impedance value of the different positions.
Description
Technical Field
The invention relates to the technical field of high-voltage tests, in particular to a measuring device for the impedance of a creeping discharge channel of a basin-type insulator.
Background
The basin-type insulator serves as one of the core components of the GIS/GIL, and serves as a supporting conductor, an isolating air chamber and electrical insulation. Statistical analysis shows that the basin-type insulator occupies a considerable proportion in GIS faults, is the weakest insulating link in GIS, and the occurrence of the basin-type insulator causes the distribution of GIS electric fields to be distorted, especially at three joints.
In recent 20 years, scholars at home and abroad conduct a great deal of researches on the physical mechanism of the flashover of the basin-type insulator, and provide many innovative insights and theoretical guidance for the structural design of the basin-type insulator and the GIS/GIL. A scholars Zhang Liangen researches the surface flashover mechanism of the GIS insulator under long-term pressure resistance, and adopts an experimental method to explain the flashover process of the insulator induced by the metal particles; the scholars Li Ruihai calculate the insulation performance of the basin-type insulator by adopting a numerical simulation method; the scholars Ge Fan studied the effect of charge accumulation on insulator flashovers using a finite element simulation method.
However, few people study the surface discharge mechanism of the basin-type insulator by measuring the flashover discharge channel impedance of the surface of the insulator, it is therefore desirable to devise a means for measuring the impedance of the creeping discharge path of a creeping discharge for a basin-type insulator to assist those skilled in the art in further understanding the creeping discharge mechanism of a basin-type insulator.
The above information disclosed in the background section is only for enhancement of understanding of the background of the invention and therefore may contain information that does not form the prior art that is already known to a person of ordinary skill in the art.
Disclosure of Invention
The invention aims to provide a measuring device for the impedance of a surface discharge channel of a basin-type insulator, which can accurately and rapidly obtain the impedance of different positions of the surface discharge channel of the basin-type insulator, and the physical mechanism of the flashover of the basin-type insulator is analyzed to provide data support.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention relates to a measuring device for the impedance of a creeping discharge channel of a basin-type insulator,
an impedance measurement module connected with different positions of the basin-type insulator creeping discharge channel, the impedance measurement module comprises a voltage measurement probe for measuring a voltage value of the position and a current sensor for measuring a current value of the position,
a data acquisition module connected with the impedance measurement module for acquiring voltage values and current values at different positions,
the singlechip module is connected with the data acquisition module and generates impedance values at different positions based on the voltage values and the current values at different positions,
and the computer is connected with the singlechip module and is used for processing and displaying voltage values, current values and/or impedance values at different positions.
In the measuring device of the impedance of the basin-type insulator creeping discharge channel, the data acquisition module comprises an analog-to-digital converter.
In the measuring device for the impedance of the basin-type insulator creeping discharge channel, the singlechip module comprises an STM32 chip and a control circuit.
In the measuring device for the impedance of the creeping discharge channel of the basin-type insulator, the computer comprises a curve generating unit for generating impedance values at different positions.
In the measuring device for the impedance of the surface discharge channel of the basin-type insulator, the computer comprises a display screen.
In the measuring device for the impedance of the surface discharge channel of the basin-type insulator, the display screen comprises a liquid crystal screen or a touch screen.
In the measuring device for the impedance of the surface discharge channel of the basin-type insulator, the impedance measuring module comprises a position sensor for positioning.
In the measuring device for the impedance of the basin-type insulator creeping discharge channel, the voltage measuring probe and the current sensor are respectively provided with a fixing unit fixed on the basin-type insulator creeping discharge channel.
In the measuring device of the impedance of the creeping discharge channel of the basin-type insulator, the fixing unit comprises a clamping piece.
In the measuring device for the impedance of the surface discharge channel of the basin-type insulator, the clamping piece comprises a clamping piece.
In the technical scheme, the measuring device for the impedance of the creeping discharge channel of the basin-type insulator has the following beneficial effects: in the measuring device for the impedance of the creeping discharge channel of the basin-type insulator, the impedance of each position of the discharge channel can be measured rapidly and accurately, and the measuring device has the characteristics of simple structure and convenience in use, and can better understand the creeping discharge mechanism of the creeping discharge channel of the basin-type insulator.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.
FIG. 1 is a schematic diagram of one embodiment of a device for measuring the impedance of a creeping discharge path of a tray insulator.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 of the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In order to make the technical scheme of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.
In one embodiment, as shown in fig. 1, the measuring means of the impedance of the creeping discharge path of the tray insulator comprises,
an impedance measurement module connected with different positions of the basin-type insulator creeping discharge channel, the impedance measurement module comprising a voltage measurement probe 4 for measuring a voltage value of a position and a current sensor 3 for measuring a current value of the position,
a data acquisition module 2 connected with the impedance measurement module for acquiring voltage values and current values at different positions,
the singlechip module 1 is connected with the data acquisition module 2 and generates impedance values at different positions based on the voltage values and the current values at different positions,
and the computer 5 is connected with the singlechip module 1, and the computer 5 processes and displays voltage values, current values and/or impedance values at different positions.
In the preferred embodiment of the device for measuring the impedance of the creeping discharge channel of the basin-type insulator, the data acquisition module 2 comprises an analog-to-digital converter.
In the preferred embodiment of the device for measuring the impedance of the surface discharge channel of the basin-type insulator, the singlechip module 1 comprises an STM32 chip and a control circuit.
In a preferred embodiment of the apparatus for measuring impedance of a creeping discharge channel of a tray insulator, the computer 5 includes a curve generating unit for generating impedance values at different positions.
In a preferred embodiment of the apparatus for measuring the impedance of the creeping discharge channel of the basin-type insulator, the computer 5 comprises a display screen.
In a preferred embodiment of the device for measuring the impedance of the creeping discharge channel of the basin-type insulator, the display screen comprises a liquid crystal screen or a touch screen.
In a preferred embodiment of the apparatus for measuring impedance of a creeping discharge channel of a tray insulator, the impedance measuring module includes a position sensor for positioning.
In the preferred embodiment of the device for measuring the impedance of the creeping discharge channel of the basin-type insulator, the voltage measuring probe 4 and the current sensor 3 are respectively provided with a fixing unit which is fixed on the basin-type insulator creeping discharge channel.
In a preferred embodiment of the device for measuring the impedance of the creeping discharge channel of the basin-shaped insulator, the fixing unit comprises a clamping member.
In a preferred embodiment of the device for measuring the impedance of the creeping discharge channel of the basin-type insulator, the clamping member comprises a clamping member.
In one embodiment, the device comprises an impedance measurement module, a singlechip module 1 and a data acquisition module 2. The impedance measurement module is connected with the data acquisition module 2, the data acquisition module 2 is connected with the single-chip microcomputer module 1, and the single-chip microcomputer module 1 is connected with the computer 5. Preferably, the impedance measuring module comprises a current sensor 3 and a voltage measuring probe 4. The impedance measurement module is applied to different positions of the discharge channel to measure voltage and current. Preferably, the data acquisition module 2 is configured to acquire measured voltage and current data, and includes an analog-to-digital converter. Preferably, the singlechip module 1 comprises an STM32 chip and a control circuit. The single-chip microcomputer module 1 is used for collecting voltage and current data obtained through measurement, and the single-chip microcomputer module 1 is connected with the computer 5 to process the collected data.
In one embodiment, the measuring device comprises a marking module marking the creeping discharge channel, which marks the discharge channel and is connected to the fixing unit such that the impedance measuring module is positioned at a desired position.
In one embodiment, the marking module has a grid cell that grids the discharge channels.
In one embodiment, taking a basin-type insulator with a surface flashover as an example, the surface of the basin-type insulator is provided with ablation marks, and the impedance measuring device is adopted to measure the impedance of each position of the discharge path. The impedance measurement module is applied to different positions of the discharge channel to measure voltage and current, the magnitude of the voltage measurement value is 10V, the magnitude of the current measurement value is mA, and the measurement data are shown in Table 1. In one embodiment, the marking module divides the discharge channel into 100 grid cells, wherein the current values of 8 grid points are respectively 1.030mA, 1.067mA, 1.203mA, 1.118mA, 0.998mA, 1.056mA, 1.043mA, and the voltage measured values are respectively 63.5V, 56.8V, 57.6V, 62.1V, 64.3V, 59.2V, 52.1V, 62.9V.
The impedance measurement module is applied to different positions of the discharge channel to measure voltage and current. The data acquisition module is used for acquiring voltage and current data obtained through measurement. The single-chip microcomputer module is used for collecting voltage and current data obtained through measurement, and the single-chip microcomputer module is connected with the computer to process the collected data. The discharge channel impedance measuring device provided by the invention can be used for rapidly and accurately measuring the impedance of each position of the discharge channel, and has the advantages of simple structure and convenience in use.
Industrial applicability
The measuring device for the impedance of the creeping discharge channel of the basin-type insulator can be used in the basin-type insulator.
Finally, it should be noted that: the described embodiments are intended to be illustrative of only some, but not all, of the embodiments disclosed herein and, based on the embodiments disclosed herein, all other embodiments that may be made by those skilled in the art without the benefit of the teachings herein are intended to be within the scope of this application.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the invention, which is defined by the appended claims.
Claims (8)
1. A measuring device for the impedance of a creeping discharge channel of a basin-type insulator is characterized by comprising,
an impedance measurement module connected with different positions of the basin-type insulator creeping discharge channel, the impedance measurement module comprises a voltage measurement probe for measuring a voltage value of the position and a current sensor for measuring a current value of the position,
a data acquisition module connected with the impedance measurement module for acquiring voltage values and current values at different positions,
the singlechip module is connected with the data acquisition module and generates impedance values at different positions based on the voltage values and the current values at different positions,
the computer is connected with the singlechip module and is used for processing and displaying voltage values, current values and impedance values at different positions;
wherein,,
the impedance measurement module includes a position sensor for positioning;
the voltage measuring probe and the current sensor are respectively provided with a fixing unit which is fixed on the basin-type insulator creeping discharge channel;
the measuring device further comprises a marking module marking the creeping discharge channel, which marks the discharge channel and is connected with the fixing unit, so that the impedance measuring module is positioned at a desired position;
the marking module has a grid cell that grids the discharge channel.
2. The apparatus for measuring the impedance of a creeping discharge path of a tray insulator according to claim 1, wherein the data acquisition module comprises an analog-to-digital converter.
3. The device for measuring the impedance of the creeping discharge channel of the basin-type insulator according to claim 2, wherein the single-chip microcomputer module comprises an STM32 chip and a control circuit.
4. The apparatus for measuring the impedance of a creeping discharge path of a tray insulator according to claim 1, wherein the computer comprises a curve generating unit for generating impedance values at different positions.
5. The apparatus for measuring the impedance of a creeping discharge path of a tray insulator according to claim 1, wherein the computer comprises a display screen.
6. The apparatus for measuring the impedance of a creeping discharge path of a tray insulator according to claim 5, wherein the display comprises a touch screen.
7. The apparatus for measuring the impedance of a creeping discharge path of a tray insulator according to claim 1, wherein the fixing unit comprises a holder.
8. The apparatus for measuring the impedance of a creeping discharge path of a tray insulator according to claim 7, wherein the holding member comprises a snap-fit member.
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| CN202111320283.4A CN114002504B (en) | 2021-11-09 | 2021-11-09 | Measuring device for impedance of basin-type insulator surface discharge channel |
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| CN202111320283.4A CN114002504B (en) | 2021-11-09 | 2021-11-09 | Measuring device for impedance of basin-type insulator surface discharge channel |
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