CN108761294B - Corona discharge positioning device and positioning unmanned aerial vehicle - Google Patents
Corona discharge positioning device and positioning unmanned aerial vehicle Download PDFInfo
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- CN108761294B CN108761294B CN201810934183.2A CN201810934183A CN108761294B CN 108761294 B CN108761294 B CN 108761294B CN 201810934183 A CN201810934183 A CN 201810934183A CN 108761294 B CN108761294 B CN 108761294B
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- 238000004891 communication Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
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- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
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Classifications
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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
- G01R31/1227—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 of components, parts or materials
- G01R31/1263—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 of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1272—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 of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C39/00—Aircraft not otherwise provided for
- B64C39/02—Aircraft not otherwise provided for characterised by special use
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- Aviation & Aerospace Engineering (AREA)
- Testing Relating To Insulation (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The invention provides a positioning device for corona discharge and a positioning unmanned aerial vehicle, which relate to the technical field of operation monitoring and measurement of an electric power system and comprise an array antenna sensor, a switch switching circuit and a processor which are sequentially connected, wherein the array antenna sensor comprises a plurality of antenna coils which are arranged at equal intervals; the array antenna sensor is used for detecting electromagnetic pulse signals generated by corona discharge; the switch switching circuit is used for matching and recording electromagnetic pulse signals with different intensities by circularly switching the serial numbers of the antenna coils; and the processor is used for amplifying and analyzing the electromagnetic pulse signals and determining corona discharge positions on the power transmission line by combining the serial numbers of the antenna coils. The invention can improve the positioning efficiency and accuracy of the corona discharge position of the power transmission line.
Description
Technical Field
The invention relates to the technical field of operation monitoring and measurement of power systems, in particular to a positioning device for corona discharge and a positioning unmanned aerial vehicle.
Background
Corona discharge is a discharge phenomenon that occurs due to ionization of air caused by a high electric field intensity at the surface of a wire. The corona discharge generates high-frequency pulse current, electromagnetic interference is caused to radio communication, chemical reaction can be caused to air, damage or corrosion is caused to a solid medium and a metal electrode, ageing of a composite insulator is accelerated, energy loss is generated, and the like.
Corona discharge is a focus of attention in electrical power systems. The primary problem to be solved is to determine the occurrence position of corona discharge.
Disclosure of Invention
Therefore, the invention aims to provide a positioning device for corona discharge and a positioning unmanned aerial vehicle so as to improve the positioning efficiency and accuracy of the corona discharge position of a power transmission line.
In a first aspect, an embodiment of the present invention provides a positioning device for corona discharge, where the positioning device includes an array antenna sensor, a switch switching circuit and a processor that are sequentially connected, where the array antenna sensor includes a plurality of antenna coils arranged at equal intervals;
the array antenna sensor is used for detecting electromagnetic pulse signals generated by corona discharge;
the switch switching circuit is used for carrying out matching record on the electromagnetic pulse signals with different intensities by circularly switching the serial numbers of the antenna coils;
and the processor is used for amplifying and analyzing the electromagnetic pulse signals and determining corona discharge positions on the power transmission line by combining the serial numbers of the antenna coils.
With reference to the first aspect, an embodiment of the present invention provides a first possible implementation manner of the first aspect, where the processor includes a preamplifier and a signal processing circuit, where the signal processing circuit is connected to the switch switching circuit through the preamplifier;
the preamplifier is used for amplifying the electromagnetic pulse signal to obtain an enhanced electromagnetic pulse signal;
the signal processing circuit is used for comparing and analyzing different enhanced electromagnetic pulse signals and determining the corona discharge position according to the signal intensity and the serial number of the antenna coil.
With reference to the first aspect, the embodiment of the present invention provides a second possible implementation manner of the first aspect, where the array antenna sensor further includes an arc structure;
and a plurality of antenna coils are arranged at equal intervals along the cambered surface appearance of the cambered structure.
With reference to the second possible implementation manner of the first aspect, the embodiment of the present invention provides a third possible implementation manner of the first aspect, wherein each of the antenna coils is perpendicular to the arc-shaped structure.
With reference to the second possible implementation manner of the first aspect, an embodiment of the present invention provides a fourth possible implementation manner of the first aspect, where the antenna coil is a spiral structure.
With reference to the first aspect, an embodiment of the present invention provides a fifth possible implementation manner of the first aspect, where the number of antenna coils is at least four.
With reference to the second possible implementation manner of the first aspect, an embodiment of the present invention provides a sixth possible implementation manner of the first aspect, where the camera further includes a camera disposed above the arc-shaped structure.
With reference to the first aspect, an embodiment of the present invention provides a seventh possible implementation manner of the first aspect, where the apparatus further includes a singlechip connected to the switch switching circuit;
the singlechip is used for controlling the switch switching circuit to switch.
In a second aspect, an embodiment of the present invention further provides a corona discharge positioning unmanned aerial vehicle, where the positioning unmanned aerial vehicle includes the corona discharge positioning device according to any one of the above, and the corona discharge positioning device is loaded on the unmanned aerial vehicle.
The embodiment of the invention has the following beneficial effects:
the invention provides a corona discharge positioning device and a positioning unmanned aerial vehicle, comprising an array antenna sensor, a switch switching circuit and a processor which are sequentially connected, wherein the array antenna sensor comprises a plurality of antenna coils which are arranged at equal intervals; the array antenna sensor is used for detecting electromagnetic pulse signals generated by corona discharge; the switch switching circuit is used for matching and recording electromagnetic pulse signals with different intensities by circularly switching the serial numbers of the antenna coils; and the processor is used for amplifying and analyzing the electromagnetic pulse signals and determining corona discharge positions on the power transmission line by combining the serial numbers of the antenna coils. The invention can improve the positioning efficiency and accuracy of the corona discharge position of the power transmission line.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a corona discharge positioning device according to an embodiment of the present invention;
FIG. 2 is a block diagram of a corona discharge positioning device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an antenna coil according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a switching circuit according to an embodiment of the present invention.
Icon:
100-array antenna sensor; 110-an antenna coil; 120-arc structure; 200-a switch switching circuit; 300-a processor; 310-a pre-amplifier; 320-a signal processing circuit; 400-camera.
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 present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Corona discharge is a discharge phenomenon that occurs due to ionization of air caused by a high electric field intensity at the surface of a wire. The corona discharge generates high-frequency pulse current, electromagnetic interference is caused to radio communication, chemical reaction can be caused to air, damage or corrosion is caused to a solid medium and a metal electrode, ageing of a composite insulator is accelerated, energy loss is generated, and the like. Corona discharge is a focus of attention in electrical power systems. The primary problem to be solved is to determine the occurrence position of corona discharge.
In the corona discharge process, a radio-frequency pulse electromagnetic wave is generated, the frequency range of the electromagnetic wave is approximately between 230MHz and 280MHz, the farther the target area is away from the coil, the faster the radio-frequency electromagnetic wave decays, the electromagnetic pulse signal emitted by the corona discharge radiates in all directions, the more orthogonal the crossing angle of the electromagnetic wave direction and the antenna is, and the stronger the received signal is.
Based on the above, the positioning device and the positioning unmanned aerial vehicle for corona discharge provided by the embodiment of the invention have the advantages that the antenna coil receives electromagnetic pulse signals as strong as possible under the condition of fixed power, and the positioning efficiency and the positioning accuracy of the position where the corona discharge of the power transmission line occurs can be improved.
For the convenience of understanding the present embodiment, the corona discharge positioning device disclosed in the embodiment of the present invention will be described in detail.
Examples:
referring to fig. 1, the positioning device of corona discharge includes an array antenna sensor 100, a switching circuit 200, and a processor 300, which are sequentially connected.
Referring to fig. 2, the array antenna sensor 100 includes an arc structure 120 and a plurality of equally spaced antenna coils 110 disposed on the arc structure 120. Specifically, a plurality of antenna coils 110 are disposed at equal intervals along each direction of the outer surface of the arc-shaped structure 120. Each antenna coil 110 is oriented perpendicular to the arcuate structure 120.
Further, as shown in fig. 3, the antenna coil 110 has a spiral structure; the spiral antenna is adopted to receive electromagnetic pulse signals because of the characteristics of gentle characteristic impedance, good circular polarization characteristic and excellent electrical performance of end emission and side emission.
The number of antenna coils 110 here is at least four.
In addition, the corona discharge positioning device further includes a camera 400 disposed above the arc structure 120.
Further, the corona discharge positioning unmanned aerial vehicle comprises a corona discharge positioning device and an unmanned aerial vehicle, and the corona discharge positioning device is loaded on the unmanned aerial vehicle.
The corona discharge positioning device and the positioning unmanned aerial vehicle work process are as follows.
The unmanned aerial vehicle carries corona discharge's positioner to fly to the upper air, and the staff observes on ground through camera 400, makes unmanned aerial vehicle hover near transmission line. The corona discharge part radiates electromagnetic pulse signals in all directions, the signal intensity of the electromagnetic pulse signals is attenuated along with the increase of the propagation distance, and then the electromagnetic pulse signals are detected and analyzed by a corona discharge positioning device to determine the corona discharge part on the power transmission line.
An array antenna sensor 100 for detecting electromagnetic pulse signals generated by corona discharge.
Specifically, the array antenna sensor 100 includes at least four antenna coils 110 in each direction, and is capable of detecting electromagnetic pulse signals of different intensities in each direction around the sensor. Here, the unmanned aerial vehicle may be controlled to hover after the electromagnetic pulse signal is detected.
The switch switching circuit 200 is used for matching and recording electromagnetic pulse signals with different intensities by circularly switching the serial numbers of the antenna coils 110.
Specifically, as shown in fig. 4, the switch switching circuit 200 has a one-to-one connection relationship between the switch and the antenna coil 110. The switch switching circuit 200 is connected with the singlechip; the singlechip is used for controlling the switch switching circuit 200 to switch. The switch switching circuit 200 switches on each antenna coil 110 by circularly switching the serial numbers of the antenna coils 110, and performs matching recording on the electromagnetic pulse signals detected by each antenna coil 110, so that the serial numbers of the antenna coils 110 are matched with the electromagnetic pulse signals with different intensities; by comparing the intensities of the electromagnetic pulse signals of the respective antenna coils 110 until the strongest electromagnetic pulse signal is obtained, the serial number of the corresponding antenna coil 110 is recorded.
The processor 300 is used for amplifying and analyzing the electromagnetic pulse signals and determining the corona discharge position on the power transmission line by combining the serial numbers of the antenna coils 110.
Specifically, the processor 300 includes a pre-amplifier 310 and a signal processing circuit 320, and the signal processing circuit 320 is connected to the switch switching circuit 200 through the pre-amplifier 310.
The preamplifier 310 is configured to amplify the electromagnetic pulse signal to obtain an enhanced electromagnetic pulse signal. The signal processing circuit 320 is configured to compare and analyze different enhanced electromagnetic pulse signals, and determine the corona discharge location according to the signal intensity and the serial number of the antenna coil 110.
Any particular values in all examples shown and described herein are to be construed as merely illustrative and not a limitation, and thus other examples of exemplary embodiments may have different values.
The embodiment of the invention has the following beneficial effects:
the invention provides a corona discharge positioning device and a positioning unmanned aerial vehicle, comprising an array antenna sensor, a switch switching circuit and a processor which are sequentially connected, wherein the array antenna sensor comprises a plurality of antenna coils which are arranged at equal intervals; the array antenna sensor is used for detecting electromagnetic pulse signals generated by corona discharge; the switch switching circuit is used for matching and recording electromagnetic pulse signals with different intensities by circularly switching the serial numbers of the antenna coils; and the processor is used for amplifying and analyzing the electromagnetic pulse signals and determining corona discharge positions on the power transmission line by combining the serial numbers of the antenna coils. The invention can improve the positioning efficiency and accuracy of the corona discharge position of the power transmission line.
In the description of embodiments of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices 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 "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. The above-described apparatus embodiments are merely illustrative, for example, the division of the units is merely a logical function division, and there may be other manners of division in actual implementation, and for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some communication interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a non-volatile computer readable storage medium executable by a processor. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
Finally, it should be noted that: the above examples are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention, but it should be understood by those skilled in the art that the present invention is not limited thereto, and that the present invention is described in detail with reference to the foregoing examples: any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or perform equivalent substitution of some of the technical features, while remaining within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. The corona discharge positioning device is characterized by comprising an array antenna sensor, a switch switching circuit and a processor which are sequentially connected, wherein the array antenna sensor comprises a plurality of antenna coils which are arranged at equal intervals;
the array antenna sensor is used for detecting electromagnetic pulse signals generated by corona discharge;
the switch switching circuit is used for carrying out matching record on the electromagnetic pulse signals with different intensities by circularly switching the serial numbers of the antenna coils;
the processor is used for amplifying and analyzing the electromagnetic pulse signals and determining corona discharge positions on the power transmission line by combining the serial numbers of the antenna coils;
the array antenna sensor further comprises an arc-shaped structure;
a plurality of antenna coils are arranged at equal intervals along the cambered surface appearance of the cambered structure;
each antenna coil is perpendicular to the arc-shaped structure;
the closer the intersection angle of the electromagnetic wave direction of the electromagnetic pulse signal and the antenna coil is orthogonal, the stronger the signal received by the antenna coil is;
the serial numbers of the antenna coils are matched with the electromagnetic pulse signals with different intensities; and comparing the intensity of the electromagnetic pulse signals of the antenna coils until the strongest electromagnetic pulse signal is obtained, and recording the serial numbers of the corresponding antenna coils.
2. The corona discharge positioning device of claim 1, wherein said processor comprises a pre-amplifier and a signal processing circuit, said signal processing circuit being connected to said switching circuit through said pre-amplifier;
the preamplifier is used for amplifying the electromagnetic pulse signal to obtain an enhanced electromagnetic pulse signal;
the signal processing circuit is used for comparing and analyzing different enhanced electromagnetic pulse signals and determining the corona discharge position according to the signal intensity and the serial number of the antenna coil.
3. The corona discharge positioning device of claim 1 wherein said antenna coil is of helical configuration.
4. The corona discharge positioning device of claim 1 wherein said number of antenna coils is at least four.
5. The corona discharge positioning device of claim 1, further comprising a camera disposed above said arcuate structure.
6. The corona discharge positioning device of claim 1, further comprising a single chip microcomputer coupled to said switch switching circuit;
the singlechip is used for controlling the switch switching circuit to switch.
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| CN201810934183.2A CN108761294B (en) | 2018-08-15 | 2018-08-15 | Corona discharge positioning device and positioning unmanned aerial vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110058061B (en) * | 2019-05-30 | 2020-10-02 | 广东电网有限责任公司 | A shell for unmanned aerial vehicle carries on antenna detection device |
| CN110082657A (en) * | 2019-05-30 | 2019-08-02 | 广东电网有限责任公司 | A kind of UAV system array-type sensor that can position corona discharge |
| WO2024171279A1 (en) * | 2023-02-14 | 2024-08-22 | 日本電信電話株式会社 | Small unmanned plane, flight control method, and flight control program |
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