CN105807181A - Automatic positioning method and device for discharge source - Google Patents
Automatic positioning method and device for discharge source Download PDFInfo
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- CN105807181A CN105807181A CN201610128752.5A CN201610128752A CN105807181A CN 105807181 A CN105807181 A CN 105807181A CN 201610128752 A CN201610128752 A CN 201610128752A CN 105807181 A CN105807181 A CN 105807181A
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- 238000000034 method Methods 0.000 title claims abstract description 47
- 239000000203 mixture Substances 0.000 claims description 2
- 230000032683 aging Effects 0.000 abstract description 6
- 238000009413 insulation Methods 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 238000007689 inspection Methods 0.000 abstract 1
- 239000011810 insulating material Substances 0.000 abstract 1
- 208000028659 discharge Diseases 0.000 description 53
- 239000012212 insulator Substances 0.000 description 2
- 230000004382 visual function Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000005314 correlation function Methods 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
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- 239000004065 semiconductor Substances 0.000 description 1
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- 239000007787 solid Substances 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
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
- G01R31/08—Locating faults in cables, transmission lines, or networks
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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
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Abstract
The invention relates to a method and a device for automatically positioning a discharge source, wherein the device comprises the following components: the device comprises a signal receiving device, a processing device, a camera device and a rotating motor for driving the camera device to rotate; the signal receiving device is used for receiving the electromagnetic wave signals generated by the discharge source and recording the waveform data of the electromagnetic wave signals; the processing device is used for reading the waveform data of the electromagnetic wave signals, calculating the arrival direction of the electromagnetic wave signals relative to the signal receiving device and controlling the rotation of the rotating motor according to the arrival direction; the camera device is used for shooting after rotating to a target position, and a picture for positioning the discharge source is obtained. The invention can facilitate the staff to find the position of the discharge source or the power equipment where the discharge source is positioned visually, find the aging part of the insulating material as soon as possible and avoid the insulation fault and the interference to the surrounding electromagnetic environment. The invention can be controlled by self-programming software programs, the whole process can be automatically completed by one key, and a new means is provided for the inspection of the insulation fault of the power transmission line.
Description
Technical field
The present invention relates to the electric discharge diagnostic field in power system, particularly relate to a kind of discharge source automatic positioning method and device.
Background technology
In power system, shelf depreciation or spark discharge are the omens that insulant is aging, fault produces, and the communication equipment near electric line, transformer station, television broadcasting signal etc. also can be caused electromagnetic interference by the produced high frequency radiation electromagnetic wave of electric discharge simultaneously.Therefore, in order to find the aging position of insulant early, it is to avoid insulation fault and the interference to periphery electromagnetic environment, it is necessary to the position of discharge source is accurately positioned.
Summary of the invention
Based on this, for solving the problems of the prior art, the present invention provides a kind of discharge source automatic positioning method and device, staff can be facilitated to find out the position of discharge source or the power equipment at discharge source place intuitively, find the aging position of insulant early, it is to avoid insulation fault and the interference to periphery electromagnetic environment.
For achieving the above object, the embodiment of the present invention is by the following technical solutions:
A kind of discharge source automatic positioning equipment, including: signal receiving device, processes device, camera head and the rotary electric machine driving described camera head to rotate；
Described signal receiving device is for receiving the electromagnetic wave signal that discharge source produces, and recording electromagnetic wave signal waveform data；
Described process device is used for reading described electromagnetic wave signal Wave data, calculates the electromagnetic wave signal direction of arrival relative to described signal receiving device, and controls the rotation of described rotary electric machine according to described direction of arrival；
Described camera head, for shooting after turning to the target location corresponding with described direction of arrival with described rotary electric machine, obtains the photo for orientation discharge source.
And one discharge source automatic positioning method, comprise the steps:
Signal receiving device receives the electromagnetic wave signal that discharge source produces recording electromagnetic wave signal waveform data；
Process device and read described electromagnetic wave signal waveform, calculate the electromagnetic wave signal direction of arrival relative to described signal receiving device；
Process device and control rotary electric machine rotation according to described direction of arrival, make the camera head fixing with described rotary electric machine turn to the target location corresponding with described direction of arrival；
Described camera head shoots after turning to target location, obtains the photo for orientation discharge source.
The present invention is based on electromagnetic wave signal direction of arrival estimating techniques, controlling the camera head shooting photo for orientation discharge source by the direction of arrival that calculates, this visual function can facilitate the power equipment at position that staff finds out discharge source intuitively or discharge source place.The discharge source automatic positioning equipment of the present invention can carry polling transmission line vehicle, can find the aging position of insulant early, it is to avoid insulation fault and the interference to periphery electromagnetic environment.The discharge source automatic positioning method of the present invention can pass through self-programmed software programme-control, and overall process can one-touch be automatically performed, and patrols and examines for transmission line insulator fault and provides new means.
Accompanying drawing explanation
Fig. 1 is the discharge source automatic positioning equipment structural representation in one embodiment of the present invention；
Fig. 2 is the discharge source automatic positioning equipment structural representation in another embodiment of the present invention；
Fig. 3 is the discharge source automatic positioning method schematic flow sheet in one embodiment of the present invention.
Detailed description of the invention
Below in conjunction with preferred embodiment and accompanying drawing, present disclosure is described in further detail.Obviously, embodiment described below is only used for explaining the present invention, but not limitation of the invention.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.Although it should be appreciated that adopt term " first ", " second " etc. to describe various information hereinafter, but these information should not necessarily be limited by these terms, these terms are only used for being distinguished from each other out same type of information.Such as, without departing from the present invention, " first " information can also be referred to as " second " information, similar, and " second " information can also be referred to as " first " information.It also should be noted that, for the ease of describing, accompanying drawing illustrate only part related to the present invention but not full content.
Fig. 1 is the discharge source automatic positioning equipment structural representation in one embodiment of the present invention, as shown in Figure 1, this discharge source automatic positioning equipment, including: signal receiving device 1, process device 2, rotary electric machine 3 and camera head 4, rotary electric machine 3 can drive camera head 4 to rotate.
Wherein, signal receiving device 1 is for receiving the electromagnetic wave signal that discharge source produces, and recording electromagnetic wave signal waveform data.In the prior art, there is relatively multi-method to receive the electromagnetic wave signal that discharge source produces, relatively conventional is utilize UHF-antenna to receive electromagnetic wave signal, therefore, in the optional embodiment of one, with reference to shown in Fig. 2, the signal receiving device 1 of the present invention includes aerial array 11 and oscillograph 12, and aerial array 11 is connected with the input of oscillograph 12 by coaxial cable 13.The arrangement mode of aerial array 11 includes the various ways such as matrix, rhombus, triangle, Y shape and tetrahedron top.Aerial array 11 can comprise multiple wideband omnidirectional antenna, the electromagnetic wave signal that discharge source produces can be received.
Oscillograph is a kind of purposes electronic measuring instrument very widely, and it can record electric signal waveform, it is simple to people study the change procedure of various electrical phenomena.Utilize oscillograph can observe the various time dependent wavy curve of unlike signal amplitude, it is also possible to test various different electricity with it, such as voltage, electric current, frequency, phase contrast, modulation etc..In the present embodiment, can be selected for the oscillograph 12 of high sample frequency and carry out the electromagnetic wave signal that sample record aerial array 11 receives, obtain electromagnetic wave signal Wave data.
Process device 2 and be used for reading electromagnetic wave signal Wave data, calculate the electromagnetic wave signal direction of arrival relative to signal receiving device 1, and rotate according to this direction of arrival control rotary electric machine 3.Concrete, process device 2 and can adopt computing chip or computer (notebook computer or desktop computer, consider portable performance, can preferably select notebook computer), if processing device 2 is computer, netting twine can be passed through and connect oscillograph 12 and computer, directly invoke the electromagnetic wave signal Wave data being recorded in oscillograph 12 again through Shared Folders in computer-side.
Processing device 2 can adopt positioning equation group derivation algorithm to calculate the electromagnetic wave signal direction of arrival relative to signal receiving device 1 of discharge source generation, for example with Newton-Raphson alternative manner, search the many algorithms such as Ge Fa and population optimal estimation and time difference level-crossing method, owing to the positional accuracy under different antennae arrangement mode and under location algorithm is different, it is therefore desirable to Rational choice antenna arrangement method and location algorithm.Preferably, with reference to shown in Fig. 2, the present embodiment adopts the mattress array array that 4 antennas (respectively antenna 111, antenna 112, antenna 113 and antenna 114) form, 4 square arrangements of antenna, antenna spacing is 1 meter, antenna height is 1 meter, and in order to reduce the calculating error produced because of signal transmission time, 4 antennas can be connected with the input of oscillograph 12 respectively through the coaxial cable 13 of equal length.
After the mattress array array of 4 antenna compositions receives the electromagnetic wave signal that discharge source produces, oscillograph 12 recording electromagnetic wave signal waveform data, process device 2 and read electromagnetic wave signal Wave data, and utilize such as cross-correlation function method to calculate the time delay value of the electromagnetic wave signal that 4 antennas receive, then utilize below equation to calculate the electromagnetic wave signal direction of arrival relative to signal receiving device 1 of discharge source generation:
Wherein, α0For the elevation angle, β is deflection, τ13With τ24The time delay value of the electromagnetic wave signal respectively received between antenna 111 and antenna 113, antenna 112 and antenna 114, c is the speed that electromagnetic wave signal is propagated, H13For the interval between antenna 111 and antenna 113.
Processing device 2 using the direction of arrival of calculating as controlling foundation, export control signal to rotary electric machine 3, control it and rotate, after rotary electric machine 3 rotates, camera head 4 is also by concomitant rotation.After camera head 4 turns to the target location corresponding with direction of arrival with rotary electric machine 3, shooting photo, staff just can intuitively find discharge source according to this photo, it is achieved the location of discharge source.
In the present invention, with reference to shown in Fig. 2, if selecting mattress array array, camera head 4 then can be arranged on the middle position of mattress array array, so when processing device 2 and calculating electromagnetic wave signal that discharge source produces relative to the direction of arrival of signal receiving device 1 (namely relative to mattress array array), this direction of arrival just can be considered as the electromagnetic wave signal direction of arrival relative to camera head 4 of discharge source generation, thus can generate control command by relatively simple ground algorithm and be sent to rotary electric machine 3, rotary electric machine 3 is made to drive camera head 4 to turn to target location, camera head 4 is made to shoot towards the direction of arrival calculated.
In the optional embodiment of one, rotary electric machine 3 includes two motors, camera head 4 can be driven respectively axially to rotate around different, namely rotary electric machine 3 includes the first motor and the second motor, wherein, first motor can drive camera head 4 around the first axial-rotation, and the second motor can drive camera head 4 around the second axial-rotation.Such as shown in Fig. 2, camera head 4 is arranged on mattress array array middle position, and be placed in can around horizontal axis, vertical axial-rotation two motors on, such camera head can be made up and down, left rotation and right rotation.Motor is connected with processing device 2 by A/D, D/A conversion equipment.When, after the direction of arrival calculating the electromagnetic wave signal that discharge source produces, the control signal that process device 2 is converted into around horizontal axis rotational angle and around vertically axial rotational angle sends two motors to, and controls electric machine rotation.When, after motor stalls, camera head 4 shoots, it is thus achieved that photo.
It is preferred that after camera head 4 shoots photo, this photo can be back to process device 2, it is simple to storage and management.
It is also preferred that the left in the present embodiment, camera head 4 can be selected for industrial camera.Industrial camera stable and reliable for performance and being easily installed, camera structure is compact solid to be hardly damaged, and stream time is long, can use under poor environment, and compared to general digital camera, advantage is very prominent.Industrial camera can be divided into CCD (ChargeCoupledDevice, charge-coupled image sensor) camera and CMOS (ComplementaryMetalOxideSemiconductor, complementary metal oxide semiconductors (CMOS)) camera according to chip type.Owing to CCD camera volume is little, lightweight, it is unaffected by the magnetic field, and there is the characteristic of anti-vibration and shock, thus in the present invention, camera head 4 can preferably use CCD camera.
In sum, the discharge source automatic positioning equipment of the present invention is estimated based on direction of arrival, can shooting the photo for orientation discharge source by camera head, this visual function can facilitate the power equipment at position that staff finds out discharge source intuitively or discharge source place.The present invention can pass through self-programmed software programme-control, and overall process can one-touch be automatically performed, and patrols and examines for transmission line insulator fault and provides new means.As in figure 2 it is shown, the discharge source automatic positioning equipment of the present invention may also include support 5, signal receiving device 1, rotary electric machine 3 all may be provided on support 5.After using support 5, discharge source automatic positioning equipment can it considerably easier and simpler carry polling transmission line vehicle, finds the aging position of insulant early, it is to avoid insulation fault and the interference to periphery electromagnetic environment.
Discharge source automatic positioning equipment according to the invention described above, the present invention also provides for a kind of discharge source automatic positioning method, below in conjunction with accompanying drawing and preferred embodiment, the discharge source automatic positioning method of the present invention is illustrated.
Fig. 3 is the discharge source automatic positioning method schematic flow sheet in one embodiment of the present invention.As it is shown on figure 3, the discharge source automatic positioning method in this embodiment comprises the steps:
Step S100, signal receiving device receives the electromagnetic wave signal that discharge source produces recording electromagnetic wave signal waveform data；
Step S200, processes device and reads described electromagnetic wave signal waveform, calculates the electromagnetic wave signal direction of arrival relative to described signal receiving device；
Step S300, processes device and controls rotary electric machine rotation according to described direction of arrival, make the camera head fixing with described rotary electric machine turn to the target location corresponding with described direction of arrival；
Step S400, described camera head shoots after turning to target location, obtains the photo for orientation discharge source.
In the optional embodiment of one, described process device is computer, and described computer (such as notebook computer or desktop computer) can directly invoke the electromagnetic wave signal Wave data of signal receiving device record by Shared Folders.
In the optional embodiment of one, the discharge source automatic positioning method of the present invention, also include the step being stored in by described photo in described process device, staff so can be facilitated to store and manage photo.
Above-mentioned discharge source automatic positioning equipment can perform the discharge source automatic positioning method that the embodiment of the present invention provides, and specific works this process of discharge source automatic positioning equipment has above been described in detail, so place no longer repeats.
Each technical characteristic of embodiment described above can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics is absent from contradiction, all it is considered to be the scope that this specification is recorded.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes comparatively concrete and detailed, but can not therefore be construed as limiting the scope of the patent.It should be pointed out that, for the person of ordinary skill of the art, without departing from the inventive concept of the premise, it is also possible to making some deformation and improvement, these broadly fall into protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a discharge source automatic positioning equipment, it is characterised in that including: signal receiving device, process device, camera head and drive the rotary electric machine that described camera head rotates；
Described signal receiving device is for receiving the electromagnetic wave signal that discharge source produces, and recording electromagnetic wave signal waveform data；
Described process device is used for reading described electromagnetic wave signal Wave data, calculates the electromagnetic wave signal direction of arrival relative to described signal receiving device, and controls the rotation of described rotary electric machine according to described direction of arrival；
Described camera head, for shooting after turning to the target location corresponding with described direction of arrival with described rotary electric machine, obtains the photo for orientation discharge source.
2. discharge source automatic positioning equipment according to claim 1, it is characterised in that described signal receiving device includes aerial array and oscillograph, described aerial array is connected with described oscillographic input by coaxial cable.
3. discharge source automatic positioning equipment according to claim 2, it is characterised in that described aerial array is the mattress array array of 4 antenna compositions.
4. discharge source automatic positioning equipment according to claim 3, it is characterised in that 4 antennas are connected with described oscillographic input respectively through the coaxial cable of equal length.
5. discharge source automatic positioning equipment according to claim 3, it is characterised in that described camera head is arranged on the middle position of described mattress array array.
6. discharge source automatic positioning equipment according to claim 1, it is characterised in that described rotary electric machine includes driving described camera head around the first motor of the first axial-rotation and to drive described camera head around the second motor of the second axial-rotation.
7. discharge source automatic positioning equipment according to claim 1, it is characterised in that described camera head is CCD camera.
8. a discharge source automatic positioning method, it is characterised in that comprise the steps:
Signal receiving device receives the electromagnetic wave signal that discharge source produces recording electromagnetic wave signal waveform data；
Process device and read described electromagnetic wave signal waveform, calculate the electromagnetic wave signal direction of arrival relative to described signal receiving device；
Process device and control rotary electric machine rotation according to described direction of arrival, make the camera head fixing with described rotary electric machine turn to the target location corresponding with described direction of arrival；
Described camera head shoots after turning to target location, obtains the photo for orientation discharge source.
9. discharge source automatic positioning method according to claim 8, it is characterised in that described process device is computer, described computer directly invokes the electromagnetic wave signal Wave data of signal receiving device record by Shared Folders.
10. discharge source automatic positioning method according to claim 8 or claim 9, it is characterised in that also comprise the steps:
Described photo is stored in described process device.
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| CN201610128752.5A CN105807181B (en) | 2016-03-07 | 2016-03-07 | Automatic positioning method and device for discharge source |
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| CN201610128752.5A CN105807181B (en) | 2016-03-07 | 2016-03-07 | Automatic positioning method and device for discharge source |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106771400A (en) * | 2016-12-27 | 2017-05-31 | 国网辽宁省电力有限公司电力科学研究院 | A kind of discharge source direction and location experiment dipole antenna linear pattern pallet |
| CN107037401A (en) * | 2017-05-24 | 2017-08-11 | 国网辽宁省电力有限公司电力科学研究院 | One kind electric discharge source position visualization device |
| CN107037271A (en) * | 2017-05-24 | 2017-08-11 | 国网辽宁省电力有限公司电力科学研究院 | A kind of wave electromagnetic radiation source investigation system based on cross-correlated signal Subspace algorithm |
| CN108279365A (en) * | 2018-04-18 | 2018-07-13 | 国网江苏省电力有限公司电力科学研究院 | Spatial electromagnetic wave monitoring positioning device, system and method in a kind of GIL piping lanes |
| CN110632474A (en) * | 2019-10-24 | 2019-12-31 | 孙正武 | Method and system for monitoring and positioning discharge fault of indoor power line |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106771400A (en) * | 2016-12-27 | 2017-05-31 | 国网辽宁省电力有限公司电力科学研究院 | A kind of discharge source direction and location experiment dipole antenna linear pattern pallet |
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| CN107037271A (en) * | 2017-05-24 | 2017-08-11 | 国网辽宁省电力有限公司电力科学研究院 | A kind of wave electromagnetic radiation source investigation system based on cross-correlated signal Subspace algorithm |
| CN108279365A (en) * | 2018-04-18 | 2018-07-13 | 国网江苏省电力有限公司电力科学研究院 | Spatial electromagnetic wave monitoring positioning device, system and method in a kind of GIL piping lanes |
| CN108279365B (en) * | 2018-04-18 | 2024-05-07 | 国网江苏省电力有限公司电力科学研究院 | Electromagnetic wave monitoring and positioning device, system and method for space in GIL pipe gallery |
| CN110632474A (en) * | 2019-10-24 | 2019-12-31 | 孙正武 | Method and system for monitoring and positioning discharge fault of indoor power line |
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| CN105807181B (en) | 2018-11-30 |
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