CN109659689A - A kind of four frequency channel microstrip antennas for the detection of partial-discharge ultrahigh-frequency method - Google Patents
A kind of four frequency channel microstrip antennas for the detection of partial-discharge ultrahigh-frequency method Download PDFInfo
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- CN109659689A CN109659689A CN201910082293.5A CN201910082293A CN109659689A CN 109659689 A CN109659689 A CN 109659689A CN 201910082293 A CN201910082293 A CN 201910082293A CN 109659689 A CN109659689 A CN 109659689A
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- frequency
- minor matters
- antenna
- partial
- detection
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
- H01Q5/28—Arrangements for establishing polarisation or beam width over two or more different wavebands
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Details Of Aerials (AREA)
Abstract
The present invention relates to a kind of four frequency channel microstrip antennas for the detection of partial-discharge ultrahigh-frequency method, including substrate and antenna, the antenna is paster antenna, it is characterized in that, the antenna includes four radiation minor matters of the different length positioned at substrate front side and the back side, and the minor matters of different length correspond to different working frequency range.Compared with prior art, the present invention effectively avoids the different operating frequency range of antenna from interacting by installing the minor matters of different length in substrate front side and the back side so that the degree of coupling of different minor matters from each other is lower, frequency information more horn of plenty, advantageously compared to other multifrequency antennas.
Description
Technical field
The present invention relates to a kind of microstrip antennas, more particularly, to a kind of four frequency ranges for the detection of partial-discharge ultrahigh-frequency method
Microstrip antenna.
Background technique
With advancing by leaps and bounds for China's power industry construction, modern power systems are just towards bulk power grid, large-sized unit, superelevation
Pressure, large capacity direction develop, for stability, the reliability for ensureing electric system, safe coefficient to power equipment it is also proposed that
Higher requirement.The safety detection of large-scale power transmission network also becomes the main problem of power industry concern.
Shelf depreciation (partial discharge, PD) (referred to as " partial discharge ") refers to when insulation of electrical installation is in pole not
When in uniform electric field, local field strength is higher, meets or exceeds the critical value that insulation position is discharged.Partial discharge is simultaneously not formed complete
Discharge channel is to occur to discharge in the non-through of insulation of electrical installation partial region.If taking measures not in time, gradually send out
Exhibition will lure apparatus insulated breakdown or flashover into.Shelf depreciation is the inducement and mark of insulation of electrical installation integrality deterioration, is led to
Monitoring shelf depreciation is crossed to be of great significance to diagnose and assess insulation of electrical installation state.
When insulation fault occurring inside power equipment, that occur at first is exactly PD, if finding not in time, will evolve into sudden strain of a muscle
Network even insulate completely breakdown, from this, PD be both aggravation insulation degradation the main reason for, simultaneously because PD signal contain it is rich
The rich information that can reflect the insulation fault as caused by various insulation defects, it is possible to which electric power is learnt by analysis PD signal
The state of insulation of equipment.Carrying out PD on-line monitoring to power equipment as a result, is that current guarantee equipment being capable of safe and stable operation
Technical way.
Superfrequency method (UHF) as the detection method of power equipment shelf depreciation be most initially last century the eighties by
What central power office, Britain proposed.Because Electric Power Equipment Insulation intensity and disruptive field intensity are all very high, when a partial discharge event occurs will
Very steep pulse current can be generated, and stimulating frequency is up to the electromagnetic wave of number GHz.UHF detection method uses wideband high-frequency antenna
Detect the electromagnetic wave signal of power equipment partial discharge electric current excitation.UHF method is excellent by its strong antijamming capability, positioning accuracy height etc.
Point receives the attention of countries in the world researcher.In the partial discharge monitoring system based on UHF method, for detecting
The antenna sensor of PD is the key point of the system.
Summary of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide one kind to be used for shelf depreciation
Four frequency channel microstrip antennas of superfrequency method detection.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of four frequency channel microstrip antennas for the detection of partial-discharge ultrahigh-frequency method, including substrate and antenna, the day
Line is paster antenna, and the antenna includes four radiation minor matters of the different length positioned at substrate front side and the back side, and difference is long
The minor matters of degree correspond to different working frequency range.
The front of the substrate is set there are three minor matters are radiated, and one of radiation minor matters are linear, other two spoke
Shoot section is linked to be c-type, intersects with linear radiation minor matters.
The back side of the substrate is equipped with a radiation minor matters, and the radiation minor matters are in semicircular arc.
The coordinate position that the radiation minor matters of the semicircular arc radiate minor matters with positive three is not be overlapped.
The substrate size is 94mm*89mm.
The antenna is made of radiation minor matters and earth plate, is fed using the microstrip line of 50 Ω.
The earth plate is in rectangle, is located at substrate back.
The Antenna Operation is in 0.48-0.51GHz, 0.772-0.83GHz, 1.16-1.27GHz and 1.82-1.86GHz
Four frequency ranges.
Compared with prior art, the invention has the following advantages that
(1) it by installing the minor matters of different length in substrate front side and the back side, is designed, is made by special structure and shape
It obtains the degree of coupling of different minor matters from each other to be lower, effectively avoids the different operating frequency range of antenna from interacting, frequency information
More horn of plenty compares other multifrequency antennas advantageously
(2) Antenna Operation is in 0.48-0.51GHz, 0.772-0.83GHz, 1.16-1.27GHz and 1.82-1.86GHz tetra-
A frequency range can avoid mobile phone signal (880~960MHz), Zigbee wireless telecommunications (868MHz) and 433MHz ISM channel radio
The signal interferences such as news.
(3) antenna size is smaller, facilitates installation.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the present embodiment antenna；
Fig. 2 is return loss (S11) parameters simulation result of the present embodiment antenna.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with technical solution of the present invention
Premised on implemented, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to
Following embodiments.
Embodiment
As shown in Figure 1, it is a kind of for partial-discharge ultrahigh-frequency method detection four frequency channel microstrip antennas, including with FR4 be situated between
The substrate 1 and antenna 2 of material, antenna 2 are paster antenna, and antenna 2 is made of radiation minor matters and earth plate, using the micro- of 50 Ω
Band line is fed, and radiation minor matters are equipped with four, are located at substrate front side and the back side, has different length, different length
Minor matters correspond to different working frequency range.
The front of substrate is set there are three minor matters are radiated, and one of radiation minor matters are linear, and other two radiates minor matters
It is linked to be c-type, intersects with linear radiation minor matters；The back side of substrate is equipped with a radiation minor matters, and radiation minor matters are in semicircular arc, partly
The coordinate position that arc-shaped radiation minor matters radiate minor matters with positive three is not be overlapped.
Substrate size is 94mm*89mm.
Earth plate is in rectangle, is located at substrate back.
Fig. 2 is return loss (S11) parameters simulation of antenna 2 as a result, abscissa is frequency, and ordinate is return loss
(S11) dB value, theoretically S11≤- 10dB frequency band is working band.As can be seen from the figure antenna has 4 working bands, point
It Wei not 0.48-0.51GHz, 0.772-0.83GHz, 1.16-1.27GHz, 1.82-1.86GHz.
The energy of power equipment Partial discharge signal is generally concentrated at 450~550MHz, 750~850MHz and 1150 in substation
In~1 frequency range of 250MHz 3.The currently used extra-high video sensor of Partial Discharge Detection is generally working band range
For the ultra-wideband antenna of 300~1500MHz.Its wider working frequency range make sensor vulnerable to mobile phone signal (880~
960MHz), the interference of the signals such as Zigbee wireless telecommunications (868MHz) and 433MHz ISM wireless telecommunications, and the ruler of wide frequency antenna
It is very little generally large, not readily portable and installation.Under the premise of guaranteeing partial discharge detection sensitivity, the working band of this antenna can be with
Above-mentioned interference signal is avoided, the anti-interference ability of sensor is improved.Antenna sensor size is smaller, facilitates installation.
Claims (8)
1. a kind of four frequency channel microstrip antennas for the detection of partial-discharge ultrahigh-frequency method, including substrate and antenna, the antenna
For paster antenna, which is characterized in that the antenna includes four radiation branch of the different length positioned at substrate front side and the back side
Section, the minor matters of different length correspond to different working frequency range.
2. a kind of four frequency channel microstrip antennas for the detection of partial-discharge ultrahigh-frequency method according to claim 1, feature
It is, the front of the substrate is set there are three minor matters are radiated, and one of radiation minor matters are linear, other two radiation branch
Section is linked to be c-type, intersects with linear radiation minor matters.
3. a kind of four frequency channel microstrip antennas for the detection of partial-discharge ultrahigh-frequency method according to claim 2, feature
It is, the back side of the substrate is equipped with a radiation minor matters, and the radiation minor matters are in semicircular arc.
4. a kind of four frequency channel microstrip antennas for the detection of partial-discharge ultrahigh-frequency method according to claim 3, feature
It is, the coordinate position that the radiation minor matters of the semicircular arc radiate minor matters with positive three is not be overlapped.
5. a kind of four frequency channel microstrip antennas for the detection of partial-discharge ultrahigh-frequency method according to claim 1, feature
It is, the substrate size is 94mm*89mm.
6. a kind of four frequency channel microstrip antennas for the detection of partial-discharge ultrahigh-frequency method according to claim 1, feature
It is, the antenna is made of radiation minor matters and earth plate, is fed using the microstrip line of 50 Ω.
7. a kind of four frequency channel microstrip antennas for the detection of partial-discharge ultrahigh-frequency method according to claim 6, feature
It is, the earth plate is in rectangle, is located at substrate back.
8. a kind of four frequency channel microstrip antennas for the detection of partial-discharge ultrahigh-frequency method according to claim 1, feature
It is, the Antenna Operation is in 0.48-0.51GHz, 0.772-0.83GHz, 1.16-1.27GHz and 1.82-1.86GHz tetra-
A frequency range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910082293.5A CN109659689A (en) | 2019-01-28 | 2019-01-28 | A kind of four frequency channel microstrip antennas for the detection of partial-discharge ultrahigh-frequency method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910082293.5A CN109659689A (en) | 2019-01-28 | 2019-01-28 | A kind of four frequency channel microstrip antennas for the detection of partial-discharge ultrahigh-frequency method |
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| Publication Number | Publication Date |
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| CN109659689A true CN109659689A (en) | 2019-04-19 |
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| CN201910082293.5A Pending CN109659689A (en) | 2019-01-28 | 2019-01-28 | A kind of four frequency channel microstrip antennas for the detection of partial-discharge ultrahigh-frequency method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112103638A (en) * | 2020-09-09 | 2020-12-18 | 安徽师范大学 | Four-band cactus palm-shaped small-sized microstrip antenna based on 5G frequency band and WLAN frequency band |
-
2019
- 2019-01-28 CN CN201910082293.5A patent/CN109659689A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112103638A (en) * | 2020-09-09 | 2020-12-18 | 安徽师范大学 | Four-band cactus palm-shaped small-sized microstrip antenna based on 5G frequency band and WLAN frequency band |
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