CN105021964B - A kind of transformer station partial discharge signals detecting system - Google Patents
A kind of transformer station partial discharge signals detecting system Download PDFInfo
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- CN105021964B CN105021964B CN201510527845.0A CN201510527845A CN105021964B CN 105021964 B CN105021964 B CN 105021964B CN 201510527845 A CN201510527845 A CN 201510527845A CN 105021964 B CN105021964 B CN 105021964B
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Abstract
The invention discloses a kind of transformer station partial discharge signals detecting system, include multi-channel data collection unit, wave filter, data handling system and aerial array；Described multi-channel data collection unit is for gathering the local discharge signal that antenna array receiver arrives；Wave filter is for filtering the clutter of the signal that multi-channel data collection unit collects；Described aerial array includes multiple microstrip antenna, and each described microstrip antenna includes medium flaggy, is located at the micro-strip oscillator in medium flaggy front.Described micro-strip oscillator includes in laterally zygomorphic two groups of microstrip elements, and two groups of microstrip elements all include a feed coupling piece；The principle utilizing rain supply to have signal to discharge carries out catching mensuration rain supply position, improves reception antenna, is increased by the indices of antenna, it is achieved more highly sensitive detection.
Description
Technical field
The present invention relates to a kind of transformer station partial discharge signals detecting system.
Background technology
At present, insulation fault is one of major failure of being in operation of power equipment, before power equipment generation insulation fault, the most all can have a shelf depreciation gradually developed cross in, and ultimately result in insulation breakdown.If operation equipment can be carried out partial discharge monitoring and diagnosis in this process, find local discharge signal in time, in advance defect is processed, just can be prevented effectively from the generation of Fault of Insulating Breakdown.Additionally, the location to partial discharge position, it helps formulate more targeted overhaul plan scheme, reduce power off time, improve overhaul efficiency.Therefore, all monitorings and location to the shelf depreciation of power equipment of current lot of domestic and international researcher are studied.Application No.: the patent of 2011101675994 discloses one " transformer station partial discharge signals on-line monitoring and localization method ", it utilizes omnidirectional antenna to receive signal, thus calculates the positional information of shelf depreciation.But, owing to itself there is the biggest electric field impact near transformer station, if and need to receive the local discharge signal under highfield as antenna, this has preferable performance in directional performance to be accomplished by this antenna, by practice, this antenna general receives frequency in 700-1000MHz frequency range when local discharge signal, thus launch frequency range also should 700-1000MHz frequency range, therefore, need the electric property of antenna, i.e. emitting performance, such as its omni-directional and gain and front and back ratio are required to preferable electric property.
Summary of the invention
It is an object of the invention to overcome disadvantages described above, it is provided that a kind of omni-directional and gain and front and back ratio are respectively provided with preferable electric property, thus can have the antenna of preferably electric property when applied in reverse i.e. receives signal.
For achieving the above object, the concrete scheme of the present invention is as follows: a kind of transformer station partial discharge signals detecting system, includes multi-channel data collection unit, wave filter, data handling system and aerial array；
Described multi-channel data collection unit is for gathering the local discharge signal that antenna array receiver arrives；Wave filter is for filtering the clutter of the signal that multi-channel data collection unit collects；Described aerial array includes multiple microstrip antenna, and each described microstrip antenna includes medium flaggy, is located at the micro-strip oscillator in medium flaggy front.Described micro-strip oscillator includes in laterally zygomorphic two groups of microstrip elements, and two groups of microstrip elements all include feed coupling piece；Often group microstrip element includes two structure micro-strip subelements identical, that be arranged side by side；Often organize and connected by feed line between two micro-strip subelements of microstrip element；Each described micro-strip subelement includes a three-back-shaped micro-strip circle, and four inner edges of described micro-strip circle all extend internally out the micro-strip arm of P font, and the quantity of the micro-strip arm that each limit extends internally out is four, and each two is one group, and two groups symmetrical in center line；Described each micro-strip arm is provided with the projection of arc；Being provided with rectangle the first parasitic patch in each described micro-strip circle, the side of the first parasitic patch is provided with sawtooth, and opposite side is provided with multiple rectangular radiation and refers to；Being provided with the parasitic oscillator sheet of annular second in each described micro-strip circle, the described second parasitic center ring of oscillator sheet communicates with the reverse side of medium flaggy, and the center ring of two the second parasitic oscillator sheets often organizing microstrip element is electrically connected with at the reverse side of medium flaggy.Described micro-strip circle is square.Described radiation refer between distance between 1-2mm.The quantity that described radiation refers to is between 12-20.The line thickness of described micro-strip arm is 2-5mm.The center ring of two the second parasitic oscillator sheets often organizing microstrip element is connected by feed line at the reverse side of medium flaggy.The center ring of two the second parasitic oscillator sheets often organizing microstrip element is provided with isolating bar between the reverse side and the center ring of two other the second parasitic oscillator sheet of medium flaggy.A diameter of 3mm of the second parasitic oscillator sheet.The width on described micro-strip circle limit is 1mm.The edge of described medium flaggy is provided with shielding enclosure；Two sides of described medium flaggy are provided with multiple circumferential notch；Also include the isolation parasitism oscillator sheet being located at medium flaggy front；
The invention have the benefit that the principle utilizing rain supply to have signal to discharge carries out catching and measure rain supply position, improve reception antenna, the indices of antenna is increased, it is achieved more highly sensitive detection.
Accompanying drawing explanation
Fig. 1 is the front schematic view of the medium flaggy of the present invention；
Fig. 2 is the reverse side schematic diagram of the medium flaggy of the present invention；
Fig. 3 be when frequency is 700MHZ before and after the experimental data figure of ratio；
Fig. 4 be when frequency is 890MHZ before and after the experimental data figure of ratio；
Fig. 5 be when frequency is 1000MHZ before and after the experimental data figure of ratio；
Fig. 6 is the directional diagram representing gain when frequency is 700MHZ；
Fig. 7 is the directional diagram representing gain when frequency is 890MHZ；
Fig. 8 is the directional diagram representing gain when frequency is 1000MHZ；
Description of reference numerals in Fig. 1 to Fig. 8:
1-medium flaggy；2-micro-strip circle；3-micro-strip arm；The parasitic oscillator sheet of 4-second；5-the first parasitic patch；The parasitic oscillator sheet of 6-isolation；7-isolating bar.
Detailed description of the invention
The present invention is further detailed explanation with specific embodiment below in conjunction with the accompanying drawings, is not that the practical range of the present invention is confined to this.
As shown in Figures 1 to 8, a kind of transformer station partial discharge signals detecting system described in the present embodiment, include multi-channel data collection unit, wave filter, data handling system and aerial array；
Described multi-channel data collection unit is for gathering the local discharge signal that antenna array receiver arrives；Wave filter is for filtering the clutter of the signal that multi-channel data collection unit collects；Described aerial array includes multiple microstrip antenna, and each described microstrip antenna includes medium flaggy 1, is located at the micro-strip oscillator in medium flaggy 1 front.Wherein, described micro-strip oscillator includes in laterally zygomorphic two groups of microstrip elements, and two groups of microstrip elements all include feed coupling piece；Often group microstrip element includes two structure micro-strip subelements identical, that be arranged side by side；Often organize and connected by feed line between two micro-strip subelements of microstrip element；Each described micro-strip subelement includes a three-back-shaped micro-strip circle 2, and four inner edges of described micro-strip circle 2 all extend internally out the micro-strip arm 3 of P font, and the quantity of the micro-strip arm 3 that each limit extends internally out is four, and each two is one group, and two groups symmetrical in center line；Described each micro-strip arm 3 is provided with the projection of arc；Being provided with rectangle the first parasitic patch 5 in each described micro-strip circle 2, the side of the first parasitic patch 5 is provided with sawtooth, and opposite side is provided with multiple rectangular radiation and refers to；Being provided with the parasitic oscillator sheet of annular second in each described micro-strip circle 2, the described second parasitic center ring of oscillator sheet 4 communicates with the reverse side of medium flaggy 1, and the center ring of two the second parasitic oscillator sheets 4 often organizing microstrip element is electrically connected with at the reverse side of medium flaggy 1.
Designed by continuous microstrip circuit structure, and by under constantly test and parameter adjustment, finally determine above-mentioned antenna structure, excellent communication electric parameter performance is all shown in 700MHZ to 1000MHZ frequency range, concrete, it is more than 32dB than before and after in 30dB, frequency band than average before and after the minimum frequency of radiating element；Low frequency dot gains is more than 9.37dBi, and in frequency band, average gain is more than 9.8dBi.
Concrete actual test result such as following table HFSS15 computed in software:
As shown above, it all shows excellent communication electric parameter performance in 700MHz to 1000MHz frequency range, and concrete, before and after the minimum frequency of single radiating element, ratio is all higher than 31dB, and at 950MHz, before and after the minimum frequency of single radiating element, ratio is 35.232dB；And low frequency dot gains is all higher than 9.35dBi, in frequency band, average gain is more than 9.8dBi.
From experimental data, specifically intercept the gain data figure of ratio datagram and three frequency ranges before and after three frequency ranges, such as Fig. 3 to Fig. 8,700MHz to 1000MHz achieve excellent before and after ratio characteristic, wherein, when 700MHz, such as Fig. 3, in its frequency band before and after ratio for 31.225dB；When 890MHz, such as Fig. 4, in its frequency band before and after ratio for 33.313dB；When 950MHz, such as Fig. 5, in its frequency band before and after ratio for 36.000dB；And the performance in gain: such as Fig. 6, it is when 700MHz, and its gain reaches: 9.3521 dBi；Such as Fig. 7, it is when 890MHz, and its gain reaches: 9.7550dBi；Such as Fig. 8, it is when 1000MHz, and its gain reaches: 10.200dBi；It is known that ratio is more than 33dB before and after in it is average, its gain is averagely more than 9.8dBi.
Accordingly, as reception antenna, reverse performance requirement is the highest, and therefore the reverse performance of this structural antenna is the most excellent, and gain, all at more than 9.3dBi, meets under highfield, the use requirement to 700MHz to 1000MHz frequency range, and stable performance, certainty of measurement is greatly improved.
A kind of transformer station partial discharge signals detecting system described in the present embodiment, described micro-strip circle 2 is square.Its length of side 20-30mm.Learnt by experiment and software emulation, be arranged such the standing wave of the HFS that can be effectively improved a period of time thus the overall frequency scope in broadening a period of time.
A kind of transformer station partial discharge signals detecting system described in the present embodiment, described radiation refer between distance between 1-2mm.
A kind of transformer station partial discharge signals detecting system described in the present embodiment, the quantity that described radiation refers to is between 12-20.Learnt by experiment and software emulation, be arranged such the standing wave of the HFS that can be effectively improved a period of time thus the overall frequency scope in broadening a period of time.
A kind of transformer station partial discharge signals detecting system described in the present embodiment, the line thickness of described micro-strip arm 3 is 2-5mm.Learnt by experiment and software emulation, be arranged such the standing wave of the HFS that can be effectively improved a period of time thus the overall frequency scope in broadening a period of time.
A kind of transformer station partial discharge signals detecting system described in the present embodiment, the center ring of two the second parasitic oscillator sheets 4 often organizing microstrip element is connected by feed line at the reverse side of medium flaggy 1.
A kind of transformer station partial discharge signals detecting system described in the present embodiment, the center ring of two the second parasitic oscillator sheets 4 often organizing microstrip element is provided with isolating bar 7 between the reverse side and the center ring of two other the second parasitic oscillator sheet 4 of medium flaggy 1.Isolating bar 7 can increase isolation, prevents two center ring interference of bottom surface.
A kind of transformer station partial discharge signals detecting system described in the present embodiment, a diameter of 3mm of the second parasitic oscillator sheet.Arranging parasitic oscillator sheet etc. and can be greatly simplified oscillator structure, cost is lower, and anti-interference is higher, greatly improved the impedance operator of oscillator.
A kind of transformer station partial discharge signals detecting system described in the present embodiment, the width on described micro-strip circle 2 limit is 1mm.Learnt by experiment and software emulation, be arranged such the standing wave of the HFS that can be effectively improved a period of time thus the overall frequency scope in broadening a period of time.
A kind of transformer station partial discharge signals detecting system described in the present embodiment, the edge of described medium flaggy 1 is provided with shielding enclosure；A kind of transformer station partial discharge signals detecting system described in the present embodiment, two sides of described medium flaggy 1 are provided with multiple circumferential notch；Above-mentioned setting can be effectively improved the antenna interference signal shielding performance to electric field.
A kind of transformer station partial discharge signals detecting system described in the present embodiment, also includes the isolation parasitism oscillator sheet 6 triangular in shape being located at medium flaggy 1 front；The standing wave of the HFS in a period of time can be effectively improved thus the overall frequency scope in broadening a period of time.
The above is only a preferred embodiment of the present invention, therefore all equivalence changes done according to structure, feature and the principle described in present patent application scope or modification, it is included in the protection domain of present patent application.
Claims (9)
1. a transformer station partial discharge signals detecting system, it is characterised in that: include multi-channel data collection unit, wave filter, data handling system and aerial array；
Described multi-channel data collection unit is for gathering the local discharge signal that antenna array receiver arrives；Wave filter is for filtering the clutter of the signal that multi-channel data collection unit collects；
Described aerial array includes multiple microstrip antenna, and each described microstrip antenna includes medium flaggy (1), is located at the micro-strip oscillator in medium flaggy (1) front；
Described micro-strip oscillator includes in laterally zygomorphic two groups of microstrip elements, and two groups of microstrip elements all include feed coupling piece；Often group microstrip element includes two structure micro-strip subelements identical, that be arranged side by side；Often organize and connected by feed line between two micro-strip subelements of microstrip element；
Each described micro-strip subelement includes a three-back-shaped micro-strip circle (2), four inner edges of described micro-strip circle (2) all extend internally out the micro-strip arm (3) of P font, the quantity of the micro-strip arm (3) that each limit extends internally out is four, and each two is one group, and two groups symmetrical in center line；Described each micro-strip arm (3) is provided with the projection of arc；
Being provided with rectangle the first parasitic patch (5) in each described micro-strip circle (2), the side of the first parasitic patch (5) is provided with sawtooth, and opposite side is provided with multiple rectangular radiation and refers to；
The parasitic oscillator sheet of annular second it is provided with in each described micro-strip circle (2), the center ring of the described second parasitic oscillator sheet (4) communicates with the reverse side of medium flaggy (1), and the center ring of two the second parasitic oscillator sheets (4) often organizing microstrip element is electrically connected with at the reverse side of medium flaggy (1).
A kind of transformer station partial discharge signals detecting system the most according to claim 1, it is characterised in that: described micro-strip circle (2) is square.
A kind of transformer station partial discharge signals detecting system the most according to claim 1, it is characterised in that: described radiation refer between distance between 1-2mm.
A kind of transformer station partial discharge signals detecting system the most according to claim 1, it is characterised in that: the quantity that described radiation refers to is between 12-20.
A kind of transformer station partial discharge signals detecting system the most according to claim 1, it is characterised in that: the line thickness of described micro-strip arm (3) is 2-5mm.
A kind of transformer station partial discharge signals detecting system the most according to claim 1, it is characterised in that: the center ring of two the second parasitic oscillator sheets (4) often organizing microstrip element is connected by feed line at the reverse side of medium flaggy (1).
A kind of transformer station partial discharge signals detecting system the most according to claim 1, it is characterised in that: the center ring of two the second parasitic oscillator sheets (4) often organizing microstrip element is provided with isolating bar (7) between the reverse side and the center ring of two other the second parasitic oscillator sheet (4) of medium flaggy (1).
A kind of transformer station partial discharge signals detecting system the most according to claim 1, it is characterised in that: a diameter of 3mm of the second parasitic oscillator sheet.
A kind of transformer station partial discharge signals detecting system the most according to claim 1, it is characterised in that: the width on described micro-strip circle (2) limit is 1mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510527845.0A CN105021964B (en) | 2015-08-25 | 2015-08-25 | A kind of transformer station partial discharge signals detecting system |
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| CN201510527845.0A CN105021964B (en) | 2015-08-25 | 2015-08-25 | A kind of transformer station partial discharge signals detecting system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105954655A (en) * | 2016-05-20 | 2016-09-21 | 彭曙光 | Transformer substation partial discharge signal detection system with shielding ring |
| CN106168645A (en) * | 2016-08-25 | 2016-11-30 | 谢广鹏 | It is provided with the transformer station partial discharge signals detecting system of spacer bar |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1186689A (en) * | 1997-09-12 | 1999-03-30 | Nissin Electric Co Ltd | Insulation diagnostic apparatus |
| CN102331542A (en) * | 2011-06-21 | 2012-01-25 | 山东电力研究院 | Transformer substation local discharging signal online monitoring and positioning method |
| CN103777121A (en) * | 2014-01-22 | 2014-05-07 | 上海交通大学 | Multi-band ultrahigh frequency narrow band sensor for transformer substation local discharge detecting and positioning |
| CN104134851A (en) * | 2014-07-06 | 2014-11-05 | 胡洁维 | Broadband antenna |
| CN105067969A (en) * | 2015-07-26 | 2015-11-18 | 胡洁维 | Power station partial discharge signal detection system |
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2015
- 2015-08-25 CN CN201510527845.0A patent/CN105021964B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1186689A (en) * | 1997-09-12 | 1999-03-30 | Nissin Electric Co Ltd | Insulation diagnostic apparatus |
| CN102331542A (en) * | 2011-06-21 | 2012-01-25 | 山东电力研究院 | Transformer substation local discharging signal online monitoring and positioning method |
| CN103777121A (en) * | 2014-01-22 | 2014-05-07 | 上海交通大学 | Multi-band ultrahigh frequency narrow band sensor for transformer substation local discharge detecting and positioning |
| CN104134851A (en) * | 2014-07-06 | 2014-11-05 | 胡洁维 | Broadband antenna |
| CN105067969A (en) * | 2015-07-26 | 2015-11-18 | 胡洁维 | Power station partial discharge signal detection system |
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Inventor after: Xie Bihai Inventor after: Ouyang Litong Inventor after: Ye Maolin Inventor after: Mo Zhenyu Inventor after: Shao Liuming Inventor before: Hu Dakai |
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Effective date of registration: 20160831 Address after: Nanxiang three road, Science City high tech Industrial Development Zone, Guangzhou city Guangdong province 510663 No. 46 Room 305 Applicant after: Guangdong Wan instrument Limited by Share Ltd Address before: 246000 Anhui city of Anqing Province Hill Road SEG business building 20. Applicant before: Hu Dakai |
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