CN203551729U - Intelligent on-line monitoring system for ultrahigh frequency partial discharge of paralleling reactors - Google Patents
Intelligent on-line monitoring system for ultrahigh frequency partial discharge of paralleling reactors Download PDFInfo
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- CN203551729U CN203551729U CN201320648508.3U CN201320648508U CN203551729U CN 203551729 U CN203551729 U CN 203551729U CN 201320648508 U CN201320648508 U CN 201320648508U CN 203551729 U CN203551729 U CN 203551729U
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- shunt reactor
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 25
- 239000002184 metal Substances 0.000 claims abstract description 24
- 239000003822 epoxy resin Substances 0.000 claims abstract description 19
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 19
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 17
- 230000003321 amplification Effects 0.000 claims description 16
- 238000007599 discharging Methods 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 8
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 3
- 230000035945 sensitivity Effects 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 description 7
- 238000001514 detection method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
The utility model discloses an intelligent on-line monitoring system for ultrahigh frequency partial discharge of paralleling reactors. Two ends of a metal housing are respectively connected with a cover plate and an epoxy resin plate to form an enclosed cavity, and the cavity is divided into two enclosed spaces by a shield plate; an inner wall of the metal housing at the lower space is provided with a fixed frame, an amplifying plate is installed on the fixed frame, and an internal surface of the epoxy resin plate is equipped with an antenna plate; a body wall of the metal housing at the upper space is provided with an aviation plug and an N-type head, and the antenna plate, the amplifying plate, the aviation plug and the N-type head are serially connected through leads successively; and a lower end of the metal housing is fixedly connected with a circular plate. With the intelligent on-line monitoring system, extraneous electromagnetic signals can be well shielded, electromagnetic waves generated by partial discharge in the high-voltage paralleling reactors can be received by the amplifying plate and the antenna plate in the housing more accurately, and installation is convenient; and the intelligent on-line monitoring system is strong in anti-interference capability, wide in signal bandwidth, large in dynamic range and high in sensitivity.
Description
technical field:
The utility model relates to a kind of power equipment ultrahigh frequency office and puts on-line monitoring, particularly relates to a kind of intelligent shunt reactor high-frequency local discharging on-line monitoring system.
background technology:
High-voltage shunt reactor is one of visual plant of 500kV transformer station, the safe operation of its reliability effect electrical network.Operating experience shows, high-voltage shunt reactor problem is take insulativity fault as main.As: phylogenetic several the 500kV reactor events of burning of 2005～2010 Nian Guowang companies are the insulativity fault that internal discharge causes.
High-voltage shunt reactor is mainly oil/paper insulation structure, and its insulation moves for a long time under high voltage, strong electric field environment, very responsive to shelf depreciation.Shelf depreciation is the reason of insulation degradation, is again tendency and the form of expression of insulation degradation.Therefore, Partial Discharge Detecting Technology becomes the most effectively monitoring method of current oil/paper insulation Performance Detection.But because high voltage reactor is without low pressure winding, testing equipment cannot obtain required trial voltage by low pressure winding, cause equipment to dispatch from the factory and cannot carry out partial discharge test with scene.The superfrequency sensor also not detecting for high-voltage shunt reactor in the market.
utility model content:
Technical problem to be solved in the utility model is: overcome the deficiencies in the prior art, provide a kind of antijamming capability strong, highly sensitive and intelligent shunt reactor high-frequency local discharging on-line monitoring system that can Real-Time Monitoring.
The technical solution of the utility model is: a kind of intelligent shunt reactor high-frequency local discharging on-line monitoring system, contain signal picker, signal processor and display, described signal picker is arranged on transformer station's high-voltage shunt reactor inside, described signal picker is connected with signal processor, described signal processor is connected with display, and described signal picker adopts superfrequency sensor.
Described superfrequency sensor contains metal shell and barricade, described metal shell is tubular, its upper end is connected with cover plate, lower end is connected with epoxy resin board, form the cavity of a sealing, the middle part of described cavity is provided with described barricade, described barricade is divided into described cavity in the space of two sealings, on the inwall of the described metal shell between described barricade and epoxy resin board, be provided with fixed mount, on described fixed mount, amplification board is installed, on the inside surface of described epoxy resin board, antenna plate is installed, on described metal shell body wall between described cover plate and barricade, be provided with aviation plug and N-type head, described antenna plate, amplification board and described aviation plug and N-type head are contacted successively by wire, described metal shell lower end is fixedly connected with a Circular Plate, in described Circular Plate, is evenly equipped with bolt hole.
Bolt hole in described Circular Plate is corresponding with the bolt hole of the manhole door surrounding of high-voltage shunt reactor.Described barricade is bolted on an annular fixed head, the outer ring surface of this annular fixed head and the fixed seal connection of described metal shell inwall.
The band bandwidth of superfrequency sensor is 0.5～1.5GHz.The shape of described antenna plate and amplification board is rectangle; Described antenna plate and amplification board are fixing with described epoxy resin board and fixed mount bonding respectively by anaerobic adhesive; The center of described antenna plate and the center superposition of described epoxy resin board; Described Circular Plate is made by metal material.Described signal processor comprises the signal amplification circuit, A/D change-over circuit and the data processing circuit that connect successively; Between described signal picker, signal processor and display, by metallic conduit shielded cable, connect respectively.Described signal picker and high-voltage shunt reactor device body end cap are structure as a whole; The cover plate of described signal picker is the inspection manhole lid of high-voltage shunt reactor.
The beneficial effects of the utility model are:
1, the utility model adopts high-frequency local discharging detection technique, the electromagnetic wave signal producing by gathering shelf depreciation process, and utilize reactor housing and match mechanism to shield on-the-spot all kinds of undesired signals, validity and the sensitivity that can greatly improve Partial Discharge Detection.This project achievement may extend to oil/paper insulation equipment of the same type, and having solved the equipment such as current high voltage reactor cannot be by dispatching from the factory and site test be examined the problem of its insulation status, for the safe operation of equipment provides safeguard.
2, superfrequency sensor of the present utility model has good external electromagnetic signal shielding effect, can allow amplification board and antenna plate in housing receive more accurately the electromagnetic wave that the inner shelf depreciation of high-voltage shunt reactor produces, easy for installation; Its antijamming capability is strong, signal bandwidth is wide, dynamic range is large, highly sensitive.
3, the xsect of the utility model superfrequency sensor housing and the corresponding cooperation of the manhole door of high-voltage shunt reactor, install by fastener, do not destroy original structure, and cost is lower.
4, the utility model antenna plate is close to the installation of epoxy resin board inner side, and steadiness is good, and in addition, barricade is divided into housing inner chamber in the space of two sealings, and shield effectiveness is good.
5, in the utility model housing, be provided with Circular Plate, barricade is bolted in this Circular Plate, easy accessibility, and good sealing effect.
6, the utility model can carry out on-line real time monitoring to many high-voltage shunt reactors simultaneously, record the inner local discharge signal feature of high-voltage shunt reactor, in addition, uhf sensor is completely enclosed within high-voltage shunt reactor housing, the electromagnetic signal that has thoroughly shielded transformer station is disturbed, antijamming capability is strong, highly sensitive and be easy to dismounting, is easy to promotion and implementation, has good economic benefit.
accompanying drawing explanation:
Fig. 1 is the structural representation of intelligent shunt reactor high-frequency local discharging on-line monitoring system;
Fig. 2 is the structural representation of superfrequency sensor shown in Fig. 1;
Fig. 3 is the side view of superfrequency sensor shown in Fig. 2.
embodiment:
Embodiment: referring to Fig. 1, Fig. 2 and Fig. 3, in figure, 1-cover plate; 2-bolt; 3-barricade; 4-amplification board; 5-antenna plate; 6-epoxy resin board; 7-aviation plug and N-type head; The flange of 8-high-voltage shunt reactor manhole door; 9-metal shell, 10-Circular Plate, 11-high-voltage shunt reactor, 12-signal picker, 13-metallic conduit shielded cable, 14-signal processor, 15-display.
High-voltage shunt reactor ultrahigh frequency office of transformer station is placed on line monitoring system, comprise signal picker 12, signal processor 14 and display 15, wherein signal picker 12 adopts uhf sensor and is arranged on high-voltage shunt reactor 11 inside, uhf sensor and high-voltage shunt reactor 11 device body end caps are structure as a whole, signal picker 12 is connected through the metallic conduit shielded cable 13 of high-voltage shunt reactor 11 device body end caps by sealed tube and end cap outlet with signal processor 14, signal processor 14 is connected with display 15, connection realizes by metallic conduit shielded cable 13.System can support multiple uhf sensors to carry out signals collecting simultaneously, thereby complete, high-voltage shunt reactor is carried out to on-line real time monitoring, records the inner local discharge signal feature of high-voltage shunt reactor.
Superfrequency sensor contains metal shell 9 and barricade 3, wherein: metal shell 9 is tubular, its upper end is connected with cover plate 1, lower end is connected with epoxy resin board 6, form the cavity of a sealing, the middle part of cavity is provided with barricade 3, barricade 3 is divided into cavity in the space of two sealings, on the inwall of the metal shell 9 between barricade 3 and epoxy resin board 6, be provided with fixed mount, amplification board 4 is installed on fixed mount, antenna plate 5 is installed on the inside surface of epoxy resin board 6, on metal shell 9 body walls between cover plate 1 and barricade 3, be provided with aviation plug and N-type 7, antenna plate 5, amplification board 4 and aviation plug and N-type 7 contacted successively by wire, metal shell 9 lower ends are fixedly connected with the inner ring surface of a Circular Plate 10, in Circular Plate 10, are evenly equipped with bolt hole.
Bolt hole in Circular Plate is corresponding with the bolt hole of the flange 8 of high-voltage shunt reactor manhole door.Barricade 3 is bolted on an annular fixed head, the outer ring surface of this annular fixed head and metal shell 9 inwall fixed seal connections.Antenna plate 5 and amplification board 4 are rectangle.Antenna plate 5 and amplification board 4 are fixing with epoxy resin board 6 and fixed mount bonding respectively by anaerobic adhesive; The center superposition of the center of antenna plate 5 and epoxy resin board 6; Circular Plate 10 is made by metal material.Between the flange 8 of Circular Plate 10 and high-voltage shunt reactor manhole door, be provided with O-ring seal.
During work, metal shell 9 is placed on to the manhole door place of high-voltage shunt reactor 12, be bolted, aviation plug and N-type 7 and outer monitoring equipment connection, barricade 3 falls external electromagnetic signal shielding, amplification board 4 and antenna plate 5 receive the electromagnetic wave that the inner shelf depreciation of high-voltage shunt reactor 12 produces more accurately, and be sent on outer monitoring equipment, for the inner shelf depreciation situation of Real-Time Monitoring high-voltage shunt reactor 12, its antijamming capability is strong, signal bandwidth is wide, dynamic range is large, highly sensitive.Band bandwidth is 0.5～1.5GHz.
Above embodiment is only the preferred embodiments of the present invention; the invention is not restricted to above-described embodiment; for persons skilled in the art, any apparent change of under the prerequisite that does not deviate from the principle of the invention, it being done, all belongs to protection scope of the present invention.
Claims (7)
1. an intelligent shunt reactor high-frequency local discharging on-line monitoring system, contain signal picker, signal processor and display, it is characterized in that: described signal picker is arranged on transformer station's high-voltage shunt reactor inside, described signal picker is connected with signal processor, described signal processor is connected with display, and described signal picker adopts superfrequency sensor, described superfrequency sensor contains metal shell and barricade, described metal shell is tubular, its upper end is connected with cover plate, lower end is connected with epoxy resin board, form the cavity of a sealing, the middle part of described cavity is provided with described barricade, described barricade is divided into described cavity in the space of two sealings, on the inwall of the described metal shell between described barricade and epoxy resin board, be provided with fixed mount, on described fixed mount, amplification board is installed, on the inside surface of described epoxy resin board, antenna plate is installed, on described metal shell body wall between described cover plate and barricade, be provided with aviation plug and N-type head, described antenna plate, amplification board and described aviation plug and N-type head are contacted successively by wire, described metal shell lower end is fixedly connected with a Circular Plate, in described Circular Plate, is evenly equipped with bolt hole.
2. intelligent shunt reactor high-frequency local discharging on-line monitoring system according to claim 1, is characterized in that: the bolt hole in described Circular Plate is corresponding with the bolt hole of the manhole door surrounding of high-voltage shunt reactor.
3. intelligent shunt reactor high-frequency local discharging on-line monitoring system according to claim 1, it is characterized in that: described barricade is bolted on an annular fixed head outer ring surface of this annular fixed head and the fixed seal connection of described metal shell inwall.
4. intelligent shunt reactor high-frequency local discharging on-line monitoring system according to claim 1, is characterized in that: the band bandwidth of superfrequency sensor is 0.5～1.5GHz.
5. intelligent shunt reactor high-frequency local discharging on-line monitoring system according to claim 1, is characterized in that: the shape of described antenna plate and amplification board is rectangle; Described antenna plate and amplification board are fixing with described epoxy resin board and fixed mount bonding respectively by anaerobic adhesive; The center of described antenna plate and the center superposition of described epoxy resin board; Described Circular Plate is made by metal material.
6. according to the intelligent shunt reactor high-frequency local discharging on-line monitoring system described in claim 1-5 any one, it is characterized in that: described signal processor comprises the signal amplification circuit, A/D change-over circuit and the data processing circuit that connect successively; Between described signal picker, signal processor and display, by metallic conduit shielded cable, connect respectively.
7. intelligent shunt reactor high-frequency local discharging on-line monitoring system according to claim 6, is characterized in that: described signal picker and high-voltage shunt reactor device body end cap are structure as a whole; The cover plate of described signal picker is the inspection manhole lid of high-voltage shunt reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320648508.3U CN203551729U (en) | 2013-10-21 | 2013-10-21 | Intelligent on-line monitoring system for ultrahigh frequency partial discharge of paralleling reactors |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320648508.3U CN203551729U (en) | 2013-10-21 | 2013-10-21 | Intelligent on-line monitoring system for ultrahigh frequency partial discharge of paralleling reactors |
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| CN203551729U true CN203551729U (en) | 2014-04-16 |
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| CN201320648508.3U Expired - Fee Related CN203551729U (en) | 2013-10-21 | 2013-10-21 | Intelligent on-line monitoring system for ultrahigh frequency partial discharge of paralleling reactors |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103529368A (en) * | 2013-10-21 | 2014-01-22 | 国家电网公司 | Online monitoring system for ultrahigh-frequency partial discharge of high-voltage parallel reactors of substation |
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2013
- 2013-10-21 CN CN201320648508.3U patent/CN203551729U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103529368A (en) * | 2013-10-21 | 2014-01-22 | 国家电网公司 | Online monitoring system for ultrahigh-frequency partial discharge of high-voltage parallel reactors of substation |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140416 Termination date: 20161021 |