CN107807312A - A kind of superfrequency detection method for local discharge - Google Patents
A kind of superfrequency detection method for local discharge Download PDFInfo
- Publication number
- CN107807312A CN107807312A CN201710884105.1A CN201710884105A CN107807312A CN 107807312 A CN107807312 A CN 107807312A CN 201710884105 A CN201710884105 A CN 201710884105A CN 107807312 A CN107807312 A CN 107807312A
- Authority
- CN
- China
- Prior art keywords
- screen layer
- plate aerial
- output connector
- signal
- cambered surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- G01R31/1254—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 gas-insulated power appliances or vacuum gaps
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The present invention relates to a kind of superfrequency detection method for local discharge.Shortcomings be present in existing method.The inventive method be by plate aerial be arranged in Strip casting hole screen layer disc insulator insulator body and screen layer between, plate aerial is insulated with screen layer by insulating barrier；The orthographic projection of the plug hole of screen layer is located in the range of plate aerial, and the top surface of plug hole is closed by metal cover board.Signal output connector is arranged on metal cover board, the output end of signal output connector and signal conditioning circuit is connected by RF cable, and the input of signal conditioning circuit is connected with plate aerial by feeder line.The ground protection lid rotation of signal output connector is back-outed, external interface is accessed, passes through external cable transmission to backstage superfrequency detecting instrument, you can collection analysis ultrahigh-frequency signal.The inventive method is by built-in antenna to insulating basin, shielding properties is superior, anti-interference is good, detection efficiency is high, easy to maintenance.
Description
Technical field
The invention belongs to high pressure detection technique field, and in particular to a kind of superfrequency detection method for local discharge.
Background technology
Superfrequency detection method for local discharge is that GIS (open by Gas Insulated Switchgear, gas-insulated closing
Close) the key technology means of state of insulation detection, this method mainly by external extra-high video sensor or built-in extra-high keeps pouring in
Sensor carries out superfrequency Partial discharge signal collection.
GIS disc insulators are for connecting the insulated support between GIS 2 air chambers.Mainly there are three kinds at present：Without screen
Cover the disc insulator of layer, the totally-enclosed disc insulator with screen layer, the disc insulator of Strip casting hole screen layer.External spy
High frequency sensors are mainly used in the disc insulator without screen layer, the disc insulator of plug hole screen layer；Built-in superfrequency
Sensor is mainly used in the totally-enclosed disc insulator with screen layer.
Built-in extra-high video sensor collection signal needs GIS device producer to be reserved on tank body and mouth is fixedly mounted, and the structure has
Shortcomings：First, it is difficult to ensure that GIS insulating safety distances, easily trigger the insulation defects such as floating potential；Second, the later stage can not
Change monitoring position, detection efficiency are low；Third, directly affect the air-tightness of tank body, globality and the workload for increasing perforate.
External extra-high video sensor collection signal, though without reserved installing port, when being detected using plug hole, by plug hole
Size is influenceed, it is necessary to sensor is placed in outside the plug hole of the disc insulator of Strip casting hole screen layer, internal signal is present and is declined
Subtract it is big, and the shortcomings of easily by external interference；For the disc insulator without screen layer, though detection signal is good, GIS be present certainly
The outside electromagnetic radiation of body is big, detection signal easily by external interference the shortcomings of.
The content of the invention
The purpose of the present invention is aiming at the deficiencies in the prior art, there is provided a kind of superfrequency detection method for local discharge.
The inventive method be by plate aerial be arranged in Strip casting hole screen layer disc insulator insulator body with
Between screen layer, plate aerial is insulated with screen layer by insulating barrier, and plate aerial is the extra-high video sensor of annular；Screen layer
The orthographic projection of plug hole be located in the range of plate aerial；The side wall of plug hole is metal screen layer, and bottom is insulating barrier, top surface
Closed by metal cover board.
Signal output connector is arranged on metal cover board, the output end of signal output connector and signal conditioning circuit passes through
RF cable is connected, and the input of signal conditioning circuit is connected with plate aerial by feeder line.
The rotation of the ground protection lid of signal output connector is back-outed, accesses external interface, by external cable transmission to rear
Platform superfrequency detecting instrument, you can collection analysis ultrahigh-frequency signal.
Described plate aerial and screen layer are cylindrical shape, are coated on the edge circumference of disc insulator.
Described plate aerial is cambered surface plate aerial, and screen layer is cambered surface insulation board, cambered surface plate aerial and screen layer
Cambered surface for cambered surface insulation board fits, and its projected area is more than the projected area of plug hole.
The extra-high video sensor of annular is built into insulating basin by the inventive method, does not change GIS electrical safety distance
And insulating properties, you can reach the Detection results of built-in sensors；The design shielding properties is superior, good in anti-interference performance, adapts to
Site environment；The problem of needing perforate built in GIS sensors is avoided that, avoids easily triggering the insulation such as suspended discharge to lack built in sensor
Fall into；Annular UHF-antenna built in outfit, bandwidth is detected, signal receiving plane is big, can efficiently catch Partial discharge signal in GIS；It is interior
Signal processing module is put, useful signal decay is small, and detection efficiency is high, and module is easy to maintenance, securely and reliably, can be long-term use of.
Brief description of the drawings
Fig. 1 is the positive structure schematic of one embodiment of the invention；
Fig. 2 is Fig. 1 side structure schematic diagram；
Fig. 3 is the positive structure schematic of another embodiment of the present invention；
Fig. 4 Fig. 3 side structure schematic diagram.
Embodiment
A kind of superfrequency detection method for local discharge, this method are that plate aerial is arranged in the basin of Strip casting hole screen layer
Between the insulator body and screen layer of formula insulator, plate aerial is insulated with screen layer by insulating barrier, and plate aerial is
The extra-high video sensor of annular；The orthographic projection of the plug hole of screen layer is located in the range of plate aerial；The side wall of plug hole is metal
Screen layer, bottom are insulating barrier, and top surface is closed by metal cover board.
Signal output connector is arranged on metal cover board, the output end of signal output connector and signal conditioning circuit passes through
RF cable is connected, and the input of signal conditioning circuit is connected with plate aerial by feeder line.
The rotation of the ground protection lid of signal output connector is back-outed, accesses external interface, by external cable transmission to rear
Platform superfrequency detecting instrument, you can collection analysis ultrahigh-frequency signal.
Two kinds of embodiments given below.
Embodiment 1.
As shown in Figure 1 and Figure 2, the totally-enclosed insulating basin body 1 of insulating materials is covered with metal material along wall outer surface
Antenna stack 2, antenna stack 2 are cladded with insulating barrier 3, and insulating barrier 3 is cladded with metal screen layer 4, antenna stack 2 and metal screen layer 4 it
Between insulated by insulating barrier 3.Antenna stack 2 is the extra-high video sensor of annular.
The metal screen layer 4 of annular is provided with plug hole 5, and plug hole 5 extends radially through metal screen layer 4, plug hole 5
Side wall is step-like, and the top of plug hole 5 is provided with metal cover board 6, and metal cover board 6 is arranged on step 5-1, by screw with
Metal screen layer 4 is fixedly connected.The side wall of plug hole 5 is metal screen layer, and bottom is insulating barrier 3, and top is metal cover board 6,
The installation cavity of closing is enclosed, signal conditioning circuit plate is arranged in the installation cavity body.
Signal output connector mounting hole 6-1 is provided with metal cover board 6.In work, signal output connector is consolidated through mounting hole
Surely it is arranged on metal cover board 6, signal output connector is connected by feeder line with antenna stack 2, can gather the superfrequency inside GIS
Partial discharge signal, by external cable transmission to backstage superfrequency detecting instrument, analyze ultrahigh-frequency signal.
Embodiment 2.
As shown in Figure 3, Figure 4, the metal screen layer 4 of annular is coated on the totally-enclosed insulating basin body 1 of insulating materials
Along wall outer surface, be provided with plug hole 5 on metal screen layer 4, plug hole 5 extends radially through metal screen layer 4.Metal screen layer
4 inwalls correspond to the position of plug hole 5 and are provided with antenna slot, plug hole 5 it is inwardly open in the range of antenna slot bottom land.With antenna slot groove
Bottom Shape matching cambered surface plate aerial 2 and the flush antenna groove of cambered surface insulating trip 3 in, wherein cambered surface plate aerial 2 with insulation basin
Sub- body 1 is affixed along wall, and cambered surface insulating trip 3 is bonded with the cambered surface of cambered surface plate aerial 2, cambered surface plate aerial 2 and metal screen
Cover and insulated by cambered surface insulating trip 3 between layer 4.Cambered surface plate aerial 2 is extra-high video sensor.
The side wall of plug hole 5 is step-like, and the top of plug hole 5 is provided with metal cover board 6, and metal cover board 6 is arranged on platform
On rank 5-1, it is fixedly connected by screw with metal screen layer 4.The side wall of plug hole 5 is metal screen layer 4, bottom is that cambered surface is exhausted
Embolium 3, top are metal cover board 6, enclose the installation cavity of closing, and signal conditioning circuit plate is arranged in the installation cavity body.
Signal output connector mounting hole 6-1 is provided with metal cover board 6.In work, signal output connector is consolidated through mounting hole
Surely it is arranged on metal cover board 6, signal output connector is connected by feeder line with cambered surface plate aerial 2, can be gathered inside GIS
Superfrequency Partial discharge signal, by external cable transmission to backstage superfrequency detecting instrument, analyze ultrahigh-frequency signal.
Claims (3)
1. a kind of superfrequency detection method for local discharge, it is characterised in that this method is that plate aerial is arranged in into Strip casting hole screen
Between the insulator body and the screen layer that cover the disc insulator of layer, plate aerial is insulated with screen layer by insulating barrier, flat board
Antenna is extra-high video sensor；The orthographic projection of the plug hole of screen layer is located in the range of plate aerial；The side wall of plug hole is
Metal screen layer, bottom are insulating barrier, and top surface is closed by metal cover board；
Signal output connector is arranged on metal cover board, the output end of signal output connector and signal conditioning circuit passes through radio frequency
Cable is connected, and the input of signal conditioning circuit is connected with plate aerial by feeder line；
The ground protection lid rotation of signal output connector is back-outed, accesses external interface, it is special to backstage by external cable transmission
High-frequency detection instrument, you can collection analysis ultrahigh-frequency signal.
A kind of 2. superfrequency detection method for local discharge as claimed in claim 1, it is characterised in that：Described plate aerial and
Screen layer is cylindrical shape, is coated on the edge circumference of disc insulator.
A kind of 3. superfrequency detection method for local discharge as claimed in claim 1, it is characterised in that：Described plate aerial is
Cambered surface plate aerial, screen layer are cambered surface insulation board, and cambered surface plate aerial fits with screen layer for the cambered surface of cambered surface insulation board,
Its projected area is more than the projected area of plug hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710884105.1A CN107807312B (en) | 2017-09-26 | 2017-09-26 | Ultrahigh frequency partial discharge detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710884105.1A CN107807312B (en) | 2017-09-26 | 2017-09-26 | Ultrahigh frequency partial discharge detection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107807312A true CN107807312A (en) | 2018-03-16 |
| CN107807312B CN107807312B (en) | 2020-01-14 |
Family
ID=61592483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710884105.1A Active CN107807312B (en) | 2017-09-26 | 2017-09-26 | Ultrahigh frequency partial discharge detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107807312B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109358273A (en) * | 2018-11-16 | 2019-02-19 | 国网宁夏电力有限公司电力科学研究院 | Superfrequency detection system based on crusing robot |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04320977A (en) * | 1991-03-31 | 1992-11-11 | Fujikura Ltd | Partial discharge position orientation method |
| US5557195A (en) * | 1992-11-03 | 1996-09-17 | Qrp, Inc. | Method and apparatus for evaluating electrostatic discharge conditions |
| CN1673762A (en) * | 2005-04-26 | 2005-09-28 | 重庆大学 | Gasinsulation combined electric device local discharge analog experimental apparatus and experimental method |
| CN102096027A (en) * | 2010-11-15 | 2011-06-15 | 华北电力大学 | Pre-embedded sensor for local discharge detection of power cable accessory |
| CN202994964U (en) * | 2012-12-29 | 2013-06-12 | 内蒙古自治区电力科学研究院 | UHF partial discharge sensor capable of closely cooperating with GIS basin-type insulator |
| CN203825148U (en) * | 2014-04-24 | 2014-09-10 | 上海思源高压开关有限公司 | Grading ring partial discharge sensor of disc-type insulator |
| CN205404742U (en) * | 2016-03-09 | 2016-07-27 | 国家电网公司 | A simple and easy anti jamming unit for GIS partial discharge superfrequency is electrified to be detected |
| CN205427126U (en) * | 2016-04-05 | 2016-08-03 | 成都恒锐智科数字技术有限公司 | GIS partial discharge high altitude sampling device |
-
2017
- 2017-09-26 CN CN201710884105.1A patent/CN107807312B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04320977A (en) * | 1991-03-31 | 1992-11-11 | Fujikura Ltd | Partial discharge position orientation method |
| US5557195A (en) * | 1992-11-03 | 1996-09-17 | Qrp, Inc. | Method and apparatus for evaluating electrostatic discharge conditions |
| CN1673762A (en) * | 2005-04-26 | 2005-09-28 | 重庆大学 | Gasinsulation combined electric device local discharge analog experimental apparatus and experimental method |
| CN102096027A (en) * | 2010-11-15 | 2011-06-15 | 华北电力大学 | Pre-embedded sensor for local discharge detection of power cable accessory |
| CN202994964U (en) * | 2012-12-29 | 2013-06-12 | 内蒙古自治区电力科学研究院 | UHF partial discharge sensor capable of closely cooperating with GIS basin-type insulator |
| CN203825148U (en) * | 2014-04-24 | 2014-09-10 | 上海思源高压开关有限公司 | Grading ring partial discharge sensor of disc-type insulator |
| CN205404742U (en) * | 2016-03-09 | 2016-07-27 | 国家电网公司 | A simple and easy anti jamming unit for GIS partial discharge superfrequency is electrified to be detected |
| CN205427126U (en) * | 2016-04-05 | 2016-08-03 | 成都恒锐智科数字技术有限公司 | GIS partial discharge high altitude sampling device |
Non-Patent Citations (2)
| Title |
|---|
| T.HOSHINO等: ""Development of a loop-type partial discharge sensor embedded in insulation material of a 245 kV-class GIS"", 《2012IEEE》 * |
| XIZI ZHANG 等: ""Research of a loop-type sensor embedded in an insulator in 252kV GIS for partial discharge measurement"", 《2017 8TH INTERNATIONAL CONFERENCE ON MECHANICAL AND INTELLIGENT MANUFACTURING TECHNOLOGIES (LCMIMT)》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109358273A (en) * | 2018-11-16 | 2019-02-19 | 国网宁夏电力有限公司电力科学研究院 | Superfrequency detection system based on crusing robot |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107807312B (en) | 2020-01-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203164364U (en) | GIS partial discharge monitoring device with built-in ultrahigh frequency sensor | |
| CN103149507A (en) | Externally arranged ultrahigh frequency partial discharge detection sensor | |
| CN203825148U (en) | Grading ring partial discharge sensor of disc-type insulator | |
| CN103487728B (en) | Measure narrow-band electromagnetic wave signal coupling process and the detection system of GIS partial discharge | |
| KR20100090012A (en) | Partial discharge detection sensor and partial discharge detection device using the same | |
| CN206804797U (en) | The extra-high video sensor of external intelligence for GIS partial discharge detection | |
| CN104459491A (en) | Arc sensor for partial discharge detection of high-voltage conductors in GIS | |
| CN106483436A (en) | The external extra-high video sensor of multipurpose for power equipment Partial Discharge Detection | |
| CN207367691U (en) | The new totally-enclosed disc insulators of GIS | |
| CN104391226A (en) | Distribution line online monitoring collection terminal and collection method supporting three-phase synchronous collection | |
| CN206696387U (en) | External extra-high video sensor for GIS partial discharge detection | |
| CN107807312A (en) | A kind of superfrequency detection method for local discharge | |
| CN205333783U (en) | Partial discharge detection device | |
| CN207367689U (en) | The totally-enclosed disc insulators of GIS of built-in extra-high video sensor | |
| CN204044197U (en) | A kind of GIS external sensor | |
| CN204649905U (en) | Based on the superfrequency sensor of metal disc insulator perforate | |
| CN204359899U (en) | GIS internal high voltage conductor Partial Discharge Detection arc sensor | |
| CN206248774U (en) | For the external extra-high video sensor of multipurpose of power equipment Partial Discharge Detection | |
| CN207367690U (en) | A kind of totally-enclosed disc insulators of GIS | |
| CN104898030A (en) | Extra-high voltage transformer station ultrahigh frequency partial discharge anti-electromagnetic interference testing method and mobile platform | |
| CN107833705A (en) | A kind of totally-enclosed disc insulators of GIS of built-in extra-high video sensor | |
| CN212646906U (en) | Ultrahigh frequency partial discharge sensor with dual-port signal output | |
| CN207352041U (en) | A kind of connector of GIS shading rings extraction-type sensor | |
| CN210015187U (en) | Capacitive TEV sensor applied to GIS partial discharge detection | |
| CN114019333A (en) | Composite sensor for detecting partial discharge ultrahigh frequency electromagnetic signal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |