CN206583944U - Partial discharge system electromagnetic screen - Google Patents
Partial discharge system electromagnetic screen Download PDFInfo
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- CN206583944U CN206583944U CN201720238467.9U CN201720238467U CN206583944U CN 206583944 U CN206583944 U CN 206583944U CN 201720238467 U CN201720238467 U CN 201720238467U CN 206583944 U CN206583944 U CN 206583944U
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- partial discharge
- discharge system
- shielding box
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Abstract
The utility model discloses a kind of partial discharge system electromagnetic screen, including shielding box, the shielding box includes the box body and cover plate of upper end open, the cover plate coordinates with the upper end open and makes to be provided with fixed mechanism on the closed installation chamber that is internally formed of the box body, the inwall of the installation chamber；Partial discharge system light current component, the partial discharge system light current component is installed in the installation cavity room by the fixed mechanism；And communication part, the communication part be arranged on the shielding box and with the partial discharge system light current component be electrically connected with.On the premise of so ensureing the reliable test performance of partial discharge system; good protective effect can be formed to light current component by the shielding action of shielding box; electromagnetic wave in electromagnetic interference source (strong power part) and test environment in partial discharge system is reduced to play a game the electromagnetic interference strength of place system light current component; so as to lift the interference free performance and test performance of partial discharge system, the accuracy and reliability of testing result are improved.
Description
Technical field
The utility model is related to partial discharge technical field of measurement and test, more particularly to a kind of partial discharge system electromagnetic screen.
Background technology
Cable oscillatory wave partial discharge detection system is that recent domestic studies more one kind for crosslinked polyethylene
The electrical equipment of power cable Partial Discharge Testing on Site.In cable oscillatory wave partial discharge detection system, by HVDC
The strong power part of the compositions such as source, solid switch and inductance is the electromagnetic interference source of internal system, and acquisition control unit etc. is weak
Electric part is then for easily by the sensitive equipment of electromagnetic interference.In order to ensure the functional reliability of detecting system, prior art side
Case is typically physically separated strong power part with weak current part, to reduce electromagnetism of the strong power part to low-pressure section
Interference.The program is only capable of reducing strong power part to a certain extent and the interference of weak current part is failed all to shield electromagnetism,
The electromagnetic wave of other electronic equipments in the on-site actual situations and test environment of cable wave of oscillation test system is also have ignored simultaneously
Interference, leads to not the effective detection for realizing cable local discharge, the test performance of influence detecting system, and testing result
Accuracy and reliability.
Utility model content
Based on this, the utility model is the defect for overcoming prior art there is provided a kind of partial discharge system electromagnetic screen,
The electromagnetic interference of electromagnetic wave in the electromagnetic interference source and test environment in partial discharge system to light current sensitive equipment can be effectively reduced,
The interference free performance and test performance of partial discharge system are lifted, the effective detection to cable local discharge is realized, testing result is improved
Accuracy and reliability.
Its technical scheme is as follows：
A kind of partial discharge system electromagnetic screen, including：
Shielding box, the shielding box includes the box body and cover plate of upper end open, and the cover plate coordinates with the upper end open
Make to be provided with fixed mechanism on the closed installation chamber that is internally formed of the box body, the inwall of the installation chamber；
Partial discharge system light current component, the partial discharge system light current component is installed in the installation cavity by the fixed mechanism
It is indoor；And
Communication part, the communication part is arranged on the shielding box and electrically connected with the partial discharge system light current component
Connect.
Above-mentioned partial discharge system electromagnetic screen is electrically connected with by being installed on shielding box with partial discharge system light current component
Communication part, and partial discharge system light current component is installed on by fixed mechanism in closed installation cavity room, is ensureing partial discharge
On the premise of system has reliable test job performance, it can form good to light current component by the shielding action of shielding box
Protective effect, reduces electromagnetic wave place system of playing a game in the electromagnetic interference source (strong power part) and test environment in partial discharge system weak
The electromagnetic interference strength of electrical component, so as to lift the interference free performance and test performance of partial discharge system, it is ensured that locally put to cable
The effective detection of electricity, improves the accuracy and reliability of testing result.
Technical scheme is further described below：
In one of the embodiments, the shielding that the outside wall surface of the shielding box is coated with for reducing electromagnetic interference is applied
Layer.Curtain coating is thus coated by the outside wall surface in shielding box, the anti-electromagnetic interference capability of shielding box can be further improved,
Further reduce the adverse effect for place system light current component of playing a game.
In one of the embodiments, the shielding box includes front panel, and the communication part includes installing respectively in institute
Signal control line interface, emergency stop switch interface and the communication interface on front panel are stated, the partial discharge system light current component includes phase
Switch driving circuit, acquisition control unit and the power supply being mutually electrically connected with, the acquisition control unit and the signal control line
Interface, the emergency stop switch interface and the communication interface are communicated to connect.So it may insure that partial discharge system light current component is kept away
While from outside electromagnetic interference, additionally it is possible to be smoothly normally connected with other electronic units in system, it is ensured that system makes
Use performance.
In one of the embodiments, the communication part also include installing in the power supply indicator on the front panel and
Pressurizeed indicator lamp, and the power supply indicator and the pressurization indicator lamp are electrically connected with the acquisition control unit.It is thus logical
The instantaneous operating conditions of partial discharge system light current component can be reflected by crossing power supply indicator etc. and pressurization indicator lamp, to there is exception
Staff takes measures during work, is eliminated safe hidden trouble while ensuring that partial discharge test is accurate and reliable.
In one of the embodiments, the communication part also includes switching drive signal joint, and the partial discharge system is weak
Electrical component also includes the signal processing unit being electrically connected with the power supply and the acquisition control unit, the signal transacting
Unit is electrically connected with the switching drive signal joint.It can thus be matched by switching drive signal joint with solid switch
Connection, can improve partial discharge system to cable by signal processing unit and acquisition control unit to drive signal processing afterwards
Effective accurate processing of partial discharge point test data, is conducive to improving the accuracy and reliability of testing result.
In one of the embodiments, the shielding box also includes side panel, and the communication part also includes being arranged at institute
State being used on side panel and reduce at least one aviation plug of external cable electromagnetic interference, the aviation plug with it is described
Acquisition control unit is electrically connected with.Thus by installing the cable butting of aviation plug and external equipment on the side panels, not only
Quick connection can be realized, installation effectiveness is improved, while conductor and conductor can also be eliminated through the slit of shielding box formation
Electromagnetic effect, so as to reduce electromagnetic interference to greatest extent.
In one of the embodiments, the communication part is also external for reducing on the side panel including being arranged at
At least one sub-miniature A connector of signal wire, the sub-miniature A connector is electrically connected with the acquisition control unit.Thus by side
Sub-miniature A connector is installed on plate, the joint efficiency of screening arrangement and external equipment can be not only improved, while external letter can also be reduced
The electromagnetic interference during access of number line.
In one of the embodiments, the shielding box also includes rear board, and the rear board, which is provided with, to be used to shield
Induced-current on box is directed to the ground terminal on ground.Thus by ground terminal can by the induced-current on shielding box and
When be guided into ground, from ensure screening arrangement in itself and testing crew safety.
In one of the embodiments, the shielding box is additionally provided with dividing plate, the inwall of the dividing plate and the installation chamber
Connection forms shielding chamber, and the power supply or the switch driving circuit or the acquisition control unit are located at the shielding chamber
It is interior.Thus it is arranged at by power supply, switch driving circuit or acquisition control unit in shielding cavity room, can further reduces each portion
Electromagnetic interference between part.
In one of the embodiments, the dividing plate is provided with multiple cable-through holes.Thus by opening up line on dividing plate
Hole, power supply is also convenient for while shield effectiveness is ensured and is connected with switch driving circuit, acquisition control unit progress cable.
Brief description of the drawings
Fig. 1 is the structural representation of the partial discharge system electromagnetic screen described in the utility model embodiment；
Fig. 2 is the internal structure schematic diagram of the partial discharge system electromagnetic screen described in the utility model embodiment；
Fig. 3 is the side view structure at the front panel visual angle of the partial discharge system electromagnetic screen described in the utility model embodiment
Schematic diagram.
Description of reference numerals：
100th, shielding box, 110, chamber is installed, 120, front panel, 130, cover plate, 140, side panel, 150, dividing plate, 160,
Shield chamber, 170, rear board, 200, partial discharge system light current component, 210, switch driving circuit, 220, acquisition control unit,
230th, power supply, 240, signal processing unit, 300, communication part, 310, signal control line interface, 320, emergency stop switch interface,
330th, communication interface, 340, power supply indicator, 350, pressurization indicator lamp, 360, switching drive signal joint, 370, aviation plug,
380th, sub-miniature A connector, 400, curtain coating, 500, ground terminal.
Embodiment
It is below in conjunction with accompanying drawing and specifically real for the purpose of this utility model, technical scheme and advantage is more clearly understood
Mode is applied, the utility model is described in further detail.It should be appreciated that embodiment described herein
Only to explain the utility model, protection domain of the present utility model is not limited.
It should be noted that when element is referred to as " being fixedly arranged on ", " being arranged at " or " install in " another element, it can be with
Directly on another element or there can also be an element placed in the middle.When an element is considered as " connection " another yuan
Part, it can be directly to another element or may be simultaneously present centering elements；One element and another element
The concrete mode being fixedly connected can be achieved by the prior art, and will not be repeated here, it is preferred to use the fixation side of threaded connection
Formula.
Unless otherwise defined, all of technologies and scientific terms used here by the article is led with belonging to technology of the present utility model
The implication that the technical staff in domain is generally understood that is identical.It is herein to be in term used in the description of the present utility model
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term as used herein " and/or " bag
Include the arbitrary and all combination of one or more related Listed Items.
" first " described in the utility model, " second " do not represent specific quantity and order, are only used for title
Distinguish.
As depicted in figs. 1 and 2, it is a kind of partial discharge system electromagnetic screen of the utility model displaying, including：Shielding box
100, the shielding box includes the box body and cover plate 130 of upper end open, and the cover plate 130 makes described with upper end open cooperation
Being internally formed on closed installation chamber 110, the inwall for installing chamber 110 for box body is provided with fixed mechanism；Partial discharge system
System light current component 200, the partial discharge system light current component 200 is installed in the installation chamber 110 by the fixed mechanism；
And communication part 300, the communication part 300 be arranged on the shielding box 100 and with the partial discharge system light current component 200
It is electrically connected with.
Above-mentioned partial discharge system electromagnetic screen on shielding box 100 by installing and the electricity of partial discharge system light current component 200
Property connection communication part 300, and partial discharge system light current component 200 is installed on closed installation chamber by fixed mechanism
, can be with by the shielding action of shielding box 100 on the premise of ensureing that partial discharge system has reliable test job performance in 110
Good protective effect is formed to light current component, electromagnetic interference source (strong power part) and test environment in partial discharge system is reduced
Middle electromagnetic wave is played a game the electromagnetic interference strength of place system light current component 200, so as to lift interference free performance and the survey of partial discharge system
Try performance, it is ensured that to the effective detection of cable local discharge, improve the accuracy and reliability of testing result.
In the above-described embodiments, in order to improve the assembly and disassembly convenience of electromagnetic screen, shielding box 100 preferably by box body and
Cover plate 130 is combined, and cover plate 130 is adapted to the upper end open shape and size of box body, and box body is located at the end of upper end open
Face circumferentially offers multiple screwed holes, and cover plate 130 offers multiple through holes along the circumference correspondence close to edge, passes through screw etc.
Locking member connects one to one with through hole and screwed hole realizes that the installation of box body and cover plate 130 is fixed.It should be noted that in order to
Ensure conductive continuity, to reduce bond impedance, the contact surface of box body and cover plate 130 is because as smooth as possible, it is ensured that product tool
There is higher surface smoothness.In addition, in order to further be convenient to mount and dismount cover plate 130 and box body, box body is located at upper end open
Multiple button bits are arranged at intervals with periphery wall, correspondingly the edge of cover plate 130 is circumferentially arranged multiple grabs, by grab with
Being clasped for button bit realizes that the installation of cover plate 130 and box body is fixed.
Further, the outside wall surface of the shielding box 100 is coated with for reducing the curtain coating 400 of electromagnetic interference.Cause
And by coating curtain coating 400 in the outside wall surface of shielding box 100, can further improve the electromagnetism interference of shielding box 100
Ability, further reduces the adverse effect for place system light current component 200 of playing a game.Specifically, when the wall thickness of shielding box 100 is smaller
When, the mode of aluminium vacuum coating can be used to plate certain thickness coating in the outside wall surface of shielding box 100 to realize shielding
Effect；Or, use the mode of (cathode) sputtering to be shielded in outside wall surface three layers of sputtered layer of formation of shielding box 100 with further improve
Effect；Or spraying process can be used, and the resin-based coating containing electrically conductive particles is sprayed in the outside wall surface of shielding box 100, should
Figure layer can stop the Electromagnetic Interference in the range of certain frequency, and performance is good.
Fig. 1 and Fig. 3 are refer to, in one embodiment, the shielding box 100 includes front panel 120, the communication part
300 include installing respectively in the signal control line interface 310 on the front panel 120, emergency stop switch interface 320 and communication interface
330, the partial discharge system light current component 200 includes switch driving circuit 210, the acquisition control unit 220 being electrically connected with each other
With power supply 230, the acquisition control unit 220 and the signal control line interface 310, the emergency stop switch interface 320 and institute
Communication interface 330 is stated to communicate to connect.So it may insure that partial discharge system light current component 200 is avoided by the same of outside electromagnetic interference
When, additionally it is possible to smoothly normally it is connected with other electronic units in system, it is ensured that the performance of system.
In addition, the communication part 300 also includes installing in the power supply indicator 340 on the front panel 120 and pressurization
Indicator lamp 350, the power supply indicator 340 and the pressurization indicator lamp 350 electrically connect with the acquisition control unit 220
Connect.The real-time work of partial discharge system light current component 200 thus can be reflected by the grade of power supply indicator 340 and pressurization indicator lamp 350
Make state, to occur reminding staff to take measures during abnormal work situation, ensuring that partial discharge test is accurate and reliable
Eliminate safe hidden trouble simultaneously.
As shown in figure 1, further, the shielding box 100 also includes cover plate 130, and the communication part 300 also includes peace
Switching drive signal joint 360 on the cover plate 130, the partial discharge system light current component 200 also includes and the electricity
The signal processing unit 240 that source 230 and the acquisition control unit 220 are electrically connected with, the signal processing unit 240 and institute
Switching drive signal joint 360 is stated to be electrically connected with.It can thus be matched and connected with solid switch by switching drive signal joint 360
Connect, partial discharge system pair can be improved to drive signal processing by signal processing unit 240 and acquisition control unit 220 afterwards
Effective accurate processing of cable partial discharge point test data, is conducive to improving the accuracy and reliability of testing result.
Specifically, above-mentioned fixed mechanism can be on the shell of signal processing unit 240, acquisition control unit 220 etc.
The stud of setting, opens up screw on the inwall for installing chamber 110, wears screw by screw afterwards and stud is locked；
Locating dowel either is set on the inwall for installing chamber 110, in the outer of signal processing unit 240, acquisition control unit 220 etc.
Locating ring on shell, is coordinated by the interference socket of locating ring and locating dowel and realizes that installation is fixed.
The shielding box 100 also includes side panel 140, and the communication part 300 also includes being arranged at the side panel 140
On be used for reduce at least one aviation plug 370 of external cable electromagnetic interference, the aviation plug 370 is adopted with described
Collection control unit 220 is electrically connected with.Thus by installing the cable pair of aviation plug 370 and external equipment on side panel 140
Connect, can not only realize the quick connection of electromagnetic screen and external equipment, improve installation effectiveness, led while can also eliminate
The electromagnetic effect for the slit that body and conductor are formed through shielding box 100, so as to reduce electromagnetic interference to greatest extent.
The communication part 300 also reduces outer signal line at least including being arranged at being used on the side panel 140
One sub-miniature A connector 380, the sub-miniature A connector 380 is electrically connected with the acquisition control unit 220.Thus by side panel
Sub-miniature A connector 380 is installed on 140, the joint efficiency of screening arrangement and external equipment can be not only improved, while can also reduce outer
Connect electromagnetic interference during signal wire access.Wherein, SMA is Sub-Miniature-A abbreviation, i.e., a kind of micro connector.
It should be noted that being offered on above-mentioned front panel 120, rear board 170, cover plate 130 and side panel 140 pair
The mounting hole of signal control line interface 310, emergency stop switch interface 320, power supply indicator 340 etc., and preferably mounting hole should be installed
Be shaped as circle.Because in hole of the same area, the girth of circular port is minimum, when disturbing electromagnetic wave to reach panel, do
Disturb electric current can in the way of covering emitted energy, the girth of the size of this emittance generally with hole is proportional, that is, works as Kong Weiyuan
During shape, the interference effect of electromagnetic wave is minimum.
On the basis of above-described embodiment, the shielding box 100 also includes rear board 170, and the rear board 170 is provided with
Ground terminal 500 for the induced-current on shielding box 100 to be directed to ground.Thus can be by by ground terminal 500
Induced-current on shielding box 100 is guided into ground in time, from ensure screening arrangement in itself and testing crew safety.
Fig. 2 is refer to, in addition, the shielding box 100 is additionally provided with dividing plate 150, the dividing plate 150 and the installation chamber
110 inwall connects to form shielding chamber 160, the power supply 230 or the switch driving circuit 210 or the acquisition control list
Member 220 is located in the shielding chamber 160.Thus set by power supply 230, switch driving circuit 210 or acquisition control unit 220
It is placed in shielding chamber 160, can further reduces the electromagnetic interference between each part.Specifically, the quantity of dividing plate 150 can be with
It is one, preferably is arranged in shielding chamber 160 to reduce the electromagnetic interference of mains side by power supply 230；Further, dividing plate
150 quantity is four, and then is respectively cooperating with being formed four shielding chambers 160 with installing the inwall of chamber 110, make power supply 230,
Switch driving circuit 210, acquisition control unit 220 and signal processing unit 240 are located in shielding chamber 160 correspondingly,
So as to further improve the mutual electromagnetic interference between each component in the inside of shielding box 100.
Further, the dividing plate 150 is provided with multiple cable-through hole (not shown)s.Thus by dividing plate 150
Cable-through hole is opened up, power supply 230 and switch driving circuit 210, acquisition control unit 220 are also convenient for while shield effectiveness is ensured
Carry out cable connection.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses several embodiments of the present utility model, and it describes more specific and detailed,
But therefore it can not be interpreted as the limitation to utility model patent scope.It should be pointed out that for the common skill of this area
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
Protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (10)
1. a kind of partial discharge system electromagnetic screen, it is characterised in that including：
Shielding box, the shielding box includes the box body and cover plate of upper end open, and the cover plate coordinates with the upper end open makes institute
State and be provided with fixed mechanism on the closed installation chamber that is internally formed of box body, the inwall of the installation chamber；
Partial discharge system light current component, the partial discharge system light current component is installed in the installation chamber by the fixed mechanism
It is interior；And
Communication part, the communication part is arranged on the shielding box and is electrically connected with the partial discharge system light current component.
2. partial discharge system electromagnetic screen according to claim 1, it is characterised in that the outside wall surface of the shielding box is applied
It is covered with for reducing the curtain coating of electromagnetic interference.
3. partial discharge system electromagnetic screen according to claim 1, it is characterised in that the shielding box is included above
Plate, the communication part includes installing respectively in the signal control line interface on the front panel, emergency stop switch interface and communication
Interface, the partial discharge system light current component includes switch driving circuit, acquisition control unit and the power supply being electrically connected with each other, institute
Acquisition control unit is stated to communicate to connect with the signal control line interface, the emergency stop switch interface and the communication interface.
4. partial discharge system electromagnetic screen according to claim 3, it is characterised in that the communication part also includes peace
Power supply indicator on the front panel and pressurization indicator lamp, the power supply indicator and the pressurization indicator lamp are and institute
State acquisition control unit electric connection.
5. partial discharge system electromagnetic screen according to claim 3, it is characterised in that the communication part also includes opening
Drive signal joint is closed, the partial discharge system light current component also includes electrically connecting with the power supply and the acquisition control unit
The signal processing unit connect, the signal processing unit is electrically connected with the switching drive signal joint.
6. partial discharge system electromagnetic screen according to claim 3, it is characterised in that the shielding box also includes side
Plate, the communication part also includes being arranged at least one boat for reducing external cable electromagnetic interference on the side panel
Blind plug, the aviation plug is electrically connected with the acquisition control unit.
7. partial discharge system electromagnetic screen according to claim 6, it is characterised in that the communication part also includes setting
At least one sub-miniature A connector for reducing outer signal line being placed on the side panel, the sub-miniature A connector is controlled with the collection
Unit processed is electrically connected with.
8. partial discharge system electromagnetic screen according to claim 1, it is characterised in that the shielding box is also included below
Plate, the rear board is provided with the ground terminal for being used for that the induced-current on shielding box to be directed to ground.
9. partial discharge system electromagnetic screen according to claim 3, it is characterised in that the shielding box be additionally provided with every
Plate, the dividing plate is connected to form shielding chamber with the inwall of the installation chamber, the power supply or the switch driving circuit or
The acquisition control unit is located in the shielding cavity room.
10. partial discharge system electromagnetic screen according to claim 9, it is characterised in that the dividing plate is provided with multiple
Cable-through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720238467.9U CN206583944U (en) | 2017-03-10 | 2017-03-10 | Partial discharge system electromagnetic screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720238467.9U CN206583944U (en) | 2017-03-10 | 2017-03-10 | Partial discharge system electromagnetic screen |
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| Publication Number | Publication Date |
|---|---|
| CN206583944U true CN206583944U (en) | 2017-10-24 |
Family
ID=60111880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720238467.9U Active CN206583944U (en) | 2017-03-10 | 2017-03-10 | Partial discharge system electromagnetic screen |
Country Status (1)
| Country | Link |
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| CN (1) | CN206583944U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106872735A (en) * | 2017-03-10 | 2017-06-20 | 广州供电局有限公司 | Partial discharge system electromagnetic screen |
| CN112034223A (en) * | 2020-08-25 | 2020-12-04 | 杭州巨骐信息科技股份有限公司 | Isolation system between high-voltage circuit and data acquisition monitoring circuit |
-
2017
- 2017-03-10 CN CN201720238467.9U patent/CN206583944U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106872735A (en) * | 2017-03-10 | 2017-06-20 | 广州供电局有限公司 | Partial discharge system electromagnetic screen |
| CN112034223A (en) * | 2020-08-25 | 2020-12-04 | 杭州巨骐信息科技股份有限公司 | Isolation system between high-voltage circuit and data acquisition monitoring circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200922 Address after: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Patentee after: Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd. Address before: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Patentee before: GUANGZHOU POWER SUPPLY Co.,Ltd. |
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| TR01 | Transfer of patent right |